/* =====================================================
   RYSE - Coach Nutrition & Fitness
   Design System based on Flutter app
   ===================================================== */

:root {
  /* Colors from app */
  --primary-dark: #0B132B;
  --primary-medium: #1C2951;
  --primary-light: #2A3F6F;
  --accent-blue: #3B82F6;
  --accent-green: #10B981;
  --accent-orange: #F59E0B;

  /* Neutrals */
  --white: #FFFFFF;
  --gray-100: #F3F4F6;
  --gray-200: #E5E7EB;
  --gray-300: #D1D5DB;
  --gray-600: #4B5563;
  --gray-800: #1F2937;

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

  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-normal: 300ms ease-in-out;
  --transition-slow: 500ms ease-in-out;

  /* Border radius */
  --radius-sm: 0.5rem;
  --radius-md: 1rem;
  --radius-lg: 1.5rem;
  --radius-xl: 2rem;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

/* =====================================================
   RESET & BASE
   ===================================================== */

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: var(--font-family);
  line-height: 1.6;
  color: var(--gray-800);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

/* =====================================================
   TYPOGRAPHY
   ===================================================== */

h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  color: var(--primary-dark);
  margin-bottom: var(--spacing-md);
}

h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 900;
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.01em;
}

h3 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
}

h4 {
  font-size: clamp(1.25rem, 2.5vw, 1.5rem);
  font-weight: 600;
}

p {
  margin-bottom: var(--spacing-sm);
  color: var(--gray-600);
  font-size: 1.125rem;
  line-height: 1.7;
}

.text-gradient {
  background: linear-gradient(135deg, var(--primary-dark), var(--accent-blue));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* =====================================================
   CONTAINER & LAYOUT
   ===================================================== */

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.container-wide {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.section {
  padding: var(--spacing-2xl) 0;
}

.section-hero {
  padding: 5rem 0 3rem 0;
}

/* =====================================================
   NAVIGATION
   ===================================================== */

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(11, 19, 43, 0.95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  z-index: 1000;
  padding: var(--spacing-sm) 0;
  box-shadow: var(--shadow-md);
}

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

.navbar-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  color: var(--white);
  font-size: 1.5rem;
  font-weight: 900;
  letter-spacing: -0.02em;
}

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

.navbar-nav {
  display: flex;
  gap: var(--spacing-lg);
  list-style: none;
}

.navbar-nav a {
  color: var(--white);
  font-weight: 500;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  transition: var(--transition-fast);
}

.navbar-nav a:hover {
  background: rgba(255, 255, 255, 0.1);
}

.navbar-cta {
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-green));
  color: var(--white);
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--radius-md);
  font-weight: 600;
  box-shadow: var(--shadow-lg);
  transition: var(--transition-normal);
}

.navbar-cta:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl);
}

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

@media (max-width: 768px) {
  .navbar-toggle {
    display: block;
  }

  .navbar-nav {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: var(--primary-dark);
    flex-direction: column;
    padding: var(--spacing-lg);
    gap: var(--spacing-md);
    transform: translateX(-100%);
    transition: var(--transition-normal);
  }

  .navbar-nav.active {
    transform: translateX(0);
  }
}

/* =====================================================
   HERO SECTION
   ===================================================== */

.hero {
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-medium) 100%);
  color: var(--white);
  padding-top: 100px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  opacity: 0.1;
}

.hero-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-2xl);
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-text h1 {
  color: var(--white);
  margin-bottom: var(--spacing-md);
}

.hero-text .tagline {
  font-size: 1.25rem;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: var(--spacing-lg);
  font-weight: 400;
}

.hero-features {
  list-style: none;
  margin-bottom: var(--spacing-xl);
}

.hero-features li {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-sm);
  font-size: 1.125rem;
  color: rgba(255, 255, 255, 0.95);
}

.hero-features li::before {
  content: '✓';
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  background: var(--accent-green);
  border-radius: 50%;
  font-weight: 700;
  flex-shrink: 0;
}

.hero-cta {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: 1rem 2rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 1.125rem;
  border: none;
  cursor: pointer;
  transition: var(--transition-normal);
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-green));
  color: var(--white);
  box-shadow: var(--shadow-lg);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-xl);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.1);
  color: var(--white);
  border: 2px solid rgba(255, 255, 255, 0.3);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.2);
  border-color: rgba(255, 255, 255, 0.5);
}

.hero-mockup {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-mockup img {
  max-width: 400px;
  filter: drop-shadow(0 20px 40px rgba(0, 0, 0, 0.3));
  animation: float 3s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-20px); }
}

@media (max-width: 968px) {
  .hero-content {
    grid-template-columns: 1fr;
    text-align: center;
  }

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

  .hero-features li {
    justify-content: center;
  }
}

/* =====================================================
   FEATURES SECTION
   ===================================================== */

.features {
  background: var(--gray-100);
}

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

.feature-card {
  background: var(--white);
  padding: var(--spacing-xl);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  transition: var(--transition-normal);
}

.feature-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-xl);
}

.feature-icon {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-green));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  margin-bottom: var(--spacing-md);
}

.feature-card h3 {
  color: var(--primary-dark);
  margin-bottom: var(--spacing-sm);
}

.feature-card p {
  color: var(--gray-600);
  font-size: 1rem;
}

/* =====================================================
   SCREENSHOTS SECTION
   ===================================================== */

.screenshots {
  background: var(--white);
}

.screenshots-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-xl);
}

.screenshot-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  transition: var(--transition-normal);
}

.screenshot-card:hover {
  transform: scale(1.05);
  box-shadow: var(--shadow-xl);
}

.screenshot-card img {
  width: 100%;
  height: auto;
  display: block;
}

.screenshot-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(to top, rgba(11, 19, 43, 0.9), transparent);
  padding: var(--spacing-md);
  color: var(--white);
  transform: translateY(100%);
  transition: var(--transition-normal);
}

.screenshot-card:hover .screenshot-overlay {
  transform: translateY(0);
}

/* =====================================================
   CTA SECTION
   ===================================================== */

.cta-section {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary-medium));
  color: var(--white);
  text-align: center;
  padding: var(--spacing-2xl) 0;
}

.cta-section h2 {
  color: var(--white);
  margin-bottom: var(--spacing-md);
}

.cta-section p {
  color: rgba(255, 255, 255, 0.9);
  font-size: 1.25rem;
  margin-bottom: var(--spacing-xl);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.app-badges {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  flex-wrap: wrap;
}

.app-badge {
  height: 60px;
  transition: var(--transition-normal);
}

.app-badge:hover {
  transform: scale(1.05);
}

/* =====================================================
   FOOTER
   ===================================================== */

.footer {
  background: var(--primary-dark);
  color: var(--white);
  padding: var(--spacing-2xl) 0 var(--spacing-md) 0;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

.footer-section h4 {
  color: var(--white);
  margin-bottom: var(--spacing-md);
}

.footer-section ul {
  list-style: none;
}

.footer-section ul li {
  margin-bottom: var(--spacing-xs);
}

.footer-section a {
  color: rgba(255, 255, 255, 0.8);
  transition: var(--transition-fast);
}

.footer-section a:hover {
  color: var(--white);
}

.footer-social {
  display: flex;
  gap: var(--spacing-sm);
}

.social-icon {
  width: 40px;
  height: 40px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  transition: var(--transition-fast);
}

.social-icon:hover {
  background: var(--accent-blue);
  transform: translateY(-3px);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--spacing-md);
  text-align: center;
  color: rgba(255, 255, 255, 0.7);
}

/* =====================================================
   LEGAL PAGES
   ===================================================== */

.legal-page {
  padding-top: 100px;
  min-height: 100vh;
}

.legal-content {
  max-width: 800px;
  margin: 0 auto;
  padding: var(--spacing-2xl) var(--spacing-md);
}

.legal-content h1 {
  margin-bottom: var(--spacing-sm);
}

.legal-content .last-updated {
  color: var(--gray-600);
  font-style: italic;
  margin-bottom: var(--spacing-xl);
}

.legal-content h2 {
  margin-top: var(--spacing-xl);
  margin-bottom: var(--spacing-md);
}

.legal-content h3 {
  margin-top: var(--spacing-lg);
  margin-bottom: var(--spacing-sm);
}

.legal-content ul, .legal-content ol {
  margin-left: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
}

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

/* =====================================================
   UTILITIES
   ===================================================== */

.text-center {
  text-align: center;
}

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

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

/* =====================================================
   ANIMATIONS
   ===================================================== */

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

.fade-in-up {
  animation: fadeInUp 0.6s ease-out;
}

/* =====================================================
   RESPONSIVE
   ===================================================== */

@media (max-width: 768px) {
  .hero-content {
    grid-template-columns: 1fr;
  }

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

  .screenshots-container {
    grid-template-columns: 1fr;
  }

  .footer-content {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .footer-social {
    justify-content: center;
  }
}

/* =====================================================
   LOGO STYLES (comme dans l'app Flutter)
   ===================================================== */

/* Container du logo avec gradient bleu */
.logo-container {
  width: 50px;
  height: 50px;
  background: linear-gradient(135deg, var(--primary-dark), var(--primary-medium));
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.logo-container img {
  width: 28px;
  height: 28px;
  filter: invert(1) brightness(2); /* Panda blanc */
}

/* Version small pour footer */
.logo-container-small {
  width: 32px;
  height: 32px;
  background: linear-gradient(135deg, var(--primary-dark), var(--primary-medium));
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.logo-container-small img {
  width: 18px;
  height: 18px;
  filter: invert(1) brightness(2);
}

/* Texte "Ryze" comme dans l'app */
.logo-text {
  font-size: 32px;
  font-weight: 700; /* Bold - moins gras que 900 */
  color: var(--white);
  letter-spacing: -1px; /* Serré comme dans l'app */
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.navbar-logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* Coach Ryze hero image */
.coach-ryze-hero {
  max-width: 400px;
  filter: drop-shadow(0 20px 40px rgba(0, 0, 0, 0.3));
  animation: float 3s ease-in-out infinite;
}

/* Feature images (Coach Ryze avatars) */
.feature-image {
  width: 100%;
  max-width: 80px;
  height: auto;
  filter: drop-shadow(0 4px 12px rgba(0, 0, 0, 0.15));
}

.feature-icon {
  width: 80px;
  height: 80px;
  background: transparent;
  border-radius: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  margin-bottom: var(--spacing-md);
}

/* Suppression de tous les gradients verts - Remplacés par bleu uniquement */
.btn-primary {
  background: linear-gradient(135deg, var(--primary-dark), var(--accent-blue));
  color: var(--white);
  box-shadow: var(--shadow-lg);
}

.navbar-cta {
  background: linear-gradient(135deg, var(--primary-dark), var(--accent-blue));
  color: var(--white);
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--radius-md);
  font-weight: 600;
  box-shadow: var(--shadow-lg);
  transition: var(--transition-normal);
}

/* Suppression de la pastille verte pour les checkmarks - Remplacé par bleu */
.hero-features li::before {
  content: '';
  display: none;
}

.hero-features li {
  padding-left: 0;
}


/* =====================================================
   LANGUAGE SWITCHER
   ===================================================== */

.language-switcher {
  display: flex;
  gap: 4px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  padding: 4px;
  margin-left: auto;
  margin-right: var(--spacing-md);
}

.lang-btn {
  padding: 6px 12px;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.7);
  transition: var(--transition-fast);
  cursor: pointer;
}

.lang-btn:hover {
  color: var(--white);
  background: rgba(255, 255, 255, 0.1);
}

.lang-btn.active {
  background: var(--white);
  color: var(--primary-dark);
}

@media (max-width: 768px) {
  .language-switcher {
    position: absolute;
    right: 70px;
    top: 50%;
    transform: translateY(-50%);
    margin: 0;
  }
}


/* Version responsive pour mobile */
@media (max-width: 768px) {
  .logo-text {
    font-size: 24px;
  }
}