/* =============================================================
   base.css — Reset moderno + tipografía + estilos base
   Importa Inter y JetBrains Mono vía Google Fonts (en el HTML).
   Todos los elementos respetan las variables de tokens.css.
   ============================================================= */

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

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  tab-size: 4;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-regular);
  line-height: var(--line-height-normal);
  color: var(--color-text-primary);
  background-color: var(--color-bg-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100dvh;
}

/* --- Tipografía base --- */
h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  color: var(--color-text-primary);
}

p {
  line-height: var(--line-height-normal);
  color: var(--color-text-secondary);
}

/* --- Links --- */
a {
  color: var(--color-text-primary);
  text-decoration: none;
  transition: color var(--transition-fast), opacity var(--transition-fast);
}

a:hover {
  opacity: 0.8;
}

/* --- Imágenes y media --- */
img, video, svg {
  display: block;
  max-width: 100%;
}

/* --- Listas --- */
ul, ol {
  list-style: none;
}

/* --- Botones --- */
button {
  font-family: var(--font-sans);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
  line-height: 1;
  transition:
    background var(--transition-fast),
    color var(--transition-fast),
    border-color var(--transition-fast),
    opacity var(--transition-fast);
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.5;
}

/* --- Inputs, select, textarea --- */
input,
select,
textarea {
  font-family: var(--font-sans);
  font-size: var(--font-size-base);
  color: var(--color-text-primary);
  background: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-4);
  width: 100%;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  -webkit-appearance: none;
  appearance: none;
  line-height: var(--line-height-normal);
}

input::placeholder,
textarea::placeholder {
  color: var(--color-text-muted);
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--color-brand);
  box-shadow: 0 0 0 3px var(--color-brand-subtle);
}

/* Inputs numéricos: teclado numérico en mobile, fuente mono */
input[type="number"] {
  font-family: var(--font-mono);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-medium);
  text-align: center;
  -moz-appearance: textfield;
  inputmode: numeric;
}

input[type="number"]::-webkit-inner-spin-button,
input[type="number"]::-webkit-outer-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

/* --- Foco accesible global --- */
:focus-visible {
  outline: 2px solid var(--color-brand);
  outline-offset: 2px;
}

/* --- Código inline --- */
code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  background: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 2px 6px;
  color: var(--color-text-secondary);
}

/* --- Pre (bloques de código) --- */
pre {
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
  background: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  overflow-x: auto;
  line-height: var(--line-height-relaxed);
  color: var(--color-text-secondary);
}

/* --- Helpers de layout comunes --- */
.container {
  width: 100%;
  max-width: 480px;
  margin: 0 auto;
  padding: 0 var(--space-5);
}

.muted {
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
}