/*
 * panefile.app
 *
 * Static CSS, no build step, no JavaScript. Light and dark come from
 * prefers-color-scheme alone — there is no toggle, because a toggle needs
 * JavaScript to persist and a page that forgets your choice on every navigation
 * is worse than one that simply follows the system.
 *
 * The palettes are the application's own macOS Light and Catppuccin Mocha
 * themes, so the site and the thing it describes look like each other.
 */

:root {
    /* macOS Light — data/themes/macos-light.toml */
    --bg: #ffffff;
    --surface: #f5f5f7;
    --raised: #ffffff;
    --text: #1d1d1f;
    --subtext: #6e6e73;
    --overlay: #8e8e93;
    --accent: #007aff;
    --border: #d2d2d7;

    --directory: #007aff;
    --executable: #1f9e39;
    --symlink: #3f8ea8;
    --archive: #c46a00;
    --image: #a07c00;

    --shadow: 0 1px 3px rgb(0 0 0 / 6%), 0 8px 24px rgb(0 0 0 / 6%);

    --measure: 34rem;
    --radius: 10px;

    --mono: ui-monospace, "SF Mono", "JetBrains Mono", "Cascadia Code", Menlo,
        Consolas, monospace;
    --sans: -apple-system, BlinkMacSystemFont, "Inter", "Segoe UI", Roboto,
        "Helvetica Neue", Arial, sans-serif;
}

@media (prefers-color-scheme: dark) {
    :root {
        /* Catppuccin Mocha — data/themes/catppuccin-mocha.toml */
        --bg: #1e1e2e;
        --surface: #181825;
        --raised: #313244;
        --text: #cdd6f4;
        --subtext: #a6adc8;
        --overlay: #6c7086;
        --accent: #89b4fa;
        --border: #45475a;

        --directory: #89b4fa;
        --executable: #a6e3a1;
        --symlink: #94e2d5;
        --archive: #fab387;
        --image: #f9e2af;

        --shadow: 0 1px 3px rgb(0 0 0 / 30%), 0 12px 32px rgb(0 0 0 / 35%);
    }
}

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

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

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: var(--sans);
    font-size: 17px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

a {
    color: var(--accent);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

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

/* ------------------------------------------------------------------ layout */

.wrap {
    max-width: 62rem;
    margin: 0 auto;
    padding: 0 1.5rem;
}

section {
    padding: 4.5rem 0;
    border-top: 1px solid var(--border);
}

section:first-of-type {
    border-top: 0;
}

h1,
h2,
h3 {
    line-height: 1.2;
    letter-spacing: -0.02em;
    margin: 0 0 0.6rem;
}

h2 {
    font-size: 1.8rem;
}

h3 {
    font-size: 1.05rem;
    margin-top: 0;
}

p {
    margin: 0 0 1rem;
    max-width: var(--measure);
}

.lede {
    font-size: 1.15rem;
    color: var(--subtext);
}

/* -------------------------------------------------------------------- nav */

header.site {
    position: sticky;
    top: 0;
    z-index: 10;
    background: color-mix(in srgb, var(--bg) 88%, transparent);
    backdrop-filter: saturate(180%) blur(12px);
    border-bottom: 1px solid var(--border);
}

header.site .wrap {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    height: 3.25rem;
}

.brand {
    font-weight: 600;
    letter-spacing: -0.02em;
    color: var(--text);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* The application's own icon, data/icons/panefile.svg, copied verbatim rather
   than redrawn — a wordmark that differs from the icon in the Dock is worse
   than no wordmark. */
.brand .mark {
    display: block;
    width: 24px;
    height: 24px;
}

header.site nav {
    margin-left: auto;
    display: flex;
    gap: 1.25rem;
    font-size: 0.9rem;
}

header.site nav a {
    color: var(--subtext);
}

header.site nav a:hover {
    color: var(--text);
    text-decoration: none;
}

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

.hero {
    padding: 5rem 0 3.5rem;
}

.hero h1 {
    font-size: clamp(2.4rem, 6vw, 3.6rem);
    margin-bottom: 1rem;
}

.hero .lede {
    font-size: 1.25rem;
    max-width: 40rem;
}

.cta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: 2rem;
}

.button {
    display: inline-block;
    padding: 0.6rem 1.1rem;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text);
    background: var(--raised);
}

.button:hover {
    text-decoration: none;
    border-color: var(--overlay);
}

.button.primary {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
}

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

/* ------------------------------------------------------------- screenshot */

.shot {
    display: block;

    /* Less than it looks: the screenshot carries about 60px of transparent
       margin of its own, for the shadow to fall into. */
    margin-top: 1.5rem;
}

/* No border, radius or shadow here.
   The screenshot is drawn inside a macOS window frame — rounded corners,
   hairline and shadow included — so anything added here is a second frame
   around the first. Worse, the image is transparent around that window, so a
   CSS border drew a hard rectangle out in the margin, well clear of the corners
   it was supposed to be following. */
.shot img {
    display: block;
    width: 100%;
    height: auto;
}

/* ------------------------------------------------------------------- grids */

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
    gap: 1.5rem 2rem;
    margin-top: 2.5rem;
}

.grid p {
    margin: 0;
    color: var(--subtext);
    font-size: 0.95rem;
    max-width: none;
}

.card {
    padding: 1.25rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--surface);
}

/* -------------------------------------------------------------- walkthrough */

.walkthrough {
    counter-reset: step;
    list-style: none;
    margin: 2.5rem 0 0;
    padding: 0;
    display: grid;
    gap: 0.25rem;
}

.walkthrough li {
    position: relative;
    padding: 0.85rem 0 0.85rem 3rem;
    border-top: 1px solid var(--border);
}

.walkthrough li:last-child {
    border-bottom: 1px solid var(--border);
}

.walkthrough li::before {
    counter-increment: step;
    content: counter(step);
    position: absolute;
    left: 0;
    top: 0.85rem;
    width: 1.7rem;
    height: 1.7rem;
    border-radius: 50%;
    background: var(--surface);
    border: 1px solid var(--border);
    color: var(--subtext);
    font-size: 0.8rem;
    font-variant-numeric: tabular-nums;
    display: grid;
    place-items: center;
}

.walkthrough span {
    display: block;
    margin-top: 0.3rem;
    color: var(--subtext);
    font-size: 0.92rem;
    max-width: 44rem;
}

.walkthrough code,
.aside code {
    padding: 0.05rem 0.3rem;
    border-radius: 4px;
    background: var(--surface);
    font-size: 0.85em;
}

.aside {
    margin-top: 2rem;
    color: var(--subtext);
    max-width: 44rem;
}

/* -------------------------------------------------------------------- keys */

kbd {
    display: inline-block;
    min-width: 1.6rem;
    padding: 0.1rem 0.4rem;
    border: 1px solid var(--border);
    border-bottom-width: 2px;
    border-radius: 5px;
    background: var(--raised);
    font-size: 0.8rem;
    text-align: center;
    color: var(--text);
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 2rem;
    font-size: 0.95rem;
}

th,
td {
    padding: 0.5rem 0.75rem;
    text-align: left;
    border-bottom: 1px solid var(--border);
    vertical-align: top;
}

th {
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--subtext);
    font-weight: 600;
}

td:first-child {
    white-space: nowrap;
    width: 1%;
}

td .desc {
    color: var(--subtext);
}

.table-scroll {
    overflow-x: auto;
}

/* -------------------------------------------------------------------- code */

pre {
    margin: 1.5rem 0 0;
    padding: 1rem 1.15rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--surface);
    overflow-x: auto;
    font-size: 0.85rem;
    line-height: 1.7;
}

pre .c {
    color: var(--overlay);
}

pre .p {
    color: var(--accent);
}

/* ------------------------------------------------------------------ swatch */

.themes {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
    margin-top: 2rem;
}

.theme {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.4rem 0.7rem 0.4rem 0.5rem;
    border: 1px solid var(--border);
    border-radius: 999px;
    font-size: 0.85rem;
    color: var(--subtext);
}

.theme .chips {
    display: flex;
}

.theme .chips i {
    width: 11px;
    height: 11px;
    border-radius: 50%;
    border: 1px solid var(--bg);
    margin-right: -4px;
}

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

footer.site {
    padding: 3rem 0 4rem;
    border-top: 1px solid var(--border);
    color: var(--subtext);
    font-size: 0.9rem;
}

footer.site p {
    max-width: none;
}

/* ------------------------------------------------------------------ narrow */

@media (max-width: 46rem) {
    body {
        font-size: 16px;
    }

    section {
        padding: 3rem 0;
    }

    /* The sidebar and the third panel are the first things a narrow window
       loses in the application too (§7.1), so the mock loses them here. */
    .panes {
        grid-template-columns: 1fr;
    }

    .panes .pane:not(.focused) {
        display: none;
    }

    header.site nav {
        gap: 0.9rem;
        font-size: 0.85rem;
    }
}

@media (max-width: 30rem) {
    /*
     * Five links plus the wordmark do not fit on a phone. The three section
     * links go rather than being allowed to overflow: the sections they point
     * at are reachable by scrolling, which on a page this length is no worse,
     * and Install and GitHub are the two a visitor actually came for.
     */
    header.site nav a[href="#panels"],
    header.site nav a[href="#keys"],
    header.site nav a[href="#themes"] {
        display: none;
    }
}

@media (prefers-reduced-motion: no-preference) {
    html {
        scroll-behavior: smooth;
    }
}