/* NOYER - Modern SaaS Design System
   Inspired by Runway ML
   ================================== */

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

/* ===== CSS VARIABLES ===== */
:root {
  /* Colors */
  --bg-primary: #0a0a0a;
  --bg-secondary: #111111;
  --bg-tertiary: #1a1a1a;
  --bg-card: rgba(255, 255, 255, 0.03);
  --bg-card-hover: rgba(255, 255, 255, 0.06);

  /* Text */
  --text-primary: #ffffff;
  --text-secondary: #a1a1aa;
  --text-muted: #71717a;

  /* Accent - Green */
  --accent-start: #10b981;
  --accent-mid: #22c55e;
  --accent-end: #34d399;
  --accent-gradient: linear-gradient(135deg, var(--accent-start) 0%, var(--accent-mid) 50%, var(--accent-end) 100%);
  --accent-gradient-hover: linear-gradient(135deg, #059669 0%, #16a34a 50%, #10b981 100%);

  /* Secondary accent */
  --accent-blue: #10b981;
  --accent-cyan: #34d399;

  /* Borders */
  --border-color: rgba(255, 255, 255, 0.08);
  --border-color-hover: rgba(255, 255, 255, 0.15);

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 60px rgba(16, 185, 129, 0.15);
  --shadow-glow-hover: 0 0 80px rgba(16, 185, 129, 0.25);

  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-2xl: 4rem;
  --space-3xl: 6rem;

  /* Border radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;
  --transition-slow: 0.4s ease;

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  /* Container */
  --container-sm: 640px;
  --container-md: 768px;
  --container-lg: 1024px;
  --container-xl: 1200px;
  --container-2xl: 1400px;
}

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

/* ===== BASE STYLES ===== */
html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Background gradient effect */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background:
    radial-gradient(ellipse 80% 50% at 50% -20%, rgba(16, 185, 129, 0.12), transparent),
    radial-gradient(ellipse 60% 40% at 100% 0%, rgba(34, 197, 94, 0.08), transparent),
    radial-gradient(ellipse 60% 40% at 0% 100%, rgba(52, 211, 153, 0.06), transparent);
  pointer-events: none;
  z-index: -1;
}

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

h1 {
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 800;
}

h2 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
}

h3 {
  font-size: clamp(1.25rem, 3vw, 1.5rem);
}

p {
  color: var(--text-secondary);
  font-size: 1rem;
  line-height: 1.7;
}

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition-fast);
}

/* Gradient text */
.gradient-text {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ===== LAYOUT ===== */
.container {
  width: 100%;
  max-width: var(--container-xl);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.container-sm {
  max-width: var(--container-sm);
}

.container-md {
  max-width: var(--container-md);
}

.container-lg {
  max-width: var(--container-lg);
}

/* ===== HEADER / NAVIGATION ===== */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: var(--space-md) var(--space-lg);
  background: rgba(10, 10, 10, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  transition: var(--transition-normal);
}

.nav-container {
  max-width: var(--container-2xl);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

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

.nav-logo img {
  height: 40px;
  width: auto;
}

.nav-logo span {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

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

.nav-link {
  color: var(--text-secondary);
  font-size: 0.95rem;
  font-weight: 500;
  transition: var(--transition-fast);
}

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

.nav-cta {
  padding: 0.6rem 1.25rem;
  background: var(--accent-gradient);
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 0.9rem;
  color: white;
  transition: var(--transition-normal);
}

.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 20px rgba(16, 185, 129, 0.4);
}

/* Mobile nav */
@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
}

/* ===== HERO SECTION ===== */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-3xl) var(--space-md);
  position: relative;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: 0.5rem 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: var(--space-lg);
  animation: fadeInUp 0.6s ease;
}

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

.hero-title {
  max-width: 900px;
  margin-bottom: var(--space-md);
  animation: fadeInUp 0.6s ease 0.1s both;
}

.hero-subtitle {
  max-width: 600px;
  font-size: 1.2rem;
  color: var(--text-secondary);
  margin-bottom: var(--space-xl);
  animation: fadeInUp 0.6s ease 0.2s both;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  justify-content: center;
  animation: fadeInUp 0.6s ease 0.3s both;
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  padding: 0.875rem 1.75rem;
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: var(--transition-normal);
  text-decoration: none;
}

.btn-primary {
  background: var(--accent-gradient);
  color: white;
  box-shadow: 0 4px 20px rgba(16, 185, 129, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(16, 185, 129, 0.4);
}

.btn-secondary {
  background: var(--bg-card);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-color-hover);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

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

.btn-lg {
  padding: 1rem 2rem;
  font-size: 1.1rem;
}

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
}

.btn:disabled, .btn.disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none !important;
  box-shadow: none !important;
}

.btn-icon {
  width: 20px;
  height: 20px;
}

/* ===== CARDS ===== */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  transition: var(--transition-normal);
}

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

.card-glass {
  background: rgba(255, 255, 255, 0.02);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

/* ===== PRICING CARDS ===== */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--space-lg);
  margin-top: var(--space-xl);
}

.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  position: relative;
  transition: var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.pricing-card:hover {
  border-color: var(--border-color-hover);
  transform: translateY(-8px);
  box-shadow: var(--shadow-glow);
}

.pricing-card.featured {
  border-color: rgba(16, 185, 129, 0.3);
  background: linear-gradient(180deg, rgba(16, 185, 129, 0.08) 0%, var(--bg-card) 100%);
}

.pricing-card.featured::before {
  content: 'Populaire';
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent-gradient);
  color: white;
  padding: 0.4rem 1rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.pricing-header {
  text-align: center;
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid var(--border-color);
}

.pricing-name {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: var(--space-xs);
}

.pricing-price {
  font-size: 3rem;
  font-weight: 800;
  line-height: 1;
  margin-bottom: var(--space-xs);
}

.pricing-price span {
  font-size: 1rem;
  font-weight: 400;
  color: var(--text-muted);
}

.pricing-desc {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.pricing-features {
  flex-grow: 1;
  margin-bottom: var(--space-lg);
}

.pricing-feature {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  padding: var(--space-xs) 0;
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.pricing-feature svg {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  color: #10b981;
}

.pricing-feature.disabled {
  color: var(--text-muted);
  text-decoration: line-through;
}

.pricing-feature.disabled svg {
  color: var(--text-muted);
}

/* ===== FEATURE SECTIONS ===== */
.features {
  padding: var(--space-3xl) var(--space-md);
}

.features-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto var(--space-2xl);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-lg);
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  transition: var(--transition-normal);
}

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

.feature-icon {
  width: 48px;
  height: 48px;
  background: var(--accent-gradient);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-md);
  font-size: 1.5rem;
}

.feature-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: var(--space-sm);
}

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

/* ===== FORMS ===== */
.form-group {
  margin-bottom: var(--space-md);
}

.form-label {
  display: block;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: var(--space-xs);
}

.form-input {
  width: 100%;
  padding: 0.875rem 1rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 1rem;
  font-family: var(--font-sans);
  transition: var(--transition-fast);
  outline: none;
}

.form-input:focus {
  border-color: var(--accent-start);
  box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.15);
}

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

textarea.form-input {
  min-height: 120px;
  resize: vertical;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-md);
}

/* Checkbox */
.form-checkbox {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  cursor: pointer;
}

.form-checkbox input {
  width: 20px;
  height: 20px;
  accent-color: var(--accent-start);
  cursor: pointer;
}

.form-checkbox label {
  font-size: 0.95rem;
  color: var(--text-secondary);
  cursor: pointer;
}

/* ===== STEPS / PROGRESS ===== */
.steps {
  display: flex;
  justify-content: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-xl);
}

.step-indicator {
  width: 40px;
  height: 4px;
  background: var(--bg-tertiary);
  border-radius: var(--radius-full);
  transition: var(--transition-normal);
}

.step-indicator.active {
  background: var(--accent-gradient);
}

.step-indicator.completed {
  background: #10b981;
}

/* Day selection */
.days-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: var(--space-sm);
  margin: var(--space-lg) 0;
}

.day-btn {
  padding: var(--space-md);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition-normal);
}

.day-btn:hover {
  border-color: var(--border-color-hover);
  background: var(--bg-card-hover);
}

.day-btn.selected {
  background: var(--accent-gradient);
  border-color: transparent;
  color: white;
  font-weight: 600;
  box-shadow: 0 4px 20px rgba(16, 185, 129, 0.3);
}

/* ===== FOOTER ===== */
.footer {
  padding: var(--space-2xl) var(--space-md);
  border-top: 1px solid var(--border-color);
  margin-top: var(--space-3xl);
}

.footer-content {
  max-width: var(--container-xl);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: var(--space-md);
}

.footer-logo {
  font-size: 1.5rem;
  font-weight: 700;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-sm) var(--space-md);
}

.footer-link {
  color: var(--text-muted);
  font-size: 0.9rem;
  transition: var(--transition-fast);
}

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

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

/* ===== SECTIONS ===== */
.section {
  padding: var(--space-3xl) var(--space-md);
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto var(--space-2xl);
}

.section-title {
  margin-bottom: var(--space-sm);
}

.section-subtitle {
  color: var(--text-secondary);
  font-size: 1.1rem;
}

/* ===== PAGE WRAPPER ===== */
.page-wrapper {
  min-height: 100vh;
  padding-top: 100px;
}

.page-header {
  text-align: center;
  padding: var(--space-2xl) var(--space-md);
}

.page-title {
  margin-bottom: var(--space-sm);
}

.page-subtitle {
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* ===== STATUS MESSAGES ===== */
.status {
  padding: var(--space-sm);
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  margin-top: var(--space-md);
}

.status.success {
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.3);
  color: #10b981;
}

.status.error {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: #ef4444;
}

.status.warning {
  background: rgba(245, 158, 11, 0.1);
  border: 1px solid rgba(245, 158, 11, 0.3);
  color: #f59e0b;
}

/* ===== UTILITIES ===== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-xs { margin-top: var(--space-xs); }
.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }

.mb-xs { margin-bottom: var(--space-xs); }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.mb-xl { margin-bottom: var(--space-xl); }

.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.gap-lg { gap: var(--space-lg); }

.hidden { display: none; }

/* ===== ANIMATIONS ===== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

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

@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

.animate-fadeIn {
  animation: fadeIn 0.6s ease;
}

.animate-fadeInUp {
  animation: fadeInUp 0.6s ease;
}

/* Staggered animations */
.animate-delay-1 { animation-delay: 0.1s; animation-fill-mode: both; }
.animate-delay-2 { animation-delay: 0.2s; animation-fill-mode: both; }
.animate-delay-3 { animation-delay: 0.3s; animation-fill-mode: both; }
.animate-delay-4 { animation-delay: 0.4s; animation-fill-mode: both; }

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  :root {
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
  }

  .hero {
    padding-top: 120px;
    min-height: auto;
  }

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

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

  .nav {
    padding: var(--space-sm) var(--space-md);
  }
}

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
  background: var(--bg-tertiary);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* ===== SELECTION ===== */
::selection {
  background: rgba(16, 185, 129, 0.3);
  color: white;
}

/* ===== LEGAL PAGES ===== */
.legal-content {
  max-width: 800px;
  margin: 0 auto;
  padding: var(--space-2xl) var(--space-md);
}

.legal-content h1 {
  font-size: 2rem;
  margin-bottom: var(--space-lg);
  text-align: center;
}

.legal-content h2 {
  font-size: 1.25rem;
  color: var(--text-primary);
  margin-top: var(--space-xl);
  margin-bottom: var(--space-sm);
}

.legal-content p {
  margin-bottom: var(--space-md);
}

.legal-content ul {
  margin-left: var(--space-lg);
  margin-bottom: var(--space-md);
  color: var(--text-secondary);
}

.legal-content li {
  margin-bottom: var(--space-xs);
}

/* ===== WARN BOX ===== */
.warn-box {
  background: rgba(245, 158, 11, 0.1);
  border: 1px solid rgba(245, 158, 11, 0.3);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.6;
}

.warn-box strong {
  color: #f59e0b;
}

/* ===== INFO CARD ===== */
.info-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  max-width: 800px;
  margin: 0 auto;
}

.info-card h2 {
  color: var(--text-primary);
  font-size: 1.25rem;
  margin-top: var(--space-lg);
  margin-bottom: var(--space-sm);
}

.info-card h2:first-child {
  margin-top: 0;
}

.info-card p {
  margin-bottom: var(--space-sm);
}

.info-card ul {
  margin-left: var(--space-lg);
  margin-bottom: var(--space-md);
  color: var(--text-secondary);
}

.info-card li {
  margin-bottom: var(--space-xs);
}

/* ===== SUCCESS PAGE ===== */
.success-icon {
  width: 80px;
  height: 80px;
  background: linear-gradient(135deg, #10b981 0%, #059669 100%);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-lg);
  font-size: 2.5rem;
}

/* ===== STYLE CARDS ===== */
.style-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-md);
  margin: var(--space-lg) 0;
}

.style-card {
  background: var(--bg-card);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  cursor: pointer;
  transition: var(--transition-normal);
}

.style-card:hover {
  border-color: var(--border-color-hover);
  background: var(--bg-card-hover);
}

.style-card.selected {
  border-color: var(--accent-start);
  background: rgba(16, 185, 129, 0.1);
}

.style-card input[type="radio"] {
  display: none;
}

.style-card h3 {
  font-size: 1.1rem;
  margin-bottom: var(--space-sm);
}

.style-card p {
  font-size: 0.9rem;
  color: var(--text-muted);
}