/**
 * LYVRE V3 - Layout Principal (Site Public)
 * 
 * Structure :
 * - Header avec navigation
 * - Main content
 * - Footer
 */

/* ==========================================================================
   LAYOUT STRUCTURE
   ========================================================================== */

.site-layout {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.site-main {
  flex: 1;
}

/* ==========================================================================
   HEADER & NAVIGATION
   ========================================================================== */

.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  background: hsla(220, 45%, 8%, 0.7);
  backdrop-filter: blur(15px) saturate(180%);
  -webkit-backdrop-filter: blur(15px) saturate(180%);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  transition: all 0.3s ease;
}

.site-header.scrolled {
  background: hsla(220, 45%, 5%, 0.9);
  padding: var(--space-1) 0;
  box-shadow: 0 10px 30px rgba(0,0,0,0.5);
}

.site-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  padding: 0 var(--space-4);
  max-width: 1400px;
  margin: 0 auto;
}

/* -- Logo -- */
.site-logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xl);
  font-weight: var(--font-bold);
  color: var(--foreground);
  text-decoration: none;
}

.site-logo:hover {
  color: var(--accent);
}

.site-logo img {
  height: 40px;
  width: auto;
  max-height: 40px;
  object-fit: contain;
}

.site-logo-icon {
  font-size: 1.5em;
}

/* -- Navigation links -- */
.site-nav-links {
  display: none;
  align-items: center;
  gap: var(--space-6);
}

@media (min-width: 768px) {
  .site-nav-links {
    display: flex;
  }
}

.site-nav-link {
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--muted-foreground);
  transition: color var(--transition-fast);
}

.site-nav-link:hover {
  color: var(--accent);
}

.site-nav-link-active {
  color: var(--accent);
}

/* -- Navigation actions -- */
.site-nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

/* -- Mobile menu button -- */
.site-nav-mobile-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  color: var(--foreground);
  border-radius: var(--radius);
  transition: background-color var(--transition-fast);
}

.site-nav-mobile-btn:hover {
  background: var(--card);
}

@media (min-width: 768px) {
  .site-nav-mobile-btn {
    display: none;
  }
}

/* -- Mobile menu -- */
.site-nav-mobile {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: var(--background);
  border-bottom: 1px solid var(--border);
  padding: var(--space-4);
}

.site-nav-mobile.open {
  display: block;
}

.site-nav-mobile-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.site-nav-mobile-link {
  display: block;
  padding: var(--space-3) var(--space-4);
  color: var(--foreground);
  border-radius: var(--radius);
  transition: background-color var(--transition-fast);
}

.site-nav-mobile-link:hover {
  background: var(--card);
}

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

.site-footer {
  background: var(--background-alt);
  border-top: 1px solid var(--border);
  padding: var(--space-12) 0 var(--space-6);
}

.site-footer-content {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-4);
}

@media (min-width: 768px) {
  .site-footer-content {
    grid-template-columns: 2fr 1fr 1fr 1fr;
  }
}

.site-footer-brand {
  max-width: 300px;
}

.site-footer-logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xl);
  font-weight: var(--font-bold);
  margin-bottom: var(--space-4);
}

.site-footer-logo img {
  height: 32px;
  width: auto;
  max-height: 32px;
  object-fit: contain;
}

.site-footer-desc {
  color: var(--muted-foreground);
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
}

.site-footer-section h4 {
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--foreground);
  margin-bottom: var(--space-4);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.site-footer-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.site-footer-link {
  font-size: var(--text-sm);
  color: var(--muted-foreground);
  transition: color var(--transition-fast);
}

.site-footer-link:hover {
  color: var(--accent);
}

.site-footer-bottom {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
  padding-top: var(--space-8);
  margin-top: var(--space-8);
  border-top: 1px solid var(--border);
  text-align: center;
}

@media (min-width: 768px) {
  .site-footer-bottom {
    flex-direction: row;
    justify-content: space-between;
  }
}

.site-footer-copyright {
  font-size: var(--text-sm);
  color: var(--muted-foreground);
}

.site-footer-socials {
  display: flex;
  gap: var(--space-4);
}

.site-footer-social {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  color: var(--muted-foreground);
  background: var(--card);
  border-radius: var(--radius);
  transition: 
    color var(--transition-fast),
    background-color var(--transition-fast);
}

.site-footer-social:hover {
  color: var(--accent);
  background: var(--card-hover);
}

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

.site-hero {
  position: relative;
  padding: var(--space-20) 0;
  text-align: center;
  overflow: hidden;
}

.site-hero-bg {
  position: absolute;
  inset: 0;
  background: 
    radial-gradient(ellipse at 30% 20%, hsla(48, 100%, 50%, 0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 70% 80%, hsla(25, 100%, 45%, 0.06) 0%, transparent 50%);
  pointer-events: none;
}

.site-hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
  margin: 0 auto;
  padding: 0 var(--space-4);
}

.site-hero-title {
  font-size: clamp(var(--text-3xl), 5vw, var(--text-4xl));
  font-weight: var(--font-bold);
  margin-bottom: var(--space-4);
  line-height: 1.2;
}

.site-hero-title-highlight {
  background: linear-gradient(135deg, var(--accent) 0%, var(--secondary) 100%);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.site-hero-subtitle {
  font-size: var(--text-lg);
  color: var(--muted-foreground);
  margin-bottom: var(--space-8);
  line-height: var(--leading-relaxed);
}

.site-hero-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-4);
}

/* ==========================================================================
   SECTIONS
   ========================================================================== */

.site-section {
  padding: var(--space-16) 0;
}

.site-section-header {
  text-align: center;
  max-width: 600px;
  margin: 0 auto var(--space-12);
}

.site-section-title {
  font-size: var(--text-3xl);
  margin-bottom: var(--space-4);
}

.site-section-subtitle {
  font-size: var(--text-lg);
  color: var(--muted-foreground);
}

/* -- Section variants -- */
.site-section--alt {
  background: var(--background-alt);
}

.site-section--dark {
  background: var(--muted);
}

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

.nav-separator {
  border: none;
  border-top: 1px solid var(--border);
  margin: var(--space-2) 0;
}

/* ==========================================================================
   PLACEHOLDER PAGE
   ========================================================================== */

.site-placeholder {
  min-height: 60vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-8);
}

.site-placeholder-icon {
  font-size: 4rem;
  margin-bottom: var(--space-4);
  line-height: 1;
}

.site-placeholder-title {
  font-size: var(--text-2xl);
  color: var(--accent);
  margin-bottom: var(--space-4);
}

.site-placeholder-text {
  color: var(--muted-foreground);
  max-width: 500px;
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-8);
}