:root {
    --bg: #0f1419;
    --bg-card: #1a2332;
    --bg-sidebar: #131a24;
    --border: #2a3544;
    --text: #e7ecf3;
    --text-muted: #8b9cb3;
    --accent: #3b82f6;
    --accent-hover: #2563eb;
    --success: #22c55e;
    --warning: #f59e0b;
    --danger: #ef4444;
    --running: #22c55e;
    --exited: #6b7280;
    --paused: #f59e0b;
    --radius: 8px;
    --font: 'Segoe UI', system-ui, -apple-system, sans-serif;
    --mono: 'JetBrains Mono', 'Fira Code', monospace;
}

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

body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    line-height: 1.5;
    min-height: 100vh;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

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

.sidebar {
    width: 220px;
    background: var(--bg-sidebar);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    padding: 1.5rem 0;
    flex-shrink: 0;
}

.brand {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0 1.25rem 1.5rem;
    border-bottom: 1px solid var(--border);
    margin-bottom: 1rem;
}

.brand-icon { font-size: 1.5rem; color: var(--accent); }
.brand-name { font-weight: 700; font-size: 1.1rem; }

.sidebar nav { display: flex; flex-direction: column; gap: 0.25rem; padding: 0 0.75rem; flex: 1; }
.sidebar nav a {
    padding: 0.6rem 0.75rem;
    border-radius: var(--radius);
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.9rem;
    transition: background 0.15s, color 0.15s;
}
.sidebar nav a:hover { background: var(--bg-card); color: var(--text); text-decoration: none; }
.sidebar nav a.active { background: var(--accent); color: #fff; }

.sidebar-footer { padding: 1rem 1.25rem; border-top: 1px solid var(--border); }
.api-link { font-size: 0.8rem; color: var(--text-muted); }

.content {
    flex: 1;
    padding: 2rem;
    overflow-x: auto;
    max-width: 1400px;
}

.page-header { margin-bottom: 1.5rem; position: relative; }
.page-header h1 { font-size: 1.75rem; font-weight: 700; }
.page-header .page-actions { margin-top: 0.75rem; }
.subtitle { color: var(--text-muted); margin-top: 0.25rem; }

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.25rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.stat-label { font-size: 0.85rem; color: var(--text-muted); }
.stat-value { font-size: 1.75rem; font-weight: 700; }
.stat-running { color: var(--running); }
.stat-stopped { color: var(--exited); }

.grid-2 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.25rem;
    margin-bottom: 1rem;
}

.card h2 { font-size: 1rem; margin-bottom: 1rem; color: var(--text-muted); font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; font-size: 0.75rem; }
.card-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 1rem; }
.card-header h2 { margin-bottom: 0; }
.card-error { border-color: var(--danger); }

.detail-list { display: grid; grid-template-columns: 140px 1fr; gap: 0.5rem 1rem; }
.detail-list dt { color: var(--text-muted); font-size: 0.85rem; }
.detail-list dd { font-size: 0.9rem; word-break: break-all; }

table { width: 100%; border-collapse: collapse; font-size: 0.875rem; }
thead th {
    text-align: left;
    padding: 0.75rem;
    color: var(--text-muted);
    font-weight: 600;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-bottom: 1px solid var(--border);
}
tbody td { padding: 0.75rem; border-bottom: 1px solid var(--border); vertical-align: middle; }
tbody tr:last-child td { border-bottom: none; }
tbody tr:hover { background: rgba(255,255,255,0.02); }

.mono { font-family: var(--mono); font-size: 0.8rem; }

.badge {
    display: inline-block;
    padding: 0.15rem 0.5rem;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: lowercase;
}
.badge-running { background: rgba(34,197,94,0.15); color: var(--running); }
.badge-exited, .badge-dead, .badge-created { background: rgba(107,114,128,0.15); color: var(--exited); }
.badge-paused { background: rgba(245,158,11,0.15); color: var(--paused); }
.badge-restarting { background: rgba(59,130,246,0.15); color: var(--accent); }

.btn {
    display: inline-block;
    padding: 0.45rem 0.9rem;
    background: var(--accent);
    color: #fff;
    border: none;
    border-radius: var(--radius);
    font-size: 0.85rem;
    cursor: pointer;
    text-decoration: none;
    font-family: inherit;
    transition: background 0.15s;
}
.btn:hover { background: var(--accent-hover); text-decoration: none; color: #fff; }
.btn-sm { padding: 0.25rem 0.6rem; font-size: 0.75rem; }
.btn-success { background: var(--success); }
.btn-success:hover { background: #16a34a; }
.btn-warning { background: var(--warning); color: #000; }
.btn-warning:hover { background: #d97706; color: #000; }
.btn-danger { background: var(--danger); }
.btn-danger:hover { background: #dc2626; }
.btn-ghost { background: transparent; border: 1px solid var(--border); color: var(--text); }
.btn-ghost:hover { background: var(--bg-card); color: var(--text); }

.actions { display: flex; flex-wrap: wrap; gap: 0.35rem; }
.actions-bar { display: flex; gap: 0.5rem; margin-bottom: 1.5rem; flex-wrap: wrap; }
.inline { display: inline; }

.flash {
    padding: 0.75rem 1rem;
    border-radius: var(--radius);
    margin-bottom: 1rem;
    font-size: 0.9rem;
}
.flash-success { background: rgba(34,197,94,0.15); border: 1px solid var(--success); color: var(--running); }
.flash-error { background: rgba(239,68,68,0.15); border: 1px solid var(--danger); color: #fca5a5; }

.empty { color: var(--text-muted); padding: 1rem 0; }
.text-muted { color: var(--text-muted); font-size: 0.85rem; }

.logs, .json {
    background: #0a0e14;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1rem;
    font-family: var(--mono);
    font-size: 0.8rem;
    overflow-x: auto;
    max-height: 500px;
    overflow-y: auto;
    white-space: pre-wrap;
    word-break: break-all;
    line-height: 1.6;
}

@media (max-width: 768px) {
    .app { flex-direction: column; }
    .sidebar { width: 100%; flex-direction: row; flex-wrap: wrap; padding: 1rem; }
    .sidebar nav { flex-direction: row; flex-wrap: wrap; }
    .brand { border-bottom: none; margin-bottom: 0; padding-bottom: 0; }
    .sidebar-footer { display: none; }
    .content { padding: 1rem; }
}

.form { max-width: 720px; }
.form-group { margin-bottom: 1rem; }
.form-group label { display: block; margin-bottom: 0.35rem; color: var(--text-muted); font-size: 0.85rem; }
.form-group input[type="text"],
.form-group input[type="password"],
.form-group input[type="email"],
.form-group input[type="url"],
.form-group input[type="number"],
.form-group select,
.form-group textarea {
    width: 100%;
    min-height: 2.5rem;
    padding: 0.6rem 0.75rem;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text);
    font-family: inherit;
    font-size: 0.9rem;
    line-height: 1.4;
}
.form-group input[type="password"],
.form-group input[type="number"] {
    color-scheme: dark;
}
.form-group textarea.mono { font-family: var(--mono); font-size: 0.8rem; }
.form-group input[type="text"]:focus,
.form-group input[type="password"]:focus,
.form-group input[type="email"]:focus,
.form-group input[type="url"]:focus,
.form-group input[type="number"]:focus,
.form-group select:focus,
.form-group textarea:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.25); }
.form-check label { display: flex; align-items: center; gap: 0.5rem; color: var(--text); cursor: pointer; }
.form-check input { width: auto; }
.form-actions { display: flex; gap: 0.5rem; margin-top: 1.25rem; flex-wrap: wrap; }

.login-page { display: flex; align-items: center; justify-content: center; min-height: 100vh; }
.login-box { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 2rem; width: 100%; max-width: 380px; }
.login-box .brand { padding: 0 0 1.25rem; margin-bottom: 1.25rem; }
.login-box .form { max-width: none; }
.login-box h1 { font-size: 1.25rem; margin-bottom: 1rem; }
.login-hint { margin-top: 1rem; font-size: 0.8rem; color: var(--text-muted); }
.login-hint code { background: var(--bg); padding: 0.1rem 0.35rem; border-radius: 4px; font-size: 0.85em; }

.node-selector { padding: 0 1rem 1rem; border-bottom: 1px solid var(--border); margin-bottom: 0.75rem; }
.node-selector label { display: block; font-size: 0.7rem; color: var(--text-muted); margin-bottom: 0.35rem; text-transform: uppercase; }
.node-selector select { width: 100%; padding: 0.4rem; background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius); color: var(--text); font-size: 0.85rem; }
.node-badge { display: block; font-size: 0.75rem; color: var(--accent); margin-bottom: 0.5rem; }

.card-link { display: block; text-decoration: none; color: inherit; transition: border-color 0.15s; }
.card-link:hover { border-color: var(--accent); text-decoration: none; }
.card-link p { color: var(--text-muted); font-size: 0.9rem; margin-top: 0.5rem; }
.doc-small { font-size: 0.75rem; word-break: break-all; }
.doc-list { list-style: none; padding: 0; }
.doc-list li { padding: 0.35rem 0; color: var(--text-muted); }
.doc-list li .badge { margin-right: 0.5rem; }

.doc-steps {
    list-style: none;
    padding: 0;
    margin: 1rem 0 0;
    counter-reset: doc-step;
}

.doc-steps li {
    position: relative;
    padding: 0.65rem 0 0.65rem 2.5rem;
    color: var(--text-muted);
    border-bottom: 1px solid rgba(42, 53, 68, 0.5);
}

.doc-steps li:last-child {
    border-bottom: none;
}

.doc-steps li::before {
    counter-increment: doc-step;
    content: counter(doc-step);
    position: absolute;
    left: 0;
    top: 0.55rem;
    width: 1.6rem;
    height: 1.6rem;
    border-radius: 50%;
    background: rgba(59, 130, 246, 0.15);
    color: var(--accent);
    font-size: 0.8rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
}

.doc-steps li strong {
    color: var(--text);
}

.doc-base { background: var(--bg); padding: 0.75rem; border-radius: var(--radius); border: 1px solid var(--border); }
.doc-table { margin-top: 1rem; }
.doc-table .method { display: inline-block; padding: 0.15rem 0.45rem; border-radius: 4px; font-size: 0.7rem; font-weight: 700; font-family: var(--mono); }
.method-get { background: rgba(59,130,246,0.2); color: #93c5fd; }
.method-post { background: rgba(34,197,94,0.2); color: #86efac; }
.method-put { background: rgba(245,158,11,0.2); color: #fcd34d; }
.method-delete { background: rgba(239,68,68,0.2); color: #fca5a5; }
.doc-section h2 { font-size: 1rem; text-transform: none; letter-spacing: normal; color: var(--text); }
.hint, small.hint { display: block; color: var(--text-muted); font-size: 0.8rem; margin-top: 0.35rem; }
.copy-feedback { margin-left: 0.5rem; color: var(--success); font-size: 0.85rem; }
.node-banner {
    background: rgba(59, 130, 246, 0.12);
    border: 1px solid var(--accent);
    border-radius: var(--radius);
    padding: 0.6rem 1rem;
    margin-bottom: 1rem;
    font-size: 0.9rem;
}

body.is-loading {
    overflow: hidden;
}

.loading-overlay {
    position: fixed;
    inset: 0;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s ease, visibility 0.2s ease;
}

.loading-overlay.is-visible {
    opacity: 1;
    visibility: visible;
}

.loading-overlay__backdrop {
    position: absolute;
    inset: 0;
    background: rgba(8, 12, 18, 0.55);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.loading-overlay__panel {
    position: relative;
    z-index: 1;
    width: min(100%, 420px);
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: calc(var(--radius) + 4px);
    padding: 2rem 1.75rem;
    text-align: center;
    box-shadow: 0 24px 48px rgba(0, 0, 0, 0.45);
    animation: loading-panel-in 0.25s ease;
}

.loading-overlay__message {
    font-size: 1.05rem;
    font-weight: 600;
    margin-top: 1.25rem;
}

.loading-overlay__hint {
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-top: 0.5rem;
}

.loading-spinner {
    width: 3rem;
    height: 3rem;
    margin: 0 auto;
    border: 3px solid rgba(59, 130, 246, 0.2);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: loading-spin 0.8s linear infinite;
}

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

@keyframes loading-panel-in {
    from {
        opacity: 0;
        transform: translateY(12px) scale(0.98);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.version-player {
    display: grid;
    grid-template-columns: minmax(200px, 260px) 1fr;
    gap: 1rem;
    min-height: 420px;
}

.version-player__nav {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.version-player__tab {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.15rem;
    width: 100%;
    padding: 0.85rem 1rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text-muted);
    cursor: pointer;
    font-family: inherit;
    text-align: left;
    transition: border-color 0.15s, background 0.15s, color 0.15s;
}

.version-player__tab:hover {
    border-color: var(--accent);
    color: var(--text);
}

.version-player__tab.is-active {
    background: rgba(59, 130, 246, 0.12);
    border-color: var(--accent);
    color: var(--text);
}

.version-player__number {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--accent);
}

.version-player__tab.is-active .version-player__number {
    color: #93c5fd;
}

.version-player__date {
    font-size: 0.8rem;
}

.version-player__stage {
    position: relative;
    min-height: 320px;
}

.version-player__panel {
    display: none;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.5rem;
    animation: loading-panel-in 0.2s ease;
}

.version-player__panel.is-active {
    display: block;
}

.version-player__header {
    margin-bottom: 1.25rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border);
}

.version-player__header h2 {
    font-size: 1.35rem;
    font-weight: 700;
}

.changelog-md h3 {
    font-size: 0.95rem;
    color: var(--text);
    margin: 1.25rem 0 0.65rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    font-weight: 600;
}

.changelog-md h4 {
    font-size: 0.9rem;
    margin: 1rem 0 0.5rem;
}

.changelog-md p {
    color: var(--text-muted);
    margin-bottom: 0.75rem;
    line-height: 1.65;
}

.changelog-md .changelog-list {
    list-style: none;
    padding: 0;
    margin: 0 0 1rem;
}

.changelog-md .changelog-list li {
    position: relative;
    padding: 0.45rem 0 0.45rem 1.25rem;
    color: var(--text-muted);
    border-bottom: 1px solid rgba(42, 53, 68, 0.5);
}

.changelog-md .changelog-list li:last-child {
    border-bottom: none;
}

.changelog-md .changelog-list li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--accent);
}

.changelog-md code {
    background: var(--bg);
    padding: 0.1rem 0.35rem;
    border-radius: 4px;
    font-family: var(--mono);
    font-size: 0.85em;
}

.changelog-md pre {
    margin: 0.75rem 0 1rem;
}

@media (max-width: 768px) {
    .version-player {
        grid-template-columns: 1fr;
    }

    .version-player__nav {
        flex-direction: row;
        overflow-x: auto;
        padding-bottom: 0.25rem;
    }

    .version-player__tab {
        min-width: 120px;
        flex-shrink: 0;
    }
}