/* base.css — Elementos base y componentes reutilizables. Estética P5:
   tipografía display pesada, botones inclinados, paneles con sombra dura. */

body {
  font-family: var(--font-sans);
  font-size: var(--fs-base);
  font-weight: var(--fw-regular);
  color: var(--text);
  background-color: var(--bg);
  background-image: var(--bg-gradient);
  background-size: var(--bg-size);
  background-attachment: fixed;
  /* Los elementos inclinados/girados asoman sus esquinas fuera del contenedor:
     nunca deben provocar scroll horizontal. */
  overflow-x: clip;
}

/* ---- View Transitions entre páginas (MPA, progresivo) ----
   El navegador anima la navegación completa; la nav se mantiene fija como
   elemento compartido y el contenido entra con un deslizamiento corto. */
@view-transition {
  navigation: auto;
}
.app-nav {
  view-transition-name: app-nav;
}
.bottom-nav {
  view-transition-name: bottom-nav;
}
@media (prefers-reduced-motion: no-preference) {
  ::view-transition-old(root) {
    animation: vt-out 160ms var(--ease) both;
  }
  ::view-transition-new(root) {
    animation: vt-in 260ms var(--ease) both;
  }
}
@keyframes vt-out {
  to {
    opacity: 0;
    transform: translateY(-6px);
  }
}
@keyframes vt-in {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
}

/* ---- Entrada escalonada de tarjetas (con resorte) ---- */
@media (prefers-reduced-motion: no-preference) {
  .tracker-list > *,
  .habit-list > *,
  .stats-row > *,
  .fa-list > *,
  .quick-links > * {
    animation: rise-in 520ms var(--ease-spring) backwards;
    animation-delay: calc(var(--i, 0) * 55ms);
  }
  .tracker-list > :nth-child(2), .habit-list > :nth-child(2), .stats-row > :nth-child(2), .fa-list > :nth-child(2), .quick-links > :nth-child(2) { --i: 1; }
  .tracker-list > :nth-child(3), .habit-list > :nth-child(3), .stats-row > :nth-child(3), .fa-list > :nth-child(3), .quick-links > :nth-child(3) { --i: 2; }
  .tracker-list > :nth-child(4), .habit-list > :nth-child(4), .stats-row > :nth-child(4), .fa-list > :nth-child(4), .quick-links > :nth-child(4) { --i: 3; }
  .tracker-list > :nth-child(5), .habit-list > :nth-child(5), .fa-list > :nth-child(5) { --i: 4; }
  .tracker-list > :nth-child(6), .habit-list > :nth-child(6) { --i: 5; }
  .tracker-list > :nth-child(n + 7), .habit-list > :nth-child(n + 7) { --i: 6; }
}
@keyframes rise-in {
  from {
    opacity: 0;
    transform: translateY(16px) scale(0.98);
  }
}

/* ---- Rayas en movimiento para barras de progreso ---- */
@keyframes stripes-flow {
  to {
    background-position: 28px 0;
  }
}

h1,
h2,
h3 {
  font-family: var(--font-display);
  font-weight: 900;
  font-style: italic;
  text-transform: uppercase;
  line-height: 1.08;
  letter-spacing: -0.015em;
}

h1 {
  font-size: var(--fs-3xl);
}
h2 {
  font-size: var(--fs-2xl);
}
h3 {
  font-size: var(--fs-xl);
}

a.link {
  color: var(--brand);
  font-weight: var(--fw-bold);
  text-decoration: underline;
  text-decoration-thickness: 2.5px;
  text-underline-offset: 3px;
}
a.link:hover {
  color: var(--brand-strong);
}

.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--space-4);
}

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

/* Resalte firma: texto blanco sobre bloque de marca inclinado. */
.hl {
  display: inline-block;
  padding: 0 0.25em;
  background: var(--brand);
  color: #fff;
  border-radius: var(--radius-sm);
  transform: skewX(var(--skew));
}

/* ---- Botones: parallelogramos con sombra dura ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.65em 1.5em;
  border: 2px solid transparent;
  border-radius: var(--radius-sm);
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  font-size: var(--fs-sm);
  transform: skewX(var(--skew));
  transition: transform var(--transition), box-shadow var(--transition),
    background-color var(--transition), color var(--transition), border-color var(--transition);
}
.btn:hover {
  transform: skewX(var(--skew)) translate(-2px, -2px);
}
.btn:active {
  transform: skewX(var(--skew)) translate(2px, 2px);
  box-shadow: none;
}

.btn-primary {
  background: var(--brand);
  color: #fff;
  box-shadow: var(--shadow-ink-sm);
}
.btn-primary:hover {
  background: var(--brand-strong);
  box-shadow: var(--shadow-ink);
}

.btn-ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--text);
}
.btn-ghost:hover {
  background: var(--text);
  color: var(--surface);
  box-shadow: var(--shadow-sm);
}

.btn-lg {
  padding: 0.8em 1.9em;
  font-size: var(--fs-base);
}
.btn-sm {
  padding: 0.45em 1em;
  font-size: var(--fs-xs);
}
.btn-block {
  width: 100%;
}

/* ---- Cards: paneles con borde de tinta y sombra de recorte ---- */
.card {
  background: var(--surface);
  border: var(--card-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  padding: var(--space-5);
}

/* Variante "glass" ahora es panel sólido con leve blur (P5 no es vidrio). */
.card-glass {
  background: var(--surface-glass);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
}

/* Panel de papel invertido (menú flotante). Crema en AMBOS temas, tinta navy. */
.panel-paper {
  background: var(--paper);
  color: var(--ink);
  border: 3px solid var(--ink);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

/* ---- Chips: etiquetas inclinadas de marca ---- */
.chip {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 0.28em 0.85em;
  background: var(--brand);
  color: #fff;
  border-radius: var(--radius-pill);
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 900;
  text-transform: uppercase;
  font-size: var(--fs-xs);
  letter-spacing: 0.04em;
  transform: skewX(var(--skew));
  box-shadow: var(--shadow-ink-sm);
}

/* Rotaciones decorativas (solo elementos no-formulario). */
.tilt-l {
  transform: rotate(var(--tilt));
}
.tilt-r {
  transform: rotate(calc(var(--tilt) * -1));
}

/* En móvil, reservar espacio para la barra de navegación inferior. */
@media (max-width: 560px) {
  body:has(.bottom-nav) {
    padding-bottom: calc(var(--bottom-nav-h) + env(safe-area-inset-bottom, 0px));
  }
}