/* DIY tab — the maker's workbench. A shop manual lit by the same firelight as
   the rest of HEARTH: warm cards, ember accents, monospace codes, and an
   inlined schematic viewer that inherits the theme. Modular + responsive. */

.diy { padding-bottom: 2rem; }

/* ---- intro ---- */
.diy__intro { max-width: 64ch; margin: .4rem 0 2.2rem; }
.diy__intro h2 { font-size: var(--step-2); color: var(--ink); margin-bottom: .5rem; }
.diy__lede { color: var(--ink-dim); font-size: var(--step-0); margin: 0; }

/* ---- section scaffold ---- */
.diy__section { margin: 2.4rem 0; }
.diy__sechead {
  border-bottom: 1px solid var(--line-soft); padding-bottom: .6rem; margin-bottom: 1.1rem;
}
.diy__sechead .eyebrow { margin: 0 0 .2rem; }
.diy__sechead h3 {
  font-family: var(--f-display); font-size: var(--step-1); color: var(--ink);
  display: flex; align-items: baseline; gap: .55rem; letter-spacing: -.01em;
}
.diy__sechead h3 .count {
  font-family: var(--f-ui); font-size: var(--step--1); color: var(--ink-mute);
  letter-spacing: .04em; font-weight: 400;
}

/* ---- notes / loading / fallback ---- */
.diy__note {
  color: var(--ink-dim); padding: 1.2rem 1.3rem; border: 1px dashed var(--line);
  border-radius: var(--radius); background: var(--bg-raise); max-width: 60ch;
}
.diy__note--warn { border-color: rgba(224,169,74,.4); }
.diy__note p { margin: 0 0 .3rem; }
.diy__note-sub { color: var(--ink-mute); font-size: var(--step--1); }

/* shared icon sizing */
.ico { display: inline-flex; align-items: center; }
.ico svg { display: block; }

/* ---- firmware ---- */
.fwgrid { display: grid; gap: 14px; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); }
.fwcard {
  background: linear-gradient(155deg, var(--bg-hi), var(--bg-card));
  border: 1px solid var(--line); border-radius: var(--radius);
  padding: 1.15rem 1.2rem; display: flex; flex-direction: column; gap: .7rem;
}
.fwcard__head { display: flex; align-items: flex-start; justify-content: space-between; gap: .6rem; }
.fwcard__name { font-family: var(--f-display); font-size: var(--step-1); color: var(--ink); }
.fwcard__board {
  font-family: ui-monospace, Menlo, monospace; font-size: var(--step--1);
  color: var(--ink-mute); margin-top: .15rem;
}
.fwcard__desc { color: var(--ink-dim); font-size: var(--step--1); margin: 0; }

.fw__files { display: flex; flex-wrap: wrap; align-items: center; gap: .45rem; }
.fw__fileslabel {
  font-size: .62rem; letter-spacing: .18em; text-transform: uppercase; color: var(--ember);
}
.fw__file {
  font-family: ui-monospace, Menlo, monospace; font-size: .74rem; color: var(--ink-dim);
  text-decoration: none; border: 1px solid var(--line); border-radius: 6px; padding: .12rem .45rem;
  transition: border-color .18s, color .18s;
}
.fw__file:hover { border-color: var(--ember); color: var(--ink); }
.fwcard__actions { margin-top: auto; }

.badge {
  font-size: .62rem; letter-spacing: .12em; text-transform: uppercase; font-weight: 600;
  border-radius: 6px; padding: .18rem .5rem; border: 1px solid var(--line); white-space: nowrap;
}
.badge--ver { color: var(--ink-dim); font-family: ui-monospace, Menlo, monospace; letter-spacing: .04em; }
.badge--good { color: var(--good); border-color: rgba(143,183,130,.4); }
.badge--warn { color: var(--warn); border-color: rgba(224,169,74,.42); }
.badge--hot  { color: var(--ember-hot); border-color: rgba(228,100,43,.45); }

.btn-dl {
  display: inline-flex; align-items: center; gap: .5rem; text-decoration: none;
  font-weight: 600; font-size: var(--step--1); color: var(--bg);
  background: linear-gradient(150deg, var(--ember-soft), var(--ember));
  border: 0; border-radius: 10px; padding: .55rem 1rem; cursor: pointer;
  box-shadow: 0 6px 18px var(--glow); transition: transform .16s, box-shadow .16s;
}
.btn-dl:hover { transform: translateY(-1px); box-shadow: 0 9px 24px var(--glow); }
.btn-dl .ico { font-size: 1.05rem; }

/* ---- master builds ---- */
.buildgrid { display: grid; gap: 14px; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); }
.buildcard {
  text-align: left; cursor: pointer; display: flex; gap: 1rem; align-items: flex-start;
  background:
    radial-gradient(120% 140% at 0% 0%, rgba(228,100,43,.14), transparent 60%),
    linear-gradient(155deg, var(--bg-hi), var(--bg-card));
  border: 1px solid rgba(240,161,90,.32); border-radius: var(--radius);
  padding: 1.2rem 1.25rem;
  transition: border-color .2s, transform .2s, box-shadow .2s;
}
.buildcard:hover, .buildcard:focus-visible {
  border-color: var(--ember); transform: translateY(-3px); box-shadow: 0 14px 34px rgba(0,0,0,.42);
}
.buildcard__ico {
  flex: none; font-size: 1.9rem; width: 3.4rem; height: 3.4rem; display: grid; place-items: center;
  background: radial-gradient(circle at 50% 40%, var(--glow), transparent 70%), var(--bg-card);
  border: 1px solid var(--line); border-radius: 14px;
}
.buildcard__body { flex: 1; min-width: 0; }
.buildcard__eyebrow {
  font-size: .62rem; letter-spacing: .18em; text-transform: uppercase; color: var(--ember);
  margin-bottom: .25rem;
}
.buildcard__title { font-family: var(--f-display); font-size: var(--step-1); color: var(--ink); }
.buildcard__summary { color: var(--ink-dim); font-size: var(--step--1); margin: .35rem 0 0; }
.buildcard__meta { flex: none; align-self: flex-end; }
.buildcard__open { font-size: var(--step--1); font-weight: 600; color: var(--ember-soft); white-space: nowrap; }

/* pre-formatted command block inside build steps + quick start */
.step pre, .quickstart pre {
  position: relative; margin: .6rem 0 .1rem; padding: .7rem .85rem; overflow-x: auto;
  background: var(--bg); border: 1px solid var(--line); border-radius: var(--radius-sm);
}
.step pre code, .quickstart pre code {
  display: block; background: none; border: 0; padding: 0; color: var(--ink);
  font-family: ui-monospace, Menlo, monospace; font-size: .78rem; line-height: 1.55; white-space: pre;
}
/* leave room for the copy button so long commands don't slide under it */
pre.has-copy { padding-right: 4.2rem; }
pre.has-copy code { white-space: pre; }

/* copy button on a command block */
.copybtn {
  position: absolute; top: .4rem; right: .4rem; z-index: 2;
  display: inline-flex; align-items: center; gap: .32rem;
  font-family: var(--f-ui); font-size: .64rem; font-weight: 700; letter-spacing: .04em;
  color: var(--ink-dim); background: var(--bg-hi); border: 1px solid var(--line);
  border-radius: 7px; padding: .24rem .5rem; cursor: pointer;
  opacity: .9; transition: color .16s, border-color .16s, background .16s, opacity .16s;
}
.copybtn:hover, .copybtn:focus-visible { color: var(--ink); border-color: var(--ember); opacity: 1; }
.copybtn .ico { font-size: .8rem; }
.copybtn.is-copied { color: var(--good); border-color: rgba(143,183,130,.5); background: rgba(143,183,130,.14); }
.copybtn__lbl { line-height: 1; }

/* quick-start panel — the "3 commands and you're watching" lede */
.quickstart {
  background:
    radial-gradient(130% 150% at 0% 0%, rgba(228,100,43,.13), transparent 62%),
    var(--bg-raise);
  border: 1px solid rgba(240,161,90,.34); border-radius: var(--radius);
  padding: 1rem 1.15rem; color: var(--ink-dim); font-size: var(--step--1);
}
.quickstart p { margin: .3rem 0 .55rem; }
.quickstart p:first-child { margin-top: 0; }
.quickstart p:last-child { margin-bottom: 0; }
.quickstart strong { color: var(--ink); }
.quickstart code {
  font-family: ui-monospace, Menlo, monospace; font-size: .86em; color: var(--ember-soft);
  background: var(--bg); border: 1px solid var(--line); border-radius: 5px; padding: .05em .35em;
}
.quickstart kbd { font-size: .82em; }

/* keyboard hint chips (used in nano save steps) */
.step kbd, .quickstart kbd {
  font-family: ui-monospace, Menlo, monospace; font-size: .8em; color: var(--ink);
  background: var(--bg-hi); border: 1px solid var(--line); border-bottom-width: 2px;
  border-radius: 5px; padding: .05em .4em; white-space: nowrap;
}

/* ---- expander (native details) ---- */
.exp { border-top: 1px solid var(--line-soft); }
.exp__sum {
  display: flex; align-items: center; gap: .5rem; cursor: pointer; list-style: none;
  padding: .7rem 0 .2rem; font-weight: 600; font-size: var(--step--1); color: var(--ember-soft);
}
.exp__sum::-webkit-details-marker { display: none; }
.exp__chev { color: var(--ember); transition: transform .2s var(--ease); font-size: .8rem; }
.exp[open] .exp__chev { transform: rotate(90deg); }
.exp__body { color: var(--ink-dim); font-size: var(--step--1); padding: .3rem 0 .7rem; }
.exp__body ol, .exp__body ul { margin: .2rem 0 .2rem; padding-left: 1.3rem; }
.exp__body li { margin: .4rem 0; }
.exp__body p { margin: .5rem 0; }
.exp__body a { color: var(--ember-soft); }
.exp__body code {
  font-family: ui-monospace, Menlo, monospace; font-size: .86em; color: var(--ink);
  background: var(--bg); border: 1px solid var(--line); border-radius: 5px; padding: .05em .35em;
}

/* ---- node gallery ---- */
.nodegrid { display: grid; gap: 14px; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); }
.nodecard {
  text-align: left; background: var(--bg-raise); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 1.15rem 1.2rem; cursor: pointer;
  display: flex; flex-direction: column; gap: .7rem;
  transition: border-color .2s, transform .2s, box-shadow .2s;
}
.nodecard:hover, .nodecard:focus-visible {
  border-color: var(--ember); transform: translateY(-3px); box-shadow: 0 12px 30px rgba(0,0,0,.4);
}
.nodecard__ico {
  font-size: 1.7rem; width: 3rem; height: 3rem; display: grid; place-items: center;
  background: radial-gradient(circle at 50% 40%, var(--glow), transparent 70%), var(--bg-card);
  border: 1px solid var(--line); border-radius: 12px;
}
.nodecard__title { font-family: var(--f-display); font-size: var(--step-1); color: var(--ink); }
.nodecard__summary {
  color: var(--ink-dim); font-size: var(--step--1); margin: .1rem 0 0; flex: 1;
  display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden;
}
.nodecard__meta { display: flex; align-items: center; flex-wrap: wrap; gap: .55rem; }
.nodecard__time {
  display: inline-flex; align-items: center; gap: .3rem; font-size: var(--step--1); color: var(--ink-mute);
}
.nodecard__open {
  margin-left: auto; font-size: var(--step--1); font-weight: 600; color: var(--ember-soft);
}

/* ---- modal ---- */
.dmodal {
  position: fixed; inset: 0; z-index: 60; display: grid; place-items: center;
  padding: clamp(.5rem, 3vw, 2rem); opacity: 0; transition: opacity .18s var(--ease);
}
.dmodal.is-open { opacity: 1; }
.dmodal__scrim { position: absolute; inset: 0; background: rgba(8,5,3,.72); backdrop-filter: blur(3px); }
.dmodal__card {
  position: relative; width: 100%; max-width: 560px; max-height: 90vh; overflow: hidden;
  display: flex; flex-direction: column; background: var(--bg-card);
  border: 1px solid var(--line); border-radius: var(--radius-lg); box-shadow: var(--shadow);
  transform: translateY(10px) scale(.99); transition: transform .2s var(--ease);
}
.dmodal.is-open .dmodal__card { transform: none; }
.dmodal__card--lg { max-width: 820px; }
.dmodal__head {
  display: flex; align-items: flex-start; justify-content: space-between; gap: 1rem;
  padding: 1.1rem 1.3rem .9rem; border-bottom: 1px solid var(--line-soft);
  position: sticky; top: 0; background: var(--bg-card); z-index: 1;
}
.dmodal__eyebrow {
  font-size: .64rem; letter-spacing: .2em; text-transform: uppercase; color: var(--ember);
  margin-bottom: .25rem;
}
.dmodal__title { font-family: var(--f-display); font-size: var(--step-1); color: var(--ink); }
.dmodal__close {
  flex: none; width: 34px; height: 34px; border-radius: 50%; cursor: pointer;
  background: var(--bg-hi); border: 1px solid var(--line); color: var(--ink-dim);
  font-size: 1rem; line-height: 1; transition: color .18s, border-color .18s, transform .18s;
}
.dmodal__close:hover { color: var(--ink); border-color: var(--ember); transform: rotate(90deg); }
.dmodal__body { overflow-y: auto; padding: 1.3rem; }

/* ---- node detail body ---- */
.nodeview__summary { color: var(--ink-dim); margin: 0 0 1rem; }
.nodeview__meta { display: flex; align-items: center; gap: .7rem; margin-bottom: 1.2rem; }
.nodeview__time {
  display: inline-flex; align-items: center; gap: .35rem; color: var(--ink-mute); font-size: var(--step--1);
}
.nblock { margin: 1.6rem 0 0; }
.nblock__label {
  font-family: var(--f-ui); font-size: .68rem; letter-spacing: .2em; text-transform: uppercase;
  color: var(--ember); margin: 0 0 .7rem; font-weight: 600;
}

/* schematic viewer */
.schem { margin: 0; position: relative; }
.schem__frame {
  display: block; border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; background: var(--bg-raise); cursor: zoom-in; min-height: 120px;
}
.schem__frame.is-loading { min-height: 180px; }
.schem__frame svg { display: block; width: 100%; height: auto; }
.schem:focus-visible { outline: 2px solid var(--ember); outline-offset: 3px; border-radius: var(--radius); }
.schem__zoom {
  position: absolute; top: .55rem; right: .55rem; width: 34px; height: 34px; border-radius: 9px;
  background: rgba(23,18,15,.82); border: 1px solid var(--line); color: var(--ember-soft);
  cursor: pointer; display: grid; place-items: center; font-size: .95rem;
  transition: color .18s, border-color .18s;
}
.schem__zoom:hover { color: var(--ink); border-color: var(--ember); }
.schem__cap { margin-top: .5rem; font-size: var(--step--1); color: var(--ink-mute); text-align: center; }
.schem__err { padding: 2rem 1rem; text-align: center; color: var(--ink-mute); font-size: var(--step--1); }

/* lightbox schematic */
.lightbox { background: var(--bg-raise); border: 1px solid var(--line); border-radius: var(--radius); overflow: auto; }
.lightbox__svg svg { display: block; width: 100%; height: auto; }
.lightbox__svg { min-height: 200px; }

/* BOM table */
.bom__wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); }
.bom { width: 100%; border-collapse: collapse; font-size: var(--step--1); min-width: 460px; }
.bom thead th {
  text-align: left; font-family: var(--f-ui); font-size: .64rem; letter-spacing: .14em;
  text-transform: uppercase; color: var(--ink-mute); font-weight: 600;
  padding: .6rem .8rem; background: var(--bg-hi); border-bottom: 1px solid var(--line);
}
.bom tbody td { padding: .6rem .8rem; border-bottom: 1px solid var(--line-soft); vertical-align: top; }
.bom tbody tr:last-child td { border-bottom: 0; }
.bom__part { color: var(--ink); font-weight: 600; white-space: nowrap; }
.bom__part a { color: var(--ember-soft); text-decoration: none; border-bottom: 1px solid transparent; }
.bom__part a:hover { border-color: var(--ember-soft); }
.bom__qty { color: var(--ink-dim); font-family: ui-monospace, Menlo, monospace; white-space: nowrap; }
.bom__note { color: var(--ink-dim); min-width: 220px; }

/* build steps */
.steps { display: flex; flex-direction: column; gap: .7rem; }
.step {
  background: var(--bg-raise); border: 1px solid var(--line-soft); border-left: 3px solid var(--ember);
  border-radius: var(--radius-sm); padding: .75rem .95rem; color: var(--ink-dim); font-size: var(--step--1);
}
.step p { margin: 0; }
.step strong { color: var(--ink); }
.step code, .notes code {
  font-family: ui-monospace, Menlo, monospace; font-size: .86em; color: var(--ember-soft);
  background: var(--bg); border: 1px solid var(--line); border-radius: 5px; padding: .05em .35em;
}
.step em, .notes em { color: var(--ink); font-style: italic; }

/* notes */
.notes {
  background: linear-gradient(150deg, rgba(228,100,43,.08), transparent);
  border: 1px solid rgba(228,100,43,.28); border-radius: var(--radius);
  padding: .9rem 1.1rem; color: var(--ink-dim); font-size: var(--step--1);
}
.notes p { margin: .3rem 0; }
.notes p:first-child { margin-top: 0; }
.notes p:last-child { margin-bottom: 0; }
.notes strong { color: var(--warn); }
.notes ul { margin: .4rem 0 .1rem; padding-left: 1.2rem; }
.notes li { margin: .35rem 0; }
.notes li strong { color: var(--ink); }

/* troubleshooting reads as a calm checklist, not a safety warning */
.notes--tshoot {
  background: linear-gradient(150deg, rgba(240,161,90,.06), transparent);
  border-color: var(--line);
}
.notes--tshoot strong { color: var(--ember-soft); }

/* ---- IR code library ---- */
.ir { display: flex; flex-direction: column; gap: 1rem; }
.ir__bar {
  display: flex; align-items: center; gap: .6rem; background: var(--bg-raise);
  border: 1px solid var(--line); border-radius: 12px; padding: .1rem .85rem;
  color: var(--ink-mute); transition: border-color .18s;
}
.ir__bar:focus-within { border-color: var(--ember); color: var(--ember); }
.ir__bar .ico { font-size: 1.05rem; }
.ir__search {
  flex: 1; border: 0; background: transparent; padding: .7rem 0; outline: none;
  color: var(--ink); font-size: var(--step-0);
}
.ir__search::placeholder { color: var(--ink-mute); }
.ir__list { display: flex; flex-direction: column; gap: 1rem; }
.ir__empty { color: var(--ink-mute); padding: 1rem; text-align: center; font-size: var(--step--1); }

.irg { border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.irg__head {
  display: flex; align-items: baseline; flex-wrap: wrap; gap: .55rem;
  padding: .7rem 1rem; background: var(--bg-hi); border-bottom: 1px solid var(--line);
}
.irg__brand { font-family: var(--f-display); font-size: var(--step-0); color: var(--ink); font-weight: 600; }
.irg__type { font-size: var(--step--1); color: var(--ink-dim); }
.irg__proto {
  margin-left: auto; font-family: ui-monospace, Menlo, monospace; font-size: .68rem;
  color: var(--ink-mute); border: 1px solid var(--line); border-radius: 5px; padding: .08rem .4rem;
}
.irg__codes {
  display: grid; gap: 8px; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  padding: .85rem 1rem; background: var(--bg-raise);
}
.irc {
  display: flex; align-items: center; gap: .5rem; text-align: left; cursor: pointer;
  background: var(--bg-card); border: 1px solid var(--line); border-radius: 9px;
  padding: .5rem .65rem; transition: border-color .16s, background .16s, transform .1s;
}
.irc:hover, .irc:focus-visible { border-color: var(--ember); }
.irc:active { transform: scale(.98); }
.irc__name { font-size: var(--step--1); color: var(--ink); font-weight: 600; }
.irc__code {
  margin-left: auto; font-family: ui-monospace, Menlo, monospace; font-size: .72rem; color: var(--ember-soft);
}
.irc__copy { color: var(--ink-mute); font-size: .9rem; flex: none; transition: color .16s; }
.irc:hover .irc__copy { color: var(--ember); }
.irc.is-copied { border-color: var(--good); background: rgba(143,183,130,.12); }
.irc.is-copied .irc__copy { color: var(--good); }

/* ---- open-source links ---- */
.linkgrid { display: grid; gap: 12px; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); }
.linkcard {
  text-decoration: none; background: var(--bg-raise); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 1rem 1.1rem; display: flex; flex-direction: column; gap: .4rem;
  transition: border-color .2s, transform .2s;
}
.linkcard:hover { border-color: var(--ember); transform: translateY(-2px); }
.linkcard__top { display: flex; align-items: center; justify-content: space-between; gap: .5rem; }
.linkcard__title { font-weight: 600; color: var(--ink); }
.linkcard__arrow { color: var(--ember); font-size: 1rem; }
.linkcard__desc { color: var(--ink-dim); font-size: var(--step--1); margin: 0; }

/* ---- downloads ---- */
.dlgrid { display: grid; gap: 14px; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); }
.dlcard {
  display: flex; gap: 1rem; align-items: flex-start;
  background: var(--bg-raise); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 1.15rem 1.2rem; transition: border-color .2s, transform .2s;
}
.dlcard:hover { border-color: var(--ember); transform: translateY(-2px); }
.dlcard__ico {
  flex: none; font-size: 1.5rem; width: 2.9rem; height: 2.9rem; display: grid; place-items: center;
  background: var(--bg-card); border: 1px solid var(--line); border-radius: 12px; line-height: 1;
}
.dlcard__body { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: .3rem; }
.dlcard__name { font-family: var(--f-display); font-size: var(--step-0); color: var(--ink); font-weight: 600; }
.dlcard__desc { color: var(--ink-dim); font-size: var(--step--1); margin: 0; }
.dlcard__actions { margin-top: .5rem; }
.dlcard__src {
  display: inline-flex; align-items: center; gap: .45rem; font-size: var(--step--1); font-weight: 600;
  color: var(--ember-soft); border: 1px dashed rgba(240,161,90,.5); border-radius: 10px; padding: .5rem .85rem;
}
.dlcard__src .ico { font-size: 1rem; }

/* ---- responsive ---- */
@media (max-width: 560px) {
  .nodecard__summary { -webkit-line-clamp: 4; }
  .dmodal__body { padding: 1rem; }
  .irg__codes { grid-template-columns: 1fr 1fr; }
  .buildcard { flex-direction: column; }
  .buildcard__meta { align-self: flex-start; }
}