/* Reset & Basics */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: var(--font-family-base);
}

body {
    background-color: var(--color-bg-base);
    color: var(--color-text-main);
    transition: background-color var(--transition-normal), color var(--transition-normal);
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

button {
    cursor: pointer;
    border: none;
    background: none;
    font-family: inherit;
}

/* Layout */
.app-container {
    display: flex;
    min-height: 100vh;
    width: 100%;
}

.sidebar {
    width: 260px;
    background-color: var(--color-bg-surface);
    border-right: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
    z-index: 100;
    transition: transform var(--transition-normal);
}

.main-wrapper {
    flex: 1;
    margin-left: 260px;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* Sidebar Components */
.sidebar-header {
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    border-bottom: 1px solid var(--color-border-light);
}

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--color-primary-dark);
}

.logo-icon {
    font-size: 28px;
    color: var(--color-primary);
}

.logo h2 {
    font-size: 20px;
    font-weight: 800;
    letter-spacing: -0.5px;
}

.fw-light {
    font-weight: 400;
    color: var(--color-text-main);
}

.sidebar-nav {
    flex: 1;
    padding: 24px 16px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border-radius: var(--radius-md);
    color: var(--color-text-muted);
    font-weight: 500;
    transition: all var(--transition-fast);
}

.nav-item i {
    font-size: 20px;
}

.nav-item:hover {
    background-color: var(--color-bg-surface-hover);
    color: var(--color-text-main);
}

.nav-item.active {
    background-color: var(--color-primary-light);
    color: var(--color-primary-dark);
}
html[data-theme="dark"] .nav-item.active {
    color: var(--color-primary);
}

.nav-divider {
    height: 1px;
    background-color: var(--color-border-light);
    margin: 12px 0;
}

.nav-category {
    font-size: 12px;
    text-transform: uppercase;
    font-weight: 700;
    color: var(--color-text-muted);
    padding: 0 16px;
    margin-bottom: 8px;
    letter-spacing: 0.5px;
}

.sidebar-footer {
    padding: 16px;
    border-top: 1px solid var(--color-border-light);
}

.user-profile {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 8px;
    border-radius: var(--radius-md);
    transition: background var(--transition-fast);
    cursor: pointer;
}

.user-profile:hover {
    background-color: var(--color-bg-surface-hover);
}

.avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    overflow: hidden;
    flex-shrink: 0;
}

.avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

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

.user-info strong {
    font-size: 14px;
    color: var(--color-text-main);
}

.user-info span {
    font-size: 12px;
    color: var(--color-text-muted);
}

/* Topbar Components */
.top-header {
    height: 72px;
    background-color: var(--color-bg-surface);
    border-bottom: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 32px;
    position: sticky;
    top: 0;
    z-index: 90;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 16px;
}

.page-title {
    font-size: 24px;
    font-weight: 700;
    color: var(--color-text-main);
}

.header-right {
    display: flex;
    align-items: center;
    gap: 20px;
}

.search-bar {
    position: relative;
    display: flex;
    align-items: center;
}

.search-bar i {
    position: absolute;
    left: 12px;
    color: var(--color-text-muted);
}

.search-bar input {
    width: 240px;
    height: 40px;
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-full);
    padding: 0 16px 0 36px;
    background-color: var(--color-bg-base);
    color: var(--color-text-main);
    outline: none;
    transition: width var(--transition-normal), border var(--transition-fast);
}

.search-bar input:focus {
    width: 300px;
    border-color: var(--color-primary);
}

.btn-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-muted);
    font-size: 22px;
    transition: all var(--transition-fast);
}

.btn-icon:hover {
    background-color: var(--color-bg-base);
    color: var(--color-text-main);
}

.badge-container {
    position: relative;
}

.badge {
    position: absolute;
    top: 4px;
    right: 4px;
    background-color: var(--color-danger);
    color: white;
    font-size: 10px;
    font-weight: bold;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid var(--color-bg-surface);
}

/* Content Area */
.content-area {
    padding: 32px;
    flex: 1;
}

/* Base View class for transitions */
.view-section {
    animation: fadeIn 0.4s ease forwards;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Utilities */
.grid {
    display: grid;
    gap: 24px;
}

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

/* Components */
.card {
    background-color: var(--color-bg-surface);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border-light);
    box-shadow: var(--shadow-card);
    padding: 24px;
}

.card-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--color-text-muted);
    margin-bottom: 16px;
}

.stat-value {
    font-size: 32px;
    font-weight: 800;
    color: var(--color-text-main);
    margin-bottom: 8px;
}

.stat-trend {
    font-size: 14px;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 8px;
    border-radius: var(--radius-sm);
    font-weight: 600;
}

.trend-up {
    color: var(--color-success);
    background-color: rgba(16, 185, 129, 0.1);
}

.trend-down {
    color: var(--color-danger);
    background-color: rgba(239, 68, 68, 0.1);
}

/* Tables */
.table-container {
    width: 100%;
    overflow-x: auto;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
}

.data-table th, .data-table td {
    padding: 16px;
    text-align: left;
    border-bottom: 1px solid var(--color-border-light);
}

.data-table th {
    font-size: 13px;
    text-transform: uppercase;
    color: var(--color-text-muted);
    font-weight: 600;
    background-color: var(--color-bg-surface);
}

.data-table td {
    font-size: 14px;
    color: var(--color-text-main);
}

.data-table tbody tr {
    transition: background-color var(--transition-fast);
}

.data-table tbody tr:hover {
    background-color: var(--color-bg-base);
}

.badge-status {
    padding: 6px 12px;
    border-radius: var(--radius-full);
    font-size: 12px;
    font-weight: 600;
    display: inline-block;
}
.status-success { background: rgba(16,185,129,0.1); color: var(--color-success); }
.status-warning { background: rgba(245,158,11,0.1); color: var(--color-warning); }
.status-info { background: rgba(59,130,246,0.1); color: var(--color-info); }

/* Responsive */
.d-lg-none {
    display: none;
}

@media (max-width: 1024px) {
    .d-lg-none {
        display: flex;
    }
    
    .sidebar {
        transform: translateX(-100%);
    }
    
    .sidebar.open {
        transform: translateX(0);
        box-shadow: var(--shadow-lg);
    }
    
    .main-wrapper {
        margin-left: 0;
    }
    
    .grid-cols-4 { grid-template-columns: repeat(2, 1fr); }
    .search-bar input { width: 140px; }
}

@media (max-width: 768px) {
    .grid-cols-4, .grid-cols-3, .grid-cols-2 { grid-template-columns: 1fr; }
    .content-area { padding: 16px; }
    .top-header { padding: 0 16px; }
    .search-bar { display: none; }
}