/* ═══════════════ DESIGN TOKENS (ciaobricks Design System) ═══════════════ */
:root {
  /* Azione — unico colore d'azione: CTA, selezione, highlight */
  --c-primary: #FFCC00;
  --c-primary-shadow: #CC8C00;   /* ombra dura 3D sotto i bottoni primari */
  --c-primary-text: #1A1A1A;     /* testo/icona SU giallo → nero */

  /* Supporto */
  --c-success: #33B873;
  --c-success-shadow: #1A6B42;
  --c-select: #217DE8;           /* solo chip selezionati nei form (non in landing) */
  --c-highlight: #FFC733;        /* piccolo highlight ambra */

  /* Testo & chrome — colori "label" di sistema (adattivi) */
  --c-text: #1A1A1A;
  --c-text-secondary: #6B6B6B;

  /* Superfici */
  --c-bg: #F7F5F0;               /* pagina — off-white caldo, mai bianco puro */
  --c-card: #FFFFFF;
  --c-line: rgba(26, 26, 26, 0.08);

  /* Ombre / elevazione */
  --shadow-card: 0 6px 14px rgba(0, 0, 0, .06);
  --shadow-row:  0 3px 8px  rgba(0, 0, 0, .05);

  /* Tipografia */
  --font-sans: 'DM Sans', system-ui, -apple-system, sans-serif;

  /* Raggi (sempre morbidi, ≥10px) */
  --radius-xs: 10px; --radius-s: 12px; --radius-thumb: 14px;
  --radius-m: 16px; --radius-l: 20px; --radius-card: 22px; --radius-xl: 28px;

  /* Spaziature */
  --space-xs: 6px; --space-s: 10px; --space-m: 16px; --space-l: 20px; --space-xl: 28px;

  /* Layout */
  --maxw: 1120px;
}
html.dark {
  --c-text: #FFFFFF;
  --c-text-secondary: #A0A0A0;
  --c-bg: #141414;
  --c-card: #1F1F1F;
  --c-line: rgba(255, 255, 255, 0.11);
  --shadow-card: 0 6px 14px rgba(0, 0, 0, .40);
  --shadow-row:  0 3px 8px  rgba(0, 0, 0, .30);
}

/* ═══════════════ BASE ═══════════════ */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  font-family: var(--font-sans);
  background: var(--c-bg); color: var(--c-text); line-height: 1.6;
  -webkit-font-smoothing: antialiased; transition: background .3s ease, color .3s ease;
}
a { color: inherit; text-decoration: none; }
img, canvas, svg { display: block; }
.container { max-width: var(--maxw); margin: 0 auto; padding-left: 20px; padding-right: 20px; }
section { scroll-margin-top: 80px; }
a:focus-visible, button:focus-visible, summary:focus-visible { outline: 3px solid var(--c-text); outline-offset: 2px; border-radius: 6px; }

/* ═══════════════ TIPOGRAFIA ═══════════════ */
h1, h2, h3 { letter-spacing: -0.02em; line-height: 1.05; }
.kicker { font-size: 13px; font-weight: 600; text-transform: uppercase; letter-spacing: .14em; color: var(--c-text-secondary); }
.h2 { font-size: clamp(28px, 4vw, 42px); font-weight: 700; margin-top: 8px; }
.lead { color: var(--c-text-secondary); }
/* Parola evidenziata nell'hero: marker giallo (giallo = highlight) */
.text-grad {
  background: var(--c-primary); color: var(--c-primary-text);
  padding: 0 .12em; border-radius: 10px;
  -webkit-box-decoration-break: clone; box-decoration-break: clone;
}

/* ═══════════════ STUDS (texture decorativa mattoncini) ═══════════════ */
.studs-bg { position: absolute; inset: 0; pointer-events: none; background-image: radial-gradient(circle at center, color-mix(in srgb, var(--c-text) 8%, transparent) 30%, transparent 32%); background-size: 26px 26px; opacity: .6; }
html.dark .studs-bg { background-image: radial-gradient(circle at center, rgba(255,255,255,.06) 30%, transparent 32%); }

/* ═══════════════ NAV ═══════════════ */
.nav { position: sticky; top: 0; z-index: 50; background: color-mix(in srgb, var(--c-bg) 82%, transparent); backdrop-filter: saturate(180%) blur(12px); border-bottom: 1px solid var(--c-line); }
.nav-inner { height: 64px; display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 700; font-size: 18px; }
.brand-logo { width: 28px; height: 28px; border-radius: 0; display: block; box-shadow: 0 1px 2px rgba(0,0,0,.18); }
.nav-links { display: flex; align-items: center; gap: 26px; font-size: 14px; font-weight: 600; }
.nav-links a { color: var(--c-text-secondary); transition: color .15s ease; }
.nav-links a:hover { color: var(--c-text); }
.nav-right { display: flex; align-items: center; gap: 8px; }
@media (max-width: 860px) { .nav-links { display: none; } }

/* Selettore lingua */
.lang-switch { display: inline-flex; border: 1px solid var(--c-line); border-radius: 999px; overflow: hidden; }
.lang-switch a, .lang-switch button { font-family: inherit; font-weight: 700; font-size: 12px; letter-spacing: .03em; padding: 8px 10px; background: transparent; color: var(--c-text-secondary); border: none; cursor: pointer; text-decoration: none; display: inline-flex; align-items: center; transition: background .15s ease, color .15s ease; }
.lang-switch a:hover, .lang-switch button:hover { color: var(--c-text); }
.lang-switch a[aria-current="page"], .lang-switch button[aria-pressed="true"] { background: var(--c-text); color: var(--c-bg); }

/* ═══════════════ BOTTONI ═══════════════ */
.btn { display: inline-flex; align-items: center; gap: 10px; font-family: inherit; font-weight: 700; font-size: 15px; border: 1px solid transparent; border-radius: 999px; padding: 14px 22px; cursor: pointer; transition: transform .08s ease-out, box-shadow .08s ease-out, background .15s ease; }
/* Primario 3D — giallo, testo nero, ombra dura; sprofonda al click (firma) */
.btn-primary { color: var(--c-primary-text); background: var(--c-primary); border: 0; box-shadow: 0 5px 0 var(--c-primary-shadow); }
.btn-primary:active { transform: translateY(4px); box-shadow: 0 1px 0 var(--c-primary-shadow); }
.btn-ghost { border-color: var(--c-line); background: transparent; color: var(--c-text); }
.btn-ghost:hover { background: var(--c-card); }
.btn-sm { padding: 9px 16px; font-size: 14px; }
.icon-btn { width: 40px; height: 40px; display: grid; place-items: center; border-radius: 999px; border: 1px solid var(--c-line); background: transparent; color: var(--c-text); cursor: pointer; }
.icon-btn:hover { background: var(--c-card); }
/* Badge ufficiale App Store — nero (bianco in dark), come da linee guida Apple */
.appstore-btn { display: inline-flex; align-items: center; gap: 10px; background: #000; color: #fff; border: 1px solid #000; border-radius: 12px; padding: 10px 18px; cursor: pointer; text-decoration: none; transition: opacity .15s ease; }
.appstore-btn:hover { opacity: .85; }
.appstore-btn svg { width: 26px; height: 26px; }
.appstore-btn .as-sub { display: block; font-size: 11px; font-weight: 400; line-height: 1; }
.appstore-btn .as-big { display: block; font-size: 19px; font-weight: 600; line-height: 1.15; letter-spacing: -.01em; }
html.dark .appstore-btn { background: #fff; color: #000; border-color: #fff; }
.appstore-btn--sm { padding: 7px 13px; border-radius: 10px; gap: 7px; }
.appstore-btn--sm svg { width: 18px; height: 18px; }
.appstore-btn--sm .as-big { font-size: 14px; }

/* ═══════════════ HERO ═══════════════ */
.hero { position: relative; overflow: hidden; }
.hero-inner { position: relative; display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; padding: 56px 20px 64px; }
.badge { display: inline-flex; align-items: center; gap: 8px; font-size: 13px; font-weight: 600; background: var(--c-card); border: 1px solid var(--c-line); padding: 6px 14px; border-radius: 999px; box-shadow: var(--shadow-row); }
.badge .dot { width: 8px; height: 8px; border-radius: 999px; background: var(--c-primary); animation: pulse 2s infinite; }
@keyframes pulse { 0%{box-shadow:0 0 0 0 color-mix(in srgb,var(--c-primary) 55%,transparent);} 70%{box-shadow:0 0 0 9px transparent;} 100%{box-shadow:0 0 0 0 transparent;} }
.hero h1 { font-size: clamp(38px, 6vw, 64px); font-weight: 700; margin-top: 20px; }
.hero .lead { font-size: 18px; margin-top: 20px; max-width: 32em; }
.hero-actions { margin-top: 32px; display: flex; flex-wrap: wrap; gap: 12px; }
.hero-note { margin-top: 20px; font-size: 14px; font-weight: 500; color: var(--c-text-secondary); }

.phone-wrap { display: flex; justify-content: center; }
.phone { position: relative; width: 300px; aspect-ratio: 300/620; background: #0d0d0f; border-radius: 46px; padding: 12px; box-shadow: 0 30px 70px rgba(0,0,0,.28), inset 0 0 0 2px rgba(255,255,255,.06); }
.phone-notch { position: absolute; top: 12px; left: 50%; transform: translateX(-50%); width: 118px; height: 26px; background: #0d0d0f; border-radius: 0 0 16px 16px; z-index: 3; }
#mosaic { width: 100%; height: 100%; border-radius: 34px; background: #1b1b1f; cursor: pointer; }
.phone-cap { position: absolute; bottom: 26px; left: 50%; transform: translateX(-50%); font-size: 12px; font-weight: 600; color: rgba(255,255,255,.9); background: rgba(0,0,0,.4); backdrop-filter: blur(4px); padding: 6px 12px; border-radius: 999px; pointer-events: none; }

/* ═══════════════ SEZIONI ═══════════════ */
.section { padding: 80px 0; }
.card { background: var(--c-card); border: 1px solid var(--c-line); border-radius: var(--radius-card); padding: 26px; box-shadow: var(--shadow-card); }
.steps { margin-top: 40px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; list-style: none; }
.step-num { display: grid; place-items: center; width: 44px; height: 44px; border-radius: var(--radius-thumb); font-weight: 700; font-size: 18px; background: var(--c-primary); color: var(--c-primary-text); }
.step h3 { font-size: 20px; font-weight: 700; margin-top: 16px; }
.step p { color: var(--c-text-secondary); margin-top: 6px; }

.alt { background: linear-gradient(to bottom, color-mix(in srgb, var(--c-primary) 7%, var(--c-bg)), var(--c-bg)); }
.features { margin-top: 40px; display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.feature .ficon { width: 44px; height: 44px; display: grid; place-items: center; border-radius: var(--radius-thumb); background: color-mix(in srgb, var(--c-primary) 16%, transparent); color: var(--c-text); }
.feature h3 { font-size: 18px; font-weight: 700; margin-top: 16px; }
.feature p { font-size: 14.5px; color: var(--c-text-secondary); margin-top: 4px; }
.ficon svg { width: 24px; height: 24px; }

.privacy { position: relative; overflow: hidden; border-radius: var(--radius-xl); background: #141414; color: #F4F1EA; padding: 56px 32px; }
.privacy .studs-bg { opacity: .28; background-image: radial-gradient(circle at center, rgba(255,255,255,.06) 30%, transparent 32%); }
.privacy .ficon { width: 48px; height: 48px; display: grid; place-items: center; border-radius: var(--radius-thumb); background: rgba(255,255,255,.1); color: #fff; }
.privacy h2 { font-size: clamp(28px, 4vw, 40px); font-weight: 700; margin-top: 20px; }
.privacy p { color: rgba(244,241,234,.72); font-size: 18px; margin-top: 16px; max-width: 40em; }

.faq { max-width: 720px; margin: 0 auto; }
.faq details { background: var(--c-card); border: 1px solid var(--c-line); border-radius: var(--radius-card); padding: 2px 24px; margin-top: 12px; box-shadow: var(--shadow-row); }
.faq summary { display: flex; align-items: center; justify-content: space-between; gap: 16px; cursor: pointer; list-style: none; padding: 16px 0; font-weight: 700; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary .plus { color: var(--c-text-secondary); font-size: 26px; line-height: 1; transition: transform .2s ease; }
.faq details[open] summary .plus { transform: rotate(45deg); }
.faq details p { color: var(--c-text-secondary); padding-bottom: 20px; }

/* ═══════════════ FOOTER ═══════════════ */
.footer { background: var(--c-card); border-top: 1px solid var(--c-line); }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr; gap: 40px; padding: 56px 0 0; }
.footer h4 { font-size: 13px; font-weight: 600; text-transform: uppercase; letter-spacing: .08em; color: var(--c-text-secondary); }
.footer ul { list-style: none; margin-top: 12px; display: flex; flex-direction: column; gap: 8px; font-size: 14px; }
.footer a { color: var(--c-text-secondary); transition: color .15s ease; }
.footer a:hover { color: var(--c-text); }
.footer .tagline { color: var(--c-text-secondary); font-size: 14px; margin-top: 12px; max-width: 28ch; }
.legal { margin-top: 48px; padding: 28px 0 48px; border-top: 1px solid var(--c-line); display: flex; flex-wrap: wrap; gap: 16px; justify-content: space-between; font-size: 12px; color: var(--c-text-secondary); }
.legal p:first-child { max-width: 60ch; }

/* ═══════════════ DOCUMENTO (Privacy Policy) ═══════════════ */
.doc { max-width: 760px; margin: 0 auto; padding: 48px 0 72px; }
.back-home { display: inline-flex; align-items: center; gap: 6px; font-size: 14px; font-weight: 600; color: var(--c-text-secondary); margin-bottom: 28px; transition: color .15s ease; }
.back-home:hover { color: var(--c-text); }
.doc h1 { font-size: clamp(32px, 5vw, 46px); font-weight: 700; }
.doc-intro { font-size: 18px; color: var(--c-text-secondary); margin-top: 18px; }
.doc-block { margin-top: 34px; }
.doc-block h2 { font-size: 20px; font-weight: 700; }
.doc-block p { color: var(--c-text-secondary); margin-top: 8px; }
.doc-block a { color: var(--c-text); font-weight: 600; text-decoration: underline; text-underline-offset: 2px; }
.doc-meta { margin-top: 44px; padding-top: 24px; border-top: 1px solid var(--c-line); font-size: 14px; font-weight: 500; color: var(--c-text-secondary); }
.doc-legal { margin-top: 16px; font-size: 12px; color: var(--c-text-secondary); max-width: 70ch; line-height: 1.6; }

/* ═══════════════ RESPONSIVE ═══════════════ */
@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; text-align: center; }
  .hero .lead { margin-left: auto; margin-right: auto; }
  .hero-actions { justify-content: center; }
  .steps { grid-template-columns: 1fr; }
  .features { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
}
@media (max-width: 560px) {
  .features { grid-template-columns: 1fr; }
  .appstore-sm { display: none; }
}