:root {
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --success: #16a34a;
    --warning: #d97706;
    --danger: #dc2626;
    --info: #0891b2;
    --bg: #f8fafc;
    --surface: #ffffff;
    --border: #e2e8f0;
    --text: #1e293b;
    --text-muted: #64748b;
    --radius: 6px;
}

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

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

/* Navbar */
.navbar {
    background: var(--text);
    color: white;
    padding: 0 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 56px;
}

.nav-brand {
    font-weight: 700;
    font-size: 1.1rem;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.nav-links a {
    color: #94a3b8;
    text-decoration: none;
    font-size: 0.9rem;
}

.nav-links a:hover { color: white; }

.nav-logout { display: inline; }

.btn-link {
    background: none;
    border: none;
    color: #94a3b8;
    cursor: pointer;
    font-size: 0.9rem;
}

.btn-link:hover { color: white; }

/* Container */
.container {
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 2rem;
}

/* Alerts */
.alert {
    padding: 0.75rem 1rem;
    border-radius: var(--radius);
    margin-bottom: 1rem;
    font-size: 0.9rem;
}

.alert-error { background: #fef2f2; color: var(--danger); border: 1px solid #fecaca; }
.alert-success { background: #f0fdf4; color: var(--success); border: 1px solid #bbf7d0; }
.alert-warning { background: #fffbeb; color: var(--warning); border: 1px solid #fde68a; }

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.5rem 1rem;
    border-radius: var(--radius);
    border: none;
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 500;
    text-decoration: none;
    text-align: center;
    transition: background 0.15s;
}

.btn-primary { background: var(--primary); color: white; }
.btn-primary:hover { background: var(--primary-hover); }
.btn-secondary { background: var(--border); color: var(--text); }
.btn-success { background: var(--success); color: white; }
.btn-warning { background: var(--warning); color: white; }
.btn-danger { background: var(--danger); color: white; }
.btn-info { background: var(--info); color: white; }
.btn-outline { background: transparent; color: var(--primary); border: 1px solid var(--primary); }
.btn-outline:hover { background: var(--primary); color: white; }
.btn-full { width: 100%; }
.btn-sm { padding: 0.3rem 0.6rem; font-size: 0.75rem; border-radius: 4px; }

.btn:hover { opacity: 0.9; }

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn:disabled:hover { opacity: 0.6; }

/* Page header */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.page-header h1 {
    font-size: 1.5rem;
    font-weight: 700;
}

/* Table */
.table-wrapper {
    background: var(--surface);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    overflow-x: auto;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
}

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

.project-table th,
.project-table td {
    padding: 0.75rem 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border);
    font-size: 0.875rem;
    white-space: nowrap;
}

.project-table td a {
    color: var(--primary);
    text-decoration: none;
}

.project-table td a:hover {
    text-decoration: underline;
}

.project-table th {
    background: #f1f5f9;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.05em;
}

.project-table tr:last-child td { border-bottom: none; }
.project-table tr:hover td { background: #f8fafc; }

.project-name { font-weight: 600; color: var(--text); }

.actions {
    display: flex;
    gap: 0.25rem;
    flex-wrap: nowrap;
}

/* Badges */
.badge {
    display: inline-block;
    padding: 0.2rem 0.5rem;
    border-radius: 9999px;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.badge-running { background: #dcfce7; color: #166534; }
.badge-stopped { background: #fee2e2; color: #991b1b; }

/* Login */
.login-wrapper {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: calc(100vh - 4rem);
}

.login-box {
    background: var(--surface);
    padding: 2rem;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    width: 100%;
    max-width: 380px;
}

.login-box h1 {
    font-size: 1.25rem;
    margin-bottom: 0.25rem;
}

.login-subtitle {
    color: var(--text-muted);
    font-size: 0.875rem;
    margin-bottom: 1.5rem;
}

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

.form-group label {
    display: block;
    font-weight: 500;
    margin-bottom: 0.25rem;
    font-size: 0.875rem;
}

.form-group input[type="text"],
.form-group input[type="password"],
.form-group select {
    width: 100%;
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 0.875rem;
    background: var(--surface);
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-help {
    display: block;
    color: var(--text-muted);
    font-size: 0.75rem;
    margin-top: 0.25rem;
}

.required { color: var(--danger); }

.radio-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.radio-label,
.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    cursor: pointer;
}

.name-preview {
    color: var(--primary);
    font-size: 0.8rem;
    margin-top: 0.25rem;
    font-family: monospace;
}

.create-form {
    background: var(--surface);
    padding: 2rem;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    max-width: 600px;
}

.form-actions {
    display: flex;
    gap: 0.75rem;
    justify-content: flex-end;
    margin-top: 1.5rem;
}

/* Empty state */
.empty-state {
    text-align: center;
    padding: 4rem 2rem;
    background: var(--surface);
    border-radius: var(--radius);
    border: 1px solid var(--border);
}

.empty-state h2 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

.empty-state p {
    color: var(--text-muted);
    margin-bottom: 1.5rem;
}

/* Loading overlay */
.loading-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.loading-box {
    background: white;
    padding: 2rem;
    border-radius: var(--radius);
    text-align: center;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin: 0 auto 1rem;
}

@keyframes spin { to { transform: rotate(360deg); } }