/* Fita · TD1 (S3a). Estilos de la página TD1 de la Fita publicada, trasladados casi tal cual.
   Cambia solo el principio: los colores y las fuentes salen de fita.css, sin fuentes externas. */
/* Layout: una columna de trabajo (máx. 1100px), con la misma montaña que tu app de estudio: el cielo cambia con la hora y la huella sube hacia el examen según las horas hechas. Debajo, pestañas fijas y paneles. */
:root {
  /* Colores de la página antigua de TD1 leídos de fita.css (Diseño base). Solo se traduce el nombre:
     la página sigue usando --bg, --ink, --accent… y el color real viene del sistema común. */
  --bg: var(--fondo); --surface: var(--superficie); --surface-2: var(--superficie-2); --ink: var(--tinta); --muted: var(--tinta-2);
  --line: var(--linea); --chip: var(--superficie-2);
  --accent: var(--primario); --accent-soft: var(--primario-suave); --on-accent: var(--on-primario); --on-band: var(--on-primario);
  --glacier: var(--acento); --glacier-soft: var(--superficie-2);
  --pine: var(--ok); --pine-soft: var(--superficie-2);
  --gold: var(--aviso); --gold-soft: var(--aviso-suave);
  --violet: var(--area-rosa); --violet-soft: var(--superficie-2);
  --ok-soft: var(--superficie-2); --warn: var(--aviso); --warn-soft: var(--aviso-suave); --bad: var(--error); --bad-soft: var(--error-suave);
  --shadow: var(--sombra-papel);
  --scene-dim: .9;
  --f-display: var(--font-titulo);
  --f-body: var(--font-texto);
  --r: 16px;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { background: var(--bg); color: var(--ink); font-family: var(--f-body); font-size: 16px; line-height: 1.5; }
a { color: var(--accent); text-underline-offset: 2px; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }
.wrap { max-width: 1100px; margin: 0 auto; padding-inline: 16px; padding-block: 14px 72px; }
h1, h2, h3 { margin: 0; text-wrap: balance; }
h2 { font: 800 1.6rem/1.02 var(--f-display); letter-spacing: .01em; text-transform: uppercase; }
h3 { font: 700 1.05rem/1.3 var(--f-body); }
p { margin: 0; }
.muted { color: var(--muted); }
.small { font-size: .875rem; }
.label { font: 700 .74rem/1.25 var(--f-body); letter-spacing: .09em; text-transform: uppercase; color: var(--muted); }
.note { font-size: .875rem; color: var(--muted); max-width: 75ch; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }

/* montaña */
.hero { border-radius: 22px; overflow: hidden; background: var(--surface); box-shadow: var(--shadow); }
.scene { position: relative; height: clamp(200px, 30vw, 320px); background: var(--chip); }
.scene svg { position: absolute; inset: 0; width: 100%; height: 100%; display: block; filter: brightness(var(--scene-dim)); }
.scene-text { position: absolute; left: 18px; top: 14px; max-width: 62%; display: grid; gap: 4px; color: var(--scene-ink); text-shadow: 0 1px 3px rgba(0, 0, 0, .35); }
.hello { font: 900 clamp(2.2rem, 7vw, 3.4rem)/.92 var(--f-display); letter-spacing: .005em; }
.hello-date { font-weight: 700; font-size: 1rem; }
.scene .pulse { transform-box: fill-box; transform-origin: center; }
.hud { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); }
.hud > .st { padding: 14px 18px 12px; min-width: 0; display: grid; gap: 4px; align-content: start; }
.hud > .st + .st { border-left: 1px solid var(--line); }
.big { font: 900 2.4rem/.95 var(--f-display); font-variant-numeric: tabular-nums; letter-spacing: .01em; }
.big small { font-size: .5em; font-weight: 800; color: var(--muted); margin-left: 4px; letter-spacing: .03em; }
.big2 { font: 900 1.8rem/1 var(--f-display); letter-spacing: .01em; text-wrap: balance; }
.big2.bad { color: var(--bad); } .big2.ok { color: var(--ok); }
.meter { height: 8px; border-radius: 99px; background: var(--chip); overflow: hidden; margin-block: 2px; }
.meter i { display: block; height: 100%; border-radius: 99px; background: linear-gradient(90deg, var(--accent), var(--gold)); }
.hud-foot { grid-column: 1 / -1; border-top: 1px solid var(--line); padding: 10px 18px 12px; display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }
.links { display: inline-flex; gap: 14px; margin-left: auto; font-size: .9rem; font-weight: 700; }
@media (max-width: 680px) {
  .hud { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
  .hud > .st:nth-child(3) { grid-column: 1 / -1; border-left: 0; border-top: 1px solid var(--line); }
  .big { font-size: 2.1rem; }
  .big2 { font-size: clamp(1.25rem, 6vw, 1.8rem); }
}

/* pestañas */
.tabs { position: sticky; top: env(safe-area-inset-top, 0px); z-index: 5; display: flex; gap: 4px; overflow-x: auto; scrollbar-width: none; background: var(--bg); padding-block: 12px 10px; margin-top: 6px; }
.tabs::-webkit-scrollbar { display: none; }
.tabs::after { content: ""; position: sticky; right: 0; flex: 0 0 28px; background: linear-gradient(90deg, transparent, var(--bg) 70%); }
.tab { font: 800 1.08rem/1 var(--f-display); letter-spacing: .04em; text-transform: uppercase; border: 0; background: transparent; color: var(--muted); padding: 9px 14px; border-radius: 999px; cursor: pointer; white-space: nowrap; }
.tab:hover { color: var(--ink); }
.tab[aria-selected="true"] { background: var(--ink); color: var(--bg); }

/* bloques */
.panel { display: grid; gap: 18px; padding-top: 6px; }
.panel > *, .stack > *, .cols > * { min-width: 0; }
.cols { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 18px; align-items: start; }
.stack { display: grid; gap: 10px; }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r); padding: 14px 16px; min-width: 0; }
.empty { border: 1.5px dashed var(--line); border-radius: var(--r); padding: 16px; color: var(--muted); background: var(--surface); }
.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chip { display: inline-flex; align-items: center; gap: 4px; background: var(--chip); color: var(--ink); border-radius: 999px; padding: 2px 10px; font-size: .82rem; white-space: nowrap; font-variant-numeric: tabular-nums; }
.chip.accent { background: var(--accent-soft); color: var(--accent); }
.chip.ok { background: var(--ok-soft); color: var(--ok); }
.chip.warn { background: var(--warn-soft); color: var(--warn); }
.chip.bad { background: var(--bad-soft); color: var(--bad); }
.chip b { font-weight: 700; }
.code { font: 900 .95rem/1.4 var(--f-display); letter-spacing: .05em; background: var(--ink); color: var(--bg); border-radius: 7px; padding: 0 7px; }
.cat { font: 900 .95rem/1 var(--f-display); width: 1.7em; height: 1.7em; display: inline-grid; place-items: center; border-radius: 7px; flex: none; }
.cat.A { background: var(--accent); color: var(--on-accent); }
.cat.B { background: var(--chip); color: var(--ink); }
.cat.C { background: var(--gold-soft); color: var(--gold); }
.cat.D { background: var(--pine-soft); color: var(--pine); }
.cat.E { background: var(--violet-soft); color: var(--violet); }
button.btn { font: 700 .92rem/1.2 var(--f-body); border: 1.5px solid var(--accent); color: var(--accent); background: transparent; border-radius: 11px; padding: 7px 14px; cursor: pointer; }
button.btn.solid { background: var(--accent); color: var(--on-accent); }
button.btn.quiet { border-color: var(--line); color: var(--muted); }
button.btn[disabled] { opacity: .5; cursor: default; }
.alert { border-radius: var(--r); padding: 10px 14px; font-weight: 700; display: flex; gap: 10px; align-items: flex-start; }
.alert.bad { background: var(--bad-soft); color: var(--bad); }
.alert.ok { background: var(--ok-soft); color: var(--ok); }
.alert.warn { background: var(--warn-soft); color: var(--warn); }
.todo { display: grid; gap: 8px; border-left: 4px solid var(--gold); }
.todo.done { border-left-color: var(--ok); opacity: .72; }
.todo-head { display: flex; gap: 10px; justify-content: space-between; align-items: flex-start; }
.todo-head h3 { font: 700 1rem/1.3 var(--f-body); }
.draft { white-space: pre-wrap; background: var(--surface-2); border: 1px dashed var(--line); border-radius: 11px; padding: 10px 12px; font-size: .92rem; }
.row-actions { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.filters { display: flex; gap: 6px; flex-wrap: wrap; align-items: center; }
.filters button { font: inherit; font-size: .88rem; border: 1.5px solid var(--line); background: var(--surface); color: var(--ink); border-radius: 999px; padding: 4px 12px; cursor: pointer; }
.filters button[aria-pressed="true"] { background: var(--ink); color: var(--bg); border-color: var(--ink); }
.group { display: grid; gap: 8px; }
.group-head { display: flex; gap: 10px; align-items: baseline; flex-wrap: wrap; }
.task { display: grid; gap: 6px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--r); padding: 11px 14px; border-left: 4px solid var(--line); }
.task.s-bloqueada, .task.s-repetir { border-left-color: var(--bad); }
.task.s-en-curso, .task.s-lista { border-left-color: var(--glacier); }
.task.done { border-left-color: var(--ok); opacity: .8; }
.task.late { box-shadow: inset 0 0 0 1px var(--bad); }
.t-main { display: flex; gap: 9px; align-items: flex-start; }
.t-main a, .t-main strong { font-weight: 700; color: var(--ink); text-decoration: none; }
.t-main a:hover { text-decoration: underline; }
.t-meta { display: flex; flex-wrap: wrap; gap: 6px; }
.t-who { font-size: .88rem; color: var(--muted); }
.t-foot { display: flex; justify-content: space-between; gap: 10px; flex-wrap: wrap; align-items: center; }
.risk { color: var(--bad); font-size: .88rem; }
.dep { color: var(--muted); font-size: .88rem; }
.conflict { border-left: 4px solid var(--warn); display: grid; gap: 8px; }
.conflict.baja { border-left-color: var(--line); }
.conflict.alta, .conflict.pendiente { border-left-color: var(--bad); }
.kv { display: grid; grid-template-columns: minmax(120px, 190px) minmax(0, 1fr); gap: 4px 12px; font-size: .93rem; margin: 0; }
.kv dt { color: var(--muted); }
.kv dd { margin: 0; min-width: 0; }
@media (max-width: 520px) { .kv { grid-template-columns: minmax(0, 1fr); } .kv dd { margin-bottom: 6px; } }
.dates { display: grid; gap: 4px; }
.date { display: grid; grid-template-columns: 96px minmax(0, 1fr); gap: 12px; padding: 8px 0; border-bottom: 1px solid var(--line); }
.date.past { opacity: .5; }
.date time { font: 800 1.1rem/1.2 var(--f-display); font-variant-numeric: tabular-nums; }
.date.k-corte time, .date.k-examen time { color: var(--accent); }
.week { display: grid; gap: 6px; }
.week-head { display: flex; justify-content: space-between; gap: 10px; align-items: baseline; flex-wrap: wrap; }
.week ul { margin: 0; padding-left: 0; list-style: none; display: grid; gap: 4px; }
.week li { display: grid; grid-template-columns: 74px 48px minmax(0, 1fr); gap: 8px; font-size: .92rem; align-items: baseline; }
.week li.done { opacity: .5; text-decoration: line-through; }
.bar { height: 8px; background: var(--chip); border-radius: 999px; overflow: hidden; }
.bar i { display: block; height: 100%; background: linear-gradient(90deg, var(--accent), var(--gold)); border-radius: 999px; }
.weights { display: grid; gap: 4px; }
.weights div { display: grid; grid-template-columns: minmax(0, 1fr) 44px; gap: 8px; align-items: center; font-size: .88rem; }
.weights .w { height: 6px; background: var(--chip); border-radius: 999px; overflow: hidden; grid-column: 1 / -1; }
.weights .w i { display: block; height: 100%; background: var(--glacier); }
.credit { display: grid; gap: 12px; }
.credit-head { display: flex; gap: 10px; align-items: baseline; flex-wrap: wrap; }
ul.plain { margin: 0; padding-left: 1.1em; display: grid; gap: 3px; }
.profile-grid { display: grid; gap: 10px; }
.profile-grid h4 { margin: 0 0 2px; font: 700 .74rem/1.25 var(--f-body); text-transform: uppercase; letter-spacing: .08em; color: var(--muted); }
.session { display: grid; gap: 16px; }
.sec { display: grid; gap: 6px; }
.sec h3 { display: flex; gap: 10px; align-items: baseline; }
.sec h3 .n { font: 900 1.15rem/1 var(--f-display); color: var(--accent); }
.visual { overflow-x: auto; }
.steps { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; counter-reset: s; }
.steps li { counter-increment: s; display: grid; grid-template-columns: 30px minmax(0, 1fr); gap: 10px; align-items: start; background: var(--surface-2); border-radius: 11px; padding: 8px 10px; }
.steps li::before { content: counter(s); font: 900 1.15rem/1.2 var(--f-display); color: var(--accent); }
table.t { border-collapse: collapse; width: 100%; font-size: .9rem; }
table.t th, table.t td { border-bottom: 1px solid var(--line); padding: 6px 8px; text-align: left; vertical-align: top; }
table.t th { font: 700 .72rem/1.2 var(--f-body); text-transform: uppercase; letter-spacing: .08em; color: var(--muted); border-bottom: 1.5px solid var(--ink); }
.quiz { display: grid; gap: 12px; }
.q { border: 1px solid var(--line); border-radius: 13px; padding: 10px 12px; margin: 0; display: grid; gap: 6px; }
.q legend { font-weight: 700; padding: 0 4px; }
.q .qc { color: var(--muted); font-weight: 400; font-size: .82rem; margin-left: 6px; }
.opt { display: flex; gap: 8px; align-items: flex-start; padding: 6px 8px; border-radius: 9px; cursor: pointer; }
.opt:hover { background: var(--surface-2); }
.opt.right { background: var(--ok-soft); }
.opt.wrong { background: var(--bad-soft); }
.expl { font-size: .9rem; }
.expl.ok { color: var(--ok); }
.expl.bad { color: var(--bad); }
details.qa { border-bottom: 1px solid var(--line); padding: 6px 0; }
details.qa summary { cursor: pointer; font-weight: 700; }
.levels { display: grid; gap: 8px; }
.level { display: grid; grid-template-columns: 56px minmax(0, 1fr); gap: 12px; align-items: start; }
.level b { font: 900 1.8rem/1 var(--f-display); color: var(--accent); }
.profile { min-width: 0; margin: 0; background: var(--surface); border: 1px solid var(--line); border-radius: var(--r); padding: 12px 12px 6px; }
.profile figcaption { font: 700 .74rem/1.25 var(--f-body); text-transform: uppercase; letter-spacing: .09em; color: var(--muted); display: flex; gap: 14px; flex-wrap: wrap; align-items: center; }
.key { display: inline-flex; gap: 6px; align-items: center; text-transform: none; letter-spacing: 0; font: 400 .85rem/1.2 var(--f-body); }
.key i { width: 18px; height: 3px; display: inline-block; border-radius: 2px; }
.chart-scroll { overflow-x: auto; }
.chart-scroll svg { display: block; width: 100%; min-width: 560px; height: auto; }
.headline { display: grid; gap: 4px; }

/* efectos */
.fx { position: fixed; inset: 0; pointer-events: none; z-index: 60; overflow: hidden; }
.float { position: absolute; transform: translate(-50%, -50%); font: 900 1.5rem/1 var(--f-display); color: var(--accent); text-shadow: 0 1px 0 var(--surface), 0 0 8px var(--surface); white-space: nowrap; }
.flake { position: absolute; width: 7px; height: 7px; margin: -3.5px 0 0 -3.5px; border-radius: 50%; }
@keyframes rise { 0% { opacity: 0; transform: translate(-50%, -20%) scale(.8); } 18% { opacity: 1; transform: translate(-50%, -70%) scale(1.06); } 100% { opacity: 0; transform: translate(-50%, -210%) scale(1); } }
@keyframes flake { to { transform: translate(var(--dx), var(--dy)) scale(.3); opacity: 0; } }
@keyframes pulse { 0% { opacity: .9; transform: scale(1); } 100% { opacity: 0; transform: scale(2.6); } }
@media (prefers-reduced-motion: no-preference) {
  .float { animation: rise 1.15s ease-out forwards; }
  .flake { animation: flake .95s ease-out forwards; }
  .scene .pulse { animation: pulse 2.2s ease-out infinite; }
  .meter i, .bar i { transition: width .35s ease; }
  .tab, button.btn, .filters button { transition: background .15s, color .15s; }
}
@media (max-width: 560px) {
  .tab { font-size: 1rem; padding: 8px 11px; }
}