/* css/layout.css */
.sidebar {
    width: var(--sidebar-width);
    background-color: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
    z-index: 100;
    transition: var(--transition);
}

.sidebar.collapsed {
    width: var(--sidebar-collapsed);
}

.sidebar-header {
    padding: 1rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--border-color);
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, #f59e0b, #ef4444);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    color: white;
    flex-shrink: 0;
}

.logo-text {
    font-weight: 600;
    font-size: var(--font-size-lg);
    white-space: nowrap;
}

.sidebar.collapsed .logo-text {
    display: none;
}

.theme-toggle {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-md);
    background-color: var(--bg-tertiary);
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.theme-toggle:hover {
    background-color: var(--accent-primary);
    color: white;
}

.sidebar.collapsed .theme-toggle {
    display: none;
}

.sidebar-nav {
    flex: 1;
    padding: 1rem 0;
    overflow-y: auto;
}

.nav-list {
    padding: 0 0.75rem;
}

.nav-item {
    margin-bottom: 0.25rem;
}

.nav-link {
    display: flex;
    align-items: center;
    padding: 0.75rem;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    transition: var(--transition);
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    background-color: var(--accent-primary);
    color: white;
}

.nav-link i:first-child {
    width: 20px;
    margin-right: 0.75rem;
    text-align: center;
}

.nav-link span {
    flex: 1;
    white-space: nowrap;
}

.sidebar.collapsed .nav-link span,
.sidebar.collapsed .nav-link .arrow {
    display: none;
}

.arrow {
    font-size: var(--font-size-xs);
    transition: transform 0.3s;
}

.nav-link.active .arrow {
    transform: rotate(180deg);
}

.nav-submenu {
    padding-left: 2.5rem;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.nav-submenu.expanded {
    max-height: 500px;
}

.nav-submenu li a {
    display: flex;
    align-items: center;
    padding: 0.5rem 0.75rem;
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    border-radius: var(--radius-md);
    transition: var(--transition);
}

.nav-submenu li a:hover,
.nav-submenu li a.active {
    color: var(--accent-light);
    background-color: var(--bg-tertiary);
}

.nav-submenu li a i {
    width: 20px;
    margin-right: 0.5rem;
}

.sidebar.collapsed .nav-submenu {
    display: none;
}

.sidebar-footer {
    padding: 1rem;
    border-top: 1px solid var(--border-color);
}

.user-info {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.user-avatar {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, #8b5cf6, #3b82f6);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    flex-shrink: 0;
}

.user-details {
    flex: 1;
    min-width: 0;
}

.user-name {
    font-weight: 500;
    font-size: var(--font-size-sm);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.user-email {
    font-size: var(--font-size-xs);
    color: var(--text-muted);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.logout-btn {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-md);
    color: var(--text-muted);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.logout-btn:hover {
    color: var(--danger);
    background-color: var(--bg-tertiary);
}

.sidebar.collapsed .user-details,
.sidebar.collapsed .logout-btn {
    display: none;
}

.collapse-btn {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    padding: 0.5rem;
    border-radius: var(--radius-md);
    transition: var(--transition);
    width: 100%;
}

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

.collapse-btn i {
    transition: transform 0.3s;
}

.sidebar.collapsed .collapse-btn i {
    transform: rotate(180deg);
}

.sidebar.collapsed .collapse-btn span {
    display: none;
}

/* Mobile Header */
.mobile-header {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    z-index: 99;
    padding: 0 1rem;
    align-items: center;
    justify-content: space-between;
}

.burger-btn {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
    font-size: 1.25rem;
}

.mobile-logo {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, #f59e0b, #ef4444);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
}

.theme-toggle-mobile {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
}

.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 98;
}

/* Main Content */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    transition: var(--transition);
}

.sidebar.collapsed ~ .main-content {
    margin-left: var(--sidebar-collapsed);
}

.page-header {
    height: var(--header-height);
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 1.5rem;
    position: sticky;
    top: 0;
    z-index: 10;
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

.breadcrumb a {
    color: var(--accent-primary);
    transition: var(--transition);
}

.breadcrumb a:hover {
    color: var(--accent-hover);
}

.breadcrumb-separator {
    color: var(--text-muted);
}

.search-box {
    position: relative;
    width: 280px;
}

.search-box input {
    width: 100%;
    padding: 0.5rem 2.5rem 0.5rem 1rem;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: var(--font-size-sm);
    transition: var(--transition);
}

.search-box input:focus {
    outline: none;
    border-color: var(--accent-primary);
}

.search-box i {
    position: absolute;
    right: 0.75rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: var(--font-size-sm);
}

.page-content {
    flex: 1;
    padding: 1.5rem;
    overflow-x: hidden;
}

.page-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: 1.5rem;
}

.main-footer {
    padding: 1rem 1.5rem;
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    color: var(--text-muted);
    font-size: var(--font-size-xs);
}