:root {
    /* Light Theme Palette */
    --bg-page: #f8fafc;
    --bg-card: #ffffff;
    --bg-secondary: #f0f4f8;
    --text-primary: #0c4a6e;
    --text-secondary: #64748b;
    --text-muted: #94a3b8;
    --border-primary: #e2e8f0;
    --border-thin: #f1f5f9;

    /* Accents & Status */
    --accent: #0ea5e9;
    --accent-hover: #0284c7;
    --accent-bg: #e0f2fe;
    --accent-text: #0369a1;
    --accent-muted: #7dd3fc;

    --success: #22c55e;
    --success-bg: #f0fdf4;
    --success-text: #166534;

    --warning: #f59e0b;
    --warning-bg: #fffbeb;
    --warning-text: #92400e;

    --error: #ef4444;
    --error-bg: #fef2f2;
    --error-text: #991b1b;
}

.dark {
    /* Dark Theme Palette */
    --bg-page: #0f172a;
    --bg-card: #1e293b;
    --bg-secondary: #334155;
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    --border-primary: #475569;
    --border-thin: #334155;

    /* Accents & Status in Dark */
    --accent-bg: #0c4a6e;
    --accent-text: #7dd3fc;
    --accent-muted: #0369a1;

    --success-bg: #064e3b;
    --success-text: #a7f3d0;

    --warning-bg: #78350f;
    --warning-text: #fde68a;

    --error-bg: #7f1d1d;
    --error-text: #fecaca;
}

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

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    font-size: 14px;
    font-weight: 400;
    line-height: 1.6;
    background-color: var(--bg-page);
    color: var(--text-primary);
    transition: background-color 0.2s ease, color 0.1s ease;
}

/* Typography */
h1 {
    font-size: 22px;
    font-weight: 600;
    color: var(--text-primary);
}

h2 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
}

h3 {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
}

.text-minor {
    font-size: 12px;
    color: var(--text-secondary);
}

.table-header {
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    color: var(--text-secondary);
}

/* Layout Components */
.topbar {
    height: 56px;
    background-color: var(--bg-card);
    border-bottom: 1px solid var(--border-thin);
    display: flex;
    align-items: center;
    padding: 0 16px;
    position: sticky;
    top: 0;
    z-index: 50;
    transition: background-color 0.2s ease;
}

.nav-link {
    font-size: 13px;
    color: var(--text-secondary);
    font-weight: 400;
    transition: color 0.2s ease;
    text-decoration: none;
}

.nav-link:hover, .nav-link.active {
    color: var(--accent);
}

.nav-link.active {
    font-weight: 500;
}

.avatar {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background-color: var(--accent-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    font-weight: 500;
    color: var(--accent-text);
}

/* Cards */
.card-stat {
    background-color: var(--bg-card);
    border: 1px solid var(--border-primary);
    border-radius: 10px;
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 4px;
    transition: background-color 0.2s ease, border-color 0.2s ease;
}

.stat-label {
    font-size: 11px;
    font-weight: 500;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 8px;
}

.stat-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
}

.stat-value {
    font-size: 22px;
    font-weight: 600;
    color: var(--text-primary);
}

.card-test {
    background-color: var(--bg-card);
    border: 1px solid var(--border-primary);
    border-radius: 10px;
    position: relative;
    overflow: hidden;
    padding-top: 2px; /* For the accent line */
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.card-test::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background-color: var(--border-primary);
}

.card-test.status-new::before { background-color: var(--accent); }
.card-test.status-passed::before { background-color: var(--success); }
.card-test.status-locked::before { background-color: var(--border-primary); }

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    border: none;
    height: 36px;
    padding: 0 18px;
}

.btn-primary {
    background-color: var(--accent);
    color: #ffffff;
}

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

.btn-outline {
    background-color: transparent;
    border: 1px solid var(--border-primary);
    color: var(--text-secondary);
}

.btn-outline:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.btn-exit {
    color: #64748b;
    background: transparent;
}

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

.btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

/* Badges */
.badge {
    border-radius: 20px;
    padding: 3px 10px;
    font-size: 11px;
    font-weight: 500;
    display: inline-flex;
}

.badge-success { background-color: var(--success-bg); color: var(--success-text); }
.badge-warning { background-color: var(--warning-bg); color: var(--warning-text); }
.badge-error { background-color: var(--error-bg); color: var(--error-text); }
.badge-info { background-color: var(--accent-bg); color: var(--accent-text); }

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

.data-table tr {
    border-bottom: 1px solid var(--border-thin);
}

.data-table tr:last-child {
    border-bottom: none;
}

.data-table tbody tr:nth-child(even) {
    background-color: var(--bg-page);
}

.data-table td, .data-table th {
    padding: 12px 16px;
    text-align: left;
}

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

/* Progress */
.progress-container {
    height: 4px;
    border-radius: 2px;
    background-color: var(--border-primary);
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    background-color: var(--accent);
    transition: width 0.3s ease;
}

.progress-bar.success {
    background-color: var(--success);
}