/* =============================================================================
   Devlog deep-dives
   Extends styles.css with the editorial components used in the long-form Pond
   devlogs (breadcrumb, glance lists, timeline, badges, tables, decision-map
   SVGs). Everything is driven off the site's CSS variables so both the dark
   and light themes work, and the shared theme toggle in script.js carries the
   reader's choice across pages.
   ============================================================================= */

:root {
    --dl-surface: rgba(255, 255, 255, 0.04);
    --dl-surface-strong: rgba(255, 255, 255, 0.06);

    --dl-ev: #34d399;  --dl-ev-bg: rgba(52, 211, 153, 0.12);  --dl-ev-bd: rgba(52, 211, 153, 0.30);
    --dl-inf: #fbbf24; --dl-inf-bg: rgba(251, 191, 36, 0.12); --dl-inf-bd: rgba(251, 191, 36, 0.30);
    --dl-un: #fb7185;  --dl-un-bg: rgba(251, 113, 133, 0.12); --dl-un-bd: rgba(251, 113, 133, 0.30);

    --dl-keep: #34d399;
    --dl-drop: #fb7185;
}

body.light-mode {
    --dl-surface: rgba(0, 0, 0, 0.025);
    --dl-surface-strong: rgba(0, 0, 0, 0.045);

    --dl-ev: #047857;  --dl-ev-bg: rgba(4, 120, 87, 0.10);  --dl-ev-bd: rgba(4, 120, 87, 0.25);
    --dl-inf: #b45309; --dl-inf-bg: rgba(180, 83, 9, 0.10); --dl-inf-bd: rgba(180, 83, 9, 0.25);
    --dl-un: #be123c;  --dl-un-bg: rgba(190, 18, 60, 0.08); --dl-un-bd: rgba(190, 18, 60, 0.22);

    --dl-keep: #047857;
    --dl-drop: #be123c;
}

/* -- container ------------------------------------------------------------- */
.wrap {
    max-width: 720px;
    margin: 0 auto;
    padding: 2.25rem 2rem 6rem;
}

/* -- breadcrumb ------------------------------------------------------------ */
.devlog-crumb {
    font-family: var(--font-mono);
    font-size: 12px;
    letter-spacing: 0.04em;
    color: var(--text-muted);
    margin: 0 0 2.25rem;
}

.devlog-crumb a {
    color: var(--text-muted);
    text-decoration: none;
}

.devlog-crumb a:hover {
    color: var(--accent);
}

.devlog-crumb .sep {
    opacity: 0.55;
    margin: 0 0.45em;
}

.devlog-crumb .cur {
    color: var(--text-secondary);
}

/* -- header ---------------------------------------------------------------- */
header.title {
    border-bottom: 1px solid var(--text-primary);
    padding-bottom: 1.6rem;
    margin-bottom: 2.25rem;
}

.kicker {
    font-family: var(--font-mono);
    font-size: 12px;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin: 0 0 1rem;
}

.wrap h1 {
    font-family: var(--font-serif);
    font-size: 2rem;
    line-height: 1.2;
    letter-spacing: -0.01em;
    margin: 0 0 1rem;
}

.thesis {
    font-family: var(--font-sans);
    font-size: 1.125rem;
    line-height: 1.55;
    font-weight: 300;
    color: var(--text-secondary);
    margin: 0 0 1.4rem;
}

.meta {
    display: flex;
    flex-wrap: wrap;
    gap: 6px 18px;
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--text-muted);
}

.meta b {
    color: var(--text-secondary);
    font-weight: 500;
}

.status {
    display: inline-block;
    margin-top: 1rem;
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--dl-ev);
    background: var(--dl-ev-bg);
    border: 1px solid var(--dl-ev-bd);
    padding: 4px 10px;
    border-radius: 4px;
}

/* -- section labels & subheads --------------------------------------------- */
.wrap h2 {
    font-family: var(--font-mono);
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--accent);
    margin: 3.25rem 0 1.1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border);
}

.wrap h3 {
    font-family: var(--font-serif);
    font-size: 1.3rem;
    font-weight: 400;
    margin: 1.8rem 0 0.5rem;
}

/* -- body text ------------------------------------------------------------- */
.wrap p {
    font-family: var(--font-sans);
    margin: 0 0 1rem;
}

.lede {
    font-size: 1.125rem;
    color: var(--text-secondary);
}

.wrap code {
    font-family: var(--font-mono);
    font-size: 0.85em;
    background: var(--dl-surface-strong);
    padding: 1px 5px;
    border-radius: 3px;
}

.wrap a {
    text-underline-offset: 2px;
}

/* -- confidence badges & source labels ------------------------------------- */
.badge {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    padding: 2px 7px;
    border-radius: 3px;
    vertical-align: middle;
    white-space: nowrap;
}

.badge.ev  { color: var(--dl-ev);  background: var(--dl-ev-bg);  border: 1px solid var(--dl-ev-bd); }
.badge.inf { color: var(--dl-inf); background: var(--dl-inf-bg); border: 1px solid var(--dl-inf-bd); }
.badge.un  { color: var(--dl-un);  background: var(--dl-un-bg);  border: 1px solid var(--dl-un-bd); }

.src {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--accent);
    background: var(--dl-surface-strong);
    border: 1px solid var(--border);
    border-radius: 3px;
    padding: 1px 5px;
    white-space: nowrap;
}

/* -- glance list ----------------------------------------------------------- */
ul.glance {
    list-style: none;
    margin: 0;
    padding: 0;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--dl-surface);
    overflow: hidden;
}

ul.glance li {
    position: relative;
    padding: 13px 18px 13px 42px;
    border-top: 1px solid var(--border);
    font-family: var(--font-sans);
    font-size: 0.95rem;
    line-height: 1.55;
}

ul.glance li:first-child {
    border-top: 0;
}

ul.glance li::before {
    content: "\203A";
    position: absolute;
    left: 18px;
    top: 11px;
    color: var(--accent);
    font-weight: 700;
}

/* -- figure / decision-map diagram ----------------------------------------- */
figure {
    margin: 1.6rem 0;
    padding: 0;
}

figcaption {
    font-family: var(--font-sans);
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 0.7rem;
    font-style: italic;
}

.diagram {
    background: var(--dl-surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 14px;
}

.diagram svg {
    display: block;
    max-width: 100%;
    height: auto;
}

.diagram .box       { fill: var(--dl-surface-strong); stroke: var(--border); stroke-width: 1.5; }
.diagram .box.dec   { fill: var(--dl-ev-bg);  stroke: var(--dl-ev); }
.diagram .box.con   { fill: var(--dl-inf-bg); stroke: var(--dl-inf); }
.diagram .tn        { fill: var(--text-primary);   font: 600 13px var(--font-sans); }
.diagram .ts        { fill: var(--text-secondary); font: 11.5px var(--font-sans); }
.diagram .edge      { stroke: var(--text-muted); stroke-width: 1.5; fill: none; marker-end: url(#arrow); }
.diagram marker path { fill: var(--text-muted); }

/* -- timeline -------------------------------------------------------------- */
ol.timeline {
    list-style: none;
    margin: 0;
    padding: 0;
    position: relative;
}

ol.timeline::before {
    content: "";
    position: absolute;
    left: 14px;
    top: 6px;
    bottom: 6px;
    width: 2px;
    background: var(--border);
}

ol.timeline li {
    position: relative;
    padding: 0 0 1.6rem 46px;
}

ol.timeline li::before {
    content: "";
    position: absolute;
    left: 8px;
    top: 5px;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--bg-primary);
    border: 2.5px solid var(--accent);
}

ol.timeline li.fail::before {
    border-color: var(--dl-drop);
}

ol.timeline .when {
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--text-muted);
}

ol.timeline .head {
    font-family: var(--font-sans);
    font-weight: 500;
    font-size: 1rem;
    margin: 2px 0 4px;
    color: var(--text-primary);
}

ol.timeline p {
    font-family: var(--font-sans);
    font-size: 0.95rem;
    margin: 0 0 6px;
    color: var(--text-secondary);
}

/* -- tables ---------------------------------------------------------------- */
.wrap table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.2rem 0;
    font-family: var(--font-sans);
    font-size: 0.9rem;
    background: var(--dl-surface);
}

.wrap caption {
    text-align: left;
    font-size: 0.82rem;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
    font-style: italic;
}

.wrap th,
.wrap td {
    text-align: left;
    padding: 10px 12px;
    border: 1px solid var(--border);
    vertical-align: top;
}

.wrap thead th {
    background: var(--dl-surface-strong);
    color: var(--accent);
    font-family: var(--font-mono);
    font-size: 10.5px;
    font-weight: 500;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.wrap tbody th {
    font-weight: 600;
    background: var(--dl-surface-strong);
    color: var(--text-primary);
}

.tag-keep { color: var(--dl-keep); font-weight: 700; }
.tag-drop { color: var(--dl-drop); font-weight: 700; }

.tag-sel {
    display: inline-block;
    background: var(--dl-ev-bg);
    color: var(--dl-ev);
    border: 1px solid var(--dl-ev-bd);
    font-family: var(--font-mono);
    font-size: 10px;
    padding: 1px 6px;
    border-radius: 3px;
    text-transform: uppercase;
}

/* -- callout --------------------------------------------------------------- */
.callout {
    background: var(--dl-surface);
    border: 1px solid var(--border);
    border-left: 3px solid var(--accent);
    border-radius: 6px;
    padding: 16px 18px;
    margin: 1.3rem 0;
}

.callout.warn {
    border-left-color: var(--dl-inf);
}

.callout .lbl {
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin: 0 0 6px;
}

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

/* -- details / source ledger / code ---------------------------------------- */
details {
    background: var(--dl-surface);
    border: 1px solid var(--border);
    border-radius: 6px;
    margin: 0.9rem 0;
    padding: 0 16px;
}

summary {
    cursor: pointer;
    padding: 13px 0;
    font-family: var(--font-sans);
    font-weight: 500;
    font-size: 0.95rem;
    color: var(--text-primary);
}

summary::marker {
    color: var(--accent);
}

details[open] {
    padding-bottom: 8px;
}

.wrap pre {
    font-family: var(--font-mono);
    font-size: 0.78rem;
    line-height: 1.5;
    overflow-x: auto;
    background: var(--dl-surface-strong);
    border: 1px solid var(--border);
    border-radius: 5px;
    padding: 12px;
    margin: 6px 0 14px;
    color: var(--text-primary);
}

.reflist {
    font-size: 0.86rem;
}

.reflist li {
    margin-bottom: 9px;
}

/* -- footer ---------------------------------------------------------------- */
.wrap footer {
    margin-top: 3.5rem;
    padding-top: 1.25rem;
    border-top: 1px solid var(--border);
    font-family: var(--font-sans);
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* -- responsive ------------------------------------------------------------ */
@media (max-width: 640px) {
    .wrap {
        padding: 1.75rem 1.25rem 4rem;
    }

    .wrap h1 {
        font-size: 1.65rem;
    }

    ul.glance li {
        padding-left: 36px;
    }
}

/* -- print ----------------------------------------------------------------- */
@media print {
    #main-nav,
    .devlog-crumb {
        display: none;
    }

    .wrap {
        max-width: none;
        padding: 0;
    }

    .wrap h2 { break-after: avoid; }
    .wrap h3,
    figure,
    .wrap table,
    .callout,
    ol.timeline li { break-inside: avoid; }

    details { border: 0; }
    details:not([open]) summary { list-style: none; }
    details > *:not(summary) { display: block !important; }
    a { text-decoration: underline; }
}