:root {
    --bg-primary: #0d1117;
    --bg-secondary: #161b22;
    --bg-tertiary: #21262d;
    --border: #30363d;
    --text-primary: #f0f6fc;
    --text-secondary: #8b949e;
    --accent: #58a6ff;
    --accent-hover: #79c0ff;
    --success: #3fb950;
    --warning: #d29922;
    --danger: #f85149;
}

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

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

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

/* Sidebar */
.sidebar {
    width: 260px;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border);
    padding: 1.5rem 0;
    flex-shrink: 0;
}

.sidebar-header {
    padding: 0 1.5rem 1.5rem;
    border-bottom: 1px solid var(--border);
}

.sidebar-header h2 {
    color: var(--accent);
    font-size: 1.25rem;
    font-weight: 600;
}

.sidebar-header .subtitle {
    color: var(--text-secondary);
    font-size: 0.8rem;
}

.nav-list {
    list-style: none;
    padding: 1rem 0;
}

.nav-list li a {
    display: block;
    padding: 0.6rem 1.5rem;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.2s;
    border-left: 3px solid transparent;
}

.nav-list li a:hover,
.nav-list li a.active {
    color: var(--text-primary);
    background: var(--bg-tertiary);
    border-left-color: var(--accent);
}

/* Main content */
.main-content {
    flex: 1;
    padding: 2rem;
    overflow-x: auto;
}

.page-body {
    max-width: 1200px;
}

h1, h2 {
    margin-bottom: 1.5rem;
    font-weight: 600;
}

h1 { font-size: 1.75rem; }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.25rem; margin-bottom: 1rem; }

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

.stat-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent);
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-top: 0.25rem;
}

/* Toolbar */
.toolbar {
    display: flex;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

/* Buttons */
.btn {
    padding: 0.5rem 1rem;
    border: 1px solid var(--border);
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.875rem;
    transition: all 0.2s;
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

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

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

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

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

.btn-sm {
    padding: 0.25rem 0.5rem;
    font-size: 0.8rem;
}

/* Tables */
.data-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 8px;
    overflow: hidden;
}

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

.data-table th {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

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

/* Badges */
.badge {
    display: inline-block;
    padding: 0.2rem 0.6rem;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    border: 1px solid var(--border);
}

.badge-pending { color: var(--text-secondary); }
.badge-analyzing { color: var(--warning); border-color: var(--warning); }
.badge-analyzed { color: var(--accent); border-color: var(--accent); }
.badge-generating { color: var(--warning); border-color: var(--warning); }
.badge-ready { color: var(--success); border-color: var(--success); }
.badge-failed { color: var(--danger); border-color: var(--danger); }

/* Forms */
.form-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

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

.form-group label {
    display: block;
    color: var(--text-secondary);
    font-size: 0.85rem;
    margin-bottom: 0.25rem;
}

.form-input {
    width: 100%;
    padding: 0.5rem 0.75rem;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 0.9rem;
}

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

.form-actions {
    display: flex;
    gap: 0.5rem;
    margin-top: 1rem;
}

code {
    font-family: 'Cascadia Code', 'Fira Code', monospace;
    font-size: 0.85em;
    background: var(--bg-tertiary);
    padding: 0.15rem 0.4rem;
    border-radius: 4px;
}