/* ============================================================
   Algoritmo Umano ETS — stylesheet
   Palette e tipografia allineate al logo ufficiale: crema, nero
   inchiostro e oro/bronzo, con serif editoriale per i titoli.
   ============================================================ */

:root {
  --bg: #f8f4ea;
  --bg-soft: #f0e8d6;
  --surface: #ffffff;
  --surface-border: rgba(23, 19, 13, 0.12);
  --text: #1a1613;
  --text-dim: #6e6354;
  --accent: #ad8238;
  --accent-dark: #8a6726;
  --accent-soft: #eadfc2;
  --accent-contrast: #1a1613;
  --ink: #15120e;

  --font-display: "Playfair Display", Georgia, "Times New Roman", serif;
  --font-body: "Inter", "Helvetica Neue", Arial, sans-serif;

  --radius-pill: 999px;
  --radius-md: 18px;
  --radius-lg: 24px;

  --shadow-soft: 0 10px 30px rgba(23, 19, 13, 0.07);

  --max-width: 1240px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.08;
  margin: 0;
  letter-spacing: -0.01em;
}

p { margin: 0 0 1em; color: var(--text-dim); }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

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

/* ---------- Layout helpers ---------- */
.section { padding: clamp(64px, 10vw, 140px) 24px; }
.section-dark {
  background: var(--bg-soft);
  border-top: 1px solid var(--surface-border);
  border-bottom: 1px solid var(--surface-border);
}
.section-inner { max-width: var(--max-width); margin: 0 auto; }

.section-head { max-width: 680px; margin-bottom: clamp(36px, 6vw, 64px); }
.section-title { font-size: clamp(2rem, 4.2vw, 3.2rem); }
.section-lead { font-size: 1.1rem; margin-top: 16px; }

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--accent-dark);
  margin: 0 0 14px;
}
/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 26px;
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: var(--radius-pill);
  transition: transform 0.2s ease, background 0.2s ease, color 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-2px); }
.btn-pill { border: 1px solid transparent; }
.btn-accent {
  background: #ffffff;
  color: var(--ink);
  border-color: var(--surface-border);
  box-shadow: var(--shadow-soft);
}
.btn-accent:hover { background: var(--accent-soft); color: var(--ink); border-color: var(--accent); }
.btn-ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--surface-border);
}
.btn-ghost:hover { border-color: var(--accent); color: var(--accent-dark); }

/* ---------- Header ---------- */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 18px 24px;
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 10px 14px 10px 18px;
  background: rgba(248, 244, 234, 0.82);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-pill);
  backdrop-filter: blur(16px);
  box-shadow: var(--shadow-soft);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
}

.brand-icon {
  width: 46px;
  height: auto;
}

.brand-name {
  font-weight: 700;
  font-size: 0.86rem;
  line-height: 1.15;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text);
  display: none;
}
.brand-name-accent { color: var(--accent-dark); }

.main-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  background: rgba(23, 19, 13, 0.05);
  border-radius: var(--radius-pill);
  padding: 4px;
}
.main-nav a {
  padding: 9px 16px;
  border-radius: var(--radius-pill);
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-dim);
  transition: background 0.2s ease, color 0.2s ease;
}
.main-nav a:hover { color: var(--text); background: rgba(23, 19, 13, 0.07); }

.header-actions { display: flex; align-items: center; gap: 10px; }
.header-actions .btn { padding: 11px 20px; font-size: 0.88rem; }

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(23, 19, 13, 0.06);
  border: none;
  cursor: pointer;
}
.nav-toggle span {
  display: block;
  width: 16px;
  height: 2px;
  margin: 0 auto;
  background: var(--text);
  transition: transform 0.25s ease, opacity 0.25s ease;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 140px 24px 80px;
  overflow: hidden;
}

.hero-bg { position: absolute; inset: 0; z-index: 0; }
.hero-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(110px);
  opacity: 0.4;
}
.glow-1 {
  width: 560px; height: 560px;
  background: var(--accent-soft);
  top: -220px; right: -160px;
}
.glow-2 {
  width: 440px; height: 440px;
  background: var(--accent-soft);
  bottom: -200px; left: -160px;
  opacity: 0.3;
}
.hero-watermark {
  position: absolute;
  top: -6%;
  right: -4%;
  width: min(48%, 620px);
  opacity: 0.06;
  filter: grayscale(1);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 1;
  max-width: 900px;
  margin: 0 auto;
  text-align: center;
}

.hero .eyebrow { justify-content: center; }
.hero-title {
  font-size: clamp(2.4rem, 6.4vw, 4.6rem);
  margin-bottom: 24px;
}
.hero-subtitle {
  font-size: clamp(1.05rem, 1.6vw, 1.25rem);
  max-width: 620px;
  margin: 0 auto 36px;
}
.hero-actions {
  display: flex;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
}

.hero-collage {
  position: relative;
  z-index: 1;
  max-width: var(--max-width);
  margin: 64px auto 0;
  width: 100%;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 14px;
}
.collage-cell {
  position: relative;
  aspect-ratio: 3 / 4;
  border-radius: var(--radius-md);
  border: 1px solid var(--surface-border);
  background: linear-gradient(155deg, var(--surface), var(--bg-soft));
  display: flex;
  align-items: flex-end;
  padding: 0 16px 16px;
  overflow: hidden;
  box-shadow: var(--shadow-soft);
}
.collage-cell img {
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 76%;
  width: 100%;
  object-fit: contain;
  object-position: center bottom;
}
.collage-cell span {
  position: relative;
  z-index: 1;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.85rem;
  color: var(--text);
}
.cell-2, .cell-4 { margin-top: 28px; }
.cell-3 { aspect-ratio: 3 / 5; margin-top: -28px; }

/* ---------- Marquee ---------- */
.marquee {
  border-top: 1px solid var(--surface-border);
  border-bottom: 1px solid var(--surface-border);
  overflow: hidden;
  padding: 18px 0;
  background: var(--bg-soft);
}
.marquee-track {
  display: flex;
  gap: 28px;
  width: max-content;
  animation: marquee 32s linear infinite;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-dim);
}
.marquee-track span:nth-child(2n) { color: var(--accent-dark); }
@keyframes marquee {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* ---------- Chi siamo ---------- */
.about-text p { font-size: 1.05rem; }
.about-text strong { color: var(--text); }
.about-text-solo { max-width: 740px; }

/* ---------- Attività cards ---------- */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.activity-card {
  background: var(--surface);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: border-color 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
}
.activity-card:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
  box-shadow: var(--shadow-soft);
}
.activity-icon {
  font-family: var(--font-display);
  font-weight: 700;
  font-style: italic;
  font-size: 1.6rem;
  color: var(--accent);
  margin-bottom: 18px;
}
.activity-card h3 { font-size: 1.1rem; margin-bottom: 10px; }
.activity-card p { font-size: 0.92rem; margin: 0; }

/* ---------- Contatti / CTA ---------- */
.cta-section { padding-bottom: clamp(100px, 12vw, 160px); }
.cta-box {
  background: var(--ink);
  --text: #f3ecdc;
  --text-dim: #b7ab93;
  border-radius: var(--radius-lg);
  padding: clamp(36px, 6vw, 64px);
  text-align: center;
}
.cta-box .eyebrow { color: var(--accent); }
.cta-box .section-title { margin-bottom: 18px; color: var(--text); }
.cta-box .section-lead { max-width: 560px; margin-left: auto; margin-right: auto; }

.contact-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  max-width: 760px;
  margin: 36px auto 32px;
  text-align: left;
}
.contact-item {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-md);
  padding: 18px 20px;
}
.contact-label {
  display: block;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--text-dim);
  margin-bottom: 6px;
}
.contact-item a, .contact-item span { font-weight: 600; font-size: 0.95rem; color: var(--text); }
.contact-item a:hover { color: var(--accent); }

/* ---------- Partner ---------- */
.partner-section { padding: 0 24px clamp(64px, 10vw, 120px); text-align: center; }
.partner-section .eyebrow { justify-content: center; }
.partner-grid {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: clamp(28px, 5vw, 56px);
  margin-top: 8px;
}
.partner-logo {
  height: 40px;
  width: auto;
  filter: grayscale(1);
  opacity: 0.55;
  transition: opacity 0.25s ease, filter 0.25s ease;
}
.partner-logo-wide { height: 34px; }
.partner-logo:hover { opacity: 1; filter: grayscale(0); }

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--surface-border);
  padding: 48px 24px 32px;
  background: var(--bg-soft);
}
.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  align-items: center;
  justify-content: space-between;
}
.footer-brand { display: flex; align-items: center; gap: 14px; max-width: 360px; }
.footer-logo { width: 150px; height: auto; }
.footer-brand p { font-size: 0.82rem; margin: 0; }
.footer-brand p strong { color: var(--text); font-family: var(--font-display); font-weight: 700; }
.footer-address { display: flex; flex-direction: column; gap: 6px; font-size: 0.86rem; }
.footer-address span:last-child { color: var(--text-dim); line-height: 1.4; }
.footer-nav { display: flex; gap: 20px; flex-wrap: wrap; }
.footer-nav a { font-size: 0.86rem; color: var(--text-dim); }
.footer-nav a:hover { color: var(--accent-dark); }
.footer-bottom {
  width: 100%;
  margin: 24px 0 0;
  padding-top: 20px;
  border-top: 1px solid var(--surface-border);
  display: flex;
  flex-wrap: wrap;
  gap: 10px 20px;
  align-items: center;
  justify-content: space-between;
}
.footer-legal {
  margin: 0;
  font-size: 0.78rem;
  color: var(--text-dim);
  opacity: 0.85;
}
.footer-legal-links { display: flex; gap: 18px; flex-wrap: wrap; }
.footer-legal-links a {
  font-size: 0.78rem;
  color: var(--text-dim);
  opacity: 0.85;
}
.footer-legal-links a:hover { color: var(--accent-dark); opacity: 1; }

.footer-5x1000 {
  background: var(--accent-soft);
  border-top: 1px solid var(--surface-border);
}
.footer-5x1000-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 18px 24px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 14px 24px;
  text-align: center;
}
.footer-5x1000-inner p { margin: 0; font-size: 0.9rem; color: var(--text); }
.footer-5x1000-inner strong { color: var(--accent-dark); }
.footer-5x1000-inner .btn { padding: 10px 20px; font-size: 0.85rem; flex-shrink: 0; }

/* ---------- Pagine legali (Privacy / Cookie) ---------- */
.legal-page {
  padding: clamp(140px, 14vw, 180px) 24px 100px;
}
.legal-inner { max-width: 820px; margin: 0 auto; }
.legal-inner .eyebrow { margin-bottom: 10px; }
.legal-updated {
  font-size: 0.85rem;
  color: var(--text-dim);
  margin-bottom: 40px;
}
.legal-inner h2 {
  font-size: 1.4rem;
  margin: 2.4em 0 0.8em;
}
.legal-inner h2:first-of-type { margin-top: 1.4em; }
.legal-inner p, .legal-inner li { font-size: 1rem; color: var(--text-dim); }
.legal-inner ul { padding-left: 1.2em; margin: 0 0 1em; }
.legal-inner li { margin-bottom: 0.5em; }
.legal-inner strong { color: var(--text); }
.legal-inner a { color: var(--accent-dark); text-decoration: underline; text-underline-offset: 2px; }
.legal-back {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-dim);
  margin-bottom: 28px;
}
.legal-back:hover { color: var(--accent-dark); }

/* ---------- Scroll reveal ---------- */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- Responsive ---------- */
@media (min-width: 560px) {
  .brand-name { display: block; }
}

@media (max-width: 960px) {
  .main-nav { display: none; }
  .nav-toggle { display: flex; }
  .header-actions .btn-accent { display: none; }

  .header-inner.nav-open .main-nav {
    display: flex;
    position: absolute;
    top: calc(100% + 10px);
    left: 0; right: 0;
    flex-direction: column;
    background: var(--surface);
    border: 1px solid var(--surface-border);
    border-radius: var(--radius-md);
    padding: 10px;
    box-shadow: var(--shadow-soft);
  }
  .header-inner.nav-open .main-nav a { text-align: center; padding: 12px 16px; }

  .hero-collage { grid-template-columns: repeat(3, 1fr); }
  .cell-4, .cell-5 { display: none; }

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

@media (max-width: 600px) {
  .header-inner { border-radius: var(--radius-md); flex-wrap: wrap; }
  .hero { padding-top: 120px; }
  .hero-collage { grid-template-columns: repeat(2, 1fr); }
  .cell-3 { display: none; }
  .cards-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
}