/* ===================================
   Admin Base CSS - Core Design System
   =================================== */

:root {
    /* Modern Color Palette */
    --primary-50: #f0f9ff;
    --primary-100: #e0f2fe;
    --primary-200: #bae6fd;
    --primary-300: #7dd3fc;
    --primary-400: #38bdf8;
    --primary-500: #0ea5e9;
    --primary-600: #0284c7;
    --primary-700: #0369a1;
    --primary-800: #075985;
    --primary-900: #0c4a6e;
    
    --secondary-50: #f8fafc;
    --secondary-100: #f1f5f9;
    --secondary-200: #e2e8f0;
    --secondary-300: #cbd5e1;
    --secondary-400: #94a3b8;
    --secondary-500: #64748b;
    --secondary-600: #475569;
    --secondary-700: #334155;
    --secondary-800: #1e293b;
    --secondary-900: #0f172a;
    --secondary-300: #cbd5e1;
    --secondary-400: #94a3b8;
    
    --success-50: #f0fdf4;
    --success-100: #dcfce7;
    --success-200: #bbf7d0;
    --success-300: #86efac;
    --success-400: #4ade80;
    --success-500: #22c55e;
    --success-600: #16a34a;
    --success-700: #15803d;
    --success-800: #166534;
    --success-900: #14532d;
    
    --warning-50: #fffbeb;
    --warning-100: #fef3c7;
    --warning-200: #fde68a;
    --warning-300: #fcd34d;
    --warning-400: #fbbf24;
    --warning-500: #f59e0b;
    --warning-600: #d97706;
    --warning-700: #b45309;
    --warning-800: #92400e;
    --warning-900: #78350f;
    
    --danger-50: #fef2f2;
    --danger-100: #fee2e2;
    --danger-200: #fecaca;
    --danger-300: #fca5a5;
    --danger-400: #f87171;
    --danger-500: #ef4444;
    --danger-600: #dc2626;
    --danger-700: #b91c1c;
    --danger-800: #991b1b;
    --danger-900: #7f1d1d;
    
    --purple-50: #faf5ff;
    --purple-100: #f3e8ff;
    --purple-200: #e9d5ff;
    --purple-300: #d8b4fe;
    --purple-400: #c084fc;
    --purple-500: #a855f7;
    --purple-600: #9333ea;
    --purple-700: #7c3aed;
    --purple-800: #6b21a8;
    --purple-900: #581c87;
    
    /* Layout Variables */
    --sidebar-width: 280px;
    --header-height: 72px;
    --border-radius: 12px;
    --border-radius-lg: 16px;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    background: linear-gradient(135deg, var(--secondary-50) 0%, var(--primary-50) 100%);
    color: var(--secondary-800);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

/* Sidebar Styles */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background: linear-gradient(180deg, #1e293b 0%, #0f172a 100%);
    padding: 2rem 0;
    z-index: 1000;
    overflow-y: auto;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 4px 0 20px rgba(0, 0, 0, 0.15);
    border-right: 1px solid rgba(255, 255, 255, 0.1);
}

.sidebar-brand {
    padding: 0 2rem;
    margin-bottom: 3rem;
    text-align: center;
}

.sidebar-brand h2 {
    color: white;
    font-weight: 800;
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.sidebar-brand p {
    color: var(--secondary-400);
    font-size: 0.875rem;
    font-weight: 500;
}

.sidebar-nav {
    padding: 0 1rem;
}

.nav-section {
    margin-bottom: 2rem;
}

.nav-section-title {
    color: #94a3b8;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    padding: 0 1rem;
    margin-bottom: 1rem;
}

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

.nav-link {
    display: flex;
    align-items: center;
    padding: 0.875rem 1rem;
    color: #cbd5e1;
    text-decoration: none;
    border-radius: 8px;
    font-weight: 500;
    transition: all 0.2s ease;
    position: relative;
    overflow: hidden;
}

.nav-link:hover {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    transform: translateX(4px);
    text-decoration: none;
}

.nav-link.active {
    background: linear-gradient(135deg, #3b82f6, #2563eb);
    color: white;
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
}

.nav-link i {
    width: 20px;
    margin-right: 0.75rem;
    font-size: 1.1rem;
}

.nav-badge {
    background: var(--danger-500);
    color: white;
    font-size: 0.6rem;
    padding: 0.2rem 0.4rem;
    border-radius: 50px;
    margin-left: auto;
    font-weight: 600;
    min-width: 1.2rem;
    text-align: center;
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    display: inline-block;
}

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

.main-header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--secondary-200);
    padding: 0;
    position: sticky;
    top: 0;
    z-index: 999;
    box-shadow: var(--shadow-sm);
}

.page-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--secondary-800);
    margin: 0;
}

.main-content-body {
    padding: 2rem;
    flex: 1;
    overflow-y: auto;
}

/* Cards */
.card {
    background: white;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow);
    border: none;
    overflow: hidden;
    transition: all 0.2s ease;
}

.card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.card-header {
    background: white;
    border-bottom: 1px solid var(--secondary-100);
    padding: 1.5rem;
    font-weight: 600;
}

.card-body {
    padding: 1.5rem;
}

.card-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--secondary-800);
}

/* Buttons */
.btn {
    padding: 0.75rem 1.5rem;
    font-weight: 600;
    border-radius: var(--border-radius);
    transition: all 0.2s ease;
    border: none;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-500), var(--primary-600));
    color: white;
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-600), var(--primary-700));
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
    color: white;
}

.btn-outline-primary {
    background: transparent;
    color: var(--primary-600);
    border: 2px solid var(--primary-200);
}

.btn-outline-primary:hover {
    background: var(--primary-500);
    color: white;
    border-color: var(--primary-500);
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

/* Badges */
.badge {
    padding: 0.375rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 50px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.badge-success {
    background: var(--success-100);
    color: var(--success-800);
}

.badge-warning {
    background: var(--warning-100);
    color: var(--warning-800);
}

.badge-danger {
    background: var(--danger-100);
    color: var(--danger-800);
}

.badge-info {
    background: var(--primary-100);
    color: var(--primary-800);
}

/* Tables */
.table {
    margin-bottom: 0;
}

.table th {
    background: var(--secondary-50);
    border-bottom: 2px solid var(--secondary-200);
    font-weight: 600;
    color: var(--secondary-700);
    padding: 1rem;
}

.table td {
    padding: 1rem;
    border-bottom: 1px solid var(--secondary-100);
    vertical-align: middle;
}

.table-hover tbody tr:hover {
    background: var(--secondary-50);
}

/* Forms */
.form-control {
    border: 2px solid var(--secondary-200);
    border-radius: var(--border-radius);
    padding: 0.875rem 1rem;
    font-size: 0.875rem;
    transition: all 0.2s ease;
    background: white;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-500);
    box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.1);
    transform: translateY(-1px);
}

.form-label {
    font-weight: 600;
    color: var(--secondary-700);
    margin-bottom: 0.5rem;
}

/* Responsive Design */
@media (max-width: 1200px) {
    .sidebar {
        width: 240px;
    }
    
    .main-content {
        margin-left: 240px;
    }
}

@media (max-width: 992px) {
    .sidebar {
        transform: translateX(-100%);
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .sidebar.show {
        transform: translateX(0);
    }
}

@media (max-width: 768px) {
    .main-content-body {
        padding: 1rem;
    }
    
    .main-header {
        padding: 1rem;
    }
}