:root {
  --bg: #0b0d17;
  --bg-soft: #12152a;
  --surface: rgba(255, 255, 255, 0.04);
  --surface-strong: rgba(255, 255, 255, 0.07);
  --border: rgba(255, 255, 255, 0.1);
  --text: #eef0f7;
  --text-dim: #a3a8bd;
  --accent: #6366f1;
  --radius: 18px;
  --shadow: 0 20px 60px rgba(0, 0, 0, 0.45);
  --maxw: 1080px;
}

[data-theme="light"] {
  --bg: #f4f5fb;
  --bg-soft: #ffffff;
  --surface: rgba(15, 18, 40, 0.03);
  --surface-strong: rgba(15, 18, 40, 0.06);
  --border: rgba(15, 18, 40, 0.1);
  --text: #14172a;
  --text-dim: #565c78;
  --shadow: 0 20px 50px rgba(30, 35, 80, 0.12);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: "Inter", system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  transition: background 0.4s ease, color 0.4s ease;
}

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* Background glow */
.bg-glow {
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(600px circle at 15% 10%, rgba(99, 102, 241, 0.22), transparent 45%),
    radial-gradient(600px circle at 85% 25%, rgba(236, 72, 153, 0.18), transparent 45%);
  pointer-events: none;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(14px);
  background: color-mix(in srgb, var(--bg) 75%, transparent);
  border-bottom: 1px solid var(--border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  color: var(--text);
  text-decoration: none;
  letter-spacing: -0.01em;
}

.brand-mark { color: var(--accent); font-size: 1.2rem; }

.nav-links { display: flex; gap: 24px; }

.nav-links a {
  color: var(--text-dim);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  transition: color 0.2s ease;
}

.nav-links a:hover { color: var(--text); }

.nav-controls { display: flex; align-items: center; gap: 10px; }

.lang-switch {
  display: inline-flex;
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: 12px;
  overflow: hidden;
}

.lang-btn {
  border: 0;
  background: transparent;
  color: var(--text-dim);
  font-family: inherit;
  font-weight: 600;
  font-size: 0.82rem;
  letter-spacing: 0.02em;
  padding: 8px 12px;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease;
}

.lang-btn:hover { color: var(--text); }

.lang-btn.active {
  background: var(--accent);
  color: #fff;
}

.theme-toggle {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
  font-size: 1.1rem;
  transition: background 0.2s ease, transform 0.2s ease;
}

.theme-toggle:hover { background: var(--surface-strong); transform: translateY(-1px); }

/* Hero */
.hero { padding: 96px 24px 64px; text-align: center; }

.eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 6px 14px;
  border-radius: 999px;
  margin: 0 0 24px;
}

.hero-title {
  font-size: clamp(2.6rem, 7vw, 4.4rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.15;
  padding-bottom: 0.08em; /* spazio per i discendenti (g, p) col background-clip */
  margin: 0 0 20px;
  background: linear-gradient(135deg, var(--text), var(--text-dim));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-sub {
  max-width: 560px;
  margin: 0 auto 36px;
  font-size: 1.12rem;
  color: var(--text-dim);
}

.hero-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: 12px;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  cursor: pointer;
  border: 1px solid transparent;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease, opacity 0.18s ease;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), #8b5cf6);
  color: #fff;
  box-shadow: 0 10px 30px rgba(99, 102, 241, 0.35);
}

.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 14px 38px rgba(99, 102, 241, 0.45); }

.btn-ghost { background: var(--surface); color: var(--text); border-color: var(--border); }

.btn-ghost:hover { background: var(--surface-strong); transform: translateY(-2px); }

/* Projects */
.projects { padding: 40px 24px 80px; }

.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
}

.project-card {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 30px;
  overflow: hidden;
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

.project-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 4px;
  background: var(--card-accent, var(--accent));
}

.project-card:hover {
  transform: translateY(-6px);
  border-color: color-mix(in srgb, var(--card-accent, var(--accent)) 50%, var(--border));
  box-shadow: var(--shadow);
}

.card-icon {
  display: grid;
  place-items: center;
  width: 54px;
  height: 54px;
  border-radius: 14px;
  font-size: 1.5rem;
  color: #fff;
  background: var(--card-accent, var(--accent));
  margin-bottom: 18px;
}

/* Quando l'icona è un'immagine (es. app icon), niente sfondo colorato */
.card-icon--image {
  background: none;
  overflow: hidden;
}

.card-icon--image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 14px;
  display: block;
}

.card-name { font-size: 1.5rem; font-weight: 700; margin: 0 0 4px; letter-spacing: -0.01em; }

.card-tagline { color: var(--card-accent, var(--accent)); font-weight: 600; font-size: 0.9rem; margin: 0 0 14px; }

.card-desc { color: var(--text-dim); font-size: 0.98rem; margin: 0 0 24px; }

.platforms { display: flex; flex-wrap: wrap; gap: 10px; }

.platform-btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 9px 15px;
  border-radius: 10px;
  font-size: 0.88rem;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid var(--border);
  background: var(--surface-strong);
  color: var(--text);
  transition: transform 0.18s ease, background 0.18s ease, border-color 0.18s ease;
}

.platform-btn:hover { transform: translateY(-2px); border-color: var(--card-accent, var(--accent)); }

.platform-btn.disabled {
  opacity: 0.45;
  cursor: not-allowed;
  pointer-events: none;
}

.platform-btn .soon {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--text-dim);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1px 6px;
  margin-left: 2px;
}

/* About */
.about { padding: 20px 24px 90px; }

.about-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px;
  max-width: 720px;
  margin: 0 auto;
}

.about-card h2 { margin: 0 0 12px; font-size: 1.6rem; letter-spacing: -0.01em; }

.about-card p { color: var(--text-dim); margin: 0; }

/* Footer */
.site-footer { border-top: 1px solid var(--border); padding: 28px 0; }

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  color: var(--text-dim);
  font-size: 0.9rem;
}

/* Reveal animation */
.reveal { opacity: 0; transform: translateY(20px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.visible { opacity: 1; transform: none; }

@media (max-width: 560px) {
  .nav-links { display: none; }
  .hero { padding-top: 64px; }
  .project-card { padding: 24px; }
  .about-card { padding: 28px; }
}