/* Almanaque del Saber — interfaz v3: tarjetas visuales. Colores por tema en [data-fam]. */
@font-face { font-family: "Young Serif"; src: url(fonts/young-serif-latin-400-normal.woff2) format("woff2"); font-weight: 400; font-display: swap; }
@font-face { font-family: "Instrument Sans"; src: url(fonts/instrument-sans-latin-400-normal.woff2) format("woff2"); font-weight: 400; font-display: swap; }
@font-face { font-family: "Instrument Sans"; src: url(fonts/instrument-sans-latin-500-normal.woff2) format("woff2"); font-weight: 500; font-display: swap; }
@font-face { font-family: "Instrument Sans"; src: url(fonts/instrument-sans-latin-600-normal.woff2) format("woff2"); font-weight: 600; font-display: swap; }
@font-face { font-family: "IBM Plex Mono"; src: url(fonts/ibm-plex-mono-latin-500-normal.woff2) format("woff2"); font-weight: 500; font-display: swap; }

:root {
  --bg: #F6F3EE; --card: #FFFFFF; --ink: #1D2230; --muted: #646B78; --line: #E3DED6;
  --ok: #2E7D4F; --ok-soft: #E3F2E8; --bad: #B4452F; --bad-soft: #F8E5E0;
  --warm: #E8833A; --cool: #3C7DD9; --sun: #F2B33D;
  --a: #3C64C8; --a-soft: #E5ECFA; --a-deep: #1F3A80;   /* color del tema (por defecto) */
  --serif: "Young Serif", Georgia, serif; --sans: "Instrument Sans", system-ui, sans-serif; --mono: "IBM Plex Mono", ui-monospace, monospace;
  --r: 22px; --shadow: 0 1px 2px rgba(20,24,35,.06), 0 8px 24px rgba(20,24,35,.07);
  color-scheme: light;
}
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) {
  --bg: #14181F; --card: #1E242E; --ink: #EEF0F4; --muted: #A2AAB7; --line: #2E3542;
  --ok: #6CCB8F; --ok-soft: #1D3328; --bad: #F08A73; --bad-soft: #3A2320;
  --a-soft: #263452; --a-deep: #BFD0FF; --shadow: 0 1px 2px rgba(0,0,0,.3), 0 10px 28px rgba(0,0,0,.35); color-scheme: dark; } }
:root[data-theme="dark"] { --bg: #14181F; --card: #1E242E; --ink: #EEF0F4; --muted: #A2AAB7; --line: #2E3542; --ok: #6CCB8F; --ok-soft: #1D3328; --bad: #F08A73; --bad-soft: #3A2320; --a-soft: #263452; --a-deep: #BFD0FF; color-scheme: dark; }

/* Familias de temas */
[data-fam="fisica"], [data-fam="astronomia"] { --a: #3C64C8; --a-soft: #E5ECFA; --a-deep: #1F3A80; }
[data-fam="biologia"], [data-fam="salud"] { --a: #2E8B57; --a-soft: #E2F3E8; --a-deep: #18513A; }
[data-fam="quimica"], [data-fam="cocina"] { --a: #C2410C; --a-soft: #FBE9DC; --a-deep: #7A2A0A; }
[data-fam="historia"] { --a: #A0522D; --a-soft: #F5E7DC; --a-deep: #643219; }
[data-fam="arte"] { --a: #8A4FC7; --a-soft: #EFE5FA; --a-deep: #522A80; }
[data-fam="matematica"], [data-fam="tecnologia"] { --a: #0E8A8A; --a-soft: #DDF2F1; --a-deep: #075454; }
[data-fam="geografia"] { --a: #1C7FA6; --a-soft: #DDEFF6; --a-deep: #0D4C66; }
[data-fam="economia"], [data-fam="sociedad"] { --a: #B8860B; --a-soft: #F7EED6; --a-deep: #6E5007; }
[data-fam="literatura"] { --a: #B03A6B; --a-soft: #F8E3EC; --a-deep: #6C2141; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) [data-fam] { --a-soft: color-mix(in srgb, var(--a) 22%, #1E242E); --a-deep: color-mix(in srgb, var(--a) 35%, #FFFFFF); } }

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 17px/1.5 var(--sans); }
body.playing { overflow: hidden; }
.wrap { max-width: 720px; margin: 0 auto; padding: max(14px, env(safe-area-inset-top)) 16px calc(96px + env(safe-area-inset-bottom)); }
button { font: inherit; color: inherit; }
a { color: var(--a); }

.top { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 8px; }
.brand { font: 22px/1 var(--serif); }
.brand span { color: var(--muted); font-size: .75em; }
.pill { border: 1px solid var(--line); background: var(--card); border-radius: 99px; padding: 6px 12px; font-size: 13px; display: inline-flex; align-items: center; gap: 6px; cursor: pointer; }
.pill::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--muted); }
.pill[data-tone="ok"]::before { background: var(--ok); }
.pill[data-tone="warn"]::before { background: var(--sun); }
.pill[data-tone="bad"]::before { background: var(--bad); }
.review { background: var(--a-soft); border-radius: 12px; padding: 10px 14px; font-size: 14px; margin: 8px 0; }

.hello { margin: 18px 0 14px; }
.hello h1 { font: 34px/1.1 var(--serif); margin: 2px 0 0; }
.date { color: var(--muted); margin: 0; text-transform: none; }
.section { font: 22px/1.2 var(--serif); margin: 30px 0 12px; }
.small { font-size: 14px; color: var(--muted); }
.kicker { font: 500 11px/1.2 var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--a-deep); }

/* Tarjetas de lección (mosaico) */
.grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
@media (min-width: 640px) { .grid { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
.tile { display: flex; flex-direction: column; text-align: left; border: 0; padding: 0; border-radius: var(--r); overflow: hidden; background: var(--card); box-shadow: var(--shadow); cursor: pointer; transition: transform .15s ease; }
.tile:active { transform: scale(.98); }
.tile .cover-visual { background: var(--a-soft); aspect-ratio: 4 / 3; display: grid; place-items: center; padding: 10px; }
.tile .cover-visual svg { width: 100%; height: 100%; }
.tile-body { display: flex; flex-direction: column; gap: 4px; padding: 12px 14px 14px; flex: 1; }
.tile-title { font: 18px/1.2 var(--serif); }
.tile-sub { color: var(--muted); font-size: 15px; }
.tile-foot { display: flex; justify-content: space-between; align-items: center; margin-top: auto; padding-top: 8px; font-size: 13px; color: var(--muted); }
.tile .cta { color: var(--a-deep); font-weight: 600; }
.tile.big { width: 100%; }
.tile.big .cover-visual { aspect-ratio: 16 / 9; padding: 16px; }
.tile.big .tile-title { font-size: 28px; }
.tile.big .tile-body { padding: 16px 18px 18px; gap: 6px; }
.tile.big .cta { background: var(--a); color: #fff; padding: 9px 18px; border-radius: 99px; font-size: 15px; }
.placeholder { min-height: 80px; background: linear-gradient(135deg, var(--a-soft), color-mix(in srgb, var(--a) 30%, var(--a-soft))); }
.placeholder .glyph { font-size: clamp(42px, 12vw, 84px); line-height: 1; color: var(--a); font-family: var(--serif); }
.pl-card .visual.hero.placeholder { aspect-ratio: 16 / 9; }

.stat { display: flex; align-items: baseline; gap: 6px; flex-wrap: wrap; margin: 16px 2px; color: var(--muted); }
.stat b { font: 26px/1 var(--serif); color: var(--ink); }
.link { background: none; border: 0; padding: 0; color: var(--a); font-weight: 600; cursor: pointer; text-decoration: underline; text-underline-offset: 3px; }

.chips { display: flex; gap: 8px; overflow-x: auto; padding-bottom: 6px; margin-bottom: 14px; scrollbar-width: none; }
.chip { flex: none; border: 1px solid var(--line); background: var(--card); border-radius: 99px; padding: 7px 14px; font-size: 14px; cursor: pointer; }
.chip[aria-pressed="true"] { background: var(--ink); color: var(--bg); border-color: var(--ink); }

.empty { background: var(--card); border-radius: var(--r); padding: 26px 22px; box-shadow: var(--shadow); text-align: center; }
.empty h2 { font: 22px/1.2 var(--serif); margin: 0 0 6px; }

/* Colección Aprendido */
.summaries { display: grid; gap: 14px; }
@media (min-width: 640px) { .summaries { grid-template-columns: 1fr 1fr; } }
.summary { background: var(--card); border-radius: var(--r); padding: 18px 18px 16px; box-shadow: var(--shadow); border-top: 6px solid var(--a); }
.summary h3 { font: 21px/1.2 var(--serif); margin: 6px 0 10px; }
.summary ul { margin: 0 0 12px; padding-left: 20px; }
.summary li { margin: 6px 0; }
.summary li::marker { color: var(--a); }

/* Cuenta */
.panel { background: var(--card); border-radius: var(--r); padding: 20px; box-shadow: var(--shadow); }
.form { display: grid; gap: 8px; margin: 12px 0; }
.form label { font-size: 14px; color: var(--muted); }
input { font: inherit; padding: 12px 14px; border-radius: 12px; border: 1px solid var(--line); background: var(--bg); color: var(--ink); }
.kv { display: grid; grid-template-columns: max-content 1fr; gap: 6px 16px; margin: 16px 0 0; font-size: 15px; }
.kv dt { color: var(--muted); } .kv dd { margin: 0; }
.row { display: flex; gap: 10px; flex-wrap: wrap; }

.btn { border: 0; background: var(--a); color: #fff; border-radius: 99px; padding: 12px 22px; font-weight: 600; cursor: pointer; }
.btn.ghost { background: transparent; color: var(--ink); border: 1px solid var(--line); }
.btn:disabled { opacity: .45; cursor: default; }

/* Barra inferior */
.tabbar { position: fixed; left: 0; right: 0; bottom: 0; display: grid; grid-template-columns: repeat(4, 1fr); background: color-mix(in srgb, var(--card) 92%, transparent); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); border-top: 1px solid var(--line); padding: 6px 4px calc(6px + env(safe-area-inset-bottom)); z-index: 5; }
.tabbar button { background: none; border: 0; display: flex; flex-direction: column; align-items: center; gap: 2px; font-size: 12px; color: var(--muted); padding: 6px 0; cursor: pointer; position: relative; }
.tabbar .ico { font-size: 19px; line-height: 1; }
.tabbar button[aria-current="page"] { color: var(--ink); font-weight: 600; }
.tabbar .n:not(:empty) { position: absolute; top: 0; left: calc(50% + 8px); background: var(--warm); color: #fff; border-radius: 99px; font-size: 10px; padding: 1px 6px; font-weight: 600; }

/* Reproductor de tarjetas a pantalla completa */
.player { position: fixed; inset: 0; z-index: 20; background: var(--a-soft); display: flex; flex-direction: column; padding: max(10px, env(safe-area-inset-top)) 16px calc(14px + env(safe-area-inset-bottom)); }
.player[hidden] { display: none; }
.pl-top, .pl-card, .pl-nav { width: 100%; max-width: 560px; margin: 0 auto; }
.bars { display: flex; gap: 4px; }
.bars i { flex: 1; height: 4px; border-radius: 4px; background: color-mix(in srgb, var(--a) 22%, transparent); }
.bars i.done, .bars i.now { background: var(--a); }
.pl-head { display: flex; justify-content: space-between; align-items: center; margin: 10px 2px 8px; }
.x { background: var(--card); border: 0; width: 36px; height: 36px; border-radius: 50%; cursor: pointer; font-size: 15px; box-shadow: var(--shadow); }
.pl-card { flex: 1; overflow-y: auto; background: var(--card); border-radius: 28px; box-shadow: var(--shadow); padding: 22px 22px 18px; display: flex; flex-direction: column; animation: enter .28s ease; -webkit-overflow-scrolling: touch; }
@keyframes enter { from { opacity: 0; transform: translateX(14px); } to { opacity: 1; transform: none; } }
@media (prefers-reduced-motion: reduce) { .pl-card { animation: none; } .tile { transition: none; } }
.pl-card h1 { font: 32px/1.12 var(--serif); margin: 6px 0 10px; }
.pl-card h2 { font: 26px/1.18 var(--serif); margin: 8px 0 10px; }
.pl-card .lead { font-size: 19px; line-height: 1.5; margin: 0 0 10px; }
.pl-card .hint { color: var(--muted); font-size: 14px; margin-top: auto; padding-top: 12px; }
.pl-card .src { color: var(--muted); font-size: 12.5px; margin-top: auto; padding-top: 14px; }
.visual { background: var(--a-soft); border-radius: 20px; padding: 12px; margin-bottom: 16px; display: grid; place-items: center; }
.visual svg { width: 100%; height: auto; max-height: 34vh; }
.visual.hero svg { max-height: 40vh; }
.badge { align-self: flex-start; background: var(--a-soft); color: var(--a-deep); border-radius: 99px; padding: 5px 12px; font: 500 12px/1 var(--mono); letter-spacing: .06em; text-transform: uppercase; }
.opts { display: grid; gap: 10px; margin: 8px 0 12px; }
.opt { text-align: left; background: var(--bg); border: 2px solid var(--line); border-radius: 16px; padding: 14px 16px; font-size: 17px; cursor: pointer; }
.opt:not([disabled]):hover { border-color: var(--a); }
.opt.right { border-color: var(--ok); background: var(--ok-soft); }
.opt.wrong { border-color: var(--bad); background: var(--bad-soft); }
.opt[disabled] { cursor: default; }
.feedback { border-radius: 14px; padding: 12px 14px; margin: 0; font-size: 16px; }
.feedback.ok { background: var(--ok-soft); } .feedback.bad { background: var(--bad-soft); }
.reveal { align-self: flex-start; margin-top: 8px; }
.revealed { background: var(--a-soft); border-radius: 16px; padding: 14px 16px; font-size: 18px; animation: enter .28s ease; }
.revealed p { margin: 0; }
.points { padding-left: 22px; margin: 4px 0 14px; font-size: 18px; }
.points li { margin: 10px 0; }
.points li::marker { color: var(--a); font-weight: 700; }
.saved { color: var(--ok); font-weight: 600; margin: 4px 0 10px; }
.sources { font-size: 14px; color: var(--muted); margin-top: auto; }
.sources summary { cursor: pointer; }
.pl-nav { display: flex; justify-content: space-between; gap: 10px; padding-top: 12px; }
.pl-nav .btn { min-width: 120px; }
.pl-nav .btn:not(.ghost) { flex: 1; max-width: 300px; margin-left: auto; }

.toast { position: fixed; left: 50%; bottom: calc(86px + env(safe-area-inset-bottom)); transform: translateX(-50%); background: var(--ink); color: var(--bg); padding: 10px 16px; border-radius: 12px; z-index: 30; font-size: 15px; }

/* Ilustraciones SVG: solo clases, sin colores literales en el contenido */
.as-svg { display: block; }
.as-svg .as-svg__ink, .as-svg__ink { fill: none; stroke: var(--ink); stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
.as-svg__muted { fill: none; stroke: var(--muted); }
.as-svg__accent { stroke: var(--a); }
.as-svg__fill { fill: var(--a); stroke: none; }
.as-svg__soft { fill: color-mix(in srgb, var(--a) 18%, transparent); stroke: none; }
.as-svg__warm { fill: var(--warm); stroke: none; }
.as-svg__cool { fill: var(--cool); stroke: none; }
.as-svg__sun { fill: var(--sun); stroke: none; }
.as-svg__surface { fill: transparent; stroke: none; }
.as-svg__warmline { fill: none; stroke: var(--warm); stroke-width: 3; stroke-linecap: round; }
.as-svg__coolline { fill: none; stroke: var(--cool); stroke-width: 3; stroke-linecap: round; }
.as-svg text, .as-svg__label { fill: var(--ink); stroke: none; font-family: var(--sans); }
text.as-svg__muted { fill: var(--muted); stroke: none; }
.as-svg marker path { fill: var(--a); stroke: none; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }