/* ============================================================
   RehmanLabs.me — Main Stylesheet
   Dark mode + neon cyan/green highlights
   ============================================================ */

/* ── CSS Variables ─────────────────────────────────────────── */
:root {
  --bg-primary:    #0a0e17;
  --bg-secondary:  #0d1220;
  --bg-card:       #111827;
  --bg-card-hover: #152035;
  --neon-cyan:     #00d4ff;
  --neon-green:    #00ff88;
  --neon-purple:   #7c3aed;
  --text-primary:  #e2e8f0;
  --text-muted:    #94a3b8;
  --border-color:  rgba(0, 212, 255, 0.15);
  --transition:    0.3s ease;
  --radius:        12px;
  --shadow-neon:   0 0 20px rgba(0, 212, 255, 0.3);
  --shadow-card:   0 4px 24px rgba(0, 0, 0, 0.4);
  --gradient-hero: linear-gradient(135deg, #0a0e17 0%, #0d1a2e 50%, #0a1628 100%);
  --gradient-btn:  linear-gradient(135deg, #00d4ff, #00ff88);
  --gradient-btn2: linear-gradient(135deg, #7c3aed, #00d4ff);
}

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

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

body {
  font-family: 'Inter', 'Segoe UI', sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

a { color: var(--neon-cyan); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--neon-green); }

img { max-width: 100%; display: block; }

ul { list-style: none; }

/* ── Scrollbar ─────────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: var(--neon-cyan); border-radius: 3px; }

/* ── Utility Classes ────────────────────────────────────────── */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section-padding { padding: 96px 0; }
.section-sm { padding: 64px 0; }
.text-center { text-align: center; }
.text-neon { color: var(--neon-cyan); }
.text-green { color: var(--neon-green); }
.text-muted { color: var(--text-muted); }
.fw-bold { font-weight: 700; }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mt-4 { margin-top: 32px; }
.mb-2 { margin-bottom: 16px; }
.mb-4 { margin-bottom: 32px; }
.d-flex { display: flex; }
.align-center { align-items: center; }
.justify-center { justify-content: center; }
.gap-2 { gap: 16px; }
.gap-3 { gap: 24px; }
.hidden { display: none !important; }

/* ── Section Headings ───────────────────────────────────────── */
.section-title {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 800;
  margin-bottom: 16px;
  line-height: 1.2;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto 48px;
}

.neon-line {
  width: 60px;
  height: 3px;
  background: var(--gradient-btn);
  border-radius: 2px;
  margin: 12px auto 32px;
}

/* ── Buttons ────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 50px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  outline: none;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
  text-decoration: none;
}

.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,0.1);
  opacity: 0;
  transition: opacity var(--transition);
}

.btn:hover::after { opacity: 1; }

.btn-primary {
  background: var(--gradient-btn);
  color: #0a0e17;
}

.btn-primary:hover {
  box-shadow: 0 0 30px rgba(0, 212, 255, 0.5);
  transform: translateY(-2px);
  color: #0a0e17;
}

.btn-outline {
  background: transparent;
  color: var(--neon-cyan);
  border: 2px solid var(--neon-cyan);
}

.btn-outline:hover {
  background: var(--neon-cyan);
  color: var(--bg-primary);
  box-shadow: var(--shadow-neon);
  transform: translateY(-2px);
}

.btn-ghost {
  background: rgba(0, 212, 255, 0.08);
  color: var(--neon-cyan);
  border: 1px solid var(--border-color);
}

.btn-ghost:hover {
  background: rgba(0, 212, 255, 0.15);
  border-color: var(--neon-cyan);
}

.btn-sm { padding: 10px 22px; font-size: 0.875rem; }
.btn-lg { padding: 18px 44px; font-size: 1.1rem; }

/* ── Navbar ─────────────────────────────────────────────────── */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 18px 0;
  transition: all 0.4s ease;
  border-bottom: 1px solid transparent;
}

.navbar.scrolled {
  background: rgba(10, 14, 23, 0.95);
  backdrop-filter: blur(20px);
  padding: 12px 0;
  border-bottom-color: var(--border-color);
  box-shadow: 0 4px 24px rgba(0,0,0,0.4);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 10px;
}

.nav-logo span { color: var(--neon-cyan); }

.nav-logo-icon {
  width: 36px;
  height: 36px;
  background: var(--gradient-btn);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-links a {
  color: var(--text-muted);
  font-size: 0.95rem;
  font-weight: 500;
  padding: 8px 16px;
  border-radius: 8px;
  transition: all var(--transition);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--neon-cyan);
  background: rgba(0, 212, 255, 0.08);
}

.nav-actions { display: flex; align-items: center; gap: 12px; }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all var(--transition);
}

.nav-toggle.open span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ── Hero Section ───────────────────────────────────────────── */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  background: var(--gradient-hero);
  overflow: hidden;
}

/* Animated cyber grid */
.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0, 212, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 212, 255, 0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  animation: gridPulse 8s ease-in-out infinite;
}

@keyframes gridPulse {
  0%, 100% { opacity: 0.5; }
  50% { opacity: 1; }
}

/* Floating orbs */
.hero-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  animation: orbFloat 10s ease-in-out infinite;
  pointer-events: none;
}

.hero-orb-1 {
  width: 400px;
  height: 400px;
  background: rgba(0, 212, 255, 0.12);
  top: -100px;
  right: -100px;
  animation-delay: 0s;
}

.hero-orb-2 {
  width: 300px;
  height: 300px;
  background: rgba(0, 255, 136, 0.08);
  bottom: -50px;
  left: 20%;
  animation-delay: -4s;
}

.hero-orb-3 {
  width: 200px;
  height: 200px;
  background: rgba(124, 58, 237, 0.12);
  top: 30%;
  left: -50px;
  animation-delay: -7s;
}

@keyframes orbFloat {
  0%, 100% { transform: translateY(0px) scale(1); }
  50% { transform: translateY(-30px) scale(1.05); }
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  padding-top: 80px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(0, 212, 255, 0.1);
  border: 1px solid var(--border-color);
  border-radius: 50px;
  padding: 8px 20px;
  font-size: 0.85rem;
  color: var(--neon-cyan);
  margin-bottom: 24px;
  animation: badgePulse 3s ease-in-out infinite;
}

@keyframes badgePulse {
  0%, 100% { box-shadow: 0 0 0 rgba(0, 212, 255, 0); }
  50% { box-shadow: 0 0 20px rgba(0, 212, 255, 0.2); }
}

.hero-title {
  font-size: clamp(2.2rem, 5vw, 3.8rem);
  font-weight: 900;
  line-height: 1.15;
  margin-bottom: 24px;
}

.hero-title .highlight {
  background: var(--gradient-btn);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-desc {
  font-size: 1.1rem;
  color: var(--text-muted);
  margin-bottom: 40px;
  max-width: 500px;
}

.hero-buttons { display: flex; gap: 16px; flex-wrap: wrap; }

.hero-stats {
  display: flex;
  gap: 32px;
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--border-color);
}

.hero-stat-num {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--neon-cyan);
}

.hero-stat-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* Hero Visual */
.hero-visual {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 32px;
  width: 100%;
  max-width: 420px;
  box-shadow: var(--shadow-card), var(--shadow-neon);
  animation: cardFloat 6s ease-in-out infinite;
}

@keyframes cardFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

.hero-card-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
}

.hero-card-icon {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, rgba(0,212,255,0.2), rgba(0,255,136,0.2));
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  border: 1px solid var(--border-color);
}

.hero-card-title { font-weight: 700; font-size: 1.1rem; }
.hero-card-sub { font-size: 0.8rem; color: var(--text-muted); }

.hero-progress-list { display: flex; flex-direction: column; gap: 16px; }

.hero-progress-label {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
  margin-bottom: 6px;
}
.hero-progress-bar {
  height: 6px;
  background: rgba(255,255,255,0.08);
  border-radius: 3px;
  overflow: hidden;
}
.hero-progress-fill {
  height: 100%;
  border-radius: 3px;
  background: var(--gradient-btn);
  animation: fillGrow 2s ease-out forwards;
  transform-origin: left;
}

@keyframes fillGrow {
  from { width: 0 !important; }
}

.hero-floating-badge {
  position: absolute;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 12px 16px;
  font-size: 0.8rem;
  display: flex;
  align-items: center;
  gap: 8px;
  box-shadow: var(--shadow-card);
  animation: floatBadge 4s ease-in-out infinite;
}

.hero-floating-badge.top-left {
  top: -20px;
  left: -30px;
  animation-delay: -2s;
}

.hero-floating-badge.bottom-right {
  bottom: -20px;
  right: -30px;
}

@keyframes floatBadge {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

/* ── Counters Section ───────────────────────────────────────── */
.counters-section {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
  padding: 64px 0;
}

.counters-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}

.counter-card {
  text-align: center;
  padding: 32px 24px;
  border-radius: var(--radius);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  transition: all var(--transition);
}

.counter-card:hover {
  border-color: var(--neon-cyan);
  box-shadow: var(--shadow-neon);
  transform: translateY(-4px);
}

.counter-icon {
  font-size: 2.5rem;
  margin-bottom: 16px;
  display: block;
}

.counter-number {
  font-size: 2.5rem;
  font-weight: 900;
  color: var(--neon-cyan);
  line-height: 1;
  margin-bottom: 8px;
}

.counter-label {
  font-size: 0.9rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* ── Features Section ───────────────────────────────────────── */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 36px 28px;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient-btn);
  transform: scaleX(0);
  transition: transform var(--transition);
}

.feature-card:hover {
  border-color: rgba(0, 212, 255, 0.3);
  box-shadow: var(--shadow-card), 0 0 40px rgba(0,212,255,0.08);
  transform: translateY(-6px);
}

.feature-card:hover::before { transform: scaleX(1); }

.feature-icon {
  width: 60px;
  height: 60px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  margin-bottom: 20px;
  background: linear-gradient(135deg, rgba(0,212,255,0.15), rgba(0,255,136,0.08));
  border: 1px solid var(--border-color);
}

.feature-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.feature-desc { font-size: 0.9rem; color: var(--text-muted); line-height: 1.7; }

/* ── Course Cards ───────────────────────────────────────────── */
.courses-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.course-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  overflow: hidden;
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
}

.course-card:hover {
  border-color: rgba(0, 212, 255, 0.4);
  box-shadow: var(--shadow-card), 0 0 40px rgba(0,212,255,0.1);
  transform: translateY(-8px);
}

.course-thumbnail {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
  background: linear-gradient(135deg, #0d1a2e, #1a0d2e);
}

.course-thumbnail-inner {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
}

.course-play-btn {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,0.4);
  opacity: 0;
  transition: opacity var(--transition);
}

.course-play-btn span {
  width: 56px;
  height: 56px;
  background: var(--gradient-btn);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  color: var(--bg-primary);
  transform: scale(0.8);
  transition: transform var(--transition);
}

.course-card:hover .course-play-btn { opacity: 1; }
.course-card:hover .course-play-btn span { transform: scale(1); }

.course-badge {
  position: absolute;
  top: 12px;
  left: 12px;
  background: var(--gradient-btn);
  color: var(--bg-primary);
  font-size: 0.72rem;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 50px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.course-body { padding: 24px; flex: 1; display: flex; flex-direction: column; }

/* ── Course Card Internals ──────────────────────────────────── */
.course-meta {
  display: flex;
  gap: 12px;
  margin-bottom: 12px;
}

.course-tag {
  font-size: 0.75rem;
  color: var(--neon-cyan);
  background: rgba(0,212,255,0.1);
  border: 1px solid rgba(0,212,255,0.2);
  padding: 3px 10px;
  border-radius: 50px;
  font-weight: 600;
}

.course-title {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 8px;
  line-height: 1.4;
}

.course-desc {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 16px;
  flex: 1;
}

.course-instructor {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border-color);
}

.instructor-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--gradient-btn);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--bg-primary);
  flex-shrink: 0;
}

.instructor-name { font-size: 0.85rem; font-weight: 600; }

.course-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.course-rating {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 0.875rem;
}

.stars { color: #f59e0b; }

.course-price {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--neon-green);
}

.course-price .original {
  font-size: 0.85rem;
  color: var(--text-muted);
  text-decoration: line-through;
  margin-right: 6px;
  font-weight: 400;
}

.course-enroll-btn {
  width: 100%;
  margin-top: 16px;
  justify-content: center;
}

/* ── Search & Filter Bar ────────────────────────────────────── */
.search-filter-bar {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 40px;
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  align-items: center;
}

.search-box {
  flex: 1;
  min-width: 220px;
  position: relative;
}

.search-box input {
  width: 100%;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 12px 16px 12px 44px;
  color: var(--text-primary);
  font-size: 0.95rem;
  outline: none;
  transition: border-color var(--transition);
}

.search-box input:focus { border-color: var(--neon-cyan); }
.search-box input::placeholder { color: var(--text-muted); }

.search-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
}

.filter-buttons { display: flex; gap: 8px; flex-wrap: wrap; }

.filter-btn {
  padding: 10px 20px;
  border-radius: 50px;
  border: 1px solid var(--border-color);
  background: transparent;
  color: var(--text-muted);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
}

.filter-btn:hover,
.filter-btn.active {
  background: rgba(0,212,255,0.1);
  border-color: var(--neon-cyan);
  color: var(--neon-cyan);
}

/* ── Testimonials ───────────────────────────────────────────── */
.testimonials-section { background: var(--bg-secondary); }

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.testimonial-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 32px;
  transition: all var(--transition);
}

.testimonial-card:hover {
  border-color: rgba(0,212,255,0.3);
  transform: translateY(-4px);
  box-shadow: var(--shadow-card);
}

.testimonial-quote {
  font-size: 2.5rem;
  color: var(--neon-cyan);
  line-height: 1;
  margin-bottom: 16px;
}

.testimonial-text {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 24px;
  font-style: italic;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 14px;
}

.testimonial-avatar {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: var(--gradient-btn);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  font-weight: 700;
  color: var(--bg-primary);
  flex-shrink: 0;
}

.testimonial-name { font-weight: 700; font-size: 0.95rem; }
.testimonial-role { font-size: 0.8rem; color: var(--text-muted); }

/* ── CTA Banner ─────────────────────────────────────────────── */
.cta-section {
  background: linear-gradient(135deg, #0d1a2e, #0a0e17);
  border: 1px solid var(--border-color);
  border-radius: 24px;
  padding: 80px 48px;
  margin: 80px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0,212,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,212,255,0.03) 1px, transparent 1px);
  background-size: 40px 40px;
}

.cta-content { position: relative; z-index: 1; }

.cta-title { font-size: clamp(1.8rem, 4vw, 2.8rem); font-weight: 800; margin-bottom: 16px; }

.cta-desc { font-size: 1.05rem; color: var(--text-muted); margin-bottom: 36px; max-width: 520px; margin-left: auto; margin-right: auto; }

.cta-buttons { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* ── Login / Auth Pages ─────────────────────────────────────── */
.auth-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: var(--gradient-hero);
  position: relative;
  overflow: hidden;
}

.auth-grid-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0,212,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,212,255,0.04) 1px, transparent 1px);
  background-size: 60px 60px;
}

.auth-container {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: 460px;
  margin: 0 auto;
  padding: 24px;
}

.auth-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 48px 40px;
  box-shadow: var(--shadow-card), var(--shadow-neon);
}

.auth-logo {
  text-align: center;
  margin-bottom: 32px;
}

.auth-logo .logo-icon {
  width: 56px;
  height: 56px;
  background: var(--gradient-btn);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  margin: 0 auto 16px;
}

.auth-title { font-size: 1.6rem; font-weight: 800; text-align: center; margin-bottom: 8px; }
.auth-subtitle { font-size: 0.9rem; color: var(--text-muted); text-align: center; margin-bottom: 32px; }

.auth-tabs {
  display: flex;
  background: var(--bg-primary);
  border-radius: 10px;
  padding: 4px;
  margin-bottom: 32px;
}

.auth-tab {
  flex: 1;
  padding: 10px;
  text-align: center;
  border-radius: 8px;
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-muted);
  transition: all var(--transition);
  border: none;
  background: transparent;
}

.auth-tab.active {
  background: var(--gradient-btn);
  color: var(--bg-primary);
}

.form-group { margin-bottom: 20px; }

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.form-control {
  width: 100%;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 13px 16px;
  color: var(--text-primary);
  font-size: 0.95rem;
  outline: none;
  transition: all var(--transition);
}

.form-control:focus {
  border-color: var(--neon-cyan);
  box-shadow: 0 0 0 3px rgba(0,212,255,0.1);
}

.form-control::placeholder { color: var(--text-muted); }

.form-control.error {
  border-color: #ef4444;
  animation: shake 0.4s ease;
}

.form-control.success { border-color: var(--neon-green); }

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-8px); }
  75% { transform: translateX(8px); }
}

.form-message {
  font-size: 0.8rem;
  margin-top: 6px;
  display: flex;
  align-items: center;
  gap: 4px;
}

.form-message.error { color: #ef4444; }
.form-message.success { color: var(--neon-green); }

.input-wrapper { position: relative; }

.input-icon {
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  cursor: pointer;
  transition: color var(--transition);
}

.input-icon:hover { color: var(--neon-cyan); }

.form-control.has-icon { padding-right: 44px; }

.divider {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 24px 0;
  color: var(--text-muted);
  font-size: 0.85rem;
}

.divider::before,
.divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border-color);
}

.btn-google {
  width: 100%;
  justify-content: center;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  gap: 10px;
}

.btn-google:hover {
  background: rgba(255,255,255,0.1);
  border-color: rgba(255,255,255,0.2);
  color: var(--text-primary);
}

.btn-submit {
  width: 100%;
  justify-content: center;
  font-size: 1rem;
}

.form-footer {
  text-align: center;
  margin-top: 24px;
  font-size: 0.875rem;
  color: var(--text-muted);
}

/* ── Dashboard ──────────────────────────────────────────────── */
.dashboard-layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  min-height: 100vh;
  padding-top: 70px;
}

.sidebar {
  background: var(--bg-secondary);
  border-right: 1px solid var(--border-color);
  padding: 32px 16px;
  position: sticky;
  top: 70px;
  height: calc(100vh - 70px);
  overflow-y: auto;
}

.sidebar-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 12px;
  margin-bottom: 32px;
  font-weight: 800;
  font-size: 1.1rem;
}

.sidebar-logo span { color: var(--neon-cyan); }

.sidebar-nav { display: flex; flex-direction: column; gap: 4px; }

.sidebar-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border-radius: 10px;
  color: var(--text-muted);
  font-size: 0.9rem;
  font-weight: 500;
  transition: all var(--transition);
  border: none;
  background: none;
  cursor: pointer;
  width: 100%;
  text-align: left;
  text-decoration: none;
}

.sidebar-link:hover,
.sidebar-link.active {
  background: rgba(0,212,255,0.08);
  color: var(--neon-cyan);
  border: none;
}

.sidebar-link .icon { font-size: 1.1rem; flex-shrink: 0; }

.sidebar-divider {
  height: 1px;
  background: var(--border-color);
  margin: 16px 0;
}

.sidebar-section-title {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--text-muted);
  padding: 0 16px;
  margin-bottom: 8px;
}

.dashboard-main { padding: 40px; overflow-y: auto; }

.dashboard-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 40px;
}

.dashboard-greeting { font-size: 1.5rem; font-weight: 800; }
.dashboard-date { font-size: 0.875rem; color: var(--text-muted); margin-top: 4px; }

.dashboard-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 40px;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 24px;
  transition: all var(--transition);
}

.stat-card:hover {
  border-color: rgba(0,212,255,0.3);
  transform: translateY(-2px);
}

.stat-icon {
  font-size: 1.6rem;
  margin-bottom: 12px;
  display: block;
}

.stat-value { font-size: 1.8rem; font-weight: 800; color: var(--neon-cyan); }
.stat-label { font-size: 0.8rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 1px; }

/* Progress bars */
.progress-bar-wrap { margin-bottom: 8px; }
.progress-label {
  display: flex;
  justify-content: space-between;
  font-size: 0.875rem;
  margin-bottom: 6px;
}
.progress-track {
  height: 8px;
  background: rgba(255,255,255,0.08);
  border-radius: 4px;
  overflow: hidden;
}
.progress-fill {
  height: 100%;
  border-radius: 4px;
  background: var(--gradient-btn);
  transition: width 1.5s cubic-bezier(0.16, 1, 0.3, 1);
  width: 0;
}

/* Enrolled course row */
.enrolled-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 24px;
  display: grid;
  grid-template-columns: 64px 1fr auto;
  gap: 20px;
  align-items: center;
  transition: all var(--transition);
  margin-bottom: 16px;
}

.enrolled-card:hover {
  border-color: rgba(0,212,255,0.3);
  box-shadow: var(--shadow-card);
}

.enrolled-thumb {
  width: 64px;
  height: 64px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  background: linear-gradient(135deg, rgba(0,212,255,0.15), rgba(0,255,136,0.08));
  border: 1px solid var(--border-color);
  flex-shrink: 0;
}

.enrolled-title { font-weight: 700; margin-bottom: 4px; }
.enrolled-meta { font-size: 0.8rem; color: var(--text-muted); margin-bottom: 10px; }

.cert-badge {
  background: linear-gradient(135deg, rgba(0,212,255,0.1), rgba(0,255,136,0.08));
  border: 1px solid var(--neon-cyan);
  border-radius: 10px;
  padding: 12px 20px;
  text-align: center;
  font-size: 0.85rem;
  color: var(--neon-cyan);
  cursor: pointer;
  transition: all var(--transition);
}

.cert-badge:hover {
  background: rgba(0,212,255,0.2);
  box-shadow: var(--shadow-neon);
}

/* ── Course Detail ───────────────────────────────────────────── */
.course-hero {
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  padding: 100px 0 60px;
}

.course-detail-grid {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: 48px;
  align-items: start;
}

.video-wrapper {
  position: relative;
  aspect-ratio: 16/9;
  background: #000;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border-color);
}

.video-wrapper iframe {
  width: 100%;
  height: 100%;
  border: none;
}

.curriculum-section { margin-top: 48px; }

.curriculum-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  margin-bottom: 10px;
  overflow: hidden;
  transition: border-color var(--transition);
}

.curriculum-item.open { border-color: rgba(0,212,255,0.3); }

.curriculum-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 20px;
  cursor: pointer;
  user-select: none;
}

.curriculum-title { font-weight: 600; font-size: 0.95rem; }

.curriculum-arrow {
  transition: transform var(--transition);
  color: var(--neon-cyan);
  font-size: 1.1rem;
}

.curriculum-item.open .curriculum-arrow { transform: rotate(180deg); }

.curriculum-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.curriculum-item.open .curriculum-body { max-height: 500px; }

.curriculum-lesson {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 20px;
  font-size: 0.875rem;
  border-top: 1px solid var(--border-color);
  color: var(--text-muted);
  transition: all var(--transition);
}

.curriculum-lesson:hover { background: rgba(0,212,255,0.04); color: var(--text-primary); }

.lesson-icon { color: var(--neon-cyan); flex-shrink: 0; }
.lesson-duration { margin-left: auto; font-size: 0.8rem; }

/* Sticky enroll card */
.enroll-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 32px;
  position: sticky;
  top: 90px;
  box-shadow: var(--shadow-card);
}

.enroll-price-main { font-size: 2.4rem; font-weight: 900; color: var(--neon-green); }
.enroll-price-old { font-size: 1rem; color: var(--text-muted); text-decoration: line-through; }
.enroll-discount { font-size: 0.85rem; color: #f59e0b; font-weight: 600; }

.enroll-features { margin: 24px 0; display: flex; flex-direction: column; gap: 12px; }
.enroll-feature { display: flex; align-items: center; gap: 10px; font-size: 0.875rem; color: var(--text-muted); }
.enroll-feature .check { color: var(--neon-green); }

/* ── About / Contact ────────────────────────────────────────── */
.about-hero {
  padding: 100px 0 60px;
  text-align: center;
  background: var(--bg-secondary);
}

.team-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
}

.team-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 36px 24px;
  text-align: center;
  transition: all var(--transition);
}

.team-card:hover {
  border-color: rgba(0,212,255,0.3);
  transform: translateY(-6px);
  box-shadow: var(--shadow-card);
}

.team-avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: var(--gradient-btn);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  font-weight: 800;
  color: var(--bg-primary);
  margin: 0 auto 16px;
  border: 3px solid var(--border-color);
  transition: border-color var(--transition);
}

.team-card:hover .team-avatar { border-color: var(--neon-cyan); }

.team-name { font-size: 1rem; font-weight: 700; margin-bottom: 4px; }
.team-role { font-size: 0.8rem; color: var(--neon-cyan); margin-bottom: 8px; }
.team-bio { font-size: 0.82rem; color: var(--text-muted); line-height: 1.6; }

.team-socials { display: flex; justify-content: center; gap: 8px; margin-top: 16px; }

.social-link {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: rgba(0,212,255,0.08);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  color: var(--text-muted);
  transition: all var(--transition);
}

.social-link:hover { background: rgba(0,212,255,0.15); color: var(--neon-cyan); border-color: var(--neon-cyan); }

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

.contact-info-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  margin-bottom: 28px;
}

.contact-info-icon {
  width: 48px;
  height: 48px;
  background: rgba(0,212,255,0.1);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  flex-shrink: 0;
}

.contact-form {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 40px;
}

/* ── Footer ─────────────────────────────────────────────────── */
footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: 72px 0 32px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-brand p { font-size: 0.875rem; color: var(--text-muted); margin-top: 12px; max-width: 280px; line-height: 1.7; }

.footer-heading {
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.footer-links { display: flex; flex-direction: column; gap: 10px; }

.footer-links a {
  font-size: 0.875rem;
  color: var(--text-muted);
  transition: color var(--transition);
}

.footer-links a:hover { color: var(--neon-cyan); }

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 28px;
  border-top: 1px solid var(--border-color);
  font-size: 0.85rem;
  color: var(--text-muted);
}

.footer-socials { display: flex; gap: 10px; }

/* ── Page Header (inner pages) ──────────────────────────────── */
.page-header {
  padding: 100px 0 60px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  position: relative;
  overflow: hidden;
}

.page-header::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0,212,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,212,255,0.04) 1px, transparent 1px);
  background-size: 60px 60px;
}

.page-header-content { position: relative; z-index: 1; }

/* ── Badges / Tags ──────────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: 50px;
  font-size: 0.78rem;
  font-weight: 600;
}

.badge-cyan { background: rgba(0,212,255,0.12); color: var(--neon-cyan); border: 1px solid rgba(0,212,255,0.25); }
.badge-green { background: rgba(0,255,136,0.1); color: var(--neon-green); border: 1px solid rgba(0,255,136,0.25); }
.badge-purple { background: rgba(124,58,237,0.1); color: #a78bfa; border: 1px solid rgba(124,58,237,0.25); }
.badge-yellow { background: rgba(245,158,11,0.1); color: #fbbf24; border: 1px solid rgba(245,158,11,0.25); }

/* ── Breadcrumb ─────────────────────────────────────────────── */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 20px;
}

.breadcrumb a { color: var(--neon-cyan); }
.breadcrumb span { color: var(--text-muted); }

/* ── Animations ─────────────────────────────────────────────── */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.animate-fade-up { animation: fadeInUp 0.6s ease forwards; }
.animate-fade-in { animation: fadeIn 0.4s ease forwards; }

/* AOS overrides */
[data-aos] { pointer-events: none; }
[data-aos].aos-animate { pointer-events: auto; }

/* ── Responsive ─────────────────────────────────────────────── */
@media (max-width: 1024px) {
  .hero-content { grid-template-columns: 1fr; text-align: center; }
  .hero-visual { display: none; }
  .hero-buttons { justify-content: center; }
  .hero-stats { justify-content: center; }
  .counters-grid { grid-template-columns: repeat(2, 1fr); }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .courses-grid { grid-template-columns: repeat(2, 1fr); }
  .testimonials-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .team-grid { grid-template-columns: repeat(2, 1fr); }
  .course-detail-grid { grid-template-columns: 1fr; }
  .enroll-card { position: static; }
  .dashboard-layout { grid-template-columns: 1fr; }
  .sidebar { display: none; }
  .dashboard-stats { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-toggle { display: flex; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    background: rgba(10,14,23,0.98);
    backdrop-filter: blur(20px);
    padding: 24px;
    border-bottom: 1px solid var(--border-color);
    gap: 4px;
  }
  .features-grid { grid-template-columns: 1fr; }
  .courses-grid { grid-template-columns: 1fr; }
  .counters-grid { grid-template-columns: repeat(2, 1fr); }
  .testimonials-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .team-grid { grid-template-columns: 1fr 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .cta-section { padding: 48px 24px; }
  .dashboard-stats { grid-template-columns: 1fr 1fr; }
  .auth-card { padding: 32px 24px; }
  .enrolled-card { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
}

@media (max-width: 480px) {
  .counters-grid { grid-template-columns: 1fr; }
  .team-grid { grid-template-columns: 1fr; }
  .dashboard-stats { grid-template-columns: 1fr; }
  .hero-stats { flex-direction: column; gap: 20px; }
}