:root {
    --bg-0: #0b0f13;
    --bg-1: #10161c;
    --line: rgba(148, 170, 186, 0.16);
    --grid: rgba(148, 170, 186, 0.05);
    --text: #dbe3ea;
    --dim: #8b98a5;
    --ch1: #f2b63d;
    --ch2: #4fc3dc;
    --ch3: #d76bd0;
    --contour-rgb: 108, 138, 158;
    --font-display: 'Chakra Petch', 'Segoe UI', sans-serif;
    --font-body: 'IBM Plex Sans', system-ui, sans-serif;
    --font-mono: 'IBM Plex Mono', ui-monospace, monospace;
}

* {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    min-height: 100%;
}

body {
    background-color: var(--bg-0);
    background-image:
        linear-gradient(var(--grid) 1px, transparent 1px),
        linear-gradient(90deg, var(--grid) 1px, transparent 1px);
    background-size: 56px 56px;
    color: var(--text);
    font-family: var(--font-body);
    overflow-x: hidden;
}

::selection {
    background: var(--ch1);
    color: #14100a;
}

#bg-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 0;
    pointer-events: none;
    display: block;
}

a:focus-visible,
summary:focus-visible {
    outline: 2px solid var(--ch2);
    outline-offset: 3px;
}

.page_shell {
    position: relative;
    z-index: 1;
    max-width: 1020px;
    margin: 0 auto;
    padding: clamp(28px, 5vh, 56px) clamp(24px, 6vw, 56px) 64px;
}

/* ------------------------------------------------------------ status bar */

.status_bar {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: baseline;
    gap: 6px 24px;
    border-bottom: 1px solid var(--line);
    padding-bottom: 14px;
    margin-bottom: clamp(48px, 8vh, 88px);
}

.brand {
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--dim);
    text-decoration: none;
    transition: color 0.18s ease;
}

.brand:hover {
    color: var(--ch1);
}

.nav_links {
    display: flex;
    gap: 22px;
}

.nav_link {
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--dim);
    text-decoration: none;
    transition: color 0.18s ease;
}

.nav_link:hover {
    color: var(--ch2);
}

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

.eyebrow {
    font-family: var(--font-mono);
    font-size: 12px;
    letter-spacing: 0.08em;
    color: var(--dim);
    margin: 0 0 14px;
}

.hero_title {
    font-family: var(--font-display);
    font-weight: 600;
    font-size: clamp(2.2rem, 7vw, 3.8rem);
    line-height: 1.05;
    letter-spacing: 0.03em;
    text-transform: uppercase;
    margin: 0 0 16px;
    min-height: 1.1em;
}

.typing_cursor {
    display: inline-block;
    width: 0.5em;
    height: 0.92em;
    margin-left: 8px;
    vertical-align: -0.06em;
    background: var(--ch1);
    animation: blink 1.1s steps(1) infinite;
}

@keyframes blink {
    50% { opacity: 0; }
}

.hero_description {
    max-width: 56ch;
    font-size: 1rem;
    line-height: 1.6;
    color: var(--dim);
    margin: 0 0 14px;
}

.stats_line {
    font-family: var(--font-mono);
    font-size: 11.5px;
    letter-spacing: 0.08em;
    color: var(--ch1);
    margin: 0;
}

/* --------------------------------------------------------------- run log */

.work_section {
    margin-top: clamp(44px, 7vh, 72px);
}

.log_section {
    margin-bottom: clamp(48px, 8vh, 80px);
}

.log_head {
    font-family: var(--font-mono);
    font-size: 12px;
    font-weight: 400;
    letter-spacing: 0.08em;
    color: var(--dim);
    margin: 0 0 6px;
}

.log_list {
    border-top: 1px solid var(--line);
}

.run_row {
    border-bottom: 1px solid var(--line);
}

.run_row summary {
    list-style: none;
    display: grid;
    grid-template-columns: 64px minmax(0, 1fr) auto 22px;
    align-items: baseline;
    gap: 4px 16px;
    padding: 13px 10px 13px 6px;
    cursor: pointer;
    transition: background-color 0.15s ease;
}

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

.run_row summary:hover {
    background: rgba(148, 170, 186, 0.05);
}

.run_row[open] {
    background: var(--bg-1);
    border-left: 2px solid var(--sec-ch, var(--ch1));
}

.run_row[open] summary {
    padding-left: 8px;
}

.run_id {
    font-family: var(--font-mono);
    font-size: 10.5px;
    letter-spacing: 0.08em;
    color: var(--sec-ch, var(--ch1));
    white-space: nowrap;
}

.run_main {
    min-width: 0;
}

.run_title {
    font-family: var(--font-body);
    font-size: 0.97rem;
    font-weight: 500;
    color: var(--text);
    margin: 0;
    line-height: 1.4;
    transition: color 0.15s ease;
}

.run_row summary:hover .run_title {
    color: var(--sec-ch, var(--ch1));
}

.run_tags {
    display: flex;
    flex-wrap: wrap;
    gap: 5px;
    margin-top: 7px;
}

.run_row[open] summary .run_tags {
    display: none;
}

.tag {
    font-family: var(--font-mono);
    font-size: 9.5px;
    letter-spacing: 0.06em;
    color: var(--dim);
    border: 1px solid var(--line);
    border-radius: 3px;
    padding: 2px 7px;
    white-space: nowrap;
}

.run_date {
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.08em;
    color: var(--dim);
    white-space: nowrap;
}

.run_toggle {
    font-family: var(--font-mono);
    font-size: 14px;
    color: var(--dim);
    text-align: center;
    transition: transform 0.18s ease, color 0.18s ease;
}

.run_row[open] .run_toggle {
    transform: rotate(45deg);
    color: var(--sec-ch, var(--ch1));
}

.run_body {
    padding: 2px 18px 18px 88px;
}

.run_desc {
    max-width: 74ch;
    font-size: 0.92rem;
    line-height: 1.65;
    color: var(--dim);
    margin: 0 0 12px;
}

.run_body .run_tags {
    margin: 0 0 12px;
}

.run_link {
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--ch2);
    text-decoration: none;
}

.run_link:hover {
    text-decoration: underline;
}

.log_error {
    font-family: var(--font-mono);
    font-size: 13px;
    color: var(--dim);
    padding: 24px 0;
}

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

.site_footer {
    margin-top: clamp(72px, 12vh, 128px);
    border-top: 1px solid var(--line);
    padding-top: 22px;
}

.legend_links {
    display: flex;
    flex-wrap: wrap;
    gap: 12px 26px;
    margin: 4px 0 18px;
}

.legend_row {
    display: inline-flex;
    align-items: center;
    gap: 9px;
    color: var(--text);
    text-decoration: none;
    transition: color 0.18s ease;
}

.legend_row:hover {
    color: var(--ch2);
}

.legend_row span {
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.foot_note {
    font-family: var(--font-mono);
    font-size: 10.5px;
    letter-spacing: 0.06em;
    color: var(--dim);
    margin: 0;
}

/* ------------------------------------------------------------- responsive */

@media (max-width: 640px) {
    .run_row summary {
        grid-template-columns: minmax(0, 1fr) auto 20px;
        gap: 4px 12px;
    }

    .run_id {
        grid-column: 1 / -1;
    }

    .run_body {
        padding: 2px 12px 16px 8px;
    }
}

@media (prefers-reduced-motion: reduce) {
    .typing_cursor {
        animation: none;
    }

    .run_toggle {
        transition: none;
    }
}