/* MDL Ranger. Shared MDL structure (gradient, phi spacing, glass cards,
   Roboto stack, 8px buttons); Ranger's accent is trail amber on forest sage.
   Two functional themes on top: Night (red on black, keeps dark adaptation)
   and Field (black on white, readable in sun and through wet glasses). */
:root {
  --phi: 1.618;
  --bg-gradient-angle: calc(90deg / var(--phi));
  --bg-gradient-start: #5fb3a1;
  --bg-gradient-end: #000000;
  --bg: linear-gradient(var(--bg-gradient-angle), var(--bg-gradient-start), var(--bg-gradient-end));

  --ink: #ffffff;
  --muted: rgba(255, 255, 255, 0.68);
  --card: rgba(0, 0, 0, 0.42);
  --card-2: rgba(255, 255, 255, 0.07);
  --line: rgba(255, 255, 255, 0.16);
  --accent: #e0a63a;
  --accent-ink: #1a1203;
  --sage: #9cc58a;
  --warn: #ff8a7a;
  --warn-bg: rgba(120, 20, 10, 0.45);
  --ok: #9cc58a;
  --field-card-bg: #0d1510;
  --field-card-ink: #f4f1e6;

  --space-1: 8px;
  --space-2: 13px;
  --space-3: 21px;
  --space-4: 34px;
  --btn-radius: 8px;
  --card-radius: calc(var(--btn-radius) * var(--phi));
  --shadow: 0 3px 5px rgba(0, 0, 0, 0.25), 0 8px 21px rgba(0, 0, 0, 0.35);
}
:root[data-theme="night"] {
  --bg: #000;
  --ink: #ff4b3a;
  --muted: #b3301f;
  --card: #0a0000;
  --card-2: #120000;
  --line: #4a0d06;
  --accent: #ff4b3a;
  --accent-ink: #000;
  --sage: #ff4b3a;
  --warn: #ff4b3a;
  --warn-bg: #1c0000;
  --ok: #ff4b3a;
  --field-card-bg: #000;
  --field-card-ink: #ff4b3a;
  --shadow: none;
}
:root[data-theme="field"] {
  --bg: #ffffff;
  --ink: #000000;
  --muted: #2b2b2b;
  --card: #ffffff;
  --card-2: #f1f1f1;
  --line: #000000;
  --accent: #000000;
  --accent-ink: #ffffff;
  --sage: #0b5d1e;
  --warn: #a40000;
  --warn-bg: #ffe9e6;
  --ok: #0b5d1e;
  --field-card-bg: #ffffff;
  --field-card-ink: #000000;
  --shadow: none;
}
:root[data-theme="field"] body { font-size: 17px; }
:root[data-theme="field"] .card, :root[data-theme="field"] .fcard, :root[data-theme="field"] input,
:root[data-theme="field"] textarea, :root[data-theme="field"] .btn, :root[data-theme="field"] .chip { border-width: 2px; }

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  min-height: 100vh;
  font-family: Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  background-attachment: fixed;
  color: var(--ink);
  line-height: 1.45;
}
a { color: inherit; }
p, ul, ol, h1, h2, h3, h4 { margin: 0; }
button, input, textarea, select { font: inherit; color: inherit; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }
[hidden] { display: none !important; }

.mdl-home {
  position: fixed; top: 8px; left: 8px; z-index: 1000;
  width: 32px; height: 32px; display: block; border-radius: 9px; overflow: hidden;
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.7), 0 0 0 2px rgba(0, 0, 0, 0.28), 0 2px 6px rgba(0, 0, 0, 0.35);
  transition: transform 0.2s ease;
}
.mdl-home img { display: block; width: 100%; height: 100%; }
.mdl-home:hover { transform: scale(1.08); }

/* ---- Header ---- */
.top { max-width: 760px; margin: 0 auto; padding: 8px 12px 0 52px; }
.top-row { display: flex; align-items: center; justify-content: space-between; min-height: 32px; }
.brand { font-weight: 800; font-size: 1.15rem; letter-spacing: 0.04em; text-decoration: none; text-transform: uppercase; }
.gear { font-size: 0.82rem; color: var(--muted); text-decoration: none; padding: 6px 4px; }
.gear:hover { color: var(--ink); }
.tabs {
  display: grid; grid-auto-flow: column; grid-auto-columns: 1fr; gap: 4px;
  margin: 6px 0 0 -40px; /* the badge only needs the first row */
}
.tabs a {
  text-align: center; text-decoration: none; font-size: 0.9rem; font-weight: 600;
  padding: 9px 2px; border-radius: var(--btn-radius); color: var(--muted);
  border: 1px solid transparent;
}
.tabs a[aria-current="page"] { color: var(--ink); background: var(--card); border-color: var(--line); }

main { max-width: 760px; margin: 0 auto; padding: 10px 12px 34px; outline: none; }
.loading { color: var(--muted); padding: 20px 0; }

/* ---- Common blocks ---- */
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--card-radius); padding: 13px 14px; box-shadow: var(--shadow); }
.card + .card, .card + .sec, .sec + .card, .sec + .sec { margin-top: 13px; }
.sec h2 { font-size: 0.78rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted); margin: 18px 0 8px; font-weight: 700; }
.muted { color: var(--muted); }
.small { font-size: 0.86rem; }
.row { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.spacer { flex: 1 1 auto; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  min-height: 44px; padding: 8px 14px; border-radius: var(--btn-radius);
  border: 1px solid var(--line); background: var(--card-2); cursor: pointer;
  text-decoration: none; font-weight: 600; font-size: 0.95rem;
}
.btn:hover { border-color: var(--accent); }
.btn.primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
.btn.small { min-height: 36px; padding: 5px 11px; font-size: 0.86rem; }
.btn[disabled] { opacity: 0.5; cursor: not-allowed; }
.chip {
  min-height: 36px; padding: 5px 12px; border-radius: 999px; border: 1px solid var(--line);
  background: var(--card-2); cursor: pointer; font-size: 0.86rem; text-decoration: none; display: inline-flex; align-items: center;
}
.chip[aria-pressed="true"] { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); font-weight: 700; }

.pill { display: inline-block; font-size: 0.72rem; font-weight: 700; letter-spacing: 0.04em; padding: 2px 8px; border-radius: 999px; border: 1px solid var(--line); color: var(--muted); white-space: nowrap; }
.pill.gate { color: var(--accent); border-color: var(--accent); }
.pill.ok { color: var(--ok); border-color: var(--ok); }
.pill.due, .pill.lock { color: var(--warn); border-color: var(--warn); }

/* ---- Search ---- */
.search { display: flex; gap: 8px; }
.search input {
  flex: 1 1 auto; min-width: 0; min-height: 48px; padding: 10px 14px; font-size: 1.05rem;
  border-radius: var(--btn-radius); border: 1px solid var(--line); background: var(--card);
}
.search input::placeholder { color: var(--muted); }
.results { margin-top: 8px; }

/* ---- Lists of items ---- */
.items { list-style: none; padding: 0; margin: 0; }
.items li + li { border-top: 1px solid var(--line); }
.items a.item {
  display: flex; gap: 10px; align-items: center; padding: 11px 2px; text-decoration: none; min-height: 48px;
}
.item .mark { flex: 0 0 26px; height: 26px; border-radius: 50%; border: 2px solid var(--line); display: grid; place-items: center; font-size: 0.8rem; font-weight: 800; }
.item .mark.ok { background: var(--ok); border-color: var(--ok); color: #0b1a0d; }
.item .mark.due { border-color: var(--warn); color: var(--warn); }
.item .mark.lock { border-style: dashed; color: var(--muted); }
.item .mark.half { border-color: var(--accent); color: var(--accent); }
.item .txt { flex: 1 1 auto; min-width: 0; }
.item .t { font-weight: 600; display: block; }
.item .s { display: block; font-size: 0.84rem; color: var(--muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.item .meta { flex: 0 0 auto; }

.books { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; }
.books a { display: block; text-decoration: none; background: var(--card); border: 1px solid var(--line); border-radius: var(--card-radius); padding: 10px 12px; min-height: 64px; }
.books a:hover { border-color: var(--accent); }
.books .n { font-size: 0.72rem; color: var(--accent); font-weight: 700; letter-spacing: 0.08em; }
.books .b { font-weight: 700; display: block; }
.books .c { font-size: 0.78rem; color: var(--muted); }
@media (min-width: 620px) { .books { grid-template-columns: repeat(3, minmax(0, 1fr)); } }

/* ---- Continue card ---- */
.continue { display: grid; gap: 8px; margin-top: 10px; }
.continue .head { display: flex; align-items: baseline; gap: 8px; flex-wrap: wrap; }
.continue .who { font-weight: 800; font-size: 1.05rem; }
.bar { height: 8px; border-radius: 4px; background: var(--card-2); overflow: hidden; border: 1px solid var(--line); }
.bar i { display: block; height: 100%; background: var(--accent); }

/* ---- Skill page ---- */
.crumbs { font-size: 0.82rem; color: var(--muted); display: flex; gap: 6px; flex-wrap: wrap; align-items: center; }
.crumbs a { color: var(--muted); }
.skill-h { font-size: 1.45rem; line-height: 1.2; margin: 6px 0 4px; }
.why { color: var(--muted); font-size: 0.95rem; }
.fcard {
  margin-top: 10px; background: var(--field-card-bg); color: var(--field-card-ink);
  border: 2px solid var(--accent); border-radius: var(--card-radius); padding: 12px 14px 14px;
}
.fcard h3 { font-size: 0.74rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--accent); margin-bottom: 6px; }
.fcard ol { list-style: none; counter-reset: step; padding: 0; display: grid; gap: 9px; }
.fcard li { counter-increment: step; display: grid; grid-template-columns: 30px 1fr; gap: 8px; font-size: 1.16rem; line-height: 1.32; font-weight: 500; }
.fcard li::before { content: counter(step); font-weight: 900; color: var(--accent); font-size: 1.16rem; text-align: right; }
.stop { margin-top: 10px; background: var(--warn-bg); border: 2px solid var(--warn); border-radius: var(--card-radius); padding: 10px 12px; }
.stop h3 { font-size: 0.76rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--warn); margin-bottom: 4px; }
.stop ul { padding-left: 18px; display: grid; gap: 4px; }
.hz { padding-left: 18px; display: grid; gap: 4px; }
.std { display: grid; gap: 8px; }
.std dt { font-size: 0.74rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted); font-weight: 700; }
.std dd { margin: 0; }
.std dd.pass { border-left: 3px solid var(--ok); padding-left: 8px; }
.std dd.fail { border-left: 3px solid var(--warn); padding-left: 8px; }
.actions { margin-top: 12px; display: flex; gap: 8px; flex-wrap: wrap; }
details.art { margin-top: 12px; }
details.art > summary { cursor: pointer; font-weight: 700; padding: 10px 0; list-style: none; display: flex; align-items: center; gap: 8px; min-height: 44px; }
details.art > summary::-webkit-details-marker { display: none; }
details.art > summary::before { content: "+"; display: inline-grid; place-items: center; width: 24px; height: 24px; border: 1px solid var(--line); border-radius: 6px; }
details.art[open] > summary::before { content: "−"; }
.prose { display: grid; gap: 10px; font-size: 1rem; line-height: 1.55; max-width: 66ch; }
.prose ul, .prose ol { padding-left: 20px; display: grid; gap: 4px; }
.srcs { padding-left: 18px; display: grid; gap: 6px; font-size: 0.9rem; }
.rel { display: flex; gap: 6px; flex-wrap: wrap; }
.review { font-size: 0.8rem; color: var(--muted); margin-top: 8px; }

/* ---- Trail ---- */
.gates { display: flex; gap: 6px; overflow-x: auto; padding-bottom: 4px; scrollbar-width: thin; }
.gates .chip { flex: 0 0 auto; }
.legs { display: grid; grid-template-columns: minmax(0, 1fr); gap: 12px; margin-top: 12px; }
.card, .items, .items li { min-width: 0; }
.leg h3 { display: flex; align-items: baseline; gap: 8px; font-size: 1rem; margin-bottom: 4px; }
.leg h3 .cnt { margin-left: auto; font-size: 0.82rem; color: var(--muted); font-weight: 600; }
.teach-list { list-style: none; padding: 0; display: grid; gap: 6px; font-size: 0.92rem; }
.ready { border-color: var(--accent); }

/* ---- Log ---- */
.log { list-style: none; padding: 0; display: grid; gap: 8px; }
.log li { background: var(--card); border: 1px solid var(--line); border-radius: var(--btn-radius); padding: 9px 11px; }
.log .h { display: flex; gap: 8px; align-items: baseline; flex-wrap: wrap; }
.log .d { font-size: 0.8rem; color: var(--muted); margin-left: auto; }
.log .n { font-size: 0.9rem; margin-top: 3px; white-space: pre-wrap; word-break: break-word; }

/* ---- Forms / dialog ---- */
dialog {
  width: min(560px, calc(100vw - 24px)); max-height: calc(100vh - 32px); overflow: auto;
  background: #0f1612; color: #fff; border: 1px solid rgba(255, 255, 255, 0.2); border-radius: var(--card-radius); padding: 16px;
}
:root[data-theme="night"] dialog { background: #000; color: var(--ink); border-color: var(--line); }
:root[data-theme="field"] dialog { background: #fff; color: #000; border: 2px solid #000; }
dialog::backdrop { background: rgba(0, 0, 0, 0.6); }
dialog h2 { font-size: 1.15rem; margin-bottom: 4px; }
.form { display: grid; gap: 11px; margin-top: 10px; }
.form label { display: grid; gap: 4px; font-size: 0.86rem; font-weight: 600; }
.form input[type="text"], .form input[type="date"], .form input[type="number"], .form textarea, .form select {
  min-height: 44px; padding: 8px 10px; border-radius: var(--btn-radius); border: 1px solid var(--line); background: var(--card-2); font-weight: 400; font-size: 1rem;
}
:root:not([data-theme]) .form input, :root:not([data-theme]) .form textarea, :root:not([data-theme]) .form select { border-color: rgba(255,255,255,0.25); background: rgba(255,255,255,0.06); }
.form textarea { min-height: 84px; resize: vertical; }
.form .check { display: flex; gap: 10px; align-items: flex-start; font-weight: 500; }
.form .check input { width: 22px; height: 22px; margin: 1px 0 0; flex: 0 0 auto; }
.form .chips { display: flex; gap: 6px; flex-wrap: wrap; }
.form .err { color: var(--warn); font-size: 0.88rem; min-height: 1em; }
.form .cond { font-size: 0.88rem; background: var(--card-2); border-radius: var(--btn-radius); padding: 8px 10px; }
select { background: var(--card-2); }

/* ---- Lesson / board ---- */
.lesson ol.blocks { list-style: none; padding: 0; display: grid; gap: 10px; counter-reset: none; }
.lesson .blk { border-left: 3px solid var(--accent); padding-left: 10px; }
.lesson .blk h3 { font-size: 1rem; display: flex; gap: 8px; align-items: baseline; }
.lesson .blk .min { font-size: 0.8rem; color: var(--muted); margin-left: auto; }
.lesson .blk ul { padding-left: 18px; display: grid; gap: 3px; margin-top: 4px; }
.qs { padding-left: 20px; display: grid; gap: 8px; }

.table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
.table th, .table td { text-align: left; vertical-align: top; padding: 7px 6px; border-top: 1px solid var(--line); }
.table th { font-size: 0.74rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); }

.word { font-size: 1.12rem; line-height: 1.45; font-weight: 600; }
.standard { list-style: none; padding: 0; display: grid; gap: 6px; }
.standard b { color: var(--accent); }

/* ---- Footer ---- */
footer.site-footer {
  max-width: 760px; margin: 0 auto; padding: 18px 12px 28px; display: flex; flex-wrap: wrap; gap: 10px 16px;
  align-items: center; font-size: 0.86rem; color: var(--muted); border-top: 1px solid var(--line);
}
.footer-link { color: var(--muted); }
.mdl-colophon { width: 100%; margin: 0; font-size: 0.78rem; }


/* ---- Figures: drawn plates on paper, same in every theme and in print ---- */
.figs { display: grid; gap: 14px; }
.fig { margin: 0; display: grid; gap: 8px; }
.panels { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 8px; }
/* drawn plates carry labels: give them room to be read on a phone */
.panels.plates { grid-template-columns: repeat(auto-fill, minmax(min(100%, 230px), 1fr)); }
.pnl { background: #f6f1e4; color: #1d2a20; border-radius: var(--btn-radius); border: 1px solid rgba(0, 0, 0, 0.25); padding: 4px 4px 6px; display: grid; gap: 2px; align-content: start; }
.pnl svg { display: block; width: 100%; height: auto; font-family: Roboto, Helvetica, Arial, sans-serif; }
.pl { font-size: 0.82rem; line-height: 1.25; padding: 0 4px; font-weight: 600; }
.pl b { display: inline-grid; place-items: center; min-width: 1.35em; height: 1.35em; border-radius: 50%; background: #1d2a20; color: #f6f1e4; font-size: 0.78rem; margin-right: 2px; }
.fig figcaption { font-size: 0.9rem; color: var(--muted); display: flex; flex-wrap: wrap; gap: 8px 12px; align-items: center; }
.fig figcaption span { flex: 1 1 260px; }
.k3d { background: #f6f1e4; color: #1d2a20; border-radius: var(--card-radius); padding: 8px; display: grid; gap: 6px; justify-items: center; }
.pnl canvas { display: block; width: 100%; height: auto; aspect-ratio: 1 / 1; }
.k3d-stage { position: relative; width: 100%; max-width: 420px; aspect-ratio: 1 / 1; touch-action: none; cursor: grab; border-radius: var(--btn-radius); outline-offset: 2px; }
.k3d-stage:active { cursor: grabbing; }
.k3d-stage canvas, .k3d-stage svg { position: absolute; inset: 0; width: 100%; height: 100%; display: block; }
.k3d-stage .k3d-ov { pointer-events: none; }
.k3d-stage svg { font-family: Roboto, Helvetica, Arial, sans-serif; }
.k3d .muted { color: #4a5548; }
.k3d-step { font-weight: 700; font-size: 0.95rem; min-height: 1.4em; }
.k3d-ctl { display: flex; gap: 8px; align-items: center; width: 100%; max-width: 420px; }
.k3d-ctl input { flex: 1; min-width: 0; accent-color: #c2410c; height: 32px; }
.k3d .btn { color: #1d2a20; border-color: rgba(0, 0, 0, 0.35); background: #fff; }
:root[data-theme="night"] .pnl, :root[data-theme="night"] .k3d { background: #000; color: var(--ink); border-color: var(--line); }
:root[data-theme="night"] .pnl svg, :root[data-theme="night"] .pnl canvas, :root[data-theme="night"] .k3d-stage { filter: url(#rg-night); }
:root[data-theme="night"] .pl b { background: var(--ink); color: #000; }
:root[data-theme="field"] .pnl { background: #fff; border: 2px solid #000; }
.print-foot { display: none; }

/* ---- Print: any article or lesson becomes a one-page patrol sheet ---- */
@media print {
  :root, :root[data-theme] {
    --bg: #fff; --ink: #000; --muted: #333; --card: #fff; --card-2: #fff; --line: #999;
    --accent: #000; --accent-ink: #fff; --warn: #000; --warn-bg: #fff; --ok: #000;
    --field-card-bg: #fff; --field-card-ink: #000; --shadow: none;
  }
  @page { margin: 12mm; }
  body { background: #fff !important; color: #000; font-size: 11pt; }
  .mdl-home, .top, .site-footer, .no-print, .actions, .search, dialog { display: none !important; }
  main { max-width: none; padding: 0; }
  .card { box-shadow: none; border-color: #999; break-inside: avoid; }
  .fcard { border: 2px solid #000; break-inside: avoid; }
  .fcard li { font-size: 12.5pt; }
  details.art > summary::before { display: none; }
  .prose { max-width: none; font-size: 10pt; line-height: 1.4; }
  a { text-decoration: none; }
  .print-only { display: block !important; }
  .pnl, .pnl svg { -webkit-print-color-adjust: exact; print-color-adjust: exact; }
  .pnl { background: #fff !important; border: 1px solid #999 !important; break-inside: avoid; }
  .pnl svg, .pnl canvas { filter: none !important; }
  .pl b { background: #000 !important; color: #fff !important; -webkit-print-color-adjust: exact; print-color-adjust: exact; }
  .fig { break-inside: avoid; }
  .panels { grid-template-columns: repeat(5, 1fr); }
  .fig figcaption { color: #000; }
  .print-foot { display: flex !important; gap: 12px; align-items: center; margin-top: 14px; padding-top: 8px; border-top: 1px solid #999; break-inside: avoid; font-size: 9pt; color: #000; }
  .pf-qr { width: 24mm; height: 24mm; flex: 0 0 auto; }
  .pf-qr svg { width: 100%; height: 100%; display: block; }
  .pf-t { display: grid; gap: 1px; }
}
.print-only { display: none; }
a[href^="/feedback"]{position:relative}a[href^="/feedback"]::after{content:"";position:absolute;left:0;right:0;top:50%;height:44px;transform:translateY(-50%)}