/* ============================================================
   AI Integration Masterclass — Style Sheet
   Dark-first, Arabic RTL, futuristic tech aesthetic
   ============================================================ */

/* ── DESIGN TOKENS ─────────────────────────────────────────── */
:root {
  --text-xs:   clamp(0.75rem,  0.7rem  + 0.25vw, 0.875rem);
  --text-sm:   clamp(0.875rem, 0.8rem  + 0.35vw, 1rem);
  --text-base: clamp(1rem,     0.95rem + 0.25vw, 1.125rem);
  --text-lg:   clamp(1.125rem, 1rem    + 0.75vw, 1.5rem);
  --text-xl:   clamp(1.5rem,   1.2rem  + 1.25vw, 2.25rem);
  --text-2xl:  clamp(2rem,     1.2rem  + 2.5vw,  3.5rem);
  --text-3xl:  clamp(2.5rem,   1rem    + 4vw,    5rem);
  --text-hero: clamp(3rem,     0.5rem  + 7vw,    8rem);

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

  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;

  --transition: 200ms cubic-bezier(0.16, 1, 0.3, 1);

  /* Custom AI Palette — deep space + electric accents */
  --color-bg:          #08090d;
  --color-surface:     #0d0f17;
  --color-surface-2:   #12151f;
  --color-surface-3:   #171b26;
  --color-border:      #1e2235;
  --color-divider:     #252b3a;

  --color-text:        #e8eaf0;
  --color-text-muted:  #8b91a8;
  --color-text-faint:  #4a5068;

  --color-primary:     #a855f7;   /* purple */
  --color-primary-dim: #7c3aed;
  --color-accent:      #06b6d4;   /* cyan */
  --color-accent-dim:  #0891b2;
  --color-gold:        #f59e0b;

  --grad-primary: linear-gradient(135deg, #a855f7, #06b6d4);
  --grad-glow:    linear-gradient(135deg, rgba(168,85,247,0.2), rgba(6,182,212,0.2));
  --grad-card:    linear-gradient(135deg, rgba(168,85,247,0.08), rgba(6,182,212,0.04));

  --shadow-glow-purple: 0 0 40px rgba(168,85,247,0.3);
  --shadow-glow-cyan:   0 0 40px rgba(6,182,212,0.3);
  --shadow-card:        0 4px 24px rgba(0,0,0,0.4);

  --content-narrow:  640px;
  --content-default: 1000px;
  --content-wide:    1280px;

  --font-display: 'Clash Display', 'Cairo', sans-serif;
  --font-body:    'Cairo', 'Satoshi', sans-serif;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--space-20);
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text);
  background: var(--color-bg);
  min-height: 100dvh;
  overflow-x: hidden;
  line-height: 1.7;
}

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

h1, h2, h3, h4 {
  font-family: var(--font-display);
  text-wrap: balance;
  line-height: 1.2;
}

p { text-wrap: pretty; }

::selection {
  background: rgba(168,85,247,0.3);
  color: #fff;
}

/* ── LAYOUT HELPERS ─────────────────────────────────────────── */
.container {
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: clamp(var(--space-5), 5vw, var(--space-16));
}

.section {
  padding-block: clamp(var(--space-16), 10vw, var(--space-32));
}

/* ── REVEAL ANIMATIONS ─────────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.7s cubic-bezier(0.16,1,0.3,1), transform 0.7s cubic-bezier(0.16,1,0.3,1);
}

@media (max-width: 768px) {
  .reveal {
    transform: translateY(18px);
    transition: opacity 0.5s ease, transform 0.5s ease;
  }
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}
[data-delay="100"] { transition-delay: 0.1s; }
[data-delay="200"] { transition-delay: 0.2s; }
[data-delay="300"] { transition-delay: 0.3s; }

/* ── SECTION HEADER ─────────────────────────────────────────── */
.section-header {
  text-align: center;
  margin-bottom: clamp(var(--space-12), 6vw, var(--space-20));
}

.section-header h2 {
  font-size: var(--text-2xl);
  font-weight: 700;
  margin-bottom: var(--space-4);
}

.section-sub {
  color: var(--color-text-muted);
  max-width: 680px;
  margin-inline: auto;
  font-size: var(--text-lg);
}

.eyebrow {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-accent);
  background: rgba(6,182,212,0.1);
  border: 1px solid rgba(6,182,212,0.2);
  padding: var(--space-1) var(--space-4);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-4);
}

/* ── HEADER ─────────────────────────────────────────────────── */
.header {
  position: fixed;
  top: 0;
  inset-inline: 0;
  z-index: 100;
  background: rgba(8,9,13,0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border);
  transition: var(--transition);
}

.header-inner {
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: clamp(var(--space-5), 5vw, var(--space-16));
  height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-8);
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
}

.logo-icon { width: 36px; height: 36px; }

.logo-text {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-text);
}

.logo-accent {
  background: var(--grad-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.nav a {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  transition: color var(--transition);
}

.nav a:hover { color: var(--color-text); }

.btn-nav {
  background: var(--grad-primary);
  color: #fff !important;
  padding: var(--space-2) var(--space-5);
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: var(--text-sm) !important;
  transition: opacity var(--transition), transform var(--transition) !important;
}

.btn-nav:hover {
  opacity: 0.9;
  transform: translateY(-1px);
}

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

.menu-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: var(--transition);
}

/* ── HERO ───────────────────────────────────────────────────── */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding-top: 100px;
  padding-bottom: var(--space-16);
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.grid-overlay {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(30,34,53,0.5) 1px, transparent 1px),
    linear-gradient(90deg, rgba(30,34,53,0.5) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 40%, transparent 100%);
}

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
}

.hero .orb-1 {
  width: 600px; height: 600px;
  top: -200px; right: -100px;
  background: rgba(168,85,247,0.15);
  animation: orb-float 8s ease-in-out infinite;
}

.hero .orb-2 {
  width: 500px; height: 500px;
  bottom: -150px; left: -100px;
  background: rgba(6,182,212,0.12);
  animation: orb-float 10s ease-in-out infinite reverse;
}

.hero .orb-3 {
  width: 300px; height: 300px;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  background: rgba(168,85,247,0.06);
  animation: orb-pulse 6s ease-in-out infinite;
}

@keyframes orb-float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-40px); }
}

@keyframes orb-pulse {
  0%, 100% { transform: translate(-50%, -50%) scale(1); opacity: 0.6; }
  50% { transform: translate(-50%, -50%) scale(1.3); opacity: 1; }
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-6);
}

.hero-kicker {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 500;
  letter-spacing: 0.06em;
  background: var(--grad-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  position: relative;
  display: inline-block;
  padding-bottom: var(--space-2);
}

.hero-kicker::after {
  content: '';
  position: absolute;
  bottom: 0;
  right: 0;
  left: 0;
  height: 1px;
  background: var(--grad-primary);
  opacity: 0.4;
}

.badge-pill {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--color-text-muted);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  padding: var(--space-2) var(--space-5);
  border-radius: var(--radius-full);
}

.badge-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--color-accent);
  box-shadow: 0 0 8px var(--color-accent);
  animation: dot-pulse 2s ease-in-out infinite;
}

@keyframes dot-pulse {
  0%, 100% { box-shadow: 0 0 4px var(--color-accent); }
  50% { box-shadow: 0 0 14px var(--color-accent); }
}

.hero-title {
  font-size: var(--text-hero);
  font-weight: 700;
  line-height: 1.1;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  text-shadow: 0 0 60px rgba(168,85,247,0.15);
}

.hero-title .line-1,
.hero-title .line-3 {
  color: #ffffff;
  filter: drop-shadow(0 0 24px rgba(255,255,255,0.12));
}

.line-gradient {
  background: var(--grad-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  filter: drop-shadow(0 0 30px rgba(168,85,247,0.5));
}

.hero-sub {
  max-width: 720px;
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  line-height: 1.7;
}

.hero-sub strong {
  color: var(--color-text);
}

.hero-cta {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
  justify-content: center;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  background: var(--grad-primary);
  color: #fff;
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 700;
  padding: var(--space-4) var(--space-8);
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-glow-purple);
  transition: transform var(--transition), box-shadow var(--transition);
}

.btn-primary svg { width: 20px; height: 20px; }

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 0 60px rgba(168,85,247,0.5);
}

.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-text-muted);
  font-size: var(--text-base);
  font-weight: 500;
  border: 1px solid var(--color-border);
  padding: var(--space-4) var(--space-6);
  border-radius: var(--radius-full);
  transition: color var(--transition), border-color var(--transition);
}

.btn-ghost svg { width: 18px; height: 18px; }

.btn-ghost:hover {
  color: var(--color-text);
  border-color: var(--color-primary);
}

.hero-stats {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  padding: var(--space-5) var(--space-8);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-2xl);
  margin-top: var(--space-4);
}

.stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-1);
}

.stat-num {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 700;
  background: var(--grad-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  text-align: center;
}

.stat-divider {
  width: 1px;
  height: 40px;
  background: var(--color-border);
}

.hero-scroll-indicator {
  position: absolute;
  bottom: var(--space-8);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.scroll-line {
  width: 2px;
  height: 50px;
  background: linear-gradient(to bottom, var(--color-primary), transparent);
  animation: scroll-anim 2s ease-in-out infinite;
}

@keyframes scroll-anim {
  0% { opacity: 1; transform: scaleY(1) translateY(0); }
  100% { opacity: 0; transform: scaleY(0.5) translateY(20px); }
}

/* ── ABOUT ──────────────────────────────────────────────────── */
.about { background: var(--color-surface); }

.triangle-concept {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: var(--space-16);
  align-items: center;
}

.triangle-visual {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
}

.tri-node {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  text-align: center;
  max-width: 260px;
  width: 100%;
}

.tri-node.tri-top { border-top: 2px solid var(--color-primary); }
.tri-node.tri-bottom { border-top: 2px solid var(--color-accent); }

.tri-icon {
  width: 48px; height: 48px;
  background: var(--grad-glow);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-3);
}

.tri-icon svg { width: 24px; height: 24px; color: var(--color-primary); }

.tri-node span {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  display: block;
  margin-bottom: var(--space-2);
}

.tri-node p { font-size: var(--text-sm); color: var(--color-text-muted); }

.tri-bridge {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
  padding: var(--space-3) 0;
}

.bridge-line {
  width: 2px;
  height: 30px;
  background: linear-gradient(to bottom, var(--color-primary), var(--color-accent));
}

.bridge-center {
  background: var(--grad-primary);
  color: #fff;
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-lg);
  text-align: center;
  font-size: var(--text-xs);
  font-weight: 700;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-1);
}

.bridge-center svg { width: 20px; height: 20px; }

.triangle-text h3 {
  font-size: var(--text-xl);
  font-weight: 700;
  margin-bottom: var(--space-5);
  line-height: 1.3;
}

.triangle-text > p {
  color: var(--color-text-muted);
  margin-bottom: var(--space-6);
  font-size: var(--text-lg);
}

.about-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.about-list li {
  display: flex;
  gap: var(--space-4);
  align-items: flex-start;
}

.list-icon {
  font-size: 1.2rem;
  color: var(--color-primary);
  flex-shrink: 0;
  margin-top: 2px;
}

.about-list strong {
  display: block;
  margin-bottom: var(--space-1);
  font-size: var(--text-base);
}

.about-list p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* ── FOUNDATIONS ────────────────────────────────────────────── */
.foundations-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-5);
}

.found-card--wide {
  grid-column: 1 / -1;
}

.found-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  position: relative;
  overflow: hidden;
  transition: border-color var(--transition), transform var(--transition);
}

.found-card:hover {
  border-color: rgba(168,85,247,0.4);
  transform: translateY(-4px);
}

.found-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--grad-card);
  opacity: 0;
  transition: opacity var(--transition);
}

.found-card:hover::before { opacity: 1; }

.found-num {
  position: absolute;
  top: var(--space-5);
  left: var(--space-6);
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 700;
  color: var(--color-border);
  line-height: 1;
}

.found-icon {
  width: 52px; height: 52px;
  background: var(--grad-glow);
  border: 1px solid rgba(168,85,247,0.2);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-4);
  position: relative;
  z-index: 1;
  margin-top: var(--space-8);
}

.found-icon svg { width: 26px; height: 26px; color: var(--color-primary); }

.found-card h3 {
  font-size: var(--text-base);
  font-weight: 700;
  margin-bottom: var(--space-3);
  position: relative;
  z-index: 1;
}

.found-card p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  position: relative;
  z-index: 1;
}

.found-card--wide {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: var(--space-8);
}

.found-card--wide .found-num { position: static; }
.found-card--wide .found-icon { margin-top: 0; }

.chess-visual {
  display: flex;
  gap: var(--space-2);
  font-size: 2rem;
  color: var(--color-text-muted);
  filter: drop-shadow(0 0 8px rgba(168,85,247,0.4));
}

/* ── CURRICULUM ─────────────────────────────────────────────── */
.curriculum { background: var(--color-surface); }

.curriculum-track {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.track-phase {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: var(--space-8);
  align-items: stretch;
}

.phase-marker {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
}

.phase-num {
  width: 48px; height: 48px;
  background: var(--grad-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 700;
  color: #fff;
  flex-shrink: 0;
}

.phase-line {
  width: 2px;
  flex: 1;
  min-height: 40px;
  background: linear-gradient(to bottom, var(--color-primary), transparent);
  margin-top: var(--space-2);
}

.phase-content {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  margin-bottom: var(--space-5);
  transition: border-color var(--transition);
}

.phase-content:hover { border-color: rgba(168,85,247,0.3); }

.phase-label {
  font-size: var(--text-xs);
  color: var(--color-accent);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  display: block;
  margin-bottom: var(--space-2);
}

.phase-content h3 {
  font-size: var(--text-xl);
  font-weight: 700;
  margin-bottom: var(--space-5);
}

.phase-items {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.phase-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  padding: var(--space-2) 0;
  border-bottom: 1px solid var(--color-divider);
}

.phase-item:last-child { border-bottom: none; }

.phase-item::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-primary);
  flex-shrink: 0;
}

/* ── PROJECTS ───────────────────────────────────────────────── */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-5);
}

.project-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
  position: relative;
  overflow: hidden;
}

.project-card::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 3px;
  background: var(--grad-primary);
  transform: scaleX(0);
  transition: transform var(--transition);
  transform-origin: right;
}

.project-card:hover {
  transform: translateY(-6px);
  border-color: rgba(168,85,247,0.3);
  box-shadow: var(--shadow-card);
}

.project-card:hover::after { transform: scaleX(1); }

.project-card--featured {
  grid-column: 1 / 3;
  background: linear-gradient(135deg, var(--color-surface) 0%, rgba(168,85,247,0.05) 100%);
  border-color: rgba(168,85,247,0.2);
}

.project-card--highlight {
  grid-column: 1 / 3;
  background: linear-gradient(135deg, var(--color-surface) 0%, rgba(6,182,212,0.05) 100%);
  border-color: rgba(6,182,212,0.3);
  border-width: 2px;
}

.project-tag {
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-accent);
  margin-bottom: var(--space-3);
  display: block;
}

.project-card h3 {
  font-size: var(--text-lg);
  font-weight: 700;
  margin-bottom: var(--space-3);
}

.project-card p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
  line-height: 1.7;
}

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

.project-techs span {
  font-size: var(--text-xs);
  color: var(--color-primary);
  background: rgba(168,85,247,0.1);
  border: 1px solid rgba(168,85,247,0.2);
  padding: 3px var(--space-3);
  border-radius: var(--radius-full);
}

/* ── AUTOMATION ─────────────────────────────────────────────── */
.automation { background: var(--color-surface); }

.automation-flow {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr auto 1fr;
  gap: var(--space-4);
  align-items: start;
  margin-bottom: var(--space-16);
}

.flow-node {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  text-align: center;
  transition: border-color var(--transition), transform var(--transition);
}

.flow-node:hover {
  border-color: rgba(168,85,247,0.4);
  transform: translateY(-4px);
}

.flow-icon {
  width: 52px; height: 52px;
  background: var(--grad-glow);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-4);
}

.flow-icon svg { width: 24px; height: 24px; color: var(--color-primary); }

.flow-node h4 {
  font-size: var(--text-base);
  font-weight: 700;
  margin-bottom: var(--space-2);
}

.flow-node p {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  line-height: 1.6;
}

.flow-arrow {
  font-size: var(--text-xl);
  color: var(--color-primary);
  align-self: center;
  padding-top: var(--space-3);
}

.ads-metrics {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-2xl);
  padding: var(--space-10);
  margin-bottom: var(--space-10);
}

.ads-metrics h3 {
  font-size: var(--text-xl);
  font-weight: 700;
  margin-bottom: var(--space-3);
}

.metrics-intro {
  color: var(--color-text-muted);
  margin-bottom: var(--space-6);
}

.metrics-grid {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-bottom: var(--space-6);
}

.metric-chip {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  background: var(--color-surface-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-3) var(--space-5);
  min-width: 90px;
  transition: border-color var(--transition);
}

.metric-chip:hover { border-color: rgba(168,85,247,0.4); }

.metric-chip--glow {
  border-color: var(--color-gold);
  background: rgba(245,158,11,0.05);
  box-shadow: 0 0 20px rgba(245,158,11,0.15);
  animation: glow-pulse 2s ease-in-out infinite;
}

@keyframes glow-pulse {
  0%, 100% { box-shadow: 0 0 10px rgba(245,158,11,0.15); }
  50% { box-shadow: 0 0 30px rgba(245,158,11,0.3); }
}

.m-label {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-primary);
}

.metric-chip--glow .m-label { color: var(--color-gold); }

.m-desc {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  text-align: center;
}

.miracle-banner {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  background: linear-gradient(135deg, rgba(245,158,11,0.1), rgba(168,85,247,0.1));
  border: 1px solid rgba(245,158,11,0.3);
  border-radius: var(--radius-xl);
  padding: var(--space-5) var(--space-6);
}

.miracle-icon { font-size: 1.5rem; }

.miracle-banner strong { color: var(--color-gold); }

.reports-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-5);
}

.report-card {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  text-align: center;
  transition: border-color var(--transition), transform var(--transition);
}

.report-card:hover {
  border-color: rgba(6,182,212,0.3);
  transform: translateY(-4px);
}

.report-icon { font-size: 2rem; margin-bottom: var(--space-3); }

.report-card h4 {
  font-size: var(--text-base);
  font-weight: 700;
  margin-bottom: var(--space-2);
}

.report-card p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* ── INSTRUCTOR ─────────────────────────────────────────────── */
.instructor { background: var(--color-bg); }

.instructor-card {
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: var(--space-16);
  align-items: center;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-2xl);
  padding: clamp(var(--space-10), 5vw, var(--space-16));
}

.instructor-visual {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-6);
}

.instructor-avatar {
  width: 210px;
  height: 210px;
  border-radius: 50%;
  padding: 3px;
  background: var(--grad-primary);
  box-shadow: var(--shadow-glow-purple);
  flex-shrink: 0;
}

.instructor-photo {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  object-fit: cover;
  object-position: center top;
  display: block;
  border: 3px solid var(--color-surface);
}

.instructor-badge-ring {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  justify-content: center;
}

.instructor-badge-ring span {
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-text-muted);
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
}

.instructor-bio .eyebrow { display: block; }

.instructor-bio h2 {
  font-size: var(--text-2xl);
  font-weight: 700;
  margin-bottom: var(--space-2);
}

.instructor-title {
  font-size: var(--text-base);
  color: var(--color-accent);
  font-weight: 600;
  margin-bottom: var(--space-5);
}

.instructor-bio p {
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
  line-height: 1.7;
}

.instructor-highlights {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-top: var(--space-5);
}

.ih-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.ih-item svg {
  width: 18px; height: 18px;
  color: var(--color-accent);
  flex-shrink: 0;
}

/* ── DELIVERABLES ───────────────────────────────────────────── */
.deliverables { background: var(--color-surface); }

.deliverables-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-5);
}

.del-card {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  text-align: center;
  transition: border-color var(--transition), transform var(--transition);
}

.del-card:hover {
  border-color: rgba(168,85,247,0.3);
  transform: translateY(-4px);
}

.del-icon { font-size: 2.5rem; margin-bottom: var(--space-4); }

.del-card h4 {
  font-size: var(--text-base);
  font-weight: 700;
  margin-bottom: var(--space-2);
}

.del-card p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* ── ENROLL ─────────────────────────────────────────────────── */
.enroll {
  position: relative;
  overflow: hidden;
  background: var(--color-bg);
}

.enroll-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.enroll-bg .orb-1 {
  position: absolute;
  width: 500px; height: 500px;
  top: -100px; right: -100px;
  border-radius: 50%;
  background: rgba(168,85,247,0.12);
  filter: blur(80px);
}

.enroll-bg .orb-2 {
  position: absolute;
  width: 400px; height: 400px;
  bottom: -100px; left: -50px;
  border-radius: 50%;
  background: rgba(6,182,212,0.1);
  filter: blur(80px);
}

.enroll-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 800px;
  margin-inline: auto;
}

.enroll-content h2 {
  font-size: var(--text-2xl);
  font-weight: 700;
  margin-bottom: var(--space-5);
  line-height: 1.3;
}

.gradient-text {
  background: var(--grad-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.enroll-content > p {
  color: var(--color-text-muted);
  font-size: var(--text-lg);
  margin-bottom: var(--space-8);
}

.enroll-cta-group {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-12);
}

.btn-enroll {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  background: var(--grad-primary);
  color: #fff;
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  padding: var(--space-5) var(--space-12);
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-glow-purple);
  transition: transform var(--transition), box-shadow var(--transition);
}

.btn-enroll svg { width: 22px; height: 22px; }

.btn-enroll:hover {
  transform: translateY(-4px) scale(1.02);
  box-shadow: 0 0 80px rgba(168,85,247,0.5);
}

.enroll-note {
  font-size: var(--text-sm);
  color: var(--color-text-faint);
}

.for-whom {
  text-align: right;
}

.for-whom h4 {
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
  text-align: center;
}

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

.for-item {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-3) var(--space-4);
  text-align: center;
  transition: border-color var(--transition);
}

.for-item:hover { border-color: rgba(168,85,247,0.3); color: var(--color-text); }

/* ── FOOTER ─────────────────────────────────────────────────── */
.footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding-block: var(--space-12) var(--space-6);
}

.footer-inner {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-8);
  margin-bottom: var(--space-8);
  flex-wrap: wrap;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  max-width: 320px;
}

.footer-brand p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.footer-links {
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-3);
  align-items: center;
}

.footer-links a {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  padding: var(--space-2) var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  transition: color var(--transition), border-color var(--transition), background var(--transition);
}

.footer-links a:hover {
  color: var(--color-primary);
  border-color: rgba(168,85,247,0.4);
  background: rgba(168,85,247,0.06);
}

.footer-bottom {
  text-align: center;
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border);
}

.footer-bottom p {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}

/* ── MOBILE ─────────────────────────────────────────────────── */
@media (max-width: 1024px) {
  .triangle-concept { grid-template-columns: 1fr; }
  .triangle-visual { flex-direction: row; flex-wrap: wrap; justify-content: center; }
  .tri-bridge { flex-direction: row; padding: 0 var(--space-3); }
  .bridge-line { width: 30px; height: 2px; }
  .foundations-grid { grid-template-columns: repeat(2, 1fr); }
  .found-card--wide { grid-column: 1 / -1; grid-template-columns: auto 1fr; }
  .chess-visual { display: none; }
  .automation-flow { grid-template-columns: 1fr; }
  .flow-arrow { transform: rotate(90deg); justify-self: center; }
  .projects-grid { grid-template-columns: repeat(2, 1fr); }
  .project-card--featured,
  .project-card--highlight { grid-column: 1 / -1; }
  .instructor-card { grid-template-columns: 1fr; }
  .instructor-visual { flex-direction: row; }
  .deliverables-grid { grid-template-columns: repeat(2, 1fr); }
  .for-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .nav { display: none; }
  .menu-toggle { display: flex; }

  /* Hero */
  .hero { padding-top: 80px; padding-bottom: var(--space-12); }
  .hero-kicker {
    font-size: var(--text-sm);
    text-align: center;
    line-height: 1.5;
    max-width: 320px;
  }
  .hero-title {
    font-size: clamp(2.2rem, 11vw, 3.5rem);
    gap: var(--space-1);
  }
  .hero-sub { font-size: var(--text-base); padding-inline: var(--space-2); }
  .hero-stats {
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-4);
    padding: var(--space-4) var(--space-6);
    width: 100%;
  }
  .stat-num { font-size: var(--text-xl); }
  .stat-divider { display: none; }

  /* About / Triangle */
  .triangle-concept { grid-template-columns: 1fr; gap: var(--space-8); }
  .triangle-visual {
    flex-direction: column;
    align-items: center;
    gap: 0;
  }
  .tri-bridge {
    flex-direction: column;
    padding: 0;
  }
  .bridge-line { width: 2px; height: 24px; }

  /* Curriculum */
  .track-phase { grid-template-columns: 44px 1fr; gap: var(--space-3); }
  .phase-num { width: 40px; height: 40px; font-size: var(--text-sm); }
  .phase-content h3 { font-size: var(--text-lg); }
  .phase-content { padding: var(--space-5); }

  /* Projects */
  .projects-grid { grid-template-columns: 1fr; }
  .project-card--featured,
  .project-card--highlight { grid-column: auto; }

  /* Automation */
  .automation-flow {
    grid-template-columns: 1fr;
    gap: var(--space-3);
  }
  .flow-arrow { transform: rotate(90deg); justify-self: center; font-size: var(--text-base); }
  .ads-metrics { padding: var(--space-6); }
  .ads-metrics h3 { font-size: var(--text-lg); }
  .reports-row { grid-template-columns: 1fr; }
  .miracle-banner { flex-direction: column; text-align: center; gap: var(--space-3); }

  /* Instructor */
  .instructor-card {
    grid-template-columns: 1fr;
    padding: var(--space-8);
    gap: var(--space-8);
  }
  .instructor-visual { flex-direction: column; align-items: center; }
  .instructor-avatar { width: 160px; height: 160px; }
  .instructor-bio h2 { font-size: var(--text-xl); }

  /* Deliverables */
  .deliverables-grid { grid-template-columns: 1fr 1fr; gap: var(--space-3); }

  /* Enroll */
  .enroll-content h2 { font-size: var(--text-xl); }
  .for-grid { grid-template-columns: 1fr 1fr; }
  .btn-enroll { padding: var(--space-4) var(--space-6); font-size: var(--text-base); width: 100%; justify-content: center; }

  /* Footer */
  .footer-inner { flex-direction: column; gap: var(--space-6); }
  .footer-links { justify-content: flex-start; }
}

@media (max-width: 480px) {
  /* Hero */
  .hero-title { font-size: clamp(1.9rem, 10vw, 2.8rem); }
  .hero-kicker { font-size: var(--text-xs); max-width: 280px; }
  .badge-pill { font-size: 0.7rem; padding: var(--space-1) var(--space-3); }
  .hero-cta { flex-direction: column; width: 100%; }
  .btn-primary, .btn-ghost { width: 100%; justify-content: center; }
  .btn-enroll { width: 100%; justify-content: center; }

  /* Foundations */
  .foundations-grid { grid-template-columns: 1fr; }
  .found-card--wide { grid-template-columns: 1fr; }
  .found-card { padding: var(--space-5); }

  /* Metrics */
  .metrics-grid { gap: var(--space-2); }
  .metric-chip { min-width: 70px; padding: var(--space-2) var(--space-3); }
  .m-label { font-size: var(--text-xs); }
  .m-desc { font-size: 0.62rem; }

  /* Cards padding */
  .project-card, .phase-content, .del-card, .report-card { padding: var(--space-5); }

  /* Deliverables */
  .deliverables-grid { grid-template-columns: 1fr; }
  .for-grid { grid-template-columns: 1fr; }

  /* Section headers */
  .section-header h2 { font-size: var(--text-xl); }
  .section-header { margin-bottom: var(--space-8); }

  /* Enroll */
  .enroll-content h2 { font-size: var(--text-lg); }
}

/* ── MOBILE NAV (JS toggled) ────────────────────────────────── */
.nav.open {
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 68px;
  inset-inline: 0;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-6);
  gap: var(--space-5);
  z-index: 99;
}