/* ══════════════════════════════════════════════════════════════
   TICNES THIPI — "The Sovereign Architect" Design System
   Fonts: Plus Jakarta Sans (headlines) · Inter (body) · Space Grotesk (labels)
   ══════════════════════════════════════════════════════════════ */

/* ─── Design Tokens ─── */
:root {
  /* Surface Hierarchy */
  --surface:               #0f1414;
  --surface-dim:           #0f1414;
  --surface-lowest:        #0a0f0f;
  --surface-low:           #171c1c;
  --surface-container:     #1b2120;
  --surface-high:          #262b2b;
  --surface-highest:       #313636;
  --surface-bright:        #353a3a;
  --surface-variant:       #313636;

  /* On-surface */
  --on-surface:            #dfe3e3;
  --on-surface-variant:    #bfc8c8;

  /* Primary — Digital Blue */
  --primary:               #adc7ff;
  --primary-container:     #00428e;
  --on-primary:            #002e68;
  --primary-fixed:         #d8e2ff;
  --primary-fixed-dim:     #adc7ff;

  /* Secondary — Deep Teal */
  --secondary:             #94d1d1;
  --secondary-container:   #095252;
  --on-secondary:          #003737;

  /* Tertiary — Cyber Lime */
  --tertiary:              #abd600;
  --tertiary-container:    #3a4a00;
  --on-tertiary:           #283500;
  --tertiary-fixed:        #c3f400;
  --tertiary-fixed-dim:    #abd600;

  /* Outline */
  --outline:               #899392;
  --outline-variant:       #3f4848;

  /* Background */
  --background:            #0f1414;
  --on-background:         #dfe3e3;

  /* Semantic */
  --error:                 #ffb4ab;
  --on-error:              #690005;

  /* Typography */
  --font-headline:         'Plus Jakarta Sans', sans-serif;
  --font-body:             'Inter', sans-serif;
  --font-label:            'Space Grotesk', sans-serif;

  /* Spacing scale ×3 */
  --space-1:   0.25rem;
  --space-2:   0.5rem;
  --space-3:   0.75rem;
  --space-4:   1rem;
  --space-5:   1.25rem;
  --space-6:   1.5rem;
  --space-8:   2rem;
  --space-10:  2.5rem;
  --space-12:  3rem;
  --space-16:  4rem;
  --space-20:  5rem;
  --space-24:  6rem;
  --space-32:  8rem;

  /* Radii */
  --radius-sm:  0.375rem;
  --radius-md:  0.5rem;
  --radius-lg:  0.75rem;
  --radius-xl:  1.25rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;

  /* Glow colours */
  --glow-lime:  rgba(171, 214, 0, 0.15);
  --glow-blue:  rgba(173, 199, 255, 0.08);
  --glow-teal:  rgba(148, 209, 209, 0.10);

  /* Transitions */
  --ease-out: cubic-bezier(0.4, 0, 0.2, 1);
}

/* ─── Reset & Base ─── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; font-size: 16px; }

body {
  background: var(--background);
  color: var(--on-surface);
  font-family: var(--font-body);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }

/* Accessible hide */
.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}

/* ─── Container ─── */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-6);
}

/* ─── Section Spacing ─── */
.section { padding: var(--space-24) 0; }

/* ═══════════════════════════════════
   TYPOGRAPHY
   ═══════════════════════════════════ */
.gradient-text {
  background: linear-gradient(135deg, var(--tertiary-fixed) 0%, var(--secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-tag {
  font-family: var(--font-label);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--secondary);
  display: block;
  margin-bottom: var(--space-4);
}

.section-title {
  font-family: var(--font-headline);
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  color: var(--on-surface);
  margin-bottom: var(--space-6);
}

.section-body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--on-surface-variant);
  max-width: 52ch;
}

.section-intro { margin-bottom: var(--space-12); }

.section-intro--split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-8);
  align-items: start;
  margin-bottom: var(--space-12);
}

.section-intro--split .section-body { max-width: unset; }

/* ═══════════════════════════════════
   CHIPS
   ═══════════════════════════════════ */
.chip {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-label);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.3rem 0.75rem;
  border-radius: var(--radius-full);
  background: var(--surface-high);
  border: 1px solid rgba(63, 72, 72, 0.15);
  color: var(--on-surface-variant);
  white-space: nowrap;
}

.chip-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--tertiary);
  animation: pulse 2s ease-in-out infinite;
}

.chip--teal  { background: rgba(9, 82, 82, 0.5);  color: var(--secondary); }
.chip--blue  { background: rgba(0, 66, 142, 0.4); color: var(--primary);   }
.chip--lime  { background: rgba(58, 74, 0, 0.6);  color: var(--tertiary);  }

/* ═══════════════════════════════════
   BUTTONS
   ═══════════════════════════════════ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-label);
  font-weight: 600;
  letter-spacing: 0.04em;
  border-radius: var(--radius-lg);
  transition: transform 0.2s var(--ease-out), box-shadow 0.2s var(--ease-out), background 0.2s;
  cursor: pointer;
  white-space: nowrap;
  text-decoration: none;
}

.btn:active { transform: scale(0.96); }

/* Primary */
.btn-primary {
  padding: 0.875rem 2rem;
  background: linear-gradient(135deg, var(--primary-fixed-dim) 0%, var(--primary-container) 100%);
  color: var(--on-surface);
  font-size: 0.9rem;
  box-shadow: 0 0 0 0.5px var(--primary-fixed) inset, 0 8px 24px rgba(173,199,255,0.12);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 0 0.5px var(--primary-fixed) inset, 0 16px 40px rgba(173,199,255,0.2);
}

/* Primary small (nav) */
.btn-primary-sm {
  padding: 0.5rem 1.25rem;
  background: linear-gradient(135deg, var(--primary-fixed-dim) 0%, var(--primary-container) 100%);
  color: var(--on-surface);
  font-size: 0.78rem;
  border-radius: var(--radius-md);
}

.btn-primary-sm:hover { opacity: 0.9; }

/* Ghost */
.btn-ghost {
  padding: 0.875rem 2rem;
  border: 1px solid rgba(137,147,146,0.2);
  color: var(--on-surface-variant);
  font-size: 0.9rem;
  background: transparent;
}

.btn-ghost:hover {
  background: var(--surface-high);
  border-color: rgba(137,147,146,0.4);
  color: var(--on-surface);
}

/* Tertiary — Cyber Lime "execute" button */
.btn-tertiary {
  padding: 0.875rem 2rem;
  background: var(--tertiary);
  color: var(--on-tertiary);
  font-size: 0.9rem;
  box-shadow: 0 0 32px var(--glow-lime);
}

.btn-tertiary:hover {
  transform: translateY(-2px);
  background: var(--tertiary-fixed);
  box-shadow: 0 0 48px rgba(171,214,0,0.3);
}

/* ═══════════════════════════════════
   NAVBAR
   ═══════════════════════════════════ */
.nav-bar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 9999;
  background: rgba(15, 20, 20, 0.80);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(63, 72, 72, 0.15);
  transition: background 0.3s;
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--space-4) var(--space-6);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
}

.logo-mark {
  width: 32px; height: 32px;
  background: linear-gradient(135deg, var(--tertiary) 0%, var(--secondary) 100%);
  border-radius: var(--radius-md);
  display: grid;
  place-items: center;
  font-family: var(--font-headline);
  font-weight: 800;
  font-size: 1rem;
  color: var(--on-tertiary);
}

.logo-text {
  font-family: var(--font-headline);
  font-weight: 700;
  font-size: 1rem;
  color: var(--on-surface);
  letter-spacing: -0.01em;
}

.logo-accent { color: var(--tertiary); }

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.nav-link {
  font-family: var(--font-label);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--on-surface-variant);
  transition: color 0.2s;
  text-decoration: none;
}

.nav-link:hover { color: var(--on-surface); }

.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-2);
}

.nav-hamburger span {
  display: block;
  width: 22px; height: 2px;
  background: var(--on-surface-variant);
  border-radius: 2px;
  transition: all 0.3s;
}

.nav-hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-hamburger.open span:nth-child(2) { opacity: 0; }
.nav-hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.nav-mobile {
  display: none;
  padding: var(--space-4) var(--space-6) var(--space-6);
  background: var(--surface-container);
}

.nav-mobile ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.nav-mobile.active { display: block; }

/* ═══════════════════════════════════
   HERO
   ═══════════════════════════════════ */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding: calc(80px + var(--space-20)) 0 var(--space-20);
  overflow: hidden;
}

/* Ambient glows */
.hero-glow-1 {
  position: absolute;
  top: 10%; right: -10%;
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(173,199,255,0.06) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.hero-glow-2 {
  position: absolute;
  bottom: 5%; left: -5%;
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(171,214,0,0.05) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

/* Grid texture */
.hero-bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(63,72,72,0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(63,72,72,0.07) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
  mask-image: radial-gradient(ellipse at 50% 50%, black 40%, transparent 80%);
}

.hero-inner {
  position: relative;
  z-index: 1;
}

.hero-label {
  margin-bottom: var(--space-8);
}

.hero-title {
  font-family: var(--font-headline);
  font-size: clamp(2.75rem, 7vw, 5.5rem);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.04em;
  color: var(--on-surface);
  margin-bottom: var(--space-6);
  max-width: 14ch;
}

.hero-sub {
  font-family: var(--font-body);
  font-size: clamp(1rem, 1.5vw, 1.2rem);
  line-height: 1.65;
  color: var(--on-surface-variant);
  max-width: 52ch;
  margin-bottom: var(--space-10);
}

.hero-cta {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
  margin-bottom: var(--space-16);
}

/* Hero stats bento row */
.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-4);
}

.stat-card {
  background: var(--surface-container);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  transition: background 0.25s;
}

.stat-card:hover { background: var(--surface-high); }

.stat-card--accent {
  background: rgba(58, 74, 0, 0.4);
  border: 1px solid rgba(171, 214, 0, 0.12);
  box-shadow: 0 0 24px var(--glow-lime);
}

.stat-val {
  font-family: var(--font-headline);
  font-size: 2.25rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  color: var(--on-surface);
  line-height: 1;
}

.stat-val--accent { color: var(--tertiary); }

.stat-label {
  font-family: var(--font-label);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--on-surface-variant);
  text-transform: uppercase;
}

/* ═══════════════════════════════════
   PROGRAM — BENTO GRID
   ═══════════════════════════════════ */
.program { background: var(--surface-low); }

.bento-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: auto auto;
  gap: var(--space-4);
}

.bento-card {
  background: var(--surface-container);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  transition: background 0.25s, transform 0.25s var(--ease-out);
  position: relative;
  overflow: hidden;
}

.bento-card:hover {
  background: var(--surface-high);
  transform: translateY(-3px);
}

.bento-card--large {
  grid-column: span 2;
}

.bento-card--accent {
  background: rgba(0, 66, 142, 0.3);
  border: 1px solid rgba(173, 199, 255, 0.1);
}

.bento-card--glass {
  background: rgba(49, 54, 54, 0.6);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(63,72,72, 0.2);
}

.bento-icon {
  font-size: 2rem;
  line-height: 1;
}

.bento-title {
  font-family: var(--font-headline);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--on-surface);
  letter-spacing: -0.02em;
}

.bento-body {
  font-family: var(--font-body);
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--on-surface-variant);
  flex: 1;
}

.bento-body strong { color: var(--primary); }

.bento-badge {
  align-self: flex-start;
  font-family: var(--font-label);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-full);
  background: var(--surface-highest);
  color: var(--on-surface-variant);
}

.bento-badge--lime {
  background: rgba(58, 74, 0, 0.8);
  color: var(--tertiary);
}

/* ═══════════════════════════════════
   INTERNS
   ═══════════════════════════════════ */
.interns-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
}

/* ── Photo avatar (real intern photos from Firebase Storage) ── */
.intern-avatar-photo {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  overflow: hidden;
  flex-shrink: 0;
  background: linear-gradient(135deg, var(--secondary-container), var(--primary-container));
  display: grid;
  place-items: center;
  border: 2px solid rgba(255,255,255,0.08);
  transition: border-color 0.3s, transform 0.3s;
}

.intern-card:hover .intern-avatar-photo {
  border-color: var(--secondary);
  transform: scale(1.05);
}

.intern-avatar-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  display: block;
}

.intern-avatar-photo .intern-initials {
  font-family: var(--font-headline);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--on-surface);
}

/* Color accent rings for photo avatars */
.intern-avatar-photo.intern-avatar--blue  { border-color: rgba(173,199,255,0.25); }
.intern-avatar-photo.intern-avatar--teal  { border-color: rgba(56,200,183,0.25); }
.intern-avatar-photo.intern-avatar--lime  { border-color: rgba(171,214,0,0.25); }

/* ── Intern syllabus (shared expand/collapse block) ── */
.intern-syllabus {
  font-size: 0.78rem;
  color: var(--on-surface-variant);
  line-height: 1.55;
  margin-top: var(--space-1);
}

.intern-syllabus__preview {
  margin: 0;
}

.intern-syllabus__preview strong {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--on-surface);
  letter-spacing: 0.01em;
}

.intern-syllabus__full {
  margin-top: var(--space-2);
  padding-left: 0;
}

.intern-syllabus__full p {
  margin: 0 0 var(--space-2);
  font-style: italic;
  color: var(--on-surface-variant);
}

.syllabus-list {
  list-style: none;
  padding: 0;
  margin: 0 0 var(--space-2);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.syllabus-list li {
  padding-left: 1rem;
  position: relative;
  color: var(--on-surface-variant);
}

.syllabus-list li::before {
  content: '›';
  position: absolute;
  left: 0;
  color: var(--secondary);
  font-weight: 700;
}

.syllabus-list li strong {
  color: var(--on-surface);
  font-weight: 600;
}

.syllabus-toggle {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-top: var(--space-1);
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  font-size: 0.75rem;
  font-family: var(--font-body);
  font-weight: 600;
  color: var(--secondary);
  transition: color 0.2s, opacity 0.2s;
  letter-spacing: 0.02em;
}

.syllabus-toggle:hover {
  color: var(--on-surface);
  opacity: 0.9;
}

.intern-card {
  background: var(--surface-container);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  transition: background 0.25s, transform 0.25s var(--ease-out);
  position: relative;
}

.intern-card:hover {
  background: var(--surface-high);
  transform: translateY(-2px);
}

.intern-card--featured {
  background: rgba(0, 66, 142, 0.25);
  border: 1px solid rgba(173, 199, 255, 0.1);
  box-shadow: 0 0 32px var(--glow-blue);
}

.intern-avatar {
  position: relative;
  width: 56px; height: 56px;
  flex-shrink: 0;
}

.avatar-initials {
  width: 56px; height: 56px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--secondary-container) 0%, var(--primary-container) 100%);
  display: grid;
  place-items: center;
  font-family: var(--font-headline);
  font-weight: 700;
  font-size: 1rem;
  color: var(--on-surface);
  position: relative;
  z-index: 1;
}

.avatar-ring {
  position: absolute;
  inset: -3px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--tertiary), var(--secondary));
  z-index: 0;
  opacity: 0;
  transition: opacity 0.3s;
}

.intern-card:hover .avatar-ring { opacity: 1; }

.intern-info {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  flex: 1;
}

.intern-name {
  font-family: var(--font-headline);
  font-size: 1rem;
  font-weight: 700;
  color: var(--on-surface);
  letter-spacing: -0.02em;
}

.intern-track { align-self: flex-start; }

.intern-bio {
  font-family: var(--font-body);
  font-size: 0.875rem;
  line-height: 1.55;
  color: var(--on-surface-variant);
}

.intern-cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-label);
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--secondary);
  letter-spacing: 0.04em;
  text-decoration: none;
  transition: gap 0.2s, color 0.2s;
  align-self: flex-start;
}

.intern-cta:hover {
  color: var(--tertiary);
  gap: var(--space-3);
}

/* ── Collapsed cards (hidden until "View All" is clicked) ── */
.intern-card--collapsed {
  display: none;
}

/* ── Disabled portfolio CTA (bottom performers) ── */
.intern-cta--disabled {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-label);
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--on-surface-variant);
  letter-spacing: 0.04em;
  align-self: flex-start;
  opacity: 0.35;
  pointer-events: none;
  cursor: not-allowed;
  user-select: none;
}

/* ── View All / Show Less toggle wrapper ── */
.interns-show-more {
  display: flex;
  justify-content: center;
  margin-top: var(--space-8);
}

.interns-toggle-btn {
  padding: 0.75rem 2rem;
  border: 1px solid rgba(137, 147, 146, 0.25);
  border-radius: var(--radius-full);
  font-family: var(--font-label);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--on-surface-variant);
  background: transparent;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s, color 0.2s, transform 0.2s var(--ease-out);
}

.interns-toggle-btn:hover {
  background: var(--surface-high);
  border-color: rgba(137, 147, 146, 0.5);
  color: var(--on-surface);
  transform: translateY(-1px);
}

.interns-toggle-btn:active {
  transform: scale(0.97);
}



/* ═══════════════════════════════════
   PROJECTS
   ═══════════════════════════════════ */
.projects { background: var(--surface-low); }

.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
  margin-top: var(--space-12);
}

.project-card {
  background: var(--surface-container);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
  transition: background 0.25s, transform 0.25s var(--ease-out);
}

.project-card:hover {
  background: var(--surface-high);
  transform: translateY(-3px);
}

.project-card--hero {
  background: var(--surface-container);
  box-shadow: 0 0 40px var(--glow-lime);
  border: 1px solid rgba(171, 214, 0, 0.08);
}

.project-meta {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.project-title {
  font-family: var(--font-headline);
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--on-surface);
  letter-spacing: -0.03em;
}

.project-desc {
  font-family: var(--font-body);
  font-size: 0.875rem;
  line-height: 1.65;
  color: var(--on-surface-variant);
  flex: 1;
}

.project-tech {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.tech-tag {
  font-family: var(--font-label);
  font-size: 0.66rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-sm);
  background: var(--surface-highest);
  color: var(--on-surface-variant);
}

/* ═══════════════════════════════════
   ALUMNI
   ═══════════════════════════════════ */
.alumni-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-4);
  margin-top: var(--space-8);
}

.alumni-card {
  background: var(--surface-container);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: var(--space-4);
  transition: background 0.25s, transform 0.25s var(--ease-out);
}

.alumni-card:hover {
  background: var(--surface-high);
  transform: translateY(-3px);
}

.alumni-avatar {
  width: 60px; height: 60px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary-container) 0%, var(--secondary-container) 100%);
  display: grid;
  place-items: center;
  font-family: var(--font-headline);
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--on-surface);
}

.alumni-info {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.alumni-name {
  font-family: var(--font-headline);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--on-surface);
}

.alumni-track {
  font-family: var(--font-label);
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--secondary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.alumni-role {
  font-family: var(--font-body);
  font-size: 0.82rem;
  color: var(--on-surface-variant);
  line-height: 1.4;
}

/* ═══════════════════════════════════
   APPLY CTA
   ═══════════════════════════════════ */
.apply { background: var(--surface-low); }

.apply-inner {
  position: relative;
  text-align: center;
  padding: var(--space-20) var(--space-8);
  background: var(--surface-container);
  border-radius: var(--radius-2xl);
  overflow: hidden;
}

.apply-glow {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 500px; height: 300px;
  background: radial-gradient(ellipse, rgba(171,214,0,0.08) 0%, transparent 70%);
  pointer-events: none;
}

.apply-title {
  font-family: var(--font-headline);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  color: var(--on-surface);
  margin-bottom: var(--space-4);
  position: relative;
  z-index: 1;
}

.apply-sub {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--on-surface-variant);
  max-width: 52ch;
  margin: 0 auto var(--space-10);
  position: relative;
  z-index: 1;
}

.apply-form {
  position: relative;
  z-index: 1;
  max-width: 480px;
  margin: 0 auto var(--space-8);
}

.apply-form-row {
  display: flex;
  gap: var(--space-3);
}

.apply-input {
  flex: 1;
  background: var(--surface-lowest);
  border: none;
  border-bottom: 2px solid var(--outline-variant);
  border-radius: var(--radius-md) var(--radius-md) 0 0;
  padding: 0.875rem 1rem;
  font-family: var(--font-body);
  font-size: 0.9rem;
  color: var(--on-surface);
  outline: none;
  transition: border-color 0.2s;
}

.apply-input::placeholder { color: var(--on-surface-variant); opacity: 0.6; }

.apply-input:focus {
  border-bottom-color: var(--secondary);
}

.apply-note {
  font-family: var(--font-label);
  font-size: 0.78rem;
  color: var(--tertiary);
  margin-top: var(--space-3);
  min-height: 1.2em;
}

.apply-tags {
  display: flex;
  gap: var(--space-2);
  justify-content: center;
  flex-wrap: wrap;
  position: relative;
  z-index: 1;
}

/* ═══════════════════════════════════
   FOOTER
   ═══════════════════════════════════ */
.footer {
  background: var(--surface-container);
  border-top: 1px solid rgba(63,72,72,0.15);
}

.footer-inner {
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: var(--space-12);
  align-items: center;
  padding-top: var(--space-10);
  padding-bottom: var(--space-10);
}

.footer-tagline {
  font-family: var(--font-body);
  font-size: 0.82rem;
  color: var(--on-surface-variant);
  margin-top: var(--space-2);
}

.footer-links {
  display: flex;
  gap: var(--space-6);
}

.footer-link {
  font-family: var(--font-label);
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--on-surface-variant);
  transition: color 0.2s;
  text-decoration: none;
}

.footer-link:hover { color: var(--on-surface); }

.footer-social {
  display: flex;
  gap: var(--space-4);
}

.social-link {
  width: 36px; height: 36px;
  display: grid;
  place-items: center;
  border-radius: var(--radius-md);
  background: var(--surface-high);
  color: var(--on-surface-variant);
  transition: background 0.2s, color 0.2s, transform 0.2s;
  text-decoration: none;
}

.social-link:hover {
  background: var(--surface-highest);
  color: var(--on-surface);
  transform: translateY(-2px);
}

.footer-bottom {
  border-top: 1px solid rgba(63,72,72,0.1);
  padding: var(--space-5) var(--space-6);
  text-align: center;
}

.footer-bottom p {
  font-family: var(--font-label);
  font-size: 0.75rem;
  color: var(--on-surface-variant);
  letter-spacing: 0.03em;
}

/* ═══════════════════════════════════
   ANIMATIONS
   ═══════════════════════════════════ */
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.6; transform: scale(0.85); }
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0);    }
}

/* Entrance animations */
.hero-label  { animation: fadeUp 0.6s var(--ease-out) 0.1s both; }
.hero-title  { animation: fadeUp 0.6s var(--ease-out) 0.2s both; }
.hero-sub    { animation: fadeUp 0.6s var(--ease-out) 0.3s both; }
.hero-cta    { animation: fadeUp 0.6s var(--ease-out) 0.4s both; }
.hero-stats  { animation: fadeUp 0.6s var(--ease-out) 0.5s both; }

/* Scroll-triggered fade-in via JS class */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s var(--ease-out), transform 0.6s var(--ease-out);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ═══════════════════════════════════
   RESPONSIVE — Tablet
   ═══════════════════════════════════ */
@media (max-width: 900px) {
  .nav-links { display: none; }
  .nav-hamburger { display: flex; }

  .hero-stats {
    grid-template-columns: repeat(2, 1fr);
  }

  .bento-grid {
    grid-template-columns: 1fr 1fr;
  }

  .bento-card--large { grid-column: span 2; }

  .section-intro--split {
    grid-template-columns: 1fr;
  }

  .interns-grid {
    grid-template-columns: 1fr;
  }

  .projects-grid {
    grid-template-columns: 1fr 1fr;
  }

  .alumni-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-inner {
    grid-template-columns: 1fr;
    gap: var(--space-8);
    text-align: center;
  }

  .footer-links { justify-content: center; flex-wrap: wrap; }
  .footer-social { justify-content: center; }
}

/* ═══════════════════════════════════
   RESPONSIVE — Mobile
   ═══════════════════════════════════ */
@media (max-width: 600px) {
  .container { padding: 0 var(--space-4); }

  .hero { padding-top: calc(72px + var(--space-12)); padding-bottom: var(--space-12); }
  .hero-title { font-size: 2.5rem; }

  .hero-cta { flex-direction: column; }
  .btn-primary, .btn-ghost { width: 100%; justify-content: center; }

  .hero-stats { grid-template-columns: 1fr 1fr; }

  .bento-grid {
    grid-template-columns: 1fr;
  }
  .bento-card--large { grid-column: span 1; }

  .projects-grid { grid-template-columns: 1fr; }

  .alumni-grid { grid-template-columns: 1fr 1fr; }

  .apply-form-row { flex-direction: column; }
  .btn-tertiary { width: 100%; justify-content: center; }

  .apply-inner { padding: var(--space-12) var(--space-6); }

  .lang-switcher { display: none; }
  .lang-switcher--mobile { display: flex; }
}

/* ═══════════════════════════════════════════════════════
   LANGUAGE SWITCHER
   ════════════════════════════════════════════════════ */
.lang-switcher {
  display: flex;
  align-items: center;
  gap: 2px;
  margin-left: var(--space-4);
}

.lang-switcher--mobile {
  margin: var(--space-4) 0;
  justify-content: center;
}

.lang-divider {
  font-family: var(--font-label);
  font-size: 0.65rem;
  color: var(--outline);
  padding: 0 2px;
  user-select: none;
}

.lang-btn {
  font-family: var(--font-label);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  padding: 0.28rem 0.55rem;
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--on-surface-variant);
  border: none;
  cursor: pointer;
  transition: color 0.2s ease, background 0.2s ease;
  line-height: 1;
}

.lang-btn:hover {
  color: var(--on-surface);
  background: var(--surface-high);
}

.lang-btn.active {
  color: var(--tertiary);
  background: rgba(58, 74, 0, 0.3);
}

.lang-btn:focus-visible {
  outline: 2px solid var(--tertiary);
  outline-offset: 2px;
}

/* Footer email link */
.footer-email-link {
  color: var(--on-surface-variant);
  text-decoration: none;
  transition: color 0.2s;
}
.footer-email-link:hover { color: var(--secondary); }