/* ==========================================================================
   Base — Tipografia, layout, grid di sfondo
   ========================================================================== */

body {
  font-family: var(--font-body);
  font-size: 16px;
  color: var(--text-primary);
  background-color: var(--bg-base);
  /* Griglia sottile di sfondo */
  background-image:
    linear-gradient(var(--border-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--border-grid) 1px, transparent 1px);
  background-size: 64px 64px;
  background-position: -1px -1px;
  background-attachment: fixed;
  overflow-x: hidden;
}

/* Container generico */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-5);
}

.container-narrow {
  max-width: var(--container-narrow);
}

/* Sezioni */
section {
  padding: var(--space-9) 0;
}

@media (max-width: 768px) {
  section {
    padding: var(--space-8) 0;
  }
}

/* Tipografia display */
.display-1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(40px, 6vw, 72px);
  line-height: 1.05;
  letter-spacing: -0.02em;
}

.display-2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(32px, 4.5vw, 52px);
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.display-3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(24px, 3vw, 36px);
  line-height: 1.15;
  letter-spacing: -0.01em;
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
}

.lead {
  font-size: clamp(16px, 1.5vw, 19px);
  line-height: 1.6;
  color: var(--text-secondary);
}

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

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

.mono {
  font-family: var(--font-mono);
}

/* Allineamenti */
.text-center { text-align: center; }
.mx-auto { margin-left: auto; margin-right: auto; }

/* Spaziature utility */
.mt-4 { margin-top: var(--space-5); }
.mt-6 { margin-top: var(--space-6); }
.mt-8 { margin-top: var(--space-7); }

/* Section header */
.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto var(--space-8);
}

.section-header .eyebrow {
  display: inline-block;
  margin-bottom: var(--space-3);
}

.section-header h2 {
  margin-bottom: var(--space-4);
}

/* Grid utility */
.grid {
  display: grid;
  gap: var(--space-5);
}

.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

.grid-2 {
  grid-template-columns: repeat(2, 1fr);
}

.grid-4 {
  grid-template-columns: repeat(4, 1fr);
}

@media (max-width: 900px) {
  .grid-3,
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 600px) {
  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }
}

/* Reveal animations */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal[data-delay="1"] { transition-delay: 100ms; }
.reveal[data-delay="2"] { transition-delay: 200ms; }
.reveal[data-delay="3"] { transition-delay: 300ms; }
.reveal[data-delay="4"] { transition-delay: 400ms; }

/* Riduzione movimento */
@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;
  }
  .reveal {
    opacity: 1;
    transform: none;
  }
}