/* ============================================================
   SmartFisio — Base: reset, globales y utilidades
   ============================================================ */

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

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

body {
  font-family: var(--font);
  font-size: var(--fs-base);
  line-height: 1.5;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  transition: background var(--t-base) var(--ease), color var(--t-base) var(--ease);
}

img, svg { display: block; max-width: 100%; }
button { font: inherit; color: inherit; background: none; border: none; cursor: pointer; }
input, select, textarea { font: inherit; color: inherit; }
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
ul, ol { list-style: none; }

h1, h2, h3, h4 { font-weight: 700; letter-spacing: -0.02em; line-height: 1.25; }
h1 { font-size: var(--fs-2xl); }
h2 { font-size: var(--fs-xl); }
h3 { font-size: var(--fs-md); }

:focus-visible { outline: none; box-shadow: var(--shadow-focus); border-radius: var(--radius-sm); }

::selection { background: var(--brand-300); color: var(--brand-ink); }

/* Scrollbars discretos */
* { scrollbar-width: thin; scrollbar-color: var(--gray-300) transparent; }
[data-theme="dark"] * { scrollbar-color: var(--gray-800) transparent; }
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-thumb { background: var(--border-strong); border-radius: 8px; }
::-webkit-scrollbar-track { background: transparent; }

/* ---- Utilidades ---- */
.muted { color: var(--text-2); }
.small { font-size: var(--fs-sm); }
.mono { font-family: var(--font-mono); }
.flex { display: flex; align-items: center; gap: var(--sp-2); }
.flex-between { display: flex; align-items: center; justify-content: space-between; gap: var(--sp-2); }
.grow { flex: 1; }
.hidden { display: none !important; }
.text-center { text-align: center; }
.truncate { overflow: hidden; white-space: nowrap; text-overflow: ellipsis; }

/* ---- Animaciones globales ---- */
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.96); }
  to   { opacity: 1; transform: scale(1); }
}
@keyframes slideUpSheet {
  from { transform: translateY(100%); }
  to   { transform: translateY(0); }
}
@keyframes toastIn {
  from { opacity: 0; transform: translateY(12px) scale(0.97); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}
@keyframes checkPop {
  0% { transform: scale(0); opacity: 0; }
  60% { transform: scale(1.15); opacity: 1; }
  100% { transform: scale(1); }
}
@keyframes shimmer {
  from { background-position: -400px 0; }
  to   { background-position: 400px 0; }
}
@keyframes pulseDot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.35; }
}

.anim-fade-up { animation: fadeUp var(--t-base) var(--ease) both; }
.anim-scale-in { animation: scaleIn var(--t-base) var(--ease) both; }

/* Skeleton loader */
.skeleton {
  border-radius: var(--radius-sm);
  background: linear-gradient(90deg, var(--bg-sunken) 25%, var(--surface-hover) 50%, var(--bg-sunken) 75%);
  background-size: 800px 100%;
  animation: shimmer 1.4s linear infinite;
  color: transparent !important;
  user-select: none;
}

/* Accesibilidad: reducir movimiento */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}