/* ==========================================================================
   CESI Algérie — Premium Design System
   UI/UX Pro Max — Academic / Engineering School
   Red × Charcoal × White identity
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Design Tokens (CSS Custom Properties)
   -------------------------------------------------------------------------- */
:root {
  /* Brand Colors */
  --color-red:          #C8102E;
  --color-red-dark:     #a00d24;
  --color-red-light:    #e8102e;
  --color-red-bg:       rgba(200,16,46,.06);
  --color-red-bg-md:    rgba(200,16,46,.12);

  /* Neutrals */
  --color-charcoal:     #1d1d1b;
  --color-charcoal-90:  #2a2a28;
  --color-charcoal-80:  #444442;
  --color-charcoal-60:  #555553;
  --color-charcoal-40:  #888886;
  --color-white:        #ffffff;
  --color-off-white:    #f8f7f5;
  --color-light-grey:   #f0efed;
  --color-mid-grey:     #e2e0dc;
  --color-border:       #e4e2de;
  --color-footer-bg:    #0f0f0e;

  /* Typography */
  --font-heading: 'DM Sans', 'Source Sans 3', 'Helvetica Neue', Arial, sans-serif;
  --font-sans:    'Source Sans 3', 'Helvetica Neue', Arial, sans-serif;

  --font-size-xs:      0.75rem;
  --font-size-sm:      0.875rem;
  --font-size-md:      1rem;
  --font-size-lg:      1.125rem;
  --font-size-xl:      1.25rem;
  --font-size-2xl:     1.5rem;
  --font-size-3xl:     1.875rem;
  --font-size-4xl:     2.25rem;
  --font-size-5xl:     3rem;

  /* Spacing */
  --space-1:   0.25rem;
  --space-2:   0.5rem;
  --space-3:   0.75rem;
  --space-4:   1rem;
  --space-5:   1.25rem;
  --space-6:   1.5rem;
  --space-7:   1.75rem;
  --space-8:   2rem;
  --space-10:  2.5rem;
  --space-12:  3rem;
  --space-16:  4rem;
  --space-20:  5rem;
  --space-24:  6rem;

  /* Layout */
  --container-max:   1240px;
  --container-pad:   clamp(1rem, 4vw, 2.5rem);
  --header-height:   80px;
  --radius-sm:       4px;
  --radius-md:       8px;
  --radius-lg:       14px;
  --radius-xl:       20px;
  --radius-pill:     999px;

  /* Shadows — multi-layer for premium depth */
  --shadow-sm:   0 1px 3px rgba(0,0,0,.06), 0 1px 2px rgba(0,0,0,.04);
  --shadow-md:   0 4px 16px rgba(0,0,0,.08), 0 2px 4px rgba(0,0,0,.04);
  --shadow-lg:   0 10px 40px rgba(0,0,0,.10), 0 4px 8px rgba(0,0,0,.06);
  --shadow-xl:   0 20px 60px rgba(0,0,0,.14), 0 8px 16px rgba(0,0,0,.08);
  --shadow-red:  0 4px 24px rgba(200,16,46,.28), 0 2px 8px rgba(200,16,46,.15);

  /* Transitions */
  --transition-fast: 160ms cubic-bezier(.4,0,.2,1);
  --transition-base: 260ms cubic-bezier(.4,0,.2,1);
  --transition-slow: 420ms cubic-bezier(.4,0,.2,1);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
}

body {
  font-family: var(--font-sans);
  font-size: var(--font-size-md);
  line-height: 1.7;
  color: var(--color-charcoal);
  background: var(--color-white);
  min-height: 100vh;
}

img, svg { display: block; max-width: 100%; }
img { height: auto; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { font: inherit; cursor: pointer; border: none; background: none; }
input, select, textarea { font: inherit; }

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  line-height: 1.2;
  font-weight: 700;
  color: var(--color-charcoal);
}

/* --------------------------------------------------------------------------
   3. Skip links
   -------------------------------------------------------------------------- */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-4);
  z-index: 10000;
  padding: var(--space-3) var(--space-6);
  background: var(--color-red);
  color: var(--color-white);
  font-weight: 700;
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
}
.skip-link:focus { top: var(--space-4); }

/* --------------------------------------------------------------------------
   4. Container & Layout Utilities
   -------------------------------------------------------------------------- */
.container {
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

.section { padding-block: var(--space-20); }
.section--white { background: var(--color-white); }
.section--light { background: var(--color-off-white); }
.section--dark  { background: var(--color-charcoal); color: var(--color-white); }

.section-cta-link {
  text-align: center;
  margin-top: var(--space-12);
}

/* --------------------------------------------------------------------------
   5. Typography Utilities
   -------------------------------------------------------------------------- */
.section-title-block { margin-bottom: var(--space-12); }

.section-title-block .section-anchor {
  position: relative;
  top: calc(-1 * (var(--header-height) + 4rem));
  visibility: hidden;
  pointer-events: none;
}

.section-title-block h2 {
  font-family: var(--font-heading);
  font-size: clamp(var(--font-size-3xl), 3.5vw, var(--font-size-4xl));
  font-weight: 700;
  color: var(--color-charcoal);
  position: relative;
  padding-bottom: var(--space-5);
  margin-bottom: var(--space-4);
  line-height: 1.2;
}
.section-title-block h2::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0;
  width: 64px; height: 4px;
  background: var(--color-red);
  border-radius: 2px;
}
.section-title-block.text-center h2::after {
  left: 50%;
  transform: translateX(-50%);
}

.section-title-block .section-subtitle {
  font-size: var(--font-size-lg);
  color: var(--color-charcoal-60);
  max-width: 680px;
  margin-top: var(--space-3);
  line-height: 1.7;
}

.section-lead {
  font-size: var(--font-size-lg);
  color: var(--color-charcoal-60);
  margin-bottom: var(--space-8);
  max-width: 800px;
  line-height: 1.7;
}

.section-heading {
  font-family: var(--font-heading);
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--color-charcoal);
  margin-bottom: var(--space-6);
}

/* --------------------------------------------------------------------------
   6. Buttons
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.7em 1.8em;
  min-height: 46px;
  font-family: var(--font-heading);
  font-size: var(--font-size-md);
  font-weight: 600;
  letter-spacing: .01em;
  border-radius: var(--radius-md);
  border: 2px solid transparent;
  transition:
    background var(--transition-fast),
    color var(--transition-fast),
    border-color var(--transition-fast),
    box-shadow var(--transition-fast),
    transform var(--transition-fast);
  white-space: nowrap;
  cursor: pointer;
  position: relative;
}

.btn:active { transform: translateY(1px); }

.btn-primary {
  background: var(--color-red);
  color: var(--color-white);
  border-color: var(--color-red);
}
.btn-primary:hover, .btn-primary:focus-visible {
  background: var(--color-red-dark);
  border-color: var(--color-red-dark);
  box-shadow: var(--shadow-red);
}

.btn-white {
  background: var(--color-white);
  color: var(--color-red);
  border-color: var(--color-white);
  font-weight: 700;
}
.btn-white:hover, .btn-white:focus-visible {
  background: var(--color-off-white);
  box-shadow: 0 4px 16px rgba(0,0,0,.18);
}

.btn-white-outline {
  background: transparent;
  color: var(--color-white);
  border-color: rgba(255,255,255,.6);
}
.btn-white-outline:hover, .btn-white-outline:focus-visible {
  background: rgba(255,255,255,.1);
  border-color: var(--color-white);
}

.btn-outline {
  background: transparent;
  color: var(--color-charcoal);
  border-color: var(--color-border);
}
.btn-outline:hover, .btn-outline:focus-visible {
  border-color: var(--color-charcoal-80);
  box-shadow: var(--shadow-sm);
}

.btn-outline-red {
  background: transparent;
  color: var(--color-red);
  border-color: var(--color-red);
}
.btn-outline-red:hover, .btn-outline-red:focus-visible {
  background: var(--color-red);
  color: var(--color-white);
  box-shadow: var(--shadow-red);
}

.btn-lg { padding: 0.8em 2.2em; font-size: var(--font-size-lg); min-height: 52px; }
.btn-sm { padding: 0.45em 1.2em; font-size: var(--font-size-sm); min-height: 36px; }
.btn-block { width: 100%; justify-content: center; }

/* --------------------------------------------------------------------------
   7. Site Header & Navbar
   -------------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 500;
  background: var(--color-white);
  height: var(--header-height);
  transition: box-shadow var(--transition-fast);
}

/* Red top accent bar */
.site-header::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--color-red);
  z-index: 1;
}

.site-header.is-scrolled {
  box-shadow: 0 2px 20px rgba(0,0,0,.08);
  border-bottom: 1px solid var(--color-border);
}

.site-header .container { height: 100%; }

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  gap: var(--space-6);
  padding-top: 3px;
}

.site-logo img,
.header-logo img { height: 46px; width: auto; }

/* Text fallback when logo image fails to load */
.logo-text {
  font-family: var(--font-heading);
  font-size: var(--font-size-xl);
  font-weight: 800;
  color: var(--color-red);
  letter-spacing: -.02em;
}
.site-footer .logo-text { color: var(--color-white); }

/* Desktop nav */
.main-nav { display: flex; align-items: center; flex: 1; }

.nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  flex: 1;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-item { position: relative; }

.nav-link {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-2) var(--space-3);
  font-family: var(--font-heading);
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-charcoal-80);
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast), background var(--transition-fast);
  white-space: nowrap;
}
.nav-link:hover, .nav-link:focus-visible, .nav-link.is-active {
  color: var(--color-red);
  background: var(--color-red-bg);
}

.nav-arrow { transition: transform var(--transition-fast); }
.nav-item.is-open .nav-arrow { transform: rotate(180deg); }

/* Dropdown */
.nav-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  min-width: 220px;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  padding: var(--space-2) 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px);
  transition:
    opacity var(--transition-fast),
    transform var(--transition-fast),
    visibility var(--transition-fast);
  z-index: 100;
}
.nav-item:hover .nav-dropdown,
.nav-item.is-open .nav-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.nav-dropdown-item {
  display: block;
  padding: var(--space-2) var(--space-5);
  font-size: var(--font-size-sm);
  color: var(--color-charcoal-80);
  transition: background var(--transition-fast), color var(--transition-fast);
}
.nav-dropdown-item:hover { background: var(--color-off-white); color: var(--color-red); }

/* Mega menu */
.mega-menu {
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) translateY(-6px);
  width: min(900px, 90vw);
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  padding: var(--space-8);
  opacity: 0;
  visibility: hidden;
  transition:
    opacity var(--transition-fast),
    transform var(--transition-fast),
    visibility var(--transition-fast);
  z-index: 100;
}
.nav-item:hover .mega-menu,
.nav-item.is-open .mega-menu {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}
.mega-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-8);
}

.mega-col-title,
.mega-group-title {
  font-family: var(--font-heading);
  font-size: var(--font-size-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .1em;
  color: var(--color-charcoal-40);
  margin-bottom: var(--space-3);
  padding-bottom: var(--space-2);
  border-bottom: 1px solid var(--color-border);
}
.mega-link {
  display: block;
  padding: var(--space-2) 0;
  font-size: var(--font-size-sm);
  color: var(--color-charcoal-80);
  transition: color var(--transition-fast);
}
.mega-link:hover { color: var(--color-red); }
.mega-link--contact { color: var(--color-red); font-weight: 600; margin-top: var(--space-3); }

.mega-cta { display: flex; flex-direction: column; gap: var(--space-3); }
.mega-cta .btn { align-self: flex-start; }

.header-actions { display: flex; align-items: center; gap: var(--space-3); }

/* Burger button */
.burger-btn {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 42px;
  height: 42px;
  padding: 10px;
  border-radius: var(--radius-md);
  transition: background var(--transition-fast);
}
.burger-btn:hover { background: var(--color-light-grey); }

.burger-bar {
  display: block;
  height: 2px;
  width: 22px;
  background: var(--color-charcoal);
  border-radius: 2px;
  transition: transform var(--transition-base), opacity var(--transition-base), width var(--transition-base);
  transform-origin: center;
}
.burger-btn[aria-expanded="true"] .burger-bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.burger-btn[aria-expanded="true"] .burger-bar:nth-child(2) { opacity: 0; width: 0; }
.burger-btn[aria-expanded="true"] .burger-bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile menu */
.mobile-menu {
  position: fixed;
  top: var(--header-height);
  left: 0; right: 0; bottom: 0;
  background: var(--color-white);
  overflow-y: auto;
  z-index: 490;
  padding: var(--space-6) var(--container-pad) var(--space-16);
  transform: translateX(100%);
  transition: transform var(--transition-base);
  visibility: hidden;
}
.mobile-menu.is-open {
  transform: translateX(0);
  visibility: visible;
}

.mobile-nav-item { border-bottom: 1px solid var(--color-border); }
.mobile-nav-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.mobile-nav-link {
  display: block;
  flex: 1;
  padding: var(--space-4) 0;
  font-family: var(--font-heading);
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--color-charcoal);
}
.mobile-nav-link.is-active { color: var(--color-red); }
.mobile-nav-link:hover { color: var(--color-red); }

.mobile-expand-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px; height: 36px;
  border-radius: var(--radius-md);
  color: var(--color-charcoal-60);
  transition: transform var(--transition-fast), background var(--transition-fast);
}
.mobile-expand-btn[aria-expanded="true"] {
  transform: rotate(180deg);
  background: var(--color-light-grey);
  color: var(--color-red);
}

.mobile-sub-list {
  padding: var(--space-2) 0 var(--space-4) var(--space-5);
}
.mobile-sub-list[hidden] { display: none; }
.mobile-sub-link {
  display: block;
  padding: var(--space-2) 0;
  font-size: var(--font-size-md);
  color: var(--color-charcoal-60);
  border-bottom: 1px dotted var(--color-border);
}
.mobile-sub-link:last-child { border-bottom: none; }
.mobile-sub-link:hover { color: var(--color-red); }

.mobile-menu-footer {
  margin-top: var(--space-8);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

/* --------------------------------------------------------------------------
   8. Hero
   -------------------------------------------------------------------------- */
.hero {
  position: relative;
  display: flex;
  align-items: center;
  background-color: var(--color-charcoal);
  background-image: var(--hero-bg, none);
  background-size: cover;
  background-position: center;
  overflow: hidden;
  color: var(--color-white);
}

/* Fallback gradient when no image */
.hero:not([style*="url("]):not([style*="url(%27"]) {
  background: linear-gradient(135deg, #1d1d1b 0%, #2a1a1a 55%, #3a0d1c 100%);
}

.hero--xl { min-height: max(560px, 85vh); }
.hero--lg { min-height: min(72vh, 600px); }
.hero--md { min-height: min(52vh, 460px); }
.hero--sm { min-height: min(36vh, 300px); }

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, rgba(0,0,0,.88) 0%, rgba(0,0,0,.58) 52%, rgba(0,0,0,.2) 100%);
}

/* Geometric accent shape */
.hero::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  right: 0;
  height: 60px;
  background: inherit;
  background: var(--section-after-bg, var(--color-white));
  clip-path: polygon(0 100%, 100% 100%, 100% 60%, 0 100%);
  pointer-events: none;
  z-index: 2;
}

.hero--no-clip::after { display: none; }

.hero-inner {
  position: relative;
  z-index: 1;
  max-width: var(--container-max);
  margin-inline: auto;
  padding: var(--space-24) var(--container-pad) calc(var(--space-24) + 40px);
  width: 100%;
}

.hero-content { max-width: 660px; }

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: .3em 1em .3em .6em;
  background: rgba(200,16,46,.85);
  color: var(--color-white);
  font-family: var(--font-heading);
  font-size: var(--font-size-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .08em;
  border-radius: var(--radius-pill);
  margin-bottom: var(--space-5);
  backdrop-filter: blur(4px);
}
.hero-badge::before {
  content: '';
  width: 6px; height: 6px;
  border-radius: 50%;
  background: rgba(255,255,255,.8);
  flex-shrink: 0;
}

.hero-title {
  font-family: var(--font-heading);
  font-size: clamp(var(--font-size-4xl), 5.5vw, 3.75rem);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: var(--space-5);
  text-shadow: 0 2px 12px rgba(0,0,0,.35);
  letter-spacing: -.01em;
}

.hero-text {
  font-size: clamp(var(--font-size-md), 2.2vw, var(--font-size-xl));
  opacity: .9;
  margin-bottom: var(--space-8);
  max-width: 540px;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  align-items: center;
}

.hero-trust {
  margin-top: var(--space-8);
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
}
.hero-trust-label {
  font-size: var(--font-size-xs);
  color: rgba(255,255,255,.55);
  text-transform: uppercase;
  letter-spacing: .08em;
  font-weight: 600;
}
.hero-trust-item {
  font-size: var(--font-size-sm);
  color: rgba(255,255,255,.8);
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: var(--space-1);
}
.hero-trust-item::before {
  content: '✓';
  color: var(--color-red-light);
  font-size: var(--font-size-xs);
}

/* --------------------------------------------------------------------------
   9. Breadcrumb
   -------------------------------------------------------------------------- */
.breadcrumb-nav {
  border-bottom: 1px solid var(--color-border);
  background: var(--color-off-white);
}
.breadcrumb-nav .container { padding-block: var(--space-3); }
.breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--font-size-sm);
  color: var(--color-charcoal-40);
}
.breadcrumb-list li { display: flex; align-items: center; gap: var(--space-2); }
.breadcrumb-list a { color: var(--color-charcoal-60); }
.breadcrumb-list a:hover { color: var(--color-red); }
.breadcrumb-sep { opacity: .4; font-size: var(--font-size-xs); }
.breadcrumb-list [aria-current="page"] { color: var(--color-charcoal); font-weight: 600; }

/* --------------------------------------------------------------------------
   10. Anchor Nav ("Dans cette page")
   -------------------------------------------------------------------------- */
.anchor-nav {
  position: sticky;
  top: var(--header-height);
  z-index: 200;
  background: var(--color-white);
  border-bottom: 2px solid var(--color-border);
  box-shadow: var(--shadow-sm);
}
.anchor-nav-inner {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  overflow-x: auto;
  scrollbar-width: none;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-pad);
  height: 52px;
}
.anchor-nav-inner::-webkit-scrollbar { display: none; }
.anchor-nav-label {
  font-family: var(--font-heading);
  font-size: var(--font-size-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--color-charcoal-40);
  white-space: nowrap;
  flex-shrink: 0;
}
.anchor-nav-links { display: flex; gap: var(--space-1); flex-shrink: 0; }
.anchor-link {
  display: block;
  padding: var(--space-2) var(--space-3);
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-charcoal-60);
  border-radius: var(--radius-sm);
  white-space: nowrap;
  transition: color var(--transition-fast), background var(--transition-fast);
}
.anchor-link:hover, .anchor-link.is-active {
  color: var(--color-red);
  background: var(--color-red-bg);
}

/* --------------------------------------------------------------------------
   11. Stats Bar
   -------------------------------------------------------------------------- */
.stats-bar {
  background: var(--color-red);
  color: var(--color-white);
  padding-block: var(--space-8);
  position: relative;
}

.stats-list {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-4);
}

.stats-item {
  text-align: center;
  padding: var(--space-5) var(--space-4);
  position: relative;
}
.stats-item::after {
  content: '';
  position: absolute;
  right: 0; top: 20%; bottom: 20%;
  width: 1px;
  background: rgba(255,255,255,.2);
}
.stats-item:last-child::after { display: none; }

.stats-value {
  display: block;
  font-family: var(--font-heading);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  line-height: 1;
  margin-bottom: var(--space-2);
  letter-spacing: -.02em;
}

.stats-label {
  display: block;
  font-size: var(--font-size-sm);
  opacity: .85;
  font-weight: 500;
}

/* Stat cards (about page sidebar) */
.stats-sidebar {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
  align-content: start;
}
.stat-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  text-align: center;
  border: 1px solid var(--color-border);
  border-top: 3px solid var(--color-red);
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}
.stat-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.stat-card-value {
  display: block;
  font-family: var(--font-heading);
  font-size: var(--font-size-3xl);
  font-weight: 800;
  color: var(--color-red);
  margin-bottom: var(--space-1);
  letter-spacing: -.02em;
}
.stat-card-label { font-size: var(--font-size-sm); color: var(--color-charcoal-60); }

/* --------------------------------------------------------------------------
   12. Program Cards
   -------------------------------------------------------------------------- */
.programs-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.program-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-top: 3px solid transparent;
  border-radius: var(--radius-lg);
  padding: var(--space-7, 1.75rem);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  transition:
    box-shadow var(--transition-base),
    transform var(--transition-base),
    border-color var(--transition-base),
    border-top-color var(--transition-base);
}
.program-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
  border-color: var(--color-border);
  border-top-color: var(--color-red);
}

.program-card-icon {
  width: 56px; height: 56px;
  background: var(--color-red-bg);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-red);
  transition: background var(--transition-fast);
}
.program-card:hover .program-card-icon { background: var(--color-red-bg-md); }

.program-card-domain {
  display: inline-block;
  font-family: var(--font-heading);
  font-size: var(--font-size-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .07em;
  color: var(--color-red);
  background: var(--color-red-bg);
  border-radius: var(--radius-pill);
  padding: .25em .85em;
}

.program-card-title {
  font-family: var(--font-heading);
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--color-charcoal);
  flex: 1;
  line-height: 1.3;
}

.program-card-accroche {
  font-size: var(--font-size-sm);
  color: var(--color-charcoal-60);
  line-height: 1.65;
}

.program-card-badges {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: auto;
}
.program-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--font-size-xs);
  font-weight: 600;
  color: var(--color-charcoal-60);
  background: var(--color-light-grey);
  border-radius: var(--radius-pill);
  padding: .28em .85em;
}

.program-card-cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-heading);
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: var(--color-red);
  transition: gap var(--transition-fast);
}
.program-card-cta:hover { gap: var(--space-3); }

/* --------------------------------------------------------------------------
   13. News Cards
   -------------------------------------------------------------------------- */
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.news-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}
.news-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-3px); }

.news-card-img {
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--color-light-grey);
}
.news-card-img img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}
.news-card:hover .news-card-img img { transform: scale(1.05); }
.news-card-img--placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-charcoal-40);
}

.news-card-body {
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  flex: 1;
}
.news-card-meta { display: flex; align-items: center; gap: var(--space-3); }
.news-card-cat {
  font-family: var(--font-heading);
  font-size: var(--font-size-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .07em;
  color: var(--color-red);
  background: var(--color-red-bg);
  border-radius: var(--radius-pill);
  padding: .2em .75em;
}
.news-card-date {
  font-size: var(--font-size-xs);
  color: var(--color-charcoal-40);
}
.news-card-title {
  font-family: var(--font-heading);
  font-size: var(--font-size-lg);
  font-weight: 700;
  flex: 1;
  line-height: 1.35;
}
.news-card-link { color: var(--color-charcoal); }
.news-card-link:hover { color: var(--color-red); }
.news-card-excerpt {
  font-size: var(--font-size-sm);
  color: var(--color-charcoal-60);
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  display: -webkit-box;
  line-height: 1.65;
}
.link-arrow {
  font-family: var(--font-heading);
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: var(--color-red);
  margin-top: auto;
  display: flex;
  align-items: center;
  gap: var(--space-1);
  transition: gap var(--transition-fast);
}
.link-arrow:hover { gap: var(--space-2); }

/* --------------------------------------------------------------------------
   14. CTA Block
   -------------------------------------------------------------------------- */
.cta-block { padding-block: var(--space-20); position: relative; overflow: hidden; }

.cta-block--red {
  background: var(--color-red);
  color: var(--color-white);
}

/* Geometric decorative element on red CTA */
.cta-block--red::before {
  content: '';
  position: absolute;
  top: -40%;
  right: -5%;
  width: 420px; height: 420px;
  border-radius: 50%;
  background: rgba(255,255,255,.04);
  pointer-events: none;
}
.cta-block--red::after {
  content: '';
  position: absolute;
  bottom: -60%;
  right: 15%;
  width: 280px; height: 280px;
  border-radius: 50%;
  background: rgba(255,255,255,.03);
  pointer-events: none;
}

.cta-block--dark  { background: var(--color-charcoal); color: var(--color-white); }
.cta-block--light { background: var(--color-off-white); color: var(--color-charcoal); }

.cta-block-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-10);
  flex-wrap: wrap;
  position: relative;
  z-index: 1;
}

.cta-block-title {
  font-family: var(--font-heading);
  font-size: clamp(var(--font-size-2xl), 3vw, var(--font-size-4xl));
  font-weight: 800;
  margin-bottom: var(--space-3);
  line-height: 1.2;
}
.cta-block-desc { font-size: var(--font-size-lg); opacity: .9; line-height: 1.6; }
.cta-block-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  flex-shrink: 0;
}

/* --------------------------------------------------------------------------
   15. Partners Section
   -------------------------------------------------------------------------- */
.partners-section {
  background: var(--color-white);
  border-top: 1px solid var(--color-border);
  padding-block: var(--space-12);
}
.partners-label {
  text-align: center;
  font-family: var(--font-heading);
  font-size: var(--font-size-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .12em;
  color: var(--color-charcoal-40);
  margin-bottom: var(--space-8);
}
.partners-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: var(--space-8);
}
.partner-item { opacity: .55; transition: opacity var(--transition-fast); }
.partner-item:hover { opacity: 1; }
.partner-item img { height: 48px; width: auto; }
.partner-name-text {
  font-family: var(--font-heading);
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: var(--color-charcoal-40);
  letter-spacing: .03em;
}

/* --------------------------------------------------------------------------
   16. Intro Banner (Homepage)
   -------------------------------------------------------------------------- */
.intro-banner {
  background: var(--color-charcoal);
  color: var(--color-white);
  padding-block: var(--space-20);
  position: relative;
  overflow: hidden;
}
.intro-banner::before {
  content: '';
  position: absolute;
  top: 0; right: 0;
  width: 50%;
  height: 100%;
  background: linear-gradient(135deg, transparent 30%, rgba(200,16,46,.08) 100%);
  pointer-events: none;
}
.intro-banner-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
  position: relative;
  z-index: 1;
}
.intro-banner-title {
  font-family: var(--font-heading);
  font-size: clamp(var(--font-size-2xl), 3.5vw, var(--font-size-4xl));
  font-weight: 800;
  margin-bottom: var(--space-5);
  line-height: 1.2;
}
.intro-banner-text p {
  font-size: var(--font-size-lg);
  opacity: .82;
  margin-bottom: var(--space-8);
  line-height: 1.75;
}
.intro-banner-visual img {
  border-radius: var(--radius-xl);
  width: 100%;
  object-fit: cover;
  aspect-ratio: 4/3;
  box-shadow: var(--shadow-xl);
}

/* --------------------------------------------------------------------------
   17. Why Choose Us (Homepage — new section)
   -------------------------------------------------------------------------- */
.why-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
}

.why-item {
  padding: var(--space-6);
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-top: 3px solid transparent;
  border-radius: var(--radius-lg);
  transition: box-shadow var(--transition-base), transform var(--transition-base), border-color var(--transition-base);
}
.why-item:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
  border-color: var(--color-border);
  border-top-color: var(--color-red);
}
.why-icon {
  width: 52px; height: 52px;
  background: var(--color-red-bg);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-red);
  margin-bottom: var(--space-4);
}
.why-title {
  font-family: var(--font-heading);
  font-size: var(--font-size-md);
  font-weight: 700;
  margin-bottom: var(--space-2);
  color: var(--color-charcoal);
}
.why-text {
  font-size: var(--font-size-sm);
  color: var(--color-charcoal-60);
  line-height: 1.65;
}

/* --------------------------------------------------------------------------
   18. Editorial Layout (2-col)
   -------------------------------------------------------------------------- */
.editorial-layout {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--space-12);
  align-items: start;
}
.editorial-text p {
  font-size: var(--font-size-lg);
  color: var(--color-charcoal-60);
  line-height: 1.8;
  margin-bottom: var(--space-5);
}

/* --------------------------------------------------------------------------
   19. Checklist
   -------------------------------------------------------------------------- */
.checklist {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-top: var(--space-6);
}
.checklist--two-col {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-3) var(--space-8);
}
.checklist-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  font-size: var(--font-size-md);
  color: var(--color-charcoal);
}
.checklist-icon { flex-shrink: 0; margin-top: .15em; color: var(--color-red); }

/* --------------------------------------------------------------------------
   20. Values Grid
   -------------------------------------------------------------------------- */
.values-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
}
.value-item {
  padding: var(--space-8) var(--space-6);
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  text-align: center;
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}
.value-item:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }
.value-icon {
  width: 68px; height: 68px;
  margin: 0 auto var(--space-5);
  background: var(--color-red-bg);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-red);
  transition: background var(--transition-fast);
}
.value-item:hover .value-icon { background: var(--color-red-bg-md); }
.value-title {
  font-family: var(--font-heading);
  font-size: var(--font-size-lg);
  font-weight: 700;
  margin-bottom: var(--space-3);
}
.value-text { font-size: var(--font-size-sm); color: var(--color-charcoal-60); line-height: 1.65; }

/* --------------------------------------------------------------------------
   21. Mission Grid
   -------------------------------------------------------------------------- */
.mission-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-6);
}
.mission-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-7, 1.75rem) var(--space-6);
  border-left: 4px solid var(--color-red);
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}
.mission-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.mission-card-title {
  font-family: var(--font-heading);
  font-size: var(--font-size-lg);
  font-weight: 700;
  margin-bottom: var(--space-3);
  color: var(--color-charcoal);
}

/* --------------------------------------------------------------------------
   22. Timeline
   -------------------------------------------------------------------------- */
.timeline {
  position: relative;
  max-width: 700px;
  padding-left: var(--space-10);
  border-left: 2px solid var(--color-red);
}
.timeline-item {
  position: relative;
  padding-bottom: var(--space-10);
}
.timeline-item::before {
  content: '';
  position: absolute;
  left: calc(-1 * var(--space-10) - 6px);
  top: 4px;
  width: 14px; height: 14px;
  border-radius: 50%;
  background: var(--color-red);
  border: 3px solid var(--color-white);
  box-shadow: 0 0 0 2px var(--color-red);
}
.timeline-year {
  font-family: var(--font-heading);
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: var(--color-red);
  margin-bottom: var(--space-1);
  display: block;
  letter-spacing: .02em;
}
.timeline-title {
  font-family: var(--font-heading);
  font-size: var(--font-size-lg);
  font-weight: 700;
  margin-bottom: var(--space-2);
}

/* --------------------------------------------------------------------------
   23. Tracks Grid (Admissions / Formations)
   -------------------------------------------------------------------------- */
.tracks-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}
.tracks-grid--2 { grid-template-columns: repeat(2, 1fr); }
.track-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}
.track-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.track-card-header {
  padding: var(--space-6);
  color: var(--color-white);
}
.track-card-header--red  { background: linear-gradient(135deg, var(--color-red) 0%, var(--color-red-dark) 100%); }
.track-card-header--dark { background: linear-gradient(135deg, var(--color-charcoal) 0%, var(--color-charcoal-90) 100%); }
.track-badge {
  display: inline-block;
  font-family: var(--font-heading);
  font-size: var(--font-size-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .07em;
  background: rgba(255,255,255,.18);
  border-radius: var(--radius-pill);
  padding: .25em .8em;
  margin-bottom: var(--space-3);
}
.track-level, .track-title {
  display: block;
  font-family: var(--font-heading);
  font-size: var(--font-size-xl);
  font-weight: 700;
}
.track-level-badge {
  display: block;
  font-size: var(--font-size-sm);
  opacity: .82;
  margin-top: var(--space-1);
}
.track-card-body {
  padding: var(--space-6);
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  background: var(--color-white);
}
.track-fields { font-size: var(--font-size-sm); color: var(--color-charcoal-60); }
.track-list { margin-top: var(--space-2); }
.track-list li {
  padding: var(--space-2) 0;
  font-size: var(--font-size-sm);
  color: var(--color-charcoal-60);
  border-bottom: 1px dotted var(--color-border);
}
.track-list li:last-child { border-bottom: none; }

/* --------------------------------------------------------------------------
   24. Steps List (Admissions procedure)
   -------------------------------------------------------------------------- */
.steps-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  max-width: 740px;
}
.step-item {
  display: flex;
  gap: var(--space-6);
  padding-bottom: var(--space-10);
  position: relative;
}
.step-item::before {
  content: '';
  position: absolute;
  left: 24px;
  top: 52px;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--color-red) 0%, var(--color-border) 100%);
}
.step-item:last-child::before { display: none; }
.step-num {
  flex-shrink: 0;
  width: 52px; height: 52px;
  border-radius: 50%;
  background: var(--color-red);
  color: var(--color-white);
  font-family: var(--font-heading);
  font-size: var(--font-size-lg);
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-red);
  flex-shrink: 0;
}
.step-title {
  font-family: var(--font-heading);
  font-size: var(--font-size-lg);
  font-weight: 700;
  margin-bottom: var(--space-2);
  padding-top: var(--space-3);
}
.step-desc { font-size: var(--font-size-md); color: var(--color-charcoal-60); line-height: 1.65; }

/* --------------------------------------------------------------------------
   25. Calendar list (Dates)
   -------------------------------------------------------------------------- */
.calendar-list { display: flex; flex-direction: column; gap: var(--space-3); max-width: 640px; }
.calendar-item {
  display: flex;
  align-items: center;
  gap: var(--space-5);
  padding: var(--space-4) var(--space-6);
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  border-left: 4px solid var(--color-red);
  transition: box-shadow var(--transition-fast), transform var(--transition-fast);
}
.calendar-item:hover { box-shadow: var(--shadow-sm); transform: translateX(4px); }
.calendar-date {
  min-width: 150px;
  font-family: var(--font-heading);
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: var(--color-red);
}
.calendar-event { font-size: var(--font-size-md); color: var(--color-charcoal); font-weight: 500; }

/* --------------------------------------------------------------------------
   26. Info Cards Grid
   -------------------------------------------------------------------------- */
.info-cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-5);
  margin-top: var(--space-8);
}
.info-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  border-top: 3px solid var(--color-red);
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}
.info-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.info-card-title {
  font-family: var(--font-heading);
  font-size: var(--font-size-md);
  font-weight: 700;
  margin-bottom: var(--space-3);
}

/* --------------------------------------------------------------------------
   27. FAQ Accordion
   -------------------------------------------------------------------------- */
.faq-list { display: flex; flex-direction: column; gap: var(--space-3); max-width: 820px; }
.faq-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: box-shadow var(--transition-fast);
}
.faq-item:has(.faq-question[aria-expanded="true"]) {
  border-color: var(--color-red);
  box-shadow: 0 0 0 3px var(--color-red-bg);
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-5);
  padding: var(--space-5) var(--space-6);
  font-family: var(--font-heading);
  font-size: var(--font-size-md);
  font-weight: 600;
  color: var(--color-charcoal);
  text-align: left;
  cursor: pointer;
  transition: background var(--transition-fast), color var(--transition-fast);
  line-height: 1.45;
}
.faq-question:hover { background: var(--color-off-white); }
.faq-question[aria-expanded="true"] {
  background: var(--color-off-white);
  color: var(--color-red);
}

.faq-arrow {
  flex-shrink: 0;
  color: var(--color-charcoal-40);
  transition: transform var(--transition-fast), color var(--transition-fast);
}
.faq-question:hover .faq-arrow { color: var(--color-red); }
.faq-question[aria-expanded="true"] .faq-arrow { transform: rotate(180deg); color: var(--color-red); }

.faq-answer {
  padding: 0 var(--space-6) var(--space-6);
  font-size: var(--font-size-md);
  color: var(--color-charcoal-60);
  line-height: 1.75;
}
.faq-answer[hidden] { display: none; }

/* --------------------------------------------------------------------------
   28. News Filter
   -------------------------------------------------------------------------- */
.news-filter {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-8);
}
.news-filter-btn {
  padding: .45em 1.3em;
  font-family: var(--font-heading);
  font-size: var(--font-size-sm);
  font-weight: 600;
  border-radius: var(--radius-pill);
  border: 2px solid var(--color-border);
  color: var(--color-charcoal-60);
  background: var(--color-white);
  transition:
    background var(--transition-fast),
    color var(--transition-fast),
    border-color var(--transition-fast);
}
.news-filter-btn:hover { border-color: var(--color-red); color: var(--color-red); }
.news-filter-btn.is-active {
  background: var(--color-red);
  color: var(--color-white);
  border-color: var(--color-red);
  box-shadow: var(--shadow-red);
}

/* --------------------------------------------------------------------------
   29. Contact Layout
   -------------------------------------------------------------------------- */
.contact-layout {
  display: grid;
  grid-template-columns: 3fr 2fr;
  gap: var(--space-12);
  align-items: start;
}

.contact-info-block {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
  margin-bottom: var(--space-6);
}
.contact-info-item {
  display: flex;
  gap: var(--space-4);
  align-items: flex-start;
}
.contact-info-item svg { flex-shrink: 0; margin-top: .15em; color: var(--color-red); }
.contact-info-item strong { display: block; font-weight: 700; margin-bottom: var(--space-1); }
.contact-info-item a:hover { color: var(--color-red); }

.contact-social { margin-top: var(--space-6); }
.contact-social strong { display: block; margin-bottom: var(--space-3); font-weight: 700; }

/* --------------------------------------------------------------------------
   30. Forms
   -------------------------------------------------------------------------- */
.contact-form { display: flex; flex-direction: column; gap: var(--space-5); }
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-5);
}
.form-group { display: flex; flex-direction: column; gap: var(--space-2); }
.form-label {
  font-family: var(--font-heading);
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-charcoal);
}
.form-label span { color: var(--color-red); }

.form-input, .form-select, .form-textarea {
  padding: .75em 1.1em;
  font-size: var(--font-size-md);
  color: var(--color-charcoal);
  background: var(--color-white);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  outline: none;
  min-height: 48px;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  width: 100%;
}
.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--color-charcoal-40);
}
.form-input:hover, .form-select:hover, .form-textarea:hover {
  border-color: var(--color-charcoal-40);
}
.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: var(--color-red);
  box-shadow: 0 0 0 4px var(--color-red-bg);
}
.form-textarea { resize: vertical; min-height: 160px; }
.form-note { font-size: var(--font-size-xs); color: var(--color-charcoal-40); }

/* Alert messages */
.alert {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-weight: 600;
  margin-bottom: var(--space-5);
}
.alert--success { background: #ecfdf5; color: #065f46; border: 1px solid #a7f3d0; }
.alert--error   { background: #fef2f2; color: #991b1b; border: 1px solid #fecaca; }

/* --------------------------------------------------------------------------
   31. Empty State
   -------------------------------------------------------------------------- */
.empty-state {
  text-align: center;
  padding: var(--space-20) var(--space-8);
  color: var(--color-charcoal-40);
}
.empty-state-note { font-size: var(--font-size-sm); margin-top: var(--space-2); }

/* --------------------------------------------------------------------------
   32. Pre-footer
   -------------------------------------------------------------------------- */
.pre-footer {
  background: var(--color-charcoal-90);
  color: var(--color-white);
  padding-block: var(--space-12);
  border-top: 4px solid var(--color-red);
}
.pre-footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-8);
  flex-wrap: wrap;
}
.pre-footer-title {
  font-family: var(--font-heading);
  font-size: clamp(var(--font-size-xl), 2.5vw, var(--font-size-3xl));
  font-weight: 700;
  margin-bottom: var(--space-2);
}
.pre-footer-text      { }
.pre-footer-text-sub  { font-size: var(--font-size-md); opacity: .7; margin-top: var(--space-2); }
.pre-footer-actions { display: flex; gap: var(--space-3); flex-wrap: wrap; flex-shrink: 0; }

/* --------------------------------------------------------------------------
   33. Footer
   -------------------------------------------------------------------------- */
.site-footer {
  background: var(--color-footer-bg);
  color: var(--color-white);
}

.footer-main { padding-block: var(--space-16); }

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-10);
}

.footer-logo { display: inline-block; margin-bottom: var(--space-5); }
.footer-logo img { height: 38px; }

.footer-tagline {
  font-size: var(--font-size-sm);
  color: rgba(255,255,255,.55);
  margin-bottom: var(--space-6);
  line-height: 1.7;
  max-width: 280px;
}

.footer-contact { font-style: normal; display: flex; flex-direction: column; gap: var(--space-3); }
.footer-address, .footer-phone, .footer-email {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  font-size: var(--font-size-sm);
  color: rgba(255,255,255,.65);
  line-height: 1.55;
}
.footer-contact svg { flex-shrink: 0; margin-top: .15em; opacity: .6; }
.footer-contact a { color: rgba(255,255,255,.65); }
.footer-contact a:hover { color: var(--color-red); }

.footer-social {
  display: flex;
  gap: var(--space-2);
  margin-top: var(--space-6);
}
.social-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px; height: 38px;
  border-radius: var(--radius-md);
  background: rgba(255,255,255,.08);
  color: rgba(255,255,255,.75);
  transition: background var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
}
.social-icon:hover { background: var(--color-red); color: var(--color-white); transform: translateY(-2px); }

.footer-col-title {
  font-family: var(--font-heading);
  font-size: var(--font-size-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .12em;
  color: rgba(255,255,255,.35);
  margin-bottom: var(--space-5);
}
.footer-links { display: flex; flex-direction: column; gap: var(--space-3); }
.footer-link {
  font-size: var(--font-size-sm);
  color: rgba(255,255,255,.65);
  transition: color var(--transition-fast), padding-left var(--transition-fast);
}
.footer-link:hover { color: var(--color-white); padding-left: var(--space-1); }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.07);
  padding-block: var(--space-5);
}
.footer-bottom-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-4);
}
.footer-copy { font-size: var(--font-size-sm); color: rgba(255,255,255,.35); }
.footer-legal-links { display: flex; flex-wrap: wrap; gap: var(--space-5); }
.footer-legal-link {
  font-size: var(--font-size-sm);
  color: rgba(255,255,255,.35);
  transition: color var(--transition-fast);
}
.footer-legal-link:hover { color: rgba(255,255,255,.75); }

/* --------------------------------------------------------------------------
   34. Back to Top
   -------------------------------------------------------------------------- */
.back-to-top {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  z-index: 300;
  width: 46px; height: 46px;
  border-radius: var(--radius-md);
  background: var(--color-charcoal);
  color: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  transform: translateY(16px);
  transition: opacity var(--transition-base), transform var(--transition-base), background var(--transition-fast);
  pointer-events: none;
}
.back-to-top.is-visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}
.back-to-top:hover { background: var(--color-red); }

/* --------------------------------------------------------------------------
   35. Accreditations Grid
   -------------------------------------------------------------------------- */
.accred-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
  margin-top: var(--space-6);
}
.accred-card {
  background: var(--color-off-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  border-top: 3px solid var(--color-red);
  transition: box-shadow var(--transition-base);
}
.accred-card:hover { box-shadow: var(--shadow-md); }
.accred-card-title {
  font-family: var(--font-heading);
  font-size: var(--font-size-md);
  font-weight: 700;
  margin-bottom: var(--space-3);
}

/* --------------------------------------------------------------------------
   36. Reveal Animations (only hide when JS is present)
   -------------------------------------------------------------------------- */
.js .reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.55s cubic-bezier(.4,0,.2,1), transform 0.55s cubic-bezier(.4,0,.2,1);
}
.js .reveal.reveal-left  { transform: translateX(-24px); }
.js .reveal.reveal-right { transform: translateX(24px); }
.js .reveal.is-visible {
  opacity: 1;
  transform: none;
}

/* Counter number highlight */
.stats-value[data-counter] { transition: color var(--transition-fast); }

/* --------------------------------------------------------------------------
   37. Responsive — Tablet (≤900px)
   -------------------------------------------------------------------------- */
@media (max-width: 900px) {
  .main-nav, .header-actions .btn { display: none; }
  .burger-btn { display: flex; }

  .stats-list { grid-template-columns: repeat(2, 1fr); }
  .stats-item:nth-child(2) .stats-item::after { display: none; }

  .programs-grid { grid-template-columns: repeat(2, 1fr); }
  .news-grid     { grid-template-columns: repeat(2, 1fr); }
  .why-grid      { grid-template-columns: repeat(2, 1fr); }
  .tracks-grid   { grid-template-columns: repeat(2, 1fr); }
  .values-grid   { grid-template-columns: repeat(2, 1fr); }

  .editorial-layout { grid-template-columns: 1fr; }
  .stats-sidebar { grid-template-columns: repeat(4, 1fr); }

  .intro-banner-inner { grid-template-columns: 1fr; }
  .intro-banner-visual { display: none; }

  .contact-layout { grid-template-columns: 1fr; }

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

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

  .pre-footer-inner { flex-direction: column; gap: var(--space-6); }
}

/* --------------------------------------------------------------------------
   38. Responsive — Mobile (≤640px)
   -------------------------------------------------------------------------- */
@media (max-width: 640px) {
  :root {
    --header-height: 64px;
  }

  .section { padding-block: var(--space-12); }

  .hero--xl { min-height: max(440px, 80vh); }
  .hero--md { min-height: min(48vh, 380px); }
  .hero--sm { min-height: min(30vh, 240px); }

  .hero-inner {
    padding-top: var(--space-16);
    padding-bottom: calc(var(--space-16) + 32px);
  }

  .stats-list { grid-template-columns: repeat(2, 1fr); }
  .stats-item::after { display: none; }
  .stats-item { border-bottom: 1px solid rgba(255,255,255,.12); }
  .stats-item:nth-child(3),
  .stats-item:nth-child(4) { border-bottom: none; }

  .programs-grid { grid-template-columns: 1fr; }
  .news-grid     { grid-template-columns: 1fr; }
  .tracks-grid   { grid-template-columns: 1fr; }
  .why-grid      { grid-template-columns: 1fr; }
  .values-grid   { grid-template-columns: 1fr 1fr; }

  .cta-block-inner { flex-direction: column; align-items: flex-start; gap: var(--space-6); }

  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom-inner { flex-direction: column; align-items: flex-start; }

  .form-row { grid-template-columns: 1fr; }
  .checklist--two-col { grid-template-columns: 1fr; }

  .steps-list { gap: 0; }
  .step-item { gap: var(--space-4); }
  .step-item::before { left: 26px; }

  .anchor-nav-label { display: none; }

  .info-cards-grid { grid-template-columns: 1fr; }
  .accred-grid { grid-template-columns: 1fr; }
  .mission-grid { grid-template-columns: 1fr; }
  .stats-sidebar { grid-template-columns: repeat(2, 1fr); }

  .section-title-block { margin-bottom: var(--space-8); }
}

/* --------------------------------------------------------------------------
   39. Focus Styles (Accessibility)
   -------------------------------------------------------------------------- */
:focus-visible {
  outline: 3px solid var(--color-red);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* --------------------------------------------------------------------------
   40. Error Pages (404, 403)
   -------------------------------------------------------------------------- */
.error-page {
  padding-block: var(--space-24);
  min-height: 60vh;
  display: flex;
  align-items: center;
}

.error-page-inner {
  max-width: 600px;
  margin-inline: auto;
  text-align: center;
}

.error-code {
  font-family: var(--font-heading);
  font-size: clamp(5rem, 15vw, 9rem);
  font-weight: 800;
  color: var(--color-red);
  line-height: 1;
  opacity: .12;
  margin-bottom: var(--space-4);
  letter-spacing: -.04em;
}

.error-title {
  font-size: clamp(var(--font-size-2xl), 4vw, var(--font-size-4xl));
  font-weight: 800;
  margin-bottom: var(--space-4);
  margin-top: calc(var(--space-4) * -4);
}

.error-text {
  font-size: var(--font-size-lg);
  color: var(--color-charcoal-60);
  line-height: 1.7;
  margin-bottom: var(--space-10);
}

.error-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  justify-content: center;
}

/* --------------------------------------------------------------------------
   41. Print
   -------------------------------------------------------------------------- */
@media print {
  .site-header, .anchor-nav, .back-to-top, .cta-block,
  .pre-footer, .site-footer { display: none !important; }
  body { font-size: 12pt; color: #000; }
  a[href]::after { content: " (" attr(href) ")"; font-size: .85em; }
}