/* ============================================
   BASE.CSS — Layout, tipografia, sfondo app
   Somto — dark theme unico, feel nativo
   ============================================ */

/* ===== View Transitions cross-document (feel SPA) ===== */
@view-transition { navigation: auto; }

*, *::before, *::after {
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}

html {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  color: var(--text-primary);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  margin: 0;
  min-height: 100vh;
  min-height: 100dvh;
  background-color: var(--bg);
  color: var(--text-primary);
  overflow-x: hidden;
}

/* Sfondo schermo: gradiente + cerchi sfocati decorativi (TwoWatchBackground) */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(420px 420px at 88% -6%,  rgba(233, 30, 99, 0.20), transparent 68%),
    radial-gradient(380px 380px at 2% 9%,    rgba(0, 217, 255, 0.11), transparent 70%),
    radial-gradient(480px 480px at 6% 98%,   rgba(156, 39, 176, 0.16), transparent 70%),
    var(--screen-gradient);
}

a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; }
img { max-width: 100%; display: block; }

input, textarea, select { font: inherit; }

.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.page {
  padding-top: calc(var(--safe-top) + 1rem);
  padding-bottom: calc(var(--tabbar-height) + 1.25rem);
  min-height: 100vh;
  min-height: 100dvh;
  view-transition-name: tw-content;
}

@keyframes pageEnter {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Fallback per browser senza View Transitions */
@supports not (view-transition-name: none) {
  .page { animation: pageEnter 0.4s cubic-bezier(0.16, 1, 0.3, 1) both; }
}

::view-transition-old(tw-content) {
  animation: vtFadeOut 0.18s cubic-bezier(0.4, 0, 1, 1) both;
}
::view-transition-new(tw-content) {
  animation: vtFadeIn 0.28s cubic-bezier(0.16, 1, 0.3, 1) both;
}
@keyframes vtFadeOut { to { opacity: 0; transform: translateY(-6px); } }
@keyframes vtFadeIn  { from { opacity: 0; transform: translateY(10px); } }

@media (prefers-reduced-motion: reduce) {
  ::view-transition-old(tw-content),
  ::view-transition-new(tw-content) { animation: none; }
  .page { animation: none; }
}

.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.page-header h1 {
  margin: 0;
  font-family: var(--font-display);
  font-size: var(--h1);
  font-weight: var(--weight-black);
  letter-spacing: var(--tracking-tight);
  line-height: var(--leading-tight);
}

h1 {
  font-family: var(--font-display);
  font-size: var(--h1); font-weight: var(--weight-black);
  letter-spacing: var(--tracking-tight); line-height: var(--leading-tight);
  margin: 0 0 var(--space-sm);
}
h2 {
  font-family: var(--font-display);
  font-size: var(--h2); font-weight: var(--weight-bold);
  letter-spacing: -0.015em; line-height: 1.2; margin: 0 0 var(--space-sm);
}
h3 {
  font-size: var(--h3); font-weight: var(--weight-bold);
  line-height: 1.25; margin: 0 0 var(--space-xs);
}

.hint {
  color: var(--text-muted);
  font-size: var(--text-sm);
  line-height: 1.45;
}

.section-title {
  font-family: var(--font-display);
  font-size: var(--text-md);
  font-weight: var(--weight-bold);
  letter-spacing: -0.01em;
  color: var(--text-primary);
  margin-bottom: var(--space-sm);
}

::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(255, 255, 255, 0.10); border-radius: var(--radius-full); }
::-webkit-scrollbar-thumb:hover { background: rgba(255, 255, 255, 0.20); }
::selection { background: rgba(233, 30, 99, 0.25); color: var(--text-primary); }

/* ===== Feedback press globale ===== */
button:active,
[role="button"]:active {
  opacity: 0.86;
}
a:active:not(.tab-link):not(.fab):not(.btn):not(.tw-tab) {
  opacity: 0.78;
}
.btn:active {
  transform: scale(0.97);
}
@media (prefers-reduced-motion: reduce) {
  .btn:active { transform: none; }
}

/* ===== iOS Safari: niente auto-zoom al focus dei campi =====
   Safari su iOS zooma quando un input/textarea/select messo a fuoco ha
   font-size < 16px. Forziamo 16px su mobile per tutti i campi di testo
   così il focus non scatena lo zoom che sbilancia il feel da app.
   Solo mobile → il look desktop resta invariato. NON reintrodurre
   maximum-scale (rompe pinch-zoom / accessibilità). */
@media (max-width: 640px) {
  input:not([type="checkbox"]):not([type="radio"]):not([type="range"]):not([type="color"]):not([type="file"]),
  textarea,
  select {
    font-size: 16px !important;
  }
}