/* ========================================
   SOPRINTY - MODERN DESIGN SYSTEM
   ======================================== */

/* ========== CSS Variables ========== */
:root {
  /* Primary Colors - Teal du logo */
  --primary: #48c9b0;
  --primary-light: #6dd5c3;
  --primary-dark: #3aaa98;
  --primary-gradient: #48c9b0;

  /* Accent Colors - Coral du logo */
  --accent: #ec7063;
  --accent-light: #f0897e;
  --accent-dark: #d45a4e;

  /* Brand Colors (alias pour cohérence) */
  --brand-black: #48c9b0;
  --brand-dark: #3aaa98;
  --brand-accent: #ec7063;
  --brand-accent-dark: #d45a4e;
  --brand-accent-light: #f0897e;

  /* Success & Status */
  --success: #10b981;
  --warning: #f59e0b;
  --error: #ef4444;
  --info: #3b82f6;

  /* Backgrounds */
  --bg-primary: #ffffff;
  --bg-secondary: #f8fafc;
  --bg-tertiary: #f1f5f9;
  --bg-card: #ffffff;
  --bg-light: #f8fafa;

  /* Text Colors */
  --text-primary: #1e293b;
  --text-secondary: #64748b;
  --text-tertiary: #94a3b8;
  --text-white: #ffffff;
  --text-dark: #1e293b;
  --text-medium: #64748b;

  /* Borders */
  --border-color: #e2e8f0;
  --border-radius: 12px;
  --border-radius-large: 20px;
  --border-radius-small: 8px;

  /* Shadows */
  --shadow-small: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-medium: 0 4px 12px rgba(0, 0, 0, 0.1);
  --shadow-large: 0 8px 24px rgba(0, 0, 0, 0.12);
  --shadow-hover: 0 12px 32px rgba(72, 201, 176, 0.25);

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

  /* Typography */
  --font-family: "Poppins", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-size-base: 16px;
  --font-weight-normal: 400;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --font-weight-extrabold: 800;

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
}

/* ========== Reset & Base Styles ========== */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  font-size: var(--font-size-base);
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  color: var(--text-primary);
  background-color: var(--bg-secondary);
  line-height: 1.6;
  -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-normal);
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
  transition: var(--transition-normal);
}

input,
textarea,
select {
  font-family: inherit;
  font-size: inherit;
}

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

/* ========== Navigation Header ========== */
.header {
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-small);
}

.navbar {
  padding: var(--spacing-sm) 0;
}

.nav-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-xl);
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: var(--font-weight-bold);
  font-size: 1.5rem;
  flex-shrink: 0;
}

.logo-image {
  height: 45px;
  width: auto;
  display: block;
}

.nav-links {
  display: flex;
  gap: var(--spacing-md);
  margin-left: auto;
  margin-right: var(--spacing-lg);
}

.nav-link {
  padding: 0.5rem 1rem;
  border-radius: var(--border-radius-small);
  color: var(--text-secondary);
  font-weight: var(--font-weight-semibold);
}

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

.nav-link.active {
  color: var(--brand-accent);
  background: var(--bg-secondary);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  flex-shrink: 0;
}

/* Language Selector */
.language-selector {
  position: relative;
}

.lang-dropdown-btn {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  border-radius: var(--border-radius-small);
  border: 1px solid var(--border-color);
  background: var(--bg-primary);
  font-weight: var(--font-weight-semibold);
}

.lang-dropdown-btn:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-small);
}

.dropdown-arrow {
  font-size: 0.75rem;
  transition: var(--transition-fast);
}

.lang-dropdown {
  position: absolute;
  top: calc(100% + 0.5rem);
  right: 0;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-medium);
  min-width: 180px;
  display: none;
  overflow: hidden;
  z-index: 200;
}

.lang-dropdown.active {
  display: block;
}

.lang-option {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  width: 100%;
  padding: 0.75rem 1rem;
  text-align: left;
  color: var(--text-primary);
  font-weight: var(--font-weight-normal);
}

.lang-option:hover {
  background: var(--bg-secondary);
  color: var(--primary);
}

/* Mobile Menu Button */
.mobile-menu-btn {
  display: none;
  flex-direction: column;
  gap: 4px;
  padding: 0.5rem;
}

.mobile-menu-btn span {
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: var(--transition-fast);
}

/* ========== Buttons ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: var(--border-radius);
  font-weight: var(--font-weight-semibold);
  transition: all var(--transition-normal);
  cursor: pointer;
}

.btn-primary {
  background: var(--primary);
  color: var(--text-white);
  box-shadow: var(--shadow-small);
}

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}

.btn-secondary {
  background: var(--bg-primary);
  color: var(--primary);
  border: 2px solid var(--primary);
}

.btn-secondary:hover {
  background: var(--primary);
  color: var(--text-white);
  transform: translateY(-2px);
}

.btn-white {
  background: var(--bg-primary);
  color: var(--primary);
}

.btn-white:hover {
  transform: scale(1.05);
  box-shadow: var(--shadow-medium);
}

.btn-large {
  padding: 1rem 2rem;
  font-size: 1.125rem;
}

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

.btn-icon {
  font-size: 1.25rem;
}

/* ========== Sections ========== */
.features,
.how-it-works,
.gallery-preview {
  padding: var(--spacing-xl) 0;
}

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

.section-title {
  font-size: 2.5rem;
  font-weight: var(--font-weight-bold);
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
}

.section-subtitle {
  font-size: 1.125rem;
  color: var(--text-secondary);
}

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

.feature-card {
  background: var(--bg-card);
  padding: var(--spacing-lg);
  border-radius: var(--border-radius-large);
  box-shadow: var(--shadow-small);
  text-align: center;
  transition: var(--transition-normal);
}

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

.feature-icon {
  font-size: 3rem;
  margin-bottom: var(--spacing-sm);
}

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

.feature-text {
  color: var(--text-secondary);
}

/* Steps Grid */
.steps-grid {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr;
  gap: var(--spacing-md);
  align-items: stretch;
  max-width: 900px;
  margin: 0 auto var(--spacing-xl);
}

.step-card {
  background: var(--bg-card);
  padding: var(--spacing-lg);
  border-radius: var(--border-radius-large);
  text-align: center;
  box-shadow: var(--shadow-small);
  position: relative;
  display: flex;
  flex-direction: column;
}

.step-number {
  position: absolute;
  top: -15px;
  left: 50%;
  transform: translateX(-50%);
  width: 40px;
  height: 40px;
  background: var(--primary-gradient);
  color: var(--text-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: var(--font-weight-bold);
  font-size: 1.25rem;
}

.step-icon {
  font-size: 3rem;
  margin: var(--spacing-md) 0;
}

.step-title {
  font-size: 1.25rem;
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--spacing-sm);
}

.step-text {
  color: var(--text-secondary);
  flex-grow: 1;
}

.step-arrow {
  font-size: 2rem;
  color: var(--primary);
  align-self: center;
}

.cta-center {
  text-align: center;
  margin-top: var(--spacing-xl);
}

/* Gallery Preview (Home page) */
.preview-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.preview-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ========== Footer ========== */
.footer {
  background: var(--text-primary);
  color: var(--text-white);
  padding: var(--spacing-xl) 0 var(--spacing-md);
}

.footer-content {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}

.footer-brand .logo {
  color: var(--text-white);
  margin-bottom: var(--spacing-sm);
}

.footer-description {
  color: var(--text-tertiary);
  line-height: 1.8;
}

.footer-title {
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--spacing-sm);
}

.footer-column {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.footer-link {
  color: var(--text-tertiary);
  transition: var(--transition-fast);
}

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

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

/* ========== Responsive Design ========== */
@media (max-width: 1024px) {
  .steps-grid {
    grid-template-columns: 1fr;
  }

  .step-arrow {
    display: none;
  }

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

@media (max-width: 768px) {
  .header .container {
    max-width: 100%;
    width: 100%;
    padding: 0 var(--spacing-sm);
  }

  .header .nav-content {
    width: 100%;
  }

  .nav-links {
    display: none;
  }

  .header .nav-actions {
    margin-left: auto;
  }

  .mobile-menu-btn {
    display: flex;
  }

  .nav-links.active {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: white;
    padding: 1rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  }

  .mobile-menu-btn.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }

  .mobile-menu-btn.active span:nth-child(2) {
    opacity: 0;
  }

  .mobile-menu-btn.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
  }

  .section-title {
    font-size: 2rem;
  }

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

  .preview-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

@media (max-width: 480px) {
  .preview-grid {
    grid-template-columns: 1fr;
  }
}