/* ============================================================
   ACHIROU · CURSOS — Design Tokens
   Paleta derivada del logo AC (cyan → azul profundo).
   Psicología del color: azul = confianza + autoridad;
   cyan = innovación; verde = éxito/gratis; ámbar = destacado.
   ============================================================ */

/* ---------- Fuentes autohospedadas (variable) ---------- */
@font-face {
  font-family: 'Bricolage Grotesque';
  font-style: normal;
  font-weight: 200 800;
  font-display: swap;
  src: url('../fonts/bricolage-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'Bricolage Grotesque';
  font-style: normal;
  font-weight: 200 800;
  font-display: swap;
  src: url('../fonts/bricolage-latin-ext.woff2') format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}

@font-face {
  font-family: 'Instrument Sans';
  font-style: normal;
  font-weight: 400 700;
  font-display: swap;
  src: url('../fonts/instrument-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'Instrument Sans';
  font-style: normal;
  font-weight: 400 700;
  font-display: swap;
  src: url('../fonts/instrument-latin-ext.woff2') format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}

@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 400 700;
  font-display: swap;
  src: url('../fonts/jetbrains-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 400 700;
  font-display: swap;
  src: url('../fonts/jetbrains-latin-ext.woff2') format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}

/* ---------- Tokens raíz (light por defecto) ---------- */
:root {
  /* Marca */
  --brand-cyan: #2AB7E6;
  --brand-blue: #1B5FBF;
  --brand-blue-deep: #0A1628;
  --brand-gradient: linear-gradient(135deg, #2AB7E6 0%, #1B5FBF 60%, #0F3A87 100%);

  /* Semántico */
  --success: #10B981;
  --success-soft: #D1FAE5;
  --warning: #F59E0B;
  --warning-soft: #FEF3C7;
  --danger: #DC2626;

  /* Superficies (light) */
  --bg: #FAFBFC;
  --bg-alt: #F1F5F9;
  --surface: #FFFFFF;
  --surface-2: #F8FAFC;
  --surface-elevated: #FFFFFF;
  --border: #E2E8F0;
  --border-strong: #CBD5E1;

  /* Texto (light) */
  --text: #0F172A;
  --text-muted: #475569;
  --text-subtle: #64748B;
  --text-on-brand: #FFFFFF;

  /* Interacción */
  --focus-ring: 0 0 0 3px rgba(42, 183, 230, 0.35);
  --link: var(--brand-blue);
  --link-hover: var(--brand-cyan);

  /* Tipografía */
  --font-display: 'Bricolage Grotesque', 'Segoe UI', system-ui, sans-serif;
  --font-body: 'Instrument Sans', 'Segoe UI', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, 'Cascadia Code', monospace;

  /* Escala tipográfica fluida (clamp) */
  --fs-xs: 0.75rem;      /* 12 */
  --fs-sm: 0.875rem;     /* 14 */
  --fs-base: 1rem;       /* 16 */
  --fs-md: 1.125rem;     /* 18 */
  --fs-lg: clamp(1.25rem, 1.1rem + 0.6vw, 1.5rem);
  --fs-xl: clamp(1.5rem, 1.2rem + 1.2vw, 2rem);
  --fs-2xl: clamp(2rem, 1.5rem + 2.2vw, 3rem);
  --fs-3xl: clamp(2.5rem, 1.8rem + 3.2vw, 4rem);
  --fs-4xl: clamp(3rem, 2rem + 4.5vw, 5.5rem);

  --lh-tight: 1.15;
  --lh-snug: 1.3;
  --lh-normal: 1.55;
  --lh-relaxed: 1.7;

  --tracking-tight: -0.02em;
  --tracking-normal: 0;
  --tracking-wide: 0.04em;
  --tracking-mono: 0.02em;

  /* Espaciado (escala 4/8) */
  --sp-1: 0.25rem;
  --sp-2: 0.5rem;
  --sp-3: 0.75rem;
  --sp-4: 1rem;
  --sp-5: 1.25rem;
  --sp-6: 1.5rem;
  --sp-7: 1.75rem;
  --sp-8: 2rem;
  --sp-10: 2.5rem;
  --sp-12: 3rem;
  --sp-16: 4rem;
  --sp-20: 5rem;
  --sp-24: 6rem;

  /* Radios */
  --radius-xs: 4px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-pill: 999px;

  /* Sombras (light) */
  --shadow-xs: 0 1px 2px rgba(15, 23, 42, 0.05);
  --shadow-sm: 0 2px 4px rgba(15, 23, 42, 0.06), 0 1px 2px rgba(15, 23, 42, 0.04);
  --shadow-md: 0 6px 12px -2px rgba(15, 23, 42, 0.08), 0 2px 4px rgba(15, 23, 42, 0.05);
  --shadow-lg: 0 18px 32px -8px rgba(15, 23, 42, 0.12), 0 4px 8px rgba(15, 23, 42, 0.06);
  --shadow-glow: 0 0 0 1px rgba(42, 183, 230, 0.15), 0 8px 24px -6px rgba(42, 183, 230, 0.25);

  /* Motion */
  --motion-fast: 150ms;
  --motion-base: 220ms;
  --motion-slow: 380ms;
  --easing: cubic-bezier(0.2, 0.7, 0.2, 1);

  /* Layout */
  --container: 1200px;
  --container-narrow: 880px;
  --container-wide: 1360px;
  --header-h: 68px;

  /* Z-index escalado */
  --z-nav: 30;
  --z-drop: 40;
  --z-modal: 50;
  --z-toast: 60;
}

/* ---------- Dark mode (opt-in via data-theme o auto) ---------- */
:root[data-theme='dark'] {
  --bg: #060B14;
  --bg-alt: #0A1628;
  --surface: #0E1B2E;
  --surface-2: #142338;
  --surface-elevated: #172A45;
  --border: #1E3355;
  --border-strong: #2A4574;

  --text: #F1F5F9;
  --text-muted: #94A3B8;
  --text-subtle: #64748B;

  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.35), 0 1px 2px rgba(0, 0, 0, 0.25);
  --shadow-md: 0 8px 16px -4px rgba(0, 0, 0, 0.45), 0 2px 4px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 24px 48px -12px rgba(0, 0, 0, 0.5), 0 4px 12px rgba(0, 0, 0, 0.3);
  --shadow-glow: 0 0 0 1px rgba(42, 183, 230, 0.35), 0 12px 32px -6px rgba(42, 183, 230, 0.4);

  --link: var(--brand-cyan);
  --link-hover: #7BD5F5;
}

/* Modo automático — solo si el usuario no eligió explícito */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme='light']):not([data-theme='dark']) {
    --bg: #060B14;
    --bg-alt: #0A1628;
    --surface: #0E1B2E;
    --surface-2: #142338;
    --surface-elevated: #172A45;
    --border: #1E3355;
    --border-strong: #2A4574;

    --text: #F1F5F9;
    --text-muted: #94A3B8;
    --text-subtle: #64748B;

    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.4);
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.35), 0 1px 2px rgba(0, 0, 0, 0.25);
    --shadow-md: 0 8px 16px -4px rgba(0, 0, 0, 0.45), 0 2px 4px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 24px 48px -12px rgba(0, 0, 0, 0.5), 0 4px 12px rgba(0, 0, 0, 0.3);

    --link: var(--brand-cyan);
    --link-hover: #7BD5F5;
  }
}

/* ---------- Accesibilidad: movimiento reducido ---------- */
@media (prefers-reduced-motion: reduce) {
  :root {
    --motion-fast: 0ms;
    --motion-base: 0ms;
    --motion-slow: 0ms;
  }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}