/**
 * Layout - Grid, Sidebar, Topbar, Mobile
 *
 * @package Burot_Sigoignet
 */

.bs-app {
  display: flex;
  min-height: 100vh;
}

.bs-content {
  flex: 1;
  margin-left: 0;
  margin-top: var(--topbar-height);
  padding: var(--spacing-xl);
  padding-bottom: calc(var(--bottom-nav-height) + var(--spacing-xl));
  transition: margin-left var(--transition-base);
}

/* Topbar - Desktop (Glass) */
.bs-topbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--topbar-height);
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border-bottom: 1px solid var(--glass-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--spacing-xl);
  z-index: 100;
  transition: background-color var(--transition-base);
}

.bs-topbar__logo {
  font-weight: 700;
  font-size: var(--text-lg);
  color: var(--color-primary);
}
.bs-topbar__logo a {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}
.bs-topbar__logo-img {
  border-radius: 4px;
}

.bs-topbar__actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

/* Sidebar - Desktop (Glass Card) */
.bs-sidebar {
  position: fixed;
  left: 12px;
  top: calc(var(--topbar-height) + 12px);
  width: calc(var(--sidebar-width) - 24px);
  max-height: calc(100vh - var(--topbar-height) - 24px);
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
  border-radius: 12px;
  padding: var(--spacing-lg);
  overflow-y: auto;
  transition: background-color var(--transition-base), transform var(--transition-base);
  z-index: 50;
  box-shadow: var(--elevation-2);
}

.bs-nav__item {
  margin-bottom: var(--spacing-sm);
}

.bs-nav__item a {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  color: var(--color-text-muted);
  border-radius: var(--radius-md);
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.bs-nav__item a:hover,
.bs-nav__item a:focus-visible,
.bs-nav__item.is-active a {
  background: var(--color-bg);
  color: var(--color-primary);
}
.bs-nav__item a:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.bs-nav__icon {
  font-size: var(--text-xl);
}

/* Bottom Nav - Mobile */
.bs-bottom-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: var(--bottom-nav-height);
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  display: flex;
  justify-content: space-around;
  align-items: center;
  z-index: 100;
  transition: background-color var(--transition-base);
  display: none;
}

.bs-bottom-nav__item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: var(--spacing-sm);
  color: var(--color-text-muted);
  font-size: var(--text-xs);
  transition: color var(--transition-fast);
}

.bs-bottom-nav__item.is-active,
.bs-bottom-nav__item:focus-visible {
  color: var(--color-primary);
}
.bs-bottom-nav__item:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: -2px;
  border-radius: var(--radius-sm);
}

.bs-bottom-nav__icon {
  font-size: var(--text-xl);
}

/* Main Content */
.bs-main {
  max-width: 1200px;
  margin: 0 auto;
}

.bs-page-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-2xl);
}

/* Grids */
.bs-grid {
  display: grid;
  gap: var(--spacing-lg);
}

.bs-grid--cards {
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
}

.bs-widgets-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-lg);
}

.bs-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

/* Desktop (>768px) */
@media (min-width: 769px) {
  .bs-content {
    margin-left: var(--sidebar-width);
  }

  .bs-bottom-nav {
    display: none;
  }
}

/* Mobile (<768px) */
@media (max-width: 768px) {
  .bs-sidebar {
    transform: translateX(-100%);
  }

  .bs-bottom-nav {
    display: flex;
  }

  .bs-topbar {
    padding: 0 var(--spacing-md);
  }

  .bs-content {
    padding: var(--spacing-md);
    padding-bottom: calc(var(--bottom-nav-height) + var(--spacing-md));
  }
}

/* Reduced motion preference */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}