html {
    /* Accent color will arrive in Step 2.4; keep slot reserved */
    --color-accent: oklch(65% 50% 0);
    accent-color: var(--color-accent);
    color-scheme: light dark; /* allow UA to switch backgrounds/text */
}

h1 {
    font-size: 400%;
    margin: 0.25em 0 0.5em;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    line-height: 1.1;
    text-wrap: balance;
}

body {
    font: 100%/1.5 system-ui;
    /* Step 1: keep content readable */
    max-width: 100ch;
    /* scales with font size */
    margin-inline: max(1em, (100% - 100ch) / 2);
    /* centered & gutters on small screens */
    padding-inline: 0;
    /* we rely on margin math above */
    margin-block: 0;
}

nav ul,
nav li {
    display: contents;
}

nav {
    display: flex;
    align-items: center;
    /* NEW: vertically center items */
    gap: 0.5rem;
    /* small gap between items */
    margin-block-end: 1rem;
    --border-color: oklch(50% 10% 200 / 40%);
    border-bottom: 1px solid var(--border-color);
}

nav a {
    flex: 1 1 0;
    /* equal width for each link */
    display: block;
    /* ensures padding fills the flex area */
    text-decoration: none;
    /* remove underline */
    color: inherit;
    /* inherit text color */
    text-align: center;
    /* center labels */
    padding: 0.5em;
    /* tappable area */
}

/* Highlight the current page link with a thick bottom border and adjusted padding */
nav a.current {
    /*border-bottom: 0.4em solid oklch(80% 3% 200);*/
    border-bottom: 0.4em solid var(--border-color);
    padding-bottom: calc(0.5em - 0.4em);
}

nav a:hover {
    border-bottom: 0.4em solid var(--color-accent);
    padding-bottom: calc(0.5em - 0.4em);
    /* Mix accent with the UA "canvas" color so it works in light/dark */
    background-color: color-mix(in oklch, var(--color-accent), canvas 85%);
    /* very light tint, same hue */
}

/* Small, nice-to-have touches that don’t conflict with the lab’s ask */
img {
    max-width: 100%;
    height: auto;
    display: block;
}

header,
main,
footer {
    max-width: 100ch;
    margin: 1.5rem auto;
}

nav a {
    margin-right: 0.75rem;
}

figure {
    margin: 1rem 0;
}

input,
textarea,
button {
    font: inherit;
    /* inherit font family + size + line-height */
}

form label {
    display: grid;
    grid-template-columns: subgrid;
    /* adopt parent columns */
    grid-column: 1 / -1;
    /* each label group spans both columns */
}

form input,
form textarea,
form button {
    display: block;
    width: 100%;
    box-sizing: border-box;
}

form {
    display: grid;
    grid-template-columns: auto 1fr;
    /* label column sized to text; field column takes rest */
    gap: 1em;
}

/* Inputs & textareas occupy the second column; the label text sits in the first */
form label>input,
form label>textarea {
    grid-column: 2;
}

/* Button spans full width */
form button {
    grid-column: 1 / -1;
}

form label>textarea {
    grid-column: 2;
    width: 100%;
    box-sizing: border-box;
    padding: 0.55rem 0.6rem;
    /* comfortable hit area */
    border: 1px solid color-mix(in oklch, canvastext, canvas 70%);
    border-radius: 0.5rem;
}

/* Textarea breathing room */
form label>textarea {
    min-height: 9rem;
    resize: vertical;
    line-height: 1.4;
}

/* Make the button a normal size and align left under the fields */
form button {
    grid-column: 2;
    /* sit under the inputs (right column) */
    justify-self: start;
    /* shrink to content size */
    padding: 0.55rem 0.9rem;
    border: 1px solid color-mix(in oklch, canvastext, canvas 70%);
    border-radius: 0.5rem;
    background: color-mix(in oklch, var(--color-accent), canvas 85%);
    cursor: pointer;
}

.projects {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(15em, 1fr));
    gap: 1em;
    margin-block: 1.5rem;
    grid-auto-rows: auto;
}

.projects article {
    border: 1px solid oklch(90% 3% 200);
    padding: 1em;
    display: grid;
    grid-row: span 3;
    /* each card occupies 3 rows in the parent grid */
    grid-template-rows: subgrid;
    /* adopt the parent’s row tracks */
    gap: 0.75em;
}

.projects article .proj-text {
    display: grid;
    gap: 0.25rem;
}

/* .projects article {
    border: 1px solid oklch(90% 3% 200);
    padding: 1em;
    display: flex;
    flex-direction: column;
    gap: 0.75em;
} */

/* make sure images never overlap text */
.projects article img {
    display: block;
    width: 100%;
    height: auto;
}

.proj-year {
    opacity: 0.7;
    font-variant-numeric: oldstyle-nums;
    font-family: ui-serif, Georgia, "Times New Roman", Times, serif;
    /* Baskerville fallback vibe */
}

.projects h2 {
    margin: 0;
}

#projects-pie-plot {
    max-width: 20em;
    margin-block: 1.5em;
    overflow: visible;
}

.pie-legend {
    display: flex;
    align-items: flex-start;
    gap: 1.25rem;
    flex-wrap: wrap;
    /* responsive */
}

.legend {
    list-style: none;
    padding: 0.75rem;
    margin: 0.5rem 0 0;
    border: 1px solid color-mix(in oklch, canvastext, canvas 70%);
    border-radius: 0.5rem;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(9em, 1fr));
    gap: 0.75rem 1rem;
    flex: 1 1 16rem;
}

.legend li {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.legend .swatch {
    display: inline-block;
    width: 1rem;
    aspect-ratio: 1 / 1;
    border-radius: 0.25rem;
    background: var(--color);
    border: 1px solid color-mix(in oklch, canvastext, canvas 70%);
}

#projects-pie-plot path {
    transition: 300ms;
    cursor: pointer;
}

/* Hover fade: only dim others when a path is hovered */
#projects-pie-plot:has(path:hover) path:not(:hover) {
    opacity: 0.5;
}

/* Selected style overrides --color & fill */
.selected {
    --color: oklch(60% 45% 0) !important;
}

#projects-pie-plot path.selected {
    fill: var(--color) !important;
}

.legend li.selected .swatch {
    background: var(--color) !important;
}


.cv section {
    padding-block: 1rem;
    border-block-end: 1px solid oklch(92% 3% 200);
}

.cv section:last-of-type {
    border-block-end: 0;
}

.cv h2 {
    font-size: 160%;
    margin-block: 0 0.5rem;
}

.cv article {
    margin-block: 0.75rem 1rem;
}

.cv time {
    font-variant-numeric: tabular-nums;
    opacity: 0.8;
}

/* Theme switcher placement */
.color-scheme {
    position: static;
    /* remove absolute */
    margin-left: auto;
    /* push to right edge */
    flex: 0 0 auto;
    /* don't grow, don't shrink */
    font-size: 80%;
    background: color-mix(in oklch, canvas, canvastext 2%);
    padding: 0.4rem 0.6rem;
    border: 1px solid color-mix(in oklch, canvastext, canvas 70%);
    border-radius: 0.5rem;
}

/* Ensure form controls inherit typography (from Lab 2 + include select) */
input,
textarea,
button,
select {
    font: inherit;
}

#profile-stats {
    margin-block: 1.5rem;
    padding: 0.75rem 1rem;
    border: 1px solid color-mix(in oklch, canvastext, canvas 70%);
    border-radius: 0.5rem;
}

#profile-stats .stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.6rem 1rem;
    margin: 0;
}

#profile-stats dt {
    grid-row: 1;
    font-weight: 600;
}

#profile-stats dd {
    grid-row: 2;
    margin: 0;
    opacity: 0.9;
    font-variant-numeric: tabular-nums;
}

dl.stats {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 0.25rem 1.5rem;
    margin-block: 1rem;
}

dl.stats dt {
    font-weight: 600;
    opacity: 0.7;
}

dl.stats dd {
    margin: 0;
}

/* Tooltip-style <dl> */
dl.info {
    display: grid;
    grid-template-columns: max-content 1fr;
    column-gap: 0.5rem;
    row-gap: 0.25rem;
    margin: 0;
    padding: 0.75rem 1rem;
    border-radius: 0.5rem;
    background-color: rgba(255, 255, 255, 0.9);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
    font-size: 0.9rem;
}

dl.info dt {
    font-weight: 600;
    opacity: 0.7;
}

dl.info dd {
    margin: 0;
}

.tooltip {
    position: fixed;
    z-index: 10;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.tooltip[hidden]:not(:hover, :focus-within) {
    opacity: 0;
    visibility: hidden;
}

/* Scatterplot dots & gridlines */
#chart svg {
    max-width: 100%;
    height: auto;
}

.gridlines line {
    stroke: currentColor;
    stroke-opacity: 0.15;
}

circle {
    transition: 200ms;
    transform-origin: center;
    transform-box: fill-box;

    @starting-style {
        r: 0;
    }
}

circle:hover {
    transform: scale(1.5);
}

/* Selected dots via brush */
circle.selected {
    fill: #ff6b6b;
}

/* Brush selection rectangle */
.selection {
    fill-opacity: 0.1;
    stroke: black;
    stroke-opacity: 0.7;
    stroke-dasharray: 5 3;
    animation: marching-ants 2s linear infinite;
}

@keyframes marching-ants {
    to {
        stroke-dashoffset: -8;
    }
}

.commit-filter {
    display: flex;
    align-items: baseline;
    gap: 0.75rem;
    margin-block: 0.5rem 0.75rem;
    font-size: 0.95rem;
}

.commit-filter label {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex: 1;
}

.commit-filter time {
    margin-left: auto;
    font-variant-numeric: tabular-nums;
    opacity: 0.8;
}

#files {
    display: grid;
    grid-template-columns: 1fr 4fr;
    gap: 0.5rem 1.5rem;
    margin-block: 1.5rem;
}

#files>div {
    grid-column: 1 / -1;
    display: grid;
    grid-template-columns: subgrid;
}

#files dt {
    grid-column: 1;
}

#files dd {
    grid-column: 2;
    display: flex;
    flex-wrap: wrap;
    align-items: flex-start;
    align-content: flex-start;
    gap: 0.15em;
    padding-top: 0.6em;
    margin: 0;
}

#files dt small {
    display: block;
    font-size: 0.8em;
    opacity: 0.7;
    margin-top: 0.15em;
}

/* individual “line” dot – color will be overridden via --color later */
.loc {
    display: flex;
    width: 0.5em;
    aspect-ratio: 1;
    background: var(--color, steelblue);
    border-radius: 50%;
}

#contrib-heatmap {
    margin-block: 1.5rem;
    padding: 0.75rem 1rem;
    border: 1px solid color-mix(in oklch, canvastext, canvas 70%);
    border-radius: 0.5rem;
    overflow-x: auto;
    /* in case SVG is wider */
}

/* === Scrollytelling layout for Meta page === */

#scrolly-1 {
    position: relative;
    display: flex;
    gap: 2rem;
    align-items: flex-start;
    margin-block: 2rem;
}

/* Left column: narrative text (a bit narrower) */
#scatter-story {
    position: relative;
    flex: 0 0 38%;
    /* ~40% of the width */
    max-width: 40ch;
}

#scatter-story .step {
    margin-bottom: 4rem;
    line-height: 1.6;
}

/* Right column: sticky chart + selection + files (wider) */
#scatter-plot {
    position: sticky;
    top: 0;
    left: 0;
    height: 90vh;
    /* taller sticky area so chart + files breathe */
    flex: 1 1 0;
    /* take the rest of the space */
    display: flex;
    flex-direction: column;
}

#scatter-plot h2 {
    margin-top: 0;
}

#scatter-plot #chart {
    flex: 1;
    margin-block: 0.75rem 1rem;
}

/* File unit viz within the sticky column */
#files {
    display: grid;
    grid-template-columns: 1fr 4fr;
    gap: 0.5rem 1.5rem;
    margin-block: 0.5rem 0;

    /* NEW: prevent it from endlessly pushing down */
    max-height: 200rem;
    /* tweak to taste (e.g., 14rem, 20rem, etc.) */
    overflow-y: auto;
    padding-right: 0.25rem;
    /* breathing room so scrollbar doesn’t cover dots */
}

#files>div {
    grid-column: 1 / -1;
    display: grid;
    grid-template-columns: subgrid;
}

#files dt {
    grid-column: 1;
}

#files dd {
    grid-column: 2;
    display: flex;
    flex-wrap: wrap;
    align-items: flex-start;
    align-content: flex-start;
    gap: 0.15em;
    padding-top: 0.6em;
    margin: 0;
}

#files dt small {
    display: block;
    font-size: 0.8em;
    opacity: 0.7;
    margin-top: 0.15em;
}

/* Unit dots for file viz */
.loc {
    display: flex;
    width: 0.5em;
    aspect-ratio: 1;
    background: var(--color, steelblue);
    border-radius: 50%;
}

/* Slightly more compact on very small screens */
@media (max-width: 800px) {
    #scrolly-1 {
        flex-direction: column;
    }

    #scatter-story {
        flex-basis: auto;
        max-width: 100%;
    }

    #scatter-plot {
        position: static;
        height: auto;
    }
}