/* HydraTrade homepage. Colours are tokens: light by default, dark from the system or the toggle. */

:root {
    --bg: #f5f5f1;
    --bg-2: #ebece7;
    --ink: #172120;
    --ink-2: #4f5b58;
    --ink-3: #7c8784;
    --rule: #d6dad5;
    --accent: #b8382c;
    --accent-ink: #ffffff;
    --serif: "Newsreader", Georgia, "Times New Roman", serif;
    --sans: "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
    --mono: "IBM Plex Mono", ui-monospace, "DejaVu Sans Mono", monospace;
    color-scheme: light;
}

@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
        --bg: #0d1214;
        --bg-2: #161d20;
        --ink: #e7ebe9;
        --ink-2: #aab3b0;
        --ink-3: #7d8784;
        --rule: #283134;
        --accent: #e5604f;
        --accent-ink: #0d1214;
        color-scheme: dark;
    }
}

:root[data-theme="dark"] {
    --bg: #0d1214;
    --bg-2: #161d20;
    --ink: #e7ebe9;
    --ink-2: #aab3b0;
    --ink-3: #7d8784;
    --rule: #283134;
    --accent: #e5604f;
    --accent-ink: #0d1214;
    color-scheme: dark;
}

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

html {
    -webkit-text-size-adjust: 100%;
    scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }
}

body {
    margin: 0;
    background: var(--bg);
    color: var(--ink);
    font: 400 17px/1.65 var(--sans);
}

a {
    color: inherit;
}

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

.wrap {
    max-width: 1080px;
    margin: 0 auto;
    padding: 0 24px;
}

.skip {
    position: absolute;
    left: -9999px;
}

.skip:focus {
    left: 16px;
    top: 12px;
    z-index: 10;
    background: var(--ink);
    color: var(--bg);
    padding: 8px 12px;
}

/* ------------------------------------------------------------ top bar */

.top {
    border-bottom: 1px solid var(--rule);
}

.top-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    height: 64px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
}

.mark {
    width: 28px;
    height: 21px;
    color: var(--accent);
}

.brand-name {
    font: 600 18px/1 var(--sans);
    letter-spacing: 0.01em;
}

.top-nav {
    display: flex;
    align-items: center;
    gap: 22px;
    font: 500 14px/1 var(--sans);
}

.top-nav a {
    text-decoration: none;
    color: var(--ink-2);
}

.top-nav a:hover {
    color: var(--ink);
}

.theme {
    width: 34px;
    height: 34px;
    border: 1px solid var(--rule);
    border-radius: 50%;
    background: none;
    cursor: pointer;
    display: grid;
    place-items: center;
}

.theme span {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: linear-gradient(90deg, var(--ink) 50%, transparent 50%);
    border: 1.5px solid var(--ink);
}

.theme:hover {
    border-color: var(--ink-3);
}

/* ------------------------------------------------------------ hero */

.hero {
    margin-top: 64px;
}

.kicker {
    margin: 0 0 14px;
    font: 500 12px/1.4 var(--mono);
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--accent);
}

h1 {
    margin: 0;
    font: 600 clamp(48px, 9vw, 104px)/0.98 var(--serif);
    letter-spacing: -0.02em;
}

.dek {
    margin: 18px 0 0;
    max-width: 24ch;
    font: italic 400 clamp(24px, 3.4vw, 34px)/1.25 var(--serif);
    color: var(--ink-2);
}

.hero-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    gap: 48px;
    margin-top: 36px;
    align-items: start;
}

.intro {
    margin: 0;
    max-width: 60ch;
    color: var(--ink-2);
}

.facts {
    margin: 0;
    border-top: 1px solid var(--rule);
}

.facts div {
    display: grid;
    grid-template-columns: 96px 1fr;
    gap: 12px;
    padding: 11px 0;
    border-bottom: 1px solid var(--rule);
    font-size: 15px;
}

.facts dt {
    font: 500 11px/1.9 var(--mono);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--ink-3);
}

.facts dd {
    margin: 0;
}

.hero-art {
    margin: 48px 0 0;
}

.hero-art img {
    width: 100%;
    border-radius: 3px;
}

figcaption {
    margin-top: 8px;
    font-size: 13px;
    color: var(--ink-3);
    text-align: right;
}

/* ------------------------------------------------------------ sections */

.section-head {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.4fr);
    gap: 32px;
    align-items: baseline;
    padding-bottom: 18px;
    border-bottom: 2px solid var(--ink);
    margin-bottom: 32px;
}

.section-head h2,
.next h2 {
    margin: 0;
    font: 600 34px/1.1 var(--serif);
}

.section-head p {
    margin: 0;
    color: var(--ink-2);
}

.reports,
.method {
    margin-top: 88px;
}

/* ------------------------------------------------------------ report cards */

.report-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 40px 32px;
}

.report-link {
    display: flex;
    flex-direction: column;
    height: 100%;
    text-decoration: none;
}

.report-art {
    display: block;
    overflow: hidden;
    border-radius: 3px;
    background: var(--bg-2);
    border: 1px solid var(--rule);
}

.report-art img {
    width: 100%;
    aspect-ratio: 900 / 386;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.report-link:hover .report-art img {
    transform: scale(1.02);
}

.report-body {
    display: flex;
    flex-direction: column;
    flex: 1;
    padding-top: 16px;
}

.report-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 4px 14px;
    font: 500 12px/1.5 var(--mono);
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--ink-3);
}

.report-meta b {
    color: var(--accent);
    font-weight: 500;
}

.report-title {
    display: block;
    margin-top: 8px;
    font: 600 27px/1.18 var(--serif);
}

.report-link:hover .report-title {
    text-decoration: underline;
    text-decoration-thickness: 1px;
    text-underline-offset: 4px;
}

.report-dek {
    display: block;
    margin-top: 10px;
    color: var(--ink-2);
    font-size: 16px;
}

.report-finding {
    display: block;
    margin-top: 14px;
    padding-left: 14px;
    border-left: 2px solid var(--accent);
    font: italic 400 17px/1.5 var(--serif);
}

.report-read {
    margin-top: auto;
    padding-top: 16px;
    font: 500 14px/1 var(--sans);
    color: var(--accent);
}

.report-read::after {
    content: " \2192";
}

/* ------------------------------------------------------------ method */

.rules {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 28px 40px;
    counter-reset: rule;
}

.rules li {
    padding-top: 14px;
    border-top: 1px solid var(--rule);
}

.rules b {
    display: block;
    font: 600 20px/1.3 var(--serif);
    margin-bottom: 6px;
}

.rules span {
    color: var(--ink-2);
    font-size: 16px;
}

/* ------------------------------------------------------------ next */

.next {
    margin-top: 96px;
}

.next-inner {
    padding: 40px 0;
    border-top: 2px solid var(--ink);
}

.next p {
    max-width: 58ch;
    color: var(--ink-2);
}

.button {
    display: inline-block;
    margin-top: 6px;
    padding: 12px 18px;
    background: var(--accent);
    color: var(--accent-ink);
    text-decoration: none;
    font: 500 15px/1 var(--sans);
    border-radius: 3px;
}

.button:hover {
    filter: brightness(1.08);
}

/* ------------------------------------------------------------ footer */

.foot {
    margin-top: 64px;
    border-top: 1px solid var(--rule);
    background: var(--bg-2);
}

.foot-inner {
    padding-top: 28px;
    padding-bottom: 36px;
    display: grid;
    gap: 6px;
    font-size: 14px;
    color: var(--ink-2);
}

.foot-inner p {
    margin: 0;
}

.foot-brand a {
    font-weight: 600;
    color: var(--ink);
    text-decoration: none;
}

.foot-note {
    color: var(--ink-3);
}

/* ------------------------------------------------------------ small screens */

@media (max-width: 820px) {
    .hero-grid,
    .section-head {
        grid-template-columns: 1fr;
        gap: 22px;
    }

    .report-list,
    .rules {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 520px) {
    body {
        font-size: 16px;
    }

    .wrap {
        padding: 0 16px;
    }

    .top-nav {
        gap: 14px;
        font-size: 13px;
    }

    .top-nav a[href^="https"] {
        display: none;
    }

    .hero {
        margin-top: 40px;
    }

    .reports,
    .method {
        margin-top: 64px;
    }

    .report-title {
        font-size: 24px;
    }
}