/* Layout Classes */
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.grid {
  display: grid;
  gap: var(--spacing-md);
}

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

.flex {
  display: flex;
  gap: var(--spacing-md);
}

.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.justify-end { justify-content: flex-end; }
.gap-sm { gap: var(--spacing-sm); }
.gap-lg { gap: var(--spacing-lg); }

.w-full { width: 100%; }
.h-full { height: 100%; }

/* Admin/Dashboard Layout with Sidebar */
.app-layout {
  display: flex;
  min-height: 100vh;
}

/* Sidebar Styling */
.app-sidebar {
  width: 260px;
  background: linear-gradient(180deg, #123c45 0%, #081a1d 100%);
  color: var(--color-white);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  z-index: 100;
  transition: var(--transition-normal);
  border-right: 1px solid rgba(74, 207, 215, 0.08);
  box-shadow: 4px 0 25px rgba(0, 0, 0, 0.15);
}

.sidebar-brand {
  padding: var(--spacing-lg) var(--spacing-xl);
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.sidebar-logo {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--color-primary-cyan), var(--color-accent-teal));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
  font-weight: var(--font-weight-bold);
  font-size: var(--font-size-base);
  box-shadow: 0 0 12px rgba(74, 207, 215, 0.35);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.sidebar-title {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-bold);
  color: var(--color-white);
  margin-bottom: 0;
  letter-spacing: 0.5px;
}

.sidebar-menu {
  list-style: none;
  padding: var(--spacing-lg) 0;
  flex-grow: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.sidebar-item {
  margin: 0 12px 0 8px;
}

.sidebar-item a {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: 10px var(--spacing-md);
  color: rgba(255, 255, 255, 0.65);
  font-weight: var(--font-weight-medium);
  font-size: var(--font-size-sm);
  border-radius: var(--radius-md);
  transition: all var(--transition-normal);
  border: 1px solid transparent;
}

.sidebar-item a svg {
  color: rgba(255, 255, 255, 0.4);
  transition: color var(--transition-fast);
}

.sidebar-item a:hover {
  color: var(--color-white);
  background: rgba(255, 255, 255, 0.05);
  transform: translateX(4px);
}

.sidebar-item a:hover svg {
  color: var(--color-primary-cyan);
}

.sidebar-item.active a {
  color: var(--color-primary-cyan);
  background: linear-gradient(135deg, rgba(74, 207, 215, 0.12) 0%, rgba(31, 90, 102, 0.25) 100%);
  border-color: rgba(74, 207, 215, 0.2);
  font-weight: var(--font-weight-semibold);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.sidebar-item.active a svg {
  color: var(--color-primary-cyan);
}

.sidebar-footer {
  padding: var(--spacing-md) 16px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  background: rgba(0, 0, 0, 0.12);
}

.sidebar-user-card {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-md);
  width: 100%;
}

.sidebar-user-avatar {
  width: 34px;
  height: 34px;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, var(--color-primary-cyan-dark) 0%, var(--color-accent-teal) 100%);
  color: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: var(--font-weight-bold);
  font-size: var(--font-size-sm);
  border: 1.5px solid rgba(255, 255, 255, 0.15);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
  flex-shrink: 0;
}

.sidebar-user-info {
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.sidebar-user-name {
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-sm);
  color: var(--color-white);
  white-space: nowrap;
  text-overflow: ellipsis;
  overflow: hidden;
}

.sidebar-user-role {
  font-size: var(--font-size-xs);
  color: var(--color-neutral-gray);
  text-transform: capitalize;
  white-space: nowrap;
  text-overflow: ellipsis;
  overflow: hidden;
}

/* Main Content Area */
.app-content {
  flex-grow: 1;
  margin-left: 260px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: var(--transition-normal);
}

.app-header {
  height: 70px;
  background: var(--color-white);
  border-bottom: 1px solid var(--color-neutral-light);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--spacing-xl);
  position: sticky;
  top: 0;
  z-index: 90;
  box-shadow: var(--shadow-sm);
}

.header-toggle {
  display: none;
  font-size: var(--font-size-xl);
  color: var(--color-dark);
}

.header-school {
  font-weight: var(--font-weight-semibold);
  color: var(--color-accent-teal);
  background: rgba(31, 90, 102, 0.08);
  padding: var(--spacing-xs) var(--spacing-md);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
}

.main-body {
  padding: var(--spacing-xl);
  flex-grow: 1;
}

/* Auth Layout */
.auth-layout {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-accent-teal-dark) 0%, #0c181a 100%);
  padding: var(--spacing-md);
  position: relative;
  overflow: hidden;
}

.auth-layout::before {
  content: '';
  position: absolute;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(74, 207, 215, 0.15) 0%, transparent 70%);
  top: -100px;
  right: -100px;
  border-radius: var(--radius-full);
}

.auth-layout::after {
  content: '';
  position: absolute;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(31, 90, 102, 0.2) 0%, transparent 70%);
  bottom: -50px;
  left: -50px;
  border-radius: var(--radius-full);
}

.auth-card {
  width: 100%;
  max-width: 440px;
  background: rgba(255, 255, 255, 0.95);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  backdrop-filter: blur(10px);
  padding: var(--spacing-2xl) var(--spacing-xl);
  z-index: 10;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

/* Responsiveness */
@media (max-width: 1024px) {
  .app-sidebar {
    transform: translateX(-100%);
  }
  
  .app-sidebar.show {
    transform: translateX(0);
  }
  
  .app-content {
    margin-left: 0;
  }
  
  .header-toggle {
    display: block;
  }
  
  .grid-cols-4 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .container {
    padding: 0 var(--spacing-md);
  }
  
  .main-body {
    padding: var(--spacing-lg);
  }
  
  .grid-cols-3, .grid-cols-4 {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .grid-cols-2 {
    grid-template-columns: 1fr;
  }
  
  .app-header {
    padding: 0 var(--spacing-md);
  }
}