/* FavorChain — sistema visual base
   Un organismo de luz: fondo casi negro, acentos cálidos en el origen
   que se enfrían hacia violeta/turquesa a medida que la cadena se expande. */

:root {
  --bg-0: #05060a;
  --bg-1: #0a0c16;
  --bg-2: #10091d;
  --ink-0: #f5f2ec;
  --ink-1: #c9c5d6;
  --ink-2: #8b87a0;
  --ink-3: #5c5972;

  --gold: #ffc978;
  --amber: #ff9d5c;
  --coral: #ff7a92;
  --rose: #e373c9;
  --violet: #a875ff;
  --indigo: #7b7bff;
  --teal: #4fe3c8;

  --line: rgba(198, 190, 220, 0.14);
  --line-soft: rgba(198, 190, 220, 0.07);

  --radius-sm: 10px;
  --radius-md: 18px;
  --radius-lg: 28px;

  --shadow-glow: 0 0 60px rgba(168, 117, 255, 0.15);
  --ease: cubic-bezier(0.16, 1, 0.3, 1);

  --font-display: "Fraunces", "Iowan Old Style", "Georgia", serif;
  --font-ui: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
/* red de seguridad: ningún elemento (botón sin wrap, input con mínimo por
   defecto, etc.) debe poder empujar la página entera fuera del viewport y
   descuadrar el centrado — si algo se pasa, que se recorte, no que desplace */
html { overflow-x: hidden; }

/* el atributo hidden debe ganar siempre, incluso sobre reglas display:flex
   con la misma especificidad declaradas más tarde en la cascada */
[hidden] { display: none !important; }

body {
  margin: 0;
  font-family: var(--font-ui);
  color: var(--ink-0);
  background:
    radial-gradient(ellipse 90% 60% at 50% -10%, rgba(168, 117, 255, 0.16), transparent 60%),
    radial-gradient(ellipse 70% 50% at 85% 100%, rgba(79, 227, 200, 0.08), transparent 60%),
    linear-gradient(180deg, var(--bg-1), var(--bg-0) 40%, var(--bg-2));
  min-height: 100%;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 480;
  letter-spacing: -0.01em;
  line-height: 1.08;
  margin: 0;
  text-wrap: balance;
}

p { margin: 0; line-height: 1.6; text-wrap: pretty; }
a { color: inherit; }

.container {
  width: min(1120px, 92vw);
  margin-inline: auto;
}

/* ---------- nav ---------- */

.nav {
  position: sticky;
  top: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 0;
  backdrop-filter: blur(14px);
  background: linear-gradient(180deg, rgba(5, 6, 10, 0.75), rgba(5, 6, 10, 0));
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-size: 1.15rem;
  letter-spacing: 0.01em;
  text-decoration: none;
  color: var(--ink-0);
}

.brand-mark {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: url("/assets/logo-mark.png") center / contain no-repeat;
}

.nav-links { display: flex; gap: 28px; align-items: center; }

.nav-link {
  font-size: 0.92rem;
  color: var(--ink-1);
  text-decoration: none;
  transition: color 0.2s var(--ease);
}
.nav-link:hover { color: var(--ink-0); }

/* ---------- buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: none;
  border-radius: 999px;
  padding: 14px 26px;
  font-family: var(--font-ui);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease), opacity 0.2s;
  white-space: nowrap;
}
.btn:active { transform: scale(0.97); }

.btn-primary {
  color: #1a0f08;
  background: linear-gradient(135deg, var(--gold), var(--coral));
  box-shadow: 0 8px 30px rgba(255, 157, 92, 0.35);
}
.btn-primary:hover { box-shadow: 0 10px 40px rgba(255, 157, 92, 0.5); transform: translateY(-1px); }

.btn-ghost {
  color: var(--ink-0);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--line);
}
.btn-ghost:hover { background: rgba(255, 255, 255, 0.08); border-color: rgba(198, 190, 220, 0.28); }

.btn:disabled { opacity: 0.4; cursor: not-allowed; transform: none !important; }
.btn-confirm-danger { border-color: rgba(255,122,146,0.5) !important; color: #ffc7d1 !important; }

/* ---------- cards / forms ---------- */

.card {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.035), rgba(255, 255, 255, 0.015));
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 32px;
}

.field { display: flex; flex-direction: column; gap: 8px; margin-bottom: 20px; }
.field label { font-size: 0.85rem; color: var(--ink-2); font-weight: 600; letter-spacing: 0.01em; }

.field input,
.field textarea,
.field select {
  font-family: var(--font-ui);
  font-size: 1rem;
  color: var(--ink-0);
  background: rgba(0, 0, 0, 0.25);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 13px 16px;
  outline: none;
  transition: border-color 0.2s var(--ease), background 0.2s var(--ease);
  resize: vertical;
}
.field input:focus,
.field textarea:focus,
.field select:focus {
  border-color: rgba(168, 117, 255, 0.6);
  background: rgba(168, 117, 255, 0.06);
}
.field textarea { min-height: 110px; line-height: 1.5; }
.field .hint { font-size: 0.78rem; color: var(--ink-3); }

.kind-grid,
.choice-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
  gap: 10px;
}
.choice-grid.choice-grid-3 { grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); }

.kind-option,
.choice-option {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.02);
  cursor: pointer;
  font-size: 0.85rem;
  transition: border-color 0.2s, background 0.2s;
}
.choice-option { flex-direction: column; align-items: flex-start; gap: 3px; }
.choice-option .co-hint { font-size: 0.74rem; color: var(--ink-3); font-weight: 400; }

/* El input real permanece en el DOM y en el orden de tabulación (accesible
   por teclado y lectores de pantalla); solo se oculta visualmente. */
.kind-option input,
.choice-option input {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}
.kind-option.selected,
.choice-option.selected {
  border-color: rgba(255, 201, 120, 0.6);
  background: rgba(255, 201, 120, 0.08);
}
.kind-option:focus-within,
.choice-option:focus-within {
  outline: 2px solid var(--gold);
  outline-offset: 2px;
}

/* ---------- misc ---------- */

.eyebrow {
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-2);
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 999px;
  border: 1px solid var(--line);
  font-size: 0.78rem;
  color: var(--ink-1);
  background: rgba(255, 255, 255, 0.03);
}

.skeleton {
  background: linear-gradient(90deg, rgba(255,255,255,0.03), rgba(255,255,255,0.08), rgba(255,255,255,0.03));
  background-size: 200% 100%;
  animation: shimmer 1.6s infinite;
  border-radius: var(--radius-sm);
}
@keyframes shimmer { to { background-position: -200% 0; } }

.fade-in { animation: fadeIn 0.7s var(--ease) both; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }

.error-banner {
  border: 1px solid rgba(255, 122, 146, 0.4);
  background: rgba(255, 122, 146, 0.08);
  color: #ffc7d1;
  padding: 14px 18px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
}

.footer {
  padding: 60px 0 40px;
  color: var(--ink-3);
  font-size: 0.85rem;
  text-align: center;
}

@media (max-width: 900px) {
  .nav-links .nav-link:not(.nav-cta) { display: none; }
}
@media (max-width: 720px) {
  .card { padding: 22px; }
}

/* ---------- foco visible / accesibilidad ---------- */

a, button, input, textarea, select, [tabindex] {
  outline-offset: 2px;
}
:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 3px;
  border-radius: 4px;
}
.btn:focus-visible { outline-offset: 4px; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

/* el nav es sticky: cualquier sección a la que hagamos scroll necesita
   margen para no quedar tapada bajo él */
section, .card { scroll-margin-top: 96px; }

/* ---------- controles del árbol (zoom / centrar / alternar lista) ---------- */

.viz-shell { position: relative; }
.viz-controls {
  position: absolute;
  right: 14px;
  bottom: 14px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  z-index: 5;
}
.viz-controls button {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: rgba(8, 8, 16, 0.72);
  backdrop-filter: blur(6px);
  color: var(--ink-0);
  font-size: 1rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s, border-color 0.2s;
}
.viz-controls button:hover { background: rgba(255, 255, 255, 0.08); border-color: rgba(198,190,220,0.3); }

.viz-toggle-list {
  position: absolute;
  left: 14px;
  bottom: 14px;
  z-index: 5;
  font-size: 0.78rem;
  padding: 8px 14px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(8, 8, 16, 0.72);
  backdrop-filter: blur(6px);
  color: var(--ink-1);
  cursor: pointer;
}
.viz-toggle-list:hover { color: var(--ink-0); }

/* ---------- panel de detalle de nodo ---------- */

.node-panel-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(3, 3, 8, 0.6);
  backdrop-filter: blur(3px);
  display: flex;
  align-items: flex-end;
  justify-content: center;
  z-index: 100;
  padding: 0;
}
@media (min-width: 640px) {
  .node-panel-backdrop { align-items: center; padding: 20px; }
}
.node-panel {
  width: 100%;
  max-width: 480px;
  max-height: 82vh;
  overflow-y: auto;
  background: linear-gradient(180deg, #14101f, var(--bg-0) 60%);
  border: 1px solid var(--line);
  border-radius: 26px 26px 0 0;
  padding: 26px 26px 30px;
  position: relative;
}
@media (min-width: 640px) {
  .node-panel { border-radius: 26px; }
}
.node-panel-close {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.04);
  color: var(--ink-1);
  cursor: pointer;
  font-size: 1rem;
}
.node-panel h3 { font-size: 1.25rem; margin: 6px 30px 10px 0; }
.node-panel .np-message { color: var(--ink-1); line-height: 1.6; margin-bottom: 16px; white-space: pre-wrap; }
.node-panel .np-reflection {
  border-left: 2px solid rgba(255,201,120,0.5);
  padding-left: 14px;
  font-size: 0.9rem;
  color: var(--ink-1);
  font-style: italic;
  margin-bottom: 16px;
}
.node-panel .np-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 18px;
}
.node-panel .np-actions { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }

/* ---------- badges de estado ---------- */

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 0.72rem;
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid var(--line);
  color: var(--ink-1);
}
.status-badge::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
.status-badge-pending { color: var(--gold); border-color: rgba(255,201,120,0.4); }
.status-badge-received { color: var(--teal); border-color: rgba(79,227,200,0.35); }
.status-badge-continued { color: var(--violet); border-color: rgba(168,117,255,0.4); }
.status-badge-stopped { color: var(--ink-3); border-color: var(--line); }

/* ---------- lista accesible de la cadena (alternativa al canvas) ---------- */

.chain-list-root, .chain-list-children {
  list-style: none;
  margin: 0;
  padding: 0;
}
.chain-list-children {
  margin-left: 18px;
  padding-left: 16px;
  border-left: 1px dashed var(--line);
  margin-top: 8px;
}
.chain-list-item { margin-bottom: 8px; }
.chain-list-node {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 4px;
  width: 100%;
  text-align: left;
  background: rgba(255,255,255,0.02);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  cursor: pointer;
  color: var(--ink-0);
  font-family: var(--font-ui);
}
.chain-list-node:hover { background: rgba(255,255,255,0.05); }
.chain-list-node.is-current { border-color: rgba(255,201,120,0.55); background: rgba(255,201,120,0.07); }
.chain-list-node .cl-title { font-weight: 600; font-size: 0.92rem; }
.chain-list-node .cl-sub { font-size: 0.78rem; color: var(--ink-2); }
.cl-badge {
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--ink-3);
}
.cl-empty { color: var(--ink-2); font-size: 0.9rem; }

/* ---------- reportar contenido (moderación) ---------- */

.flag-btn {
  background: none;
  border: none;
  color: var(--ink-3);
  font-size: 0.76rem;
  font-family: var(--font-ui);
  cursor: pointer;
  text-decoration: underline;
  padding: 0;
}
.flag-btn:hover { color: var(--ink-1); }
.flag-btn:disabled { cursor: default; text-decoration: none; opacity: 0.7; }

/* ---------- vista previa de nodo único + tarjeta física (crear / continuar) ---------- */

.seed-visual {
  position: relative;
  padding: 0;
  overflow: hidden;
  aspect-ratio: 16/8;
  margin-bottom: 34px;
}
.seed-visual canvas { width: 100%; height: 100%; display: block; }
.seed-visual-caption {
  position: absolute;
  left: 50%;
  bottom: 16px;
  transform: translateX(-50%);
  font-size: 0.8rem;
  color: var(--ink-2);
  background: rgba(5,6,10,0.55);
  padding: 6px 14px;
  border-radius: 999px;
  border: 1px solid var(--line-soft);
  white-space: nowrap;
}

.card-preview { display: flex; flex-direction: column; align-items: center; gap: 18px; }

.physical-card {
  width: min(420px, 100%);
  border-radius: 24px;
  padding: 26px 26px 22px;
  background:
    radial-gradient(circle at 15% 0%, rgba(255,201,120,0.22), transparent 55%),
    linear-gradient(165deg, #14101f, #0a0c16 70%);
  border: 1px solid rgba(255,201,120,0.25);
  box-shadow: 0 24px 60px rgba(0,0,0,0.45), 0 0 0 1px rgba(255,255,255,0.02) inset;
  position: relative;
  overflow: hidden;
}
.pc-mark {
  width: 20px; height: 20px; border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, #fff3dc, var(--gold) 40%, var(--rose) 85%);
  box-shadow: 0 0 16px rgba(255,201,120,0.6);
  margin-bottom: 16px;
}
.pc-eyebrow { font-size: 0.68rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-3); margin-bottom: 8px;}
.pc-body h3 { font-family: var(--font-display); font-size: 1.35rem; margin-bottom: 10px; }
.pc-body p { color: var(--ink-1); font-size: 0.9rem; line-height: 1.55; max-height: 6.5em; overflow: hidden; }
.pc-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px dashed rgba(255,255,255,0.14);
}
.pc-qr { width: 68px; height: 68px; border-radius: 10px; overflow: hidden; }
.pc-code-block { text-align: right; }
.pc-code-label { display:block; font-size: 0.65rem; color: var(--ink-3); text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: 4px;}
.pc-code { font-family: var(--font-display); font-size: 1.3rem; letter-spacing: 0.02em; color: var(--gold); }

.card-actions { display: flex; gap: 10px; flex-wrap: wrap; justify-content: center; }
.share-hint { color: var(--ink-3); font-size: 0.82rem; text-align: center; max-width: 40ch; }
.save-note { color: var(--ink-3); font-size: 0.78rem; text-align: center; max-width: 40ch; }
.save-note a { color: var(--gold); text-decoration: underline; }

@media print {
  body * { visibility: hidden; }
  .physical-card, .physical-card * { visibility: visible; }
  .physical-card { position: fixed; top: 40px; left: 50%; transform: translateX(-50%); }
}