/* ==========================================================================
   TRACCIATO STUDIO OS - BASE & RESET CSS
   Precisione Svizzera, Ergonomia Tipografica e Zero Zavorre
   ========================================================================== */

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

html {
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  color-scheme: dark;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-base);
  color: var(--text-body);
  min-height: 100vh;
  overflow-x: hidden;
}

/* Tipografia Gerarchica */
h1, h2, h3, h4, h5, h6 {
  color: var(--text-primary);
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 1.2;
}

h1 { font-size: var(--text-2xl); font-weight: 700; }
h2 { font-size: var(--text-xl); }
h3 { font-size: var(--text-lg); font-weight: 600; }
h4 { font-size: var(--text-md); font-weight: 600; }

p {
  color: var(--text-body);
  font-size: var(--text-base);
}

small {
  font-size: var(--text-xs);
  color: var(--text-muted);
}

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

a:hover {
  color: var(--blue-hover);
}

/* Numeri e Timer Monospazio */
.mono-nums {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
}

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

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

::-webkit-scrollbar-thumb {
  background: var(--border-strong);
  border-radius: var(--radius-pill);
}

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

/* Utility di allineamento e display */
.flex { display: flex; }
.flex-col { display: flex; flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.gap-1 { gap: 0.25rem; }
.gap-2 { gap: 0.5rem; }
.gap-3 { gap: 0.75rem; }
.gap-4 { gap: 1rem; }
.gap-6 { gap: 1.5rem; }

/* Micro-animazioni */
@keyframes pulse-subtle {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(0.92); }
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

.animate-fade-in {
  animation: fadeIn var(--transition-normal) forwards;
}

.pulse-dot {
  animation: pulse-subtle 2s infinite ease-in-out;
}