/* Study Path (学びの道) — styles specific to path.html.
   "Sumi on washi": a warm paper ground, sumi-ink text and a single saffron marker. Distinct from
   every other page both in palette and, more to the point, in layout: this is the only page built
   as a vertical route with stations hung off a spine, rather than a card grid, a sidebar, a
   toolbar-and-board, or a search list. A roadmap should look like a road.

   Tokens live on .path-main, not :root, so nothing leaks into the shared masthead, footer or the
   light auth modals — same rule the other page themes follow. */

/* Full-bleed body ground: body is an ancestor and cannot read a descendant's custom properties,
   so it gets the single deepest colour directly (see game.css for the same pattern). */
body:has(.path-main) {
    background: #ece8dd;
    background: light-dark(#ece8dd, #100e0a);
}

.path-main {
    --paper: #f4f1e8;
    --paper: light-dark(#f4f1e8, #16140f);
    --paper-raised: #fbf9f4;
    --paper-raised: light-dark(#fbf9f4, #1e1b15);
    --paper-sunk: #ece8dd;
    --paper-sunk: light-dark(#ece8dd, #100e0a);
    --edge: #d9d2c2;
    --edge: light-dark(#d9d2c2, #2f2a20);
    --edge-strong: #bdb39d;
    --edge-strong: light-dark(#bdb39d, #463f31);

    --ink: #1f1c16;
    --ink: light-dark(#1f1c16, #f2ece0);
    --ink-soft: #4d473c;
    --ink-soft: light-dark(#4d473c, #c6bda9);
    --ink-faint: #6f6858;
    --ink-faint: light-dark(#6f6858, #9a917d);

    /* One accent, used only for the stage you are on and the "ready when" band. */
    /* was #9a6410: 4.36:1 on the stage markers and "Start here" chips, under the floor */
    --saffron: #94600f;
    --saffron: light-dark(#94600f, #e0a94a);
    --saffron-bright: #b3761a;
    --saffron-bright: light-dark(#b3761a, #f0c069);
    --saffron-tint: #f6efdf;
    --saffron-tint: light-dark(#f6efdf, #2a2113);

    --spine: #cfc7b4;
    --spine: light-dark(#cfc7b4, #3a3325);
    --done: #3f6b4c;
    --done: light-dark(#3f6b4c, #7fbf9e);

    --font-jp: "Noto Serif JP", "Hiragino Mincho ProN", "Yu Mincho", "MS Mincho", serif;
    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);

    position: relative;
    padding: 89px 40px 72px;
    min-height: 100vh;
    background: var(--paper);
    color: var(--ink);
}

.path-inner {
    max-width: 980px;
    margin: 0 auto;
}

/* ---------------------------------------------------------------------
   Header
   --------------------------------------------------------------------- */
.path-title {
    font-family: 'Fraunces', Georgia, serif;
    font-size: clamp(1.9rem, 3.4vw, 2.6rem);
    margin: 0 0 8px;
    color: var(--ink);
    letter-spacing: -0.01em;
}

.path-title-sub {
    display: block;
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--saffron);
    letter-spacing: 0.04em;
    margin-top: 6px;
}

.path-lede {
    max-width: 64ch;
    color: var(--ink-soft);
    font-size: 1rem;
    line-height: 1.65;
    margin: 0 0 10px;
}

/* The hours caveat. Deliberately a plain note rather than fine print: the figures are other
   people's rules of thumb, and the page should say so where they are first used, not in a
   footnote nobody reads. */
.path-hours-note {
    max-width: 64ch;
    margin: 0 0 34px;
    padding: 12px 16px;
    background: var(--paper-sunk);
    border-left: 3px solid var(--edge-strong);
    font-size: 0.87rem;
    color: var(--ink-faint);
    line-height: 1.55;
}

/* ---------------------------------------------------------------------
   The route
   --------------------------------------------------------------------- */
.path-route {
    position: relative;
    padding-left: 68px;
}

/* The spine. Stops short at both ends so it reads as a route with a beginning and an end
   rather than a rule that runs off the page. */
.path-route::before {
    content: '';
    position: absolute;
    left: 23px;
    top: 14px;
    bottom: 26px;
    width: 2px;
    background: var(--spine);
}

.path-stage {
    position: relative;
    margin-bottom: 30px;
}

.path-marker {
    position: absolute;
    left: -68px;
    top: 0;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: grid;
    place-items: center;
    background: var(--paper);
    border: 2px solid var(--edge-strong);
    font-family: 'Fraunces', Georgia, serif;
    font-weight: 700;
    font-size: 0.95rem;
    color: var(--ink-soft);
    /* Sits over the spine rather than beside it. */
    z-index: 1;
}

.path-marker.jp {
    font-family: var(--font-jp);
    font-size: 0.9rem;
}

/* Stage 0 is the one a visitor with no Japanese should start at, so it is the only one marked. */
.path-stage.is-start .path-marker {
    border-color: var(--saffron-bright);
    background: var(--saffron-tint);
    color: var(--saffron);
}

.path-card {
    border: 1px solid var(--edge);
    background: var(--paper-raised);
    box-shadow: 0 1px 2px rgba(31, 28, 22, 0.04);
}

.path-card-head {
    padding: 18px 24px 15px;
    border-bottom: 1px solid var(--edge);
    display: flex;
    align-items: baseline;
    gap: 12px;
    flex-wrap: wrap;
}

.path-card-head h2 {
    font-family: 'Fraunces', Georgia, serif;
    font-size: 1.3rem;
    font-weight: 600;
    margin: 0;
    color: var(--ink);
}

.path-goal {
    flex-basis: 100%;
    margin: 4px 0 0;
    color: var(--ink-soft);
    font-size: 0.94rem;
}

.path-chip {
    font-size: 0.66rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    padding: 3px 9px;
    border: 1px solid var(--edge-strong);
    color: var(--ink-faint);
}

.path-stage.is-start .path-chip {
    border-color: var(--saffron-bright);
    color: var(--saffron);
    background: var(--saffron-tint);
}

.path-hours {
    margin-left: auto;
    font-size: 0.8rem;
    color: var(--ink-faint);
    font-variant-numeric: tabular-nums;
    white-space: nowrap;
}

/* ---- the steps in a stage ---- */
.path-steps {
    padding: 4px 24px 6px;
    margin: 0;
    list-style: none;
}

.path-step {
    display: grid;
    grid-template-columns: 168px 1fr;
    gap: 18px;
    padding: 14px 0;
    border-bottom: 1px dashed var(--edge);
    align-items: start;
}

.path-step:last-child {
    border-bottom: 0;
}

.path-tool {
    font-weight: 600;
    font-size: 0.93rem;
    color: var(--ink);
    text-decoration: none;
    border-bottom: 1px solid transparent;
}

a.path-tool:hover {
    color: var(--saffron);
    border-bottom-color: var(--saffron);
}

.path-where {
    display: block;
    font-weight: 400;
    font-size: 0.73rem;
    color: var(--ink-faint);
    letter-spacing: 0.05em;
    text-transform: uppercase;
    margin-top: 3px;
    /* Level ranges line up down the column. */
    font-variant-numeric: tabular-nums;
}

.path-what {
    font-size: 0.94rem;
    color: var(--ink-soft);
    line-height: 1.6;
}

.path-what b {
    color: var(--ink);
    font-weight: 600;
}

.path-what .jp {
    font-family: var(--font-jp);
}

/* ---- the check at the end of a stage ---- */
.path-ready {
    margin: 0;
    padding: 14px 24px;
    background: var(--saffron-tint);
    border-top: 1px solid var(--edge);
    font-size: 0.91rem;
    color: var(--ink-soft);
}

.path-ready b {
    font-family: 'Fraunces', Georgia, serif;
    color: var(--saffron);
    font-weight: 600;
}

/* ---------------------------------------------------------------------
   Closing note
   --------------------------------------------------------------------- */
.path-outro {
    margin-top: 40px;
    padding: 22px 24px;
    border: 1px solid var(--edge);
    background: var(--paper-raised);
}

.path-outro h3 {
    font-family: 'Fraunces', Georgia, serif;
    font-size: 1.1rem;
    font-weight: 600;
    margin: 0 0 10px;
}

.path-outro p {
    margin: 0 0 10px;
    color: var(--ink-soft);
    font-size: 0.94rem;
}

.path-outro p:last-child {
    margin-bottom: 0;
}

.path-outro a {
    color: var(--saffron);
}

/* ---------------------------------------------------------------------
   Narrow screens: the spine costs 68px of width that a phone needs more.
   --------------------------------------------------------------------- */
@media (max-width: 700px) {
    .path-main {
        padding: 89px 18px 56px;
    }

    .path-route {
        padding-left: 0;
    }

    .path-route::before {
        display: none;
    }

    .path-marker {
        position: static;
        margin-bottom: -1px;
        border-bottom-left-radius: 0;
        border-bottom-right-radius: 0;
    }

    .path-step {
        grid-template-columns: 1fr;
        gap: 4px;
    }
}

/* The darker theme drops the page to a night version rather than leaving a bright sheet of paper
   in a dark room. Same override shape as the other light pages. */
html[data-contrast="darker"] body:has(.path-main) {
    background: #17150f;
}

html[data-contrast="darker"] .path-main {
    --paper: #1c1a13;
    --paper-raised: #24211a;
    --paper-sunk: #17150f;
    --edge: #3a352a;
    --edge-strong: #56503f;
    --ink: #f2eee2;
    --ink-soft: #c6bfad;
    --ink-faint: #948c78;
    --saffron: #e0a94a;
    --saffron-bright: #e0a94a;
    --saffron-tint: #2e2617;
    --spine: #3a352a;
}