/* ── AI FlowMaster Landing — Design System ────────────────────────── */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

/* ── Tokens ──────────────────────────────────────────────────────── */
:root {
  --bg-primary: #0a0a1a;
  --bg-secondary: #111128;
  --bg-card: rgba(255, 255, 255, 0.04);
  --bg-card-hover: rgba(255, 255, 255, 0.08);
  --bg-glass: rgba(255, 255, 255, 0.06);
  --border-glass: rgba(255, 255, 255, 0.1);

  --text-primary: #f0f0f5;
  --text-secondary: #9999bb;
  --text-muted: #666688;

  --accent-purple: #8b5cf6;
  --accent-blue: #3b82f6;
  --accent-cyan: #06b6d4;
  --accent-pink: #ec4899;
  --accent-green: #10b981;
  --accent-yellow: #f59e0b;

  --gradient-main: linear-gradient(135deg, var(--accent-purple), var(--accent-blue), var(--accent-cyan));
  --gradient-card: linear-gradient(135deg, rgba(139, 92, 246, 0.15), rgba(6, 182, 212, 0.05));
  --gradient-hero: linear-gradient(180deg, transparent 0%, var(--bg-primary) 100%);

  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;

  --shadow-glow: 0 0 60px rgba(139, 92, 246, 0.15);
  --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.3);

  --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --max-width: 1200px;
}

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

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

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

a {
  color: inherit;
  text-decoration: none;
}

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

ul {
  list-style: none;
}

/* ── Utility ─────────────────────────────────────────────────────── */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

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

.section {
  padding: 100px 0;
  position: relative;
}

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

.section-subtitle {
  text-align: center;
  color: var(--text-secondary);
  font-size: 1.1rem;
  max-width: 600px;
  margin: 0 auto 60px;
}

/* ── Fade-in animations ──────────────────────────────────────────── */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

.fade-in-delay-1 {
  transition-delay: 0.1s;
}

.fade-in-delay-2 {
  transition-delay: 0.2s;
}

.fade-in-delay-3 {
  transition-delay: 0.3s;
}

/* ── Navigation ──────────────────────────────────────────────────── */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 16px 0;
  transition: background 0.3s, backdrop-filter 0.3s;
}

.navbar.scrolled {
  background: rgba(10, 10, 26, 0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-glass);
}

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

.navbar-logo {
  font-size: 1.3rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  gap: 10px;
}

.nav-logo-img {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  object-fit: cover;
}

.navbar-links {
  display: flex;
  align-items: center;
  gap: 28px;
}

.navbar-links a {
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.3s;
}

.navbar-links a:hover {
  color: var(--text-primary);
}

.lang-switcher {
  display: flex;
  gap: 4px;
  background: var(--bg-glass);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-sm);
  padding: 3px;
}

.lang-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  font-family: var(--font);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 6px 12px;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.3s;
}

.lang-btn.active {
  background: var(--accent-purple);
  color: white;
}

.lang-btn:hover:not(.active) {
  color: var(--text-primary);
}

/* Mobile menu */
.menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.5rem;
  cursor: pointer;
}

/* ── Hero ────────────────────────────────────────────────────────── */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  padding-top: 80px;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -20%;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(139, 92, 246, 0.12) 0%, transparent 70%);
  pointer-events: none;
}

.hero .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.hero-content {
  z-index: 1;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-glass);
  border: 1px solid var(--border-glass);
  border-radius: 100px;
  padding: 8px 20px;
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 24px;
}

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

@keyframes pulse-dot {

  0%,
  100% {
    opacity: 1;
  }

  50% {
    opacity: 0.4;
  }
}

.hero h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 900;
  line-height: 1.1;
  margin-bottom: 20px;
}

.hero p {
  font-size: 1.15rem;
  color: var(--text-secondary);
  margin-bottom: 36px;
  max-width: 480px;
}

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

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--gradient-main);
  color: white;
  font-family: var(--font);
  font-size: 1rem;
  font-weight: 600;
  padding: 16px 32px;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: transform 0.3s, box-shadow 0.3s;
  text-decoration: none;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(139, 92, 246, 0.4);
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: transparent;
  color: var(--text-primary);
  font-family: var(--font);
  font-size: 1rem;
  font-weight: 600;
  padding: 16px 32px;
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.3s;
  text-decoration: none;
}

.btn-outline:hover {
  background: var(--bg-glass);
  border-color: var(--accent-purple);
}

.hero-image {
  position: relative;
  z-index: 1;
}

.hero-image img {
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-glow);
}

.hero-stats {
  display: flex;
  gap: 40px;
  margin-top: 48px;
}

.hero-stat-value {
  font-size: 1.6rem;
  font-weight: 800;
}

.hero-stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* ── Features ────────────────────────────────────────────────────── */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 0;
  overflow: hidden;
  transition: transform 0.4s, box-shadow 0.4s, border-color 0.4s;
}

.feature-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-glow);
  border-color: rgba(139, 92, 246, 0.3);
}

.feature-card-image {
  width: 100%;
  height: 220px;
  object-fit: cover;
}

.feature-card-content {
  padding: 28px;
}

.feature-card-icon {
  font-size: 2rem;
  margin-bottom: 12px;
}

.feature-card h3 {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.feature-card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.feature-tag {
  display: inline-block;
  background: rgba(139, 92, 246, 0.15);
  color: var(--accent-purple);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 100px;
  margin-top: 12px;
}

/* ── How it works ────────────────────────────────────────────────── */
.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  position: relative;
}

.steps::before {
  content: '';
  position: absolute;
  top: 40px;
  left: 12.5%;
  right: 12.5%;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-purple), var(--accent-cyan));
  opacity: 0.3;
}

.step {
  text-align: center;
  position: relative;
  z-index: 1;
}

.step-number {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: var(--gradient-card);
  border: 2px solid var(--border-glass);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  margin: 0 auto 20px;
  transition: transform 0.3s, border-color 0.3s;
}

.step:hover .step-number {
  transform: scale(1.1);
  border-color: var(--accent-purple);
}

.step h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.step p {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* ── Pricing ─────────────────────────────────────────────────────── */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 36px;
  transition: all 0.4s;
  position: relative;
}

.pricing-card.featured {
  border-color: var(--accent-purple);
  background: var(--gradient-card);
}

.pricing-card.featured::before {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: var(--radius-lg);
  padding: 1px;
  background: var(--gradient-main);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
}

.pricing-card:hover {
  transform: translateY(-4px);
}

.pricing-card-header {
  margin-bottom: 24px;
}

.pricing-card h3 {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.pricing-card .price-range {
  font-size: 1.1rem;
  color: var(--accent-cyan);
  font-weight: 600;
}

.pricing-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.pricing-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.pricing-list li::before {
  content: '✓';
  color: var(--accent-green);
  font-weight: 700;
}

/* ── Payment ─────────────────────────────────────────────────────── */
.payment-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

.payment-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 40px;
}

.payment-card-icon {
  font-size: 3rem;
  margin-bottom: 20px;
}

.payment-card h3 {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.payment-card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 20px;
}

.payment-steps {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.payment-step {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.payment-step-num {
  min-width: 32px;
  height: 32px;
  border-radius: 50%;
  background: rgba(139, 92, 246, 0.15);
  color: var(--accent-purple);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.85rem;
}

.payment-step-text {
  color: var(--text-secondary);
  font-size: 0.9rem;
  padding-top: 4px;
}

/* ── Gallery ─────────────────────────────────────────────────────── */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.gallery-item {
  border-radius: var(--radius-md);
  overflow: hidden;
  position: relative;
  aspect-ratio: 1;
  cursor: pointer;
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s;
}

.gallery-item:hover img {
  transform: scale(1.08);
}

.gallery-item::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(transparent 60%, rgba(0, 0, 0, 0.6));
  opacity: 0;
  transition: opacity 0.3s;
}

.gallery-item:hover::after {
  opacity: 1;
}

.gallery-label {
  position: absolute;
  bottom: 12px;
  left: 12px;
  font-size: 0.8rem;
  font-weight: 600;
  color: white;
  z-index: 2;
  opacity: 0;
  transition: opacity 0.3s;
}

.gallery-item:hover .gallery-label {
  opacity: 1;
}

/* ── Support ─────────────────────────────────────────────────────── */
.support-box {
  max-width: 600px;
  margin: 0 auto;
  text-align: center;
  background: var(--gradient-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-xl);
  padding: 60px 40px;
}

.support-icon {
  font-size: 3.5rem;
  margin-bottom: 20px;
}

.support-box h3 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.support-box p {
  color: var(--text-secondary);
  margin-bottom: 28px;
}

/* ── Footer ──────────────────────────────────────────────────────── */
.footer {
  border-top: 1px solid var(--border-glass);
  padding: 40px 0;
}

.footer .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-copy {
  color: var(--text-muted);
  font-size: 0.85rem;
}

.footer-links {
  display: flex;
  gap: 24px;
}

.footer-links a {
  color: var(--text-muted);
  font-size: 0.85rem;
  transition: color 0.3s;
}

.footer-links a:hover {
  color: var(--text-primary);
}

/* ── Modal ───────────────────────────────────────────────────────── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(8px);
  z-index: 200;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.modal-overlay.active {
  display: flex;
}

.modal {
  background: var(--bg-secondary);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  max-width: 700px;
  width: 100%;
  max-height: 80vh;
  overflow-y: auto;
  padding: 40px;
}

.modal h2 {
  font-size: 1.5rem;
  margin-bottom: 20px;
}

.modal p,
.modal li {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.7;
}

.modal-close {
  float: right;
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1.5rem;
  cursor: pointer;
  transition: color 0.3s;
}

.modal-close:hover {
  color: var(--text-primary);
}

/* ── Responsive ──────────────────────────────────────────────────── */
@media (max-width: 900px) {
  .hero .container {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero p {
    margin: 0 auto 36px;
  }

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

  .hero-image {
    display: none;
  }

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

  .features-grid {
    grid-template-columns: 1fr;
    max-width: 400px;
    margin: 0 auto;
  }

  .steps {
    grid-template-columns: 1fr 1fr;
  }

  .steps::before {
    display: none;
  }

  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 400px;
    margin: 0 auto;
  }

  .payment-grid {
    grid-template-columns: 1fr;
  }

  .gallery-grid {
    grid-template-columns: 1fr 1fr;
  }

  .navbar-links {
    display: none;
  }

  .navbar-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(10, 10, 26, 0.95);
    backdrop-filter: blur(20px);
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-glass);
  }

  .menu-toggle {
    display: block;
  }
}

@media (max-width: 600px) {
  .section {
    padding: 60px 0;
  }

  .steps {
    grid-template-columns: 1fr;
  }

  .gallery-grid {
    grid-template-columns: 1fr;
  }

  .hero-stats {
    flex-direction: column;
    gap: 16px;
  }
}