/* ===================================
   Cuivre.net - Main Stylesheet
   =================================== */

/* CSS Variables */
:root {
  --copper: #B87333;
  --copper-dark: #a6632b;
  --copper-light: #c98850;
  --offwhite: #F8F8F8;
  --charcoal: #333;
  --gray-light: #f1f1f1;
  --white: #fff;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.15);
  --transition: all 0.3s ease;
  --font: 'Lato', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --border-radius: 0.5rem;
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
}

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

html {
  scroll-behavior: smooth;
}

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

/* Skip to Content Link (Accessibility) */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--copper);
  color: white;
  padding: 0.5rem 1rem;
  text-decoration: none;
  z-index: 100;
  border-radius: 0 0 var(--border-radius) 0;
  font-weight: 600;
}

.skip-link:focus {
  top: 0;
}

/* Focus Styles for Accessibility */
a:focus,
button:focus,
input:focus,
select:focus,
textarea:focus {
  outline: 3px solid var(--copper);
  outline-offset: 2px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  line-height: 1.2;
  margin-bottom: var(--spacing-sm);
  font-weight: 700;
  color: var(--charcoal);
}

h1 {
  font-size: 2rem;
  margin-top: var(--spacing-md);
}

h2 {
  font-size: 1.75rem;
  margin-top: var(--spacing-lg);
  border-bottom: 3px solid var(--copper);
  padding-bottom: var(--spacing-xs);
  display: inline-block;
}

h3 {
  font-size: 1.5rem;
  margin-top: var(--spacing-md);
  color: var(--copper-dark);
}

p {
  margin-bottom: var(--spacing-sm);
}

ul, ol {
  margin-bottom: var(--spacing-sm);
  padding-left: var(--spacing-lg);
}

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

/* Images */
img {
  max-width: 100%;
  height: auto;
  display: block;
  border-radius: var(--border-radius);
}

/* Header & Navigation */
header {
  background: var(--offwhite);
  position: sticky;
  top: 0;
  z-index: 1000;
  border-bottom: 1px solid rgba(0, 0, 0, 0.1);
  box-shadow: var(--shadow-sm);
}

.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-sm);
  max-width: 1400px;
  margin: 0 auto;
}

.logo a {
  text-decoration: none;
  color: var(--copper);
  font-weight: 700;
  font-size: 1.5rem;
  transition: var(--transition);
}

.logo a:hover {
  color: var(--copper-dark);
}

.nav-links {
  list-style: none;
  display: flex;
  gap: var(--spacing-md);
  align-items: center;
}

.nav-links a {
  text-decoration: none;
  color: var(--charcoal);
  font-weight: 600;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--border-radius);
  transition: var(--transition);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--copper);
  transition: var(--transition);
  transform: translateX(-50%);
}

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

.nav-links a:hover::after {
  width: 80%;
}

.nav-links a.active {
  background: var(--copper);
  color: white;
}

/* Mobile Menu Toggle */
#nav-toggle {
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  display: none;
  color: var(--charcoal);
  padding: var(--spacing-xs);
  transition: var(--transition);
}

#nav-toggle:hover {
  color: var(--copper);
  transform: scale(1.1);
}

#nav-toggle[aria-expanded="true"] {
  color: var(--copper);
}

/* Mobile Navigation Styles */
@media (max-width: 767px) {
  #nav-toggle {
    display: block;
  }

  .nav-links {
    display: none;
    flex-direction: column;
    width: 100%;
    gap: 0;
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--offwhite);
    box-shadow: var(--shadow-md);
    border-top: 1px solid rgba(0, 0, 0, 0.1);
  }

  .nav-links li {
    width: 100%;
  }

  .nav-links a {
    display: block;
    padding: var(--spacing-sm);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
  }

  .nav-links a::after {
    display: none;
  }

  .nav-links.open {
    display: flex;
  }

  .navbar {
    flex-wrap: wrap;
  }
}

/* Hero Section */
.hero {
  position: relative;
  text-align: center;
  color: var(--white);
  overflow: hidden;
}

.hero img {
  width: 100%;
  height: 60vh;
  object-fit: cover;
  display: block;
}

.hero h1 {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: clamp(1.5rem, 5vw, 4rem);
  background: rgba(0, 0, 0, 0.6);
  padding: var(--spacing-md);
  border-radius: var(--border-radius);
  backdrop-filter: blur(5px);
  max-width: 90%;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

/* Container & Layout */
.container {
  display: block;
  padding: var(--spacing-sm);
  max-width: 1400px;
  margin: 0 auto;
}

@media (min-width: 768px) {
  .container {
    display: flex;
    gap: var(--spacing-lg);
    padding: var(--spacing-lg);
  }
}

.content {
  flex: 3;
}

.sidebar {
  flex: 1;
  padding: var(--spacing-md);
  background: var(--gray-light);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-sm);
  height: fit-content;
  position: sticky;
  top: calc(var(--spacing-xl) + 60px);
}

.sidebar h2 {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-sm);
  border-bottom: 2px solid var(--copper);
}

.sidebar ul {
  list-style: none;
  padding-left: 0;
}

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

.sidebar ul a {
  color: var(--charcoal);
  text-decoration: none;
  transition: var(--transition);
  display: block;
  padding: var(--spacing-xs);
  border-radius: var(--border-radius);
}

.sidebar ul a:hover {
  background: var(--copper);
  color: white;
  padding-left: var(--spacing-sm);
}

/* Sections */
.section {
  margin: var(--spacing-lg) 0;
}

article {
  background: var(--white);
  padding: var(--spacing-lg);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-sm);
}

/* Featured Articles Grid */
.featured-articles {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-md);
}

.featured-articles article {
  background: var(--white);
  padding: var(--spacing-md);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  border: 2px solid transparent;
}

.featured-articles article:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
  border-color: var(--copper);
}

/* Product Cards */
.product-card {
  background: var(--white);
  padding: var(--spacing-md);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-sm);
  margin-bottom: var(--spacing-lg);
  transition: var(--transition);
}

.product-card:hover {
  box-shadow: var(--shadow-md);
}

.product-card img {
  margin-bottom: var(--spacing-sm);
}

/* Buttons */
.button {
  background: var(--copper);
  color: var(--white);
  padding: 0.75rem 1.5rem;
  border: none;
  border-radius: var(--border-radius);
  text-decoration: none;
  display: inline-block;
  transition: var(--transition);
  font-weight: 600;
  cursor: pointer;
  text-align: center;
  font-size: 1rem;
}

.button:hover {
  background: var(--copper-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.button:active {
  transform: translateY(0);
}

.button-secondary {
  background: var(--gray-light);
  color: var(--charcoal);
}

.button-secondary:hover {
  background: var(--charcoal);
  color: var(--white);
}

/* Back to Top Button */
#back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background: var(--copper);
  color: white;
  border: none;
  border-radius: 50%;
  width: 50px;
  height: 50px;
  font-size: 1.5rem;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  box-shadow: var(--shadow-md);
  z-index: 999;
  display: flex;
  align-items: center;
  justify-content: center;
}

#back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

#back-to-top:hover {
  background: var(--copper-dark);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

/* Cookie Consent Banner */
.cookie-consent {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: rgba(51, 51, 51, 0.98);
  color: white;
  padding: var(--spacing-md);
  z-index: 9999;
  display: none;
  box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.2);
}

.cookie-consent.show {
  display: block;
}

.cookie-consent-content {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  gap: var(--spacing-md);
  align-items: center;
  flex-wrap: wrap;
  justify-content: space-between;
}

.cookie-consent p {
  flex: 1;
  margin: 0;
  min-width: 250px;
}

.cookie-consent-buttons {
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

.cookie-consent .button {
  padding: 0.5rem 1rem;
  white-space: nowrap;
}

/* Ad Placeholder */
.adsense-placeholder {
  margin: var(--spacing-lg) 0;
  padding: var(--spacing-lg);
  background: var(--gray-light);
  border: 2px dashed #ddd;
  border-radius: var(--border-radius);
  text-align: center;
  color: #999;
  min-height: 250px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.adsense-placeholder::before {
  content: 'Espace publicitaire';
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* Footer */
footer {
  text-align: center;
  padding: var(--spacing-lg);
  background: #fafafa;
  border-top: 1px solid rgba(0, 0, 0, 0.1);
  margin-top: var(--spacing-xl);
}

footer p {
  margin: 0;
  color: #666;
}

footer a {
  color: var(--copper);
  text-decoration: none;
  margin: 0 var(--spacing-xs);
  transition: var(--transition);
}

footer a:hover {
  color: var(--copper-dark);
  text-decoration: underline;
}

/* 404 Page Styles */
.error-page {
  text-align: center;
  padding: var(--spacing-xl);
  min-height: 60vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.error-page h1 {
  font-size: 6rem;
  color: var(--copper);
  margin-bottom: var(--spacing-sm);
}

.error-page h2 {
  font-size: 2rem;
  margin-bottom: var(--spacing-md);
}

/* Utility Classes */
.text-center {
  text-align: center;
}

.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }

.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }

.p-1 { padding: var(--spacing-sm); }
.p-2 { padding: var(--spacing-md); }
.p-3 { padding: var(--spacing-lg); }

/* Print Styles */
@media print {
  header,
  footer,
  .sidebar,
  .cookie-consent,
  #back-to-top,
  .adsense-placeholder {
    display: none;
  }

  body {
    background: white;
  }

  article {
    box-shadow: none;
  }
}

/* Loading State */
.loading {
  opacity: 0.6;
  pointer-events: none;
  position: relative;
}

.loading::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 30px;
  height: 30px;
  border: 3px solid var(--gray-light);
  border-top-color: var(--copper);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  transform: translate(-50%, -50%);
}

@keyframes spin {
  to { transform: translate(-50%, -50%) rotate(360deg); }
}

/* Responsive Images */
@media (min-width: 768px) {
  .hero h1 {
    font-size: 4rem;
  }
}

/* Animation for Fade In */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

/* Responsive Tables */
table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--spacing-md) 0;
}

th, td {
  padding: var(--spacing-sm);
  text-align: left;
  border-bottom: 1px solid #ddd;
}

th {
  background: var(--copper);
  color: white;
  font-weight: 600;
}

@media (max-width: 767px) {
  table {
    font-size: 0.875rem;
  }

  th, td {
    padding: var(--spacing-xs);
  }
}