:root {
  --bg: #0d1117;
  --bg-soft: #161b22;
  --card: #1a2029;
  --card-hover: #202836;
  --border: #2a323d;
  --text: #e6edf3;
  --text-dim: #9aa7b4;
  --accent: #4dd0a7;
  --accent-2: #5b8cff;
  --danger: #ff6b6b;
  --radius: 16px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: 'Inter', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}

.glow {
  position: fixed;
  top: -30%;
  left: 50%;
  transform: translateX(-50%);
  width: 900px;
  height: 600px;
  background: radial-gradient(ellipse at center,
      rgba(91,140,255,0.16), rgba(77,208,167,0.10) 40%, transparent 70%);
  filter: blur(40px);
  pointer-events: none;
  z-index: 0;
}

/* ---------- Topbar ---------- */
.topbar {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 22px;
  max-width: 1000px;
  margin: 0 auto;
  width: 100%;
}
.brand {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 20px;
  letter-spacing: 0.5px;
  color: var(--text);
  text-decoration: none;
}
.brand-dot { color: var(--accent); margin: 0 2px; }
.topnav { display: flex; gap: 8px; }
.nav-link {
  color: var(--text-dim);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  padding: 8px 14px;
  border-radius: 10px;
  transition: all 0.15s;
}
.nav-link:hover { color: var(--text); background: var(--bg-soft); }
.nav-ghost { border: 1px solid var(--border); }

/* ---------- Layout ---------- */
.container {
  position: relative;
  z-index: 1;
  max-width: 1000px;
  margin: 0 auto;
  width: 100%;
  padding: 20px 22px 60px;
  flex: 1;
}

.hero { text-align: center; margin: 30px 0 40px; }
.hero h1 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(34px, 8vw, 56px);
  font-weight: 700;
  letter-spacing: -1px;
}
.accent { color: var(--accent); }
.sub { color: var(--text-dim); font-size: 16px; margin-top: 10px; }

/* ---------- Card grid ---------- */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
}
.card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 14px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  text-decoration: none;
  color: inherit;
  transition: transform 0.18s ease, background 0.18s, border-color 0.18s;
  overflow: hidden;
}
.card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(77,208,167,0.08), transparent 55%);
  opacity: 0;
  transition: opacity 0.18s;
}
.card:hover {
  transform: translateY(-4px);
  background: var(--card-hover);
  border-color: color-mix(in srgb, var(--accent) 45%, var(--border));
}
.card:hover::before { opacity: 1; }
.card-emoji { font-size: 34px; line-height: 1; }
.card-body h2 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 6px;
}
.card-body p { color: var(--text-dim); font-size: 14.5px; line-height: 1.5; }
.card-go {
  margin-top: auto;
  align-self: flex-start;
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  position: relative;
}

/* ---------- CTA area riservata ---------- */
.riservata-cta {
  margin-top: 44px;
  text-align: center;
  padding: 32px 20px;
  background: var(--bg-soft);
  border: 1px dashed var(--border);
  border-radius: var(--radius);
}
.riservata-cta p { color: var(--text-dim); margin-bottom: 16px; }

.btn {
  display: inline-block;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #06121a;
  font-weight: 600;
  font-size: 15px;
  text-decoration: none;
  padding: 12px 22px;
  border-radius: 12px;
  border: none;
  cursor: pointer;
  transition: filter 0.15s, transform 0.1s;
}
.btn:hover { filter: brightness(1.08); }
.btn:active { transform: scale(0.98); }
.btn-full { width: 100%; margin-top: 8px; }

/* ---------- Login ---------- */
.login-wrap { display: flex; justify-content: center; margin-top: 30px; }
.login-card {
  width: 100%;
  max-width: 400px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 26px;
}
.login-card h1 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 26px;
  margin-bottom: 6px;
}
.login-card .sub { text-align: left; font-size: 14px; margin-bottom: 22px; }
.login-card form { display: flex; flex-direction: column; gap: 16px; }
.login-card label {
  display: flex;
  flex-direction: column;
  gap: 7px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-dim);
}
.login-card input {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 13px 14px;
  color: var(--text);
  font-size: 16px;
  font-family: inherit;
  transition: border-color 0.15s;
}
.login-card input:focus { outline: none; border-color: var(--accent); }
.torna {
  display: inline-block;
  margin-top: 18px;
  color: var(--text-dim);
  text-decoration: none;
  font-size: 14px;
}
.torna:hover { color: var(--text); }

/* ---------- QR registrazione MFA ---------- */
.qr-box {
  display: flex;
  justify-content: center;
  background: #fff;
  border-radius: 14px;
  padding: 16px;
  margin: 6px 0 4px;
}
.qr-img { width: 240px; height: 240px; image-rendering: pixelated; display: block; }
.qr-manuale { margin-top: 14px; font-size: 13px; color: var(--text-dim); }
.qr-manuale summary { cursor: pointer; }
.qr-chiave {
  display: block;
  margin-top: 10px;
  padding: 10px 12px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--accent);
  font-family: ui-monospace, monospace;
  letter-spacing: 2px;
  word-break: break-all;
  text-align: center;
}
.enroll-hint {
  display: block;
  margin-top: 14px;
  color: var(--accent);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
}
.enroll-hint:hover { text-decoration: underline; }

/* ---------- Accesso SSH ---------- */
.ssh-btn { margin-top: 18px; }
.ssh-card {
  max-width: 640px;
  margin: 0 auto;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px;
}
.ssh-step { color: var(--text-dim); margin-bottom: 12px; font-size: 15px; }
.ssh-step strong { color: var(--text); }
.ssh-cmd-wrap {
  display: flex;
  align-items: stretch;
  gap: 8px;
  margin: 8px 0 18px;
}
.ssh-cmd {
  flex: 1;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px 16px;
  color: var(--accent);
  font-family: ui-monospace, monospace;
  font-size: 14px;
  overflow-x: auto;
  white-space: nowrap;
  display: flex;
  align-items: center;
}
.ssh-copia {
  flex-shrink: 0;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #06121a;
  border: none;
  border-radius: 12px;
  padding: 0 18px;
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
  transition: filter 0.15s, transform 0.1s;
}
.ssh-copia:hover { filter: brightness(1.08); }
.ssh-copia:active { transform: scale(0.96); }
.ssh-copia.copiato { background: var(--accent); }
.ssh-note { margin-top: 8px; font-size: 13.5px; color: var(--text-dim); }
.ssh-note summary { cursor: pointer; margin-bottom: 8px; }
.ssh-note ul { padding-left: 18px; line-height: 1.7; }
.ssh-note code {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1px 6px;
  font-family: ui-monospace, monospace;
  font-size: 12.5px;
  color: var(--text);
  word-break: break-all;
}

/* ---------- Flash ---------- */
.flash {
  background: color-mix(in srgb, var(--danger) 15%, transparent);
  border: 1px solid color-mix(in srgb, var(--danger) 45%, transparent);
  color: #ffd7d7;
  border-radius: 12px;
  padding: 12px 16px;
  margin-bottom: 20px;
  font-size: 14px;
}
.flash p + p { margin-top: 4px; }

/* ---------- Footer ---------- */
.footer {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 24px;
  color: var(--text-dim);
  font-size: 13px;
  border-top: 1px solid var(--border);
}