/* ============================================================
   base.css — Reset + Typography + Utilidades globales
   Mobile-first
   ============================================================ */

/* --- Google Fonts: Inter --- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

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

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  -webkit-tap-highlight-color: transparent;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-normal);
  line-height: var(--line-height-normal);
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  min-height: 100vh;
  min-height: 100dvh;
}

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

h1 { font-size: var(--font-size-2xl); }
h2 { font-size: var(--font-size-xl); }
h3 { font-size: var(--font-size-lg); }
h4 { font-size: var(--font-size-md); font-weight: var(--font-weight-medium); }

p {
  margin-bottom: var(--space-md);
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-primary-dark);
}

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

/* --- Imágenes --- */
img, svg {
  display: block;
  max-width: 100%;
  height: auto;
}

/* --- Formularios --- */
button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
  line-height: inherit;
  color: inherit;
  border: none;
  outline: none;
  background: none;
}

button {
  cursor: pointer;
  -webkit-user-select: none;
  user-select: none;
}

input, select, textarea {
  display: block;
  width: 100%;
}

/* --- Tabla --- */
table {
  border-collapse: collapse;
  width: 100%;
}

/* --- Scrollbar sutil --- */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-text-muted);
}

/* --- Focus visible (accesibilidad) --- */
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* --- Selection --- */
::selection {
  background: var(--color-primary-bg);
  color: var(--color-primary-dark);
}

/* ============================================================
   Utilidades
   ============================================================ */

/* --- Display --- */
.hidden        { display: none !important; }
.block         { display: block; }
.flex          { display: flex; }
.flex-center   { display: flex; align-items: center; justify-content: center; }
.flex-between  { display: flex; align-items: center; justify-content: space-between; }
.flex-col      { display: flex; flex-direction: column; }
.flex-wrap     { flex-wrap: wrap; }
.flex-1        { flex: 1; }
.gap-xs        { gap: var(--space-xs); }
.gap-sm        { gap: var(--space-sm); }
.gap-md        { gap: var(--space-md); }
.gap-lg        { gap: var(--space-lg); }

/* --- Texto --- */
.text-xs       { font-size: var(--font-size-xs); }
.text-sm       { font-size: var(--font-size-sm); }
.text-md       { font-size: var(--font-size-md); }
.text-lg       { font-size: var(--font-size-lg); }
.text-xl       { font-size: var(--font-size-xl); }
.text-center   { text-align: center; }
.text-right    { text-align: right; }
.text-bold     { font-weight: var(--font-weight-bold); }
.text-semibold { font-weight: var(--font-weight-semibold); }
.text-medium   { font-weight: var(--font-weight-medium); }
.text-muted    { color: var(--color-text-secondary); }
.text-primary  { color: var(--color-primary); }
.text-success  { color: var(--color-success); }
.text-danger   { color: var(--color-danger); }
.text-warning  { color: var(--color-warning); }
.truncate      { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* --- Spacing --- */
.mt-sm  { margin-top: var(--space-sm); }
.mt-md  { margin-top: var(--space-md); }
.mt-lg  { margin-top: var(--space-lg); }
.mb-sm  { margin-bottom: var(--space-sm); }
.mb-md  { margin-bottom: var(--space-md); }
.mb-lg  { margin-bottom: var(--space-lg); }
.p-sm   { padding: var(--space-sm); }
.p-md   { padding: var(--space-md); }
.p-lg   { padding: var(--space-lg); }
.px-md  { padding-left: var(--space-md); padding-right: var(--space-md); }
.py-md  { padding-top: var(--space-md); padding-bottom: var(--space-md); }

/* --- Bordes y sombras --- */
.rounded-sm { border-radius: var(--radius-sm); }
.rounded-md { border-radius: var(--radius-md); }
.rounded-lg { border-radius: var(--radius-lg); }
.shadow-sm  { box-shadow: var(--shadow-sm); }
.shadow-md  { box-shadow: var(--shadow-md); }

/* --- Responsive helpers --- */
/* Solo móvil (ocultar en desktop) */
@media (min-width: 768px) {
  .mobile-only { display: none !important; }
}

/* Solo desktop (ocultar en móvil) */
.desktop-only { display: none !important; }
@media (min-width: 768px) {
  .desktop-only { display: flex !important; }
  .desktop-only-block { display: block !important; }
}

/* --- Loading spinner --- */
.spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 2px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: var(--radius-full);
  animation: spin 0.6s linear infinite;
}

.spinner--lg {
  width: 36px;
  height: 36px;
  border-width: 3px;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* --- Screen reader only --- */
.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;
}