:root {
    --primary-color: #2a84ff;
    --secondary-color: #4caf50;
    --danger-color: #f44336;
    --warning-color: #ff9800;
    --dark-bg: #111;
    --darker-bg: #0a0a0a;
    --light-bg: #222;
    --lighter-bg: #333;
    --border-color: #444;
    --text-color: #eee;
    --text-muted: #999;
    --shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--dark-bg);
    color: var(--text-color);
    line-height: 1.6;
}

/* Login Page */
.login-page {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: linear-gradient(135deg, var(--darker-bg), var(--dark-bg));
}

.login-container {
    width: 100%;
    max-width: 400px;
    padding: 2rem;
    background-color: var(--light-bg);
    border-radius: 8px;
    box-shadow: var(--shadow);
}

.login-header {
    text-align: center;
    margin-bottom: 2rem;
}

.login-header h1 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.login-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

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

.sidebar {
    width: 250px;
    background-color: var(--darker-bg);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
}

.sidebar-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.sidebar-header h2 {
    color: var(--primary-color);
    margin-bottom: 0.25rem;
}

.sidebar-header p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

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

.sidebar-nav ul {
    list-style: none;
}

.sidebar-nav a {
    display: flex;
    align-items: center;
    padding: 0.75rem 1.5rem;
    color: var(--text-color);
    text-decoration: none;
    transition: all 0.2s;
}

.sidebar-nav a:hover {
    background-color: var(--light-bg);
}

.sidebar-nav a.active {
    background-color: var(--primary-color);
    color: white;
}

.sidebar-nav .icon {
    margin-right: 0.75rem;
    font-size: 1.2rem;
}

.sidebar-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--border-color);
}

.btn-logout {
    display: flex;
    align-items: center;
    color: var(--text-muted);
    text-decoration: none;
    padding: 0.5rem;
    border-radius: 4px;
    transition: all 0.2s;
}

.btn-logout:hover {
    background-color: var(--light-bg);
    color: var(--text-color);
}

.main-content {
    flex: 1;
    margin-left: 250px;
    padding: 1.5rem;
}

.content-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.content-section {
    display: none;
}

.content-section.active {
    display: block;
}

/* Dashboard Components */
.stats-overview {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background-color: var(--light-bg);
    border-radius: 8px;
    padding: 1.5rem;
    display: flex;
    align-items: center;
    box-shadow: var(--shadow);
}

.stat-icon {
    font-size: 2.5rem;
    margin-right: 1rem;
    color: var(--primary-color);
}

.stat-value {
    font-size: 1.8rem;
    font-weight: bold;
    margin-bottom: 0.25rem;
}

.stat-label {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.chart-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(400px, 1fr));
    gap: 1.5rem;
}

.chart-card {
    background-color: var(--light-bg);
    border-radius: 8px;
    padding: 1.5rem;
    box-shadow: var(--shadow);
}

.chart-card h3 {
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border-color);
}

.chart-container {
    height: 300px;
}

/* Forms and Controls */
.form-control {
    background-color: var(--lighter-bg);
    border: 1px solid var(--border-color);
    color: var(--text-color);
    padding: 0.5rem 0.75rem;
    border-radius: 4px;
    font-size: 1rem;
    width: 100%;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
}

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
}

.btn {
    padding: 0.5rem 1rem;
    border-radius: 4px;
    border: none;
    cursor: pointer;
    font-size: 1rem;
    transition: all 0.2s;
}

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

.btn-primary:hover {
    background-color: #1a74ef;
}

.btn-secondary {
    background-color: var(--lighter-bg);
    color: var(--text-color);
}

.btn-secondary:hover {
    background-color: #444;
}

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

.btn-danger:hover {
    background-color: #d32f2f;
}

.btn-block {
    display: block;
    width: 100%;
}

.btn-small {
    padding: 0.25rem 0.5rem;
    font-size: 0.85rem;
}

/* Alerts */
.alert {
    padding: 0.75rem 1rem;
    border-radius: 4px;
    margin-bottom: 1rem;
}

.alert-danger {
    background-color: rgba(244, 67, 54, 0.2);
    border: 1px solid var(--danger-color);
    color: #ffcdd2;
}

.alert-warning {
    background-color: rgba(255, 152, 0, 0.2);
    border: 1px solid var(--warning-color);
    color: #ffe0b2;
}

/* Section Specific Styles */
.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.filter-form {
    display: flex;
    gap: 0.75rem;
    align-items: center;
    flex-wrap: wrap;
    width: 100%;
    justify-content: space-between;
}

.filter-group, .button-group {
    display: flex;
    gap: 0.75rem;
    align-items: center;
    flex-wrap: wrap;
}

@media (max-width: 992px) {
    .filter-form {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .filter-group, .button-group {
        width: 100%;
        margin-bottom: 0.5rem;
    }
}

.log-filter-controls {
    display: flex;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.active-filters {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.filter-tag {
    background-color: var(--primary-color);
    color: white;
    padding: 0.25rem 0.5rem;
    border-radius: 1rem;
    font-size: 0.85rem;
    display: flex;
    align-items: center;
}

.filter-tag .remove {
    margin-left: 0.5rem;
    cursor: pointer;
}

.log-container {
    background-color: var(--light-bg);
    border-radius: 8px;
    padding: 1rem;
    height: 60vh;
    overflow: auto;
    box-shadow: var(--shadow);
    position: relative;
}

.log-content {
    font-family: monospace;
    font-size: 0.9rem;
    line-height: 1.4;
    width: 100%;
}

/* Log Table Styles */
.log-table {
    width: 100%;
    border-collapse: collapse;
    table-layout: fixed;
}

.log-line {
    padding: 0.25rem 0;
    border-bottom: 1px solid var(--border-color);
}

.log-line td {
    padding: 0.5rem;
    word-break: break-word;
    white-space: normal;
}

.log-line:hover {
    background-color: var(--lighter-bg);
}

.log-line.highlight {
    background-color: rgba(42, 132, 255, 0.2);
}

.log-category {
    font-weight: bold;
    color: var(--secondary-color);
}

.log-timestamp {
    color: var(--text-muted);
}

.log-error {
    color: var(--danger-color);
}

.log-warning {
    color: var(--warning-color);
}

/* Data Tables */
.data-table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 1.5rem;
    table-layout: fixed;
}

.data-table th,
.data-table td {
    padding: 0.75rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
    word-break: break-word;
}

.data-table th {
    background-color: var(--lighter-bg);
    font-weight: 600;
}

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

/* Column widths for data table */
.data-table th:nth-child(1), .data-table td:nth-child(1) { width: 5%; }  /* ID */
.data-table th:nth-child(2), .data-table td:nth-child(2) { width: 25%; } /* Plattform */
.data-table th:nth-child(3), .data-table td:nth-child(3) { width: 15%; } /* Abo */
.data-table th:nth-child(4), .data-table td:nth-child(4) { width: 25%; } /* Letzte Nutzung */
.data-table th:nth-child(5), .data-table td:nth-child(5) { width: 30%; } /* Aktionen */

/* Abo-Status-Dropdown */
.abo-status-select {
    background-color: var(--lighter-bg);
    border: 1px solid var(--border-color);
    color: var(--text-color);
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.9rem;
    cursor: pointer;
    width: 100%;
}

.abo-status-select option {
    background-color: var(--light-bg);
    color: var(--text-color);
}

/* Benachrichtigungen */
.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: 12px 20px;
    border-radius: 4px;
    color: white;
    font-weight: 500;
    z-index: 9999;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.3);
    display: none;
}

.notification.success {
    background-color: var(--secondary-color);
}

.notification.error {
    background-color: var(--danger-color);
}

/* Messages */
.user-stats-card {
    background-color: var(--light-bg);
    border-radius: 8px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow);
}

.stats-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: 0.75rem;
}

.badge {
    padding: 0.25rem 0.75rem;
    border-radius: 1rem;
    background-color: var(--lighter-bg);
    font-size: 0.85rem;
}

.badge.success {
    background-color: rgba(76, 175, 80, 0.2);
    color: #a5d6a7;
}

.badge.error {
    background-color: rgba(244, 67, 54, 0.2);
    color: #ffcdd2;
}

.badge.warning {
    background-color: rgba(255, 152, 0, 0.2);
    color: #ffe0b2;
}

.messages-container {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.message-container {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.message {
    padding: 1rem;
    border-radius: 8px;
    max-width: 80%;
}

.message.user {
    background-color: var(--lighter-bg);
    align-self: flex-start;
}

.message.system {
    background-color: var(--primary-color);
    align-self: flex-end;
}

.message.error {
    background-color: var(--danger-color);
}

.message.pending {
    background-color: var(--lighter-bg);
    color: var(--text-muted);
    align-self: flex-end;
}

.message-header {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.error-message {
    margin-top: 0.75rem;
    padding: 0.5rem;
    background-color: rgba(0, 0, 0, 0.2);
    border-radius: 4px;
    font-size: 0.85rem;
    color: #ffcdd2;
}

/* System Section */
.system-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 1.5rem;
}

.system-card {
    background-color: var(--light-bg);
    border-radius: 8px;
    padding: 1.5rem;
    box-shadow: var(--shadow);
}

.system-card h3 {
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border-color);
}

.card-actions {
    display: flex;
    gap: 0.75rem;
    margin-top: 1.5rem;
}

.stats-table {
    width: 100%;
}

.stats-table td {
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--border-color);
}

.stats-table td:first-child {
    color: var(--text-muted);
}

/* Empty State */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 3rem;
    background-color: var(--light-bg);
    border-radius: 8px;
    text-align: center;
    color: var(--text-muted);
}

/* Utilities */
.hidden {
    display: none !important;
}

/* Responsive */
@media (max-width: 768px) {
    .sidebar {
        width: 70px;
        overflow: hidden;
    }
    
    .sidebar-header h2,
    .sidebar-header p,
    .sidebar-nav a span {
        display: none;
    }
    
    .sidebar-nav .icon {
        margin-right: 0;
        font-size: 1.5rem;
    }
    
    .sidebar-nav a {
        justify-content: center;
        padding: 1rem;
    }
    
    .main-content {
        margin-left: 70px;
    }
    
    .chart-grid,
    .system-grid {
        grid-template-columns: 1fr;
    }
}