@import url('https://fonts.googleapis.com/css2?family=Inter:ital,opsz,wght@0,14..32,100..900;1,14..32,100..900&display=swap');

:root {
    color-scheme: dark;
    --bg: #2d2f34;
    --bg-deep: #24262b;
    --bg-floor: #202227;
    --panel: #33363d;
    --panel-2: #3a3d45;
    --panel-3: #2c2f35;
    --line: #545963;
    --line-soft: #474c55;
    --line-quiet: rgba(238, 241, 245, 0.05);
    --text: #eeefec;
    --text-soft: #c4c8cf;
    --text-dim: #959aa4;
    --accent: #d8d9d6;
    --accent-soft: #b8bdc6;
    --success: #d8dadf;
    --danger: #c3a1a1;
    --shadow: 0 20px 42px rgba(0, 0, 0, 0.18);
    --shadow-deep: 0 28px 70px rgba(0, 0, 0, 0.28);
    --highlight: inset 0 1px 0 rgba(255, 255, 255, 0.03);
    --radius-sm: 10px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --container: 1180px;
    --space-1: 0.5rem;
    --space-2: 0.75rem;
    --space-3: 1rem;
    --space-4: 1.5rem;
    --space-5: 2rem;
    --space-6: 3rem;
    --space-7: 4rem;
    --font-sans: "Inter", "Avenir Next", "Segoe UI", sans-serif;
    --font-mono: "SFMono-Regular", "Menlo", "Consolas", monospace;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    min-height: 100vh;
    color: var(--text);
    background:
        radial-gradient(circle at top center, rgba(255, 255, 255, 0.03), transparent 28%),
        linear-gradient(180deg, #31343a 0%, var(--bg) 26%, var(--bg-deep) 100%);
    font-family: var(--font-sans);
    line-height: 1.58;
    letter-spacing: -0.01em;
}

img {
    max-width: 100%;
    display: block;
}

a {
    color: inherit;
    text-decoration: none;
}

button,
input,
textarea,
select {
    font: inherit;
}

input,
textarea,
select {
    width: 100%;
    appearance: none;
    border: 1px solid var(--line-soft);
    border-radius: var(--radius-sm);
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.025), rgba(255, 255, 255, 0) 60%), var(--panel-3);
    color: var(--text);
    padding: 0.92rem 1rem;
    transition: border-color 160ms ease, box-shadow 160ms ease, background-color 160ms ease, transform 160ms ease;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.02);
}

input::placeholder,
textarea::placeholder {
    color: var(--text-dim);
}

textarea:focus,
input:focus,
select:focus {
    outline: none;
    border-color: #717784;
    box-shadow:
        inset 0 1px 0 rgba(255, 255, 255, 0.03),
        0 0 0 3px rgba(238, 241, 245, 0.05);
}

textarea {
    resize: vertical;
}

select {
    background-image:
        linear-gradient(45deg, transparent 50%, var(--text-dim) 50%),
        linear-gradient(135deg, var(--text-dim) 50%, transparent 50%);
    background-position:
        calc(100% - 20px) calc(50% - 2px),
        calc(100% - 14px) calc(50% - 2px);
    background-size: 6px 6px, 6px 6px;
    background-repeat: no-repeat;
    padding-right: 2.75rem;
}

code,
pre,
textarea,
.tool-output-text,
.code-block {
    font-family: var(--font-mono);
}

code {
    color: var(--text-soft);
}

.site-shell {
    width: min(100% - 1.5rem, var(--container));
    margin: 0 auto;
}

.site-header {
    position: relative;
    padding: 1.1rem 0 0;
}

.site-header__inner,
.site-footer__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.site-brand {
    display: inline-flex;
    align-items: center;
    gap: 0.82rem;
    font-weight: 620;
    letter-spacing: -0.03em;
}

.site-brand__mark {
    display: inline-grid;
    place-items: center;
    width: 2.25rem;
    height: 2.25rem;
    border-radius: 0.8rem;
    border: 1px solid var(--line);
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.03), rgba(255, 255, 255, 0)), var(--panel-3);
    color: var(--text);
    font-size: 0.78rem;
    font-weight: 650;
    text-transform: lowercase;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.02);
}

.site-brand__text {
    font-size: 1rem;
}

.site-header__tagline,
.site-header__link,
.site-footer__copy {
    color: var(--text-dim);
    font-size: 0.9rem;
}

.site-footer__meta {
    color: var(--text-dim);
    font-size: 0.76rem;
    letter-spacing: 0.16em;
    text-transform: uppercase;
}

.site-header__link {
    transition: color 160ms ease, opacity 160ms ease;
}

.site-header__link:hover,
.site-header__link:focus-visible {
    color: var(--text-soft);
}

.site-main {
    padding: 2.8rem 0 4.5rem;
}

.site-footer {
    padding: 0 0 2.2rem;
}

.button,
.mini-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.42rem;
    border: 1px solid var(--line-soft);
    border-radius: 0.8rem;
    padding: 0.88rem 1.12rem;
    cursor: pointer;
    transition: transform 160ms ease, box-shadow 160ms ease, border-color 160ms ease, background-color 160ms ease, color 160ms ease;
}

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

.button:active,
.mini-button:active {
    transform: translateY(0);
}

.button--primary {
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.045), rgba(255, 255, 255, 0)), var(--panel-2);
    border-color: #676d78;
    color: var(--text);
    box-shadow: var(--highlight), 0 10px 24px rgba(0, 0, 0, 0.18);
}

.button--secondary,
.mini-button {
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.028), rgba(255, 255, 255, 0)), var(--panel);
    color: var(--text-soft);
    box-shadow: var(--highlight);
}

.button--ghost {
    background: var(--bg-deep);
    color: var(--text-dim);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.02);
}

.button--primary:hover,
.button--secondary:hover,
.button--ghost:hover,
.mini-button:hover {
    border-color: #717784;
    color: var(--text);
    box-shadow: var(--highlight), 0 14px 28px rgba(0, 0, 0, 0.18);
}

.tool-panel,
.tool-card,
.search-panel,
.info-card,
.option-card,
.snippet-card,
.result-card {
    border: 0;
    border-radius: var(--radius-md);
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.024), rgba(255, 255, 255, 0) 48%), var(--panel);
    box-shadow: var(--highlight), var(--shadow);
}

.tool-control {
    display: grid;
    gap: 0.72rem;
}

.tool-control__label {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    font-size: 0.77rem;
    font-weight: 620;
    color: var(--text-dim);
    letter-spacing: 0.16em;
    text-transform: uppercase;
}

.tool-control__value,
.pill {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 3rem;
    padding: 0.28rem 0.6rem;
    border: 1px solid var(--line-soft);
    border-radius: 999px;
    background: var(--panel-3);
    color: var(--text-soft);
    font-size: 0.75rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.tool-checkbox {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    padding: 1rem 1.05rem;
    border: 1px solid var(--line-soft);
    border-radius: var(--radius-sm);
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.02), rgba(255, 255, 255, 0)), var(--panel-3);
    color: var(--text-soft);
}

.tool-checkbox input {
    width: 1rem;
    height: 1rem;
    margin: 0;
    border-radius: 0.35rem;
    border: 1px solid var(--line);
    background: var(--bg-deep);
    box-shadow: none;
}

.tool-checkbox input:checked {
    background: var(--text-soft);
    border-color: var(--text-soft);
}

.tool-preview,
.tool-output-text,
.data-table-wrap,
.preview-card__surface,
.empty-card,
.tool-helper {
    border: 1px solid var(--line-soft);
    border-radius: var(--radius-sm);
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.015), rgba(255, 255, 255, 0)), var(--panel-3);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.02);
}

.tool-preview {
    min-height: 12rem;
    padding: 1.15rem;
}

.tool-output-text {
    margin-top: 1rem;
    min-height: 9rem;
    color: var(--text-soft);
}

.tool-preview__empty,
.soft-note,
.tool-helper p,
.result-note {
    color: var(--text-dim);
}

.tool-output-text--hidden {
    display: none;
}

.tool-feedback--success {
    color: var(--success);
}

.tool-feedback--error {
    color: var(--danger);
}

.metric-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.9rem;
}

.metric-card,
.selection-item,
.result-list__item,
.swatch-card {
    border: 1px solid var(--line-soft);
    border-radius: var(--radius-sm);
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.02), rgba(255, 255, 255, 0)), var(--panel-2);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.02);
}

.metric-card {
    padding: 1rem;
}

.metric-card__value {
    display: block;
    font-size: 1.35rem;
    font-weight: 620;
    letter-spacing: -0.04em;
    color: var(--text);
}

.metric-card__label {
    display: block;
    color: var(--text-dim);
    font-size: 0.76rem;
    margin-top: 0.35rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}

.swatch-grid {
    display: grid;
    gap: 0.9rem;
}

.swatch-card {
    overflow: hidden;
}

.swatch-card__color {
    height: 4.8rem;
}

.swatch-card__meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.8rem;
    padding: 0.95rem 1rem;
}

.preview-card {
    display: grid;
    gap: 0.95rem;
}

.info-card,
.option-card,
.snippet-card,
.result-card {
    padding: 1.1rem;
}

.stack-list {
    display: grid;
    gap: 0.85rem;
}

.inline-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
}

.empty-card {
    padding: 1.15rem;
    border-style: dashed;
    color: var(--text-dim);
}

.code-block {
    margin: 0;
    padding: 1.05rem 1.1rem;
    border: 1px solid var(--line-soft);
    border-radius: var(--radius-sm);
    background: #1f2125;
    color: #e6e7e3;
    font-size: 0.92rem;
    line-height: 1.65;
    overflow: auto;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.02);
}

.mini-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.55rem;
    margin-top: 0.85rem;
}

.data-table-wrap {
    overflow: auto;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 28rem;
}

.data-table th,
.data-table td {
    padding: 0.9rem 1rem;
    border-bottom: 1px solid var(--line-quiet);
    text-align: left;
    font-size: 0.92rem;
}

.data-table th {
    color: var(--text-dim);
    font-weight: 620;
    font-size: 0.74rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    background: rgba(255, 255, 255, 0.02);
}

.detail-grid {
    display: grid;
    gap: 1rem;
}

.split-grid {
    display: grid;
    gap: 1.2rem;
}

.selection-list {
    display: grid;
    gap: 0.8rem;
}

.selection-item {
    width: 100%;
    text-align: left;
    padding: 1rem 1.05rem;
    cursor: pointer;
    transition: border-color 160ms ease, background-color 160ms ease, transform 160ms ease, box-shadow 160ms ease;
}

.selection-item:hover,
.selection-item.is-active {
    border-color: #6d7480;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.03), rgba(255, 255, 255, 0)), var(--panel);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.03), 0 14px 28px rgba(0, 0, 0, 0.18);
    transform: translateY(-1px);
}

.selection-item__title {
    display: block;
    color: var(--text);
    font-weight: 620;
    letter-spacing: -0.03em;
}

.selection-item__meta {
    display: block;
    margin-top: 0.45rem;
    color: var(--text-dim);
    font-size: 0.85rem;
    line-height: 1.5;
}

.result-list {
    display: grid;
    gap: 0.72rem;
    margin: 0;
    padding: 0;
    list-style: none;
}

.result-list__item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.8rem;
    padding: 0.95rem 1rem;
}

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

@media (max-width: 719px) {
    .site-header__inner,
    .site-footer__inner {
        flex-wrap: wrap;
    }

    .site-header__tagline,
    .site-header__link,
    .site-footer__copy,
    .site-footer__meta {
        width: 100%;
    }
}

@media (min-width: 720px) {
    .site-main {
        padding: 3.4rem 0 5rem;
    }

    .metric-grid {
        grid-template-columns: repeat(4, minmax(0, 1fr));
    }

    .split-grid {
        grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
    }
}