:root {
    --page: #f4f4ef;
    --card: #fffef9;
    --ink: #161616;
    --muted: #5b5f61;
    --accent: #1f5f8b;
    --accent-strong: #123d59;
    --border: #d8ddd8;
    --good-bg: #e7f4ea;
    --good-ink: #1f5c2b;
    --bad-bg: #f9e3df;
    --bad-ink: #8b2d21;
    --soft: #eef2f1;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: "Avenir Next", "Segoe UI", Helvetica, Arial, sans-serif;
    color: var(--ink);
    background:
        radial-gradient(circle at top left, rgba(31, 95, 139, 0.10), transparent 26%),
        linear-gradient(180deg, #fbfbf8 0%, var(--page) 100%);
}

.shell {
    max-width: 1120px;
    margin: 0 auto;
    padding: 28px 18px 40px;
}

.hero {
    margin-bottom: 24px;
    padding: 28px;
    border: 1px solid var(--border);
    border-radius: 18px;
    background: linear-gradient(135deg, rgba(31, 95, 139, 0.08), rgba(255, 254, 249, 0.96));
}

h1 {
    margin: 0 0 10px;
    font-size: clamp(2rem, 4vw, 3rem);
    line-height: 0.98;
    letter-spacing: -0.03em;
}

.hero-title {
    display: flex;
    align-items: center;
    gap: 14px;
}

.hero-title-icon {
    flex: 0 0 auto;
    width: 56px;
    height: 56px;
    border-radius: 14px;
    box-shadow: 0 8px 18px rgba(18, 61, 89, 0.16);
}

h2 {
    margin-top: 0;
    font-size: 1.1rem;
    letter-spacing: -0.02em;
}

h3 {
    margin: 0;
    font-size: 0.98rem;
    letter-spacing: -0.01em;
}

.hero p,
.hint,
.panel p,
.output {
    color: var(--muted);
}

.feature-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 24px;
    padding: 8px;
    border: 1px solid var(--border);
    border-radius: 18px;
    background: var(--card);
}

.feature-nav-item {
    display: flex;
    flex: 1 1 240px;
    align-content: center;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 8px;
    min-height: 48px;
    padding: 12px 16px;
    border: 1px solid transparent;
    border-radius: 12px;
    color: var(--accent-strong);
    font-weight: 700;
    text-align: center;
    text-decoration: none;
}

.feature-nav a:hover {
    background: var(--soft);
    text-decoration: underline;
    text-underline-offset: 3px;
}

.feature-nav a:focus-visible {
    outline: 3px solid var(--accent);
    outline-offset: 2px;
}

.feature-nav a[aria-current="page"] {
    border-color: var(--accent-strong);
    background: var(--accent);
    color: #fff;
}

.feature-nav-unavailable {
    color: var(--muted);
    background: var(--soft);
}

.feature-nav-label {
    /* Keep the label together so the badge wraps onto its own line first. */
    flex: 0 0 auto;
    max-width: 100%;
}

.feature-nav-badge {
    flex: 0 0 auto;
    padding: 3px 8px;
    border: 1px solid var(--border);
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 500;
    white-space: nowrap;
}

.layout {
    display: grid;
    gap: 20px;
    grid-template-columns: minmax(0, 2.1fr) minmax(280px, 1fr);
}

.faq-section {
    margin-top: 22px;
}

.faq-intro {
    margin: 0 0 18px;
    max-width: 72ch;
}

.faq-list {
    display: grid;
    gap: 14px;
}

.faq-item {
    border: 1px solid var(--border);
    border-radius: 16px;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(244, 247, 246, 0.96));
    overflow: hidden;
}

.faq-item summary {
    cursor: pointer;
    list-style: none;
    padding: 16px 18px;
    font-weight: 700;
}

.faq-item summary::-webkit-details-marker {
    display: none;
}

.faq-item[open] summary {
    border-bottom: 1px solid var(--border);
}

.faq-item p {
    margin: 0;
    padding: 14px 18px 18px;
}

.panel {
    padding: 20px;
    border: 1px solid var(--border);
    border-radius: 18px;
    background: var(--card);
    box-shadow: 0 10px 30px rgba(29, 29, 27, 0.05);
}

.panel.compact {
    max-width: 720px;
}

.controls {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-bottom: 14px;
}

.controls.controls-bottom {
    margin-top: 32px;
    margin-bottom: 0;
    padding-top: 18px;
    border-top: 1px solid var(--border);
}

button,
.download-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 999px;
    border: 1px solid var(--accent-strong);
    background: var(--accent);
    color: #fff;
    font: inherit;
    padding: 10px 16px;
    cursor: pointer;
    text-decoration: none;
    transition: transform 120ms ease, background-color 120ms ease, color 120ms ease;
}

.link-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 999px;
    border: 1px solid #c9d3d4;
    background: var(--soft);
    color: var(--accent-strong);
    font: inherit;
    padding: 10px 16px;
    text-decoration: none;
    transition: transform 120ms ease, background-color 120ms ease, color 120ms ease;
}

button:hover,
.download-link:hover,
.link-button:hover {
    transform: translateY(-1px);
}

button.secondary {
    background: var(--soft);
    color: var(--accent-strong);
    border-color: #c9d3d4;
}

.field-row {
    display: grid;
    gap: 14px;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    margin-bottom: 18px;
}

label {
    display: block;
    font-weight: 700;
    margin-bottom: 8px;
}

.honeypot-field {
    position: absolute;
    left: -10000px;
    width: 1px;
    height: 1px;
    overflow: hidden;
}

input[type="number"],
input[type="text"],
select {
    width: 100%;
    padding: 12px 14px;
    border-radius: 12px;
    border: 1px solid var(--border);
    font: inherit;
    background: #fff;
}

input[type="number"]:focus,
input[type="text"]:focus,
select:focus,
input[type="checkbox"]:focus {
    outline: 2px solid rgba(31, 95, 139, 0.22);
    outline-offset: 2px;
}

input[data-state-score]::placeholder {
    color: #90989c;
    font-style: italic;
    opacity: 1;
}

input[data-state-score]:focus::placeholder {
    opacity: 0;
}

.field-row-secondary {
    grid-template-columns: minmax(0, 1fr);
    margin-top: -2px;
}

.support-link-row {
    margin-bottom: 18px;
}

.support-link-copy {
    margin: 0;
    font-size: 0.95rem;
    color: var(--muted);
}

.support-link-copy a {
    color: var(--accent-strong);
    font-weight: 700;
    text-decoration: underline;
    text-underline-offset: 0.12em;
}

.form-section-divider {
    margin: 20px 0 18px;
    border-top: 1px solid var(--border);
}

[data-radio-only][hidden],
[hidden] {
    display: none !important;
}

.export-summary {
    padding: 14px 16px;
    margin: 16px 0;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: var(--soft);
    color: var(--accent-strong);
}

.export-summary strong {
    font-size: 1.15rem;
    font-variant-numeric: tabular-nums;
}

.export-summary .hint {
    margin-bottom: 0;
}

.state-grid {
    display: grid;
    gap: 14px;
    grid-template-columns: 1fr;
}

.state-group {
    border: 1px solid var(--border);
    border-radius: 12px;
    background: rgba(238, 242, 241, 0.48);
    overflow: hidden;
}

.state-group-heading {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin: 0;
    padding: 12px 14px;
    color: var(--accent-strong);
    font-size: 0.95rem;
    font-weight: 800;
    letter-spacing: 0;
    cursor: pointer;
    list-style: none;
}

.state-group-heading::-webkit-details-marker {
    display: none;
}

.state-group-heading::after {
    content: "+";
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 1.4rem;
    height: 1.4rem;
    border-radius: 999px;
    border: 1px solid #c9d3d4;
    background: #fff;
    color: var(--accent-strong);
    font-weight: 800;
}

.state-group[open] .state-group-heading::after {
    content: "-";
}

.state-group-options {
    display: grid;
    gap: 10px 14px;
    grid-template-columns: 1fr;
    padding: 0 12px 12px;
}

.state-option {
    display: grid;
    gap: 12px;
    grid-template-columns: minmax(0, 1fr) 112px;
    align-items: center;
    padding: 12px 14px;
    border-radius: 12px;
    border: 1px solid #dfe5df;
    background: #fff;
}

.state-choice {
    display: flex;
    gap: 10px;
    align-items: flex-start;
}

.state-option label {
    margin: 0;
    font-weight: 400;
}

.state-code {
    display: inline-block;
    min-width: 2.2rem;
    font-weight: 700;
    color: var(--accent-strong);
}

.state-meta {
    margin-top: 2px;
    font-size: 0.92rem;
    color: var(--muted);
}

.count-pill {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 4.2rem;
    padding: 0.2rem 0.5rem;
    border-radius: 999px;
    background: var(--soft);
    color: var(--accent-strong);
    font-size: 0.84rem;
    font-weight: 700;
}

.state-threshold label {
    margin-bottom: 6px;
    font-size: 0.82rem;
    font-weight: 700;
    color: var(--muted);
}

.state-threshold input[type="number"] {
    padding: 10px 12px;
}

code {
    padding: 0.08rem 0.34rem;
    border-radius: 0.45rem;
    background: var(--soft);
    font-family: "SFMono-Regular", Menlo, Consolas, monospace;
    font-size: 0.92em;
}

.message,
.error,
.warning {
    margin-bottom: 12px;
    padding: 12px 14px;
    border-radius: 12px;
}

.message {
    background: var(--good-bg);
    color: var(--good-ink);
}

.error {
    background: var(--bad-bg);
    color: var(--bad-ink);
}

.warning {
    background: #fff3d6;
    color: #7a4a00;
    border: 1px solid #f0cf86;
    font-weight: 700;
}

pre.output {
    margin: 14px 0 0;
    padding: 14px;
    border-radius: 12px;
    border: 1px solid #eadfcb;
    background: #f9f6ef;
    white-space: pre-wrap;
    word-break: break-word;
    font-size: 0.9rem;
    line-height: 1.45;
}

ul.meta {
    margin: 0 0 22px;
    padding-left: 1.2rem;
}

.meta li + li {
    margin-top: 8px;
}

aside.panel h2,
aside.panel h3 {
    margin-bottom: 10px;
}

aside.panel h2:not(:first-child),
aside.panel h3:not(:first-child) {
    margin-top: 22px;
}

.stack {
    display: grid;
    gap: 16px;
}

.actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-top: 6px;
}

.generated-file-links {
    display: grid;
    gap: 10px;
}

.table-meta {
    margin: 0;
}

.log-card {
    padding: 18px;
    border: 1px solid var(--border);
    border-radius: 16px;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(244, 247, 246, 0.96));
}

.log-header h2 {
    margin-bottom: 8px;
}

.log-meta {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    margin: 0;
    font-size: 0.92rem;
}

.log-output {
    max-height: 560px;
    overflow: auto;
}

.table-scroll {
    overflow-x: auto;
    border: 1px solid var(--border);
    border-radius: 16px;
    background: #fff;
}

.csv-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 720px;
}

.csv-table th,
.csv-table td {
    padding: 12px 14px;
    text-align: left;
    vertical-align: top;
    border-bottom: 1px solid #e4e9e5;
    font-size: 0.94rem;
}

.csv-table th {
    position: sticky;
    top: 0;
    background: #eff5f8;
    color: var(--accent-strong);
    font-size: 0.82rem;
    letter-spacing: 0.03em;
    text-transform: uppercase;
    z-index: 1;
}

.csv-table tbody tr:nth-child(even) {
    background: #fbfcfa;
}

.csv-table tbody tr:hover {
    background: #f2f7fa;
}

.csv-table td {
    white-space: nowrap;
}

.csv-table td a {
    color: var(--accent-strong);
    text-decoration: underline;
    text-underline-offset: 0.12em;
}

@media (max-width: 860px) {
    .layout,
    .field-row {
        grid-template-columns: 1fr;
    }

    .state-option {
        grid-template-columns: 1fr;
    }

    .csv-table {
        min-width: 640px;
    }
}

/* Shared help bubbles for Proximity Search and memory banks. */
.help-tip {
    position: relative;
    display: flex;
    align-items: center;
    gap: 8px;
    width: fit-content;
    max-width: 100%;
}

[data-field-help] > label {
    margin-bottom: 0;
}

.field-row [data-field-help] {
    margin-bottom: 8px;
}

.zip-row .zip-help-button,
.help-tip .help-button {
    flex: 0 0 24px;
    width: 24px;
    height: 24px;
    padding: 0;
    background: #eef2f1;
    border: 1px solid #afbdc5;
    color: #123d59;
    font-size: 14px;
    font-weight: 700;
    transform: none;
}

.zip-help-button:focus-visible,
.help-button:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 3px;
}

.zip-tooltip,
.help-tooltip {
    position: absolute;
    z-index: 1000;
    top: calc(100% + 10px);
    left: 0;
    width: 300px;
    max-width: calc(100vw - 80px);
    padding: 16px 18px;
    border: 1px solid #c8dce8;
    border-radius: 14px;
    background: #fffef9;
    box-shadow: 0 8px 28px rgba(18, 61, 89, 0.18);
    font-size: 16px;
    line-height: 1.5;
}

.zip-tooltip p,
.help-tooltip p {
    margin: 0;
    color: #213547;
}

.zip-tooltip p + p,
.help-tooltip p + p {
    margin-top: 10px;
    font-size: 14px;
}

/* The existing palette is the light theme. Follow the browser/system preference
   without JavaScript, storage, or a flash of the wrong theme. */
:root {
    color-scheme: light;
}

@media (prefers-color-scheme: dark) {
    :root {
        color-scheme: dark;
        --page: #080f16;
        --card: #101c27;
        --ink: #edf4f8;
        --muted: #aebfcd;
        --accent: #55cfff;
        --accent-strong: #a3e4ff;
        --border: #304656;
        --good-bg: #142f25;
        --good-ink: #a3e9ba;
        --bad-bg: #391d25;
        --bad-ink: #ffb6ba;
        --soft: #192b39;
        --action: #b82332;
        --action-hover: #d12a3a;
        --input: #0b1620;
        --warning-bg: #352a15;
        --warning-ink: #ffda8a;
        --warning-border: #81652d;
    }

    body {
        background:
            radial-gradient(ellipse at top right, rgba(43, 156, 205, 0.13), transparent 45%),
            linear-gradient(180deg, #0d1822 0%, var(--page) 100%);
    }

    a {
        color: var(--accent);
    }

    a:visited {
        color: var(--accent-strong);
    }

    .hero {
        border-top: 3px solid #f13240;
        background: linear-gradient(125deg, #172b3b, #0d1822 80%);
    }

    .hero-title {
        color: #fff;
    }

    .panel {
        box-shadow: 0 12px 32px rgba(0, 0, 0, 0.22);
    }

    .faq-item,
    .log-card {
        background: linear-gradient(180deg, #142431, var(--card));
    }

    button,
    .download-link,
    .download-link:visited,
    .feature-nav a[aria-current="page"] {
        background: var(--action);
        border-color: #ee6570;
        color: #fff;
    }

    button:hover,
    .download-link:hover {
        background: var(--action-hover);
    }

    button.secondary,
    .link-button,
    .link-button:visited {
        background: var(--soft);
        border-color: var(--border);
        color: var(--accent-strong);
    }

    button.secondary:hover,
    .link-button:hover {
        background: #233e50;
        border-color: var(--accent);
    }

    button:focus-visible,
    a:focus-visible {
        outline: 2px solid var(--accent);
        outline-offset: 3px;
    }

    input[type="number"],
    input[type="text"],
    input[type="search"],
    select,
    textarea {
        background: var(--input);
        color: var(--ink);
    }

    input[type="checkbox"],
    input[type="radio"] {
        accent-color: var(--accent);
    }

    input:focus,
    select:focus,
    textarea:focus {
        outline: 2px solid var(--accent);
        outline-offset: 2px;
    }

    input::placeholder,
    input[data-state-score]::placeholder,
    textarea::placeholder {
        color: #92a8ba;
    }

    .state-group {
        background: #0c1721;
    }

    .state-option,
    .state-group-heading::after {
        background: var(--card);
        border-color: var(--border);
    }

    .count-pill[data-state-dstar] {
        background: #35202b;
        color: #ffb6ba;
    }

    .warning {
        background: var(--warning-bg);
        color: var(--warning-ink);
        border-color: var(--warning-border);
    }

    pre.output,
    .table-scroll {
        background: var(--input);
        border-color: var(--border);
    }

    .csv-table th,
    .csv-table td {
        border-color: var(--border);
    }

    .csv-table th {
        background: #1b3040;
    }

    .csv-table tbody tr:nth-child(even) {
        background: #122330;
    }

    .csv-table tbody tr:hover {
        background: #203b4d;
    }

    .zip-row .zip-help-button,
    .help-tip .help-button {
        background: var(--soft);
        border-color: #56758b;
        color: var(--accent-strong);
    }

    .zip-tooltip,
    .help-tooltip {
        background: #192b39;
        border-color: #56758b;
        box-shadow: 0 8px 28px rgba(0, 0, 0, 0.45);
    }

    .zip-tooltip p,
    .help-tooltip p {
        color: var(--ink);
    }
}