:root {
    --primary: #00d9ff;
    --primary-dark: #00a8cc;
    --secondary: #ffd700;
    --bg-dark: #0a0e1a;
    --bg-card: #151b2e;
    --bg-sidebar: #0f1419;
    --text-light: #ffffff;
    --text-muted: #a0aec0;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --blue: #3b82f6;
    --purple: #8b5cf6;
    --orange: #f97316;
    --border: rgba(255, 255, 255, 0.1);
}

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

body {
    font-family: 'Inter', sans-serif;
    background: var(--bg-dark);
    color: var(--text-light);
    overflow-x: hidden;
}

/* Login Screen */
.login-screen {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--bg-dark) 0%, #1a1f35 100%);
}

.login-container {
    background: var(--bg-card);
    padding: 40px;
    border-radius: 16px;
    width: 100%;
    max-width: 420px;
    border: 1px solid var(--border);
}

.login-header {
    text-align: center;
    margin-bottom: 32px;
}

.login-header h1 {
    font-size: 32px;
    color: var(--primary);
    margin-bottom: 8px;
    letter-spacing: 2px;
}

.login-header p {
    color: var(--text-muted);
    font-size: 14px;
}

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

.login-form label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-muted);
    font-size: 14px;
    font-weight: 500;
}

.login-form input {
    width: 100%;
    padding: 12px 16px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-light);
    font-size: 15px;
    transition: all 0.3s;
}

.login-form input:focus {
    outline: none;
    border-color: var(--primary);
    background: rgba(255, 255, 255, 0.08);
}

.error-message {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid var(--danger);
    color: var(--danger);
    padding: 12px;
    border-radius: 8px;
    margin-top: 16px;
    font-size: 14px;
}

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

/* Sidebar */
.sidebar {
    width: 260px;
    background: var(--bg-sidebar);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
    overflow-y: auto;
}

.sidebar-header {
    padding: 24px 20px;
    border-bottom: 1px solid var(--border);
}

.sidebar-header h2 {
    font-size: 24px;
    color: var(--primary);
    letter-spacing: 1px;
    margin-bottom: 4px;
}

.sidebar-header .badge {
    background: var(--primary);
    color: var(--bg-dark);
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 600;
}

.sidebar-nav {
    flex: 1;
    padding: 16px 0;
}

.nav-item {
    display: flex;
    align-items: center;
    padding: 12px 20px;
    color: var(--text-muted);
    text-decoration: none;
    transition: all 0.2s;
    border-left: 3px solid transparent;
}

.nav-item:hover {
    background: rgba(0, 217, 255, 0.05);
    color: var(--text-light);
}

.nav-item.active {
    background: rgba(0, 217, 255, 0.1);
    border-left-color: var(--primary);
    color: var(--primary);
}

.nav-item i {
    width: 24px;
    margin-right: 12px;
    font-size: 18px;
}

.nav-divider {
    height: 1px;
    background: var(--border);
    margin: 16px 20px;
}

/* Main Content */
.main-content {
    flex: 1;
    margin-left: 260px;
    background: var(--bg-dark);
}

.content-header {
    background: var(--bg-card);
    padding: 24px 32px;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.content-header h1 {
    font-size: 28px;
    font-weight: 600;
}

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

.user-info {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-muted);
}

.user-info i {
    font-size: 24px;
}

/* Pages */
.page {
    display: none;
    padding: 32px;
}

.page.active {
    display: block;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 24px;
    margin-bottom: 32px;
}

.stat-card {
    background: var(--bg-card);
    padding: 24px;
    border-radius: 12px;
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    gap: 16px;
}

.stat-icon {
    width: 56px;
    height: 56px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
}

.stat-icon.blue {
    background: rgba(59, 130, 246, 0.1);
    color: var(--blue);
}

.stat-icon.green {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success);
}

.stat-icon.purple {
    background: rgba(139, 92, 246, 0.1);
    color: var(--purple);
}

.stat-icon.orange {
    background: rgba(249, 115, 22, 0.1);
    color: var(--orange);
}

.stat-info h3 {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 4px;
}

.stat-info p {
    color: var(--text-muted);
    font-size: 14px;
}

/* Content Section */
.content-section {
    background: var(--bg-card);
    padding: 24px;
    border-radius: 12px;
    border: 1px solid var(--border);
}

.content-section h2 {
    font-size: 20px;
    margin-bottom: 20px;
    font-weight: 600;
}

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

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

.data-table thead {
    background: rgba(0, 217, 255, 0.05);
}

.data-table th {
    padding: 12px 16px;
    text-align: left;
    font-weight: 600;
    color: var(--primary);
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

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

.data-table tbody tr:hover {
    background: rgba(0, 217, 255, 0.03);
}

.text-center {
    text-align: center;
}

/* Buttons */
.btn-primary,
.btn-secondary {
    padding: 10px 20px;
    border-radius: 8px;
    border: none;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(0, 217, 255, 0.4);
}

.btn-secondary {
    background: var(--bg-dark);
    color: var(--text-light);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.05);
}

.btn-edit,
.btn-delete {
    padding: 6px 12px;
    border-radius: 6px;
    border: none;
    cursor: pointer;
    font-size: 13px;
    font-weight: 600;
    transition: all 0.2s;
}

.btn-edit {
    background: var(--warning);
    color: white;
}

.btn-delete {
    background: var(--danger);
    color: white;
}

/* Status Badges */
.status-badge {
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
    display: inline-block;
}

.status-pending {
    background: rgba(249, 115, 22, 0.1);
    color: var(--orange);
}

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

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

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

.status-disabled {
    background: rgba(107, 114, 128, 0.1);
    color: var(--text-muted);
}

/* Page Header */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}

/* Settings */
.settings-container {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.settings-section {
    background: var(--bg-card);
    padding: 24px;
    border-radius: 12px;
    border: 1px solid var(--border);
}

.settings-section h2 {
    font-size: 20px;
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    gap: 12px;
}

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

.settings-form label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-muted);
    font-size: 14px;
    font-weight: 500;
}

.settings-form input,
.settings-form select,
.settings-form textarea {
    width: 100%;
    padding: 12px 16px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-light);
    font-size: 15px;
    font-family: 'Inter', sans-serif;
}

.settings-form input:focus,
.settings-form select:focus,
.settings-form textarea:focus {
    outline: none;
    border-color: var(--primary);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
    width: auto;
}

.form-actions {
    display: flex;
    gap: 12px;
    margin-top: 24px;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(5px);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--bg-card);
    border-radius: 16px;
    width: 90%;
    max-width: 600px;
    border: 1px solid var(--border);
}

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

.modal-header h3 {
    font-size: 20px;
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 24px;
    cursor: pointer;
    transition: color 0.2s;
}

.modal-close:hover {
    color: var(--text-light);
}

.modal-content form {
    padding: 24px;
}

.modal-actions {
    display: flex;
    gap: 12px;
    margin-top: 24px;
}

/* Responsive */
@media (max-width: 768px) {
    .sidebar {
        width: 200px;
    }

    .main-content {
        margin-left: 200px;
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }

    .form-row {
        grid-template-columns: 1fr;
    }
}