/* ==========================================================================
   ASNIFY AI - DESIGN SYSTEM & LANDING PAGE STYLESHEET
   Aesthetics: Deep Navy, Glassmorphism, Emerald & Gold Accents, EdTech Premium
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Merriweather:ital,wght@0,400;0,700;1,400&family=Plus+Jakarta+Sans:wght@400;500;600;700;800&display=swap');

:root {
  /* Color Tokens */
  --bg-dark: #090D16;
  --bg-surface: #0F172A;
  --bg-card: rgba(30, 41, 59, 0.75);
  --bg-card-hover: rgba(30, 41, 59, 0.95);
  --border-color: rgba(255, 255, 255, 0.1);
  --border-gold: rgba(245, 158, 11, 0.3);
  
  --text-main: #F8FAFC;
  --text-muted: #94A3B8;
  --text-dim: #64748B;
  
  --primary-emerald: #10B981;
  --primary-emerald-glow: rgba(16, 185, 129, 0.3);
  --accent-gold: #F59E0B;
  --accent-gold-light: #FBBF24;
  --accent-cyan: #38BDF8;
  
  --font-main: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-exam: 'Merriweather', Georgia, serif;
  
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-full: 9999px;

  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 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 {
  background-color: var(--bg-dark);
  color: var(--text-main);
  font-family: var(--font-main);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* Typography Helpers */
h1, h2, h3, h4, h5 {
  color: var(--text-main);
  font-family: var(--font-main);
  font-weight: 800;
  line-height: 1.2;
}

.gradient-text {
  background: linear-gradient(135deg, #FFFFFF 0%, #CBD5E1 50%, var(--accent-cyan) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.gradient-gold {
  background: linear-gradient(135deg, #FFE259 0%, #FFA751 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.gradient-emerald {
  background: linear-gradient(135deg, #34D399 0%, #059669 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Container */
.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.85rem 1.8rem;
  font-size: 1rem;
  font-weight: 700;
  border-radius: var(--radius-md);
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition-normal);
  border: 1px solid transparent;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-gold) 0%, #D97706 100%);
  color: #0F172A;
  box-shadow: 0 4px 20px rgba(245, 158, 11, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(245, 158, 11, 0.45);
  background: linear-gradient(135deg, #FBBF24 0%, #F59E0B 100%);
}

.btn-emerald {
  background: linear-gradient(135deg, var(--primary-emerald) 0%, #059669 100%);
  color: #FFFFFF;
  box-shadow: 0 4px 20px var(--primary-emerald-glow);
}

.btn-emerald:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(16, 185, 129, 0.5);
}

.btn-outline {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-main);
  border: 1px solid var(--border-color);
  backdrop-filter: blur(10px);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: var(--text-muted);
}

/* Top Notification Banner */
.top-bar {
  background: linear-gradient(90deg, #1E1B4B 0%, #0F172A 50%, #064E3B 100%);
  border-bottom: 1px solid rgba(245, 158, 11, 0.2);
  padding: 0.5rem 0;
  font-size: 0.875rem;
  text-align: center;
}

.top-bar-content {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.badge-live {
  background: rgba(239, 68, 68, 0.2);
  color: #F87171;
  padding: 0.15rem 0.6rem;
  border-radius: var(--radius-full);
  font-weight: 700;
  font-size: 0.75rem;
  border: 1px solid rgba(239, 68, 68, 0.4);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}

/* Countdown Timer */
.countdown-box {
  display: inline-flex;
  gap: 0.4rem;
  font-weight: 700;
}

.count-unit {
  background: rgba(15, 23, 42, 0.8);
  padding: 0.1rem 0.4rem;
  border-radius: var(--radius-sm);
  color: var(--accent-gold);
  border: 1px solid rgba(245, 158, 11, 0.3);
}

/* Navbar */
.navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(9, 13, 22, 0.85);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  padding: 1rem 0;
  transition: var(--transition-normal);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
}

.brand-logo img {
  height: 48px;
  width: auto;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}

.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  transition: var(--transition-fast);
}

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

.nav-cta {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-main);
  font-size: 1.5rem;
  cursor: pointer;
}

/* Hero Section */
.hero {
  position: relative;
  padding: 5rem 0 4rem;
  background: radial-gradient(circle at 50% 20%, rgba(16, 185, 129, 0.12) 0%, rgba(245, 158, 11, 0.05) 40%, transparent 70%);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 3.5rem;
  align-items: center;
}

.hero-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 1rem;
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.3);
  border-radius: var(--radius-full);
  color: var(--primary-emerald);
  font-size: 0.875rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
}

.hero-title {
  font-size: 3.2rem;
  line-height: 1.15;
  margin-bottom: 1.25rem;
  letter-spacing: -0.02em;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-muted);
  margin-bottom: 2rem;
  max-width: 580px;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 2.5rem;
  flex-wrap: wrap;
}

.trust-stats {
  display: flex;
  align-items: center;
  gap: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-color);
}

.stat-item h4 {
  font-size: 1.6rem;
  color: var(--accent-gold);
}

.stat-item p {
  font-size: 0.85rem;
  color: var(--text-dim);
}

/* Live Interactive Mockup Card */
.mockup-card {
  background: var(--bg-card);
  border: 1px solid var(--border-gold);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  backdrop-filter: blur(20px);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5), 0 0 30px rgba(245, 158, 11, 0.1);
  position: relative;
}

.mockup-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 1rem;
}

.mockup-dots {
  display: flex;
  gap: 6px;
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}
.dot-red { background: #EF4444; }
.dot-yellow { background: #F59E0B; }
.dot-green { background: #10B981; }

.mockup-badge {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--primary-emerald);
  background: rgba(16, 185, 129, 0.15);
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-full);
}

/* Exam Trial Widget Inside Mockup */
.exam-preview-box {
  background: #0F172A;
  border-radius: var(--radius-md);
  padding: 1.25rem;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.exam-meta {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--accent-cyan);
  margin-bottom: 0.75rem;
  font-weight: 700;
}

.exam-question {
  font-family: var(--font-exam);
  font-size: 0.95rem;
  color: var(--text-main);
  margin-bottom: 1rem;
  line-height: 1.5;
}

.exam-options {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.opt-btn {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  padding: 0.6rem 0.8rem;
  border-radius: var(--radius-sm);
  text-align: left;
  font-size: 0.85rem;
  cursor: pointer;
  transition: var(--transition-fast);
}

.opt-btn:hover, .opt-btn.active {
  background: rgba(16, 185, 129, 0.15);
  border-color: var(--primary-emerald);
  color: var(--text-main);
}

.ai-analysis-output {
  margin-top: 1rem;
  padding: 1rem;
  background: rgba(16, 185, 129, 0.08);
  border: 1px dashed var(--primary-emerald);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  display: none;
}

.ai-analysis-output.show {
  display: block;
  animation: fadeIn 0.4s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Features Section */
.features {
  padding: 5rem 0;
  background: var(--bg-surface);
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 3.5rem;
}

.section-tag {
  color: var(--accent-gold);
  font-weight: 800;
  font-size: 0.85rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}

.section-title {
  font-size: 2.3rem;
  margin-bottom: 1rem;
}

.section-desc {
  color: var(--text-muted);
  font-size: 1.05rem;
}

/* Feature Tabs */
.tabs-header {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 2.5rem;
  flex-wrap: wrap;
}

.tab-btn {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-full);
  font-weight: 700;
  font-size: 0.95rem;
  cursor: pointer;
  transition: var(--transition-normal);
}

.tab-btn.active, .tab-btn:hover {
  background: linear-gradient(135deg, var(--accent-gold) 0%, #D97706 100%);
  color: #0F172A;
  border-color: transparent;
  box-shadow: 0 4px 15px rgba(245, 158, 11, 0.3);
}

/* Feature Cards Grid */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.75rem;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  transition: var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.feature-card:hover {
  transform: translateY(-4px);
  border-color: var(--primary-emerald);
  box-shadow: 0 10px 30px rgba(16, 185, 129, 0.15);
  background: var(--bg-card-hover);
}

.feature-icon {
  width: 50px;
  height: 50px;
  border-radius: 12px;
  background: rgba(16, 185, 129, 0.15);
  color: var(--primary-emerald);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  margin-bottom: 1.25rem;
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.feature-card.gold-card .feature-icon {
  background: rgba(245, 158, 11, 0.15);
  color: var(--accent-gold);
  border-color: rgba(245, 158, 11, 0.3);
}

.feature-card.cyan-card .feature-icon {
  background: rgba(56, 189, 248, 0.15);
  color: var(--accent-cyan);
  border-color: rgba(56, 189, 248, 0.3);
}

.feature-title {
  font-size: 1.2rem;
  margin-bottom: 0.6rem;
}

.feature-desc {
  color: var(--text-muted);
  font-size: 0.925rem;
  line-height: 1.55;
}

.feature-tag {
  display: inline-block;
  margin-top: 1rem;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--primary-emerald);
  letter-spacing: 0.5px;
}

/* Pricing Section */
.pricing {
  padding: 5rem 0;
  position: relative;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  align-items: center;
}

.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2.25rem;
  position: relative;
  transition: var(--transition-normal);
}

.pricing-card.popular {
  border: 2px solid var(--accent-gold);
  background: linear-gradient(180deg, rgba(30, 41, 59, 0.9) 0%, rgba(15, 23, 42, 0.95) 100%);
  box-shadow: 0 15px 40px rgba(245, 158, 11, 0.25);
  transform: scale(1.03);
}

.popular-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(90deg, #F59E0B, #D97706);
  color: #0F172A;
  padding: 0.25rem 1rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 1px;
  text-transform: uppercase;
}

.price-title {
  font-size: 1.35rem;
  margin-bottom: 0.5rem;
}

.price-desc {
  color: var(--text-dim);
  font-size: 0.875rem;
  margin-bottom: 1.5rem;
}

.price-amount {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 1.5rem;
}

.price-amount span {
  font-size: 1rem;
  color: var(--text-muted);
  font-weight: 500;
}

.price-features {
  list-style: none;
  margin-bottom: 2rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.price-features li {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.price-features li i {
  color: var(--primary-emerald);
}

/* Testimonials */
.testimonials {
  padding: 5rem 0;
  background: var(--bg-surface);
}

.testi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.75rem;
}

.testi-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.75rem;
}

.testi-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
}

.testi-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent-cyan), var(--primary-emerald));
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  color: #0F172A;
}

.testi-info h4 {
  font-size: 1rem;
}

.testi-info p {
  font-size: 0.8rem;
  color: var(--primary-emerald);
}

.testi-text {
  color: var(--text-muted);
  font-size: 0.925rem;
  font-style: italic;
  line-height: 1.6;
}

/* FAQ Accordion */
.faq {
  padding: 5rem 0;
}

.faq-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.faq-question {
  width: 100%;
  padding: 1.25rem 1.5rem;
  background: none;
  border: none;
  color: var(--text-main);
  font-size: 1.05rem;
  font-weight: 700;
  text-align: left;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-answer {
  padding: 0 1.5rem 1.25rem;
  color: var(--text-muted);
  font-size: 0.95rem;
  display: none;
  line-height: 1.6;
}

.faq-item.active .faq-answer {
  display: block;
  animation: fadeIn 0.3s ease;
}

.faq-item.active .faq-icon {
  transform: rotate(180deg);
}

/* CTA Footer Section */
.cta-banner {
  padding: 4rem 0;
  background: linear-gradient(135deg, #0F172A 0%, #1E1B4B 50%, #064E3B 100%);
  border-top: 1px solid var(--border-gold);
  border-bottom: 1px solid var(--border-gold);
  text-align: center;
}

.cta-banner h2 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.cta-banner p {
  color: var(--text-muted);
  font-size: 1.1rem;
  max-width: 600px;
  margin: 0 auto 2rem;
}

/* Footer */
.footer {
  padding: 3rem 0 2rem;
  background: var(--bg-dark);
  border-top: 1px solid var(--border-color);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.footer-bottom {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  color: var(--text-dim);
  font-size: 0.85rem;
}

/* Responsive Styles */
@media (max-width: 992px) {
  .hero-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-subtitle {
    margin-left: auto;
    margin-right: auto;
  }

  .hero-actions {
    justify-content: center;
  }

  .trust-stats {
    justify-content: center;
  }

  .pricing-card.popular {
    transform: none;
  }
}

@media (max-width: 768px) {
  .hero-title {
    font-size: 2.2rem;
  }

  .nav-links {
    display: none;
  }

  .mobile-toggle {
    display: block;
  }

  .nav-links.mobile-open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background: var(--bg-surface);
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
  }
}