/* Yobbisi — landing + privacy styles
 * Brand palette estratta da yobbisi_app/lib/ui/theme.dart
 *
 * Versione: 1.0 — 2026-05-16
 */

:root {
  --primary: #3F8F73;
  --primary-deep: #27664F;
  --primary-soft: #DCE9DF;
  --primary-wash: #EDF3EE;
  --bg: #F5F4EF;
  --surface: #FFFFFF;
  --surface-alt: #EFEDE5;
  --text-primary: #1A1F1A;
  --text-secondary: #8E8A7F;
  --border: rgba(26, 31, 26, 0.08);

  --container-max: 960px;
  --container-narrow: 720px;

  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2rem;
  --space-5: 3rem;
  --space-6: 4rem;
  --space-8: 6rem;

  --radius: 12px;
  --radius-sm: 8px;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-primary);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a { color: var(--primary-deep); text-decoration: none; }
a:hover { text-decoration: underline; }

img, svg { max-width: 100%; height: auto; display: block; }

/* ---- Layout primitives -------------------------------------------------- */

.container { max-width: var(--container-max); margin: 0 auto; padding: 0 var(--space-3); }
.container--narrow { max-width: var(--container-narrow); }

/* ---- Header ------------------------------------------------------------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(245, 244, 239, 0.92);
  backdrop-filter: saturate(180%) blur(10px);
  -webkit-backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid var(--border);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-2) 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--text-primary);
  text-decoration: none;
}
.brand:hover { text-decoration: none; }

.brand__mark {
  width: 28px;
  height: 28px;
  background: var(--primary);
  border-radius: 8px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 800;
  font-size: 0.9rem;
}

.site-nav {
  display: flex;
  gap: var(--space-3);
  align-items: center;
}

.site-nav a { color: var(--text-secondary); font-weight: 500; font-size: 0.95rem; }
.site-nav a:hover { color: var(--text-primary); text-decoration: none; }

/* ---- Hero --------------------------------------------------------------- */

.hero {
  padding: var(--space-8) 0 var(--space-6);
  text-align: center;
}

.hero__eyebrow {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  background: var(--primary-wash);
  color: var(--primary-deep);
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: var(--space-2);
  border: 1px solid var(--primary-soft);
}

.hero__title {
  font-size: clamp(2.2rem, 5vw, 3.4rem);
  line-height: 1.1;
  margin: 0 0 var(--space-2);
  font-weight: 700;
  letter-spacing: -0.02em;
}

.hero__title em {
  font-style: normal;
  color: var(--primary-deep);
}

.hero__subtitle {
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto var(--space-4);
}

.cta-row {
  display: flex;
  gap: var(--space-2);
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 1.5rem;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  border: 1px solid transparent;
  transition: transform 0.1s ease, background 0.2s ease, border-color 0.2s ease;
  cursor: pointer;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

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

.btn--ghost { background: transparent; color: var(--text-primary); border-color: var(--border); }
.btn--ghost:hover { background: var(--surface-alt); border-color: var(--text-secondary); }

/* ---- Features grid ------------------------------------------------------ */

.features { padding: var(--space-6) 0; }

.features__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--space-3);
}

.feature {
  background: var(--surface);
  padding: var(--space-3);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}

.feature__icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--primary-wash);
  color: var(--primary-deep);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: var(--space-2);
}

.feature__title {
  font-size: 1.15rem;
  margin: 0 0 0.5rem;
  font-weight: 700;
}

.feature__body { color: var(--text-secondary); margin: 0; font-size: 0.95rem; }

/* ---- Sezione "Per chi è" ----------------------------------------------- */

.section { padding: var(--space-6) 0; }
.section--alt { background: var(--surface); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.section__title {
  font-size: clamp(1.6rem, 3vw, 2rem);
  text-align: center;
  margin: 0 0 var(--space-4);
  font-weight: 700;
  letter-spacing: -0.01em;
}

.section__lead {
  text-align: center;
  color: var(--text-secondary);
  max-width: 640px;
  margin: 0 auto var(--space-4);
  font-size: 1.05rem;
}

/* ---- Pilot callout ------------------------------------------------------ */

.callout {
  background: var(--primary-deep);
  color: white;
  border-radius: var(--radius);
  padding: var(--space-4);
  text-align: center;
}
.callout h3 { font-size: 1.5rem; margin: 0 0 var(--space-1); font-weight: 700; }
.callout p { color: rgba(255, 255, 255, 0.85); margin: 0 0 var(--space-2); }
.callout .btn { background: white; color: var(--primary-deep); }
.callout .btn:hover { background: var(--primary-wash); }

/* ---- Footer ------------------------------------------------------------- */

.site-footer {
  background: var(--surface-alt);
  border-top: 1px solid var(--border);
  padding: var(--space-4) 0 var(--space-3);
  margin-top: var(--space-6);
}

.site-footer__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-2);
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.site-footer a { color: var(--text-primary); font-weight: 500; }
.site-footer__links { display: flex; gap: var(--space-3); flex-wrap: wrap; }

/* ---- Privacy page (lunghi testi legali) -------------------------------- */

.legal {
  background: var(--surface);
  padding: var(--space-5) 0 var(--space-6);
}

.legal h1 {
  font-size: clamp(2rem, 4vw, 2.5rem);
  margin: 0 0 0.5rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}
.legal .legal__subtitle { color: var(--text-secondary); font-size: 1.05rem; margin: 0 0 0.5rem; }
.legal .legal__meta { color: var(--text-secondary); font-size: 0.9rem; margin: 0 0 var(--space-4); }

.legal nav.toc {
  background: var(--surface-alt);
  border-radius: var(--radius);
  padding: var(--space-2) var(--space-3);
  margin: 0 0 var(--space-5);
}
.legal nav.toc h2 { margin: 0 0 0.5rem; font-size: 1.05rem; font-weight: 600; }
.legal nav.toc ol { margin: 0; padding-left: 1.25rem; }
.legal nav.toc li { padding: 0.15rem 0; }

.legal section { margin-bottom: var(--space-4); scroll-margin-top: 1rem; }
.legal section h2 {
  font-size: 1.35rem;
  margin: 0 0 0.75rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}
.legal section p { margin: 0 0 0.75rem; line-height: 1.7; }
.legal section ul { padding-left: 1.25rem; margin: 0 0 0.75rem; }
.legal section ul li { margin-bottom: 0.5rem; line-height: 1.7; }
.legal section em { color: var(--text-secondary); }

.legal hr {
  border: 0;
  border-top: 1px solid var(--border);
  margin: var(--space-4) 0;
}

.legal__footer { text-align: center; color: var(--text-secondary); padding: var(--space-3) 0; }
.legal__footer small { display: block; margin-top: 0.25rem; }

/* ---- Responsive --------------------------------------------------------- */

@media (max-width: 540px) {
  .site-nav a:not(.btn) { display: none; }
  .hero { padding: var(--space-5) 0 var(--space-4); }
}

/* ---- Accessibility ------------------------------------------------------ */

:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; border-radius: 2px; }

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}