/* =========================================================
   SearchLab
   PostgreSQL Search Engineering Lab
   ========================================================= */


/* =========================================================
   RESET
   ========================================================= */

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

html {
    scroll-behavior: smooth;
}

body,
h1,
h2,
h3,
p,
blockquote,
pre {
    margin: 0;
}

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

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

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


/* =========================================================
   VARIABLES
   ========================================================= */

:root {
    --bg: #090b10;
    --bg-soft: #0d1017;
    --bg-card: #10141d;
    --bg-card-hover: #141925;

    --surface: #111722;
    --surface-2: #171d29;

    --text: #f4f7fb;
    --text-soft: #bbc4d2;
    --text-muted: #747f91;

    --border: rgba(255, 255, 255, 0.08);
    --border-strong: rgba(255, 255, 255, 0.14);

    --accent: #64d18b;
    --accent-soft: rgba(100, 209, 139, 0.12);
    --accent-border: rgba(100, 209, 139, 0.28);

    --blue: #6aa9ff;
    --yellow: #f5cf63;
    --purple: #a98cff;
    --red: #ff7f8d;

    --container: 1180px;

    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 22px;

    --shadow:
        0 18px 50px rgba(0, 0, 0, 0.28);

    --font-sans:
        Inter,
        ui-sans-serif,
        system-ui,
        -apple-system,
        BlinkMacSystemFont,
        "Segoe UI",
        sans-serif;

    --font-mono:
        "SFMono-Regular",
        Consolas,
        "Liberation Mono",
        Menlo,
        monospace;
}


/* =========================================================
   GLOBAL
   ========================================================= */

body {
    min-height: 100vh;

    background:
        radial-gradient(
            circle at 50% -10%,
            rgba(70, 130, 100, 0.12),
            transparent 32rem
        ),
        var(--bg);

    color: var(--text);

    font-family: var(--font-sans);
    line-height: 1.6;

    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

::selection {
    background: rgba(100, 209, 139, 0.25);
    color: white;
}

.container {
    width: min(
        calc(100% - 40px),
        var(--container)
    );

    margin-inline: auto;
}

code,
kbd,
pre {
    font-family: var(--font-mono);
}

code {
    color: #9be8b7;
}


/* =========================================================
   NAVBAR
   ========================================================= */

.navbar {
    position: sticky;
    top: 0;
    z-index: 100;

    border-bottom: 1px solid var(--border);

    background:
        rgba(9, 11, 16, 0.78);

    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
}

.navbar-content {
    min-height: 72px;

    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.logo {
    font-size: 1.1rem;
    font-weight: 800;
    letter-spacing: -0.04em;
}

.logo span {
    color: var(--accent);
}

.navbar nav {
    display: flex;
    align-items: center;
    gap: 28px;
}

.navbar nav a {
    position: relative;

    color: var(--text-soft);

    font-size: 0.9rem;
    font-weight: 500;

    transition:
        color 160ms ease,
        transform 160ms ease;
}

.navbar nav a:hover {
    color: var(--text);
    transform: translateY(-1px);
}

.navbar nav a::after {
    content: "";

    position: absolute;
    left: 0;
    right: 0;
    bottom: -7px;

    height: 1px;

    background: var(--accent);

    transform: scaleX(0);
    transform-origin: center;

    transition: transform 160ms ease;
}

.navbar nav a:hover::after {
    transform: scaleX(1);
}


/* =========================================================
   HERO
   ========================================================= */

.hero {
    position: relative;

    padding:
        120px 0
        105px;

    overflow: hidden;
}

.hero::before {
    content: "";

    position: absolute;
    inset: 0;

    pointer-events: none;

    background-image:
        linear-gradient(
            rgba(255, 255, 255, 0.018) 1px,
            transparent 1px
        ),
        linear-gradient(
            90deg,
            rgba(255, 255, 255, 0.018) 1px,
            transparent 1px
        );

    background-size: 54px 54px;

    mask-image:
        linear-gradient(
            to bottom,
            rgba(0, 0, 0, 0.8),
            transparent 85%
        );
}

.hero-content {
    position: relative;
    z-index: 1;

    max-width: 930px;
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 10px;

    margin-bottom: 28px;

    padding: 7px 12px;

    border:
        1px solid
        var(--accent-border);

    border-radius: 999px;

    background:
        var(--accent-soft);

    color: var(--accent);

    font-family: var(--font-mono);
    font-size: 0.72rem;
    font-weight: 700;

    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.eyebrow::before {
    content: "";

    width: 7px;
    height: 7px;

    border-radius: 50%;

    background: var(--accent);

    box-shadow:
        0 0 14px
        rgba(100, 209, 139, 0.6);
}

.hero h1 {
    max-width: 900px;

    font-size:
        clamp(3.1rem, 7vw, 6.6rem);

    line-height: 0.98;

    letter-spacing: -0.065em;

    font-weight: 850;
}

.hero h1 span {
    color: var(--text-muted);
}

.hero-description {
    max-width: 760px;

    margin-top: 34px;

    color: var(--text-soft);

    font-size:
        clamp(1rem, 1.7vw, 1.18rem);

    line-height: 1.8;
}

.hero-description code {
    padding:
        3px 7px;

    border:
        1px solid var(--border);

    border-radius: 5px;

    background:
        var(--surface);

    font-size: 0.9em;
}


/* =========================================================
   SEARCH PREVIEW
   ========================================================= */

.search-preview {
    max-width: 760px;

    margin-top: 46px;

    overflow: hidden;

    border:
        1px solid
        var(--border-strong);

    border-radius: var(--radius-md);

    background:
        rgba(17, 23, 34, 0.72);

    box-shadow:
        var(--shadow);
}

.search-bar {
    min-height: 68px;

    padding: 0 18px;

    display: flex;
    align-items: center;
    gap: 14px;

    border-bottom:
        1px solid
        var(--border);
}

.search-bar svg {
    width: 20px;
    height: 20px;

    flex: 0 0 auto;

    fill: none;
    stroke: var(--text-muted);
    stroke-width: 1.8;
    stroke-linecap: round;
}

.search-bar > span {
    flex: 1;

    color: var(--text-soft);

    font-size: 0.96rem;
}

.search-bar kbd {
    flex: 0 0 auto;

    padding:
        4px 7px;

    border:
        1px solid
        var(--border-strong);

    border-radius: 6px;

    background:
        rgba(255, 255, 255, 0.04);

    color:
        var(--text-muted);

    font-size: 0.72rem;

    box-shadow:
        inset 0 -1px
        rgba(255, 255, 255, 0.04);
}

.preview-meta {
    min-height: 46px;

    padding:
        10px 18px;

    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap:
        8px 22px;

    color: var(--text-muted);

    font-family: var(--font-mono);
    font-size: 0.72rem;
}

.preview-meta span {
    position: relative;
}

.preview-meta span:not(:last-child)::after {
    content: "";

    position: absolute;

    right: -12px;
    top: 50%;

    width: 3px;
    height: 3px;

    border-radius: 50%;

    background:
        var(--text-muted);

    transform:
        translateY(-50%);
}


/* =========================================================
   PRIMARY BUTTON
   ========================================================= */

.primary-button {
    display: inline-flex;
    align-items: center;
    gap: 14px;

    margin-top: 36px;

    padding:
        13px 19px;

    border:
        1px solid
        var(--accent-border);

    border-radius:
        var(--radius-sm);

    background:
        var(--accent);

    color: #07120b;

    font-size: 0.88rem;
    font-weight: 800;

    box-shadow:
        0 10px 30px
        rgba(100, 209, 139, 0.12);

    transition:
        transform 160ms ease,
        box-shadow 160ms ease,
        filter 160ms ease;
}

.primary-button:hover {
    transform:
        translateY(-2px);

    box-shadow:
        0 15px 36px
        rgba(100, 209, 139, 0.2);

    filter: brightness(1.04);
}

.primary-button span {
    font-size: 1rem;
}


/* =========================================================
   SECTION DEFAULTS
   ========================================================= */

.versions-section,
.benchmark-section,
.about-section {
    border-top:
        1px solid
        var(--border);
}

.versions-section {
    padding:
        110px 0
        120px;

    background:
        linear-gradient(
            to bottom,
            rgba(255, 255, 255, 0.012),
            transparent
        );
}

.section-heading {
    display: grid;

    grid-template-columns:
        minmax(0, 1fr)
        minmax(280px, 430px);

    align-items: end;
    gap: 60px;

    margin-bottom: 58px;
}

.section-label {
    display: inline-block;

    margin-bottom: 16px;

    color: var(--accent);

    font-family: var(--font-mono);
    font-size: 0.7rem;
    font-weight: 700;

    letter-spacing: 0.13em;
}

.section-heading h2,
.benchmark h2 {
    font-size:
        clamp(2.25rem, 4.6vw, 4.2rem);

    line-height: 1.03;
    letter-spacing: -0.05em;
}

.section-heading > p {
    max-width: 420px;

    color: var(--text-muted);

    font-size: 1rem;
    line-height: 1.8;
}


/* =========================================================
   VERSION CARDS
   ========================================================= */

.version-grid {
    display: grid;

    grid-template-columns:
        repeat(2, minmax(0, 1fr));

    gap: 18px;
}

.version-card {
    position: relative;

    min-height: 310px;

    padding: 28px;

    display: flex;
    flex-direction: column;

    overflow: hidden;

    border:
        1px solid
        var(--border);

    border-radius:
        var(--radius-md);

    background:
        linear-gradient(
            145deg,
            rgba(255, 255, 255, 0.025),
            transparent 44%
        ),
        var(--bg-card);

    transition:
        transform 200ms ease,
        border-color 200ms ease,
        background 200ms ease,
        box-shadow 200ms ease;
}

.version-card::before {
    content: "";

    position: absolute;

    width: 180px;
    height: 180px;

    top: -110px;
    right: -90px;

    border-radius: 50%;

    background:
        rgba(100, 209, 139, 0.08);

    filter: blur(8px);

    opacity: 0;

    transition:
        opacity 200ms ease;
}

.version-card:hover {
    transform:
        translateY(-4px);

    border-color:
        rgba(100, 209, 139, 0.28);

    background:
        linear-gradient(
            145deg,
            rgba(100, 209, 139, 0.045),
            transparent 50%
        ),
        var(--bg-card-hover);

    box-shadow:
        0 24px 60px
        rgba(0, 0, 0, 0.2);
}

.version-card:hover::before {
    opacity: 1;
}

.version-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;

    margin-bottom: 28px;
}

.version-number {
    color: var(--accent);

    font-family:
        var(--font-mono);

    font-size: 0.78rem;
    font-weight: 800;
}

.status {
    padding:
        5px 9px;

    border:
        1px solid
        var(--border);

    border-radius:
        999px;

    color:
        var(--text-muted);

    font-family:
        var(--font-mono);

    font-size:
        0.62rem;

    font-weight: 700;

    letter-spacing:
        0.08em;
}

.version-card h3 {
    margin-bottom: 12px;

    font-size: 1.45rem;

    letter-spacing:
        -0.03em;
}

.version-card > p {
    max-width: 480px;

    color: var(--text-muted);

    line-height: 1.7;

    font-size: 0.92rem;
}

.version-card p code {
    padding: 2px 5px;

    border-radius: 4px;

    background:
        rgba(255, 255, 255, 0.045);

    font-size: 0.9em;
}


/* =========================================================
   TAGS
   ========================================================= */

.tags {
    display: flex;
    flex-wrap: wrap;
    gap: 7px;

    margin-top: 22px;
}

.tags span {
    padding:
        5px 8px;

    border:
        1px solid
        var(--border);

    border-radius: 5px;

    background:
        rgba(255, 255, 255, 0.025);

    color:
        var(--text-muted);

    font-family:
        var(--font-mono);

    font-size:
        0.66rem;
}


/* =========================================================
   CARD LINKS
   ========================================================= */

.version-card > a {
    margin-top: auto;
    padding-top: 25px;

    display: inline-flex;
    align-items: center;
    gap: 10px;

    align-self:
        flex-start;

    color:
        var(--text-soft);

    font-size:
        0.88rem;

    font-weight: 700;

    transition:
        color 160ms ease,
        gap 160ms ease;
}

.version-card > a span {
    color: var(--accent);
}

.version-card > a:hover {
    color: var(--accent);
    gap: 14px;
}


/* =========================================================
   VERSION COLOR VARIATIONS
   ========================================================= */

.version-card[data-version="v2"]
.version-number {
    color: var(--blue);
}

.version-card[data-version="v3"]
.version-number {
    color: var(--yellow);
}

.version-card[data-version="v4"]
.version-number {
    color: var(--purple);
}

.version-card[data-version="v5"]
.version-number {
    color: var(--red);
}

.version-card[data-version="v6"]
.version-number {
    color: #66d7dd;
}

.version-card[data-version="v7"]
.version-number {
    color: #ff9d67;
}

.version-card[data-version="v8"]
.version-number {
    color: #d890ff;
}


/* =========================================================
   BENCHMARK
   ========================================================= */

.benchmark-section {
    padding:
        110px 0;
}

.benchmark {
    display: grid;

    grid-template-columns:
        minmax(0, 0.9fr)
        minmax(430px, 1.1fr);

    align-items: center;

    gap: 80px;
}

.benchmark-controls {
    display: grid;
    gap: 10px;
    margin-top: 28px;
}

.benchmark-controls > label {
    color: var(--text-muted);
    font-size: 0.74rem;
    font-weight: 700;
}

.benchmark-controls > div {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 8px;
}

.benchmark-controls input,
.benchmark-controls button {
    min-height: 46px;
    border-radius: 10px;
}

.benchmark-controls input {
    min-width: 0;
    padding: 0 13px;
    border: 1px solid var(--border);
    outline: none;
    background: var(--bg-card);
    color: var(--text);
}

.benchmark-controls input:focus {
    border-color: var(--accent-border);
    box-shadow: 0 0 0 3px var(--accent-soft);
}

.benchmark-controls button {
    padding: 0 16px;
    border: 1px solid var(--accent-border);
    background: var(--accent-soft);
    color: #c8f3d7;
    font-weight: 750;
    cursor: pointer;
}

.benchmark-controls button:disabled {
    cursor: wait;
    opacity: 0.6;
}

.benchmark-status {
    min-height: 1.4em;
    color: var(--text-muted);
    font-size: 0.76rem;
    line-height: 1.5;
}

.benchmark-status[data-state="error"] {
    color: #ff9eaa;
}


/* =========================================================
   TERMINAL
   ========================================================= */

.terminal {
    overflow: hidden;

    border:
        1px solid
        var(--border-strong);

    border-radius:
        var(--radius-md);

    background:
        #090c11;

    box-shadow:
        0 30px 80px
        rgba(0, 0, 0, 0.32);
}

.terminal-header {
    min-height: 44px;

    padding: 0 14px;

    display: flex;
    align-items: center;
    gap: 8px;

    border-bottom:
        1px solid
        var(--border);

    background:
        rgba(255, 255, 255, 0.025);
}

.terminal-header > span {
    width: 9px;
    height: 9px;

    border-radius: 50%;
}

.terminal-header > span:nth-child(1) {
    background: #ff6b6b;
}

.terminal-header > span:nth-child(2) {
    background: #f5c451;
}

.terminal-header > span:nth-child(3) {
    background: #60c878;
}

.terminal-header p {
    margin-left: 8px;

    color:
        var(--text-muted);

    font-family:
        var(--font-mono);

    font-size:
        0.68rem;
}

.terminal pre {
    overflow-x: auto;

    padding:
        30px;

    color:
        #aeb7c5;

    font-family:
        var(--font-mono);

    font-size:
        0.8rem;

    line-height:
        1.85;

    tab-size: 4;
}

.terminal pre code {
    color: inherit;
}

.benchmark-output {
    padding: 22px;
    font-family: var(--font-mono);
    font-size: 0.74rem;
}

.benchmark-output__meta {
    display: grid;
    grid-template-columns: 58px minmax(0, 1fr);
    gap: 10px;
    padding-bottom: 18px;
    border-bottom: 1px solid var(--border);
}

.benchmark-output__meta span,
.benchmark-output__head {
    color: var(--text-muted);
}

.benchmark-output__meta strong {
    overflow: hidden;
    color: var(--text-soft);
    text-overflow: ellipsis;
    white-space: nowrap;
}

.benchmark-output__head,
.benchmark-output__row {
    display: grid;
    grid-template-columns: minmax(115px, 1.15fr) 0.65fr 0.8fr 0.85fr minmax(105px, 1fr);
    align-items: center;
    gap: 10px;
}

.benchmark-output__head {
    padding: 18px 10px 9px;
    font-size: 0.64rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.benchmark-output__row {
    min-height: 48px;
    padding: 8px 10px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    color: var(--text-soft);
}

.benchmark-output__row strong {
    color: var(--text);
}

.benchmark-output__row small {
    display: block;
    margin-top: 2px;
    color: var(--text-muted);
    font-size: 0.62rem;
    font-weight: 500;
}

.benchmark-output__row[data-state="running"] {
    background: rgba(106, 169, 255, 0.06);
}

.benchmark-output__row[data-state="complete"] [data-field="plan"] {
    color: var(--accent);
}

.benchmark-output__row[data-state="error"] {
    color: #ff9eaa;
}


/* =========================================================
   ABOUT
   ========================================================= */

.about-section {
    padding:
        120px 0;
}

.about {
    max-width:
        950px;
}

.about blockquote {
    max-width:
        900px;

    color:
        var(--text-soft);

    font-size:
        clamp(1.8rem, 4vw, 3.4rem);

    line-height:
        1.22;

    letter-spacing:
        -0.045em;

    font-weight:
        600;
}

.about blockquote strong {
    color:
        var(--text);

    font-weight:
        800;
}


/* =========================================================
   FOOTER
   ========================================================= */

footer {
    border-top:
        1px solid
        var(--border);

    background:
        rgba(255, 255, 255, 0.01);
}

.footer-content {
    min-height:
        100px;

    display:
        flex;

    align-items:
        center;

    justify-content:
        space-between;

    gap:
        20px;
}

.footer-content p {
    color:
        var(--text-muted);

    font-size:
        0.8rem;

    font-family:
        var(--font-mono);
}


/* =========================================================
   ACCESSIBILITY
   ========================================================= */

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

    outline-offset:
        4px;

    border-radius:
        4px;
}


/* =========================================================
   TABLET
   ========================================================= */

@media (max-width: 900px) {

    .hero {
        padding:
            90px 0
            80px;
    }

    .section-heading {
        grid-template-columns:
            1fr;

        gap:
            24px;
    }

    .version-grid {
        grid-template-columns:
            1fr;
    }

    .benchmark {
        grid-template-columns:
            1fr;

        gap:
            48px;
    }

    .terminal {
        width:
            100%;
    }
}


/* =========================================================
   MOBILE
   ========================================================= */

@media (max-width: 640px) {

    .container {
        width:
            min(
                calc(100% - 28px),
                var(--container)
            );
    }

    .navbar-content {
        min-height:
            64px;
    }

    .navbar nav {
        gap:
            16px;
    }

    .navbar nav a {
        font-size:
            0.78rem;
    }

    .navbar nav a:nth-child(2) {
        display:
            none;
    }

    .hero {
        padding:
            76px 0
            70px;
    }

    .hero h1 {
        font-size:
            clamp(
                2.8rem,
                13vw,
                4.2rem
            );
    }

    .hero-description {
        margin-top:
            26px;

        font-size:
            0.96rem;
    }

    .search-preview {
        margin-top:
            34px;
    }

    .search-bar {
        min-height:
            60px;

        padding:
            0 14px;
    }

    .search-bar > span {
        overflow:
            hidden;

        white-space:
            nowrap;

        text-overflow:
            ellipsis;
    }

    .search-bar kbd {
        display:
            none;
    }

    .preview-meta {
        gap:
            8px 14px;
    }

    .preview-meta span::after {
        display:
            none;
    }

    .versions-section,
    .benchmark-section,
    .about-section {
        padding:
            80px 0;
    }

    .version-card {
        min-height:
            290px;

        padding:
            22px;
    }

    .section-heading {
        margin-bottom:
            40px;
    }

    .benchmark {
        gap:
            38px;
    }

    .benchmark-controls > div {
        grid-template-columns: 1fr;
    }

    .benchmark-output {
        padding: 14px;
        overflow-x: auto;
    }

    .benchmark-output__meta,
    .benchmark-output__head,
    .benchmark-output__row {
        min-width: 650px;
    }

    .terminal pre {
        padding:
            22px;

        font-size:
            0.72rem;
    }

    .footer-content {
        min-height:
            88px;

        flex-direction:
            column;

        justify-content:
            center;

        text-align:
            center;

        gap:
            4px;
    }
}


/* =========================================================
   REDUCED MOTION
   ========================================================= */

@media (prefers-reduced-motion: reduce) {

    *,
    *::before,
    *::after {
        scroll-behavior:
            auto !important;

        transition-duration:
            0.01ms !important;

        animation-duration:
            0.01ms !important;

        animation-iteration-count:
            1 !important;
    }
}