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

:root {
    --bg-primary: #0a0a0a;
    --bg-secondary: #1a1a1a;
    --bg-tertiary: #2a2a2a;
    --text-primary: #ffffff;
    --text-secondary: #b0b0b0;
    --text-tertiary: #808080;
    --accent-blue: #3b82f6;
    --accent-light-blue: #60a5fa;
    --border-color: #333333;
    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
}

.container {
    display: flex;
    min-height: 100vh;
}

.sidebar {
    width: 250px;
    background-color: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    padding: 20px;
    position: fixed;
    height: 100vh;
    overflow-y: auto;
}

.sidebar-header {
    font-size: 20px;
    font-weight: bold;
    margin-bottom: 30px;
    color: var(--accent-blue);
}

.nav-menu {
    list-style: none;
}

.nav-item {
    margin-bottom: 5px;
}

.nav-link {
    display: block;
    padding: 12px 15px;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: 6px;
    transition: all 0.2s;
}

.nav-link:hover {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
}

.nav-link.active {
    background-color: var(--accent-blue);
    color: var(--text-primary);
}

.main-content {
    margin-left: 250px;
    flex: 1;
    padding: 40px;
}

.page-header {
    margin-bottom: 30px;
}

.page-title {
    font-size: 32px;
    font-weight: 600;
    margin-bottom: 10px;
}

.page-subtitle {
    color: var(--text-secondary);
    font-size: 14px;
}

.btn {
    padding: 10px 20px;
    border: none;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

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

.btn-primary:hover {
    background-color: var(--accent-light-blue);
}

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

.btn-secondary:hover {
    background-color: var(--border-color);
}

.card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 20px;
}

.table {
    width: 100%;
    border-collapse: collapse;
    background-color: var(--bg-secondary);
    border-radius: 8px;
    overflow: hidden;
}

.table thead {
    background-color: var(--bg-tertiary);
}

.table th,
.table td {
    padding: 15px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.table th {
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    font-size: 12px;
}

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

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

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

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 10px 15px;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 14px;
}

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

.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    z-index: 1000;
}

.modal.show {
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background-color: var(--bg-secondary);
    border-radius: 12px;
    padding: 30px;
    max-width: 600px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-header {
    margin-bottom: 25px;
}

.modal-title {
    font-size: 24px;
    font-weight: 600;
}

.badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 500;
}

.badge-success {
    background-color: rgba(16, 185, 129, 0.2);
    color: var(--success);
}

.badge-warning {
    background-color: rgba(245, 158, 11, 0.2);
    color: var(--warning);
}

.badge-error {
    background-color: rgba(239, 68, 68, 0.2);
    color: var(--error);
}

.badge-info {
    background-color: rgba(59, 130, 246, 0.2);
    color: var(--accent-blue);
}