/* Professional Admin Dashboard Design System - YUKALOKA */
:root {
    /* Color Palette */
    --primary: #4f46e5;
    --primary-hover: #4338ca;
    --primary-light: #eef2ff;
    --secondary: #64748b;
    --dark: #0f172a;
    --bg-main: #f8fafc;
    --bg-white: #ffffff;
    --border: #e2e8f0;
    --text-main: #1e293b;
    --text-muted: #64748b;

    /* Semantic Colors */
    --success: #10b981;
    --success-light: #ecfdf5;
    --danger: #ef4444;
    --danger-light: #fef2f2;
    --warning: #f59e0b;
    --warning-light: #fffbeb;
    --info: #3b82f6;
    --info-light: #eff6ff;

    /* Spacing & Borders */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.04), 0 1px 2px 0 rgba(0, 0, 0, 0.02);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.06), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.04);

    /* Transitions */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    color: var(--text-main);
    background: var(--bg-main);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

/* Layout Structure */
.admin-layout {
    display: flex;
    min-height: 100vh;
}

/* Sidebar Styling */
.sidebar {
    width: 280px;
    background: var(--dark);
    color: white;
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    z-index: 50;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.sidebar-brand {
    padding: 2rem 1.5rem;
    font-size: 1.5rem;
    font-weight: 800;
    color: white;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.sidebar-brand span {
    color: var(--primary);
}

.sidebar-menu {
    list-style: none;
    flex: 1;
    overflow-y: auto;
    padding: 1rem 0;
}

.sidebar-menu li a {
    display: flex;
    align-items: center;
    padding: 0.875rem 1.25rem;
    margin: 0.25rem 1rem;
    border-radius: var(--radius-md);
    color: #94a3b8;
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9375rem;
    transition: var(--transition);
    gap: 0.75rem;
}

.sidebar-menu li a:hover {
    background: rgba(255, 255, 255, 0.05);
    color: white;
}

.sidebar-menu li.active a {
    background: var(--primary);
    color: white;
    box-shadow: 0 4px 6px -1px rgba(79, 70, 229, 0.4);
}

/* Main Content Area */
.main-content {
    flex: 1;
    margin-left: 280px;
    padding: 2rem;
    max-width: 100%;
}

/* Header & Top Bar */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    background: var(--bg-white);
    padding: 1.25rem 2rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
}

.header-left {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--dark);
}

.page-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--dark);
}

.header-right {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 600;
}

.avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--primary-light);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
}

/* Stats Cards */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2.5rem;
}

.stat-card {
    background: var(--bg-white);
    padding: 1.5rem;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
    transition: transform 0.2s ease;
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.stat-label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.025em;
    margin-bottom: 0.5rem;
}

.stat-content {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
}

.stat-value {
    font-size: 2rem;
    font-weight: 800;
    color: var(--dark);
}

.stat-icon {
    font-size: 2rem;
    opacity: 0.2;
}

/* Content Cards */
.card {
    background: var(--bg-white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
    overflow: hidden;
    margin-bottom: 2rem;
}

.card-header {
    padding: 1.25rem 1.5rem;
    background: #fcfcfd;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.card-header h3 {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--dark);
}

.card-body {
    padding: 1.5rem;
}

/* Tables Styling */
.table-responsive {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

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

th {
    padding: 1rem 1.5rem;
    text-align: left;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--text-muted);
    background: var(--bg-main);
    letter-spacing: 0.05em;
}

td {
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--border);
    font-size: 0.875rem;
    vertical-align: middle;
}

tr:last-child td {
    border-bottom: none;
}

/* Badges */
.badge {
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
}

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

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

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

.badge-info {
    background: var(--info-light);
    color: var(--info);
}

.badge-pending {
    background: var(--warning-light);
    color: var(--warning);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.625rem 1.25rem;
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
    border: 1px solid transparent;
    text-decoration: none;
    white-space: nowrap;
}

.btn-primary {
    background: var(--primary);
    color: white;
    box-shadow: 0 2px 4px rgba(79, 70, 229, 0.3);
}

.btn-primary:hover {
    background: var(--primary-hover);
    box-shadow: 0 4px 6px rgba(79, 70, 229, 0.4);
    transform: translateY(-1px);
}

.btn-outline {
    background: transparent;
    border-color: var(--border);
    color: var(--text-main);
}

.btn-outline:hover {
    background: var(--bg-main);
}

.btn-sm {
    padding: 0.375rem 0.75rem;
    font-size: 0.75rem;
}

/* Forms */
.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--dark);
}

input,
select,
textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    font-size: 0.9375rem;
    color: var(--text-main);
    background-color: var(--bg-white);
    transition: var(--transition);
}

input:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

/* Login Page Styling */
.login-page {
    background: linear-gradient(135deg, var(--dark) 0%, #1e1b4b 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
}

.login-card {
    background: var(--bg-white);
    padding: 3rem;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    width: 100%;
    max-width: 440px;
}

/* Overlay for Mobile Sidebar */
.overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.5);
    backdrop-filter: blur(4px);
    z-index: 40;
}

/* Responsive Overrides */
@media (max-width: 1024px) {
    .sidebar {
        transform: translateX(-100%);
    }

    .sidebar.open {
        transform: translateX(0);
    }

    .main-content {
        margin-left: 0;
    }

    .menu-toggle {
        display: block;
    }

    .overlay.active {
        display: block;
    }
}

@media (max-width: 640px) {
    .page-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
        padding: 1rem 1.5rem;
    }

    .header-right {
        width: 100%;
        justify-content: space-between;
    }

    .main-content {
        padding: 1rem;
    }
}

/* Utils */
.text-center {
    text-align: center;
}

.mt-1 {
    margin-top: 0.25rem;
}

.mt-2 {
    margin-top: 0.5rem;
}

.mt-4 {
    margin-top: 1rem;
}

.mb-4 {
    margin-bottom: 1rem;
}