/* ==========================================================================
   ui-system.css — PMUS Digital · componentes reutilizables (.ui-*)
   Mundo visual v2 «Escenas de ciudad»: suelo claro, capítulos marinos (.panel), chips de línea,
   estaciones y paradas seleccionables. Solo consume tokens.
   ========================================================================== */

/* ---------- Base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html {
  -webkit-text-size-adjust: 100%;
  scroll-padding-top: calc(var(--header-height) + 24px);
  scrollbar-color: var(--brand-navy) var(--brand-cream);
}
/* Sin scroll-behavior: smooth. Lenis fija la posición en cada fotograma y el suavizado nativo
   pelearía con él: el scroll se quedaría atascado y saltaría de golpe al soltar. El suavizado
   lo aporta Lenis; sin JS, el salto de ancla es instantáneo y correcto. */
.no-js { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-ink);
  font-family: var(--font-sans);
  font-size: var(--font-size-base);
  line-height: var(--line-base);
  font-variation-settings: "wdth" var(--wdth-normal);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  caret-color: var(--brand-purple);
}
::selection { background: var(--brand-aqua); color: var(--brand-navy); }
img, svg, video { max-width: 100%; height: auto; display: block; }
h1, h2, h3, h4 { margin: 0; font-weight: var(--font-weight-semibold); line-height: var(--line-snug); letter-spacing: var(--tracking-tight); text-wrap: balance; }
p { margin: 0 0 var(--space-4); max-width: 68ch; }
p:last-child { margin-bottom: 0; }
a { color: inherit; text-underline-offset: 4px; text-decoration-thickness: 1.5px; text-decoration-color: var(--color-accent-2); }
a:hover { text-decoration-color: currentColor; }
:focus-visible { outline: 3px solid var(--color-focus); outline-offset: 3px; border-radius: var(--radius-xs); }
button { font: inherit; color: inherit; }
abbr[title] { text-decoration: underline dotted; text-underline-offset: 3px; cursor: help; }
[hidden] { display: none !important; }
.no-js [role="tabpanel"][hidden] { display: block !important; }
.ui-num { font-variant-numeric: tabular-nums; }

.ui-skip {
  position: absolute; left: var(--space-4); top: -100px; z-index: calc(var(--z-popup) + 1);
  background: var(--brand-navy); color: var(--brand-aqua); padding: 10px 16px; border-radius: var(--radius-full); text-decoration: none;
}
.ui-skip:focus { top: var(--space-4); }
.ui-visually-hidden { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* ---------- Las dos superficies del mundo ---------- */
.ui-container { width: 100%; max-width: var(--site-max-width); margin-left: auto; margin-right: auto; padding-left: var(--site-padding-x); padding-right: var(--site-padding-x); }
.ui-section { padding-top: var(--section-gap); padding-bottom: var(--section-gap); }

/* El panel marino: remapea los roles de color para todo lo que contiene */
.panel {
  --color-bg: var(--panel-bg);
  --color-surface: var(--panel-bg-2);
  --color-surface-2: var(--panel-bg-2);
  --color-ink: var(--panel-ink);
  --color-ink-2: var(--panel-ink-2);
  --color-ink-3: var(--panel-ink-3);
  --color-line: var(--panel-line);
  --color-line-strong: #3E4B90;
  --color-accent: var(--panel-accent);
  --color-on-accent: var(--panel-on-accent);
  --color-accent-2: var(--brand-aqua);
  --color-focus: var(--brand-aqua);
  --verb-plan: var(--panel-verb-plan);
  --verb-mide: var(--panel-verb-mide);
  --verb-com: var(--panel-verb-com);
  --verb-act: var(--panel-verb-act);
  --state-off: var(--panel-state-off);
  --station-fill: var(--panel-ink);
  background: var(--panel-bg);
  color: var(--panel-ink);
}
.panel--framed { margin-left: var(--frame); margin-right: var(--frame); border-radius: var(--radius-panel); box-shadow: var(--shadow-panel); }
.panel ::selection { background: var(--brand-aqua); color: var(--brand-navy); }
.sheet { --station-fill: #FFFFFF; background: transparent; color: var(--color-ink); } /* la lámina es el propio fondo crema: deja ver la línea de ruta */

/* ---------- Tipografía ---------- */
.ui-title { font-size: var(--font-size-2xl); margin: 0 0 var(--space-4); }
.ui-title--lg { font-size: var(--font-size-3xl); font-weight: var(--font-weight-medium); letter-spacing: var(--tracking-display); line-height: var(--line-tight); }
.ui-title--display { font-size: var(--font-size-display); font-weight: var(--font-weight-light); letter-spacing: var(--tracking-display); line-height: var(--line-tight); }
.ui-title--sm { font-size: var(--font-size-xl); }
.ui-title .linechip { vertical-align: middle; margin-right: 10px; position: relative; top: -.15em; }
.ui-title .station { vertical-align: middle; margin-right: 10px; position: relative; top: -2px; }
.ui-lede { font-size: var(--font-size-lg); color: var(--color-ink-2); max-width: 58ch; }
.ui-text { max-width: 62ch; }
.ui-muted { color: var(--color-ink-2); }
.ui-label {
  display: inline-block; font-size: var(--font-size-xs); font-weight: var(--font-weight-semibold);
  letter-spacing: var(--tracking-caps); text-transform: uppercase; font-variation-settings: "wdth" var(--wdth-wide); color: var(--color-ink-2);
}
.ui-section__head { max-width: 64ch; margin-bottom: var(--space-7); }
.ui-section__head .ui-lede { margin-top: var(--space-2); }

/* ---------- Botones (píldoras) ---------- */
.ui-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  min-height: 50px; padding: 13px 24px; border-radius: var(--radius-full); border: 1.5px solid transparent;
  font-weight: var(--font-weight-semibold); font-size: var(--font-size-sm); letter-spacing: 0; text-decoration: none; cursor: pointer; text-align: center;
  transition: background var(--motion-fast) var(--ease-out), color var(--motion-fast), border-color var(--motion-fast), transform var(--motion-fast), box-shadow var(--motion-fast);
}
.ui-btn:active { transform: translateY(1px); }
.ui-btn:disabled { opacity: .6; cursor: default; }
.ui-btn--primary { background: var(--color-accent); color: var(--color-on-accent); box-shadow: var(--shadow-sm); }
.ui-btn--primary:hover { background: color-mix(in srgb, var(--color-accent) 84%, #fff); color: var(--color-on-accent); box-shadow: var(--shadow-md); }
.panel .ui-btn--primary, .panel .ui-btn--primary:hover { box-shadow: none; } /* sobre el panel la luz viene del propio botón, sin sombra */
.ui-btn--secondary { background: transparent; color: var(--color-ink); border-color: color-mix(in srgb, var(--color-ink) 32%, transparent); }
.ui-btn--secondary:hover { border-color: var(--color-ink); color: var(--color-ink); }
.ui-btn--ghost { background: transparent; color: var(--color-ink); padding-inline: 8px; text-decoration: underline; text-underline-offset: 5px; text-decoration-color: var(--color-accent-2); }
.ui-btn--lg { min-height: 58px; padding: 15px 30px; font-size: var(--font-size-base); }
.ui-btn--block { width: 100%; }
.ui-icon {
  width: var(--icon-size-md); height: var(--icon-size-md); flex: none;
  fill: none; stroke: currentColor; stroke-width: var(--stroke-icon); stroke-linecap: round; stroke-linejoin: round;
}
.ui-btn .ui-icon { width: 18px; height: 18px; }
.ui-btn--primary .ui-icon { transition: transform var(--motion-base) var(--ease-out); }
.ui-btn--primary:hover .ui-icon { transform: translateX(3px); }

/* ---------- Chips de línea (los verbos y las líneas del ecosistema) ---------- */
.linechip {
  display: inline-flex; align-items: center; gap: 10px; padding: 7px 14px 7px 10px; border-radius: var(--radius-full);
  border: 1.5px solid color-mix(in srgb, var(--color-ink) 18%, transparent); background: transparent;
  font-size: var(--font-size-sm); font-weight: var(--font-weight-medium); letter-spacing: 0;
  color: var(--color-ink); white-space: nowrap; line-height: 1.2;
  transition: background var(--motion-fast), color var(--motion-fast), border-color var(--motion-fast), box-shadow var(--motion-fast);
}
.linechip::before {
  content: ""; width: 12px; height: 12px; border-radius: 50%; background: var(--verb, var(--color-ink)); flex: none;
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--verb, var(--color-ink)) 22%, transparent);
  transition: background var(--motion-fast), box-shadow var(--motion-fast);
}
.linechip--off { color: var(--color-ink-3); border-color: color-mix(in srgb, var(--color-ink) 10%, transparent); }
.linechip--off::before { background: var(--state-off); box-shadow: none; }
button.linechip { cursor: pointer; }
button.linechip:hover { border-color: var(--verb, var(--color-ink)); color: var(--color-ink); }
.linechip[aria-selected="true"], .linechip--on { background: var(--verb, var(--color-ink)); border-color: var(--verb, var(--color-ink)); color: var(--color-bg); }
.linechip[aria-selected="true"]::before, .linechip--on::before { background: var(--color-bg); box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-bg) 28%, transparent); }
.linechips { display: flex; flex-wrap: wrap; gap: 8px; list-style: none; margin: 0; padding: 0; }

/* ---------- Estaciones y líneas ---------- */
.station {
  display: inline-block; width: 22px; height: 22px; border-radius: 50%; flex: none;
  background: var(--station-fill, #fff); border: 5px solid var(--verb, var(--color-ink));
}
.station--off { border-color: var(--state-off); }
.station--sm { width: 16px; height: 16px; border-width: 4px; }
.stops { position: relative; list-style: none; margin: 0; padding: 0; }
.stops::before { content: ""; position: absolute; background: var(--verb, var(--state-off)); border-radius: var(--radius-xs); }

/* Teclas del panel (pestañas) y segmentos */
.ui-key {
  appearance: none; display: inline-flex; align-items: center; gap: 8px; padding: 10px 16px; border-radius: var(--radius-full);
  border: 1.5px solid color-mix(in srgb, var(--color-ink) 18%, transparent); background: transparent; cursor: pointer;
  font-size: var(--font-size-sm); font-weight: var(--font-weight-medium); color: var(--color-ink-2);
  transition: background var(--motion-fast), color var(--motion-fast), border-color var(--motion-fast);
}
.ui-key:hover { color: var(--color-ink); border-color: var(--color-ink); }
.ui-key[aria-selected="true"], .ui-key[aria-pressed="true"] { background: var(--color-accent); border-color: var(--color-accent); color: var(--color-on-accent); }
.ui-keys { display: flex; flex-wrap: wrap; gap: 8px; margin: 0 0 var(--space-4); padding: 0; }
.ui-segment { display: inline-flex; gap: 2px; padding: 4px; border-radius: var(--radius-full); border: 1.5px solid color-mix(in srgb, var(--color-ink) 14%, transparent); margin: 0 0 var(--space-4); }
.ui-segment .ui-key { border: 0; padding: 8px 16px; }

/* ---------- Marcos para material pendiente ---------- */
.ui-frame {
  position: relative; display: grid; place-items: center; aspect-ratio: var(--ratio, 4 / 3); min-height: 120px;
  padding: var(--space-4); border-radius: var(--radius-lg); border: 1.5px dashed color-mix(in srgb, var(--color-ink) 30%, transparent);
  background: color-mix(in srgb, var(--color-ink) 4%, transparent);
  color: var(--color-ink-2); font-size: var(--font-size-sm); text-align: center;
}
.ui-frame span { max-width: 28ch; }

/* ---------- Formularios ---------- */
.ui-fieldset { border: 0; padding: 0; margin: 0 0 var(--space-5); min-width: 0; }
.ui-legend { font-weight: var(--font-weight-semibold); font-size: var(--font-size-lg); padding: 0; margin: 0 0 var(--space-4); }
.ui-form-row { display: grid; gap: 0 var(--space-4); grid-template-columns: repeat(2, minmax(0, 1fr)); }
@media (max-width: 640px) { .ui-form-row { grid-template-columns: 1fr; } }
.ui-field { display: flex; flex-direction: column; gap: 6px; margin: 0 0 var(--space-4); }
.ui-field-label { font-weight: var(--font-weight-medium); font-size: var(--font-size-sm); }
.ui-field-label small { font-weight: 400; color: var(--color-ink-3); }
.ui-input, .ui-select, .ui-textarea {
  width: 100%; min-height: 50px; padding: 12px 16px; border: 1.5px solid color-mix(in srgb, var(--color-ink) 28%, transparent); border-radius: var(--radius-md);
  background: #fff; color: var(--brand-navy); font: inherit; transition: border-color var(--motion-fast), box-shadow var(--motion-fast);
}
.ui-input::placeholder, .ui-textarea::placeholder { color: var(--color-ink-3); }
.ui-input:focus, .ui-select:focus, .ui-textarea:focus { outline: none; border-color: var(--brand-purple); box-shadow: 0 0 0 4px color-mix(in srgb, var(--brand-purple) 18%, transparent); }
.ui-textarea { min-height: 128px; resize: vertical; }
.ui-select {
  appearance: none; padding-right: 44px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23101A4E' stroke-width='1.75' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 14px center; background-size: 20px;
}
.ui-help { font-size: var(--font-size-xs); color: var(--color-ink-3); }
.ui-error { font-size: var(--font-size-xs); color: var(--color-error); font-weight: 500; }
.ui-error:empty { display: none; }
.ui-field.is-invalid .ui-input, .ui-field.is-invalid .ui-select, .ui-field.is-invalid .ui-textarea { border-color: var(--color-error); }
.ui-check { display: flex; gap: 12px; align-items: flex-start; font-size: var(--font-size-sm); cursor: pointer; }
.ui-check input { width: 20px; height: 20px; margin: 2px 0 0; accent-color: var(--brand-purple); flex: none; }
.ui-checks { display: grid; gap: 10px; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }

/* Paradas seleccionables (radio): "¿en qué punto está tu Plan?" */
.ui-stops { display: grid; gap: var(--space-3); grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); margin: 0; padding: 0; border: 0; min-width: 0; position: relative; }
.ui-stop {
  position: relative; display: grid; grid-template-columns: 22px minmax(0, 1fr); gap: 14px; align-items: start;
  padding: var(--space-4) var(--space-5) var(--space-4) var(--space-4); border-radius: var(--radius-lg); cursor: pointer;
  border: 1.5px solid var(--color-line); background: #fff; color: var(--brand-navy); /* la parada es siempre una tarjeta blanca: tinta propia */
  transition: border-color var(--motion-fast), box-shadow var(--motion-fast), background var(--motion-fast), color var(--motion-fast);
}
.ui-stop:hover { border-color: var(--color-ink-3); }
.ui-stop input { position: absolute; inset: 0; width: 100%; height: 100%; margin: 0; opacity: 0; cursor: pointer; }
.ui-stop .station { margin-top: 3px; background: #fff; border-color: var(--state-off); box-shadow: none; }
.ui-stop__t { display: block; font-weight: var(--font-weight-semibold); font-size: var(--font-size-lg); margin-bottom: 2px; }
.ui-stop__d { display: block; color: var(--color-ink-2); font-size: var(--font-size-sm); }
.ui-stop:has(input:checked) { border-color: var(--brand-navy); background: var(--brand-navy); color: var(--brand-aqua); }
.ui-stop:has(input:checked) .ui-stop__d { color: #B7C0DF; }
.ui-stop:has(input:checked) .station { border-color: var(--brand-aqua); background: var(--brand-navy); }
.ui-stop:has(input:focus-visible) { outline: 3px solid var(--brand-purple); outline-offset: 3px; }
.panel .ui-stop:has(input:checked) { border-color: var(--brand-aqua); background: var(--brand-aqua); color: var(--brand-navy); } /* sobre el panel, la parada elegida se enciende en celeste */
.panel .ui-stop:has(input:checked) .ui-stop__d { color: #2E3A73; }
.panel .ui-stop:has(input:checked) .station { border-color: var(--brand-navy); background: var(--brand-aqua); }
.panel .ui-stop:has(input:focus-visible) { outline-color: var(--brand-aqua); }

/* ---------- Avisos ---------- */
.ui-notice { padding: var(--space-4) var(--space-5); border-radius: var(--radius-md); background: color-mix(in srgb, var(--color-ink) 6%, transparent); font-size: var(--font-size-sm); }
.ui-notice--success { background: var(--verb-mide-soft); color: var(--brand-green); }

/* ---------- Desplegables ---------- */
.ui-details { border-top: 1px solid var(--color-line); }
.ui-details:last-child { border-bottom: 1px solid var(--color-line); }
.ui-details summary {
  list-style: none; cursor: pointer; display: flex; justify-content: space-between; gap: var(--space-4); align-items: center;
  padding: var(--space-4) 0; font-weight: var(--font-weight-semibold); font-size: var(--font-size-lg);
}
.ui-details summary::-webkit-details-marker { display: none; }
.ui-details summary::after {
  content: ""; width: 12px; height: 12px; flex: none; margin-right: 6px;
  border-right: 2px solid var(--color-ink-2); border-bottom: 2px solid var(--color-ink-2); transform: rotate(45deg) translateY(-3px);
  transition: transform var(--motion-base) var(--ease-out);
}
.ui-details[open] summary::after { transform: rotate(-135deg) translateY(-3px); }
.ui-details__body { padding: 0 0 var(--space-5); color: var(--color-ink-2); max-width: 64ch; }

/* ---------- Revelado tipo panel: las filas entran como lecturas ---------- */
.js [data-reveal] { opacity: 0; transform: translateY(12px); transition: opacity var(--motion-slow) var(--ease-board), transform var(--motion-slow) var(--ease-board); transition-delay: calc(var(--i, 0) * 70ms); }
.js [data-reveal].is-in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .js [data-reveal] { opacity: 1; transform: none; transition: none; } }

/* ---------- La tira de marca (blanco · celeste · verde · morado · marino) ---------- */
.stripe { height: 6px; border-radius: var(--radius-xs); background: linear-gradient(90deg, #fff 0 20%, var(--brand-aqua) 20% 40%, var(--brand-green) 40% 60%, var(--brand-purple) 60% 80%, var(--brand-navy) 80% 100%); }