/* Pomodoro · estilos. Móvil primero; tokens en :root, modo oscuro por sistema. */

:root {
  color-scheme: light dark;
  --fondo: #faf6f3;
  --superficie: #ffffff;
  --texto: #1d1b1a;
  --texto-suave: #5f5853;
  --borde: #e6ddd6;
  --sobre-acento: #ffffff;

  --acento-pomodoro: #b7410e;
  --acento-corto: #1f7a5a;
  --acento-largo: #2f5fa8;
  --acento: var(--acento-pomodoro);

  --radio: 16px;
  --radio-boton: 999px;
  --sombra: 0 1px 2px rgb(0 0 0 / .06), 0 8px 24px rgb(0 0 0 / .06);
  --fuente: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --transicion: 240ms cubic-bezier(.2, .8, .2, 1);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --fondo: #141210;
    --superficie: #1f1c1a;
    --texto: #f3eeea;
    --texto-suave: #b3aaa3;
    --borde: #36302c;
    --sobre-acento: #1a1310;
    --acento-pomodoro: #f08a5d;
    --acento-corto: #5cc49a;
    --acento-largo: #86aef0;
    --sombra: 0 1px 2px rgb(0 0 0 / .4), 0 8px 24px rgb(0 0 0 / .3);
  }
}

:root[data-theme="dark"] {
  --fondo: #141210;
  --superficie: #1f1c1a;
  --texto: #f3eeea;
  --texto-suave: #b3aaa3;
  --borde: #36302c;
  --sobre-acento: #1a1310;
  --acento-pomodoro: #f08a5d;
  --acento-corto: #5cc49a;
  --acento-largo: #86aef0;
  --sombra: 0 1px 2px rgb(0 0 0 / .4), 0 8px 24px rgb(0 0 0 / .3);
}

body[data-modo="corto"] { --acento: var(--acento-corto); }
body[data-modo="largo"] { --acento: var(--acento-largo); }

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  min-height: 100dvh;
  font-family: var(--fuente);
  color: var(--texto);
  background: var(--fondo);
  background: color-mix(in srgb, var(--acento) 9%, var(--fondo));
  transition: background-color var(--transicion);
  -webkit-tap-highlight-color: transparent;
}

button, input { font: inherit; color: inherit; }
button { cursor: pointer; touch-action: manipulation; }

:focus-visible { outline: 3px solid var(--acento); outline-offset: 3px; }

.solo-lector {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

/* ---------- Estructura ---------- */

.app {
  max-width: 480px;
  min-height: 100dvh;
  margin: 0 auto;
  padding:
    max(12px, env(safe-area-inset-top))
    max(16px, env(safe-area-inset-right))
    max(20px, env(safe-area-inset-bottom))
    max(16px, env(safe-area-inset-left));
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.barra { display: flex; align-items: center; justify-content: space-between; min-height: 48px; }

.marca {
  display: flex; align-items: center; gap: 8px;
  margin: 0; font-size: 1.125rem; font-weight: 650; letter-spacing: -.01em;
}

.marca-icono { width: 24px; height: 24px; fill: none; stroke: var(--acento); stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.marca-icono circle { fill: var(--acento); stroke: none; }

/* ---------- Botones ---------- */

.boton-icono {
  display: inline-grid; place-items: center;
  width: 48px; height: 48px;
  border: 0; border-radius: var(--radio-boton);
  background: transparent; color: var(--texto);
  transition: background-color var(--transicion), transform var(--transicion);
}
.boton-icono:hover { background: color-mix(in srgb, var(--texto) 8%, transparent); }
.boton-icono:active { transform: scale(.94); }
.boton-icono svg { width: 24px; height: 24px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.boton-icono.grande { width: 56px; height: 56px; background: var(--superficie); box-shadow: var(--sombra); }

.boton-principal {
  min-width: 160px; min-height: 64px; padding: 0 32px;
  border: 0; border-radius: var(--radio-boton);
  background: var(--acento); color: var(--sobre-acento);
  font-size: 1.25rem; font-weight: 700; letter-spacing: .02em;
  box-shadow: 0 6px 20px color-mix(in srgb, var(--acento) 35%, transparent);
  transition: background-color var(--transicion), transform var(--transicion);
}
.boton-principal:active { transform: scale(.97); }
.boton-principal.compacto { min-width: 120px; min-height: 48px; font-size: 1rem; box-shadow: none; }

.boton-secundario {
  min-height: 48px; padding: 0 16px;
  border: 1px solid var(--borde); border-radius: var(--radio-boton);
  background: transparent; color: var(--texto-suave); font-size: .9375rem;
}

/* ---------- Selector de fase ---------- */

.fases {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 4px;
  padding: 4px; border-radius: var(--radio-boton);
  background: color-mix(in srgb, var(--texto) 6%, transparent);
}

.fase {
  min-height: 44px; padding: 0 8px;
  border: 0; border-radius: var(--radio-boton);
  background: transparent; color: var(--texto-suave);
  font-size: .9375rem; font-weight: 600; white-space: nowrap;
  transition: background-color var(--transicion), color var(--transicion);
}
.fase[aria-selected="true"] { background: var(--superficie); color: var(--texto); box-shadow: var(--sombra); }

/* ---------- Reloj ---------- */

.reloj { flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 20px; }

.anillo { position: relative; width: min(82vw, 340px); aspect-ratio: 1; }
.anillo svg { width: 100%; height: 100%; transform: rotate(-90deg); }
.anillo circle { fill: none; stroke-width: 4; }
.anillo-fondo { stroke: color-mix(in srgb, var(--acento) 16%, transparent); }
.anillo-avance { stroke: var(--acento); stroke-linecap: round; transition: stroke-dashoffset 1s linear, stroke var(--transicion); }

.anillo-centro { position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; }

.tiempo {
  margin: 0;
  font-size: clamp(3.5rem, 19vw, 5.5rem);
  font-weight: 300; line-height: 1; letter-spacing: -.03em;
  font-variant-numeric: tabular-nums;
}

.etiqueta { margin: 10px 0 0; color: var(--texto-suave); font-size: 1rem; }

.ciclo { display: flex; gap: 10px; margin: 0; padding: 0; list-style: none; flex-wrap: wrap; justify-content: center; }
.ciclo li {
  width: 12px; height: 12px; border-radius: 50%;
  border: 2px solid var(--acento-pomodoro);
  transition: background-color var(--transicion);
}
.ciclo li.hecho { background: var(--acento-pomodoro); }

/* ---------- Controles ---------- */

.controles { display: flex; align-items: center; justify-content: center; gap: 20px; }

.resumen { margin: 0; text-align: center; color: var(--texto-suave); font-size: .9375rem; font-variant-numeric: tabular-nums; }

/* ---------- Hoja de ajustes ---------- */

.hoja {
  width: 100%; max-width: 480px; max-height: 92dvh;
  margin: auto auto 0; padding: 0;
  border: 0; border-radius: 24px 24px 0 0;
  background: var(--superficie); color: var(--texto);
  box-shadow: 0 -8px 40px rgb(0 0 0 / .2);
}
.hoja::backdrop { background: rgb(0 0 0 / .45); }
.hoja[open] { animation: subir var(--transicion); }

@keyframes subir { from { transform: translateY(24px); opacity: 0; } to { transform: none; opacity: 1; } }

@media (min-width: 560px) {
  .hoja { margin: auto; border-radius: 24px; }
}

.hoja-contenido {
  display: flex; flex-direction: column; gap: 20px;
  padding: 8px 16px max(20px, env(safe-area-inset-bottom));
}

.hoja-cabecera { display: flex; align-items: center; justify-content: space-between; position: sticky; top: 0; background: var(--superficie); padding-top: 8px; z-index: 1; }
.hoja-cabecera h2 { margin: 0; font-size: 1.25rem; }

.grupo { margin: 0; padding: 0; border: 0; display: flex; flex-direction: column; gap: 8px; }
.grupo legend { padding: 0; margin-bottom: 8px; font-size: .8125rem; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: var(--texto-suave); }

.tecnicas { display: grid; gap: 8px; }

.tecnica {
  display: grid; grid-template-columns: auto 1fr; gap: 2px 12px; align-items: center;
  padding: 12px 14px; min-height: 56px;
  border: 1px solid var(--borde); border-radius: var(--radio);
  cursor: pointer;
  transition: border-color var(--transicion), background-color var(--transicion);
}
.tecnica input { grid-row: span 2; width: 20px; height: 20px; margin: 0; accent-color: var(--acento); }
.tecnica-nombre { font-weight: 650; }
.tecnica-nombre small { font-weight: 500; color: var(--texto-suave); font-variant-numeric: tabular-nums; }
.tecnica-desc { grid-column: 2; font-size: .875rem; color: var(--texto-suave); }
.tecnica:has(input:checked) { border-color: var(--acento); background: color-mix(in srgb, var(--acento) 8%, transparent); }

.tiempos { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }

.campo { display: flex; flex-direction: column; gap: 6px; font-size: .875rem; color: var(--texto-suave); }
.campo input {
  min-height: 48px; padding: 0 12px;
  border: 1px solid var(--borde); border-radius: 12px;
  background: var(--fondo); color: var(--texto);
  font-size: 1.125rem; font-variant-numeric: tabular-nums;
}
.campo input:focus-visible { outline-offset: 0; }
.campo-nota { font-size: .8125rem; }

.interruptor {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  min-height: 48px; cursor: pointer;
}
.interruptor input {
  appearance: none; -webkit-appearance: none; flex: none;
  position: relative; width: 48px; height: 28px; margin: 0;
  border-radius: 999px; background: var(--borde);
  transition: background-color var(--transicion);
}
.interruptor input::after {
  content: ""; position: absolute; top: 3px; left: 3px;
  width: 22px; height: 22px; border-radius: 50%;
  background: #fff; box-shadow: 0 1px 3px rgb(0 0 0 / .3);
  transition: transform var(--transicion);
}
.interruptor input:checked { background: var(--acento); }
.interruptor input:checked::after { transform: translateX(20px); }

.ayuda { margin: 0; font-size: .875rem; color: var(--texto-suave); }
.ayuda:empty { display: none; }

.hoja-pie { display: flex; flex-wrap: wrap; gap: 12px; justify-content: space-between; align-items: center; padding-top: 4px; }

/* ---------- Pantallas bajas (celular en horizontal) ---------- */

@media (max-height: 560px) and (orientation: landscape) {
  .app { max-width: 820px; display: grid; grid-template-columns: 1fr 1fr; grid-template-rows: auto auto 1fr auto; column-gap: 32px; row-gap: 12px; }
  .barra, .fases { grid-column: 1; }
  .reloj { grid-column: 2; grid-row: 1 / 5; }
  .controles { grid-column: 1; align-self: end; }
  .resumen { grid-column: 1; }
  .anillo { width: min(70dvh, 300px); }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 1ms !important; transition-duration: 1ms !important; }
}