/* ============================================
   LAYOUT — Navbar, Footer, Page Structure
   ============================================ */

/* --- App Container --- */
#app {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.page-content {
  flex: 1;
  padding-top: var(--navbar-height);
}

/* ============================================
   NAVBAR
   ============================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--navbar-height);
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--glass-border);
  z-index: var(--z-sticky);
  transition: all var(--transition-base);
}

.navbar.scrolled {
  box-shadow: var(--shadow-md);
}

.navbar-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-6);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  flex-shrink: 0;
}

.navbar-logo {
  height: 38px;
  width: auto;
}

.navbar-title {
  font-size: var(--fs-md);
  font-weight: var(--fw-bold);
  color: var(--text-primary);
  line-height: var(--lh-tight);
}

.navbar-subtitle {
  font-size: var(--fs-xs);
  color: var(--text-tertiary);
  font-weight: var(--fw-regular);
  display: block;
}

.navbar-nav {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.nav-link {
  padding: var(--space-2) var(--space-4);
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  color: var(--text-secondary);
  border-radius: var(--radius-pill);
  transition: all var(--transition-fast);
  text-decoration: none;
  position: relative;
}

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

.nav-link.active {
  color: var(--g-blue);
  background: var(--status-info-bg);
  font-weight: var(--fw-semibold);
}

.navbar-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

/* Theme toggle */
.theme-toggle {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-circle);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
  background: none;
  border: none;
  font-size: 20px;
}

.theme-toggle:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

/* Mobile hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: var(--space-2);
  background: none;
  border: none;
  z-index: calc(var(--z-sticky) + 2);
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: var(--radius-pill);
  transition: all var(--transition-base);
}

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

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile menu */
.mobile-menu {
  display: none;
  position: fixed;
  top: 0;
  right: -100%;
  width: 300px;
  height: 100vh;
  background: var(--bg-primary);
  box-shadow: var(--shadow-xl);
  z-index: calc(var(--z-sticky) + 1);
  padding: calc(var(--navbar-height) + var(--space-6)) var(--space-6) var(--space-6);
  transition: right var(--transition-slow);
  overflow-y: auto;
}

.mobile-menu.active {
  right: 0;
}

.mobile-menu-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: var(--z-sticky);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.mobile-menu-overlay.active {
  opacity: 1;
}

.mobile-nav-link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-4);
  font-size: var(--fs-md);
  font-weight: var(--fw-medium);
  color: var(--text-secondary);
  border-radius: var(--radius-lg);
  text-decoration: none;
  transition: all var(--transition-fast);
}

.mobile-nav-link:hover,
.mobile-nav-link.active {
  background: var(--status-info-bg);
  color: var(--g-blue);
}

.mobile-nav-link .material-icons-round {
  font-size: 22px;
}

@media (max-width: 768px) {
  .navbar-nav,
  .navbar-actions .btn {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  .mobile-menu,
  .mobile-menu-overlay {
    display: block;
  }

  .navbar-title {
    font-size: var(--fs-sm);
  }

  .navbar-subtitle {
    display: none;
  }
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
  background: var(--bg-primary);
  border-top: 1px solid var(--border-light);
  padding: var(--space-12) 0 var(--space-6);
  margin-top: auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-8);
  margin-bottom: var(--space-8);
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.footer-brand-logo {
  height: 36px;
  width: auto;
}

.footer-brand p {
  font-size: var(--fs-sm);
  color: var(--text-tertiary);
  max-width: 300px;
}

.footer-section h5 {
  color: var(--text-primary);
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: var(--space-4);
}

.footer-link {
  display: block;
  font-size: var(--fs-sm);
  color: var(--text-secondary);
  padding: var(--space-1) 0;
  transition: color var(--transition-fast);
}

.footer-link:hover {
  color: var(--g-blue);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-6);
  border-top: 1px solid var(--border-light);
}

.footer-bottom p {
  font-size: var(--fs-xs);
  color: var(--text-tertiary);
}

.footer-google-logo {
  height: 20px;
  opacity: 0.5;
  transition: opacity var(--transition-fast);
}

.footer-google-logo:hover {
  opacity: 0.8;
}

@media (max-width: 768px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }

  .footer-bottom {
    flex-direction: column;
    gap: var(--space-3);
    text-align: center;
  }
}

/* ============================================
   ADMIN LAYOUT
   ============================================ */
.admin-layout {
  display: flex;
  min-height: calc(100vh - var(--navbar-height));
}

.admin-sidebar {
  width: var(--sidebar-width);
  background: var(--bg-primary);
  border-right: 1px solid var(--border-light);
  padding: var(--space-6) var(--space-4);
  position: sticky;
  top: var(--navbar-height);
  height: calc(100vh - var(--navbar-height));
  overflow-y: auto;
  flex-shrink: 0;
}

.admin-sidebar-header {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4);
  margin-bottom: var(--space-4);
  background: var(--gemini-gradient);
  border-radius: var(--radius-lg);
  color: white;
}

.admin-sidebar-header .material-icons-round {
  font-size: 28px;
}

.admin-sidebar-header h4 {
  color: white;
  font-size: var(--fs-base);
}

.admin-sidebar-header p {
  color: rgba(255,255,255,0.8);
  font-size: var(--fs-xs);
}

.sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.sidebar-link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  color: var(--text-secondary);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  cursor: pointer;
  text-decoration: none;
  border: none;
  background: none;
  width: 100%;
  text-align: left;
}

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

.sidebar-link.active {
  background: var(--status-info-bg);
  color: var(--g-blue);
  font-weight: var(--fw-semibold);
}

.sidebar-link .material-icons-round {
  font-size: 20px;
}

.admin-main {
  flex: 1;
  padding: var(--space-8);
  background: var(--bg-secondary);
  min-width: 0;
}

.admin-page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-8);
  flex-wrap: wrap;
  gap: var(--space-4);
}

.admin-page-header h2 {
  font-size: var(--fs-2xl);
}

.admin-page-header p {
  font-size: var(--fs-sm);
  margin-top: var(--space-1);
}

@media (max-width: 1024px) {
  .admin-sidebar {
    display: none;
  }

  .admin-main {
    padding: var(--space-6) var(--space-4);
  }
}

/* --- Section Spacing --- */
.section {
  padding: var(--space-16) 0;
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-12);
}

.section-header h2 {
  margin-bottom: var(--space-3);
}

.section-header p {
  max-width: 600px;
  margin: 0 auto;
  font-size: var(--fs-lg);
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--g-blue);
  margin-bottom: var(--space-4);
}