:root {
    --bg: #ffffff;
    --bg-soft: #f6f7f9;
    --bg-elevated: #ffffff;
    --fg: #1a1c1f;
    --fg-muted: #62676d;
    --border: #e5e7eb;
    --accent: #2f6df6;
    --accent-soft: rgba(47, 109, 246, 0.1);
    --code-bg: #f2f3f5;
    --tk-key: #0b66c3;
    --tk-type: #8250df;
    --tk-string: #0a7d33;
    --tk-comment: #6b7280;
    --tk-punct: #57606a;
    --tk-num: #b76b01;
    --radius: 12px;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.04), 0 8px 24px rgba(0, 0, 0, 0.05);
    --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
    --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: #0f1114;
        --bg-soft: #16181c;
        --bg-elevated: #1a1d21;
        --fg: #e8eaed;
        --fg-muted: #9aa0a6;
        --border: #2a2e34;
        --accent: #5b8dff;
        --accent-soft: rgba(91, 141, 255, 0.14);
        --code-bg: #16181c;
        --tk-key: #61afef;
        --tk-type: #c678dd;
        --tk-string: #98c379;
        --tk-comment: #7f848e;
        --tk-punct: #9aa0a6;
        --tk-num: #d19a66;
        --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 8px 24px rgba(0, 0, 0, 0.35);
    }
}

* {
    box-sizing: border-box;
}

[hidden] {
    display: none !important;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    background: var(--bg);
    color: var(--fg);
    font-family: var(--sans);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

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

a:hover {
    text-decoration: underline;
}

code {
    font-family: var(--mono);
    font-size: 0.86em;
    background: var(--code-bg);
    padding: 0.15em 0.4em;
    border-radius: 6px;
}

.hero {
    border-bottom: 1px solid var(--border);
    background: linear-gradient(180deg, var(--bg-soft), var(--bg));
}

.hero-inner {
    max-width: 860px;
    margin: 0 auto;
    padding: 64px 24px 48px;
    text-align: center;
}

.logo {
    border-radius: 14px;
    margin-bottom: 18px;
}

.hero h1 {
    margin: 0 0 12px;
    font-size: 2.1rem;
    letter-spacing: -0.02em;
}

.lead {
    margin: 0 auto 24px;
    max-width: 620px;
    color: var(--fg-muted);
    font-size: 1.05rem;
}

.hero-links {
    display: flex;
    flex-wrap: wrap;
    gap: 18px;
    justify-content: center;
    margin-bottom: 20px;
    font-size: 0.9rem;
}

.endpoints {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
}

.endpoints code {
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    padding: 8px 14px;
    border-radius: 999px;
    font-size: 0.8rem;
}

main {
    max-width: 860px;
    margin: 0 auto;
    padding: 0 24px;
}

.section {
    padding: 48px 0;
    border-bottom: 1px solid var(--border);
}

.section:last-of-type {
    border-bottom: none;
}

.section h2 {
    font-size: 1.5rem;
    margin: 0 0 18px;
    letter-spacing: -0.01em;
}

.section h3 {
    font-size: 1rem;
    margin: 28px 0 10px;
    color: var(--fg);
}

.section h4 {
    margin: 0 0 8px;
    font-size: 0.9rem;
    color: var(--accent);
    font-family: var(--mono);
}

.section p {
    color: var(--fg-muted);
    margin: 0 0 12px;
}

.note {
    font-size: 0.9rem;
    padding: 12px 14px;
    background: var(--accent-soft);
    border-radius: var(--radius);
    color: var(--fg);
}

/* Playground */
.playground {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.pg-form {
    display: flex;
    flex-direction: column;
    gap: 14px;
    background: var(--bg-soft);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 18px;
}

.field {
    display: flex;
    flex-direction: column;
    gap: 6px;
    flex: 1;
}

.field > span {
    font-size: 0.8rem;
    color: var(--fg-muted);
}

.field em {
    font-style: normal;
    font-family: var(--mono);
    opacity: 0.7;
}

.field-row {
    display: flex;
    gap: 14px;
}

input,
select {
    width: 100%;
    padding: 9px 11px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--bg-elevated);
    color: var(--fg);
    font-family: var(--sans);
    font-size: 0.9rem;
}

input:focus,
select:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-soft);
}

#f-jmespath {
    font-family: var(--mono);
    font-size: 0.85rem;
}

.pg-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

button {
    cursor: pointer;
    font-family: var(--sans);
}

#run-btn {
    background: var(--accent);
    color: #fff;
    border: none;
    padding: 9px 22px;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 600;
}

#run-btn:disabled {
    opacity: 0.6;
    cursor: default;
}

.hint {
    font-size: 0.82rem;
    color: var(--fg-muted);
}

.examples {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
    font-size: 0.8rem;
    color: var(--fg-muted);
}

.chip {
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: 999px;
    padding: 4px 12px;
    font-size: 0.8rem;
    color: var(--fg);
}

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

.curl-preview {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.curl-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    font-size: 0.8rem;
    color: var(--fg-muted);
}

#curl-cmd {
    margin: 0;
    white-space: pre-wrap;
    word-break: break-all;
    background: var(--bg-elevated);
}

.pg-result {
    background: var(--bg-soft);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 18px;
    min-height: 200px;
    display: flex;
    flex-direction: column;
}

.pg-result-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 12px;
}

#result-summary {
    font-size: 0.85rem;
    color: var(--fg-muted);
}

.ghost {
    background: transparent;
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 5px 12px;
    font-size: 0.8rem;
    color: var(--fg);
}

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

.cards {
    display: flex;
    flex-direction: column;
    gap: 10px;
    overflow-y: auto;
    max-height: 520px;
}

.card {
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 12px 14px;
}

.card-title {
    font-weight: 600;
    font-size: 0.95rem;
    margin-bottom: 6px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.badge {
    font-size: 0.68rem;
    font-family: var(--mono);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    padding: 2px 7px;
    border-radius: 999px;
    background: var(--accent-soft);
    color: var(--accent);
    flex-shrink: 0;
}

.card-meta {
    font-size: 0.82rem;
    color: var(--fg-muted);
    display: flex;
    flex-wrap: wrap;
    gap: 4px 12px;
}

.card-link {
    font-size: 0.8rem;
    margin-top: 6px;
    display: inline-block;
    word-break: break-all;
}

.json {
    font-family: var(--mono);
    font-size: 0.78rem;
    background: var(--code-bg);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 14px;
    overflow: auto;
    max-height: 520px;
    margin: 0;
    white-space: pre-wrap;
    word-break: break-word;
}

.empty {
    color: var(--fg-muted);
    font-size: 0.88rem;
    padding: 24px 0;
    text-align: center;
}

.error {
    color: #d33;
    font-size: 0.85rem;
}

/* Tables & code blocks */
.params {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.88rem;
    margin: 8px 0;
}

.params th,
.params td {
    text-align: left;
    padding: 9px 12px;
    border-bottom: 1px solid var(--border);
    vertical-align: top;
}

.params th {
    color: var(--fg-muted);
    font-weight: 600;
}

.params td {
    color: var(--fg);
}

.params td:nth-child(2) {
    font-family: var(--mono);
    color: var(--fg-muted);
    white-space: nowrap;
}

.code {
    font-family: var(--mono);
    font-size: 0.82rem;
    background: var(--code-bg);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 14px 16px;
    overflow-x: auto;
    line-height: 1.55;
    margin: 8px 0;
}

.examples-list {
    list-style: none;
    padding: 0;
    margin: 8px 0;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.examples-list li {
    font-size: 0.88rem;
    color: var(--fg-muted);
}

.examples-list code {
    color: var(--fg);
}

.tabs {
    margin-top: 12px;
}

.tab-bar {
    display: flex;
    gap: 2px;
    border-bottom: 1px solid var(--border);
}

.tab {
    background: transparent;
    border: none;
    border-bottom: 2px solid transparent;
    padding: 8px 18px;
    font-size: 0.85rem;
    font-family: var(--mono);
    color: var(--fg-muted);
    margin-bottom: -1px;
}

.tab:hover {
    color: var(--fg);
}

.tab.active {
    color: var(--accent);
    border-bottom-color: var(--accent);
}

.tab-panel {
    margin-top: 0;
    border-top-left-radius: 0;
}

.tk-k { color: var(--tk-key); }
.tk-t { color: var(--tk-type); }
.tk-s { color: var(--tk-string); }
.tk-p { color: var(--tk-punct); }
.tk-n { color: var(--tk-num); }
.tk-c {
    color: var(--tk-comment);
    font-style: italic;
}

.footer {
    max-width: 860px;
    margin: 0 auto;
    padding: 32px 24px 56px;
    color: var(--fg-muted);
    font-size: 0.85rem;
    text-align: center;
}