/* =============================================================
   brand.css — Identidad visual Opción Sigma
   =============================================================
   Tokens de diseño oficiales de la constelación Opción Sigma.
   Fuente: CLAUDE.md §4. NO modificar valores sin actualizar
   también ese documento.
   ============================================================= */

:root {
  /* --- OPS · paleta oficial ---------------------------------- */
  --ops-blanco:         #FCF5F5;
  --ops-negro:          #1A1A1A;
  --ops-dorado-claro:   #EAD592;
  --ops-dorado-medio:   #C8A24E;
  --ops-dorado-oscuro:  #B58427;

  /* Gradiente corporativo Σ (vertical oficial) */
  --ops-gradient: linear-gradient(
    180deg,
    var(--ops-dorado-claro) 0%,
    var(--ops-dorado-oscuro) 100%
  );

  /* Gradiente horizontal (para borders superiores de KPIs) */
  --ops-gradient-horizontal: linear-gradient(
    90deg,
    var(--ops-dorado-claro) 0%,
    var(--ops-dorado-oscuro) 100%
  );

  /* --- Sistema dashboard ------------------------------------- */
  --bg-deep:      #0d0d0d;
  --card-bg:      #161616;
  --card-bg-hover:#1c1c1c;
  --border:       #272727;
  --border-hover: #3a3a3a;
  --text-muted:   #8a8a8a;
  --text-secondary: #b8b8b8;

  /* --- Estados ----------------------------------------------- */
  --green:        #4ade80;
  --green-bg:     rgba(74, 222, 128, 0.1);
  --red:          #ef4444;
  --red-bg:       rgba(239, 68, 68, 0.1);
  --blue:         #60a5fa;
  --blue-bg:      rgba(96, 165, 250, 0.1);
  --purple:       #a78bfa;

  /* --- Spacing --------------------------------------------- */
  --space-xs:  4px;
  --space-sm:  8px;
  --space-md:  16px;
  --space-lg:  24px;
  --space-xl:  36px;
  --space-2xl: 48px;

  /* --- Radius --------------------------------------------- */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;

  /* --- Shadows -------------------------------------------- */
  --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-elevated: 0 8px 32px rgba(0, 0, 0, 0.5);
  --shadow-glow-gold: 0 0 20px rgba(200, 162, 78, 0.15);

  /* --- Typography scale ----------------------------------- */
  --font-sans: 'Commissioner', -apple-system, BlinkMacSystemFont,
               'Segoe UI', sans-serif;

  --text-xs:  11px;
  --text-sm:  12px;
  --text-md:  14px;
  --text-lg:  16px;
  --text-xl:  18px;
  --text-2xl: 22px;
  --text-3xl: 28px;
  --text-4xl: 36px;
}

/* --- Reset mínimo ----------------------------------------- */

*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

/* El atributo HTML `hidden` DEBE esconder el elemento aunque
 * clases posteriores definan `display`. Sin esta regla, cosas
 * como `.loader-overlay { display: grid }` ganan especificidad
 * sobre el `[hidden] { display: none }` del user agent.
 */
[hidden] { display: none !important; }

body {
  font-family: var(--font-sans);
  background: var(--bg-deep);
  color: var(--ops-blanco);
  font-weight: 400;
  letter-spacing: -0.01em;
  line-height: 1.5;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* --- Elementos base --------------------------------------- */

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
}

input, textarea, select {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
}

a {
  color: var(--ops-dorado-medio);
  text-decoration: none;
  transition: color 0.15s ease;
}

a:hover {
  color: var(--ops-dorado-claro);
}

/* --- Isotipo Σ (logo cuadrado con gradiente) -------------- */

.brand-sigma {
  width: 36px;
  height: 36px;
  background: var(--ops-gradient);
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  font-size: 22px;
  color: var(--ops-negro);
  letter-spacing: -0.05em;
  flex-shrink: 0;
}

.brand-sigma.lg {
  width: 52px;
  height: 52px;
  font-size: 32px;
  border-radius: var(--radius-md);
}

.brand-sigma.xl {
  width: 72px;
  height: 72px;
  font-size: 44px;
  border-radius: var(--radius-md);
}

/* --- Utilidades ----------------------------------------- */

.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;
}

.text-muted       { color: var(--text-muted); }
.text-secondary   { color: var(--text-secondary); }
.text-gold        { color: var(--ops-dorado-medio); }
.text-gold-light  { color: var(--ops-dorado-claro); }
.text-green       { color: var(--green); }
.text-red         { color: var(--red); }

/* Tagline corporativa */
.ops-tagline {
  font-size: var(--text-xs);
  color: var(--text-muted);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  font-weight: 300;
}