/* ==========================================================================
   B.Tech.(CSE)-AIR 2024 · Sem 5 / AIR 5A — CYBER EVENT DESIGN SYSTEM
   Theme inspired by Hack2Skill Snowflake CoCo CLI Hackathon GCC Edition
   Palette: Pitch Obsidian Black (#000000), Snowflake Cyan (#42c3fe), Cobalt (#086bcc)
   Typography: Orbitron (Display / Headings) & Montserrat (Body / UI)
   ========================================================================== */

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root, [data-theme="dark"] {
  /* Core Hackathon Dark Palette */
  --bg:            #000000;
  --bg2:           #040711;
  --bg3:           #070d1e;
  --surface:       rgba(8, 14, 28, 0.85);
  --surface2:      rgba(12, 22, 42, 0.75);
  --surface-solid: #060b18;

  --card-bg:       linear-gradient(180deg, rgba(8, 16, 32, 0.9) 0%, rgba(3, 7, 18, 0.96) 100%);
  --card-border:   rgba(66, 195, 254, 0.2);
  --card-hover-border: rgba(66, 195, 254, 0.65);
  --card-shadow:   0 16px 40px rgba(0, 0, 0, 0.75), 0 0 24px rgba(66, 195, 254, 0.06);
  --card-hover-shadow: 0 24px 50px rgba(0, 0, 0, 0.88), 0 0 38px rgba(66, 195, 254, 0.25);

  /* Snowflake CoCo CLI Colors */
  --cyan:          #42c3fe;
  --cyan-glow:     rgba(66, 195, 254, 0.4);
  --cyan-subtle:   rgba(66, 195, 254, 0.1);
  --blue:          #086bcc;
  --blue-glow:     rgba(8, 107, 204, 0.35);
  --violet:        #086bcc;
  --violet-glow:   rgba(8, 107, 204, 0.3);
  --amber:         #38bdf8;
  --amber-glow:    rgba(56, 189, 248, 0.25);
  --green:         #10b981;
  --green-glow:    rgba(16, 185, 129, 0.25);
  --rose:          #f43f5e;

  --txt:           #ffffff;
  --txt2:          #94a3b8;
  --txt3:          #64748b;
  --txt-heading:   #ffffff;

  --border:        rgba(66, 195, 254, 0.2);
  --border2:       rgba(8, 107, 204, 0.25);
  --nav-bg:        rgba(4, 7, 17, 0.82);
  --nav-border:    rgba(66, 195, 254, 0.26);
  --nav-shadow:    0 14px 40px rgba(0, 0, 0, 0.75), 0 0 25px rgba(66, 195, 254, 0.12);

  --table-head-bg: rgba(8, 16, 32, 0.96);
  --table-row-alt: rgba(10, 20, 40, 0.4);
  --table-row-hover: rgba(66, 195, 254, 0.08);
  --table-border:  rgba(66, 195, 254, 0.2);

  --input-bg:      rgba(6, 12, 26, 0.9);
  --modal-bg:      rgba(4, 8, 18, 0.97);
  --modal-border:  rgba(66, 195, 254, 0.3);
  --badge-bg:      rgba(66, 195, 254, 0.1);
  --notice-bg:     rgba(8, 16, 32, 0.9);
  --notice-border: rgba(66, 195, 254, 0.3);
  --notice-strong: #38bdf8;

  --hero-grad-start: #42c3fe;
  --hero-grad-mid:   #22d3ee;
  --hero-grad-end:   #086bcc;

  --mesh-bg:       radial-gradient(ellipse 80% 50% at 50% -5%, rgba(66, 195, 254, 0.24) 0%, transparent 65%),
                   radial-gradient(ellipse 60% 65% at 90% 80%, rgba(8, 107, 204, 0.22) 0%, transparent 65%),
                   radial-gradient(ellipse 55% 55% at 10% 65%, rgba(66, 195, 254, 0.14) 0%, transparent 65%),
                   #000000;
  --grid-color:    rgba(66, 195, 254, 0.045);
  --orb-1-bg:      radial-gradient(circle, rgba(66, 195, 254, 0.18) 0%, transparent 70%);
  --orb-2-bg:      radial-gradient(circle, rgba(8, 107, 204, 0.20) 0%, transparent 70%);
  --orb-3-bg:      radial-gradient(circle, rgba(34, 211, 238, 0.12) 0%, transparent 70%);
  --canvas-opacity: 0.42;

  --r:             16px;
  --r2:            10px;
  --pill:          9999px;

  --font-display:  'Orbitron', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-body:     'Montserrat', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono:     'Fira Code', 'Consolas', monospace;
}

[data-theme="light"] {
  /* Snowflake Glacier White Theme */
  --bg:            #f3f8fc;
  --bg2:           #e8f2fb;
  --bg3:           #dbeafe;
  --surface:       rgba(255, 255, 255, 0.94);
  --surface2:      rgba(243, 248, 253, 0.9);
  --surface-solid: #ffffff;

  --card-bg:       linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(240, 246, 253, 0.94));
  --card-border:   rgba(8, 107, 204, 0.2);
  --card-hover-border: rgba(8, 107, 204, 0.65);
  --card-shadow:   0 10px 30px -4px rgba(8, 28, 64, 0.08), 0 4px 12px -2px rgba(8, 28, 64, 0.04);
  --card-hover-shadow: 0 20px 40px -6px rgba(8, 28, 64, 0.16), 0 8px 24px rgba(66, 195, 254, 0.25);

  --cyan:          #086bcc;
  --cyan-glow:     rgba(8, 107, 204, 0.28);
  --cyan-subtle:   rgba(8, 107, 204, 0.08);
  --blue:          #0284c7;
  --blue-glow:     rgba(2, 132, 199, 0.25);
  --violet:        #0284c7;
  --violet-glow:   rgba(2, 132, 199, 0.22);
  --amber:         #0284c7;
  --amber-glow:    rgba(2, 132, 199, 0.2);
  --green:         #059669;
  --green-glow:    rgba(5, 150, 105, 0.2);
  --rose:          #e11d48;

  --txt:           #0b1526;
  --txt2:          #475569;
  --txt3:          #64748b;
  --txt-heading:   #040a16;

  --border:        rgba(8, 107, 204, 0.2);
  --border2:       rgba(66, 195, 254, 0.3);
  --nav-bg:        rgba(255, 255, 255, 0.92);
  --nav-border:    rgba(8, 107, 204, 0.25);
  --nav-shadow:    0 12px 32px -4px rgba(8, 28, 64, 0.12), 0 2px 8px rgba(8, 28, 64, 0.04);

  --table-head-bg: rgba(235, 243, 252, 0.98);
  --table-row-alt: rgba(245, 249, 254, 0.85);
  --table-row-hover: rgba(8, 107, 204, 0.08);
  --table-border:  rgba(8, 107, 204, 0.18);

  --input-bg:      #ffffff;
  --modal-bg:      rgba(255, 255, 255, 0.98);
  --modal-border:  rgba(8, 107, 204, 0.25);
  --badge-bg:      rgba(8, 107, 204, 0.08);
  --notice-bg:     rgba(255, 255, 255, 0.96);
  --notice-border: rgba(8, 107, 204, 0.3);
  --notice-strong: #086bcc;

  --hero-grad-start: #086bcc;
  --hero-grad-mid:   #0284c7;
  --hero-grad-end:   #0369a1;

  --mesh-bg:       radial-gradient(ellipse 80% 50% at 50% -5%, rgba(66, 195, 254, 0.18) 0%, transparent 65%),
                   radial-gradient(ellipse 60% 65% at 90% 80%, rgba(8, 107, 204, 0.14) 0%, transparent 65%),
                   #f3f8fc;
  --grid-color:    rgba(8, 107, 204, 0.04);
  --orb-1-bg:      radial-gradient(circle, rgba(66, 195, 254, 0.12) 0%, transparent 70%);
  --orb-2-bg:      radial-gradient(circle, rgba(8, 107, 204, 0.10) 0%, transparent 70%);
  --orb-3-bg:      radial-gradient(circle, rgba(66, 195, 254, 0.08) 0%, transparent 70%);
  --canvas-opacity: 0.45;
}

html { 
  scroll-behavior: smooth; 
  -webkit-text-size-adjust: 100%; 
  overflow-x: hidden;
  width: 100%;
}

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--txt);
  min-height: 100dvh;
  width: 100%;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  transition: background-color 0.3s ease, color 0.3s ease;
  padding-left: env(safe-area-inset-left, 0px);
  padding-right: env(safe-area-inset-right, 0px);
  display: flex;
  flex-direction: column;
}

/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   BACKGROUND SYSTEM
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
.bg-layer {
  position: fixed; inset: 0; pointer-events: none;
}

/* Gradient mesh */
.bg-mesh {
  z-index: 0;
  background: var(--mesh-bg);
  transition: background 0.3s ease;
}

/* Fine grid */
.bg-grid {
  z-index: 1;
  background-image:
    linear-gradient(var(--grid-color) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-color) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 100% 100% at 50% 50%, black 30%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse 100% 100% at 50% 50%, black 30%, transparent 80%);
}

/* Noise texture */
.bg-noise {
  z-index: 2;
  opacity: 0.025;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size: 256px 256px;
}

/* Floating ambient orbs */
.orb {
  position: fixed; border-radius: 50%; pointer-events: none; filter: blur(75px); z-index: 1;
}
.orb-1 {
  width: 55vw; height: 40vw;
  background: var(--orb-1-bg); transition: background 0.3s ease;
  top: -15%; left: -10%;
  animation: orbDrift1 22s ease-in-out infinite alternate;
}
.orb-2 {
  width: 45vw; height: 50vw;
  background: var(--orb-2-bg); transition: background 0.3s ease;
  bottom: -15%; right: -10%;
  animation: orbDrift2 28s ease-in-out infinite alternate;
}
.orb-3 {
  width: 30vw; height: 30vw;
  background: var(--orb-3-bg); transition: background 0.3s ease;
  top: 40%; left: 40%;
  animation: orbDrift3 18s ease-in-out infinite alternate;
}
@keyframes orbDrift1 { 0%{transform:translate(0,0)} 100%{transform:translate(6vw,8vh)} }
@keyframes orbDrift2 { 0%{transform:translate(0,0)} 100%{transform:translate(-8vw,-6vh)} }
@keyframes orbDrift3 { 0%{transform:translate(0,0) scale(1)} 100%{transform:translate(-4vw,5vh) scale(1.2)} }

/* Canvas constellation */
#constellation {
  position: fixed; inset: 0; z-index: 2; pointer-events: none;
  opacity: var(--canvas-opacity);
  transition: opacity 0.3s ease;
}

/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   FLOATING TOP NAVIGATION BAR
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
.site-nav-wrap {
  position: fixed;
  top: 16px;
  left: 0; right: 0;
  display: flex;
  justify-content: center;
  z-index: 90;
  padding: 0 16px;
  pointer-events: none;
}
.site-nav {
  pointer-events: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: clamp(10px, 1.8vw, 24px);
  background: var(--nav-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--nav-border);
  border-radius: var(--pill);
  padding: 6px 10px 6px 18px;
  box-shadow: var(--nav-shadow);
  transition: background 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}
.nav-brand {
  order: 1;
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  user-select: none;
}
.nav-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: #42c3fe;
  box-shadow: 0 0 10px #42c3fe;
  animation: pulse 2s infinite ease-in-out;
}
.nav-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 0.95rem;
  color: var(--txt-heading);
  letter-spacing: 0.05em;
  white-space: nowrap;
}
.nav-sub {
  font-family: var(--font-mono);
  font-weight: 400;
  font-size: 0.78rem;
  color: var(--cyan);
  opacity: 0.9;
}
.nav-links {
  order: 2;
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-link {
  background: transparent;
  border: none;
  color: var(--txt2);
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: var(--pill);
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
}
.nav-link:hover {
  color: var(--txt);
  background: rgba(66, 195, 254, 0.08);
}
.nav-link.active {
  color: #000000;
  background: linear-gradient(90deg, #42c3fe 0%, #086bcc 100%);
  font-weight: 700;
  box-shadow: 0 0 16px rgba(66, 195, 254, 0.45);
}
[data-theme="light"] .nav-link.active {
  color: #ffffff;
}
.nav-btn-submit {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: linear-gradient(90deg, #42c3fe 0%, #086bcc 100%);
  border: none;
  color: #000000;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 0.82rem;
  padding: 7px 16px;
  border-radius: var(--pill);
  cursor: pointer;
  transition: all 0.22s ease;
  white-space: nowrap;
  box-shadow: 0 0 18px rgba(66, 195, 254, 0.35);
}
[data-theme="light"] .nav-btn-submit {
  color: #ffffff;
}
.nav-btn-submit:hover {
  box-shadow: 0 0 28px rgba(66, 195, 254, 0.65);
  transform: translateY(-1px) scale(1.02);
}
.btn-arrow {
  font-size: 0.9em;
  transition: transform 0.2s ease;
}
.nav-btn-submit:hover .btn-arrow {
  transform: translate(2px, -2px);
}

.nav-actions {
  order: 3;
  display: flex;
  align-items: center;
  gap: 8px;
}

/* Theme Toggle Button */
.theme-toggle-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(66, 195, 254, 0.08);
  border: 1px solid var(--border);
  color: var(--cyan);
  cursor: pointer;
  position: relative;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  overflow: hidden;
  padding: 0;
  flex-shrink: 0;
}
.theme-toggle-btn:hover {
  background: rgba(66, 195, 254, 0.16);
  border-color: var(--cyan);
  transform: scale(1.06);
  box-shadow: 0 0 14px var(--cyan-glow);
}
.theme-icon {
  width: 17px;
  height: 17px;
  position: absolute;
  transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.25s ease;
}
[data-theme="dark"] .icon-sun {
  opacity: 1;
  transform: rotate(0deg) scale(1);
}
[data-theme="dark"] .icon-moon {
  opacity: 0;
  transform: rotate(90deg) scale(0.5);
}
[data-theme="light"] .icon-sun {
  opacity: 0;
  transform: rotate(-90deg) scale(0.5);
}
[data-theme="light"] .icon-moon {
  opacity: 1;
  transform: rotate(0deg) scale(1);
}

/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   PAGE SYSTEM
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
.page {
  position: relative; z-index: 10;
  min-height: 100dvh;
  display: none; flex-direction: column;
  align-items: center; 
  justify-content: flex-start;
  padding: clamp(98px, 12vw, 130px) clamp(16px, 4vw, 48px) clamp(50px, 8vw, 90px);
  width: 100%;
  box-sizing: border-box;
}
.page.active { display: flex; flex: 1 0 auto; }

/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   HOME PAGE
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
#home { 
  gap: 0; 
  justify-content: flex-start;
  padding-top: clamp(104px, 13vw, 136px);
}

/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   ANIMATED HERO EMBLEM (BRAINWARE LOGO)
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
.nav-brand-logo {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  object-fit: cover;
  box-shadow: 0 0 8px rgba(66, 195, 254, 0.5);
  border: 1px solid rgba(66, 195, 254, 0.6);
  flex-shrink: 0;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.nav-brand:hover .nav-brand-logo {
  transform: rotate(15deg) scale(1.1);
  box-shadow: 0 0 16px rgba(66, 195, 254, 0.85);
}

.hero-logo-showcase {
  position: relative;
  width: clamp(124px, 16vw, 156px);
  height: clamp(124px, 16vw, 156px);
  margin: clamp(16px, 2.8vw, 26px) auto clamp(40px, 6vw, 56px);
  display: flex;
  align-items: center;
  justify-content: center;
  isolation: isolate;
  user-select: none;
  animation: heroLogoEntrance 1.1s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes heroLogoEntrance {
  0% {
    opacity: 0;
    transform: scale(0.55) translateY(-32px);
    filter: drop-shadow(0 0 0 transparent) blur(10px);
  }
  60% {
    opacity: 1;
    transform: scale(1.08) translateY(0);
    filter: drop-shadow(0 0 35px rgba(66, 195, 254, 0.95)) blur(0px);
  }
  100% {
    opacity: 1;
    transform: scale(1) translateY(0);
    filter: drop-shadow(0 0 22px rgba(66, 195, 254, 0.5)) blur(0px);
  }
}

/* Ambient Backlight Aura Pulse */
.logo-ambient-aura {
  position: absolute;
  inset: -32px;
  background: radial-gradient(circle, rgba(66, 195, 254, 0.4) 0%, rgba(8, 107, 204, 0.18) 50%, transparent 72%);
  border-radius: 50%;
  pointer-events: none;
  z-index: 1;
  filter: blur(16px);
  animation: auraBreathe 3.6s ease-in-out infinite alternate;
}

@keyframes auraBreathe {
  0% {
    opacity: 0.6;
    transform: scale(0.92);
  }
  100% {
    opacity: 1;
    transform: scale(1.15);
  }
}

/* Rotating Orbital Cyber Rings */
.logo-orbital-ring {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
  z-index: 2;
}

/* Outer Dashed Radar Ring */
.ring-outer {
  inset: -18px;
  border: 1.5px dashed rgba(66, 195, 254, 0.4);
  animation: spinClockwise 28s linear infinite;
  box-shadow: 0 0 15px rgba(66, 195, 254, 0.15);
}

/* Satellite Laser Dots along the Outer Ring */
.ring-outer .satellite-dot {
  position: absolute;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #42c3fe;
  box-shadow: 0 0 10px #42c3fe, 0 0 18px #42c3fe;
}
.sat-1 { top: -3px; left: 50%; transform: translateX(-50%); }
.sat-2 { bottom: -3px; left: 50%; transform: translateX(-50%); }
.sat-3 { left: -3px; top: 50%; transform: translateY(-50%); }
.sat-4 { right: -3px; top: 50%; transform: translateY(-50%); }

/* Middle Dual-Tone Gradient Ring */
.ring-mid {
  inset: -9px;
  border: 1.5px solid transparent;
  background: linear-gradient(135deg, rgba(66, 195, 254, 0.75) 0%, rgba(8, 107, 204, 0.15) 50%, rgba(66, 195, 254, 0.75) 100%) border-box;
  -webkit-mask: linear-gradient(#fff 0 0) padding-box, linear-gradient(#fff 0 0);
  mask: linear-gradient(#fff 0 0) padding-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  animation: spinCounter 16s linear infinite;
}

/* Inner Neon Glow Ring */
.ring-inner {
  inset: -2px;
  border: 1px solid rgba(66, 195, 254, 0.5);
  box-shadow: inset 0 0 12px rgba(66, 195, 254, 0.4), 0 0 14px rgba(66, 195, 254, 0.3);
  animation: pulseGlowRing 2.5s ease-in-out infinite alternate;
}

@keyframes spinClockwise {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}

@keyframes spinCounter {
  from { transform: rotate(0deg); }
  to   { transform: rotate(-360deg); }
}

@keyframes pulseGlowRing {
  0% { opacity: 0.6; box-shadow: inset 0 0 8px rgba(66, 195, 254, 0.2), 0 0 10px rgba(66, 195, 254, 0.2); }
  100% { opacity: 1; box-shadow: inset 0 0 16px rgba(66, 195, 254, 0.6), 0 0 20px rgba(66, 195, 254, 0.5); }
}

/* Cyber Corner Brackets Flanking the Circular Emblem */
.logo-corner-brackets {
  position: absolute;
  inset: -14px;
  pointer-events: none;
  z-index: 2;
}
.bracket-item {
  position: absolute;
  width: 14px;
  height: 14px;
  border-color: #42c3fe;
  border-style: solid;
  opacity: 0.7;
  transition: all 0.3s ease;
}
.b-tl { top: 0; left: 0; border-width: 2px 0 0 2px; }
.b-tr { top: 0; right: 0; border-width: 2px 2px 0 0; }
.b-bl { bottom: 0; left: 0; border-width: 0 0 2px 2px; }
.b-br { bottom: 0; right: 0; border-width: 0 2px 2px 0; }

.hero-logo-showcase:hover .bracket-item {
  opacity: 1;
  border-color: #38bdf8;
  box-shadow: 0 0 12px rgba(66, 195, 254, 0.9);
  transform: scale(1.18);
}

/* Logo Disc Container (Circular Emblem) */
.logo-disc {
  position: relative;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  overflow: hidden;
  background: radial-gradient(circle, rgba(10, 28, 54, 0.95) 0%, rgba(3, 10, 24, 0.98) 100%);
  box-shadow: 0 12px 35px rgba(0, 0, 0, 0.8), 0 0 25px rgba(66, 195, 254, 0.35);
  border: 2px solid rgba(66, 195, 254, 0.6);
  z-index: 3;
  cursor: pointer;
  animation: logoLevitate 4.5s ease-in-out infinite alternate;
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.35s ease, border-color 0.3s ease;
}

@keyframes logoLevitate {
  0% {
    transform: translateY(0) rotate(0deg);
  }
  50% {
    transform: translateY(-6px) rotate(0.6deg);
  }
  100% {
    transform: translateY(2px) rotate(-0.6deg);
  }
}

.hero-logo-showcase:hover .logo-disc {
  transform: scale(1.06) translateY(-4px);
  border-color: #42c3fe;
  box-shadow: 0 18px 45px rgba(0, 0, 0, 0.9), 0 0 40px rgba(66, 195, 254, 0.7);
}

/* The Image Itself */
.hero-uni-logo {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  border-radius: 50%;
  pointer-events: none;
  transition: filter 0.3s ease, transform 0.4s ease;
}

.hero-logo-showcase:hover .hero-uni-logo {
  filter: brightness(1.08) contrast(1.05);
}

/* Holographic Shimmer Light Sweep across the Emblem */
.logo-shimmer-sweep {
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: linear-gradient(
    60deg,
    transparent 35%,
    rgba(255, 255, 255, 0.45) 50%,
    transparent 65%
  );
  transform: rotate(25deg) translateY(-120%);
  pointer-events: none;
  z-index: 4;
  animation: shimmerSweep 4.5s ease-in-out infinite;
}

@keyframes shimmerSweep {
  0%, 65% {
    transform: rotate(25deg) translateY(-120%);
    opacity: 0;
  }
  75% {
    opacity: 0.9;
  }
  85%, 100% {
    transform: rotate(25deg) translateY(120%);
    opacity: 0;
  }
}

/* Energy Wave Pulse on Click / Tap */
.logo-ring-pulse {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 2px solid #42c3fe;
  opacity: 0;
  pointer-events: none;
  z-index: 5;
}
.hero-logo-showcase:active .logo-ring-pulse {
  animation: clickRipple 0.6s ease-out;
}
@keyframes clickRipple {
  0% { transform: scale(1); opacity: 0.8; }
  100% { transform: scale(1.4); opacity: 0; }
}

.uni-badge {
  display: inline-flex; align-items: center; gap: 10px;
  background: rgba(66, 195, 254, 0.08);
  border: 1px solid rgba(66, 195, 254, 0.3);
  border-radius: var(--pill);
  padding: 8px 22px;
  font-family: var(--font-body);
  font-size: clamp(9.5px, 1.6vw, 11.5px);
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: clamp(16px, 2.8vw, 28px);
  animation: fadeUp 0.7s ease 0.15s both;
  text-align: center;
  box-shadow: 0 0 16px rgba(66, 195, 254, 0.12);
}
.uni-badge-pulse {
  width: 8px; height: 8px; border-radius: 50%;
  background: #42c3fe;
  box-shadow: 0 0 10px #42c3fe, 0 0 20px rgba(66, 195, 254, 0.6);
  animation: pulse 2s ease-in-out infinite;
  flex-shrink: 0;
}
@keyframes pulse { 0%,100%{opacity:1;transform:scale(1)} 50%{opacity:0.5;transform:scale(1.6)} }

.hero-title {
  font-family: var(--font-display);
  font-weight: 900;
  text-align: center;
  line-height: 1.1;
  margin-bottom: clamp(14px, 2.2vw, 24px);
  animation: fadeUp 0.7s ease 0.08s both;
  letter-spacing: -0.01em;
}
.hero-line1 {
  display: block;
  font-size: clamp(2.3rem, 7.8vw, 5.4rem);
  background: linear-gradient(90deg, var(--hero-grad-start) 0%, var(--hero-grad-mid) 50%, var(--hero-grad-end) 100%);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
  letter-spacing: -0.02em;
  filter: drop-shadow(0 0 35px rgba(66, 195, 254, 0.3));
}
.hero-line2 {
  display: block;
  font-size: clamp(1.35rem, 4.3vw, 3.2rem);
  color: var(--txt-heading);
  opacity: 0.9;
  font-weight: 600;
  letter-spacing: 0.02em;
  margin-top: 10px;
}

.hero-sub {
  font-family: var(--font-body);
  font-size: clamp(12px, 1.8vw, 15px);
  color: var(--txt2);
  letter-spacing: 0.04em;
  text-align: center;
  margin-bottom: clamp(24px, 4.5vw, 44px);
  animation: fadeUp 0.7s ease 0.14s both;
}
.hero-sub span { color: var(--cyan); font-weight: 600; }

.notice-card {
  --sf-thickness: 3px;
  --_cut: 28px;
  --_bracket: 90px;
  position: relative;
  width: min(740px, 95vw);
  background: linear-gradient(145deg, rgba(8, 22, 44, 0.88) 0%, rgba(3, 10, 24, 0.97) 100%);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  clip-path: polygon(
    var(--_cut) 0%,
    100% 0%,
    100% calc(100% - var(--_cut)),
    calc(100% - var(--_cut)) 100%,
    0% 100%,
    0% var(--_cut)
  );
  border: none !important;
  padding: clamp(18px, 3vw, 24px) clamp(20px, 3.5vw, 32px);
  margin-bottom: clamp(24px, 4.5vw, 40px);
  font-size: clamp(12px, 1.8vw, 14px);
  line-height: 1.75;
  color: var(--txt);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.75);
  transition: transform 0.25s ease, filter 0.25s ease;
}
.notice-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: var(--_bracket);
  height: var(--_bracket);
  background: linear-gradient(135deg, #42c3fe 0%, #086bcc 100%);
  pointer-events: none;
  z-index: 2;
  clip-path: polygon(
    0% var(--_cut),
    var(--_cut) 0%,
    100% 0%,
    100% var(--sf-thickness),
    calc(var(--_cut) + 1.2px) var(--sf-thickness),
    var(--sf-thickness) calc(var(--_cut) + 1.2px),
    var(--sf-thickness) 100%,
    0% 100%
  );
}
.notice-card::after {
  content: '';
  position: absolute;
  bottom: 0;
  right: 0;
  width: var(--_bracket);
  height: var(--_bracket);
  background: linear-gradient(135deg, #086bcc 0%, #42c3fe 100%);
  pointer-events: none;
  z-index: 2;
  clip-path: polygon(
    100% calc(100% - var(--_cut)),
    calc(100% - var(--_cut)) 100%,
    0% 100%,
    0% calc(100% - var(--sf-thickness)),
    calc(100% - var(--_cut) - 1.2px) calc(100% - var(--sf-thickness)),
    calc(100% - var(--sf-thickness)) calc(100% - var(--_cut) - 1.2px),
    calc(100% - var(--sf-thickness)) 0%,
    100% 0%
  );
}
.notice-label {
  font-family: var(--font-display);
  font-size: clamp(9px, 1.4vw, 11px);
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 8px;
  display: flex; align-items: center; gap: 6px;
  position: relative;
  z-index: 3;
}
.notice-card strong { color: var(--txt); font-weight: 600; position: relative; z-index: 3; }
.notice-card code {
  font-family: var(--font-mono);
  color: var(--cyan);
  background: rgba(66, 195, 254, 0.1);
  padding: 2px 6px;
  border-radius: 4px;
  border: 1px solid rgba(66, 195, 254, 0.2);
  position: relative;
  z-index: 3;
}

.cta-group {
  display: flex; flex-wrap: wrap; justify-content: center; align-items: center;
  gap: clamp(12px, 2vw, 18px);
  animation: fadeUp 0.7s ease 0.28s both;
}

.btn-primary {
  position: relative;
  display: inline-flex; align-items: center; justify-content: center;
  gap: 10px;
  padding: clamp(14px, 2.2vw, 18px) clamp(28px, 4.5vw, 44px);
  font-family: var(--font-body);
  font-size: clamp(13px, 2vw, 15.5px);
  font-weight: 700;
  color: #000000;
  background: linear-gradient(90deg, #42c3fe 0%, #086bcc 100%);
  border: none;
  border-radius: var(--pill);
  cursor: pointer;
  outline: none;
  text-decoration: none;
  overflow: hidden;
  white-space: nowrap;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  box-shadow: 0 0 28px rgba(66, 195, 254, 0.45), 0 4px 18px rgba(0, 0, 0, 0.5);
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}
[data-theme="light"] .btn-primary {
  color: #ffffff;
}
.btn-primary::after {
  content: '';
  position: absolute; top: 0; left: -120%; width: 60%; height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.45), transparent);
  animation: shimmer 2.8s ease-in-out infinite;
  pointer-events: none;
}
@keyframes shimmer { 0%{left:-120%} 60%,100%{left:140%} }
.btn-primary:hover { 
  transform: translateY(-2px) scale(1.02); 
  box-shadow: 0 0 45px rgba(66, 195, 254, 0.7), 0 8px 24px rgba(8, 107, 204, 0.4); 
}
.btn-primary:active { transform: translateY(0) scale(0.98); }

.btn-secondary {
  position: relative;
  display: inline-flex; align-items: center; justify-content: center;
  gap: 10px;
  padding: clamp(13px, 2vw, 17px) clamp(24px, 4vw, 38px);
  font-family: var(--font-body);
  font-size: clamp(13px, 2vw, 15.5px);
  font-weight: 700;
  color: var(--cyan);
  background: rgba(66, 195, 254, 0.06);
  border: 1.5px solid rgba(66, 195, 254, 0.4);
  border-radius: var(--pill);
  cursor: pointer;
  outline: none;
  text-decoration: none;
  overflow: hidden;
  white-space: nowrap;
  transition: all 0.2s ease;
  backdrop-filter: blur(12px);
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
  letter-spacing: 0.03em;
}
.btn-secondary::before {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(66, 195, 254, 0.15), rgba(8, 107, 204, 0.1));
  opacity: 0;
  transition: opacity 0.2s ease;
}
.btn-secondary:hover { 
  border-color: #42c3fe; 
  color: #ffffff;
  box-shadow: 0 0 28px rgba(66, 195, 254, 0.35); 
  transform: translateY(-2px); 
}
.btn-secondary:hover::before { opacity: 1; }
.btn-secondary:active { transform: translateY(0) scale(0.98); }

.btn-icon { font-size: 1.1em; transition: transform 0.2s ease; position: relative; z-index: 1; }
.btn-primary:hover .btn-icon, .btn-secondary:hover .btn-icon { transform: translateX(3px); }
.btn-label { position: relative; z-index: 1; }

/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   STATS ROW & QUICK SUBJECTS
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
.stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: clamp(10px, 1.8vw, 18px);
  width: min(860px, 95vw);
  margin-top: clamp(28px, 4vw, 42px);
  animation: fadeUp 0.7s ease 0.32s both;
}
.stat-box {
  --sf-thickness: 2.5px;
  --_cut: 20px;
  --_bracket: 65px;
  position: relative;
  background: linear-gradient(145deg, rgba(8, 22, 44, 0.88) 0%, rgba(3, 10, 24, 0.97) 100%);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  clip-path: polygon(
    var(--_cut) 0%,
    100% 0%,
    100% calc(100% - var(--_cut)),
    calc(100% - var(--_cut)) 100%,
    0% 100%,
    0% var(--_cut)
  );
  border: none !important;
  border-radius: 0;
  padding: 18px 14px;
  text-align: center;
  transition: transform 0.25s ease, filter 0.25s ease;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.6);
}
.stat-box::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: var(--_bracket);
  height: var(--_bracket);
  background: linear-gradient(135deg, #42c3fe 0%, #086bcc 100%);
  pointer-events: none;
  z-index: 2;
  clip-path: polygon(
    0% var(--_cut),
    var(--_cut) 0%,
    100% 0%,
    100% var(--sf-thickness),
    calc(var(--_cut) + 1.2px) var(--sf-thickness),
    var(--sf-thickness) calc(var(--_cut) + 1.2px),
    var(--sf-thickness) 100%,
    0% 100%
  );
}
.stat-box::after {
  content: '';
  position: absolute;
  bottom: 0;
  right: 0;
  width: var(--_bracket);
  height: var(--_bracket);
  background: linear-gradient(135deg, #086bcc 0%, #42c3fe 100%);
  pointer-events: none;
  z-index: 2;
  clip-path: polygon(
    100% calc(100% - var(--_cut)),
    calc(100% - var(--_cut)) 100%,
    0% 100%,
    0% calc(100% - var(--sf-thickness)),
    calc(100% - var(--_cut) - 1.2px) calc(100% - var(--sf-thickness)),
    calc(100% - var(--sf-thickness)) calc(100% - var(--_cut) - 1.2px),
    calc(100% - var(--sf-thickness)) 0%,
    100% 0%
  );
}
.stat-box:hover {
  transform: translateY(-3px);
  filter: drop-shadow(0 0 18px rgba(66, 195, 254, 0.3));
}
.stat-box:hover::before, .stat-box:hover::after {
  background: #42c3fe;
  filter: drop-shadow(0 0 8px #42c3fe);
}
.stat-num {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3vw, 2.3rem);
  font-weight: 800;
  color: #fff;
  background: linear-gradient(90deg, #ffffff 0%, var(--cyan) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1;
  position: relative;
  z-index: 3;
}
.stat-lbl {
  font-family: var(--font-body);
  font-size: clamp(9px, 1.3vw, 10.5px);
  font-weight: 600;
  color: var(--txt2);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-top: 6px;
  position: relative;
  z-index: 3;
}

.quick-subjects-wrap {
  width: min(860px, 95vw);
  margin-top: clamp(24px, 3.5vw, 36px);
  text-align: center;
  animation: fadeUp 0.7s ease 0.36s both;
}
.quick-title {
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--cyan);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 14px;
}
.subject-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
}
.sub-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(66, 195, 254, 0.05);
  border: 1px solid var(--border);
  color: var(--txt2);
  padding: 8px 18px;
  border-radius: var(--pill);
  font-size: 0.84rem;
  font-weight: 600;
  font-family: var(--font-body);
  cursor: pointer;
  transition: all 0.2s ease;
}
.sub-pill:hover {
  background: rgba(66, 195, 254, 0.14);
  color: #ffffff;
  border-color: #42c3fe;
  transform: translateY(-2px);
  box-shadow: 0 0 16px rgba(66, 195, 254, 0.25);
}
.pill-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 6px var(--cyan);
  flex-shrink: 0;
}

.guidelines-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(12px, 2vw, 18px);
  width: min(860px, 95vw);
  margin-top: clamp(26px, 4vw, 40px);
  animation: fadeUp 0.7s ease 0.4s both;
}
.guide-card {
  --sf-thickness: 3px;
  --_cut: 28px;
  --_bracket: 80px;
  position: relative;
  background: linear-gradient(145deg, rgba(8, 22, 44, 0.88) 0%, rgba(3, 10, 24, 0.97) 100%);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  clip-path: polygon(
    var(--_cut) 0%,
    100% 0%,
    100% calc(100% - var(--_cut)),
    calc(100% - var(--_cut)) 100%,
    0% 100%,
    0% var(--_cut)
  );
  border: none !important;
  border-radius: 0;
  padding: 24px 20px;
  text-align: left;
  transition: transform 0.25s ease, filter 0.25s ease, background 0.3s ease;
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.75);
}
.guide-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: var(--_bracket);
  height: var(--_bracket);
  background: linear-gradient(135deg, #42c3fe 0%, #086bcc 100%);
  pointer-events: none;
  z-index: 2;
  clip-path: polygon(
    0% var(--_cut),
    var(--_cut) 0%,
    100% 0%,
    100% var(--sf-thickness),
    calc(var(--_cut) + 1.2px) var(--sf-thickness),
    var(--sf-thickness) calc(var(--_cut) + 1.2px),
    var(--sf-thickness) 100%,
    0% 100%
  );
  transition: filter 0.25s ease;
}
.guide-card::after {
  content: '';
  position: absolute;
  bottom: 0;
  right: 0;
  width: var(--_bracket);
  height: var(--_bracket);
  background: linear-gradient(135deg, #086bcc 0%, #42c3fe 100%);
  pointer-events: none;
  z-index: 2;
  clip-path: polygon(
    100% calc(100% - var(--_cut)),
    calc(100% - var(--_cut)) 100%,
    0% 100%,
    0% calc(100% - var(--sf-thickness)),
    calc(100% - var(--_cut) - 1.2px) calc(100% - var(--sf-thickness)),
    calc(100% - var(--sf-thickness)) calc(100% - var(--_cut) - 1.2px),
    calc(100% - var(--sf-thickness)) 0%,
    100% 0%
  );
  transition: filter 0.25s ease;
}
.guide-card:hover {
  transform: translateY(-4px);
  filter: drop-shadow(0 0 22px rgba(66, 195, 254, 0.3));
}
.guide-card:hover::before, .guide-card:hover::after {
  background: #42c3fe;
  filter: drop-shadow(0 0 8px #42c3fe);
}
.guide-icon {
  font-size: 1.8rem;
  margin-bottom: 10px;
  position: relative;
  z-index: 3;
}
.guide-title {
  font-family: var(--font-body);
  font-size: 1.1rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 8px;
  position: relative;
  z-index: 3;
}
.guide-text {
  font-size: 0.85rem;
  color: var(--txt2);
  line-height: 1.65;
  position: relative;
  z-index: 3;
}

/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   BACK BUTTON
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
.back-btn {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(6, 12, 26, 0.88);
  border: 1px solid var(--border);
  border-radius: var(--pill);
  padding: 8px 20px;
  color: var(--txt2);
  font-family: var(--font-body);
  font-size: clamp(11.5px, 1.8vw, 13px);
  font-weight: 600;
  cursor: pointer;
  z-index: 20;
  white-space: nowrap;
  transition: all 0.2s ease;
  -webkit-tap-highlight-color: transparent;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  align-self: flex-start;
  margin-bottom: clamp(14px, 2.5vw, 22px);
}
.back-btn:hover { 
  background: rgba(66, 195, 254, 0.14); 
  color: #ffffff; 
  border-color: #42c3fe;
  box-shadow: 0 0 16px rgba(66, 195, 254, 0.25);
  transform: translateX(-2px);
}
.back-btn:focus-visible { outline: 2px solid var(--cyan); outline-offset: 3px; }

/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   SECTION HEADERS
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
.section-header {
  text-align: center;
  margin-bottom: clamp(24px, 4.5vw, 44px);
  width: 100%;
  animation: fadeUp 0.5s ease both;
}
.section-eyebrow {
  font-family: var(--font-display);
  font-size: clamp(9px, 1.4vw, 11px);
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 8px;
}
.section-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.6rem, 4.5vw, 2.8rem);
  line-height: 1.15;
  letter-spacing: -0.01em;
}
.section-title em {
  font-style: normal;
  background: linear-gradient(90deg, #42c3fe 0%, #086bcc 100%);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.section-desc {
  color: var(--txt2);
  font-size: clamp(12px, 1.9vw, 14.5px);
  margin-top: 8px;
}

/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   SUBJECTS & TOPICS PAGES
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
#subjects, #topics {
  justify-content: flex-start;
  padding-top: clamp(88px, 13vw, 118px);
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
  gap: clamp(18px, 2.5vw, 28px);
  width: min(1260px, 95vw);
  margin: 0 auto;
}

.subject-card, .topic-card {
  --sf-thickness: 3px;
  --_cut: 34px;
  --_bracket: 110px;
  --card-accent: #38bdf8;
  --card-accent-dark: #0284c7;
  --card-glow: rgba(56, 189, 248, 0.45);
  --card-bg-tint: rgba(56, 189, 248, 0.08);
  --card-badge-bg: #38bdf8;
  --card-badge-text: #000000;
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 295px;
  gap: clamp(14px, 1.8vw, 18px);
  padding: clamp(26px, 3.2vw, 34px) clamp(22px, 2.6vw, 30px) clamp(32px, 4vw, 42px);
  background: linear-gradient(145deg, rgba(8, 22, 44, 0.88) 0%, rgba(3, 10, 24, 0.97) 100%);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  clip-path: polygon(
    var(--_cut) 0%,
    100% 0%,
    100% calc(100% - var(--_cut)),
    calc(100% - var(--_cut)) 100%,
    0% 100%,
    0% var(--_cut)
  );
  border: none !important;
  text-align: left;
  color: var(--txt);
  font-family: var(--font-body);
  text-decoration: none;
  overflow: hidden;
  cursor: pointer;
  isolation: isolate;
  opacity: 0;
  transform: translateY(16px);
  animation: cardIn 0.45s ease forwards;
  transition: transform 0.25s ease, filter 0.25s ease, background 0.3s ease;
  box-shadow: 0 18px 45px rgba(0, 0, 0, 0.85);
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}
.subject-card:nth-child(1), .topic-card:nth-child(1){animation-delay:0.04s}
.subject-card:nth-child(2), .topic-card:nth-child(2){animation-delay:0.08s}
.subject-card:nth-child(3), .topic-card:nth-child(3){animation-delay:0.12s}
.subject-card:nth-child(4), .topic-card:nth-child(4){animation-delay:0.16s}
.subject-card:nth-child(5), .topic-card:nth-child(5){animation-delay:0.20s}
@keyframes cardIn { to { opacity:1; transform:translateY(0); } }

.clickable { cursor: pointer; user-select: none; }

/* ═══════════════════════════════════════════════════════════════════════
   2-COLOR DUAL CYBER PALETTE (EXACT TWO COLORS FROM UPLOADED PHOTO)
   Color 1: Electric Sky Cyan (#42c3fe) - Matching Workshop 1
   Color 2: Deep Royal Blue   (#086bcc) - Matching Workshop 2
   ═══════════════════════════════════════════════════════════════════════ */

/* Color 1: Electric Sky Cyan (Subject 01, 03, 05) */
.subject-card[data-code="BTR50112"],
.topic-card[data-code="BTR50112"],
#raiCard,
#subjects .cards-grid > .subject-card:nth-of-type(1),
#topics .cards-grid > .topic-card:nth-of-type(1),
.subjects-grid > .subject-card:nth-of-type(1),
.subject-card[data-code="BTR50114"],
.topic-card[data-code="BTR50114"],
#tmmdCard,
#subjects .cards-grid > .subject-card:nth-of-type(3),
#topics .cards-grid > .topic-card:nth-of-type(3),
.subjects-grid > .subject-card:nth-of-type(3),
.subject-card[data-code="BTR50116"],
.topic-card[data-code="BTR50116"],
#raCard,
#subjects .cards-grid > .subject-card:nth-of-type(5),
#topics .cards-grid > .topic-card:nth-of-type(5),
.subjects-grid > .subject-card:nth-of-type(5) {
  --card-accent: #42c3fe;
  --card-accent-dark: #086bcc;
  --card-glow: rgba(66, 195, 254, 0.45);
  --card-bg-tint: rgba(66, 195, 254, 0.08);
  --card-badge-bg: #42c3fe;
  --card-badge-text: #000000;
}

/* Color 2: Deep Royal Blue (Subject 02, 04) */
.subject-card[data-code="BTR50113"],
.topic-card[data-code="BTR50113"],
#rsmCard,
#subjects .cards-grid > .subject-card:nth-of-type(2),
#topics .cards-grid > .topic-card:nth-of-type(2),
.subjects-grid > .subject-card:nth-of-type(2),
.subject-card[data-code="BTR50115"],
.topic-card[data-code="BTR50115"],
#peCard,
#subjects .cards-grid > .subject-card:nth-of-type(4),
#topics .cards-grid > .topic-card:nth-of-type(4),
.subjects-grid > .subject-card:nth-of-type(4) {
  --card-accent: #086bcc;
  --card-accent-dark: #42c3fe;
  --card-glow: rgba(8, 107, 204, 0.5);
  --card-bg-tint: rgba(8, 107, 204, 0.12);
  --card-badge-bg: #086bcc;
  --card-badge-text: #ffffff;
}

/* Top-Left Chamfered Cyber Bracket (Exact Match to Uploaded Photo) */
.subject-card::before, .topic-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: var(--_bracket, 110px);
  height: var(--_bracket, 110px);
  background: linear-gradient(135deg, var(--card-accent) 0%, var(--card-accent-dark) 100%);
  pointer-events: none;
  z-index: 2;
  clip-path: polygon(
    0% var(--_cut, 34px),
    var(--_cut, 34px) 0%,
    100% 0%,
    100% var(--sf-thickness, 3px),
    calc(var(--_cut, 34px) + 1.2px) var(--sf-thickness, 3px),
    var(--sf-thickness, 3px) calc(var(--_cut, 34px) + 1.2px),
    var(--sf-thickness, 3px) 100%,
    0% 100%
  );
  transition: filter 0.25s ease, background 0.25s ease;
}

/* Bottom-Right Chamfered Cyber Bracket (Exact Match to Uploaded Photo) */
.subject-card::after, .topic-card::after {
  content: '';
  position: absolute;
  bottom: 0;
  right: 0;
  width: var(--_bracket, 110px);
  height: var(--_bracket, 110px);
  background: linear-gradient(135deg, var(--card-accent-dark) 0%, var(--card-accent) 100%);
  pointer-events: none;
  z-index: 2;
  clip-path: polygon(
    100% calc(100% - var(--_cut, 34px)),
    calc(100% - var(--_cut, 34px)) 100%,
    0% 100%,
    0% calc(100% - var(--sf-thickness, 3px)),
    calc(100% - var(--_cut, 34px) - 1.2px) calc(100% - var(--sf-thickness, 3px)),
    calc(100% - var(--sf-thickness, 3px)) calc(100% - var(--_cut, 34px) - 1.2px),
    calc(100% - var(--sf-thickness, 3px)) 0%,
    100% 0%
  );
  transition: filter 0.25s ease, background 0.25s ease;
}

.subject-card:hover, .topic-card:hover {
  transform: translateY(-5px);
  background: linear-gradient(145deg, rgba(12, 32, 64, 0.94) 0%, rgba(4, 14, 34, 0.98) 100%);
  filter: drop-shadow(0 0 30px var(--card-glow));
}
.subject-card:hover::before, .topic-card:hover::before,
.subject-card:hover::after, .topic-card:hover::after {
  background: var(--card-accent);
  filter: drop-shadow(0 0 12px var(--card-accent));
}

/* Solid Subject Pill Badge (Exact Match to "Workshop 1" / "Workshop 2" in Photo) */
.card-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-body);
  font-size: clamp(11.5px, 1.4vw, 13px);
  font-weight: 700;
  color: var(--card-badge-text, #000000) !important;
  background: var(--card-badge-bg, var(--card-accent)) !important;
  padding: 5px 18px !important;
  border-radius: var(--pill) !important;
  width: fit-content;
  letter-spacing: 0.02em;
  text-transform: none;
  margin-bottom: 4px;
  box-shadow: 0 0 16px var(--card-glow);
  border: none !important;
  position: relative;
  z-index: 3;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.subject-card:hover .card-num, .topic-card:hover .card-num {
  transform: scale(1.04);
  box-shadow: 0 0 24px var(--card-accent);
}

/* Card Heading (Matches Photo Hierarchy) */
.card-name {
  font-family: var(--font-body);
  font-size: clamp(16.5px, 1.8vw, 19.5px);
  font-weight: 700;
  color: #ffffff;
  line-height: 1.36;
  margin-top: 4px;
  margin-bottom: 6px;
  min-height: 48px;
  display: flex;
  align-items: center;
  position: relative;
  z-index: 3;
}

.card-code {
  font-family: var(--font-mono);
  font-size: clamp(11.5px, 1.3vw, 13px);
  color: #94a3b8;
  font-weight: 500;
  letter-spacing: 0.05em;
  position: relative;
  z-index: 3;
}

.card-deadline {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: clamp(11.5px, 1.35vw, 13px);
  font-weight: 600;
  color: #e2e8f0;
  background: var(--card-bg-tint);
  border-left: 3px solid var(--card-accent);
  border-radius: 6px;
  padding: 8px 14px;
  position: relative;
  z-index: 3;
  white-space: normal;
  line-height: 1.45;
  word-break: break-word;
}

.card-status-ready {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: clamp(11px, 1.4vw, 12px);
  font-weight: 600;
  color: var(--card-accent);
  background: var(--card-bg-tint);
  border-radius: 6px;
  padding: 6px 12px;
  position: relative;
  z-index: 3;
  white-space: nowrap;
}

.card-actions {
  display: flex;
  gap: 10px;
  margin-top: auto;
  position: relative;
  z-index: 4;
  flex-wrap: wrap;
}
.card-action-btn {
  flex: 1 1 140px;
  min-height: 42px;
  padding: 9px 14px;
  font-size: clamp(0.78rem, 1.1vw, 0.85rem);
  font-weight: 700;
  font-family: var(--font-body);
  border-radius: var(--r2);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  white-space: nowrap;
}
.card-action-btn.primary {
  background: linear-gradient(90deg, var(--card-accent) 0%, var(--card-accent-dark) 100%);
  color: #000000;
  border: none;
}
[data-theme="light"] .card-action-btn.primary {
  color: #ffffff;
}
.card-action-btn.primary:hover {
  box-shadow: 0 0 18px var(--card-glow);
  transform: translateY(-1px);
}
.card-action-btn.secondary {
  background: var(--card-bg-tint);
  border: 1px solid var(--card-accent);
  color: var(--card-accent);
}
.card-action-btn.secondary:hover {
  background: var(--card-accent);
  color: #000000;
  border-color: var(--card-accent);
  box-shadow: 0 0 16px var(--card-glow);
}

.card-arrow {
  position: absolute;
  right: 20px;
  top: 20px;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--card-bg-tint);
  border: 1px solid var(--card-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  color: var(--card-accent);
  opacity: 0.85;
  transition: all 0.2s ease;
  z-index: 3;
}
.subject-card:hover .card-arrow, .topic-card:hover .card-arrow { 
  opacity: 1; 
  background: var(--card-accent);
  color: #000000;
  box-shadow: 0 0 18px var(--card-accent);
  transform: translate(2px, -2px);
}

/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   MASTER SEARCH & FILTER PILLS
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
.search-section-box {
  width: min(980px, 97vw);
  margin-top: clamp(24px, 4vw, 36px);
}
.filter-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
  margin: clamp(12px, 2vw, 18px) 0;
}
.filter-btn {
  background: rgba(66, 195, 254, 0.05);
  border: 1px solid var(--border);
  color: var(--txt2);
  font-family: var(--font-body);
  font-size: 0.83rem;
  font-weight: 600;
  padding: 6px 16px;
  border-radius: var(--pill);
  cursor: pointer;
  transition: all 0.2s ease;
}
.filter-btn:hover {
  color: var(--txt);
  border-color: rgba(66, 195, 254, 0.4);
  background: rgba(66, 195, 254, 0.1);
}
.filter-btn.active {
  background: linear-gradient(90deg, #42c3fe 0%, #086bcc 100%);
  color: #000000;
  border-color: transparent;
  font-weight: 700;
  box-shadow: 0 0 16px rgba(66, 195, 254, 0.4);
}
.filter-btn[data-filter="rai"].active,
.filter-btn[data-filter="tmmd"].active,
.filter-btn[data-filter="ra"].active {
  background: linear-gradient(90deg, #42c3fe 0%, #086bcc 100%);
  color: #000000;
  box-shadow: 0 0 16px rgba(66, 195, 254, 0.45);
}
.filter-btn[data-filter="rsm"].active,
.filter-btn[data-filter="pe"].active {
  background: linear-gradient(90deg, #086bcc 0%, #0284c7 100%);
  color: #ffffff;
  box-shadow: 0 0 16px rgba(8, 107, 204, 0.45);
}
[data-theme="light"] .filter-btn.active {
  color: #ffffff;
}

/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   DETAIL PAGES & TABLES
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
#deadlines, #rai-detail, #rsm-detail, #tmmd-detail, #pe-detail, #ra-detail {
  justify-content: flex-start;
  padding-top: clamp(88px, 13vw, 118px);
}

.detail-header {
  text-align: center;
  margin-bottom: clamp(16px, 3vw, 24px);
  width: 100%;
  animation: fadeUp 0.5s ease both;
}
.detail-header h2 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.4rem, 4vw, 2.5rem);
  letter-spacing: -0.01em;
  line-height: 1.2;
}
.detail-header h2 em {
  font-style: normal;
  background: linear-gradient(90deg, #42c3fe 0%, #086bcc 100%);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.detail-header p {
  color: var(--txt2);
  font-size: clamp(11.5px, 1.8vw, 13.5px);
  margin-top: 6px;
  font-family: var(--font-mono);
}

.detail-meta {
  display: flex; gap: 10px; justify-content: center; flex-wrap: wrap;
  margin-bottom: clamp(18px, 3vw, 28px);
  animation: fadeUp 0.5s ease 0.06s both;
}
.meta-pill {
  font-family: var(--font-mono);
  font-size: clamp(9px, 1.5vw, 11px);
  font-weight: 600;
  padding: 5px 14px;
  border-radius: var(--pill);
  border: 1px solid;
  letter-spacing: 0.06em;
}
.meta-pill.cyan  { color: var(--cyan); background: rgba(66, 195, 254, 0.1); border-color: rgba(66, 195, 254, 0.3); }
.meta-pill.slate { color: #94a3b8;    background: rgba(148,163,184,0.08); border-color: rgba(148,163,184,0.22); }
.meta-pill.amber { color: #38bdf8;   background: rgba(56, 189, 248, 0.1);  border-color: rgba(56, 189, 248, 0.25); }
.meta-pill.green { color: var(--green); background: rgba(16,185,129,0.1); border-color: rgba(16,185,129,0.25); }

/* Search Inputs */
.search-wrap {
  width: min(740px, 96vw);
  margin: 0 auto clamp(14px, 2.5vw, 20px);
  position: relative;
  animation: fadeUp 0.5s ease 0.1s both;
}
.search-icon {
  position: absolute;
  left: 18px; top: 50%;
  transform: translateY(-50%);
  color: var(--cyan);
  font-size: 15px;
  pointer-events: none;
}
.search-input {
  width: 100%;
  padding: clamp(11px, 2vw, 14px) clamp(16px, 2.5vw, 22px) clamp(11px, 2vw, 14px) 48px;
  background: var(--input-bg);
  border: 1.5px solid var(--border);
  border-radius: var(--pill);
  color: var(--txt);
  font-family: var(--font-body);
  font-size: max(16px, clamp(12px, 1.9vw, 14px));
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
  backdrop-filter: blur(14px);
  -webkit-appearance: none;
  appearance: none;
}
.search-input::placeholder { color: var(--txt3); }
.search-input:focus {
  border-color: #42c3fe;
  box-shadow: 0 0 0 3px rgba(66, 195, 254, 0.2), 0 0 20px rgba(66, 195, 254, 0.25);
}

.search-count {
  text-align: center;
  font-family: var(--font-mono);
  font-size: clamp(10px, 1.6vw, 11px);
  color: var(--txt3);
  margin-bottom: clamp(12px, 2vw, 18px);
  letter-spacing: 0.06em;
  animation: fadeUp 0.4s ease both;
}
.search-count strong { color: var(--cyan); }

/* Table Mobile Scroll Hint */
.table-scroll-hint {
  display: none;
}
@media (max-width: 768px) {
  .table-scroll-hint {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    width: min(860px, 97vw);
    gap: 6px;
    font-size: 11px;
    font-family: var(--font-mono);
    color: var(--cyan);
    margin-bottom: 6px;
    opacity: 0.9;
  }
}

/* Tables */
.table-wrap {
  width: min(980px, 97vw);
  overflow-x: auto;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  max-height: 64vh;
  border-radius: var(--r);
  border: 1px solid var(--table-border);
  background: var(--surface);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  box-shadow: var(--card-shadow);
  animation: fadeUp 0.5s ease 0.12s both;
  margin-bottom: clamp(24px, 4vw, 40px);
  transition: background 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}
.table-wrap::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
.table-wrap::-webkit-scrollbar-track {
  background: rgba(0, 0, 0, 0.35);
}
.table-wrap::-webkit-scrollbar-thumb {
  background: rgba(66, 195, 254, 0.3);
  border-radius: 4px;
}
.table-wrap::-webkit-scrollbar-thumb:hover {
  background: #42c3fe;
}
.data-table {
  width: 100%;
  min-width: 720px;
  border-collapse: collapse;
  font-size: clamp(11px, 1.55vw, 13px);
}
.data-table thead tr {
  background: var(--table-head-bg);
  border-bottom: 2px solid rgba(66, 195, 254, 0.35);
  position: sticky;
  top: 0;
  z-index: 5;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}
.data-table th {
  padding: clamp(12px, 2vw, 15px) clamp(10px, 1.8vw, 16px);
  text-align: left;
  font-family: var(--font-display);
  font-size: clamp(8.5px, 1.2vw, 10px);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--cyan);
  white-space: nowrap;
}
.data-table td {
  padding: clamp(11px, 1.8vw, 14px) clamp(10px, 1.8vw, 16px);
  border-bottom: 1px solid rgba(66, 195, 254, 0.08);
  vertical-align: middle;
  line-height: 1.5;
}
.data-table tbody tr:last-child td { border-bottom: none; }
.data-table tbody tr { transition: background 0.15s ease; }
.data-table tbody tr:hover { background: rgba(66, 195, 254, 0.07); }

.td-sl    { color: var(--txt3); font-weight: 600; white-space: nowrap; font-family: var(--font-mono); font-size: 0.9em; }
.td-code  { white-space: nowrap; }
.td-name  { color: var(--txt-heading); font-weight: 600; }
.td-date {
  white-space: nowrap;
  font-weight: 600;
  font-family: var(--font-mono);
  font-size: 0.88em;
}
.pres-date-val {
  color: var(--cyan);
  font-weight: 600;
}
.pres-date-tba {
  color: var(--txt3);
  font-weight: 500;
  opacity: 0.65;
}
[data-theme="light"] .pres-date-val {
  color: #0284c7;
}
.td-topic { color: var(--txt); max-width: 480px; line-height: 1.5; font-weight: 500; }
.td-empty {
  text-align: center;
  padding: 36px 16px !important;
  color: var(--txt3);
  font-style: italic;
}

/* Badges & Pills inside Table */
.code-pill {
  font-family: var(--font-mono);
  font-size: 0.85em;
  background: rgba(66, 195, 254, 0.1);
  border: 1px solid rgba(66, 195, 254, 0.25);
  padding: 3px 8px;
  border-radius: 4px;
  color: var(--cyan);
  font-weight: 600;
  white-space: nowrap;
}
.sub-tag {
  display: inline-block;
  font-size: 0.74rem;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 4px;
  white-space: nowrap;
  font-family: var(--font-mono);
}
.sub-tag.rai  { color: #42c3fe; background: rgba(66, 195, 254, 0.12); border: 1px solid rgba(66, 195, 254, 0.3); }
.sub-tag.rsm  { color: #38bdf8; background: rgba(56, 189, 248, 0.12); border: 1px solid rgba(56, 189, 248, 0.3); }
.sub-tag.tmmd { color: #60a5fa; background: rgba(96, 165, 250, 0.12); border: 1px solid rgba(96, 165, 250, 0.3); }
.sub-tag.pe   { color: #10b981; background: rgba(16, 185, 129, 0.12); border: 1px solid rgba(16, 185, 129, 0.3); }
.sub-tag.ra   { color: #086bcc; background: rgba(8, 107, 204, 0.15); border: 1px solid rgba(8, 107, 204, 0.35); }

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 3px 9px;
  border-radius: var(--pill);
}
.status-badge.live {
  color: var(--green);
  background: rgba(16, 185, 129, 0.12);
  border: 1px solid rgba(16, 185, 129, 0.25);
}

.table-btn-submit {
  background: linear-gradient(90deg, #42c3fe 0%, #086bcc 100%);
  border: none;
  color: #000000;
  font-family: var(--font-body);
  font-size: 0.78rem;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: var(--pill);
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
  box-shadow: 0 0 10px rgba(66, 195, 254, 0.35);
}
[data-theme="light"] .table-btn-submit {
  color: #ffffff;
}
.table-btn-submit:hover {
  box-shadow: 0 0 18px rgba(66, 195, 254, 0.6);
  transform: scale(1.04);
}

/* Detail Bottom CTA */
.detail-footer-action {
  margin-top: clamp(14px, 2.5vw, 24px);
  display: flex;
  justify-content: center;
}

/* Evaluation Rubric */
.evaluation-rules-box {
  width: min(980px, 97vw);
  margin-top: clamp(20px, 3vw, 32px);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: clamp(18px, 3vw, 26px);
  backdrop-filter: blur(16px);
  position: relative;
  overflow: hidden;
}
.evaluation-rules-box::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; height: 2px;
  background: linear-gradient(90deg, #42c3fe, #086bcc);
}
.evaluation-rules-box h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 16px;
  text-align: center;
}
.rubric-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}
.rubric-item {
  --sf-thickness: 2.5px;
  --_cut: 16px;
  --_bracket: 50px;
  position: relative;
  background: linear-gradient(145deg, rgba(8, 22, 44, 0.88) 0%, rgba(3, 10, 24, 0.97) 100%);
  clip-path: polygon(
    var(--_cut) 0%,
    100% 0%,
    100% calc(100% - var(--_cut)),
    calc(100% - var(--_cut)) 100%,
    0% 100%,
    0% var(--_cut)
  );
  border: none !important;
  padding: 14px 10px;
  text-align: center;
  transition: transform 0.25s ease;
}
.rubric-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: var(--_bracket);
  height: var(--_bracket);
  background: #42c3fe;
  pointer-events: none;
  clip-path: polygon(
    0% var(--_cut),
    var(--_cut) 0%,
    100% 0%,
    100% var(--sf-thickness),
    calc(var(--_cut) + 1.2px) var(--sf-thickness),
    var(--sf-thickness) calc(var(--_cut) + 1.2px),
    var(--sf-thickness) 100%,
    0% 100%
  );
}
.rubric-item::after {
  content: '';
  position: absolute;
  bottom: 0;
  right: 0;
  width: var(--_bracket);
  height: var(--_bracket);
  background: #42c3fe;
  pointer-events: none;
  clip-path: polygon(
    100% calc(100% - var(--_cut)),
    calc(100% - var(--_cut)) 100%,
    0% 100%,
    0% calc(100% - var(--sf-thickness)),
    calc(100% - var(--_cut) - 1.2px) calc(100% - var(--sf-thickness)),
    calc(100% - var(--sf-thickness)) calc(100% - var(--_cut) - 1.2px),
    calc(100% - var(--sf-thickness)) 0%,
    100% 0%
  );
}
.rubric-percent {
  display: block;
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--cyan);
  line-height: 1;
  margin-bottom: 4px;
  position: relative;
  z-index: 3;
}
.rubric-label {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--txt2);
  line-height: 1.35;
  position: relative;
  z-index: 3;
}

/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   INTERACTIVE SUBMISSION MODAL
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.88);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s ease, visibility 0.25s ease;
}
.modal-backdrop.open {
  opacity: 1;
  visibility: visible;
}
.modal-box {
  position: relative;
  width: 100%;
  max-width: 580px;
  background: var(--modal-bg);
  border: 1px solid var(--modal-border);
  border-radius: var(--r);
  padding: clamp(22px, 4vw, 32px) clamp(18px, 3.5vw, 28px);
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.7), 0 0 40px var(--cyan-glow);
  max-height: 92vh;
  overflow-y: auto;
  transform: translateY(20px) scale(0.98);
  transition: transform 0.25s ease, background 0.3s ease;
}
.modal-box::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; height: 2px;
  background: linear-gradient(90deg, #42c3fe, #086bcc);
}
.modal-backdrop.open .modal-box {
  transform: translateY(0) scale(1);
}
.modal-close-btn {
  position: absolute;
  top: 14px; right: 14px;
  background: rgba(66, 195, 254, 0.08);
  border: 1px solid var(--border);
  color: var(--txt2);
  width: 32px; height: 32px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 14px;
  cursor: pointer;
  transition: all 0.2s ease;
  z-index: 10;
}
.modal-close-btn:hover {
  background: #42c3fe;
  color: #000000;
  box-shadow: 0 0 12px rgba(66, 195, 254, 0.5);
}

.modal-header {
  margin-bottom: 20px;
}
.modal-eyebrow {
  font-family: var(--font-display);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 6px;
}
.modal-title {
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 3.2vw, 1.55rem);
  font-weight: 800;
  color: #fff;
  line-height: 1.25;
}
.modal-sub {
  font-size: 0.84rem;
  color: var(--txt2);
  margin-top: 6px;
}

/* Form Styles */
.submit-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.form-row.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
.form-label {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--txt2);
  display: flex;
  justify-content: space-between;
}
.form-label span.req {
  color: var(--rose);
}
.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 10px 14px;
  background: var(--input-bg);
  border: 1px solid var(--border);
  border-radius: var(--r2);
  color: var(--txt);
  font-family: var(--font-body);
  font-size: 0.88rem;
  outline: none;
  transition: border-color 0.18s ease, box-shadow 0.18s ease;
  -webkit-appearance: none;
  appearance: none;
}
.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: #42c3fe;
  box-shadow: 0 0 0 3px rgba(66, 195, 254, 0.18);
}
.form-select {
  cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2342c3fe' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 36px;
}
.form-select option {
  background: #060c1a;
  color: #fff;
}

/* File Upload Zone */
.dropzone {
  border: 2px dashed rgba(66, 195, 254, 0.35);
  border-radius: var(--r2);
  padding: 22px 16px;
  text-align: center;
  background: rgba(66, 195, 254, 0.03);
  cursor: pointer;
  transition: all 0.2s ease;
}
.dropzone:hover, .dropzone.dragover {
  border-color: #42c3fe;
  background: rgba(66, 195, 254, 0.08);
  box-shadow: 0 0 20px rgba(66, 195, 254, 0.2);
}
.dropzone-icon {
  font-size: 2rem;
  color: var(--cyan);
  margin-bottom: 6px;
}
.dropzone-text {
  font-size: 0.84rem;
  color: var(--txt);
  font-weight: 600;
}
.dropzone-hint {
  font-size: 0.74rem;
  color: var(--txt3);
  margin-top: 4px;
}
.file-selected-box {
  display: none;
  align-items: center;
  justify-content: space-between;
  background: rgba(66, 195, 254, 0.1);
  border: 1px solid rgba(66, 195, 254, 0.3);
  padding: 8px 14px;
  border-radius: var(--r2);
  margin-top: 8px;
}
.file-selected-name {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--cyan);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.file-remove-btn {
  background: transparent;
  border: none;
  color: var(--rose);
  font-size: 1.2rem;
  cursor: pointer;
  padding: 2px 6px;
}

/* Actions */
.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 20px;
}

/* Success Receipt */
.success-icon {
  width: 54px; height: 54px;
  border-radius: 50%;
  background: rgba(16, 185, 129, 0.15);
  border: 2px solid var(--green);
  color: var(--green);
  font-size: 26px;
  font-weight: 900;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 14px auto;
  box-shadow: 0 0 24px rgba(16, 185, 129, 0.3);
}
.success-title {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
  color: #fff;
  text-align: center;
  margin-bottom: 4px;
}
.success-sub {
  font-size: 0.84rem;
  color: var(--txt2);
  text-align: center;
  margin-bottom: 18px;
}
.receipt-card {
  background: rgba(66, 195, 254, 0.04);
  border: 1px solid var(--border);
  border-radius: var(--r2);
  padding: 15px 16px;
  text-align: left;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.receipt-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
  font-size: 0.84rem;
}
.receipt-label {
  color: var(--txt3);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  white-space: nowrap;
}
.receipt-val {
  font-weight: 600;
  color: var(--txt);
  text-align: right;
}
.receipt-val.code {
  color: var(--cyan);
  font-family: var(--font-mono);
  letter-spacing: 0.05em;
}

/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   TOAST NOTIFICATION
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
.toast-popup {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: rgba(4, 8, 18, 0.95);
  border: 1px solid #42c3fe;
  border-radius: var(--r2);
  color: #fff;
  padding: 12px 22px;
  font-size: 0.88rem;
  font-weight: 600;
  font-family: var(--font-body);
  box-shadow: 0 12px 35px rgba(0, 0, 0, 0.75), 0 0 24px rgba(66, 195, 254, 0.3);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  z-index: 2000;
  opacity: 0;
  transform: translateY(12px);
  pointer-events: none;
  transition: all 0.25s ease;
}
.toast-popup.show {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   SITE FOOTER SYSTEM
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
.site-footer {
  position: relative;
  z-index: 10;
  width: 100%;
  margin-top: auto;
  border-top: 1px solid var(--border);
  background: linear-gradient(180deg, rgba(4, 7, 18, 0.78) 0%, rgba(2, 4, 10, 0.97) 100%);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  padding: clamp(28px, 4vw, 42px) clamp(16px, 4vw, 32px) clamp(30px, 4.5vw, 46px);
  text-align: center;
  box-shadow: 0 -12px 35px rgba(0, 0, 0, 0.55);
  box-sizing: border-box;
}

[data-theme="light"] .site-footer {
  background: linear-gradient(180deg, rgba(248, 252, 255, 0.94) 0%, rgba(236, 244, 253, 0.98) 100%);
  border-top-color: rgba(8, 107, 204, 0.2);
  box-shadow: 0 -8px 24px rgba(8, 28, 64, 0.05);
}

.footer-container {
  width: min(900px, 94vw);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.footer-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(66, 195, 254, 0.08);
  border: 1px solid rgba(66, 195, 254, 0.25);
  border-radius: var(--pill);
  padding: 5px 16px;
  font-family: var(--font-body);
  font-size: clamp(0.72rem, 1.2vw, 0.8rem);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--cyan);
}

.footer-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #42c3fe;
  box-shadow: 0 0 8px #42c3fe;
  animation: pulse 2s infinite ease-in-out;
}

.footer-text {
  font-family: var(--font-body);
  font-size: clamp(0.85rem, 1.35vw, 0.95rem);
  color: var(--txt);
  line-height: 1.65;
  margin: 0;
  max-width: 720px;
}

.footer-author {
  color: var(--cyan);
  font-weight: 700;
  text-shadow: 0 0 12px var(--cyan-glow);
}

.footer-meta {
  font-family: var(--font-mono);
  font-size: clamp(0.7rem, 1.1vw, 0.78rem);
  color: var(--txt3);
  letter-spacing: 0.04em;
  margin-top: 2px;
}

/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   SUBMIT.HTML STANDALONE COMPATIBILITY
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
.subjects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
  width: min(1100px, 96vw);
  margin-top: 30px;
}
.subject-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}
.subject-code-badge {
  font-family: var(--font-body);
  font-size: 0.82rem;
  color: var(--card-badge-text, #000000);
  background: var(--card-badge-bg, var(--card-accent));
  padding: 4px 14px;
  border-radius: var(--pill);
  font-weight: 700;
  box-shadow: 0 0 14px var(--card-glow);
  border: none;
}
.subject-credits {
  font-size: 0.76rem;
  color: var(--txt3);
}
.subject-icon-wrap {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--card-bg-tint);
  border: 1px solid var(--card-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--card-accent);
  margin-bottom: 14px;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.subject-card:hover .subject-icon-wrap {
  transform: scale(1.08);
  box-shadow: 0 0 16px var(--card-glow);
}
.subject-icon-wrap svg {
  width: 22px;
  height: 22px;
}
.subject-title {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 8px;
  line-height: 1.35;
}
.subject-desc {
  font-size: 0.84rem;
  color: var(--txt2);
  line-height: 1.6;
  margin-bottom: 16px;
  flex: 1;
}
.subject-meta {
  display: flex;
  justify-content: space-between;
  font-size: 0.76rem;
  color: var(--txt3);
  padding-top: 12px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  margin-bottom: 16px;
}
.btn-submit-subject {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  padding: 10px 18px;
  background: linear-gradient(90deg, var(--card-accent) 0%, var(--card-accent-dark) 100%);
  color: #000000;
  border: none;
  border-radius: var(--pill);
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 0.85rem;
  cursor: pointer;
  transition: all 0.2s ease;
  box-shadow: 0 0 16px var(--card-glow);
}
.btn-submit-subject svg {
  width: 16px;
  height: 16px;
}
.btn-submit-subject:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 25px var(--card-glow);
}

/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   KEYFRAMES & RESPONSIVE DESIGN
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(18px); }
  to   { opacity: 1; transform: translateY(0); }
}

@media (max-width: 1024px) {
  .cards-grid {
    grid-template-columns: repeat(2, 1fr);
    width: min(940px, 95vw);
    gap: 18px;
  }
  .table-wrap { max-height: 58vh; }
  .rubric-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 860px) {
  .cards-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .hero-line1 { font-size: clamp(2rem, 7.5vw, 3.8rem); }
  .hero-line2 { font-size: clamp(1.2rem, 4.5vw, 2.2rem); }
  .stats-row { grid-template-columns: repeat(2, 1fr); }
  .guidelines-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .site-nav-wrap {
    top: max(8px, env(safe-area-inset-top, 8px));
    padding: 0 10px;
    width: 100%;
    box-sizing: border-box;
  }
  .site-nav {
    display: grid !important;
    grid-template-columns: 1fr auto !important;
    grid-template-rows: auto auto !important;
    grid-template-areas:
      "brand actions"
      "links links" !important;
    width: 100% !important;
    max-width: 500px !important;
    padding: 8px 12px 8px 14px !important;
    gap: 8px 8px !important;
    border-radius: 20px !important;
    background: var(--nav-bg) !important;
    backdrop-filter: blur(25px) !important;
    -webkit-backdrop-filter: blur(25px) !important;
    box-shadow: 0 10px 32px rgba(0, 0, 0, 0.55), 0 0 1px rgba(66, 195, 254, 0.4) !important;
    box-sizing: border-box !important;
  }
  .nav-brand {
    grid-area: brand !important;
    display: flex !important;
    align-items: center !important;
    justify-self: start !important;
    gap: 8px !important;
    flex-shrink: 0 !important;
    margin: 0 !important;
  }
  .nav-brand-logo {
    width: 26px !important;
    height: 26px !important;
  }
  .nav-title {
    font-size: 0.92rem !important;
    font-weight: 800 !important;
    display: block !important;
    color: var(--txt-heading) !important;
    letter-spacing: 0.05em !important;
  }
  .nav-sub { display: none !important; }
  .nav-actions {
    grid-area: actions !important;
    display: flex !important;
    align-items: center !important;
    justify-self: end !important;
    gap: 8px !important;
    flex-shrink: 0 !important;
    margin: 0 !important;
  }
  .theme-toggle-btn {
    width: 34px !important;
    height: 34px !important;
    min-width: 34px !important;
    border-radius: 50% !important;
  }
  .nav-btn-submit {
    padding: 6px 14px !important;
    font-size: 0.78rem !important;
    min-height: 34px !important;
    border-radius: var(--pill) !important;
    gap: 5px !important;
  }
  .nav-links {
    grid-area: links !important;
    display: grid !important;
    grid-template-columns: repeat(4, 1fr) !important;
    width: 100% !important;
    gap: 4px !important;
    background: rgba(0, 229, 255, 0.04) !important;
    padding: 3px !important;
    border-radius: 12px !important;
    border: 1px solid rgba(0, 229, 255, 0.12) !important;
    box-sizing: border-box !important;
    margin: 0 !important;
  }
  .nav-link {
    width: 100% !important;
    text-align: center !important;
    padding: 6px 3px !important;
    font-size: 0.78rem !important;
    font-weight: 600 !important;
    min-height: 32px !important;
    border-radius: 9px !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    box-sizing: border-box !important;
    white-space: nowrap !important;
  }

  /* Space from Logo and Page Top Spacing on Mobile/Tablets */
  .page { 
    padding: calc(env(safe-area-inset-top, 0px) + clamp(130px, 20vw, 150px)) clamp(12px, 3.5vw, 28px) clamp(36px, 6vw, 64px); 
  }
  #home { 
    padding-top: calc(env(safe-area-inset-top, 0px) + clamp(140px, 22vw, 165px)); 
  }
  #subjects, #topics, #deadlines, #rai-detail, #rsm-detail, #tmmd-detail, #pe-detail, #ra-detail, #submit-rsm {
    padding-top: calc(env(safe-area-inset-top, 0px) + clamp(130px, 20vw, 150px));
  }

  .hero-logo-showcase {
    width: clamp(120px, 30vw, 146px);
    height: clamp(120px, 30vw, 146px);
    margin: clamp(12px, 3vw, 20px) auto clamp(36px, 6vw, 48px);
  }
  .logo-corner-brackets {
    inset: -12px;
  }
  .uni-badge {
    padding: 7px 18px;
    font-size: clamp(9.5px, 2.2vw, 11px);
    letter-spacing: 0.08em;
    max-width: 94vw;
    box-sizing: border-box;
    white-space: normal;
    text-align: center;
    margin-bottom: clamp(18px, 3.5vw, 28px);
  }
  .section-title { font-size: clamp(1.4rem, 4.5vw, 2.4rem); }
  .detail-header h2 { font-size: clamp(1.3rem, 4vw, 2rem); }
  .back-btn { padding: 9px 16px; font-size: 12px; min-height: 40px; display: inline-flex; align-items: center; }
  .table-wrap { width: min(860px, 97vw); max-height: 54vh; }
  .toast-popup { bottom: 16px; right: 16px; left: 16px; text-align: center; }
}

@media (max-width: 380px) {
  .site-nav {
    padding: 6px 8px !important;
    gap: 6px 6px !important;
  }
  .nav-title {
    font-size: 0.84rem !important;
  }
  .nav-btn-submit {
    padding: 5px 9px !important;
    font-size: 0.72rem !important;
    gap: 3px !important;
  }
  .nav-link {
    font-size: 0.71rem !important;
    padding: 5px 1px !important;
  }
  .uni-badge {
    font-size: 9px !important;
    padding: 6px 12px !important;
  }
  .card-action-btn {
    min-height: 35px !important;
    height: 35px !important;
    font-size: 0.76rem !important;
    padding: 0 10px !important;
  }
}

@media (max-width: 640px) {
  .cards-grid {
    grid-template-columns: 1fr;
    width: 100%;
    max-width: 480px;
    gap: 16px;
    margin: 0 auto;
  }
  .subject-card, .topic-card {
    min-height: auto !important;
    padding: 22px 18px 24px !important;
  }
  .filter-pills {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 6px;
  }
  .table-scroll-hint {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 11.5px;
    color: var(--cyan);
    margin-bottom: 8px;
    opacity: 0.88;
  }
}

@media (max-width: 520px) {
  .card-actions {
    display: flex !important;
    flex-direction: column !important;
    gap: 8px !important;
    width: 100% !important;
    margin-top: 14px !important;
  }
  .card-action-btn {
    width: 100% !important;
    flex: 0 0 auto !important;
    min-height: 38px !important;
    height: 38px !important;
    padding: 0 14px !important;
    font-size: 0.8rem !important;
    font-weight: 700 !important;
    border-radius: 9px !important;
    text-align: center !important;
    justify-content: center !important;
    display: inline-flex !important;
    align-items: center !important;
  }
}

@media (max-width: 480px) {
  .site-nav-wrap {
    top: max(6px, env(safe-area-inset-top, 6px));
    padding: 0 8px;
  }
  .site-nav {
    padding: 7px 9px;
    gap: 6px;
    border-radius: 18px;
  }
  .nav-title { font-size: 0.86rem; }
  .nav-btn-submit {
    padding: 5px 11px;
    font-size: 0.76rem;
    min-height: 32px;
  }
  .nav-link {
    font-size: 0.74rem;
    padding: 5px 2px;
    min-height: 30px;
  }
  
  .hero-line1 { font-size: clamp(1.6rem, 7.5vw, 2.4rem); }
  .hero-line2 { font-size: clamp(0.95rem, 4.2vw, 1.4rem); }
  .notice-card { width: 100%; padding: 12px 14px; font-size: 0.85rem; }
  .cta-group { flex-direction: column; width: 100%; max-width: 360px; margin: 0 auto; gap: 10px; }
  .cta-group .btn-primary, .cta-group .btn-secondary { width: 100%; min-height: 46px; }
  .stats-row { grid-template-columns: repeat(2, 1fr); gap: 8px; max-width: 440px; margin: 0 auto; }
  .stat-box { padding: 12px 8px; }
  .stat-num { font-size: 1.4rem; }
  .stat-lbl { font-size: 9px; }
  .search-wrap { width: 100%; }
  .search-input { font-size: 0.85rem; min-height: 44px; }
  .detail-footer-action button { width: 100%; min-height: 46px; }
  .modal-box { width: 95vw; padding: 20px 16px; margin: 12px auto; }
}

@media (max-width: 380px) {
  .site-nav {
    padding: 6px 7px;
    gap: 5px;
  }
  .nav-brand-logo { width: 22px; height: 22px; }
  .nav-title { font-size: 0.8rem; }
  .nav-btn-submit {
    padding: 5px 8px;
    font-size: 0.72rem;
  }
  .nav-link {
    font-size: 0.7rem;
    padding: 4px 1px;
  }
  .card-action-btn { font-size: 0.74rem; padding: 7px 10px; }
}

/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   LIGHT THEME CARD ADAPTATIONS
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
[data-theme="light"] .subject-card,
[data-theme="light"] .topic-card,
[data-theme="light"] .guide-card,
[data-theme="light"] .stat-box,
[data-theme="light"] .notice-card,
[data-theme="light"] .rubric-item {
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.98) 0%, rgba(240, 246, 254, 0.95) 100%) !important;
  box-shadow: 0 10px 30px rgba(8, 28, 64, 0.1) !important;
}

/* Generic elements light brackets */
[data-theme="light"] .guide-card::before,
[data-theme="light"] .stat-box::before,
[data-theme="light"] .notice-card::before,
[data-theme="light"] .rubric-item::before,
[data-theme="light"] .guide-card::after,
[data-theme="light"] .stat-box::after,
[data-theme="light"] .notice-card::after,
[data-theme="light"] .rubric-item::after {
  background: linear-gradient(135deg, #086bcc 0%, #0284c7 100%) !important;
}

/* Subject cards light mode brackets (Inherits per-subject gradient) */
[data-theme="light"] .subject-card::before,
[data-theme="light"] .topic-card::before {
  background: linear-gradient(135deg, var(--card-accent) 0%, var(--card-accent-dark) 100%) !important;
}
[data-theme="light"] .subject-card::after,
[data-theme="light"] .topic-card::after {
  background: linear-gradient(135deg, var(--card-accent-dark) 0%, var(--card-accent) 100%) !important;
}

[data-theme="light"] .card-name,
[data-theme="light"] .subject-title {
  color: #040a16 !important;
}
[data-theme="light"] .card-num,
[data-theme="light"] .subject-code-badge {
  background: var(--card-badge-bg, var(--card-accent)) !important;
  color: var(--card-badge-text, #ffffff) !important;
  box-shadow: 0 0 14px var(--card-glow) !important;
}
[data-theme="light"] .card-deadline {
  color: #1e293b !important;
  background: var(--card-bg-tint) !important;
  border-left-color: var(--card-accent) !important;
}
[data-theme="light"] .card-status-ready {
  color: var(--card-accent) !important;
  background: var(--card-bg-tint) !important;
}
[data-theme="light"] .card-action-btn.secondary {
  border-color: var(--card-accent) !important;
  color: var(--card-accent) !important;
  background: var(--card-bg-tint) !important;
}
[data-theme="light"] .card-arrow {
  color: var(--card-accent) !important;
  border-color: var(--card-accent) !important;
  background: var(--card-bg-tint) !important;
}
[data-theme="light"] .card-arrow:hover {
  background: var(--card-accent) !important;
  color: #ffffff !important;
}

/* Light Theme: 2 Photo Colors (Sky Blue & Deep Royal Blue) */
[data-theme="light"] .subject-card[data-code="BTR50112"],
[data-theme="light"] .topic-card[data-code="BTR50112"],
[data-theme="light"] #raiCard,
[data-theme="light"] #subjects .cards-grid > .subject-card:nth-of-type(1),
[data-theme="light"] #topics .cards-grid > .topic-card:nth-of-type(1),
.subjects-grid > .subject-card:nth-of-type(1),
[data-theme="light"] .subject-card[data-code="BTR50114"],
[data-theme="light"] .topic-card[data-code="BTR50114"],
[data-theme="light"] #tmmdCard,
[data-theme="light"] #subjects .cards-grid > .subject-card:nth-of-type(3),
[data-theme="light"] #topics .cards-grid > .topic-card:nth-of-type(3),
.subjects-grid > .subject-card:nth-of-type(3),
[data-theme="light"] .subject-card[data-code="BTR50116"],
[data-theme="light"] .topic-card[data-code="BTR50116"],
[data-theme="light"] #raCard,
[data-theme="light"] #subjects .cards-grid > .subject-card:nth-of-type(5),
[data-theme="light"] #topics .cards-grid > .topic-card:nth-of-type(5),
.subjects-grid > .subject-card:nth-of-type(5) {
  --card-accent: #0284c7;
  --card-accent-dark: #0369a1;
  --card-glow: rgba(2, 132, 199, 0.25);
  --card-bg-tint: rgba(2, 132, 199, 0.08);
  --card-badge-bg: #0284c7;
  --card-badge-text: #ffffff;
}

[data-theme="light"] .subject-card[data-code="BTR50113"],
[data-theme="light"] .topic-card[data-code="BTR50113"],
[data-theme="light"] #rsmCard,
[data-theme="light"] #subjects .cards-grid > .subject-card:nth-of-type(2),
[data-theme="light"] #topics .cards-grid > .topic-card:nth-of-type(2),
.subjects-grid > .subject-card:nth-of-type(2),
[data-theme="light"] .subject-card[data-code="BTR50115"],
[data-theme="light"] .topic-card[data-code="BTR50115"],
[data-theme="light"] #peCard,
[data-theme="light"] #subjects .cards-grid > .subject-card:nth-of-type(4),
[data-theme="light"] #topics .cards-grid > .topic-card:nth-of-type(4),
.subjects-grid > .subject-card:nth-of-type(4) {
  --card-accent: #086bcc;
  --card-accent-dark: #034b94;
  --card-glow: rgba(8, 107, 204, 0.25);
  --card-bg-tint: rgba(8, 107, 204, 0.08);
  --card-badge-bg: #086bcc;
  --card-badge-text: #ffffff;
}

/* Light Theme Hero Logo Adaptation */
[data-theme="light"] .logo-ambient-aura {
  background: radial-gradient(circle, rgba(8, 107, 204, 0.22) 0%, rgba(2, 132, 199, 0.1) 50%, transparent 72%);
}
[data-theme="light"] .logo-disc {
  background: #ffffff;
  border-color: #086bcc;
  box-shadow: 0 12px 35px rgba(8, 28, 64, 0.14), 0 0 25px rgba(8, 107, 204, 0.22);
}
[data-theme="light"] .ring-outer {
  border-color: rgba(8, 107, 204, 0.35);
}
[data-theme="light"] .ring-outer .satellite-dot {
  background: #086bcc;
  box-shadow: 0 0 10px #086bcc;
}
[data-theme="light"] .bracket-item {
  border-color: #086bcc;
}
[data-theme="light"] .nav-brand-logo {
  border-color: rgba(8, 107, 204, 0.6);
  box-shadow: 0 0 8px rgba(8, 107, 204, 0.35);
}

/* ==========================================================================
   EMBEDDED GOOGLE FORM SUBMISSION PORTAL
   ========================================================================== */
.embed-page-wrap {
  width: 100%;
  max-width: 1020px;
  margin: 0 auto;
  padding-bottom: 60px;
}

.embed-top-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 24px;
}

.embed-page-header {
  margin-bottom: 20px;
}

.embed-page-header .detail-meta {
  margin-top: 12px;
}

.embed-toolbar {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}

.embed-toolbar-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  font-family: var(--font-body);
  font-size: 0.84rem;
  font-weight: 600;
  border-radius: var(--r2);
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--txt);
  cursor: pointer;
  text-decoration: none;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.embed-toolbar-btn:hover {
  border-color: var(--cyan);
  background: var(--surface2);
  color: var(--cyan);
  transform: translateY(-1px);
  box-shadow: 0 4px 14px var(--cyan-subtle);
}

.embed-toolbar-btn.primary {
  background: linear-gradient(135deg, var(--cyan) 0%, var(--blue) 100%);
  color: #ffffff;
  border-color: transparent;
  box-shadow: 0 4px 15px var(--cyan-glow);
}

.embed-toolbar-btn.primary:hover {
  box-shadow: 0 6px 22px var(--cyan-glow);
  transform: translateY(-2px);
}

.embed-notice-box {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 4px solid var(--cyan);
  border-radius: var(--r2);
  padding: 14px 18px;
  margin-bottom: 20px;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.embed-notice-icon {
  font-size: 1.25rem;
  line-height: 1;
  flex-shrink: 0;
  margin-top: 2px;
}

.embed-notice-content {
  flex: 1;
}

.embed-notice-title {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--txt);
  margin-bottom: 4px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.embed-notice-desc {
  font-size: 0.82rem;
  color: var(--txt2);
  line-height: 1.5;
}

.embed-notice-desc a {
  color: var(--cyan);
  text-decoration: underline;
  font-weight: 600;
}

.embed-container {
  position: relative;
  width: 100%;
  min-height: 850px;
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--r);
  overflow: hidden;
  box-shadow: var(--card-shadow);
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.embed-container:hover {
  border-color: var(--border2);
}

.embed-iframe {
  display: block;
  width: 100%;
  height: 920px;
  min-height: 850px;
  border: none;
  background: #ffffff;
  border-radius: calc(var(--r) - 2px);
}

.embed-loader {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  min-height: 850px;
  background: var(--card-bg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  z-index: 10;
  transition: opacity 0.35s ease, visibility 0.35s ease;
}

.embed-loader.loaded {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.embed-spinner {
  width: 44px;
  height: 44px;
  border: 3px solid rgba(66, 195, 254, 0.2);
  border-top-color: var(--cyan);
  border-radius: 50%;
  animation: spin 0.85s cubic-bezier(0.4, 0, 0.2, 1) infinite;
}

.embed-loader-text {
  font-family: var(--font-display);
  font-size: 0.88rem;
  letter-spacing: 0.05em;
  color: var(--txt);
  text-transform: uppercase;
}

.embed-loader-sub {
  font-size: 0.78rem;
  color: var(--txt2);
}

/* Modal redirect notice */
.modal-embed-callout {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  background: rgba(66, 195, 254, 0.08);
  border: 1px solid rgba(66, 195, 254, 0.3);
  border-radius: var(--r2);
  padding: 12px 14px;
  margin-bottom: 16px;
}

.modal-embed-callout-text {
  font-size: 0.82rem;
  color: var(--txt);
  line-height: 1.4;
}

.modal-embed-callout-btn {
  white-space: nowrap;
  padding: 6px 12px;
  font-size: 0.8rem;
  font-weight: 700;
  border-radius: var(--r2);
  background: var(--cyan);
  color: #000000;
  border: none;
  cursor: pointer;
  transition: all 0.2s ease;
}

.modal-embed-callout-btn:hover {
  background: #ffffff;
  transform: scale(1.03);
}

@media (max-width: 768px) {
  .embed-top-bar {
    flex-direction: column;
    align-items: stretch;
  }
  .embed-toolbar {
    width: 100%;
  }
  .embed-toolbar-btn {
    flex: 1;
    justify-content: center;
  }
  .embed-iframe {
    height: 980px;
  }
}