/* admin.css - Professional Management Dashboard */
@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
    --admin-bg: #090D16;
    --admin-sidebar: #0D1322;
    --admin-card: #131B2E;
    --admin-card-hover: #1A243D;
    --admin-border: #1E293B;
    --admin-border-light: #2D3D58;
    
    --primary: #3B82F6;
    --primary-hover: #2563EB;
    --success: #10B981;
    --warning: #F59E0B;
    --danger: #EF4444;
    --whatsapp: #25D366;
    
    --text-primary: #F8FAFC;
    --text-secondary: #94A3B8;
    --text-muted: #64748B;
}

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

body {
    font-family: 'Plus Jakarta Sans', sans-serif;
    background-color: var(--admin-bg);
    color: var(--text-primary);
    line-height: 1.5;
    min-height: 100vh;
}

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

.admin-sidebar {
    width: 260px;
    background: var(--admin-sidebar);
    border-right: 1px solid var(--admin-border);
    display: flex;
    flex-direction: column;
    padding: 24px 16px;
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    z-index: 100;
}

.sidebar-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.15rem;
    font-weight: 700;
    color: #FFFFFF;
    padding: 0 12px 24px 12px;
    border-bottom: 1px solid var(--admin-border);
    text-decoration: none;
}

.sidebar-brand-badge {
    background: rgba(59, 130, 246, 0.15);
    color: #60A5FA;
    font-size: 0.72rem;
    padding: 2px 8px;
    border-radius: 999px;
    font-weight: 700;
    text-transform: uppercase;
}

.sidebar-nav {
    list-style: none;
    margin-top: 24px;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.sidebar-nav a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 14px;
    border-radius: 8px;
    color: var(--text-secondary);
    font-size: 0.92rem;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.2s ease;
}

.sidebar-nav a:hover, .sidebar-nav a.active {
    background: rgba(59, 130, 246, 0.12);
    color: #FFFFFF;
}

.sidebar-nav a.active {
    border-left: 3px solid var(--primary);
    color: #60A5FA;
}

.sidebar-nav a svg {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

.sidebar-footer {
    margin-top: auto;
    padding-top: 16px;
    border-top: 1px solid var(--admin-border);
}

.admin-main {
    flex: 1;
    margin-left: 260px;
    padding: 32px 40px;
}

/* Header */
.admin-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 32px;
}

.admin-header h1 {
    font-size: 1.8rem;
    font-weight: 800;
}

.admin-header-subtitle {
    color: var(--text-secondary);
    font-size: 0.92rem;
    margin-top: 4px;
}

/* Stat Cards */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
    margin-bottom: 32px;
}

.stat-card {
    background: var(--admin-card);
    border: 1px solid var(--admin-border);
    border-radius: 12px;
    padding: 22px;
}

.stat-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-secondary);
    font-size: 0.88rem;
    font-weight: 500;
    margin-bottom: 10px;
}

.stat-value {
    font-size: 1.9rem;
    font-weight: 800;
    color: #FFFFFF;
}

.stat-sub {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 6px;
}

/* Panels */
.panel {
    background: var(--admin-card);
    border: 1px solid var(--admin-border);
    border-radius: 14px;
    padding: 28px;
    margin-bottom: 32px;
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--admin-border);
}

.panel-title {
    font-size: 1.25rem;
    font-weight: 700;
}

/* Form Controls */
.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
}

.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.form-control {
    width: 100%;
    padding: 11px 16px;
    background: rgba(9, 13, 22, 0.6);
    border: 1px solid var(--admin-border-light);
    border-radius: 8px;
    color: #FFFFFF;
    font-family: inherit;
    font-size: 0.95rem;
    transition: border-color 0.2s;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

textarea.form-control {
    min-height: 90px;
    resize: vertical;
}

/* WhatsApp Share Button */
.btn-whatsapp {
    background: #25D366;
    color: #FFFFFF;
    font-weight: 600;
}

.btn-whatsapp:hover {
    background: #20BA59;
    color: #FFFFFF;
}

/* Data Table */
.table-responsive {
    overflow-x: auto;
}

.admin-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.92rem;
}

.admin-table th {
    text-align: left;
    padding: 12px 16px;
    background: rgba(9, 13, 22, 0.5);
    color: var(--text-secondary);
    font-weight: 600;
    border-bottom: 1px solid var(--admin-border);
}

.admin-table td {
    padding: 14px 16px;
    border-bottom: 1px solid var(--admin-border);
    color: var(--text-primary);
}

.admin-table tr:hover td {
    background: rgba(255, 255, 255, 0.02);
}

.mono {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85rem;
    color: #60A5FA;
}

/* Badges */
.badge-status {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 10px;
    border-radius: 999px;
    font-size: 0.78rem;
    font-weight: 700;
    text-transform: uppercase;
}

.badge-paid {
    background: rgba(16, 185, 129, 0.15);
    color: #34D399;
    border: 1px solid rgba(16, 185, 129, 0.3);
}

.badge-pending {
    background: rgba(245, 158, 11, 0.15);
    color: #FBBF24;
    border: 1px solid rgba(245, 158, 11, 0.3);
}

/* Modal / Generated Link Box */
.link-box {
    background: rgba(9, 13, 22, 0.8);
    border: 1px solid var(--admin-border-light);
    border-radius: 10px;
    padding: 20px;
    margin-top: 24px;
}

.link-input-group {
    display: flex;
    gap: 10px;
    margin-top: 10px;
}

/* Toast */
.toast-notification {
    position: fixed;
    bottom: 24px;
    right: 24px;
    background: #1E293B;
    color: #FFFFFF;
    padding: 12px 20px;
    border-radius: 8px;
    border: 1px solid var(--primary);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.5);
    z-index: 1000;
    display: none;
    font-size: 0.9rem;
    animation: fadeIn 0.3s ease;
}

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

@media (max-width: 900px) {
    .admin-sidebar {
        width: 100%;
        position: relative;
        height: auto;
    }
    .admin-layout {
        flex-direction: column;
    }
    .admin-main {
        margin-left: 0;
        padding: 20px;
    }
}