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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-body);
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-white);
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 {
  font-family: var(--font-heading);
  color: var(--color-black);
  line-height: 1.1;
}

h1 { font-size: var(--text-h1); font-weight: 800; letter-spacing: -0.01em; }
h2 { font-size: var(--text-h2); font-weight: 700; }
h3 { font-size: var(--text-h3); font-weight: 600; }

p { max-width: 62ch; }

a {
  color: inherit;
  text-decoration: none;
}

img { max-width: 100%; display: block; }

.container {
  max-width: var(--content-max);
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 4vw, 2.5rem);
}

.section {
  padding-block: var(--space-section);
}

.section--dark {
  position: relative;
  background: var(--color-black);
  color: rgba(255, 255, 255, 0.85);
  isolation: isolate;
}
.section--dark h1, .section--dark h2, .section--dark h3 { color: var(--color-white); }
/* Grana sottile — evita lo sfondo nero piatto, dà atmosfera senza pesare */
.section--dark::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  opacity: 0.5;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.4'/%3E%3C/svg%3E");
  background-size: 120px 120px;
}
.section--dark::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: radial-gradient(ellipse 60% 50% at 50% 0%, rgba(46,255,192,0.08), transparent 70%);
}

/* ── SCROLL REVEAL ────────────────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 700ms var(--ease-out-expo), transform 700ms var(--ease-out-expo);
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.section--warm {
  background: var(--color-surface-warm);
}

.section--pale {
  background: var(--color-primary-pale);
}

.eyebrow {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-primary-dark);
  display: inline-block;
  margin-bottom: var(--space-xs);
}
.section--dark .eyebrow { color: var(--color-primary); }

/* Bottoni */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.95rem;
  padding: 0.9rem 1.75rem;
  border-radius: var(--radius-sm);
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform var(--duration-fast) var(--ease-out-expo),
              background-color var(--duration-normal) var(--ease-out-expo),
              border-color var(--duration-normal) var(--ease-out-expo);
}
.btn:hover { transform: translateY(-2px); }
.btn:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 3px;
}

.btn--primary {
  background: var(--color-primary);
  color: var(--color-black);
}
.btn--primary:hover { background: var(--color-primary-dark); color: var(--color-white); }

.btn--ghost {
  background: transparent;
  border-color: currentColor;
  color: inherit;
}
.btn--ghost:hover { border-color: var(--color-primary); color: var(--color-primary-dark); }
.section--dark .btn--ghost:hover { color: var(--color-primary); }

.btn--text {
  padding: 0;
  border: none;
  font-weight: 700;
  position: relative;
}
.btn--text::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -3px;
  height: 2px;
  background: currentColor;
  transform: scaleX(0.3);
  transform-origin: left;
  transition: transform var(--duration-normal) var(--ease-out-expo);
}
.btn--text:hover::after { transform: scaleX(1); }

/* Placeholder immagine — segna esplicitamente cosa manca, non finge una foto vera */
.img-placeholder {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  align-items: center;
  justify-content: center;
  text-align: center;
  background:
    repeating-linear-gradient(45deg, rgba(46,255,192,0.05) 0 2px, transparent 2px 14px),
    linear-gradient(135deg, var(--color-black) 0%, #1a2a24 100%);
  color: rgba(255,255,255,0.6);
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  padding: var(--space-md);
  min-height: 220px;
  border: 1px solid rgba(46,255,192,0.25);
}
.img-placeholder::before {
  content: "📍";
  font-size: 1.6rem;
  filter: grayscale(1) brightness(1.6);
  opacity: 0.7;
}

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--color-primary);
  color: var(--color-black);
  padding: 0.75rem 1.25rem;
  z-index: 100;
  font-weight: 700;
}
.skip-link:focus {
  left: var(--space-sm);
  top: var(--space-sm);
}

@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;
  }
}