/* =========================================================
   progetti.css — DustNet.cloud /progetti
   Derivato dal design system di dustnet.cloud/index.html
   Charset: UTF-8
   ========================================================= */

:root {
  --bg: #050608; --bg-alt: #0b0d11; --bg-soft: #10131a;
  --accent: #4ade80; --accent-soft: rgba(74,222,128,0.15); --accent-strong: #22c55e;
  --danger: #f97373;
  --text-main: #e5e7eb; --text-soft: #9ca3af; --text-softer: #6b7280;
  --border-subtle: rgba(148,163,184,0.20);
  --shadow-soft: 0 22px 60px rgba(15,23,42,0.75);
  --radius-lg: 18px; --radius-xl: 26px; --radius-pill: 999px;
  --transition-fast: 180ms ease-out; --transition-med: 220ms ease-out;
  --nav-height: 72px; --grid-gap: 1.75rem;
}

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

html, body {
  margin: 0; padding: 0;
  font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: var(--text-main);
  background: radial-gradient(circle at top, #020617 0, #020411 45%, #020308 100%);
  scroll-behavior: smooth;
}

body {
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

h1, h2, h3 { margin: 0; letter-spacing: -0.03em; }
h2 { font-size: clamp(1.75rem, 2.2vw, 2.2rem); margin-bottom: 0.75rem; }
p { margin: 0.25rem 0 0.75rem; color: var(--text-soft); font-size: 0.98rem; }

/* === NAV === */
.nav-shell {
  position: sticky; top: 0; z-index: 40;
  backdrop-filter: blur(14px);
  background: linear-gradient(to bottom, rgba(2,6,23,0.92), rgba(2,6,23,0.70));
  border-bottom: 1px solid rgba(148,163,184,0.18);
}
.nav-inner {
  max-width: 1120px; margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0.5rem 1.5rem; height: var(--nav-height);
}
.brand { display: flex; align-items: center; gap: 0.65rem; }
.brand-mark {
  width: 30px; height: 30px; border-radius: 26%;
  border: 1px solid rgba(148,163,184,0.35);
  background:
    radial-gradient(circle at 10% 0%, rgba(74,222,128,0.45) 0, transparent 40%),
    radial-gradient(circle at 100% 100%, rgba(56,189,248,0.28) 0, transparent 40%),
    radial-gradient(circle at 50% 50%, #020617 0, #020617 100%);
  display: flex; align-items: center; justify-content: center;
  position: relative; overflow: hidden;
  box-shadow: 0 0 0 0.5px rgba(148,163,184,0.35), 0 10px 25px rgba(0,0,0,0.75);
}
.brand-mark::before {
  content: ""; position: absolute; inset: 24% 18%;
  border-radius: 50%; border: 1px solid rgba(148,163,184,0.45);
  background: radial-gradient(circle at 20% 0%, rgba(248,250,252,0.35) 0, transparent 55%);
  opacity: 0.8;
}
.brand-mark::after {
  content: ""; position: absolute; inset: 45% 6%;
  border-radius: 999px;
  background: linear-gradient(90deg, rgba(34,197,94,0.6), rgba(59,130,246,0.0));
  opacity: 0.9;
}
.brand-text-main {
  font-weight: 600; font-size: 0.98rem;
  letter-spacing: 0.08em; text-transform: uppercase; color: #e5e7eb;
}
.brand-text-sub { font-size: 0.75rem; color: var(--text-softer); }
.nav-links {
  display: flex; align-items: center; gap: 1.75rem; font-size: 0.9rem;
}
.nav-links a {
  color: var(--text-soft); padding: 0.3rem 0; position: relative;
}
.nav-links a::after {
  content: ""; position: absolute; left: 0; bottom: -0.35rem;
  width: 0; height: 1px;
  background: linear-gradient(90deg, var(--accent), #38bdf8);
  transition: width var(--transition-fast);
}
.nav-links a:hover { color: #e5e7eb; }
.nav-links a:hover::after { width: 100%; }
.nav-cta { display: flex; align-items: center; gap: 0.5rem; }

/* === BUTTONS === */
.btn-ghost {
  padding: 0.45rem 0.95rem; border-radius: var(--radius-pill);
  border: 1px solid rgba(148,163,184,0.45);
  background: radial-gradient(circle at 0 0, rgba(15,23,42,0.9), rgba(15,23,42,0.4));
  color: var(--text-soft); font-size: 0.82rem;
  display: inline-flex; align-items: center; gap: 0.35rem;
  transition: background var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
}
.btn-ghost:hover {
  border-color: rgba(148,163,184,0.9);
  background: radial-gradient(circle at 0 0, rgba(30,64,175,0.85), rgba(15,23,42,0.9));
  transform: translateY(-1px);
}
.btn-primary {
  padding: 0.55rem 1.1rem; border-radius: var(--radius-pill);
  border: 1px solid rgba(34,197,94,0.7);
  background: linear-gradient(120deg, rgba(22,163,74,0.98), rgba(22,163,74,0.8), rgba(34,197,94,0.85));
  box-shadow: 0 12px 35px rgba(34,197,94,0.35), 0 0 0 1px rgba(21,128,61,0.55);
  font-size: 0.82rem; color: #f9fafb; font-weight: 500;
  display: inline-flex; align-items: center; gap: 0.45rem;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
}
.btn-primary:hover {
  transform: translateY(-1px) translateZ(0);
  box-shadow: 0 18px 40px rgba(34,197,94,0.45), 0 0 0 1px rgba(21,128,61,0.7);
  background: linear-gradient(120deg, rgba(22,163,74,1), rgba(22,163,74,0.95), rgba(34,197,94,1));
}
.btn-icon {
  display: inline-flex; align-items: center; justify-content: center;
  width: 1.1rem; height: 1.1rem;
  border-radius: 999px; background: rgba(15,23,42,0.5); font-size: 0.85rem;
}

/* === MAIN LAYOUT === */
main {
  max-width: 1120px; margin: 0 auto; padding: 0 1.5rem 4rem;
}
section { margin-bottom: 4.5rem; position: relative; }

/* === PAGE HERO === */
.page-hero {
  padding: 3.5rem 0 2.75rem;
}
.page-hero .eyebrow {
  display: inline-flex; align-items: center; gap: 0.45rem;
  padding: 0.15rem 0.7rem 0.16rem; border-radius: 999px;
  background: linear-gradient(90deg, rgba(15,23,42,0.9), rgba(15,23,42,0.7));
  border: 1px solid rgba(148,163,184,0.35);
  font-size: 0.72rem; color: var(--text-softer);
  margin-bottom: 1.25rem; position: relative; overflow: hidden;
}
.eyebrow-dot {
  width: 7px; height: 7px; border-radius: 999px;
  background: radial-gradient(circle at 30% 0%, #bbf7d0 0, #22c55e 48%, #166534 100%);
  box-shadow: 0 0 0 4px rgba(34,197,94,0.25);
}
.page-hero h1 {
  font-size: clamp(2.1rem, 3vw, 2.8rem);
  line-height: 1.05; margin-bottom: 1rem;
}
.page-hero h1 .highlight {
  background: linear-gradient(120deg, #86efac, #22c55e, #22c55e, #6ee7b7);
  -webkit-background-clip: text; color: transparent;
}
.page-hero .subtitle {
  font-size: 1rem; color: var(--text-soft);
  max-width: 36rem; margin-bottom: 1.75rem;
}
.hero-cta-row {
  display: flex; flex-wrap: wrap; gap: 0.75rem; align-items: center;
}

/* === SECTION HEADER === */
.section-kicker {
  font-size: 0.78rem; color: var(--text-softer);
  text-transform: uppercase; letter-spacing: 0.16em; margin-bottom: 0.3rem;
}
.section-header-row {
  display: flex; flex-wrap: wrap; justify-content: space-between;
  gap: 1rem; margin-bottom: 1.5rem; align-items: flex-end;
}
.section-sub { font-size: 0.9rem; color: var(--text-soft); max-width: 32rem; }

/* === PROJECT CARDS (hub /progetti) === */
.projects-grid {
  display: grid; grid-template-columns: 1fr; gap: 1.5rem;
}
.project-card {
  border-radius: var(--radius-lg);
  border: 1px solid rgba(148,163,184,0.3);
  background: radial-gradient(circle at 0 0, rgba(15,23,42,0.9), rgba(15,23,42,0.92));
  padding: 1.4rem 1.5rem;
  position: relative; overflow: hidden;
  transition: transform var(--transition-med), box-shadow var(--transition-med), border-color var(--transition-med);
}
.project-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 18px 45px rgba(15,23,42,0.95);
  border-color: rgba(74,222,128,0.55);
}
.project-