/* ==========================================================================
   FLAVOR GLASS — Layout System
   ========================================================================== */

/* --- Site wrapper --- */
.site-wrapper {
  display: flex;
  min-height: 100vh;
  position: relative;
}

/* --- Header / Navigation --- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--fg-header-height);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--fg-space-2xl);
  background: rgba(5, 8, 15, 0.6);
  -webkit-backdrop-filter: blur(var(--fg-blur-lg)) saturate(var(--fg-saturate));
  backdrop-filter: blur(var(--fg-blur-lg)) saturate(var(--fg-saturate));
  border-bottom: 1px solid var(--fg-glass-border);
  transition: all var(--fg-duration-base) var(--fg-ease-glass);
}

[data-theme="light"] .site-header {
  background: rgba(242, 244, 248, 0.7);
}

.site-header.scrolled {
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
}

/* Logo */
.site-logo {
  font-size: var(--fg-text-xl);
  font-weight: var(--fg-weight-bold);
  color: var(--fg-text-primary);
  text-decoration: none;
  letter-spacing: -0.03em;
}

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

/* Main nav */
.main-nav {
  display: flex;
  align-items: center;
  gap: var(--fg-space-xs);
}

.main-nav a {
  display: flex;
  align-items: center;
  gap: var(--fg-space-xs);
  padding: 0.5rem 1rem;
  font-size: var(--fg-text-sm);
  font-weight: var(--fg-weight-medium);
  color: var(--fg-text-secondary);
  text-decoration: none;
  border-radius: var(--fg-radius-pill);
  transition: all var(--fg-duration-base) var(--fg-ease-glass);
  position: relative;
}

.main-nav a:hover {
  color: var(--fg-text-primary);
  background: var(--fg-glass-bg);
}

.main-nav a.active {
  color: var(--fg-accent);
  background: var(--fg-accent-soft);
}

/* Pill indicator for active nav item */
.main-nav a.active::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 3px;
  background: var(--fg-accent);
  border-radius: 2px;
}

/* Header actions */
.header-actions {
  display: flex;
  align-items: center;
  gap: var(--fg-space-md);
}

/* Mobile menu toggle */
.mobile-menu-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: var(--fg-glass-bg);
  border: 1px solid var(--fg-glass-border);
  border-radius: var(--fg-radius-md);
  cursor: pointer;
  color: var(--fg-text-primary);
}

.hamburger {
  display: flex;
  flex-direction: column;
  gap: 4px;
  width: 18px;
}

.hamburger span {
  display: block;
  height: 2px;
  background: currentColor;
  border-radius: 1px;
  transition: all var(--fg-duration-base) var(--fg-ease-glass);
}

/* --- Main content area --- */
.site-main {
  display: flex;
  width: 100%;
  max-width: var(--fg-container-max);
  margin: var(--fg-header-height) auto 0;
  padding: 0 var(--fg-space-xl);
}

/* --- Sidebar (Profile Card) --- */
.site-sidebar {
  position: sticky;
  top: calc(var(--fg-header-height) + var(--fg-space-xl));
  width: var(--fg-sidebar-width);
  min-width: var(--fg-sidebar-width);
  height: fit-content;
  padding: var(--fg-space-xl) var(--fg-space-md) var(--fg-space-xl) 0;
  flex-shrink: 0;
}

/* --- Content area --- */
.site-content {
  flex: 1;
  min-width: 0;
  padding: var(--fg-space-xl) 0 var(--fg-space-4xl);
}

/* --- Sections --- */
.section {
  padding: var(--fg-space-4xl) 0;
}

.section + .section {
  border-top: 1px solid rgba(255, 255, 255, 0.04);
}

/* --- Grid system --- */
.grid {
  display: grid;
  gap: var(--fg-space-xl);
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

/* Auto-fit responsive grid */
.grid-auto {
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
}

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

/* --- Footer --- */
.site-footer {
  padding: var(--fg-space-2xl) var(--fg-space-2xl);
  text-align: center;
  border-top: 1px solid var(--fg-glass-border);
  background: rgba(5, 8, 15, 0.4);
  backdrop-filter: blur(var(--fg-blur-sm));
}

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

.footer-copyright {
  font-size: var(--fg-text-sm);
  color: var(--fg-text-tertiary);
}

.footer-email a {
  font-size: var(--fg-text-sm);
  color: var(--fg-text-secondary);
}

/* --- Hero section --- */
.hero {
  position: relative;
  min-height: calc(100vh - var(--fg-header-height));
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--fg-space-4xl) var(--fg-space-xl);
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: -1;
}

.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.3;
}

.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg,
    rgba(5, 8, 15, 0.3) 0%,
    rgba(5, 8, 15, 0.6) 60%,
    var(--fg-bg-primary) 100%
  );
}

.hero-content {
  max-width: 700px;
  position: relative;
  z-index: 1;
}

.hero-content h1 {
  font-size: var(--fg-text-6xl);
  font-weight: var(--fg-weight-bold);
  margin-bottom: var(--fg-space-lg);
  letter-spacing: -0.04em;
}

.hero-content p {
  font-size: var(--fg-text-xl);
  color: var(--fg-text-secondary);
  margin-bottom: var(--fg-space-2xl);
}

.hero-actions {
  display: flex;
  gap: var(--fg-space-md);
  justify-content: center;
}

.hero-scroll {
  position: absolute;
  bottom: var(--fg-space-2xl);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--fg-space-sm);
  color: var(--fg-text-tertiary);
  font-size: var(--fg-text-xs);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  animation: fg-bounce 2s ease-in-out infinite;
}

@keyframes fg-bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(8px); }
}

/* --- Full-width (no sidebar) layout --- */
.layout-full .site-main {
  flex-direction: column;
  max-width: 100%;
  padding: 0;
}

.layout-full .site-sidebar {
  display: none;
}

.layout-full .site-content {
  padding: 0;
}

/* --- Page header --- */
.page-header {
  padding: var(--fg-space-3xl) var(--fg-space-2xl) var(--fg-space-2xl);
  text-align: center;
}

.page-header h1 {
  font-size: var(--fg-text-5xl);
  margin-bottom: var(--fg-space-md);
}

.page-header p {
  font-size: var(--fg-text-lg);
  color: var(--fg-text-secondary);
}

/* --- Breadcrumbs --- */
.breadcrumbs {
  display: flex;
  align-items: center;
  gap: var(--fg-space-sm);
  font-size: var(--fg-text-sm);
  color: var(--fg-text-tertiary);
  margin-bottom: var(--fg-space-xl);
}

.breadcrumbs a {
  color: var(--fg-text-secondary);
}

.breadcrumbs .sep {
  color: var(--fg-text-tertiary);
}