:root {
  --teal-950: #08282b;
  --teal-900: #0d3a3d;
  --teal-800: #114a4d;
  --teal-700: #166063;
  --teal-600: #1d7a7d;
  --teal-500: #2a9a9d;
  --teal-400: #3fb8bb;
  --teal-300: #6ed7d9;

  --cyan-glow: #5fe3ff;
  --cyan-bright: #00d4ff;
  --magenta: #ff5fb8;
  --magenta-soft: #ffb3dd;
  --violet: #a48bff;
  --gold: #ffd166;
  --mint: #7ef7c9;

  --ink: #0a2628;
  --white: #ffffff;
  --white-soft: rgba(255, 255, 255, 0.92);
  --white-dim: rgba(255, 255, 255, 0.72);
  --white-faint: rgba(255, 255, 255, 0.16);
  --white-ghost: rgba(255, 255, 255, 0.06);
  --glass: rgba(255, 255, 255, 0.07);
  --glass-strong: rgba(255, 255, 255, 0.13);

  --shadow-lg: 0 24px 70px rgba(0, 0, 0, 0.35);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.22);
  --shadow-glow: 0 0 40px rgba(95, 227, 255, 0.25);

  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-pill: 999px;

  --ease-out: cubic-bezier(0.2, 0.8, 0.2, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  min-height: 100vh;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: var(--white);
  background: #0a3033;
  overflow-x: hidden;
}

body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  position: relative;
}

/* === Animated mesh background === */
body::before {
  content: '';
  position: fixed;
  inset: -10%;
  z-index: 0;
  background:
    radial-gradient(50% 40% at 20% 15%, rgba(95, 227, 255, 0.45) 0%, transparent 60%),
    radial-gradient(45% 45% at 85% 25%, rgba(164, 139, 255, 0.32) 0%, transparent 60%),
    radial-gradient(55% 50% at 15% 90%, rgba(126, 247, 201, 0.28) 0%, transparent 60%),
    radial-gradient(55% 55% at 90% 95%, rgba(255, 95, 184, 0.25) 0%, transparent 60%),
    radial-gradient(70% 70% at 50% 50%, rgba(63, 184, 187, 0.35) 0%, transparent 70%),
    linear-gradient(135deg, #08282b 0%, #0d3a3d 50%, #114a4d 100%);
  animation: meshDrift 28s ease-in-out infinite;
  filter: saturate(115%);
}

/* Subtle grain so the gradient doesn't band */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0.6 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  opacity: 0.05;
  mix-blend-mode: overlay;
}

@keyframes meshDrift {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(2%, -2%) scale(1.04); }
  66% { transform: translate(-2%, 2%) scale(1.02); }
}

/* === Floating orbs === */
.bg-orbs {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}
.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  mix-blend-mode: screen;
}
.orb-1 {
  width: 520px; height: 520px;
  background: radial-gradient(circle, var(--cyan-glow), transparent 70%);
  top: -180px; left: -120px;
  opacity: 0.55;
  animation: floatA 18s ease-in-out infinite;
}
.orb-2 {
  width: 640px; height: 640px;
  background: radial-gradient(circle, var(--violet), transparent 70%);
  bottom: -220px; right: -160px;
  opacity: 0.4;
  animation: floatB 22s ease-in-out infinite;
}
.orb-3 {
  width: 360px; height: 360px;
  background: radial-gradient(circle, var(--magenta-soft), transparent 70%);
  top: 35%; left: 55%;
  opacity: 0.22;
  animation: floatC 26s ease-in-out infinite;
}

@keyframes floatA {
  0%, 100% { transform: translate(0, 0); }
  50% { transform: translate(60px, 40px); }
}
@keyframes floatB {
  0%, 100% { transform: translate(0, 0); }
  50% { transform: translate(-70px, -30px); }
}
@keyframes floatC {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(40px, -60px) scale(1.15); }
}

/* === Top bar === */
.topbar {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 22px 40px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  cursor: pointer;
  user-select: none;
  transition: transform 0.3s var(--ease-out);
}
.brand:hover { transform: translateX(2px); }

.brand-mark {
  width: 42px;
  height: 42px;
  display: block;
  object-fit: contain;
  position: relative;
  animation: brandBob 4.5s ease-in-out infinite;
  filter: drop-shadow(0 4px 14px rgba(95, 227, 255, 0.45));
  transition: filter 0.4s var(--ease-out);
}
.brand:hover .brand-mark {
  filter: drop-shadow(0 4px 18px rgba(95, 227, 255, 0.7)) drop-shadow(0 0 12px rgba(164, 139, 255, 0.5));
}

@keyframes brandBob {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-3px); }
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}
.brand-name {
  font-weight: 700;
  font-size: 16px;
  letter-spacing: -0.01em;
}
.brand-sub {
  font-size: 12px;
  color: var(--white-dim);
  font-weight: 500;
}

.topbar-right {
  display: flex;
  align-items: center;
  gap: 12px;
}
.role-badge {
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  background: var(--glass-strong);
  border: 1px solid var(--white-faint);
  font-size: 13px;
  font-weight: 600;
  backdrop-filter: blur(10px);
  animation: badgePop 0.5s var(--ease-spring);
}
.role-badge.teacher {
  background: rgba(95, 227, 255, 0.2);
  border-color: rgba(95, 227, 255, 0.45);
  box-shadow: 0 0 18px rgba(95, 227, 255, 0.25);
}
.role-badge.coordinator {
  background: rgba(164, 139, 255, 0.22);
  border-color: rgba(164, 139, 255, 0.5);
  box-shadow: 0 0 18px rgba(164, 139, 255, 0.3);
}
.role-badge.student {
  background: rgba(255, 95, 184, 0.2);
  border-color: rgba(255, 95, 184, 0.5);
  box-shadow: 0 0 18px rgba(255, 95, 184, 0.28);
}

@keyframes badgePop {
  0% { opacity: 0; transform: scale(0.7); }
  100% { opacity: 1; transform: scale(1); }
}

/* === Main === */
main {
  position: relative;
  z-index: 1;
  flex: 1;
  padding: 20px 40px 60px;
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
}

/* === Role screen === */
.role-screen {
  text-align: center;
  padding: 24px 20px 20px;
}

.role-hero {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 28px;
  margin: 0 auto 56px;
  max-width: 880px;
  text-align: left;
}
.role-hero-text {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding-top: 28px;
}
.role-hero-text h1 { margin-bottom: 12px; }
.role-hero-text .lede { margin: 0; max-width: 460px; }

.mascot-wrap {
  position: relative;
  width: 200px;
  height: 200px;
  flex-shrink: 0;
  display: grid;
  place-items: center;
  animation: mascotEnter 0.9s var(--ease-spring) both;
}
.mascot {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 100%;
  object-fit: contain;
  filter:
    drop-shadow(0 12px 30px rgba(0, 0, 0, 0.35))
    drop-shadow(0 0 24px rgba(95, 227, 255, 0.45));
  animation: mascotBob 3.6s ease-in-out infinite;
  transform-origin: 50% 100%;
}
.mascot-glow {
  position: absolute;
  inset: 12% 8% 0 8%;
  background: radial-gradient(closest-side, rgba(95, 227, 255, 0.55), transparent 70%);
  filter: blur(22px);
  z-index: 0;
  animation: glowPulse 3.6s ease-in-out infinite;
}
.mascot-wrap::after {
  content: '';
  position: absolute;
  left: 50%;
  bottom: 6px;
  width: 110px;
  height: 14px;
  background: radial-gradient(closest-side, rgba(95, 227, 255, 0.4), transparent 70%);
  transform: translateX(-50%);
  filter: blur(6px);
  z-index: 0;
  animation: shadowPulse 3.6s ease-in-out infinite;
}

@keyframes mascotEnter {
  0% { opacity: 0; transform: translateY(20px) scale(0.85); }
  100% { opacity: 1; transform: translateY(0) scale(1); }
}
@keyframes mascotBob {
  0%, 100% { transform: translateY(0) rotate(-1.5deg); }
  50% { transform: translateY(-10px) rotate(1.5deg); }
}
@keyframes glowPulse {
  0%, 100% { opacity: 0.55; transform: scale(1); }
  50% { opacity: 0.85; transform: scale(1.08); }
}
@keyframes shadowPulse {
  0%, 100% { transform: translateX(-50%) scale(1); opacity: 0.55; }
  50% { transform: translateX(-50%) scale(0.78); opacity: 0.3; }
}
.role-screen h1 {
  font-size: 64px;
  font-weight: 800;
  letter-spacing: -0.035em;
  margin: 0 0 18px;
  line-height: 1.0;
  background: linear-gradient(180deg, #ffffff 0%, #c8f4ff 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: slideDownFade 0.7s var(--ease-out);
}
.role-screen h1 .accent {
  background: linear-gradient(135deg, var(--cyan-glow), var(--mint));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  position: relative;
  display: inline-block;
}
.role-screen h1 .accent::after {
  content: '';
  position: absolute;
  inset: -8px -4px;
  background: radial-gradient(closest-side, rgba(95, 227, 255, 0.4), transparent 70%);
  z-index: -1;
  filter: blur(14px);
  animation: pulseGlow 3s ease-in-out infinite;
}
@keyframes pulseGlow {
  0%, 100% { opacity: 0.4; }
  50% { opacity: 0.9; }
}

.role-screen .lede {
  font-size: 19px;
  color: var(--white-dim);
  max-width: 580px;
  margin: 0 auto 60px;
  line-height: 1.55;
  animation: slideUpFade 0.7s var(--ease-out) 0.1s both;
}

.role-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  max-width: 1040px;
  margin: 0 auto;
}
.role-card {
  --card-accent: var(--cyan-glow);
  --card-accent-rgb: 95, 227, 255;
  background:
    linear-gradient(155deg, rgba(255, 255, 255, 0.09), rgba(255, 255, 255, 0.03));
  border: 1px solid var(--white-faint);
  border-radius: var(--radius-lg);
  padding: 36px 28px 30px;
  cursor: pointer;
  text-align: left;
  transition:
    transform 0.4s var(--ease-out),
    border-color 0.3s var(--ease-out),
    box-shadow 0.4s var(--ease-out);
  backdrop-filter: blur(16px);
  position: relative;
  overflow: hidden;
  animation: cardEnter 0.7s var(--ease-spring) both;
}
.role-card:nth-child(1) { animation-delay: 0.15s; }
.role-card:nth-child(2) { animation-delay: 0.25s; }
.role-card:nth-child(3) { animation-delay: 0.35s; }

.role-card[data-role="teacher"] {
  --card-accent: var(--cyan-glow);
  --card-accent-rgb: 95, 227, 255;
}
.role-card[data-role="coordinator"] {
  --card-accent: var(--violet);
  --card-accent-rgb: 164, 139, 255;
}
.role-card[data-role="student"] {
  --card-accent: var(--magenta);
  --card-accent-rgb: 255, 95, 184;
}

/* Gradient border on hover */
.role-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius-lg);
  padding: 1.5px;
  background: linear-gradient(135deg, rgba(var(--card-accent-rgb), 0.7), transparent 60%);
  -webkit-mask:
    linear-gradient(#000 0 0) content-box,
    linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity 0.35s var(--ease-out);
  pointer-events: none;
}

/* Mouse-tracking shine */
.role-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(
    340px circle at var(--mx, 50%) var(--my, 50%),
    rgba(var(--card-accent-rgb), 0.18),
    transparent 50%
  );
  opacity: 0;
  transition: opacity 0.3s var(--ease-out);
  pointer-events: none;
}

.role-card:hover {
  transform: translateY(-8px);
  border-color: rgba(var(--card-accent-rgb), 0.5);
  box-shadow:
    0 24px 60px rgba(0, 0, 0, 0.32),
    0 0 0 1px rgba(var(--card-accent-rgb), 0.08),
    0 0 40px rgba(var(--card-accent-rgb), 0.2);
}
.role-card:hover::before { opacity: 1; }
.role-card:hover::after { opacity: 1; }

.role-card .icon {
  font-size: 34px;
  margin-bottom: 22px;
  display: inline-flex;
  width: 64px;
  height: 64px;
  align-items: center;
  justify-content: center;
  background:
    radial-gradient(circle at 30% 30%, rgba(var(--card-accent-rgb), 0.35), rgba(var(--card-accent-rgb), 0.1));
  border: 1px solid rgba(var(--card-accent-rgb), 0.3);
  border-radius: 18px;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.2),
    0 4px 18px rgba(var(--card-accent-rgb), 0.15);
  transition: transform 0.45s var(--ease-spring);
}
.role-card:hover .icon {
  transform: translateY(-3px) rotate(-4deg) scale(1.06);
}

.role-card h3 {
  font-size: 23px;
  font-weight: 700;
  margin: 0 0 8px;
  letter-spacing: -0.015em;
}
.role-card p {
  font-size: 14px;
  color: var(--white-dim);
  margin: 0 0 22px;
  line-height: 1.55;
  min-height: 44px;
}
.role-card .arrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  color: var(--card-accent);
  transition: gap 0.3s var(--ease-out);
}
.role-card:hover .arrow { gap: 12px; }

.role-card .lock {
  position: absolute;
  top: 20px;
  right: 20px;
  font-size: 12px;
  font-weight: 600;
  color: rgba(var(--card-accent-rgb), 0.9);
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 4px 10px;
  background: rgba(var(--card-accent-rgb), 0.12);
  border: 1px solid rgba(var(--card-accent-rgb), 0.25);
  border-radius: var(--radius-pill);
  letter-spacing: 0.02em;
}

.help-contact {
  text-align: center;
  margin: 48px auto 0;
  font-size: 14px;
  color: var(--white-dim);
  animation: slideUpFade 0.7s var(--ease-out) 0.5s both;
}
.help-contact a {
  color: var(--cyan-glow);
  text-decoration: none;
  font-weight: 600;
  position: relative;
  transition: color 0.25s var(--ease-out);
}
.help-contact a::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  height: 1px;
  background: linear-gradient(90deg, var(--cyan-glow), var(--violet));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s var(--ease-out);
}
.help-contact a:hover { color: var(--white); }
.help-contact a:hover::after { transform: scaleX(1); }

@keyframes slideDownFade {
  from { opacity: 0; transform: translateY(-14px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes slideUpFade {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes cardEnter {
  from { opacity: 0; transform: translateY(28px) scale(0.96); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

/* === Help view === */
.help-view { animation: viewFade 0.5s var(--ease-out); }

.help-header {
  text-align: center;
  padding: 26px 0 38px;
}
.help-header h1 {
  font-size: 46px;
  font-weight: 800;
  letter-spacing: -0.028em;
  margin: 0 0 12px;
  background: linear-gradient(180deg, #ffffff 0%, #c8f4ff 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.help-header p {
  font-size: 17px;
  color: var(--white-dim);
  margin: 0;
}

.search-wrap {
  max-width: 660px;
  margin: 0 auto 48px;
  position: relative;
}
.search-wrap::before {
  content: '';
  position: absolute;
  inset: -2px;
  border-radius: var(--radius-pill);
  background: linear-gradient(90deg, var(--cyan-glow), var(--violet), var(--magenta), var(--cyan-glow));
  background-size: 300% 100%;
  opacity: 0;
  filter: blur(10px);
  transition: opacity 0.4s var(--ease-out);
  pointer-events: none;
  animation: borderShift 6s linear infinite;
}
.search-wrap:focus-within::before { opacity: 0.5; }

.search-input {
  position: relative;
  width: 100%;
  padding: 18px 22px 18px 56px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--white-faint);
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(14px);
  color: var(--white);
  font-size: 16px;
  font-family: inherit;
  outline: none;
  transition: border-color 0.3s, background 0.3s;
  z-index: 1;
}
.search-input::placeholder { color: var(--white-dim); }
.search-input:focus {
  border-color: rgba(95, 227, 255, 0.6);
  background: rgba(255, 255, 255, 0.16);
}
.search-icon {
  position: absolute;
  left: 22px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--white-dim);
  pointer-events: none;
  z-index: 2;
  transition: color 0.3s;
}
.search-wrap:focus-within .search-icon { color: var(--cyan-glow); }

@keyframes borderShift {
  0% { background-position: 0% 50%; }
  100% { background-position: 300% 50%; }
}

.articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(290px, 1fr));
  gap: 18px;
}
.article-card {
  background:
    linear-gradient(155deg, rgba(255, 255, 255, 0.085), rgba(255, 255, 255, 0.025));
  border: 1px solid var(--white-faint);
  border-radius: var(--radius-md);
  padding: 22px 22px 22px;
  cursor: pointer;
  transition:
    transform 0.35s var(--ease-out),
    border-color 0.3s var(--ease-out),
    box-shadow 0.35s var(--ease-out);
  backdrop-filter: blur(12px);
  position: relative;
  overflow: hidden;
  animation: cardEnter 0.55s var(--ease-spring) both;
}
.article-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(
    260px circle at var(--mx, 50%) var(--my, 50%),
    rgba(95, 227, 255, 0.16),
    transparent 55%
  );
  opacity: 0;
  transition: opacity 0.3s var(--ease-out);
  pointer-events: none;
}
.article-card:hover {
  transform: translateY(-4px);
  border-color: rgba(95, 227, 255, 0.4);
  box-shadow:
    0 16px 40px rgba(0, 0, 0, 0.28),
    0 0 30px rgba(95, 227, 255, 0.15);
}
.article-card:hover::after { opacity: 1; }

.article-card .tag {
  display: inline-block;
  font-size: 10.5px;
  font-weight: 700;
  padding: 4px 11px;
  border-radius: var(--radius-pill);
  background: linear-gradient(135deg, rgba(95, 227, 255, 0.22), rgba(164, 139, 255, 0.18));
  border: 1px solid rgba(95, 227, 255, 0.3);
  color: var(--cyan-glow);
  margin-bottom: 14px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.article-card h3 {
  font-size: 17px;
  font-weight: 600;
  margin: 0 0 8px;
  line-height: 1.35;
  letter-spacing: -0.01em;
}
.article-card p {
  font-size: 13px;
  color: var(--white-dim);
  margin: 0;
  line-height: 1.55;
}
.article-card .chev {
  position: absolute;
  bottom: 20px;
  right: 18px;
  opacity: 0;
  transform: translateX(-4px);
  transition: opacity 0.3s, transform 0.3s var(--ease-out);
  color: var(--cyan-glow);
}
.article-card:hover .chev {
  opacity: 1;
  transform: translateX(0);
}

.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--white-dim);
  animation: viewFade 0.4s var(--ease-out);
}
.empty-state .big-icon {
  font-size: 44px;
  margin-bottom: 14px;
  filter: grayscale(0.2);
}
.empty-state .empty-mascot {
  width: 160px;
  height: 160px;
  object-fit: contain;
  margin-bottom: 18px;
  filter:
    drop-shadow(0 10px 26px rgba(0, 0, 0, 0.3))
    drop-shadow(0 0 22px rgba(95, 227, 255, 0.35));
  animation: mascotBob 4s ease-in-out infinite;
}

@keyframes viewFade {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* === Article view === */
.article-view { animation: viewFade 0.5s var(--ease-out); }

.back-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: var(--radius-pill);
  background: var(--glass);
  border: 1px solid var(--white-faint);
  color: var(--white);
  cursor: pointer;
  font-family: inherit;
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 26px;
  backdrop-filter: blur(10px);
  transition: background 0.25s, border-color 0.25s, transform 0.25s var(--ease-out), gap 0.25s var(--ease-out);
}
.back-btn:hover {
  background: var(--glass-strong);
  border-color: rgba(255, 255, 255, 0.32);
  gap: 12px;
}
.back-btn:active { transform: scale(0.97); }

.article-head { margin-bottom: 28px; }
.article-head .tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  padding: 5px 12px;
  border-radius: var(--radius-pill);
  background: linear-gradient(135deg, rgba(95, 227, 255, 0.22), rgba(164, 139, 255, 0.18));
  border: 1px solid rgba(95, 227, 255, 0.3);
  color: var(--cyan-glow);
  margin-bottom: 16px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.article-head h1 {
  font-size: 40px;
  font-weight: 800;
  letter-spacing: -0.028em;
  margin: 0 0 12px;
  line-height: 1.1;
  background: linear-gradient(180deg, #ffffff 0%, #d3f4ff 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.article-head .summary {
  font-size: 17px;
  color: var(--white-dim);
  margin: 0;
  max-width: 760px;
  line-height: 1.55;
}

.iframe-shell {
  background: var(--glass);
  border: 1px solid var(--white-faint);
  border-radius: var(--radius-lg);
  overflow: hidden;
  height: 75vh;
  min-height: 560px;
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-lg), 0 0 50px rgba(95, 227, 255, 0.12);
  position: relative;
}
.iframe-shell::before {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(95, 227, 255, 0.5), transparent 50%, rgba(164, 139, 255, 0.35));
  -webkit-mask:
    linear-gradient(#000 0 0) content-box,
    linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  padding: 1px;
  pointer-events: none;
}
.iframe-shell iframe {
  display: block;
  width: 100%;
  height: 100%;
  border: 0;
  background: white;
  position: relative;
  z-index: 1;
}

/* === Buttons === */
.primary-btn {
  background: linear-gradient(135deg, var(--cyan-glow), var(--teal-400) 60%, var(--mint));
  background-size: 200% 100%;
  color: var(--ink);
  border: none;
  padding: 12px 26px;
  border-radius: var(--radius-pill);
  font-weight: 700;
  font-size: 14px;
  font-family: inherit;
  cursor: pointer;
  transition: transform 0.2s var(--ease-out), box-shadow 0.3s, background-position 0.5s var(--ease-out);
  box-shadow: 0 4px 18px rgba(95, 227, 255, 0.35);
  letter-spacing: 0.01em;
}
.primary-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 26px rgba(95, 227, 255, 0.5);
  background-position: 100% 0;
}
.primary-btn:active { transform: translateY(0); }

.ghost-btn {
  background: transparent;
  color: var(--white);
  border: 1px solid var(--white-faint);
  padding: 8px 16px;
  border-radius: var(--radius-pill);
  font-weight: 500;
  font-size: 13px;
  font-family: inherit;
  cursor: pointer;
  transition: background 0.25s, border-color 0.25s, transform 0.2s;
}
.ghost-btn:hover {
  background: var(--glass-strong);
  border-color: rgba(255, 255, 255, 0.3);
}
.ghost-btn:active { transform: scale(0.97); }

/* === Modal === */
.modal {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: grid;
  place-items: center;
  padding: 20px;
}
.modal.hidden { display: none; }
.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(5, 25, 27, 0.65);
  backdrop-filter: blur(10px);
  animation: fadeIn 0.25s var(--ease-out);
}
.modal-card {
  position: relative;
  background:
    linear-gradient(160deg, #1d5b5f 0%, #0f3a3d 100%);
  border: 1px solid var(--white-faint);
  border-radius: var(--radius-lg);
  padding: 34px;
  max-width: 440px;
  width: 100%;
  box-shadow:
    var(--shadow-lg),
    0 0 60px rgba(95, 227, 255, 0.15),
    inset 0 1px 0 rgba(255, 255, 255, 0.1);
  animation: modalPop 0.4s var(--ease-spring);
  overflow: hidden;
}
.modal-card::before {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(95, 227, 255, 0.5), transparent 60%);
  -webkit-mask:
    linear-gradient(#000 0 0) content-box,
    linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  padding: 1px;
  pointer-events: none;
}
.modal-card h2 {
  font-size: 25px;
  font-weight: 700;
  margin: 0 0 8px;
  letter-spacing: -0.02em;
}
.modal-sub {
  font-size: 14px;
  color: var(--white-dim);
  margin: 0 0 22px;
  line-height: 1.5;
}
.pw-input {
  width: 100%;
  padding: 16px 20px;
  border-radius: 14px;
  border: 1px solid var(--white-faint);
  background: rgba(0, 0, 0, 0.28);
  color: var(--white);
  font-size: 20px;
  font-weight: 600;
  font-family: inherit;
  letter-spacing: 0.4em;
  text-align: center;
  outline: none;
  transition: border-color 0.25s, box-shadow 0.25s;
}
.pw-input:focus {
  border-color: rgba(95, 227, 255, 0.7);
  box-shadow: 0 0 0 4px rgba(95, 227, 255, 0.15);
}
.pw-error {
  margin-top: 12px;
  color: #ff9a9a;
  font-size: 13px;
  text-align: center;
  animation: shake 0.4s ease;
}
.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 24px;
}

@keyframes modalPop {
  0% { opacity: 0; transform: scale(0.9) translateY(8px); }
  100% { opacity: 1; transform: scale(1) translateY(0); }
}
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}
@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20%, 60% { transform: translateX(-6px); }
  40%, 80% { transform: translateX(6px); }
}

/* === Footer === */
.footer {
  position: relative;
  z-index: 2;
  display: flex;
  justify-content: space-between;
  padding: 20px 40px;
  font-size: 13px;
  color: var(--white-dim);
}

/* === Utility === */
.hidden { display: none !important; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001s !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.1s !important;
  }
}

@media (max-width: 760px) {
  .topbar { padding: 16px 20px; }
  main { padding: 12px 20px 40px; }
  .footer { padding: 16px 20px; }
  .role-hero {
    flex-direction: column;
    gap: 8px;
    text-align: center;
    margin-bottom: 40px;
  }
  .role-hero-text { align-items: center; padding-top: 0; }
  .role-hero-text .lede { max-width: none; }
  .mascot-wrap { width: 140px; height: 140px; }
  .role-screen h1 { font-size: 42px; }
  .role-screen .lede { font-size: 16px; margin-bottom: 36px; }
  .role-cards { grid-template-columns: 1fr; gap: 16px; }
  .help-header h1 { font-size: 32px; }
  .article-head h1 { font-size: 28px; }
  .iframe-shell { height: 70vh; min-height: 460px; }
}