/* ═══════════════════════════════════════════════════════════════
   FractAIll · Design System Global v1
   Light theme — fuente única de verdad de coherencia visual.
   No reemplaza CSS inline, lo complementa como base.
   2026-04-28
   ─────────────────────────────────────────────────────────────── */

/* ── Design Tokens ─────────────────────────────────────────────── */
:root {
  /* Marca / acentos */
  --accent: #FF7A29;
  --accent-2: #FF9550;
  --accent-deep: #C9551A;
  --accent-soft: rgba(255,122,41,0.10);
  --accent-border: rgba(255,122,41,0.32);
  --accent-glow: rgba(255,122,41,0.18);

  /* Superficies */
  --bg: #FAFAF7;
  --bg-elev: #FFFFFF;
  --surface: #F4F4F0;
  --surface-2: #E9E9E4;

  /* Bordes */
  --border: rgba(10,10,13,0.08);
  --border-strong: rgba(10,10,13,0.14);
  --border-accent: rgba(255,122,41,0.32);

  /* Texto */
  --text: #0A0A0D;
  --text-soft: #3D4047;
  --text-dim: #6B6E76;
  --text-faint: #9CA0A8;

  /* Estado */
  --success: #00A958;
  --danger: #DC2626;
  --warning: #D97706;

  /* Tipografía */
  --font-sans: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Inter", "Helvetica Neue", sans-serif;
  --font-serif: Georgia, Charter, "Times New Roman", serif;
  --font-mono: "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;

  /* Radios */
  --radius-sm: 8px;
  --radius: 12px;
  --radius-lg: 18px;
  --radius-xl: 24px;
  --radius-2xl: 32px;
  --radius-pill: 999px;

  /* Sombras */
  --shadow-sm: 0 1px 3px rgba(10,10,13,0.06), 0 4px 12px -2px rgba(10,10,13,0.04);
  --shadow-md: 0 4px 14px -2px rgba(10,10,13,0.08), 0 12px 32px -8px rgba(10,10,13,0.06);
  --shadow-lg: 0 12px 40px -8px rgba(10,10,13,0.18);
  --shadow-glow: 0 12px 32px -8px rgba(255,122,41,0.30);

  /* Transiciones */
  --t-fast: 0.15s ease;
  --t: 0.22s cubic-bezier(0.2, 0.8, 0.2, 1);
  --t-slow: 0.45s cubic-bezier(0.2, 0.8, 0.2, 1);
}

/* ── Reset y base ──────────────────────────────────────────────── */
*,*::before,*::after { margin:0; padding:0; box-sizing:border-box; }
html { -webkit-text-size-adjust:100%; -webkit-tap-highlight-color:transparent; scroll-behavior:smooth; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  line-height: 1.55;
  min-height: 100vh;
  text-rendering: optimizeLegibility;
}
a { color: inherit; text-decoration: none; }
button, input, textarea, select { font-family: inherit; color: inherit; }
button { cursor: pointer; background: none; border: none; }
img, svg, video { display: block; max-width: 100%; }
hr { border: none; border-top: 1px solid var(--border); margin: 24px 0; }

/* ── Tipografía base / wordmark ────────────────────────────────── */
.h1, .h2, .h3, .h4 { letter-spacing: -0.02em; line-height: 1.15; font-weight: 700; color: var(--text); }
.h1 { font-size: clamp(34px, 5vw, 56px); letter-spacing: -0.03em; }
.h2 { font-size: clamp(26px, 3.4vw, 38px); }
.h3 { font-size: clamp(20px, 2vw, 24px); }
.h4 { font-size: 17px; font-weight: 600; }
.eyebrow {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-deep);
}
.text-soft { color: var(--text-soft); }
.text-dim  { color: var(--text-dim); }
.text-faint{ color: var(--text-faint); }
.text-accent { color: var(--accent); }
.serif { font-family: var(--font-serif); }
.mono  { font-family: var(--font-mono); }

/* Wordmark FractAIll: negro + naranja + gris */
.fr-wordmark { font-weight: 700; letter-spacing: -0.01em; color: var(--text); }
.fr-wordmark .ai { color: var(--accent); }
.fr-wordmark .ll { color: rgba(10,10,13,0.45); }

/* ── Botones ───────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: -0.005em;
  border: 1px solid transparent;
  background: var(--surface);
  color: var(--text);
  transition: background var(--t), border-color var(--t), color var(--t), transform var(--t-fast), box-shadow var(--t);
  white-space: nowrap;
  user-select: none;
}
.btn:hover { background: var(--surface-2); }
.btn:active { transform: translateY(1px); }
.btn:disabled, .btn[aria-disabled="true"] { opacity: 0.5; pointer-events: none; }

.btn-primary {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent-deep);
  box-shadow: 0 6px 16px -6px rgba(255,122,41,0.5);
}
.btn-primary:hover { background: var(--accent-deep); }

.btn-ghost {
  background: transparent;
  border-color: var(--border);
  color: var(--text-soft);
}
.btn-ghost:hover { background: var(--surface); border-color: var(--border-strong); color: var(--text); }

.btn-outline {
  background: transparent;
  border-color: var(--accent-border);
  color: var(--accent-deep);
}
.btn-outline:hover { background: var(--accent-soft); }

.btn-danger {
  background: var(--danger);
  color: #fff;
  border-color: rgba(0,0,0,0.10);
}
.btn-danger:hover { filter: brightness(0.95); }

.btn-sm { padding: 6px 12px; font-size: 12.5px; border-radius: var(--radius-sm); }
.btn-lg { padding: 14px 24px; font-size: 15px; border-radius: var(--radius-lg); }
.btn-block { display: flex; width: 100%; }

/* ── Cards ─────────────────────────────────────────────────────── */
.card {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  transition: border-color var(--t), box-shadow var(--t), transform var(--t-fast);
}
.card-soft { background: var(--surface); box-shadow: none; }
.card-hover:hover { border-color: var(--border-strong); box-shadow: var(--shadow-md); transform: translateY(-2px); }
.card-accent { border-color: var(--accent-border); }

/* ── Inputs ────────────────────────────────────────────────────── */
.input, .textarea, .select {
  width: 100%;
  padding: 11px 14px;
  background: var(--bg-elev);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  font-size: 14.5px;
  color: var(--text);
  outline: none;
  transition: border-color var(--t), box-shadow var(--t), background var(--t);
}
.input::placeholder, .textarea::placeholder { color: var(--text-faint); }
.input:focus, .textarea:focus, .select:focus {
  border-color: var(--accent-border);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
.textarea { resize: vertical; min-height: 96px; line-height: 1.5; }
.label {
  display: block;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--text-soft);
  margin-bottom: 6px;
  letter-spacing: 0.01em;
}

/* ── Badges / chips ────────────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.02em;
  background: var(--surface);
  color: var(--text-soft);
  border: 1px solid var(--border);
}
.badge-accent  { background: var(--accent-soft); color: var(--accent-deep); border-color: var(--accent-border); }
.badge-success { background: rgba(0,169,88,0.10); color: var(--success); border-color: rgba(0,169,88,0.25); }
.badge-danger  { background: rgba(220,38,38,0.10); color: var(--danger);  border-color: rgba(220,38,38,0.25); }
.badge-warning { background: rgba(217,119,6,0.10); color: var(--warning); border-color: rgba(217,119,6,0.25); }

/* ── Avatar ────────────────────────────────────────────────────── */
.avatar {
  width: 36px; height: 36px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-deep));
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 14px;
  overflow: hidden;
  flex-shrink: 0;
}
.avatar img { width: 100%; height: 100%; object-fit: cover; }
.avatar-sm { width: 28px; height: 28px; font-size: 12px; }
.avatar-lg { width: 56px; height: 56px; font-size: 20px; }
.avatar-xl { width: 96px; height: 96px; font-size: 32px; }

/* ── Layout / utilities ────────────────────────────────────────── */
.shell        { max-width: 1280px; margin: 0 auto; padding: 24px 28px; }
.shell-narrow { max-width: 920px;  margin: 0 auto; padding: 24px 28px; }
.shell-prose  { max-width: 720px;  margin: 0 auto; padding: 30px 24px; }
.container-sm { max-width: 680px;  margin: 0 auto; padding: 30px 24px; }

.flex       { display: flex; gap: 12px; align-items: center; }
.flex-col   { display: flex; flex-direction: column; gap: 12px; }
.flex-between { display: flex; justify-content: space-between; align-items: center; gap: 12px; }
.flex-wrap  { flex-wrap: wrap; }
.flex-1     { flex: 1; }
.gap-4 { gap: 4px; } .gap-8 { gap: 8px; } .gap-12 { gap: 12px; } .gap-16 { gap: 16px; } .gap-24 { gap: 24px; }

.grid-cards   { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 14px; }
.grid-cards-lg{ display: grid; grid-template-columns: repeat(auto-fill, minmax(340px, 1fr)); gap: 18px; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

.divider { height: 1px; background: var(--border); border: none; margin: 24px 0; }

.muted { color: var(--text-dim); }
.center { text-align: center; }
.right  { text-align: right; }

.hidden { display: none !important; }
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0;
  margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}

/* Espaciados verticales rápidos */
.mt-8 {margin-top:8px}.mt-16{margin-top:16px}.mt-24{margin-top:24px}.mt-32{margin-top:32px}
.mb-8 {margin-bottom:8px}.mb-16{margin-bottom:16px}.mb-24{margin-bottom:24px}.mb-32{margin-bottom:32px}

/* ── Links semánticos ──────────────────────────────────────────── */
.link {
  color: var(--accent-deep);
  border-bottom: 1px solid transparent;
  transition: border-color var(--t), color var(--t);
}
.link:hover { color: var(--accent); border-bottom-color: var(--accent-border); }

/* ── Footer global ─────────────────────────────────────────────── */
.fr-footer {
  border-top: 1px solid var(--border);
  padding: 36px 28px;
  margin-top: 48px;
  color: var(--text-dim);
  font-size: 13px;
  text-align: center;
  background: var(--bg);
}
.fr-footer a {
  color: var(--text-soft);
  margin: 0 10px;
  border-bottom: 1px solid transparent;
  transition: color var(--t), border-color var(--t);
}
.fr-footer a:hover { color: var(--accent-deep); border-bottom-color: var(--accent-border); }

/* ── Animaciones reutilizables ─────────────────────────────────── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}
@keyframes shimmer {
  0%   { background-position: -800px 0; }
  100% { background-position: 800px 0; }
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50%      { opacity: 0.55; }
}
.fade-up { animation: fadeUp .35s cubic-bezier(0.2,0.8,0.2,1) both; }
.fade-in { animation: fadeIn .25s ease both; }
.skeleton {
  background: linear-gradient(90deg, var(--surface) 0%, var(--surface-2) 50%, var(--surface) 100%);
  background-size: 800px 100%;
  animation: shimmer 1.4s linear infinite;
  border-radius: var(--radius-sm);
}

/* ── Focus accesible ──────────────────────────────────────────── */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 4px;
}

/* ── Selección ────────────────────────────────────────────────── */
::selection { background: var(--accent-soft); color: var(--text); }

/* ── Scrollbars sutiles ───────────────────────────────────────── */
*::-webkit-scrollbar { width: 10px; height: 10px; }
*::-webkit-scrollbar-track { background: transparent; }
*::-webkit-scrollbar-thumb {
  background: rgba(10,10,13,0.18);
  border-radius: 8px;
  border: 2px solid transparent;
  background-clip: padding-box;
}
*::-webkit-scrollbar-thumb:hover { background: rgba(10,10,13,0.32); background-clip: padding-box; border: 2px solid transparent; }

/* ── Responsive base ──────────────────────────────────────────── */
@media (max-width: 780px) {
  .shell, .shell-narrow { padding: 18px 16px; }
  .shell-prose, .container-sm { padding: 22px 18px; }
  .grid-2 { grid-template-columns: 1fr; }
  .h1 { font-size: clamp(28px, 7vw, 38px); }
  .h2 { font-size: clamp(22px, 5.5vw, 28px); }
  input, textarea, select { font-size: 16px !important; } /* iOS no-zoom on focus */
  .btn { min-height: 40px; }
}
@media (max-width: 480px) {
  .grid-cards { grid-template-columns: 1fr; }
}

/* ── Reducir movimiento ───────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}