/* ==========================================================================
   FABLE MOOD — design system de SITA ("el mood de Fable 5")
   --------------------------------------------------------------------------
   Skin CSS que se monta ENCIMA de Tailwind + styles.css sin tocar el HTML.
   Cargar en TODAS las páginas, DESPUÉS de styles.css:

     <link rel="stylesheet" href="/fable-mood.css">

   Principios: instrumento de precisión — sobrio, premium, cero neón-juguete.
   - Selectores aditivos: nunca exigen cambiar markup.
   - CSS puro, sin fuentes externas ni CDNs (CSP-safe).
   - Dark = identidad. Light = opcional decente (prefers-color-scheme).
   - Contraste AA en todo texto. prefers-reduced-motion respetado.

   ÍNDICE
     1. Tokens (:root)                6. Header / footer con glass
     2. Base + fondo en capas         7. Burbujas de chat
     3. Tipografía                    8. Hooks existentes (.sita-*, hub)
     4. Focus + selección + scroll    9. Componentes .fable-*
     5. Formularios y botones        10. Motion + reduced-motion
                                     11. Modo claro
   ========================================================================== */

/* ==========================================================================
   1. TOKENS
   ========================================================================== */
:root {
  /* --- Fondos en capas (de abismo a superficie) --- */
  --fable-bg-0: #0a0a0a;        /* abismo — canvas base (compat con la app) */
  --fable-bg-1: #101014;        /* capa 1 — paneles laterales, rails        */
  --fable-bg-2: #16161a;        /* capa 2 — cards, superficies en reposo    */
  --fable-surface: #1b1b21;     /* superficie interactiva (inputs, chips)   */
  --fable-raised: #202028;      /* elevada (menús, popovers, hover)         */
  --fable-overlay: rgba(8, 9, 12, 0.72);   /* backdrop de modales           */

  /* --- Hairlines y bordes (precisión de bisel, no cajas) --- */
  --fable-line: rgba(255, 255, 255, 0.07);        /* hairline en reposo     */
  --fable-line-strong: rgba(255, 255, 255, 0.13); /* hover / activo         */
  --fable-line-accent: rgba(91, 130, 255, 0.38);  /* borde acentuado        */

  /* --- Tinta (jerarquía de texto, todas AA sobre bg-0/bg-2) --- */
  --fable-ink: #f4f4f4;         /* primario                                  */
  --fable-ink-2: #c3cad8;       /* secundario (labels, subtítulos)  ~10.9:1  */
  --fable-ink-3: #98a1b3;       /* muted (metadata, timestamps)      ~6.6:1  */
  --fable-ink-4: #6b7385;       /* faint (solo decorativo/disabled)          */

  /* --- Acentos: azul instrumento + eco cian + latón sobrio --- */
  --fable-accent: #5b82ff;         /* primario (compat #5b82ff hardcodeado)  */
  --fable-accent-text: #93acff;    /* azul para TEXTO pequeño (AA ~7.2:1)    */
  --fable-accent-deep: #3d5fd6;    /* pressed / gradiente inferior           */
  --fable-accent-soft: rgba(91, 130, 255, 0.14); /* fondos tintados          */
  --fable-cyan: #22d3ee;           /* eco frío — ya vive en la app (emerald) */
  --fable-cyan-text: #67e8f9;      /* cian para texto pequeño                */
  --fable-brass: #c9b28a;          /* latón de dial de reloj — detalle raro  */

  /* --- Estados --- */
  --fable-ok: #3ecf8e;          --fable-ok-soft: rgba(62, 207, 142, 0.12);
  --fable-warn: #e5b567;        --fable-warn-soft: rgba(229, 181, 103, 0.12);
  --fable-err: #ef6a6a;         --fable-err-soft: rgba(239, 106, 106, 0.12);

  /* --- Radios (geometría contenida, no globos) --- */
  --fable-r-sm: 8px;
  --fable-r-md: 12px;
  --fable-r-lg: 16px;
  --fable-r-xl: 22px;
  --fable-r-pill: 999px;

  /* --- Sombras: profundidad real + bisel interior de instrumento --- */
  --fable-shadow-1: 0 1px 2px rgba(0, 0, 0, 0.35);
  --fable-shadow-2: 0 4px 16px rgba(0, 0, 0, 0.35), 0 1px 3px rgba(0, 0, 0, 0.3);
  --fable-shadow-3: 0 16px 48px rgba(0, 0, 0, 0.5), 0 4px 12px rgba(0, 0, 0, 0.35);
  --fable-bevel: inset 0 1px 0 rgba(255, 255, 255, 0.05); /* filo superior   */

  /* --- Glow del orb (presencia de SITA: azul con halo cian) --- */
  --fable-glow:
    0 0 22px rgba(91, 130, 255, 0.35),
    0 0 64px rgba(34, 211, 238, 0.16);
  --fable-glow-strong:
    0 0 30px rgba(91, 130, 255, 0.5),
    0 0 90px rgba(34, 211, 238, 0.25);

  /* --- Glass --- */
  --fable-glass-bg: rgba(16, 16, 20, 0.66);
  --fable-glass-blur: saturate(1.35) blur(14px);

  /* --- Tipografía --- */
  --fable-font:
    -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI",
    Roboto, "Helvetica Neue", system-ui, sans-serif;
  --fable-font-mono:
    ui-monospace, "SF Mono", "SFMono-Regular", Menlo, Consolas,
    "Liberation Mono", monospace;
  --fable-track-tight: -0.02em;   /* titulares                               */
  --fable-track-wide: 0.14em;     /* eyebrows / etiquetas uppercase          */

  /* --- Motion --- */
  --fable-ease: cubic-bezier(0.22, 1, 0.36, 1);   /* salida suave, precisa   */
  --fable-dur-1: 140ms;
  --fable-dur-2: 260ms;

  accent-color: var(--fable-accent);
  color-scheme: dark;
}

/* ==========================================================================
   2. BASE + FONDO EN CAPAS
   Lavado radial fijo sobre el fondo (aditivo: vive en body::before, detrás
   del contenido, encima del bg; no pelea con las utilidades de Tailwind).
   ========================================================================== */
body {
  font-family: var(--fable-font);
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(90rem 48rem at 78% -12%, rgba(91, 130, 255, 0.055), transparent 60%),
    radial-gradient(70rem 42rem at -10% 108%, rgba(34, 211, 238, 0.035), transparent 55%);
}

/* Imágenes y media nunca desbordan */
img, video, canvas, svg { max-width: 100%; }

/* ==========================================================================
   3. TIPOGRAFÍA
   ========================================================================== */
h1, h2, h3, .fable-title {
  letter-spacing: var(--fable-track-tight);
  font-weight: 600;
  text-wrap: balance;
}
h4, h5, h6 { letter-spacing: -0.01em; }

/* Cifras siempre alineadas: relojería */
time, [data-time], .tabular-nums, .fable-num {
  font-variant-numeric: tabular-nums;
}

code, pre, kbd, samp { font-family: var(--fable-font-mono); }

::selection {
  background: rgba(91, 130, 255, 0.32);
  color: var(--fable-ink);
}

/* ==========================================================================
   4. FOCUS + SCROLLBARS
   ========================================================================== */
:focus { outline: none; }
:focus-visible {
  outline: 2px solid var(--fable-accent);
  outline-offset: 2px;
  border-radius: 4px;
}
/* Campos de texto: anillo pegado al borde, no offset flotante */
input:focus-visible, textarea:focus-visible, select:focus-visible {
  outline-offset: 0;
  box-shadow: 0 0 0 3px var(--fable-accent-soft);
}

/* Scrollbars finos, de instrumento */
* {
  scrollbar-width: thin;
  scrollbar-color: rgba(255, 255, 255, 0.14) transparent;
}
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.12);
  border-radius: 8px;
  border: 2px solid transparent;
  background-clip: padding-box;
}
::-webkit-scrollbar-thumb:hover { background-color: rgba(255, 255, 255, 0.22); }
::-webkit-scrollbar-corner { background: transparent; }

/* ==========================================================================
   5. FORMULARIOS Y BOTONES (aditivo sobre Tailwind)
   ========================================================================== */
input, textarea, select {
  caret-color: var(--fable-accent);
  transition: box-shadow var(--fable-dur-1) var(--fable-ease),
              border-color var(--fable-dur-1) var(--fable-ease);
}
::placeholder { color: var(--fable-ink-4); opacity: 1; }

button, [role="button"] {
  transition:
    background-color var(--fable-dur-1) var(--fable-ease),
    border-color var(--fable-dur-1) var(--fable-ease),
    color var(--fable-dur-1) var(--fable-ease),
    box-shadow var(--fable-dur-1) var(--fable-ease),
    transform var(--fable-dur-1) var(--fable-ease),
    opacity var(--fable-dur-1) var(--fable-ease);
}
button:active:not(:disabled), [role="button"]:active { transform: scale(0.975); }
button:disabled { cursor: not-allowed; }

hr { border-color: var(--fable-line); }

/* ==========================================================================
   6. HEADER / FOOTER — vidrio de precisión
   Suma blur+saturación y un hairline por sombra; no toca layout ni colores
   que las utilidades ya fijan.
   ========================================================================== */
header {
  -webkit-backdrop-filter: var(--fable-glass-blur);
  backdrop-filter: var(--fable-glass-blur);
  box-shadow: 0 1px 0 var(--fable-line);
}
footer {
  -webkit-backdrop-filter: var(--fable-glass-blur);
  backdrop-filter: var(--fable-glass-blur);
  box-shadow: 0 -1px 0 var(--fable-line);
}

/* ==========================================================================
   7. BURBUJAS DE CHAT (index.html — hooks reales del markup)
   ========================================================================== */
/* Usuario: .justify-end > burbuja rounded-2xl — bisel superior + hairline */
main .justify-end > .rounded-2xl {
  box-shadow: var(--fable-bevel), var(--fable-shadow-1);
}
/* Asistente: respiración tipográfica y enlaces con el azul de texto AA */
.sita-asst-bubble { line-height: 1.65; }
.sita-asst-bubble a { color: var(--fable-accent-text); text-underline-offset: 3px; }
.sita-asst-bubble code {
  background: var(--fable-surface);
  border: 1px solid var(--fable-line);
  border-radius: 6px;
  padding: 0.1em 0.4em;
  font-size: 0.9em;
}
.sita-asst-bubble pre {
  background: var(--fable-bg-1);
  border: 1px solid var(--fable-line);
  border-radius: var(--fable-r-md);
  box-shadow: var(--fable-bevel);
  overflow-x: auto;
}

/* ==========================================================================
   8. HOOKS EXISTENTES — pulir sin romper
   ========================================================================== */
/* Rail de herramientas (index): hover con hairline, no relleno plano */
.sita-toolrail-btn:hover {
  box-shadow: inset 0 0 0 1px var(--fable-line);
}
/* Cards de sugerencias: filo superior de instrumento */
.sita-suggestion { box-shadow: var(--fable-bevel); }

/* Hub (clases semánticas propias: .card .btn .pill) */
.card {
  transition: transform var(--fable-dur-2) var(--fable-ease),
              box-shadow var(--fable-dur-2) var(--fable-ease),
              border-color var(--fable-dur-2) var(--fable-ease);
}
.card:hover {
  transform: translateY(-2px);
  box-shadow: var(--fable-shadow-2), var(--fable-bevel);
  border-color: var(--fable-line-strong);
}
.pill { letter-spacing: 0.02em; }

/* Orb: glow tokenizado disponible para sita-orb.js / contenedores */
.sita-orb-glow, .fable-orb { box-shadow: var(--fable-glow); }

/* ==========================================================================
   9. COMPONENTES .fable-*  (opt-in, para markup nuevo)
   ========================================================================== */
/* --- Superficies --- */
.fable-card {
  background: linear-gradient(180deg, var(--fable-bg-2), var(--fable-bg-1));
  border: 1px solid var(--fable-line);
  border-radius: var(--fable-r-lg);
  box-shadow: var(--fable-bevel), var(--fable-shadow-1);
}
.fable-card--hover {
  transition: transform var(--fable-dur-2) var(--fable-ease),
              box-shadow var(--fable-dur-2) var(--fable-ease),
              border-color var(--fable-dur-2) var(--fable-ease);
}
.fable-card--hover:hover {
  transform: translateY(-2px);
  border-color: var(--fable-line-strong);
  box-shadow: var(--fable-bevel), var(--fable-shadow-2);
}
.fable-glass {
  background: var(--fable-glass-bg);
  -webkit-backdrop-filter: var(--fable-glass-blur);
  backdrop-filter: var(--fable-glass-blur);
  border: 1px solid var(--fable-line);
  border-radius: var(--fable-r-lg);
}
.fable-raised {
  background: var(--fable-raised);
  border: 1px solid var(--fable-line-strong);
  border-radius: var(--fable-r-md);
  box-shadow: var(--fable-shadow-3);
}

/* --- Botones --- */
.fable-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.55rem 1.1rem;
  border-radius: var(--fable-r-md);
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  background: var(--fable-surface);
  color: var(--fable-ink);
  border: 1px solid var(--fable-line-strong);
  box-shadow: var(--fable-bevel);
  cursor: pointer;
  user-select: none;
}
.fable-btn:hover { background: var(--fable-raised); border-color: rgba(255, 255, 255, 0.2); }
.fable-btn:disabled { opacity: 0.45; }

.fable-btn--primary {
  background: linear-gradient(180deg, var(--fable-accent), var(--fable-accent-deep));
  border-color: rgba(91, 130, 255, 0.55);
  color: #f6f8ff;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.18), 0 2px 10px rgba(91, 130, 255, 0.25);
}
.fable-btn--primary:hover {
  background: linear-gradient(180deg, #6c8fff, var(--fable-accent-deep));
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.18), 0 2px 16px rgba(91, 130, 255, 0.4);
}
.fable-btn--ghost {
  background: transparent;
  border-color: transparent;
  box-shadow: none;
  color: var(--fable-ink-2);
}
.fable-btn--ghost:hover {
  background: var(--fable-surface);
  color: var(--fable-ink);
  border-color: var(--fable-line);
}
.fable-btn--danger {
  background: var(--fable-err-soft);
  border-color: rgba(239, 106, 106, 0.35);
  color: #f8a9a9;
}
.fable-btn--danger:hover { background: rgba(239, 106, 106, 0.2); }

/* --- Inputs --- */
.fable-input {
  width: 100%;
  padding: 0.6rem 0.9rem;
  background: var(--fable-bg-1);
  color: var(--fable-ink);
  border: 1px solid var(--fable-line-strong);
  border-radius: var(--fable-r-md);
  box-shadow: var(--fable-bevel);
  font-size: 0.9375rem;
}
.fable-input:focus {
  border-color: var(--fable-line-accent);
  box-shadow: var(--fable-bevel), 0 0 0 3px var(--fable-accent-soft);
}

/* --- Etiquetas y texto --- */
.fable-eyebrow {
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: var(--fable-track-wide);
  color: var(--fable-ink-3);
}
.fable-title { font-size: 1.125rem; color: var(--fable-ink); }
.fable-muted { color: var(--fable-ink-3); }
.fable-faint { color: var(--fable-ink-4); }
.fable-accent-text { color: var(--fable-accent-text); }
.fable-brass-text { color: var(--fable-brass); }

/* --- Chips y estado --- */
.fable-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.2rem 0.65rem;
  border-radius: var(--fable-r-pill);
  font-size: 0.75rem;
  font-weight: 500;
  background: var(--fable-surface);
  border: 1px solid var(--fable-line);
  color: var(--fable-ink-2);
}
.fable-chip--accent { background: var(--fable-accent-soft); border-color: var(--fable-line-accent); color: var(--fable-accent-text); }
.fable-chip--ok    { background: var(--fable-ok-soft);   border-color: rgba(62, 207, 142, 0.3);  color: #7fe3b6; }
.fable-chip--warn  { background: var(--fable-warn-soft); border-color: rgba(229, 181, 103, 0.3); color: #eccb8f; }
.fable-chip--err   { background: var(--fable-err-soft);  border-color: rgba(239, 106, 106, 0.3); color: #f5a1a1; }

.fable-dot {
  display: inline-block;
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--fable-ink-4);
  vertical-align: middle;
}
.fable-dot--ok   { background: var(--fable-ok);   box-shadow: 0 0 8px rgba(62, 207, 142, 0.6); }
.fable-dot--warn { background: var(--fable-warn); box-shadow: 0 0 8px rgba(229, 181, 103, 0.6); }
.fable-dot--err  { background: var(--fable-err);  box-shadow: 0 0 8px rgba(239, 106, 106, 0.6); }
.fable-dot--live { background: var(--fable-cyan); box-shadow: 0 0 8px rgba(34, 211, 238, 0.7); animation: fable-pulse 2.4s ease-in-out infinite; }

/* --- Burbujas de chat (para páginas nuevas) --- */
.fable-bubble-user {
  background: linear-gradient(160deg, #232b3f, #1a2030);
  border: 1px solid rgba(91, 130, 255, 0.22);
  border-radius: var(--fable-r-xl);
  border-top-right-radius: var(--fable-r-sm);
  padding: 0.75rem 1rem;
  max-width: 42rem;
  box-shadow: var(--fable-bevel), var(--fable-shadow-1);
}
.fable-bubble-sita {
  color: var(--fable-ink);
  line-height: 1.65;
  max-width: 46rem;
}

/* --- Misceláneos --- */
.fable-divider {
  border: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--fable-line-strong), transparent);
}
.fable-kbd {
  display: inline-block;
  padding: 0.1rem 0.45rem;
  border-radius: 6px;
  background: var(--fable-surface);
  border: 1px solid var(--fable-line-strong);
  border-bottom-width: 2px;
  font-family: var(--fable-font-mono);
  font-size: 0.75rem;
  color: var(--fable-ink-2);
}
.fable-skeleton {
  position: relative;
  overflow: hidden;
  background: var(--fable-surface);
  border-radius: var(--fable-r-sm);
  color: transparent;
}
.fable-skeleton::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.05), transparent);
  animation: fable-shimmer 1.8s var(--fable-ease) infinite;
}
.fable-glow { box-shadow: var(--fable-glow); }
.fable-glow--strong { box-shadow: var(--fable-glow-strong); }

/* Entrada suave para contenido nuevo */
.fable-rise { animation: fable-rise var(--fable-dur-2) var(--fable-ease) both; }

/* ==========================================================================
   10. MOTION
   ========================================================================== */
@keyframes fable-rise {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fable-shimmer {
  from { transform: translateX(-100%); }
  to   { transform: translateX(100%); }
}
@keyframes fable-pulse {
  0%, 100% { opacity: 1; }
  50%      { opacity: 0.45; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .card:hover, .fable-card--hover:hover { transform: none; }
  button:active:not(:disabled), [role="button"]:active { transform: none; }
}

/* ==========================================================================
   11. MODO CLARO — opcional decente (dark sigue siendo la identidad)
   Remapea tokens + las utilidades ink más comunes del markup existente.
   ========================================================================== */
@media (prefers-color-scheme: light) {
  :root {
    --fable-bg-0: #f5f6f8;
    --fable-bg-1: #eef0f4;
    --fable-bg-2: #ffffff;
    --fable-surface: #ffffff;
    --fable-raised: #ffffff;
    --fable-overlay: rgba(20, 24, 32, 0.4);

    --fable-line: rgba(15, 20, 30, 0.1);
    --fable-line-strong: rgba(15, 20, 30, 0.18);

    --fable-ink: #171a21;
    --fable-ink-2: #3d4454;      /* ~9.4:1 sobre blanco */
    --fable-ink-3: #5a6373;      /* ~5.9:1 */
    --fable-ink-4: #8a92a3;

    --fable-accent-text: #3a5fd9;  /* AA sobre claro */
    --fable-cyan-text: #0e7490;
    --fable-brass: #8a6d3b;
    --fable-ok: #157f52;
    --fable-warn: #925f13;
    --fable-err: #c23d3d;

    --fable-shadow-1: 0 1px 2px rgba(20, 24, 32, 0.08);
    --fable-shadow-2: 0 4px 16px rgba(20, 24, 32, 0.1), 0 1px 3px rgba(20, 24, 32, 0.08);
    --fable-shadow-3: 0 16px 48px rgba(20, 24, 32, 0.16), 0 4px 12px rgba(20, 24, 32, 0.1);
    --fable-bevel: inset 0 1px 0 rgba(255, 255, 255, 0.85);

    --fable-glass-bg: rgba(248, 249, 251, 0.72);

    color-scheme: light;
  }

  /* Anula el "siempre-dark" heredado de styles.css */
  body {
    background-color: var(--fable-bg-0) !important;
    color: var(--fable-ink) !important;
  }
  body::before {
    background:
      radial-gradient(90rem 48rem at 78% -12%, rgba(91, 130, 255, 0.06), transparent 60%),
      radial-gradient(70rem 42rem at -10% 108%, rgba(34, 211, 238, 0.04), transparent 55%);
  }

  /* Remap acotado de las utilidades `ink` de Tailwind más usadas
     (fondo, texto, borde) — suficiente para un claro decente. */
  .bg-ink-950, .from-ink-950 { background-color: var(--fable-bg-0) !important; background-image: none !important; }
  .bg-ink-900, .from-ink-900, .via-ink-900 { background-color: var(--fable-bg-1) !important; background-image: none !important; }
  .bg-ink-850, .bg-ink-800 { background-color: var(--fable-bg-2) !important; }
  .bg-ink-700 { background-color: #e4e7ed !important; }
  .bg-ink-950\/60, .bg-ink-950\/80, .bg-ink-900\/60, .bg-ink-900\/80 {
    background-color: var(--fable-glass-bg) !important;
  }
  .text-ink-100, .text-ink-200 { color: var(--fable-ink) !important; }
  .text-ink-300 { color: var(--fable-ink-2) !important; }
  .text-ink-400, .text-ink-500 { color: var(--fable-ink-3) !important; }
  .text-ink-600 { color: var(--fable-ink-4) !important; }
  .border-ink-800, .border-ink-700,
  .border-ink-800\/60, .border-ink-800\/80 { border-color: var(--fable-line) !important; }

  .hover\:bg-ink-800:hover { background-color: #e9ecf1 !important; }

  /* Burbuja de usuario del chat en claro */
  main .justify-end > .rounded-2xl {
    background: #e8edf9 !important;
    background-image: none !important;
    color: var(--fable-ink) !important;
    border-color: rgba(91, 130, 255, 0.25) !important;
  }
  .sita-asst-bubble pre, .sita-asst-bubble code { background: var(--fable-bg-1); }

  ::selection { background: rgba(91, 130, 255, 0.25); color: var(--fable-ink); }
  * { scrollbar-color: rgba(20, 24, 32, 0.25) transparent; }
  ::-webkit-scrollbar-thumb { background: rgba(20, 24, 32, 0.2); }
  ::-webkit-scrollbar-thumb:hover { background-color: rgba(20, 24, 32, 0.35); }
}