:root {
    --bg: #0d1117;
    --surface: #161b22;
    --surface-hover: #1c2129;
    --border: #30363d;
    --border-subtle: #21262d;
    --text: #e6edf3;
    --text-muted: #8b949e;
    --accent: #58a6ff;
    --green: #3fb950;
    --red: #f85149;
    --orange: #d29922;
    --primary-bg: #238636;
    --primary-border: #2ea043;
    --primary-hover: #2ea043;
    --primary-text: #fff;
    --tag-alg-bg: #1f3a5f;
    --tag-alg-text: var(--accent);
    --tag-valid-bg: #1a3a2a;
    --tag-valid-text: var(--green);
    --tag-expired-bg: #3a1a1a;
    --tag-expired-text: var(--red);
    --json-key: #79c0ff;
    --json-string: #a5d6ff;
    --json-number: #79c0ff;
    --json-bool: #ff7b72;
    --json-null: #8b949e;
    --part-header: #ff7b72;
    --part-payload: #d2a8ff;
    --part-signature: #7ee787;
    --font-mono: 'SF Mono', 'Fira Code', 'JetBrains Mono', Consolas, monospace;
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
}

body.theme-light {
    --bg: #ffffff;
    --surface: #f6f8fa;
    --surface-hover: #eef1f4;
    --border: #d0d7de;
    --border-subtle: #e7ebef;
    --text: #1f2328;
    --text-muted: #636c76;
    --accent: #0969da;
    --green: #1a7f37;
    --red: #cf222e;
    --orange: #9a6700;
    --primary-bg: #1f883d;
    --primary-border: #1a7f37;
    --primary-hover: #1a7f37;
    --primary-text: #fff;
    --tag-alg-bg: #ddf4ff;
    --tag-alg-text: #0969da;
    --tag-valid-bg: #dafbe1;
    --tag-valid-text: #1a7f37;
    --tag-expired-bg: #ffebe9;
    --tag-expired-text: #cf222e;
    --json-key: #0550ae;
    --json-string: #0a3069;
    --json-number: #0550ae;
    --json-bool: #cf222e;
    --json-null: #636c76;
    --part-header: #cf222e;
    --part-payload: #8250df;
    --part-signature: #1a7f37;
}

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

body {
    font-family: var(--font-sans);
    background: var(--bg);
    color: var(--text);
    padding: 24px;
    min-height: 100vh;
    transition: background 0.2s, color 0.2s;
}

h1 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 10px;
}

h1 .badge {
    font-size: 11px;
    font-weight: 500;
    padding: 2px 8px;
    border-radius: 12px;
    background: var(--surface);
    border: 1px solid var(--border);
    color: var(--text-muted);
}

.subtitle {
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: 20px;
}

.toolbar {
    display: flex;
    gap: 8px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

button {
    font-family: var(--font-sans);
    font-size: 13px;
    font-weight: 500;
    padding: 6px 14px;
    border-radius: 6px;
    border: 1px solid var(--border);
    background: var(--surface);
    color: var(--text);
    cursor: pointer;
    transition: border-color 0.15s, background 0.15s;
}

button:hover {
    border-color: var(--accent);
    background: var(--surface-hover);
}

button.primary {
    background: var(--primary-bg);
    border-color: var(--primary-border);
    color: var(--primary-text);
}

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

button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.status-bar {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 14px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    margin-bottom: 20px;
    font-size: 13px;
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    flex-shrink: 0;
}

.status-dot.waiting { background: var(--orange); }
.status-dot.success { background: var(--green); }
.status-dot.error { background: var(--red); }

.panels {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
}

@media (min-width: 900px) {
    .panels { grid-template-columns: 1fr 1fr; }
    .panel.full { grid-column: 1 / -1; }
}

.panel {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    overflow: hidden;
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 14px;
    border-bottom: 1px solid var(--border);
    font-size: 13px;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.panel-header .tag {
    font-size: 11px;
    font-weight: 500;
    padding: 1px 6px;
    border-radius: 4px;
    text-transform: none;
    letter-spacing: 0;
}

.tag.alg { background: var(--tag-alg-bg); color: var(--tag-alg-text); }
.tag.valid { background: var(--tag-valid-bg); color: var(--tag-valid-text); }
.tag.expired { background: var(--tag-expired-bg); color: var(--tag-expired-text); }

.panel-body {
    padding: 14px;
}

pre {
    font-family: var(--font-mono);
    font-size: 13px;
    line-height: 1.6;
    white-space: pre-wrap;
    word-break: break-all;
    color: var(--text);
}

.json-key { color: var(--json-key); }
.json-string { color: var(--json-string); }
.json-number { color: var(--json-number); }
.json-bool { color: var(--json-bool); }
.json-null { color: var(--json-null); }

.raw-token {
    font-family: var(--font-mono);
    font-size: 12px;
    line-height: 1.5;
    word-break: break-all;
    color: var(--text-muted);
    max-height: 80px;
    overflow-y: auto;
}

.raw-token .part-header { color: var(--part-header); }
.raw-token .part-payload { color: var(--part-payload); }
.raw-token .part-signature { color: var(--part-signature); }
.raw-token .dot { color: var(--text-muted); }

.claim-row {
    display: flex;
    justify-content: space-between;
    padding: 6px 0;
    border-bottom: 1px solid var(--border-subtle);
    font-size: 13px;
}

.claim-row:last-child { border-bottom: none; }

.claim-label {
    font-family: var(--font-mono);
    color: var(--text-muted);
}

.claim-value {
    font-family: var(--font-mono);
    text-align: right;
    color: var(--text);
}

.claim-value.time { color: var(--orange); }

.empty-state {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-muted);
    font-size: 14px;
}

.log {
    font-family: var(--font-mono);
    font-size: 12px;
    line-height: 1.7;
    max-height: 200px;
    overflow-y: auto;
}

.log-entry { padding: 2px 0; }
.log-time { color: var(--text-muted); }
.log-in { color: var(--green); }
.log-out { color: var(--accent); }
.log-err { color: var(--red); }