:root {
    --bg-dark: #0a0e17;
    --bg-sidebar: #0f172a;
    --bg-card: #141e33;
    --bg-card-hover: #1a2742;
    --border: #22324d;
    --border-hover: #3b82f6;

    --primary: #38bdf8;
    --primary-glow: rgba(56, 189, 248, 0.25);
    --accent-purple: #c084fc;
    --accent-green: #22c55e;
    --accent-amber: #f59e0b;
    --accent-red: #ef4444;

    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

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

body {
    background-color: var(--bg-dark);
    color: var(--text-primary);
    font-family: var(--font-sans);
    line-height: 1.5;
    min-height: 100vh;
}

/* Login Screen */
.login-wrap {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    background: radial-gradient(circle at 50% 30%, rgba(56, 189, 248, 0.1) 0%, transparent 60%);
}

.login-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 420px;
    padding: 36px 30px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
    text-align: center;
}

.login-brand {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 24px;
}
.login-brand img { width: 44px; height: 44px; border-radius: 10px; }
.login-brand h2 { font-size: 1.4rem; font-weight: 800; }

.login-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 24px;
}

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

.admin-sidebar {
    width: 250px;
    background: var(--bg-sidebar);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    padding: 24px 16px;
    flex-shrink: 0;
}

.sidebar-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    padding-bottom: 20px;
    margin-bottom: 20px;
    border-bottom: 1px solid var(--border);
    color: #fff;
    text-decoration: none;
}
.sidebar-brand img { width: 32px; height: 32px; border-radius: 8px; }
.sidebar-brand h3 { font-size: 1.1rem; font-weight: 800; }

.sidebar-nav {
    display: flex;
    flex-direction: column;
    gap: 6px;
    flex-grow: 1;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 14px;
    text-decoration: none;
    border: none;
    background: transparent;
    cursor: pointer;
    text-align: left;
    width: 100%;
    transition: all 0.2s;
}
.nav-item:hover { color: #fff; background: rgba(255, 255, 255, 0.05); }
.nav-item.active { background: var(--primary); color: #071529; font-weight: 700; }

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

.admin-main {
    flex-grow: 1;
    padding: 30px;
    overflow-y: auto;
}

.main-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 28px;
}
.main-header h2 { font-size: 1.6rem; font-weight: 800; }

/* KPI Grid */
.kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 18px;
    margin-bottom: 30px;
}

.kpi-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 16px;
}

.kpi-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    background: rgba(56, 189, 248, 0.12);
    color: var(--primary);
}

.kpi-info h4 { font-size: 0.85rem; color: var(--text-secondary); text-transform: uppercase; letter-spacing: 0.5px; }
.kpi-info .val { font-size: 1.8rem; font-weight: 900; color: #fff; line-height: 1.1; margin-top: 4px; }

/* Admin Panels & Tables */
.admin-panel {
    display: none;
}
.admin-panel.active {
    display: block;
    animation: fadeIn 0.2s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(4px); }
    to { opacity: 1; transform: translateY(0); }
}

.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 24px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.3);
    margin-bottom: 24px;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}
.card-header h3 { font-size: 1.25rem; font-weight: 700; }

.table-wrap {
    overflow-x: auto;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
    text-align: left;
}

.data-table th, .data-table td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--border);
}

.data-table th {
    background: #101a2e;
    color: var(--text-secondary);
    font-weight: 700;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

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

/* Badges */
.badge {
    display: inline-block;
    padding: 3px 8px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 700;
}
.badge-green { background: rgba(34, 197, 94, 0.2); color: #4ade80; border: 1px solid rgba(34, 197, 94, 0.4); }
.badge-amber { background: rgba(245, 158, 11, 0.2); color: #fcd34d; border: 1px solid rgba(245, 158, 11, 0.4); }
.badge-red { background: rgba(239, 68, 68, 0.2); color: #fca5a5; border: 1px solid rgba(239, 68, 68, 0.4); }
.badge-gray { background: #263854; color: #94a3b8; }

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 9px 16px;
    font-size: 13px;
    font-weight: 700;
    border-radius: var(--radius-sm);
    border: none;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.15s ease;
}
.btn:active { transform: scale(0.97); }

.btn-primary { background: var(--primary); color: #041226; }
.btn-primary:hover { background: #7dd3fc; }

.btn-secondary { background: #24354d; color: #e2e8f0; }
.btn-secondary:hover { background: #334869; }

.btn-danger { background: rgba(239, 68, 68, 0.18); color: #f87171; border: 1px solid rgba(239, 68, 68, 0.3); }
.btn-danger:hover { background: rgba(239, 68, 68, 0.3); }

.btn-sm { padding: 5px 10px; font-size: 12px; }

/* Form Controls */
.form-group {
    margin-bottom: 16px;
}
.form-group label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 6px;
}
.form-control {
    width: 100%;
    background: #090e18;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 10px 14px;
    color: #fff;
    font-size: 14px;
    outline: none;
    transition: border-color 0.2s;
}
.form-control:focus { border-color: var(--primary); }
textarea.form-control { resize: vertical; min-height: 80px; }

.form-check {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 10px;
    cursor: pointer;
}
.form-check input { width: 16px; height: 16px; cursor: pointer; }

/* Modal */
.modal-overlay {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0, 0, 0, 0.75);
    backdrop-filter: blur(6px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    padding: 20px;
}
.modal-overlay.show { display: flex; }

.modal-dialog {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 540px;
    padding: 28px;
    box-shadow: 0 20px 50px rgba(0,0,0,0.6);
}
.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}
.modal-header h3 { font-size: 1.3rem; font-weight: 700; }
.modal-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 24px;
    cursor: pointer;
}

/* Responsive */
@media (max-width: 768px) {
    .admin-layout { flex-direction: column; }
    .admin-sidebar { width: 100%; height: auto; border-right: none; border-bottom: 1px solid var(--border); }
    .admin-main { padding: 16px; }
}