/* SalonOS · Tokens de Diseño y 3 Temas en Vivo (Zero-CDN / Offline First) */

:root {
  /* Tipografía del sistema refinada (cero dependencias CDN) */
  --font-display: "Plus Jakarta Sans", "Avenir Next", "Segoe UI", "Inter", system-ui, -apple-system, sans-serif;
  --font-sans: "Inter", "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: "JetBrains Mono", "SFMono-Regular", ui-monospace, Menlo, Consolas, monospace;

  /* Radios y espaciado */
  --radius-xs: 6px;
  --radius-sm: 10px;
  --radius-md: 14px;
  --radius-lg: 18px;
  --radius-xl: 24px;
  --radius-pill: 9999px;

  /* Tema por defecto: Editorial Cálido */
  --bg-canvas: #FAF7F2;
  --bg-surface: #FFFFFF;
  --bg-surface-alt: #F4EFE8;
  --bg-surface-hover: #EFE8DE;
  --border: #E8DFD5;
  --border-strong: #D3C5B6;

  --text-primary: #26201C;
  --text-secondary: #5E554E;
  --text-muted: #766C64;

  --sidebar-bg: #1E1916;
  --sidebar-surface: #2B2420;
  --sidebar-border: rgba(255, 255, 255, 0.1);
  --sidebar-text: #FAF7F2;
  --sidebar-muted: #CBBFB4;

  --accent: #B87D5B;
  --accent-strong: #8F5636;
  --accent-hover: #7A472B;
  --accent-soft: #F7EAE1;
  --accent-soft-border: #E8C9B5;
  --accent-text: #7A472B;
  --accent-contrast: #FFFFFF;

  --success: #1D6F42;
  --success-soft: #E9F7EF;
  --success-border: #B7E4C7;
  --warning: #A15C07;
  --warning-soft: #FEF5E7;
  --warning-border: #F5CBA7;
  --danger: #B42318;
  --danger-soft: #FEECEB;
  --danger-border: #F9C6C2;
  --info: #155E75;
  --info-soft: #ECFEFF;
  --info-border: #A5F3FC;

  --interleave-bg: #EDF8F2;
  --interleave-border: #2F855A;
  --interleave-text: #1B5E3F;

  --shadow-xs: 0 1px 2px rgba(30, 25, 22, 0.05);
  --shadow-sm: 0 2px 8px rgba(30, 25, 22, 0.06);
  --shadow-md: 0 10px 26px rgba(30, 25, 22, 0.09);
  --shadow-device: 0 24px 60px rgba(30, 25, 22, 0.18);

  --scrollbar-track: #EFE8DE;
  --scrollbar-thumb: #B8A99A;

  --focus-ring: #8F5636;

  color-scheme: light dark;
  accent-color: var(--accent-strong);
  scrollbar-color: var(--scrollbar-thumb) var(--scrollbar-track);
}

:root:has(> head > meta[name="color-scheme"][content="light"]) {
  color-scheme: light;
}

:root:has(> head > meta[name="color-scheme"][content="dark"]) {
  color-scheme: dark;
}

/* Tema 2: Esmeralda SaaS */
:root[data-theme="emerald"] {
  --bg-canvas: #F8FAFC;
  --bg-surface: #FFFFFF;
  --bg-surface-alt: #F1F5F9;
  --bg-surface-hover: #E2E8F0;
  --border: #E2E8F0;
  --border-strong: #CBD5E1;

  --text-primary: #0F172A;
  --text-secondary: #334155;
  --text-muted: #526175;

  --sidebar-bg: #0F172A;
  --sidebar-surface: #1E293B;
  --sidebar-border: rgba(255, 255, 255, 0.1);
  --sidebar-text: #F8FAFC;
  --sidebar-muted: #94A3B8;

  --accent: #0F766E;
  --accent-strong: #0F766E;
  --accent-hover: #115E59;
  --accent-soft: #E6F7F5;
  --accent-soft-border: #99F6E4;
  --accent-text: #0F766E;
  --accent-contrast: #FFFFFF;

  --success: #15803D;
  --success-soft: #DCFCE7;
  --success-border: #86EFAC;
  --warning: #A16207;
  --warning-soft: #FEF9C3;
  --warning-border: #FDE047;
  --danger: #B91C1C;
  --danger-soft: #FEE2E2;
  --danger-border: #FCA5A5;
  --info: #0369A1;
  --info-soft: #E0F2FE;
  --info-border: #7DD3FC;

  --interleave-bg: #E6F7F5;
  --interleave-border: #0F766E;
  --interleave-text: #115E59;

  --shadow-xs: 0 1px 2px rgba(15, 23, 42, 0.05);
  --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 12px 28px rgba(15, 23, 42, 0.09);
  --shadow-device: 0 24px 60px rgba(15, 23, 42, 0.16);

  --scrollbar-track: #E2E8F0;
  --scrollbar-thumb: #94A3B8;
  --focus-ring: #0F766E;
}

/* Tema 3: Boutique Oscuro */
:root[data-theme="boutique"] {
  --bg-canvas: #141416;
  --bg-surface: #1C1C20;
  --bg-surface-alt: #24242A;
  --bg-surface-hover: #2E2E36;
  --border: #2C2C32;
  --border-strong: #3F3F48;

  --text-primary: #F4F4F6;
  --text-secondary: #D4D2DC;
  --text-muted: #A6A3B0;

  --sidebar-bg: #0E0E10;
  --sidebar-surface: #19191E;
  --sidebar-border: rgba(255, 255, 255, 0.09);
  --sidebar-text: #F4F4F6;
  --sidebar-muted: #9E9A93;

  --accent: #C9A66B;
  --accent-strong: #C9A66B;
  --accent-hover: #DFBF86;
  --accent-soft: rgba(201, 166, 107, 0.16);
  --accent-soft-border: rgba(201, 166, 107, 0.45);
  --accent-text: #E7C992;
  --accent-contrast: #141416;

  --success: #4ADE80;
  --success-soft: rgba(74, 222, 128, 0.14);
  --success-border: rgba(74, 222, 128, 0.38);
  --warning: #FBBF24;
  --warning-soft: rgba(251, 191, 36, 0.15);
  --warning-border: rgba(251, 191, 36, 0.42);
  --danger: #F87171;
  --danger-soft: rgba(248, 113, 113, 0.16);
  --danger-border: rgba(248, 113, 113, 0.42);
  --info: #38BDF8;
  --info-soft: rgba(56, 189, 248, 0.14);
  --info-border: rgba(56, 189, 248, 0.4);

  --interleave-bg: rgba(74, 222, 128, 0.11);
  --interleave-border: #4ADE80;
  --interleave-text: #86EFAC;

  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.35);
  --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 14px 32px rgba(0, 0, 0, 0.52);
  --shadow-device: 0 28px 70px rgba(0, 0, 0, 0.72);

  --scrollbar-track: #0E0E10;
  --scrollbar-thumb: #464652;
  --focus-ring: #E7C992;
}

/* Base reset & accessibility */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100dvh;
  background-color: var(--bg-canvas);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  line-height: 1.5;
  transition: background-color 0.18s ease, color 0.18s ease;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  margin: 0;
  line-height: 1.25;
  letter-spacing: -0.015em;
}

p {
  margin: 0;
}

button,
input,
select,
textarea {
  font: inherit;
  color: inherit;
}

:focus-visible {
  outline: 2.5px solid var(--focus-ring);
  outline-offset: 2px;
}

::selection {
  background: var(--accent-soft);
  color: var(--text-primary);
}

.mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

.visually-hidden {
  position: absolute;
  clip-path: inset(50%);
  overflow: hidden;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  border: 0;
  white-space: nowrap;
}

@media (forced-colors: active) {
  .badge,
  .card,
  .btn,
  .nav-item[aria-current="page"],
  .tab-btn[aria-selected="true"] {
    border: 1px solid CanvasText;
  }
}