:root {
    --accent: #2f5bff;
    --accent-hover: #1f4ae6;
    --accent-soft: rgba(47, 91, 255, 0.1);
    --accent-ring: rgba(47, 91, 255, 0.18);
    --bg: #f6f7f9;
    --bg-grid: #eceef2;
    --surface: #ffffff;
    --surface-2: #fafbfc;
    --border: #e6e8ec;
    --border-strong: #d4d7dd;
    --ink: #0b0d12;
    --ink-1: #1a1d24;
    --ink-2: #4a4f5a;
    --ink-3: #8a8f9a;
    --ink-4: #b8bcc4;
    --good: #14955a;
    --good-soft: #e7f6ee;
    --warn: #b86b00;
    --warn-soft: #fff4e0;
    --bad: #c8362a;
    --bad-soft: #fdebe7;
    --radius: 10px;
    --radius-lg: 14px;
    --shadow-sm: 0 1px 2px rgba(15, 18, 25, 0.04);
    --shadow-md: 0 2px 6px rgba(15, 18, 25, 0.05), 0 1px 2px rgba(15, 18, 25, 0.04);
    --font-ui: "Space Grotesk", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
}

* {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    padding: 0;
}

body {
    min-height: 100vh;
    color: var(--ink);
    background: var(--bg);
    font-family: var(--font-ui);
    -webkit-font-smoothing: antialiased;
    line-height: 1.5;
}

body::before {
    content: "";
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    opacity: 0.7;
    background-image:
        linear-gradient(var(--bg-grid) 1px, transparent 1px),
        linear-gradient(90deg, var(--bg-grid) 1px, transparent 1px);
    background-position: -1px -1px;
    background-size: 32px 32px;
    -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, black 30%, transparent 80%);
    mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, black 30%, transparent 80%);
}

a {
    color: inherit;
}

button,
input,
textarea {
    font: inherit;
}

.app {
    position: relative;
    z-index: 1;
    width: min(1120px, calc(100% - 48px));
    margin: 0 auto;
    padding-bottom: 80px;
}

.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    padding: 20px 0 28px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
    color: inherit;
    text-decoration: none;
}

.brand-mark {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    display: grid;
    place-items: center;
    background: var(--ink);
    color: var(--surface);
    font-family: var(--font-mono);
    font-size: 14px;
    font-weight: 600;
}

.brand-text {
    display: flex;
    flex-direction: column;
    line-height: 1.1;
}

.brand-name {
    color: var(--ink);
    font-size: 15px;
    font-weight: 600;
}

.brand-sub {
    margin-top: 2px;
    color: var(--ink-3);
    font-family: var(--font-mono);
    font-size: 11px;
}

.pill {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 5px 10px;
    border: 1px solid var(--border);
    border-radius: 999px;
    background: var(--surface);
    color: var(--ink-2);
    font-family: var(--font-mono);
    font-size: 11px;
}

.pill-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--good);
    box-shadow: 0 0 0 3px var(--good-soft);
}

.tabs {
    display: inline-flex;
    gap: 0;
    margin-bottom: 24px;
    padding: 4px;
    border: 1px solid var(--border);
    border-radius: 10px;
    background: var(--surface);
    box-shadow: var(--shadow-sm);
}

.tab {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 14px;
    border-radius: 7px;
    color: var(--ink-2);
    font-size: 13px;
    font-weight: 500;
    text-decoration: none;
}

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

.tab.active {
    background: var(--ink);
    color: var(--surface);
    box-shadow: var(--shadow-sm);
}

.tab-num {
    font-family: var(--font-mono);
    font-size: 10px;
    opacity: 0.6;
}

.hero {
    max-width: 700px;
    margin-bottom: 28px;
}

.hero-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 12px;
    color: var(--ink-3);
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.hero-eyebrow::before {
    content: "";
    width: 18px;
    height: 1px;
    background: var(--ink-4);
}

.hero h1 {
    margin: 0;
    color: var(--ink);
    font-size: clamp(2rem, 5vw, 2.35rem);
    font-weight: 600;
    line-height: 1.1;
    letter-spacing: 0;
}

.hero p {
    max-width: 560px;
    margin: 12px 0 0;
    color: var(--ink-2);
    font-size: 15px;
}

.layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 16px;
    align-items: start;
}

.card {
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    background: var(--surface);
    box-shadow: var(--shadow-md);
}

.card-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 18px 22px;
    border-bottom: 1px solid var(--border);
}

.card-head h2 {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    margin: 0;
    color: var(--ink);
    font-size: 14px;
    font-weight: 600;
}

.card-head h2::before {
    content: "";
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background: var(--accent);
}

.card-body {
    padding: 22px;
}

.field {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.field + .field {
    margin-top: 18px;
}

.label {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    color: var(--ink-1);
    font-size: 12px;
    font-weight: 500;
}

.label-hint {
    color: var(--ink-3);
    font-family: var(--font-mono);
    font-size: 11px;
    font-weight: 400;
}

.input,
.textarea {
    width: 100%;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    outline: none;
    background: var(--surface-2);
    color: var(--ink);
    font-size: 14px;
    transition: border-color 0.15s, box-shadow 0.15s, background 0.15s;
}

.input {
    min-height: 42px;
    padding: 10px 12px;
}

.textarea {
    min-height: 92px;
    padding: 10px 12px;
    resize: vertical;
}

.input.mono,
.textarea.mono {
    font-family: var(--font-mono);
    font-size: 13px;
}

.input:focus,
.textarea:focus {
    border-color: var(--accent);
    background: var(--surface);
    box-shadow: 0 0 0 3px var(--accent-ring);
}

.status-chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 3px 8px;
    border-radius: 999px;
    font-family: var(--font-mono);
    font-size: 10px;
    font-weight: 500;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    white-space: nowrap;
}

.status-chip.good {
    color: var(--good);
    background: var(--good-soft);
}

.status-chip.warn {
    color: var(--warn);
    background: var(--warn-soft);
}

.status-chip.bad {
    color: var(--bad);
    background: var(--bad-soft);
}

.status-chip.idle {
    color: var(--ink-3);
    background: var(--bg-grid);
}

.status-dot {
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: currentColor;
}

.meter {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-top: 4px;
}

.meter-track {
    height: 4px;
    overflow: hidden;
    border-radius: 2px;
    background: var(--bg-grid);
}

.meter-fill {
    width: 0;
    height: 100%;
    border-radius: 2px;
    transition: width 0.25s ease, background 0.2s;
}

.meter-fill.good {
    background: var(--good);
}

.meter-fill.warn {
    background: var(--warn);
}

.meter-fill.bad {
    background: var(--bad);
}

.meter-fill.idle {
    background: var(--ink-4);
}

.meter-stats {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    color: var(--ink-3);
    font-family: var(--font-mono);
    font-size: 11px;
}

.meter-stats b {
    color: var(--ink);
    font-weight: 600;
}

.btn {
    appearance: none;
    border: 0;
    border-radius: var(--radius);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    min-height: 38px;
    padding: 8px 14px;
    color: #ffffff;
    background: var(--accent);
    font-size: 13px;
    font-weight: 500;
    text-decoration: none;
    transition: transform 0.15s, box-shadow 0.15s, background 0.15s;
}

.btn:hover {
    background: var(--accent-hover);
    box-shadow: 0 6px 16px var(--accent-ring);
    transform: translateY(-1px);
}

.btn-ghost {
    border: 1px solid var(--border);
    background: transparent;
    color: var(--ink-2);
}

.btn-ghost:hover {
    border-color: var(--border-strong);
    background: var(--surface-2);
    color: var(--ink);
    box-shadow: none;
}

.btn-icon {
    width: 36px;
    min-height: 36px;
    padding: 0;
}

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

.preset {
    appearance: none;
    border: 1px solid var(--border);
    border-radius: 999px;
    background: var(--surface);
    color: var(--ink-2);
    cursor: pointer;
    padding: 5px 10px;
    font-family: var(--font-mono);
    font-size: 11px;
    transition: background 0.15s, border-color 0.15s, color 0.15s;
}

.preset:hover {
    border-color: var(--border-strong);
    background: var(--surface-2);
    color: var(--ink);
}

.options {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px 18px;
    margin-top: 14px;
    padding: 14px 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--surface-2);
}

.opt {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    color: var(--ink-1);
    font-size: 13px;
}

.opt-label {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.opt-label small {
    color: var(--ink-3);
    font-family: var(--font-mono);
    font-size: 10px;
}

.switch {
    appearance: none;
    width: 30px;
    height: 18px;
    border: 0;
    border-radius: 999px;
    cursor: pointer;
    background: var(--border-strong);
    position: relative;
    flex: 0 0 auto;
}

.switch::after {
    content: "";
    position: absolute;
    top: 2px;
    left: 2px;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: #ffffff;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
    transition: transform 0.15s;
}

.switch[aria-pressed="true"] {
    background: var(--accent);
}

.switch[aria-pressed="true"]::after {
    transform: translateX(12px);
}

.seg {
    display: inline-flex;
    padding: 2px;
    border-radius: 7px;
    background: var(--bg-grid);
}

.seg button {
    appearance: none;
    border: 0;
    border-radius: 5px;
    background: transparent;
    color: var(--ink-2);
    cursor: pointer;
    padding: 5px 10px;
    font-family: var(--font-mono);
    font-size: 11px;
    font-weight: 500;
}

.seg button.active {
    background: var(--surface);
    color: var(--ink);
    box-shadow: var(--shadow-sm);
}

.slug-output {
    display: flex;
    align-items: stretch;
    overflow: hidden;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--surface-2);
}

.slug-prefix {
    padding: 11px 12px;
    border-right: 1px solid var(--border);
    background: var(--bg-grid);
    color: var(--ink-3);
    font-family: var(--font-mono);
    font-size: 13px;
    white-space: nowrap;
}

.slug-text {
    flex: 1;
    min-width: 0;
    padding: 11px 12px;
    border: 0;
    outline: 0;
    background: transparent;
    color: var(--ink);
    font-family: var(--font-mono);
    font-size: 13px;
    overflow-wrap: anywhere;
}

.slug-text.placeholder {
    color: var(--ink-4);
}

.slug-copy {
    appearance: none;
    border: 0;
    border-left: 1px solid var(--border);
    background: var(--surface);
    color: var(--ink-2);
    cursor: pointer;
    padding: 0 14px;
    font-family: var(--font-mono);
    font-size: 11px;
    font-weight: 500;
    white-space: nowrap;
}

.slug-copy:hover,
.slug-copy.copied {
    color: var(--good);
}

.insights {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 8px;
    margin-top: 18px;
}

.insight {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 12px 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--surface-2);
}

.insight.good {
    border-color: var(--good);
    background: var(--good-soft);
}

.insight.warn {
    border-color: var(--warn);
    background: var(--warn-soft);
}

.insight.bad {
    border-color: var(--bad);
    background: var(--bad-soft);
}

.insight-label {
    color: var(--ink-3);
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.insight-value {
    color: var(--ink);
    font-family: var(--font-mono);
    font-size: 18px;
    font-weight: 600;
}

.insight.good .insight-value {
    color: var(--good);
}

.insight.warn .insight-value {
    color: var(--warn);
}

.insight.bad .insight-value {
    color: var(--bad);
}

.insight-sub {
    color: var(--ink-2);
    font-size: 11px;
}

.serp-tabs {
    display: inline-flex;
    gap: 2px;
    padding: 2px;
    border-radius: 7px;
    background: var(--bg-grid);
}

.serp-tabs button {
    appearance: none;
    border: 0;
    border-radius: 5px;
    background: transparent;
    color: var(--ink-2);
    cursor: pointer;
    padding: 5px 10px;
    font-family: var(--font-mono);
    font-size: 11px;
    font-weight: 500;
}

.serp-tabs button.active {
    background: var(--surface);
    color: var(--ink);
    box-shadow: var(--shadow-sm);
}

.serp {
    margin-top: 14px;
    padding: 18px 20px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: #ffffff;
    color: #1f1f1f;
    font-family: arial, sans-serif;
}

.serp.mobile {
    max-width: 380px;
    border-radius: 16px;
    box-shadow: var(--shadow-md);
}

.serp-favicon-row {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 4px;
}

.serp-favicon {
    width: 26px;
    height: 26px;
    border-radius: 50%;
    display: grid;
    place-items: center;
    flex: 0 0 auto;
    background: var(--bg-grid);
    color: var(--ink-2);
    font-family: var(--font-mono);
    font-size: 11px;
    font-weight: 600;
}

.serp-site {
    display: flex;
    flex-direction: column;
    min-width: 0;
    line-height: 1.2;
}

.serp-site-name {
    color: #1f1f1f;
    font-size: 14px;
}

.serp-url {
    color: #4d5156;
    font-size: 12px;
    overflow-wrap: anywhere;
}

.serp-title {
    margin: 0 0 4px;
    color: #1a0dab;
    cursor: pointer;
    font-size: 20px;
    font-weight: 400;
    line-height: 1.3;
}

.serp.mobile .serp-title {
    font-size: 18px;
}

.serp-title:hover {
    text-decoration: underline;
}

.serp-desc {
    margin: 0;
    color: #4d5156;
    font-size: 14px;
    line-height: 1.58;
}

.serp-date {
    color: #70757a;
}

.faq {
    display: grid;
    gap: 8px;
    margin-top: 16px;
}

.faq details {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--surface-2);
}

.faq summary {
    cursor: pointer;
    padding: 12px 14px;
    color: var(--ink-1);
    font-size: 13px;
    font-weight: 600;
}

.faq p {
    margin: 0;
    padding: 0 14px 14px;
    color: var(--ink-2);
    font-size: 13px;
}

.footnote {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
    margin-top: 32px;
    color: var(--ink-3);
    font-family: var(--font-mono);
    font-size: 11px;
    text-align: center;
}

.footnote span {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.footnote span::before {
    content: "";
    width: 3px;
    height: 3px;
    border-radius: 50%;
    background: var(--ink-4);
}

.fade-up {
    animation: fadeUp 0.3s ease both;
}

@keyframes fadeUp {
    from {
        opacity: 0;
        transform: translateY(6px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 880px) {
    .layout {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 660px) {
    .app {
        width: min(100% - 32px, 1120px);
    }

    .topbar {
        align-items: flex-start;
        flex-direction: column;
    }

    .tabs {
        width: 100%;
    }

    .tab {
        flex: 1;
        justify-content: center;
    }

    .card-head {
        align-items: flex-start;
        flex-direction: column;
    }

    .options,
    .insights {
        grid-template-columns: 1fr;
    }

    .slug-output {
        flex-direction: column;
    }

    .slug-prefix,
    .slug-copy {
        border-right: 0;
        border-left: 0;
    }

    .slug-copy {
        min-height: 38px;
        border-top: 1px solid var(--border);
    }
}