/* ============================================================
   SD NUSANTARA BANGSA — SAGE MINT THEME
   CSS Animation & Layout Specialist
   Sections: Variables · Reset · Utilities · Keyframes ·
             Effects · Scroll · Components · Sections ·
             Micro-interactions · Responsive
   ============================================================ */

/* ============================================================
   1. CSS VARIABLES
   ============================================================ */
:root {
  /* Colors */
  --primary:      #3a8f6f;
  --secondary:    #5bb89a;
  --accent:       #ff9f43;
  --bg:           #ffffff;
  --surface:      #edfaf4;
  --text:         #2c3e35;
  --text-muted:   #5a7a6e;
  --gray-100:     #f8f9fa;
  --gray-200:     #e9ecef;
  --gray-400:     #adb5bd;
  --white:        #ffffff;

  /* Typography */
  --font-heading: 'Nunito', sans-serif;
  --font-body:    'Nunito Sans', sans-serif;

  /* Spacing */
  --section-py:   5rem;
  --navbar-h:     72px;

  /* Borders */
  --radius:       20px;
  --radius-sm:    8px;
  --radius-md:    16px;
  --radius-lg:    24px;
  --radius-xl:    32px;

  /* Shadows */
  --shadow-card:       0 4px 6px rgba(58,143,111,0.10);
  --shadow-card-hover: 0 12px 24px rgba(58,143,111,0.20);
  --shadow-sm:         0 2px 8px rgba(58,143,111,0.08);
  --shadow-md:         0 8px 24px rgba(58,143,111,0.15);
  --shadow-lg:         0 16px 48px rgba(58,143,111,0.20);

  /* Transition */
  --transition: 0.3s ease;

  /* 3D */
  --perspective: 1000px;
}

/* ============================================================
   2. RESET & BASE
   ============================================================ */
*, *::before, *::after {
  margin: 0; padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  color: var(--text);
  background: var(--bg);
  line-height: 1.65;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  line-height: 1.2;
}

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

/* ============================================================
   3. UTILITIES
   ============================================================ */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.visually-hidden {
  position: absolute; width: 1px; height: 1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap;
}

.section-label {
  display: inline-block;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: .75rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: .4rem;
}

.section-title {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 800;
  color: var(--primary);
  margin-bottom: .4rem;
}

.section-subtitle {
  color: var(--gray-400);
  margin-bottom: 2.5rem;
  font-size: 1rem;
}

section { padding: var(--section-py) 0; }
section:nth-of-type(even) { background: var(--surface); }

/* ============================================================
   4. KEYFRAMES
   ============================================================ */

/* Hero fade-in */
@keyframes heroFadeIn {
  from { opacity: 0; transform: translateY(28px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Floating variants — 3 different durations */
@keyframes float {
  0%,100% { transform: translateY(0) rotate(0deg); }
  50%      { transform: translateY(-20px) rotate(5deg); }
}

@keyframes float-slow {
  0%,100% { transform: translateY(0) rotate(0deg); }
  50%      { transform: translateY(-14px) rotate(-4deg); }
}

@keyframes float-fast {
  0%,100% { transform: translateY(0) scale(1); }
  50%      { transform: translateY(-10px) scale(1.04); }
}

/* Pulse glow on accent elements */
@keyframes pulseGlow {
  0%,100% { box-shadow: 0 0 0 0 rgba(255,159,67,.35); }
  50%      { box-shadow: 0 0 0 12px rgba(255,159,67,.0); }
}

/* Shimmer on skeleton / loading */
@keyframes shimmer {
  0%   { background-position: -600px 0; }
  100% { background-position:  600px 0; }
}

/* Slide underline */
@keyframes slideUnderline {
  from { width: 0; }
  to   { width: 100%; }
}

/* Counter roll (class added by JS) */
@keyframes countUp {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Scroll reveal classes applied by JS */
@keyframes revealUp {
  from { opacity: 0; transform: translateY(30px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes revealLeft {
  from { opacity: 0; transform: translateX(-30px); }
  to   { opacity: 1; transform: translateX(0); }
}
@keyframes revealRight {
  from { opacity: 0; transform: translateX(30px); }
  to   { opacity: 1; transform: translateX(0); }
}
@keyframes revealScale {
  from { opacity: 0; transform: scale(.92); }
  to   { opacity: 1; transform: scale(1); }
}

/* ============================================================
   5. EFFECTS
   ============================================================ */

/* ── 5a. Card 3D Tilt ──────────────────────────────────────
   data-tilt elements get rotateX/Y via JS (-8deg to +8deg)
   ───────────────────────────────────────────────────────── */
.card-3d {
  transform-style: preserve-3d;
  perspective: var(--perspective);
  transition: transform var(--transition), box-shadow var(--transition);
  will-change: transform;
}
.card-3d:hover {
  box-shadow: var(--shadow-card-hover);
}
/* Inner content lifts 12px toward viewer */
.card-3d .card-3d__inner {
  transform: translateZ(12px);
  transition: transform var(--transition);
}

/* ── 5b. Floating Elements ─────────────────────────────────
   Add class="floating", "floating--slow", "floating--fast"
   ───────────────────────────────────────────────────────── */
.floating {
  animation: float 5s ease-in-out infinite;
  will-change: transform;
}
.floating--slow {
  animation: float-slow 7s ease-in-out infinite;
  will-change: transform;
}
.floating--fast {
  animation: float-fast 3s ease-in-out infinite;
  will-change: transform;
}

/* ── 5c. Layered Depth Hero (parallax) ─────────────────────
   data-hero-parallax — JS applies translateX/Y on mousemove
   ───────────────────────────────────────────────────────── */
.hero-layer {
  position: absolute;
  will-change: transform;
  pointer-events: none;
}
.hero-layer--back  { z-index: 1; }
.hero-layer--mid   { z-index: 2; }
.hero-layer--front { z-index: 3; }

/* ── 5d. Flip Card ─────────────────────────────────────────
   Already wired in HTML; enhanced here with cubic-bezier
   ───────────────────────────────────────────────────────── */
.teacher__card {
  position: relative;
  height: 280px;
  perspective: var(--perspective);
  cursor: pointer;
  contain: layout style paint;
}
.teacher__front,
.teacher__back {
  position: absolute; inset: 0;
  border-radius: var(--radius-lg);
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
  transition: transform .6s cubic-bezier(.4,.2,.2,1);
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  text-align: center; padding: 1.5rem;
  box-shadow: var(--shadow-card);
}
.teacher__front {
  background: var(--bg);
  border: 1px solid rgba(58,143,111,.1);
}
.teacher__front img {
  width: 100px; height: 100px; border-radius: 50%;
  object-fit: cover; margin-bottom: .75rem;
  border: 3px solid var(--surface);
}
.teacher__front h3 {
  font-size: .9rem; font-weight: 800;
  color: var(--primary); margin-bottom: .25rem;
}
.teacher__back {
  background: var(--primary);
  color: var(--white);
  transform: rotateY(180deg);
  gap: .6rem;
}
.teacher__back i { opacity: .85; }
.teacher__back h3 { font-size: .95rem; font-weight: 800; }
.teacher__back p  { font-size: .82rem; opacity: .9; line-height: 1.45; }

.teacher__card:hover .teacher__front,
.teacher__card:focus .teacher__front { transform: rotateY(180deg); }
.teacher__card:hover .teacher__back,
.teacher__card:focus .teacher__back  { transform: rotateY(0deg); }

.teacher__subject {
  display: inline-block;
  background: var(--surface);
  color: var(--primary);
  font-size: .75rem; font-weight: 700;
  padding: .2rem .65rem;
  border-radius: var(--radius-lg);
}
.teacher__back .teacher__subject {
  background: rgba(255,255,255,.2);
  color: var(--white);
}

/* ── 5e. Glassmorphism ─────────────────────────────────────
   .glass — fallback for browsers without backdrop-filter
   ───────────────────────────────────────────────────────── */
.glass {
  background: rgba(255,255,255,.95);        /* fallback */
  border: 1px solid rgba(255,255,255,.25);
  border-radius: var(--radius-lg);
}
@supports (backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px)) {
  .glass {
    background: rgba(255,255,255,.15);
    -webkit-backdrop-filter: blur(12px);
    backdrop-filter: blur(12px);
  }
}

/* ── 5f. Wave Divider (2-layer 3D depth) ───────────────────
   .wave-divider wraps two SVG paths
   ───────────────────────────────────────────────────────── */
.wave-divider {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  line-height: 0; overflow: hidden;
  pointer-events: none;
}
.wave-divider svg { width: 100%; display: block; }
.wave-divider .wave-back  { opacity: .5; }
.wave-divider .wave-front { opacity: 1;  }

/* ============================================================
   6. SCROLL REVEAL ANIMATIONS
   JS adds .reveal-up / .reveal-left / .reveal-right / .reveal-scale
   to elements, and .is-visible when IntersectionObserver fires
   ============================================================ */
.reveal-up,
.reveal-left,
.reveal-right,
.reveal-scale {
  opacity: 0;
  transition: opacity .6s ease, transform .6s ease;
}

.reveal-up    { transform: translateY(30px); }
.reveal-left  { transform: translateX(-30px); }
.reveal-right { transform: translateX(30px); }
.reveal-scale { transform: scale(.92); }

.reveal-up.is-visible,
.reveal-left.is-visible,
.reveal-right.is-visible,
.reveal-scale.is-visible {
  opacity: 1;
  transform: none;
}

/* Staggered children — JS sets --delay on each child */
.stagger-children > * {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity .5s ease calc(var(--delay, 0) * 1ms),
              transform .5s ease calc(var(--delay, 0) * 1ms);
}
.stagger-children.is-visible > * {
  opacity: 1;
  transform: none;
}

/* ============================================================
   7. COMPONENTS
   ============================================================ */

/* ── Buttons ───────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: .5rem;
  padding: .75rem 1.75rem;
  border-radius: var(--radius-lg);
  font-family: var(--font-heading);
  font-weight: 700; font-size: .95rem;
  cursor: pointer; border: 2px solid transparent;
  transition: transform var(--transition),
              box-shadow var(--transition),
              background var(--transition),
              color var(--transition);
  -webkit-user-select: none;
  user-select: none;
}
.btn:active { transform: scale(.97) !important; }

.btn-primary { background: var(--primary); color: var(--white); border-color: var(--primary); }
.btn-primary:hover {
  background: #2d7358; border-color: #2d7358;
  transform: scale(1.03);
  box-shadow: var(--shadow-md);
}

.btn-outline { background: transparent; color: var(--white); border-color: var(--white); }
.btn-outline:hover {
  background: var(--white); color: var(--primary);
  transform: scale(1.03);
}

.btn-accent  { background: var(--accent); color: var(--white); border-color: var(--accent); }
.btn-accent:hover {
  background: #e8893a;
  transform: scale(1.03);
  box-shadow: 0 6px 18px rgba(255,159,67,.35);
}

/* ── Social icons ──────────────────────────────────────────── */
.social-link {
  width: 44px; height: 44px;
  border-radius: 50%;
  background: var(--surface);
  color: var(--primary);
  display: flex; align-items: center; justify-content: center;
  font-size: 1rem;
  transition: background var(--transition),
              color var(--transition),
              transform var(--transition);
}
.social-link:hover {
  background: var(--primary); color: var(--white);
  transform: translateY(-3px) rotate(10deg);
}

/* ── Focus indicator (accessibility) ──────────────────────── */
:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ── Badge ─────────────────────────────────────────────────── */
.badge {
  display: inline-block;
  font-size: .65rem; font-weight: 800;
  text-transform: uppercase; letter-spacing: .06em;
  padding: .1rem .45rem; border-radius: var(--radius-sm);
  animation: pulseGlow 2.5s ease-in-out infinite;
}
.badge--new { background: var(--accent); color: var(--white); }

/* ============================================================
   8. SECTIONS
   ============================================================ */

/* ── Navbar ──────────────────────────────────────────────────
   Sticky, backdrop-blur, scrolled shadow, active link state
   ──────────────────────────────────────────────────────────*/
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: rgba(255,255,255,.85);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(58,143,111,.1);
  transition: box-shadow var(--transition), background var(--transition);
}
.navbar.scrolled {
  background: rgba(255,255,255,.97);
  box-shadow: var(--shadow-md);
}

.navbar__inner {
  display: flex; align-items: center;
  justify-content: space-between;
  height: var(--navbar-h); gap: 1rem;
}

.navbar__brand {
  display: flex; align-items: center; gap: .75rem;
  text-decoration: none; flex-shrink: 0;
}
.navbar__logo { border-radius: var(--radius-sm); }
.navbar__school-main {
  display: block; font-family: var(--font-heading);
  font-weight: 800; font-size: 1rem; color: var(--primary);
}
.navbar__school-sub { display: block; font-size: .7rem; color: var(--gray-400); }

.navbar__links {
  display: flex; align-items: center; gap: .25rem;
}

/* Nav link — underline slides from left */
.navbar__link {
  position: relative;
  padding: .45rem .85rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-heading); font-weight: 600;
  font-size: .875rem; color: var(--text);
  transition: color var(--transition);
}
.navbar__link::after {
  content: '';
  position: absolute; bottom: 2px; left: .85rem;
  width: 0; height: 2px;
  background: var(--primary);
  border-radius: 2px;
  transition: width var(--transition);
}
.navbar__link:hover,
.navbar__link.active { color: var(--primary); }
.navbar__link:hover::after,
.navbar__link.active::after { width: calc(100% - 1.7rem); }

.navbar__link--cta {
  background: var(--primary); color: var(--white);
  border-radius: var(--radius-lg); padding: .45rem 1rem;
}
.navbar__link--cta::after { display: none; }
.navbar__link--cta:hover  { background: #2d7358; color: var(--white); }

.navbar__hamburger {
  display: none;
  background: none; border: none; cursor: pointer;
  padding: .5rem; font-size: 1.4rem; color: var(--primary);
  line-height: 1; transition: transform var(--transition);
}
.navbar__hamburger:hover { transform: scale(1.1); }
.hamburger__icon--close  { display: none; }
.navbar__hamburger[aria-expanded="true"] .hamburger__icon--open  { display: none; }
.navbar__hamburger[aria-expanded="true"] .hamburger__icon--close { display: inline; }

.navbar__mobile {
  display: none;
  padding: 1rem 1.5rem 1.5rem;
  border-top: 1px solid var(--surface);
  background: rgba(255,255,255,.97);
}
.navbar__mobile.open { display: block; animation: revealUp .25s ease; }
.navbar__mobile-link {
  display: block; padding: .65rem 0;
  font-family: var(--font-heading); font-weight: 600; font-size: .95rem;
  color: var(--text); border-bottom: 1px solid var(--surface);
  transition: color var(--transition), padding-left var(--transition);
}
.navbar__mobile-link:hover { color: var(--primary); padding-left: .5rem; }

/* ── Hero ──────────────────────────────────────────────────── */
#hero { padding: 0; }
.hero {
  position: relative;
  height: 100vh; min-height: 560px;
  overflow: hidden;
  contain: layout style paint;
}

.hero__slides,
.hero__slide { position: absolute; inset: 0; }
.hero__slide { opacity: 0; transition: opacity .8s ease; }
.hero__slide--active { opacity: 1; }
.hero__img { width: 100%; height: 100%; object-fit: cover; }
.hero__overlay {
  position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(58,143,111,.75) 0%, rgba(44,62,53,.6) 100%);
}

.hero__content {
  position: absolute; inset: 0;
  display: flex; flex-direction: column;
  align-items: flex-start; justify-content: center;
  padding-top: var(--navbar-h);
  color: var(--white);
  animation: heroFadeIn .9s .1s ease both;
}

.hero__label {
  font-size: .85rem; letter-spacing: .1em;
  text-transform: uppercase;
  font-family: var(--font-heading); font-weight: 700;
  opacity: .85; margin-bottom: .5rem;
}
.hero__title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800; line-height: 1.1;
  margin-bottom: .75rem;
  text-shadow: 0 2px 12px rgba(0,0,0,.25);
}
.hero__tagline {
  font-size: clamp(1rem, 2vw, 1.25rem);
  opacity: .9; margin-bottom: 2rem;
  max-width: 540px;
}
.hero__actions { display: flex; gap: 1rem; flex-wrap: wrap; }

.hero__nav {
  position: absolute; top: 50%; transform: translateY(-50%);
  background: rgba(255,255,255,.2); backdrop-filter: blur(4px);
  border: 1px solid rgba(255,255,255,.3); color: var(--white);
  width: 48px; height: 48px; border-radius: 50%;
  font-size: 1rem; cursor: pointer;
  transition: background var(--transition), transform var(--transition);
  display: flex; align-items: center; justify-content: center;
}
.hero__nav:hover { background: rgba(255,255,255,.4); transform: translateY(-50%) scale(1.1); }
.hero__nav--prev { left: 1.5rem; }
.hero__nav--next { right: 1.5rem; }

.hero__dots {
  position: absolute; bottom: 5rem; left: 50%; transform: translateX(-50%);
  display: flex; gap: .5rem;
}
.hero__dot {
  width: 10px; height: 10px; border-radius: 50%;
  background: rgba(255,255,255,.45); border: none;
  cursor: pointer; transition: var(--transition); padding: 0;
}
.hero__dot--active { background: var(--white); transform: scale(1.35); }

/* Hero wave divider — 2 layers for depth */
.hero__wave {
  position: absolute; bottom: 0; left: 0; right: 0;
  line-height: 0; pointer-events: none;
}
.hero__wave svg { width: 100%; height: 70px; display: block; }

/* ── About ────────────────────────────────────────────────── */
.about__history {
  background: var(--bg);
  border-left: 4px solid var(--accent);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  padding: 1.25rem 1.5rem;
  margin-bottom: 2.5rem;
  font-size: 1.025rem;
  box-shadow: var(--shadow-sm);
}

.about__vm-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem; margin-bottom: 2.5rem;
}
.about__vm-card {
  background: var(--bg);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-card);
  border: 1px solid rgba(58,143,111,.1);
  transition: transform var(--transition), box-shadow var(--transition);
}
.about__vm-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-card-hover);
}
.about__vm-icon {
  width: 52px; height: 52px; background: var(--surface);
  border-radius: var(--radius-md);
  display: flex; align-items: center; justify-content: center;
  color: var(--primary); font-size: 1.4rem; margin-bottom: 1rem;
}
.about__vm-card h3 {
  color: var(--primary); font-size: 1.1rem; font-weight: 800;
  margin-bottom: .75rem;
}
.about__vm-card ul { padding-left: 1rem; list-style: disc; }
.about__vm-card ul li { margin-bottom: .35rem; font-size: .925rem; }

.about__principal {
  display: flex; gap: 2rem; align-items: center;
  background: var(--bg); border-radius: var(--radius-lg);
  padding: 2rem; box-shadow: var(--shadow-card);
  border: 1px solid rgba(58,143,111,.1);
}
.about__principal-photo {
  border-radius: 50%; border: 4px solid var(--surface); flex-shrink: 0;
  transition: transform var(--transition);
}
.about__principal-photo:hover { transform: scale(1.05); }
.about__quote {
  border-left: 4px solid var(--accent); padding-left: 1.25rem;
}
.about__quote p {
  font-size: 1.025rem; font-style: italic;
  color: var(--text); margin-bottom: .75rem;
}
.about__quote footer strong { display: block; color: var(--primary); font-family: var(--font-heading); }
.about__quote footer span  { font-size: .875rem; color: var(--gray-400); }

/* ── Stats ────────────────────────────────────────────────── */
#stats { background: var(--primary); }

.stats__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 1.5rem; margin-bottom: 3rem;
}
.stats__item {
  text-align: center; color: var(--white);
  padding: 1.5rem 1rem;
  background: rgba(255,255,255,.1);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255,255,255,.15);
  transition: transform var(--transition), background var(--transition);
}
.stats__item:hover { transform: translateY(-4px); background: rgba(255,255,255,.18); }
.stats__icon { font-size: 2rem; margin-bottom: .5rem; opacity: .85; }
.stats__number {
  display: block;
  font-family: var(--font-heading); font-weight: 800;
  font-size: clamp(2rem, 4vw, 2.8rem);
  line-height: 1; margin-bottom: .35rem;
}
.stats__label { font-size: .875rem; opacity: .85; }

.stats__accreditation {
  display: flex; flex-direction: column; align-items: center;
  gap: .75rem; color: var(--white);
}
.stats__badge {
  width: 80px; height: 80px;
  background: var(--accent);
  border-radius: 50%;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  animation: pulseGlow 2.5s ease-in-out infinite;
}
.stats__badge-grade { font-family: var(--font-heading); font-weight: 800; font-size: 2rem; color: var(--white); }
.stats__badge-label { font-size: .65rem; text-transform: uppercase; letter-spacing: .08em; opacity: .85; }
.stats__stars { color: var(--accent); font-size: 1.25rem; }
.stats__accreditation > p { font-family: var(--font-heading); font-weight: 600; opacity: .9; }

/* ── Facilities ───────────────────────────────────────────── */
.facilities__cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.25rem; margin-bottom: 2.5rem;
}
.facilities__card {
  background: var(--bg);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  box-shadow: var(--shadow-card);
  border: 1px solid rgba(58,143,111,.08);
  transition: transform var(--transition), box-shadow var(--transition);
}
.facilities__card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-card-hover);
}
.facilities__card-icon {
  width: 52px; height: 52px; background: var(--surface);
  border-radius: var(--radius-md);
  display: flex; align-items: center; justify-content: center;
  color: var(--primary); font-size: 1.4rem; margin-bottom: 1rem;
  transition: transform var(--transition);
}
.facilities__card:hover .facilities__card-icon { transform: scale(1.1) rotate(-5deg); }
.facilities__card h3 {
  font-size: 1rem; font-weight: 800; color: var(--primary); margin-bottom: .5rem;
}
.facilities__card p { font-size: .9rem; color: var(--text-muted); }

.facilities__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem;
}
.facilities__photo {
  position: relative; border-radius: var(--radius-md);
  overflow: hidden; aspect-ratio: 4/3;
}
/* Image zoom on hover */
.facilities__photo img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform .5s ease;
}
.facilities__photo:hover img { transform: scale(1.1); }
.facilities__photo-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(to top, rgba(44,62,53,.7) 0%, transparent 60%);
  display: flex; align-items: flex-end; padding: 1rem;
  color: var(--white);
  opacity: 0; transition: opacity var(--transition);
}
.facilities__photo:hover .facilities__photo-overlay { opacity: 1; }
.facilities__photo-overlay span { font-family: var(--font-heading); font-weight: 700; }

/* ── Organization ─────────────────────────────────────────── */
.org__chart {
  display: flex; flex-direction: column; align-items: center;
}
.org__level { display: flex; gap: 1.5rem; justify-content: center; }
.org__level--multi { flex-wrap: wrap; }

.org__node {
  display: flex; flex-direction: column; align-items: center;
  gap: .4rem; text-align: center;
  background: var(--bg);
  border-radius: var(--radius-md); padding: 1rem 1.5rem;
  box-shadow: var(--shadow-card);
  border: 2px solid rgba(58,143,111,.1);
  min-width: 160px;
  transition: transform var(--transition), box-shadow var(--transition);
}
.org__node:hover { transform: translateY(-4px); box-shadow: var(--shadow-card-hover); }
.org__node img { border-radius: 50%; border: 3px solid var(--surface); }
.org__node strong { font-family: var(--font-heading); font-size: .9rem; color: var(--primary); }
.org__node span   { font-size: .775rem; color: var(--gray-400); }
.org__node--principal { border-color: var(--primary); }
.org__node--principal strong { font-size: 1rem; }
.org__connector {
  width: 2px; height: 2rem;
  background: var(--secondary); margin: 0 auto;
}

/* ── Teachers (flip cards handled in §5d) ─────────────────── */
.teachers__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1.5rem;
}

/* ── Student Affairs Tabs ─────────────────────────────────── */
.tabs {
  display: flex; gap: .5rem;
  margin-bottom: 2rem; flex-wrap: wrap;
}
.tab {
  display: inline-flex; align-items: center; gap: .4rem;
  padding: .6rem 1.25rem;
  border-radius: var(--radius-lg);
  font-family: var(--font-heading); font-weight: 700; font-size: .875rem;
  border: 2px solid rgba(58,143,111,.2);
  background: transparent; color: var(--text);
  cursor: pointer; transition: var(--transition);
}
.tab:hover    { border-color: var(--primary); color: var(--primary); transform: translateY(-2px); }
.tab--active  { background: var(--primary); color: var(--white); border-color: var(--primary); }
.tab--active:hover { transform: none; }

.tab-content { display: none; animation: revealUp .35s ease; }
.tab-content--active { display: block; }

.tab-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1.25rem;
}
.tab-item {
  background: var(--bg);
  border-radius: var(--radius-lg); padding: 1.5rem;
  text-align: center; box-shadow: var(--shadow-card);
  border: 1px solid rgba(58,143,111,.08);
  transition: transform var(--transition), box-shadow var(--transition);
}
.tab-item:hover { transform: translateY(-6px); box-shadow: var(--shadow-card-hover); }
.tab-item i { color: var(--primary); margin-bottom: .75rem; }
.tab-item h4 { font-size: .95rem; font-weight: 800; color: var(--primary); margin-bottom: .35rem; }
.tab-item p  { font-size: .85rem; color: var(--text-muted); }

/* ── Achievements Timeline ────────────────────────────────── */
.timeline {
  display: flex; flex-direction: column;
  position: relative;
  max-width: 700px; margin: 0 auto;
}
.timeline::before {
  content: '';
  position: absolute; left: 32px; top: 0; bottom: 0;
  width: 2px; background: var(--secondary);
}
.timeline__item {
  display: flex; gap: 1.5rem; align-items: flex-start;
  padding-bottom: 1.75rem;
}
.timeline__badge {
  width: 64px; height: 64px; flex-shrink: 0;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.4rem; z-index: 1;
  border: 3px solid var(--bg); box-shadow: var(--shadow-sm);
  transition: transform var(--transition);
}
.timeline__item:hover .timeline__badge { transform: scale(1.1); }
.timeline__item--gold   .timeline__badge { background: #ffd700; color: #7a5800; }
.timeline__item--silver .timeline__badge { background: #c0c0c0; color: #5a5a5a; }
.timeline__item--bronze .timeline__badge { background: #cd7f32; color: #fff; }

.timeline__content {
  background: var(--bg); border-radius: var(--radius-md);
  padding: 1rem 1.25rem; box-shadow: var(--shadow-card); flex: 1;
  border: 1px solid rgba(58,143,111,.08);
  transition: transform var(--transition), box-shadow var(--transition);
}
.timeline__item:hover .timeline__content { transform: translateX(4px); box-shadow: var(--shadow-card-hover); }
.timeline__year {
  font-size: .75rem; font-weight: 800; letter-spacing: .06em;
  color: var(--accent); text-transform: uppercase;
}
.timeline__content h4 {
  font-size: .975rem; font-weight: 800;
  color: var(--primary); margin: .2rem 0 .5rem;
}
.timeline__level {
  display: inline-block; font-size: .75rem; font-weight: 700;
  padding: .15rem .6rem; border-radius: var(--radius-lg);
}
.timeline__level--national { background: #ffecd2; color: #b45309; }
.timeline__level--province { background: #e0f2fe; color: #0369a1; }
.timeline__level--city     { background: var(--surface); color: var(--primary); }

/* ── News ─────────────────────────────────────────────────── */
.news__layout {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: 2.5rem; align-items: start;
}
.news__cards { display: flex; flex-direction: column; gap: 1.5rem; }
.news__card {
  background: var(--bg);
  border-radius: var(--radius-lg); overflow: hidden;
  box-shadow: var(--shadow-card);
  border: 1px solid rgba(58,143,111,.08);
  display: grid; grid-template-columns: 160px 1fr;
  transition: transform var(--transition), box-shadow var(--transition);
}
.news__card:hover { transform: translateY(-4px); box-shadow: var(--shadow-card-hover); }
.news__card img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.news__card:hover img { transform: scale(1.1); }
.news__card-body { padding: 1.25rem; }
.news__date { font-size: .775rem; color: var(--gray-400); margin-bottom: .35rem; display: block; }
.news__title { font-size: .975rem; font-weight: 800; color: var(--primary); margin-bottom: .5rem; line-height: 1.3; }
.news__title a { transition: color var(--transition); }
.news__title a:hover { color: var(--secondary); text-decoration: underline; }
.news__excerpt { font-size: .875rem; color: var(--text); opacity: .8; }

.news__sidebar { display: flex; flex-direction: column; gap: 1.5rem; }
.news__announcements,
.news__calendar {
  background: var(--bg); border-radius: var(--radius-lg);
  padding: 1.5rem; box-shadow: var(--shadow-card);
  border: 1px solid rgba(58,143,111,.08);
}
.news__announcements h3,
.news__calendar h3 {
  font-size: 1rem; font-weight: 800; color: var(--primary);
  margin-bottom: 1rem; display: flex; gap: .5rem; align-items: center;
}
.news__announcements ul  { display: flex; flex-direction: column; gap: .85rem; }
.news__announcements li  {
  display: flex; flex-direction: column; gap: .2rem;
  padding-bottom: .85rem; border-bottom: 1px solid var(--surface);
  font-size: .875rem;
}
.news__announcements li:last-child { border-bottom: none; padding-bottom: 0; }
.news__announcements a { color: var(--text); transition: color var(--transition); }
.news__announcements a:hover { color: var(--primary); }
.news__announcements time { font-size: .75rem; color: var(--gray-400); }

.news__calendar table { width: 100%; border-collapse: collapse; font-size: .875rem; }
.news__calendar th {
  text-align: left; font-size: .75rem; font-weight: 700;
  color: var(--gray-400); padding: .4rem .5rem;
  border-bottom: 2px solid var(--surface);
}
.news__calendar td { padding: .55rem .5rem; border-bottom: 1px solid var(--surface); }
.news__calendar tr:hover td { background: var(--surface); }

/* ── Gallery ──────────────────────────────────────────────── */
.gallery__grid { columns: 3 280px; gap: 1rem; }
.gallery__item {
  position: relative; border-radius: var(--radius-md);
  overflow: hidden; break-inside: avoid; margin-bottom: 1rem;
  cursor: zoom-in;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition);
}
.gallery__item:hover { box-shadow: var(--shadow-md); }
.gallery__item img {
  width: 100%; display: block;
  transition: transform .5s ease;
}
.gallery__item:hover img { transform: scale(1.1); }
.gallery__overlay {
  position: absolute; inset: 0;
  background: linear-gradient(to top, rgba(44,62,53,.7) 0%, transparent 55%);
  display: flex; align-items: flex-end; padding: 1rem;
  color: var(--white);
  opacity: 0; transition: opacity var(--transition);
}
.gallery__item:hover .gallery__overlay { opacity: 1; }
.gallery__overlay span { font-family: var(--font-heading); font-weight: 700; font-size: .9rem; }

/* Lightbox */
.lightbox {
  position: fixed; inset: 0; z-index: 2000;
  background: rgba(0,0,0,.92);
  display: flex; flex-direction: column;
  align-items: center; justify-content: center; padding: 2rem;
  animation: revealScale .25s ease;
}
.lightbox[hidden] { display: none; }
.lightbox__img {
  max-width: 90vw; max-height: 80vh;
  border-radius: var(--radius-md); object-fit: contain;
  box-shadow: 0 24px 64px rgba(0,0,0,.5);
}
.lightbox__caption {
  color: var(--white); margin-top: 1rem;
  font-family: var(--font-heading); font-size: 1rem;
}
.lightbox__close {
  position: absolute; top: 1.5rem; right: 1.5rem;
  background: rgba(255,255,255,.1); border: 1px solid rgba(255,255,255,.2);
  color: var(--white); width: 44px; height: 44px;
  border-radius: 50%; font-size: 1.1rem;
  cursor: pointer; display: flex; align-items: center; justify-content: center;
  transition: background var(--transition), transform var(--transition);
}
.lightbox__close:hover { background: rgba(255,255,255,.25); transform: rotate(90deg); }

/* ── Testimonials ─────────────────────────────────────────── */
.testimonials__carousel { position: relative; overflow: hidden; }
.testimonials__track {
  display: flex;
  transition: transform .5s cubic-bezier(.4,.2,.2,1);
}
.testimonial__card { min-width: 100%; padding: 0 .5rem; }
.testimonial__card blockquote {
  background: var(--bg);
  border-radius: var(--radius-xl); padding: 2.5rem;
  box-shadow: var(--shadow-md);
  max-width: 640px; margin: 0 auto; text-align: center;
}
.testimonial__card blockquote > i {
  color: var(--accent); font-size: 2rem; opacity: .4; margin-bottom: 1rem;
}
.testimonial__card blockquote p { font-size: 1.025rem; font-style: italic; margin-bottom: 1.5rem; }
.testimonial__card blockquote footer {
  display: flex; align-items: center;
  justify-content: center; gap: 1rem;
}
.testimonial__card footer img {
  width: 56px; height: 56px; border-radius: 50%;
  border: 3px solid var(--surface);
  transition: transform var(--transition);
}
.testimonial__card:hover footer img { transform: scale(1.08); }
.testimonial__card footer div { text-align: left; }
.testimonial__card footer strong { display: block; font-family: var(--font-heading); color: var(--primary); }
.testimonial__card footer span  { font-size: .85rem; color: var(--gray-400); }

.testimonials__dots {
  display: flex; justify-content: center; gap: .5rem;
  margin-top: 1.5rem;
}
.testimonials__dot {
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--gray-200); border: none; cursor: pointer;
  transition: var(--transition); padding: 0;
}
.testimonials__dot--active { background: var(--primary); transform: scale(1.3); }

/* ── Location ─────────────────────────────────────────────── */
.location__layout {
  display: grid; grid-template-columns: 1fr 320px;
  gap: 2rem; align-items: start;
}
.location__map {
  border-radius: var(--radius-md); overflow: hidden;
  box-shadow: var(--shadow-md);
}
.location__info { display: flex; flex-direction: column; gap: 1.5rem; }
.location__address,
.location__hours {
  background: var(--bg); border-radius: var(--radius-lg);
  padding: 1.5rem; box-shadow: var(--shadow-card);
  border: 1px solid rgba(58,143,111,.08);
  transition: transform var(--transition), box-shadow var(--transition);
}
.location__address:hover,
.location__hours:hover { transform: translateY(-3px); box-shadow: var(--shadow-card-hover); }
.location__address h3,
.location__hours h3 {
  font-size: 1rem; font-weight: 800; color: var(--primary);
  margin-bottom: .85rem; display: flex; gap: .5rem; align-items: center;
}
.location__address address { font-size: .95rem; line-height: 1.7; }
.location__hours table { width: 100%; border-collapse: collapse; font-size: .875rem; }
.location__hours td { padding: .45rem 0; border-bottom: 1px solid var(--surface); }
.location__hours td:last-child { text-align: right; font-weight: 600; color: var(--primary); }
.location__hours tr:last-child td { border-bottom: none; }

/* ── Contact ──────────────────────────────────────────────── */
.contact__layout {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 2.5rem; align-items: start;
}
.contact__wa {
  display: flex; align-items: center; gap: 1rem;
  background: #25d366; color: var(--white);
  border-radius: var(--radius-lg); padding: 1rem 1.5rem;
  margin-bottom: 1.5rem;
  font-size: 1.75rem; font-weight: 800;
  font-family: var(--font-heading);
  transition: transform var(--transition), box-shadow var(--transition);
}
.contact__wa div span   { display: block; font-size: .8rem; opacity: .85; font-weight: 600; }
.contact__wa div strong { display: block; font-size: 1rem; }
.contact__wa:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 8px 24px rgba(37,211,102,.35);
}

.contact__details { display: flex; flex-direction: column; gap: .85rem; margin-bottom: 1.5rem; }
.contact__details li { display: flex; align-items: center; gap: .75rem; font-size: .95rem; }
.contact__details li i { color: var(--primary); width: 20px; text-align: center; }
.contact__details a { transition: color var(--transition); }
.contact__details a:hover { color: var(--primary); }
.contact__socials { display: flex; gap: .75rem; flex-wrap: wrap; }

.contact__form-wrap {
  background: var(--bg); border-radius: var(--radius-xl);
  padding: 2rem; box-shadow: var(--shadow-md);
  border: 1px solid rgba(58,143,111,.1);
}
.contact__form h3 {
  font-size: 1.2rem; font-weight: 800; color: var(--primary); margin-bottom: 1.5rem;
}
.form__group { margin-bottom: 1.1rem; }
.form__group label {
  display: block; font-family: var(--font-heading); font-weight: 700;
  font-size: .875rem; margin-bottom: .4rem; color: var(--text);
}
/* Input focus glow */
.form__group input,
.form__group textarea {
  width: 100%; padding: .75rem 1rem;
  border: 2px solid var(--gray-200);
  border-radius: var(--radius-md);
  font-family: var(--font-body); font-size: .95rem;
  color: var(--text);
  transition: border-color var(--transition), box-shadow var(--transition);
  background: var(--bg); resize: vertical;
}
.form__group input:focus,
.form__group textarea:focus {
  outline: none;
  border-color: var(--secondary);
  box-shadow: 0 0 0 4px rgba(91,184,154,.15);
}
.form__group input:hover,
.form__group textarea:hover { border-color: var(--secondary); }

/* ── Footer ───────────────────────────────────────────────── */
#footer { background: var(--text); color: rgba(255,255,255,.75); }
.footer__main { padding: 4rem 0 2rem; }
.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 2.5rem;
}
.footer__brand .footer__logo-link {
  display: flex; align-items: center; gap: .75rem;
  color: var(--white); margin-bottom: 1rem;
}
.footer__brand .footer__logo-link img { border-radius: var(--radius-sm); }
.footer__brand .footer__logo-link span { font-family: var(--font-heading); font-weight: 800; font-size: 1.05rem; }
.footer__brand p    { font-size: .875rem; line-height: 1.65; margin-bottom: 1rem; }
.footer__brand address { font-size: .875rem; display: flex; gap: .5rem; align-items: flex-start; }
.footer__brand address i { color: var(--accent); margin-top: .25rem; }

.footer__links h4,
.footer__programs h4,
.footer__social h4 {
  font-family: var(--font-heading); font-weight: 800;
  font-size: .875rem; letter-spacing: .06em; text-transform: uppercase;
  color: var(--white); margin-bottom: 1rem;
}
.footer__links ul li,
.footer__programs ul li { margin-bottom: .5rem; }
.footer__links a,
.footer__programs a {
  font-size: .875rem; color: rgba(255,255,255,.65);
  transition: color var(--transition), padding-left var(--transition);
}
.footer__links a:hover,
.footer__programs a:hover { color: var(--white); padding-left: .35rem; }

.footer__social-links { display: flex; gap: .65rem; flex-wrap: wrap; margin-bottom: 1.25rem; }
.footer__social .social-link { background: rgba(255,255,255,.1); color: var(--white); }
.footer__social .social-link:hover { background: var(--primary); }

.footer__contact-quick { display: flex; flex-direction: column; gap: .6rem; }
.footer__contact-quick a {
  display: flex; align-items: center; gap: .5rem;
  font-size: .85rem; color: rgba(255,255,255,.65);
  transition: color var(--transition);
}
.footer__contact-quick a:hover { color: var(--white); }
.footer__contact-quick i { color: var(--accent); width: 16px; }

.footer__bottom { border-top: 1px solid rgba(255,255,255,.1); padding: 1.25rem 0; }
.footer__bottom-inner {
  display: flex; justify-content: space-between;
  align-items: center; gap: 1rem; flex-wrap: wrap;
  font-size: .825rem;
}
.footer__bottom-inner strong { color: var(--accent); }

/* ── Back to Top ──────────────────────────────────────────── */
.back-to-top {
  position: fixed; bottom: 2rem; right: 2rem; z-index: 900;
  width: 48px; height: 48px; border-radius: 50%;
  background: var(--primary); color: var(--white);
  border: none; cursor: pointer; font-size: 1rem;
  display: flex; align-items: center; justify-content: center;
  box-shadow: var(--shadow-md);
  transition: var(--transition);
  animation: pulseGlow 3s ease-in-out infinite;
}
.back-to-top:hover { background: #2d7358; transform: translateY(-4px) scale(1.1); }
.back-to-top[hidden] { display: none; }

/* ============================================================
   9. MICRO-INTERACTIONS (consolidated)
   ============================================================ */

/* Nav link active bar */
.navbar__link::after {
  content: '';
  position: absolute; bottom: 2px; left: .85rem;
  width: 0; height: 2px; background: var(--primary); border-radius: 2px;
  transition: width var(--transition);
}
.navbar__link:hover::after,
.navbar__link.active::after { width: calc(100% - 1.7rem); }

/* Card generic hover lift */
.card-hover {
  transition: transform var(--transition), box-shadow var(--transition);
}
.card-hover:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-card-hover);
}

/* ============================================================
   10. RESPONSIVE
   ============================================================ */

/* ── 1024px – tablet ── */
@media (max-width: 1024px) {
  .news__layout     { grid-template-columns: 1fr; }
  .location__layout { grid-template-columns: 1fr; }
  .footer__grid     { grid-template-columns: 1fr 1fr; }
}

/* ── 768px – mobile ── */
@media (max-width: 768px) {
  :root { --section-py: 3.5rem; }

  .navbar__links     { display: none; }
  .navbar__hamburger { display: flex; align-items: center; justify-content: center; }

  .about__principal  { flex-direction: column; text-align: center; }
  .about__principal-photo { align-self: center; }
  .about__quote { border-left: none; border-top: 4px solid var(--accent); padding: 1rem 0 0; }

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

  .news__card        { grid-template-columns: 1fr; }
  .news__card img    { height: 180px; }

  .org__level--multi { gap: 1rem; }
  .org__node { min-width: 120px; padding: .75rem 1rem; }

  .footer__grid { grid-template-columns: 1fr; }
  .footer__bottom-inner { flex-direction: column; text-align: center; }

  .gallery__grid { columns: 2 200px; }

  /* Disable 3D tilt on touch devices */
  .card-3d { perspective: none; }

  /* Teachers flip by click only — CSS hover is unreliable on touch */
  .teacher__card:hover .teacher__front { transform: none; }
  .teacher__card:hover .teacher__back  { transform: rotateY(180deg); }
  .teacher__card.flipped .teacher__front { transform: rotateY(180deg); }
  .teacher__card.flipped .teacher__back  { transform: rotateY(0deg); }
}

/* ── 480px – small mobile ── */
@media (max-width: 480px) {
  .hero__content { align-items: center; text-align: center; }
  .hero__actions { justify-content: center; }
  .stats__grid   { grid-template-columns: 1fr 1fr; }
  .teachers__grid { grid-template-columns: 1fr 1fr; }
  .gallery__grid  { columns: 1; }
  .hero__nav      { width: 36px; height: 36px; font-size: .8rem; }
}

/* ── Print ── */
@media print {
  .navbar, .back-to-top, .hero__nav, .hero__dots { display: none; }
  section { page-break-inside: avoid; }
}