/* ===== Design tokens (da DESIGN.md — Cal.com) ===== */
:root {
  /* colors */
  --primary: #111111;
  --primary-active: #242424;
  --primary-disabled: #e5e7eb;
  --ink: #111111;
  --body: #374151;
  --muted: #6b7280;
  --muted-soft: #898989;
  --hairline: #e5e7eb;
  --hairline-soft: #f3f4f6;
  --canvas: #ffffff;
  --surface-soft: #f8f9fa;
  --surface-card: #f5f5f5;
  --surface-strong: #e5e7eb;
  --surface-dark: #101010;
  --surface-dark-elevated: #1a1a1a;
  --on-primary: #ffffff;
  --on-dark: #ffffff;
  --on-dark-soft: #a1a1aa;
  --brand-accent: #3b82f6;
  --badge-orange: #fb923c;
  --badge-pink: #ec4899;
  --badge-violet: #8b5cf6;
  --badge-emerald: #34d399;

  /* radius */
  --r-sm: 6px;
  --r-md: 8px;
  --r-lg: 12px;
  --r-xl: 16px;
  --r-pill: 9999px;

  /* spacing */
  --s-xs: 8px;
  --s-sm: 12px;
  --s-md: 16px;
  --s-lg: 24px;
  --s-xl: 32px;
  --s-xxl: 48px;
  --s-section: 96px;

  --font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  /* Cal Sans substitute: Inter 600 + negative tracking */
  --display: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  color: var(--body);
  background: var(--canvas);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding-left: var(--s-lg);
  padding-right: var(--s-lg);
}

/* ===== Display typography (Cal Sans look) ===== */
.display-xl, .display-lg, .display-md, .display-sm {
  font-family: var(--display);
  color: var(--ink);
  font-weight: 600;
}
.display-xl { font-size: clamp(40px, 6vw, 64px); line-height: 1.05; letter-spacing: -0.04em; }
.display-lg { font-size: clamp(32px, 4.5vw, 48px); line-height: 1.1; letter-spacing: -0.035em; }
.display-md { font-size: clamp(28px, 3.5vw, 36px); line-height: 1.15; letter-spacing: -0.03em; }
.display-sm { font-size: 28px; line-height: 1.2; letter-spacing: -0.02em; }

.title-lg { font-size: 22px; font-weight: 600; line-height: 1.3; letter-spacing: -0.3px; color: var(--ink); }
.title-md { font-size: 18px; font-weight: 600; line-height: 1.4; color: var(--ink); }

.lead { font-size: 18px; color: var(--muted); }

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font);
  font-size: 14px;
  font-weight: 600;
  line-height: 1;
  height: 40px;
  padding: 0 20px;
  border-radius: var(--r-md);
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: background .15s, color .15s, border-color .15s;
  white-space: nowrap;
}
.btn-lg { height: 48px; padding: 0 26px; font-size: 15px; }
.btn-block { width: 100%; }

.btn-primary { background: var(--primary); color: var(--on-primary); }
.btn-primary:hover { background: var(--primary-active); }

.btn-secondary { background: var(--canvas); color: var(--ink); border-color: var(--hairline); }
.btn-secondary:hover { background: var(--surface-soft); }

.btn-invert { background: var(--canvas); color: var(--ink); }
.btn-invert:hover { background: var(--surface-card); }

.btn-text { background: transparent; color: var(--ink); padding: 0 10px; }
.btn-text:hover { color: var(--muted); }

/* ===== Badge ===== */
.badge {
  display: inline-block;
  background: var(--surface-card);
  color: var(--ink);
  font-size: 13px;
  font-weight: 500;
  border-radius: var(--r-pill);
  padding: 4px 12px;
  margin-bottom: var(--s-md);
}
.badge-light { background: rgba(255,255,255,0.15); color: var(--on-dark); }

/* ===== Nav ===== */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  height: 64px;
  background: rgba(255,255,255,0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--hairline-soft);
}
.nav-inner { height: 64px; display: flex; align-items: center; justify-content: space-between; }
.brand {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--display);
  font-weight: 600; font-size: 20px; letter-spacing: -0.03em;
  color: var(--ink); text-decoration: none;
}
.brand-dot { width: 12px; height: 12px; border-radius: 50%; background: var(--primary); display: inline-block; }
.brand.on-dark { color: var(--on-dark); }
.brand.on-dark .brand-dot { background: var(--on-dark); }

.nav-links { display: flex; gap: 28px; }
.nav-links a { font-size: 14px; font-weight: 500; color: var(--body); text-decoration: none; }
.nav-links a:hover { color: var(--ink); }
.nav-cta { display: flex; align-items: center; gap: 8px; }

/* ===== Hero ===== */
.hero { padding: 72px 0; }
.hero-grid {
  display: grid;
  grid-template-columns: 7fr 5fr;
  gap: var(--s-xxl);
  align-items: center;
}
.hero-copy .badge { margin-bottom: var(--s-md); }
.hero-copy .lead { margin: var(--s-md) 0 var(--s-lg); max-width: 30em; }
.hero-actions { display: flex; gap: var(--s-sm); flex-wrap: wrap; }
.hero-note { margin-top: var(--s-md); font-size: 13px; color: var(--muted-soft); }

/* App mockup card */
.mockup-card {
  background: var(--canvas);
  border: 1px solid var(--hairline);
  border-radius: var(--r-xl);
  padding: var(--s-lg);
  box-shadow: 0 4px 24px rgba(0,0,0,0.06);
}
.mockup-head { display: flex; align-items: center; gap: 12px; margin-bottom: var(--s-lg); }
.mockup-name { font-weight: 600; color: var(--ink); font-size: 15px; }
.mockup-sub { font-size: 13px; color: var(--muted); }
.mockup-body { display: grid; grid-template-columns: 1.3fr 1fr; gap: var(--s-md); }
.cal-month { font-weight: 600; color: var(--ink); font-size: 13px; margin-bottom: 10px; }
.cal-grid { display: grid; grid-template-columns: repeat(7, 1fr); gap: 4px; }
.cal-d {
  font-size: 12px; text-align: center; padding: 6px 0;
  border-radius: var(--r-sm); color: var(--body);
}
.cal-d.muted { color: var(--muted-soft); font-weight: 500; }
.cal-d.sel { background: var(--primary); color: var(--on-primary); font-weight: 600; }
.slots { display: flex; flex-direction: column; gap: 8px; }
.slot {
  border: 1px solid var(--hairline);
  border-radius: var(--r-md);
  padding: 8px; text-align: center; font-size: 13px; font-weight: 500;
  color: var(--ink); cursor: pointer;
}
.slot.active { border-color: var(--primary); background: var(--surface-soft); }
.mockup-confirm { width: 100%; margin-top: var(--s-md); }

/* ===== Trust ===== */
.trust { text-align: center; padding: var(--s-xl) 0; }
.trust-text { font-size: 13px; color: var(--muted-soft); margin-bottom: var(--s-md); }
.trust-logos { display: flex; flex-wrap: wrap; justify-content: center; gap: var(--s-xl); color: var(--muted); font-weight: 600; }

/* ===== Sections ===== */
.section { padding: var(--s-section) 0; }
.section-head { max-width: 640px; margin: 0 auto var(--s-xxl); text-align: center; }
.section-head .lead { margin-top: var(--s-sm); }

/* Grids */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--s-lg); }
.grid-pricing { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--s-lg); }

/* Feature card */
.feature-card {
  background: var(--surface-card);
  border-radius: var(--r-lg);
  padding: var(--s-xl);
}
.feature-ico {
  width: 44px; height: 44px; display: flex; align-items: center; justify-content: center;
  background: var(--canvas); border-radius: var(--r-md); font-size: 22px; margin-bottom: var(--s-md);
}
.feature-card h3 { margin-bottom: var(--s-xs); }
.feature-card p { color: var(--body); font-size: 15px; }

/* Product band */
.product-band {
  display: grid; grid-template-columns: 1fr 1fr; gap: var(--s-xxl);
  align-items: center;
  background: var(--surface-card);
  border-radius: var(--r-xl);
  padding: var(--s-xxl);
}
.product-copy .lead { margin: var(--s-sm) 0 var(--s-lg); }
.checklist { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.checklist li { position: relative; padding-left: 26px; color: var(--body); font-size: 15px; }
.checklist li::before {
  content: "✓"; position: absolute; left: 0; top: 0;
  color: var(--badge-emerald); font-weight: 700;
}
.product-ui {
  background: var(--canvas); border: 1px solid var(--hairline);
  border-radius: var(--r-lg); padding: var(--s-lg);
  display: flex; flex-direction: column; gap: 10px;
}
.flow-row { display: flex; align-items: center; justify-content: center; gap: 10px; }
.flow-step {
  background: var(--surface-soft); border: 1px solid var(--hairline);
  border-radius: var(--r-md); padding: 10px 14px; font-size: 13px; font-weight: 500; color: var(--ink);
}
.flow-step.done { background: var(--primary); color: var(--on-primary); border-color: var(--primary); }
.flow-arrow { color: var(--muted-soft); font-weight: 700; }
.flow-arrow.vert { font-size: 18px; }

/* Testimonials */
.testimonial { background: var(--surface-card); border-radius: var(--r-lg); padding: var(--s-lg); }
.t-head { display: flex; align-items: center; gap: 12px; margin-bottom: var(--s-sm); }
.t-name { font-weight: 600; color: var(--ink); font-size: 14px; }
.t-role { font-size: 13px; color: var(--muted); }
.testimonial p:last-child { color: var(--body); font-size: 15px; }
.stars { color: var(--badge-orange); font-size: 14px; margin-bottom: var(--s-xs); letter-spacing: 2px; }

/* Avatar */
.avatar {
  width: 40px; height: 40px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-weight: 600; font-size: 16px; color: var(--ink);
  background: var(--surface-strong); flex-shrink: 0;
}
.avatar.pink { background: var(--badge-pink); color: #fff; }
.avatar.violet { background: var(--badge-violet); color: #fff; }
.avatar.emerald { background: var(--badge-emerald); color: #fff; }

/* Pricing */
.price-card {
  background: var(--canvas);
  border: 1px solid var(--hairline);
  border-radius: var(--r-lg);
  padding: var(--s-xl);
  display: flex; flex-direction: column;
  box-shadow: 0 1px 2px rgba(0,0,0,0.04);
}
.price-card.featured { background: var(--surface-dark); border-color: var(--surface-dark); color: var(--on-dark); }
.price-card.featured .title-lg,
.price-card.featured .price { color: var(--on-dark); }
.price-card.featured .checklist li { color: var(--on-dark-soft); }
.price-card .price { font-family: var(--display); font-size: 28px; font-weight: 600; letter-spacing: -0.02em; color: var(--ink); margin: 6px 0 var(--s-md); }
.price-card .price span { font-size: 14px; font-weight: 400; color: var(--muted); }
.price-card .checklist { margin-bottom: var(--s-lg); flex-grow: 1; }
.price-card.featured .badge-light { margin-bottom: var(--s-sm); }

/* CTA band */
.cta-band {
  background: var(--surface-card);
  border-radius: var(--r-lg);
  padding: var(--s-xxl);
  text-align: center;
}
.cta-band .lead { margin: var(--s-sm) 0 var(--s-lg); }

/* ===== Footer ===== */
.footer { background: var(--surface-dark); color: var(--on-dark-soft); padding: 64px 0; }
.footer-inner { display: grid; grid-template-columns: 1fr 2fr; gap: var(--s-xxl); }
.footer-brand p { margin-top: var(--s-md); font-size: 14px; line-height: 1.6; }
.footer-cols { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--s-lg); }
.footer-cols h4 { color: var(--on-dark); font-size: 14px; margin-bottom: var(--s-sm); }
.footer-cols a { display: block; color: var(--on-dark-soft); text-decoration: none; font-size: 14px; padding: 4px 0; }
.footer-cols a:hover { color: var(--on-dark); }

/* ===== Pagina contatti ===== */
.contatti-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--s-lg);
  max-width: 720px;
  margin: 0 auto;
}
.contact-card {
  background: var(--surface-card);
  border: 1px solid var(--hairline-soft);
  border-radius: var(--r-lg);
  padding: var(--s-xl);
  text-align: center;
  cursor: pointer;
  font: inherit;
  color: inherit;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  transition: box-shadow .15s, transform .15s;
}
.contact-card:hover { box-shadow: 0 4px 16px rgba(0,0,0,0.08); transform: translateY(-3px); }
.c-role { color: var(--muted); font-size: 14px; }
.avatar.lg { width: 64px; height: 64px; font-size: 26px; margin: 0 auto var(--s-sm); }

.modal {
  display: none;
  position: fixed; inset: 0; z-index: 100;
  background: rgba(16,16,16,0.5);
  backdrop-filter: blur(4px);
  align-items: center; justify-content: center; padding: var(--s-lg);
}
.modal.aperta { display: flex; }
.modal-box {
  position: relative;
  background: var(--canvas);
  border-radius: var(--r-xl);
  padding: var(--s-xl);
  max-width: 380px; width: 100%;
  text-align: center;
  box-shadow: 0 20px 50px rgba(0,0,0,0.25);
}
.modal-close {
  position: absolute; top: 12px; right: 16px;
  background: none; border: none; font-size: 24px; line-height: 1;
  color: var(--muted); cursor: pointer;
}
.modal-close:hover { color: var(--ink); }
.modal-list { list-style: none; margin-top: var(--s-md); text-align: left; display: inline-block; }
.modal-list li { margin: 8px 0; color: var(--body); font-size: 15px; }
.modal-list a { color: var(--ink); font-weight: 500; text-decoration: none; }
.modal-list a:hover { text-decoration: underline; }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .grid-pricing { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; }
  .product-band { grid-template-columns: 1fr; padding: var(--s-xl); }
  .grid-3 { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .nav-links { display: none; }
  .section { padding: 64px 0; }
  .grid-3 { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; }
  .footer-cols { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 520px) {
  .grid-pricing { grid-template-columns: 1fr; }
  .footer-cols { grid-template-columns: 1fr; }
}