/* ============================================
   LEARNFREE — Complete Design System
   Palette: Deep Space + Electric Green + Vivid Orange
   Fonts: Bricolage Grotesque + Plus Jakarta Sans
   ============================================ */

:root {
  --bg-primary: #0D0B1E;
  --bg-secondary: #13102B;
  --bg-card: #1A1735;
  --bg-card-hover: #211E42;
  --accent-green: #B8F369;
  --accent-orange: #FF6B2B;
  --accent-purple: #7B68EE;
  --accent-pink: #FF3CAC;
  --text-primary: #F0EDF8;
  --text-secondary: #A89EC9;
  --text-muted: #6B6490;
  --border: rgba(123, 104, 238, 0.2);
  --border-bright: rgba(184, 243, 105, 0.3);
  --shadow-card: 0 8px 32px rgba(0,0,0,0.4);
  --shadow-glow: 0 0 40px rgba(184, 243, 105, 0.15);
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --font-display: 'Bricolage Grotesque', sans-serif;
  --font-body: 'Plus Jakarta Sans', sans-serif;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

body {
  font-family: var(--font-body);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; display: block; }
button { cursor: pointer; border: none; background: none; font-family: var(--font-body); }
input, select, textarea { font-family: var(--font-body); }

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== TYPOGRAPHY ===== */
.gradient-text {
  background: linear-gradient(135deg, var(--accent-green), var(--accent-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.highlight-text {
  background: linear-gradient(135deg, var(--accent-orange), var(--accent-pink));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.accent { color: var(--accent-green); }

/* ===== NAVBAR ===== */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 16px 0;
  transition: var(--transition);
  background: transparent;
}

.navbar.scrolled {
  background: rgba(13, 11, 30, 0.95);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  padding: 12px 0;
}

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

.nav-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 800;
}

.logo-icon { font-size: 1.4rem; }

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

.nav-link {
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: var(--transition);
}

.nav-link:hover, .nav-link.active {
  color: var(--text-primary);
  background: rgba(123, 104, 238, 0.15);
}

.btn-nav {
  background: var(--accent-green) !important;
  color: var(--bg-primary) !important;
  font-weight: 700 !important;
  border-radius: var(--radius-sm);
}

.btn-nav:hover {
  background: #d4ff7a !important;
  transform: translateY(-1px);
  box-shadow: 0 4px 20px rgba(184, 243, 105, 0.4);
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: var(--transition);
}

/* ===== HERO ===== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding: 120px 24px 80px;
}

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

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.4;
}

.orb-1 {
  width: 500px; height: 500px;
  background: radial-gradient(circle, var(--accent-purple), transparent);
  top: -100px; left: -100px;
  animation: orbFloat 8s ease-in-out infinite;
}

.orb-2 {
  width: 400px; height: 400px;
  background: radial-gradient(circle, var(--accent-green), transparent);
  top: 50%; right: -100px;
  animation: orbFloat 10s ease-in-out infinite reverse;
}

.orb-3 {
  width: 300px; height: 300px;
  background: radial-gradient(circle, var(--accent-orange), transparent);
  bottom: -50px; left: 40%;
  animation: orbFloat 12s ease-in-out infinite;
}

@keyframes orbFloat {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(30px, -30px) scale(1.05); }
  66% { transform: translate(-20px, 20px) scale(0.95); }
}

.grid-overlay {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(123,104,238,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(123,104,238,0.05) 1px, transparent 1px);
  background-size: 60px 60px;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 640px;
  flex: 1;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(184, 243, 105, 0.1);
  border: 1px solid rgba(184, 243, 105, 0.3);
  color: var(--accent-green);
  padding: 8px 16px;
  border-radius: 100px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 24px;
  animation: fadeInUp 0.6s ease both;
}

.badge-dot {
  width: 8px; height: 8px;
  background: var(--accent-green);
  border-radius: 50%;
  animation: pulse 2s ease infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.3); }
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 20px;
  animation: fadeInUp 0.6s ease 0.1s both;
}

.hero-subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 32px;
  animation: fadeInUp 0.6s ease 0.2s both;
}

.hero-search {
  margin-bottom: 40px;
  animation: fadeInUp 0.6s ease 0.3s both;
}

.search-box {
  display: flex;
  align-items: center;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 6px 6px 6px 20px;
  gap: 12px;
  transition: var(--transition);
  max-width: 520px;
}

.search-box:focus-within {
  border-color: var(--accent-green);
  box-shadow: 0 0 0 3px rgba(184, 243, 105, 0.1);
}

.search-icon {
  width: 20px; height: 20px;
  color: var(--text-muted);
  flex-shrink: 0;
}

.search-box input {
  flex: 1;
  background: none;
  border: none;
  outline: none;
  color: var(--text-primary);
  font-size: 0.95rem;
  padding: 8px 0;
}

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

.search-btn {
  background: var(--accent-green);
  color: var(--bg-primary);
  font-weight: 700;
  font-size: 0.9rem;
  padding: 12px 24px;
  border-radius: var(--radius-md);
  transition: var(--transition);
  white-space: nowrap;
}

.search-btn:hover {
  background: #d4ff7a;
  transform: translateY(-1px);
}

.hero-stats {
  display: flex;
  align-items: center;
  gap: 24px;
  animation: fadeInUp 0.6s ease 0.4s both;
}

.stat-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.stat-num {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 800;
  color: var(--accent-green);
  line-height: 1;
}

.stat-plus { color: var(--accent-orange); font-weight: 800; font-size: 1.5rem; }

.stat-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 500;
}

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

.hero-visual {
  position: relative;
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 400px;
}

.floating-cards {
  position: relative;
  width: 400px;
  height: 400px;
}

.float-card {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 14px 20px;
  font-size: 0.9rem;
  font-weight: 600;
  white-space: nowrap;
  box-shadow: var(--shadow-card);
  backdrop-filter: blur(10px);
}

.fc-icon { font-size: 1.3rem; }

.fc-1 { top: 10%; left: 0; animation: float1 4s ease-in-out infinite; border-color: rgba(184,243,105,0.3); }
.fc-2 { top: 0; right: 10%; animation: float2 5s ease-in-out infinite; border-color: rgba(123,104,238,0.3); }
.fc-3 { top: 40%; right: 0; animation: float3 4.5s ease-in-out infinite; border-color: rgba(255,107,43,0.3); }
.fc-4 { bottom: 20%; left: 5%; animation: float4 5.5s ease-in-out infinite; border-color: rgba(255,60,172,0.3); }
.fc-5 { bottom: 5%; right: 20%; animation: float1 6s ease-in-out infinite reverse; border-color: rgba(184,243,105,0.2); }

@keyframes float1 { 0%,100%{transform:translateY(0)} 50%{transform:translateY(-15px)} }
@keyframes float2 { 0%,100%{transform:translateY(0) rotate(-2deg)} 50%{transform:translateY(-20px) rotate(2deg)} }
@keyframes float3 { 0%,100%{transform:translateX(0)} 50%{transform:translateX(-10px)} }
@keyframes float4 { 0%,100%{transform:translateY(0) translateX(0)} 50%{transform:translateY(-12px) translateX(8px)} }

/* ===== MARQUEE ===== */
.marquee-strip {
  background: var(--accent-green);
  padding: 14px 0;
  overflow: hidden;
  white-space: nowrap;
}

.marquee-track {
  display: inline-flex;
  gap: 24px;
  animation: marquee 30s linear infinite;
}

.marquee-track span {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--bg-primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.marquee-track .dot { color: var(--accent-orange); }

@keyframes marquee {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* ===== SECTION COMMON ===== */
.section-header {
  text-align: center;
  margin-bottom: 56px;
}

.section-tag {
  display: inline-block;
  background: rgba(184, 243, 105, 0.1);
  border: 1px solid rgba(184, 243, 105, 0.25);
  color: var(--accent-green);
  padding: 6px 16px;
  border-radius: 100px;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 16px;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 12px;
}

.section-sub {
  color: var(--text-secondary);
  font-size: 1rem;
  max-width: 500px;
  margin: 0 auto;
}

/* ===== CATEGORIES ===== */
.categories-section {
  padding: 100px 0;
  background: var(--bg-secondary);
}

.categories-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.cat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  cursor: pointer;
}

.cat-card::before {
  content: '';
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: var(--transition);
  border-radius: var(--radius-lg);
}

.cat-prog::before { background: linear-gradient(135deg, rgba(184,243,105,0.08), transparent); }
.cat-design::before { background: linear-gradient(135deg, rgba(123,104,238,0.08), transparent); }
.cat-biz::before { background: linear-gradient(135deg, rgba(255,107,43,0.08), transparent); }
.cat-data::before { background: linear-gradient(135deg, rgba(255,60,172,0.08), transparent); }
.cat-lang::before { background: linear-gradient(135deg, rgba(184,243,105,0.08), transparent); }
.cat-mkt::before { background: linear-gradient(135deg, rgba(123,104,238,0.08), transparent); }
.cat-ai::before { background: linear-gradient(135deg, rgba(255,107,43,0.08), transparent); }
.cat-photo::before { background: linear-gradient(135deg, rgba(255,60,172,0.08), transparent); }

.cat-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-bright);
  box-shadow: var(--shadow-glow);
}

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

.cat-icon {
  font-size: 2.2rem;
  margin-bottom: 4px;
}

.cat-card h3 {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
}

.cat-card p {
  font-size: 0.82rem;
  color: var(--text-muted);
}

.cat-arrow {
  margin-top: auto;
  font-size: 1.2rem;
  color: var(--accent-green);
  opacity: 0;
  transform: translateX(-8px);
  transition: var(--transition);
}

.cat-card:hover .cat-arrow {
  opacity: 1;
  transform: translateX(0);
}

/* ===== COURSES SECTION ===== */
.courses-section {
  padding: 100px 0;
}

.filter-tabs {
  display: flex;
  gap: 10px;
  margin-bottom: 40px;
  flex-wrap: wrap;
  justify-content: center;
}

.filter-btn {
  padding: 10px 22px;
  border-radius: 100px;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-secondary);
  background: var(--bg-card);
  border: 1px solid var(--border);
  transition: var(--transition);
}

.filter-btn:hover {
  color: var(--text-primary);
  border-color: var(--accent-purple);
}

.filter-btn.active {
  background: var(--accent-green);
  color: var(--bg-primary);
  border-color: var(--accent-green);
}

.courses-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 48px;
}

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

.course-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-bright);
  box-shadow: var(--shadow-card);
}

.course-thumb {
  height: 180px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
  position: relative;
  overflow: hidden;
}

.course-thumb-prog { background: linear-gradient(135deg, #1a2a1a, #0d1f0d); }
.course-thumb-design { background: linear-gradient(135deg, #1a1a2e, #0d0d1f); }
.course-thumb-biz { background: linear-gradient(135deg, #2a1a0d, #1f0d00); }
.course-thumb-data { background: linear-gradient(135deg, #2a0d1a, #1f0010); }
.course-thumb-ai { background: linear-gradient(135deg, #0d1a2a, #001020); }
.course-thumb-lang { background: linear-gradient(135deg, #1a2a1a, #0a1f0a); }

.course-badge {
  position: absolute;
  top: 12px; left: 12px;
  background: var(--accent-green);
  color: var(--bg-primary);
  font-size: 0.72rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 100px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.course-body {
  padding: 20px;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.course-cat {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-purple);
}

.course-title {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.4;
  color: var(--text-primary);
}

.course-meta {
  display: flex;
  gap: 16px;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.course-rating {
  color: #FFD700;
  font-weight: 600;
}

.course-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: auto;
  padding-top: 12px;
  border-top: 1px solid var(--border);
}

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

.course-enroll-btn {
  background: rgba(184, 243, 105, 0.1);
  color: var(--accent-green);
  border: 1px solid rgba(184, 243, 105, 0.3);
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  font-weight: 700;
  transition: var(--transition);
}

.course-enroll-btn:hover {
  background: var(--accent-green);
  color: var(--bg-primary);
}

.view-all-wrap {
  text-align: center;
}

/* ===== BUTTONS ===== */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent-green);
  color: var(--bg-primary);
  font-weight: 700;
  font-size: 0.95rem;
  padding: 14px 28px;
  border-radius: var(--radius-md);
  transition: var(--transition);
  border: none;
  cursor: pointer;
}

.btn-primary:hover {
  background: #d4ff7a;
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(184, 243, 105, 0.35);
}

.btn-large { padding: 18px 36px; font-size: 1.05rem; border-radius: var(--radius-lg); width: 100%; justify-content: center; }

.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  color: var(--text-primary);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 14px 28px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  transition: var(--transition);
  cursor: pointer;
}

.btn-outline:hover {
  border-color: var(--accent-green);
  color: var(--accent-green);
}

/* ===== HOW IT WORKS ===== */
.how-section {
  padding: 100px 0;
  background: var(--bg-secondary);
}

.steps-grid {
  display: flex;
  align-items: center;
  gap: 24px;
  justify-content: center;
}

.step-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  text-align: center;
  flex: 1;
  max-width: 300px;
  transition: var(--transition);
  position: relative;
}

.step-card:hover {
  border-color: var(--border-bright);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
}

.step-num {
  font-family: var(--font-display);
  font-size: 3.5rem;
  font-weight: 800;
  color: rgba(184, 243, 105, 0.1);
  line-height: 1;
  margin-bottom: 8px;
}

.step-icon {
  font-size: 2.5rem;
  margin-bottom: 16px;
}

.step-card h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.step-card p {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.step-connector {
  font-size: 2rem;
  color: var(--accent-green);
  opacity: 0.5;
  flex-shrink: 0;
}

/* ===== TESTIMONIALS ===== */
.testimonials-section {
  padding: 100px 0;
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.testi-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  transition: var(--transition);
}

.testi-card:hover {
  border-color: var(--border-bright);
  transform: translateY(-4px);
}

.testi-featured {
  background: linear-gradient(135deg, rgba(184,243,105,0.05), rgba(123,104,238,0.05));
  border-color: rgba(184, 243, 105, 0.25);
}

.testi-stars { color: #FFD700; font-size: 1rem; letter-spacing: 2px; }

.testi-card p {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.7;
  font-style: italic;
  flex: 1;
}

.testi-author {
  display: flex;
  align-items: center;
  gap: 12px;
}

.testi-avatar {
  width: 44px; height: 44px;
  background: linear-gradient(135deg, var(--accent-purple), var(--accent-green));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.85rem;
  color: var(--bg-primary);
  flex-shrink: 0;
}

.testi-author strong {
  display: block;
  font-size: 0.9rem;
  font-weight: 700;
}

.testi-author span {
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* ===== CTA SECTION ===== */
.cta-section {
  padding: 100px 0;
  position: relative;
  overflow: hidden;
  background: var(--bg-secondary);
}

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

.orb-cta-1 {
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(184,243,105,0.08), transparent);
  top: -200px; right: -200px;
}

.orb-cta-2 {
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(123,104,238,0.08), transparent);
  bottom: -100px; left: -100px;
}

.cta-content {
  position: relative;
  z-index: 2;
  max-width: 600px;
  margin: 0 auto;
  text-align: center;
}

.cta-title {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 16px;
}

.cta-sub {
  color: var(--text-secondary);
  font-size: 1rem;
  margin-bottom: 40px;
}

.enroll-form {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.enroll-form input,
.enroll-form select {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 14px 18px;
  color: var(--text-primary);
  font-size: 0.95rem;
  outline: none;
  transition: var(--transition);
  width: 100%;
}

.enroll-form input:focus,
.enroll-form select:focus {
  border-color: var(--accent-green);
  box-shadow: 0 0 0 3px rgba(184, 243, 105, 0.1);
}

.enroll-form select option { background: var(--bg-card); }

.cta-note {
  margin-top: 16px;
  font-size: 0.82rem;
  color: var(--text-muted);
}

/* ===== FOOTER ===== */
.footer {
  background: var(--bg-primary);
  border-top: 1px solid var(--border);
  padding: 80px 0 32px;
}

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

.footer-brand p {
  color: var(--text-secondary);
  font-size: 0.88rem;
  line-height: 1.7;
  margin: 16px 0 24px;
  max-width: 280px;
}

.social-links {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.social-btn {
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  font-weight: 600;
  transition: var(--transition);
}

.social-btn:hover {
  border-color: var(--accent-green);
  color: var(--accent-green);
}

.footer-col h4 {
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-primary);
  margin-bottom: 20px;
}

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

.footer-col a {
  font-size: 0.88rem;
  color: var(--text-secondary);
  transition: var(--transition);
}

.footer-col a:hover { color: var(--accent-green); }

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

.footer-bottom p {
  font-size: 0.82rem;
  color: var(--text-muted);
}

.footer-tagline {
  color: var(--accent-green) !important;
  font-style: italic;
}

/* ===== BACK TO TOP ===== */
.back-top {
  position: fixed;
  bottom: 32px; right: 32px;
  width: 48px; height: 48px;
  background: var(--accent-green);
  color: var(--bg-primary);
  border-radius: 50%;
  font-size: 1.2rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transform: translateY(20px);
  transition: var(--transition);
  z-index: 999;
  box-shadow: 0 4px 20px rgba(184, 243, 105, 0.3);
}

.back-top.visible {
  opacity: 1;
  transform: translateY(0);
}

.back-top:hover {
  background: #d4ff7a;
  transform: translateY(-3px);
}

/* ===== TOAST ===== */
.toast {
  position: fixed;
  bottom: 32px; left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: var(--bg-card);
  border: 1px solid var(--accent-green);
  color: var(--text-primary);
  padding: 14px 24px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  font-size: 0.9rem;
  z-index: 9999;
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 8px 32px rgba(0,0,0,0.4);
}

.toast.show {
  transform: translateX(-50%) translateY(0);
}

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

.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

/* ===== COURSES PAGE ===== */
.page-hero {
  padding: 140px 0 80px;
  background: var(--bg-secondary);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(123,104,238,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(123,104,238,0.05) 1px, transparent 1px);
  background-size: 60px 60px;
}

.page-hero-content { position: relative; z-index: 2; }

.courses-page-section {
  padding: 80px 0;
}

.courses-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 32px;
  gap: 16px;
  flex-wrap: wrap;
}

.toolbar-search {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 10px 16px;
  flex: 1;
  max-width: 400px;
}

.toolbar-search input {
  background: none;
  border: none;
  outline: none;
  color: var(--text-primary);
  font-size: 0.9rem;
  width: 100%;
}

.toolbar-search input::placeholder { color: var(--text-muted); }

.toolbar-filters {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.courses-count {
  color: var(--text-muted);
  font-size: 0.88rem;
}

/* ===== ABOUT PAGE ===== */
.about-hero {
  padding: 140px 0 80px;
  background: var(--bg-secondary);
  position: relative;
  overflow: hidden;
}

.about-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(123,104,238,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(123,104,238,0.05) 1px, transparent 1px);
  background-size: 60px 60px;
}

.about-hero-inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.about-hero-text h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 20px;
}

.about-hero-text p {
  color: var(--text-secondary);
  font-size: 1.05rem;
  line-height: 1.8;
  margin-bottom: 32px;
}

.about-stats-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.about-stat {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 24px;
  text-align: center;
}

.about-stat-num {
  font-family: var(--font-display);
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--accent-green);
  display: block;
}

.about-stat-label {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-top: 4px;
}

.mission-section {
  padding: 100px 0;
}

.mission-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.mission-text h2 {
  font-family: var(--font-display);
  font-size: 2.2rem;
  font-weight: 800;
  margin-bottom: 20px;
}

.mission-text p {
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 16px;
}

.mission-values {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.value-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 20px;
  transition: var(--transition);
}

.value-item:hover {
  border-color: var(--border-bright);
  transform: translateX(4px);
}

.value-icon { font-size: 1.8rem; flex-shrink: 0; }

.value-item h4 {
  font-family: var(--font-display);
  font-weight: 700;
  margin-bottom: 4px;
}

.value-item p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin: 0;
}

.team-section {
  padding: 100px 0;
  background: var(--bg-secondary);
}

.team-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.team-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 20px;
  text-align: center;
  transition: var(--transition);
}

.team-card:hover {
  border-color: var(--border-bright);
  transform: translateY(-4px);
}

.team-avatar {
  width: 72px; height: 72px;
  border-radius: 50%;
  margin: 0 auto 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--bg-primary);
}

.ta-1 { background: linear-gradient(135deg, var(--accent-green), var(--accent-purple)); }
.ta-2 { background: linear-gradient(135deg, var(--accent-orange), var(--accent-pink)); }
.ta-3 { background: linear-gradient(135deg, var(--accent-purple), var(--accent-green)); }
.ta-4 { background: linear-gradient(135deg, var(--accent-pink), var(--accent-orange)); }

.team-card h4 {
  font-family: var(--font-display);
  font-weight: 700;
  margin-bottom: 4px;
}

.team-card span {
  font-size: 0.8rem;
  color: var(--accent-green);
  font-weight: 600;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  .categories-grid { grid-template-columns: repeat(4, 1fr); }
  .courses-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .hero { flex-direction: column; text-align: center; }
  .hero-visual { display: none; }
  .hero-stats { justify-content: center; }
  .hero-search .search-box { max-width: 100%; }
  .about-hero-inner { grid-template-columns: 1fr; }
  .mission-grid { grid-template-columns: 1fr; }
  .team-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: fixed;
    top: 70px; left: 0; right: 0;
    background: rgba(13, 11, 30, 0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 24px;
    gap: 8px;
    border-bottom: 1px solid var(--border);
  }
  .nav-links.open { display: flex; }
  .hamburger { display: flex; }
  .categories-grid { grid-template-columns: repeat(2, 1fr); }
  .courses-grid { grid-template-columns: 1fr; }
  .steps-grid { flex-direction: column; }
  .step-connector { transform: rotate(90deg); }
  .testimonials-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .team-grid { grid-template-columns: repeat(2, 1fr); }
  .about-stats-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 480px) {
  .categories-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-stats { flex-direction: column; gap: 16px; }
  .stat-divider { display: none; }
  .filter-tabs { gap: 6px; }
  .filter-btn { padding: 8px 14px; font-size: 0.8rem; }
  .team-grid { grid-template-columns: 1fr 1fr; }
}