/* Learn view — third view mode alongside list and map (replaces the stats dashboard in the
   view cycle, 2026-09-08). Themed via the CSS variables in theme.css.
   Design rule (see EDITORIAL_LOG 2026-09-08): nothing here encodes a case COUNT across
   categories — no sorted bars, no proportional widths. Tiles are equal; the only thing a bar
   encodes is how one phase's own cases ended. */

#learn-container { display: none; }
#learn-container.visible {
    display: block;
    max-width: 1100px;
    margin: 0 auto;
    padding: 1rem 1rem calc(70px + 1.5rem);
}
@media (min-width: 800px) {
    #learn-container.visible { padding: calc(60px + 1.5rem) 1.5rem 1.5rem; }
}

:root {
    --learn-fatal: #b3323f;
    --learn-injury: #d08a1c;
    --learn-none: #8a97a6;
    --learn-tint: rgba(127, 127, 127, 0.10);
}

.learn-scope {
    display: flex; flex-wrap: wrap; gap: 0.4rem 1rem; align-items: baseline;
    font-size: 0.9rem; color: var(--text-secondary); margin: 0 0 0.75rem;
}
.learn-scope a { color: var(--link-color, var(--primary-accent)); }

.learn-contract {
    border: 1px solid var(--border-color);
    border-left: 4px solid var(--primary-accent);
    border-radius: 6px;
    padding: 0.75rem 1rem;
    margin: 0 0 1.25rem;
    font-size: 0.93rem;
    line-height: 1.5;
    color: var(--text-primary);
    background: var(--card-bg);
}
.learn-contract p { margin: 0.25rem 0; }
.learn-contract strong { font-weight: 600; }

.learn-section { margin: 1.75rem 0 0; }
.learn-section > h2 {
    font-size: 1.25rem; font-weight: 600; margin: 0 0 0.25rem; color: var(--text-primary);
}
.learn-section > .learn-sub {
    margin: 0 0 0.9rem; font-size: 0.88rem; color: var(--text-secondary);
}

/* ---- Panel 1: tiles along the flight ---- */
.learn-seq {
    font-size: 0.72rem; letter-spacing: 0.1em; text-transform: uppercase;
    color: var(--text-secondary); margin: 0.9rem 0 0.4rem;
}
.learn-tiles { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 0.6rem; }
.learn-tile {
    text-align: left; font: inherit; color: var(--text-primary);
    background: var(--card-bg); border: 1px solid var(--border-color); border-radius: 8px;
    padding: 0.6rem 0.7rem 0.7rem; cursor: pointer;
    transition: border-color 0.15s, box-shadow 0.15s;
}
.learn-tile:hover { border-color: var(--primary-accent); }
.learn-tile:focus-visible { outline: 2px solid var(--primary-accent); outline-offset: 2px; }
.learn-tile.active { border-color: var(--primary-accent); box-shadow: inset 0 0 0 1px var(--primary-accent); }
.learn-tile.empty { opacity: 0.45; }
.learn-tile .lab { font-weight: 600; font-size: 0.9rem; line-height: 1.15; min-height: 2.3em; }
.learn-bar { display: flex; height: 9px; border-radius: 2px; overflow: hidden; margin-top: 0.5rem; background: transparent; }
.learn-bar span { display: block; height: 100%; }
.learn-bar .f { background: var(--learn-fatal); }
.learn-bar .i { background: var(--learn-injury); }
.learn-bar .z { background: var(--learn-none); }
.learn-tile .big { font-size: 1.05rem; font-weight: 600; margin-top: 0.35rem; }
.learn-tile .small { font-size: 0.75rem; color: var(--text-secondary); margin-top: 0.15rem; font-variant-numeric: tabular-nums; }
.learn-legend { display: flex; gap: 1rem; margin-top: 0.7rem; font-size: 0.75rem; color: var(--text-secondary); }
.learn-legend i { display: inline-block; width: 10px; height: 10px; border-radius: 2px; margin-right: 0.35rem; vertical-align: -1px; }

/* ---- Panel 2: lessons ---- */
.learn-lessons { display: grid; gap: 0; }
.learn-lesson {
    display: grid; grid-template-columns: 1.3fr 1fr; gap: 0.5rem 1.25rem;
    padding: 0.85rem 0; border-top: 1px solid var(--border-color);
}
.learn-lesson:first-child { border-top: 0; }
.learn-lesson h3 { margin: 0; font-size: 1rem; font-weight: 600; }
.learn-lesson h3 button {
    font: inherit; color: var(--text-primary); background: none; border: 0; padding: 0; cursor: pointer; text-align: left;
}
.learn-lesson h3 button:hover { color: var(--primary-accent); text-decoration: underline; }
.learn-lesson.active h3 button { color: var(--primary-accent); }
.learn-lesson .text { font-size: 0.9rem; margin: 0.2rem 0 0.3rem; }
.learn-lesson .meta { font-size: 0.78rem; color: var(--text-secondary); font-variant-numeric: tabular-nums; }
.learn-lesson .co { font-size: 0.82rem; color: var(--text-secondary); margin-top: 0.3rem; }
.learn-mini { font-size: 0.7rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--text-secondary); margin: 0 0 0.3rem; }
.learn-years { display: grid; gap: 1px; height: 12px; }
.learn-years i { background: var(--learn-tint); border-radius: 1px; }
.learn-years i.y { background: var(--primary-accent); }
.learn-years-lab { display: flex; justify-content: space-between; font-size: 0.68rem; color: var(--text-secondary); margin-top: 0.2rem; font-variant-numeric: tabular-nums; }
.learn-lesson .examples { margin-top: 0.6rem; font-size: 0.82rem; }
.learn-lesson .examples a { display: block; color: var(--text-secondary); text-decoration: none; padding: 0.1rem 0; }
.learn-lesson .examples a:hover { color: var(--primary-accent); text-decoration: underline; }
.learn-more { margin-top: 0.5rem; }

/* shared small buttons */
.learn-btn {
    font: inherit; font-size: 0.85rem; font-weight: 600;
    padding: 0.4rem 0.8rem; border-radius: 6px; cursor: pointer;
    border: 1px solid var(--primary-accent); color: var(--primary-accent); background: var(--card-bg);
}
.learn-btn:hover { filter: brightness(1.08); }
.learn-btn.primary { background: var(--primary-accent); color: var(--primary-accent-text, #fff); }
.learn-btn.quiet { border-color: var(--border-color); color: var(--text-secondary); }
.learn-btn.chosen { background: var(--primary-accent); color: var(--primary-accent-text, #fff); }
.learn-btn:focus-visible { outline: 2px solid var(--primary-accent); outline-offset: 2px; }
.learn-btns { display: flex; flex-wrap: wrap; gap: 0.5rem; }

/* ---- Panel 3: scenario ---- */
.learn-picker { display: flex; flex-wrap: wrap; gap: 0.5rem; align-items: center; margin-bottom: 0.9rem; }
.learn-picker input[type="search"] {
    font: inherit; font-size: 0.9rem; flex: 1 1 220px; min-width: 0;
    padding: 0.4rem 0.6rem; border: 1px solid var(--border-color); border-radius: 6px;
    background: var(--card-bg); color: var(--text-primary);
}
.learn-case { background: var(--card-bg); border: 1px solid var(--border-color); border-radius: 8px; padding: 1rem; }
.learn-head {
    display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 0.6rem 1rem;
    padding: 0.7rem 0.8rem; border-radius: 6px; background: var(--learn-tint); margin-bottom: 0.9rem; font-size: 0.88rem;
}
.learn-head .k { font-size: 0.68rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--text-secondary); }
.learn-chain { position: relative; padding-left: 1.3rem; }
.learn-chain::before { content: ""; position: absolute; left: 5px; top: 8px; bottom: 8px; width: 2px; background: var(--border-color); }
.learn-node { position: relative; padding: 0.3rem 0 0.55rem; }
.learn-node::before {
    content: ""; position: absolute; left: -1.3rem; top: 0.55rem; width: 8px; height: 8px; border-radius: 50%;
    background: var(--card-bg); border: 2px solid var(--text-secondary); margin-left: 1px;
}
.learn-node.trigger::before { border-color: var(--primary-accent); background: var(--primary-accent); }
.learn-node .k { font-size: 0.68rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--text-secondary); }
.learn-node .l { font-weight: 600; font-size: 0.95rem; }
.learn-node .d { font-size: 0.86rem; color: var(--text-secondary); margin-top: 0.1rem; }
.learn-ask {
    margin: 0.4rem 0 0.4rem -1.3rem; padding: 0.8rem 0.9rem;
    border: 1.5px dashed var(--primary-accent); border-radius: 6px;
}
.learn-ask .q { font-weight: 600; font-size: 1.05rem; margin-bottom: 0.6rem; }
.learn-hidden { display: none; }
.learn-reveal { margin-top: 0.9rem; padding-top: 0.8rem; border-top: 1px solid var(--border-color); }
.learn-reveal .k { font-size: 0.68rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--text-secondary); margin-top: 0.7rem; }
.learn-reveal p { margin: 0.2rem 0; font-size: 0.9rem; }
.learn-reveal ul { margin: 0.2rem 0 0; padding-left: 1.2rem; font-size: 0.88rem; }
.learn-reveal li { margin: 0.15rem 0; }
.learn-chips { display: flex; flex-wrap: wrap; gap: 0.35rem; margin-top: 0.3rem; }
.learn-chip {
    font-size: 0.78rem; padding: 0.15rem 0.55rem; border-radius: 999px;
    border: 1px solid var(--border-color); color: var(--text-secondary);
}
.learn-chip.hit { border-color: var(--primary-accent); color: var(--primary-accent); }
.learn-sim a { display: block; font-size: 0.88rem; padding: 0.15rem 0; color: var(--text-primary); text-decoration: none; }
.learn-sim a:hover { color: var(--primary-accent); text-decoration: underline; }
.learn-sim .sev { display: inline-block; width: 8px; height: 8px; border-radius: 50%; margin-right: 0.4rem; vertical-align: 0; }
.learn-note { font-size: 0.82rem; color: var(--text-secondary); margin: 0.6rem 0 0; }
.learn-empty { padding: 1rem; border: 1px dashed var(--border-color); border-radius: 8px; color: var(--text-secondary); font-size: 0.9rem; }

/* ---- Panel 4: briefing pack ---- */
.learn-pack { display: grid; grid-template-columns: minmax(220px, 1fr) 2fr; gap: 1.25rem; }
.learn-pack-controls label { display: grid; grid-template-columns: 1fr 1.4fr; gap: 0.5rem; align-items: center; font-size: 0.88rem; margin: 0.35rem 0; }
.learn-pack-controls label.check { grid-template-columns: auto 1fr; }
.learn-pack-controls select {
    font: inherit; font-size: 0.85rem; padding: 0.3rem 0.4rem; border: 1px solid var(--border-color); border-radius: 6px;
    background: var(--card-bg); color: var(--text-primary); min-width: 0;
}
.learn-sheet { background: var(--card-bg); border: 1px solid var(--border-color); border-radius: 8px; padding: 1rem 1.1rem; }
.learn-sheet .hd { display: flex; justify-content: space-between; align-items: baseline; gap: 1rem; border-bottom: 2px solid var(--text-primary); padding-bottom: 0.4rem; margin-bottom: 0.6rem; }
.learn-sheet .hd b { font-size: 1.1rem; }
.learn-sheet .hd span { font-size: 0.75rem; color: var(--text-secondary); font-variant-numeric: tabular-nums; }
.learn-sheet .item { padding: 0.55rem 0; border-top: 1px solid var(--border-color); font-size: 0.9rem; }
.learn-sheet .item:first-of-type { border-top: 0; }
.learn-sheet .item .yr { font-size: 0.75rem; color: var(--text-secondary); font-variant-numeric: tabular-nums; margin-right: 0.5rem; }
.learn-sheet .item .les { font-size: 0.8rem; color: var(--text-secondary); margin-top: 0.15rem; }
.learn-sheet .item .learn-head { margin: 0.5rem 0; }
.learn-sheet .item .learn-chain { margin-top: 0.3rem; }
.learn-sheet .qs { margin-top: 0.8rem; padding: 0.7rem 0.9rem; border-radius: 6px; background: var(--learn-tint); font-size: 0.88rem; }
.learn-sheet .qs ol { margin: 0.2rem 0 0; padding-left: 1.2rem; }
.learn-sheet .qs li { margin: 0.15rem 0; }
.learn-sheet .outcomes { margin-top: 1rem; padding-top: 0.6rem; border-top: 2px solid var(--text-primary); }
.learn-sheet .outcomes h4 { margin: 0 0 0.4rem; font-size: 1rem; }
.learn-sheet .outcomes .item .l { font-weight: 600; }
.learn-sheet .outcomes .item .d { font-size: 0.84rem; color: var(--text-secondary); }

@media (max-width: 720px) {
    .learn-lesson { grid-template-columns: 1fr; }
    .learn-pack { grid-template-columns: 1fr; }
}

/* ---- Print: the briefing sheet or the scenario card alone ---- */
@media print {
    body.learn-print * { visibility: hidden; }
    body.learn-print #learn-container, body.learn-print #learn-container * { visibility: visible; }
    body.learn-print #learn-container { display: block; position: absolute; left: 0; top: 0; width: 100%; padding: 0; margin: 0; }
    body.learn-print .learn-noprint { display: none !important; }
    body.learn-print-pack #learn-content > *:not(.learn-print-target-pack) { display: none !important; }
    body.learn-print-case #learn-content > *:not(#learn-scenario) { display: none !important; }
    body.learn-print-case #learn-scenario > *:not(.learn-print-target-case) { display: none !important; }
    body.learn-print .learn-sheet, body.learn-print .learn-case { border: 0; padding: 0; }
    body.learn-print .learn-sheet .outcomes { break-before: page; page-break-before: always; }
    body.learn-print .learn-hidden { display: block; }
    body.learn-print .learn-ask, body.learn-print .learn-reveal .learn-btns { display: none; }
    body.learn-print .learn-node::before, body.learn-print .learn-chain::before { -webkit-print-color-adjust: exact; print-color-adjust: exact; }
}