/* ============================================================
   LPD Ready Quiz — Stile condiviso
   Font: Syne (display) + Lora (body) — tech-professionale
   Tema: dark navy con accenti oro/amber
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Syne:wght@400;600;700;800&family=Lora:ital,wght@0,400;0,500;1,400&display=swap');

:root {
  --navy:       #0b1628;
  --navy-2:     #111f3a;
  --navy-3:     #1a2f55;
  --blue:       #1e4d8c;
  --steel:      #3a7bd5;
  --gold:       #c8a84b;
  --gold-light: #e8c870;
  --white:      #f5f7fa;
  --muted:      #7a93b5;
  --border:     rgba(58,123,213,0.2);
  --success:    #2ecc71;
  --danger:     #e74c3c;
  --radius:     12px;
  --radius-lg:  20px;
  --shadow:     0 8px 32px rgba(0,0,0,0.4);
}

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

html { font-size: 16px; scroll-behavior: smooth; }

body {
  font-family: 'Lora', Georgia, serif;
  background: var(--navy);
  color: var(--white);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 24px 16px;
  position: relative;
  overflow-x: hidden;
}

/* ── Background grid ── */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(58,123,213,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(58,123,213,0.05) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
  z-index: 0;
}

/* ── Glow top-right ── */
body::after {
  content: '';
  position: fixed;
  top: -150px; right: -150px;
  width: 500px; height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(200,168,75,0.08) 0%, transparent 65%);
  pointer-events: none;
  z-index: 0;
}

/* ── Contenitore centrale ── */
.card {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 680px;
  background: var(--navy-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 48px 52px;
  box-shadow: var(--shadow);
  animation: fadeUp 0.5s ease both;
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── Header brand ── */
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 36px;
}

.brand-logo {
  font-family: 'Syne', sans-serif;
  font-size: 20px;
  font-weight: 800;
  color: var(--white);
  letter-spacing: -0.5px;
}

.brand-logo span { color: var(--gold); }

.brand-sep {
  flex: 1;
  height: 1px;
  background: var(--border);
}

.brand-label {
  font-family: 'Syne', sans-serif;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  color: var(--muted);
}

/* ── Titoli ── */
h1 {
  font-family: 'Syne', sans-serif;
  font-size: 28px;
  font-weight: 800;
  color: var(--white);
  line-height: 1.2;
  margin-bottom: 10px;
}

h2 {
  font-family: 'Syne', sans-serif;
  font-size: 20px;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 8px;
}

p {
  color: var(--muted);
  font-size: 15px;
  line-height: 1.7;
}

/* ── Form ── */
.form-group {
  margin-bottom: 20px;
}

label {
  display: block;
  font-family: 'Syne', sans-serif;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 8px;
}

input[type="text"],
input[type="email"] {
  width: 100%;
  background: var(--navy-3);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 18px;
  color: var(--white);
  font-family: 'Lora', serif;
  font-size: 15px;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

input[type="text"]:focus,
input[type="email"]:focus {
  border-color: var(--steel);
  box-shadow: 0 0 0 3px rgba(58,123,213,0.15);
}

input::placeholder { color: var(--muted); opacity: 0.6; }

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

/* ── Bottoni ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: 'Syne', sans-serif;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.5px;
  padding: 14px 28px;
  border-radius: var(--radius);
  border: none;
  cursor: pointer;
  transition: all 0.2s ease;
  text-decoration: none;
}

.btn-primary {
  background: var(--gold);
  color: var(--navy);
  width: 100%;
  margin-top: 8px;
  font-size: 15px;
  padding: 16px;
}

.btn-primary:hover {
  background: var(--gold-light);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(200,168,75,0.3);
}

.btn-primary:active { transform: translateY(0); }

.btn-outline {
  background: transparent;
  color: var(--white);
  border: 1px solid var(--border);
}

.btn-outline:hover {
  border-color: var(--steel);
  background: rgba(58,123,213,0.1);
}

/* ── Errori ── */
.errori {
  background: rgba(231,76,60,0.1);
  border: 1px solid rgba(231,76,60,0.3);
  border-radius: var(--radius);
  padding: 14px 18px;
  margin-bottom: 24px;
}

.errori li {
  color: #f1948a;
  font-size: 14px;
  list-style: none;
  padding: 3px 0;
}

.errori li::before { content: '⚠ '; }

/* ── Progress bar ── */
.progress-wrap {
  margin-bottom: 32px;
}

.progress-info {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 10px;
}

.progress-label {
  font-family: 'Syne', sans-serif;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--muted);
}

.progress-count {
  font-family: 'Syne', sans-serif;
  font-size: 22px;
  font-weight: 800;
  color: var(--gold);
}

.progress-count span {
  font-size: 14px;
  font-weight: 400;
  color: var(--muted);
}

.progress-bar {
  height: 4px;
  background: var(--navy-3);
  border-radius: 2px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--steel), var(--gold));
  border-radius: 2px;
  transition: width 0.5s cubic-bezier(.4,0,.2,1);
}

/* ── Categoria badge ── */
.categoria-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(58,123,213,0.12);
  border: 1px solid rgba(58,123,213,0.25);
  border-radius: 20px;
  padding: 5px 14px;
  font-family: 'Syne', sans-serif;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--steel);
  margin-bottom: 20px;
}

.categoria-badge::before {
  content: '';
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--gold);
}

/* ── Testo domanda ── */
.domanda-testo {
  font-size: 19px;
  font-weight: 500;
  color: var(--white);
  line-height: 1.6;
  margin-bottom: 32px;
  font-family: 'Lora', serif;
}

/* ── Opzioni risposta ── */
.opzioni {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 24px;
}

.opzione {
  display: flex;
  align-items: center;
  gap: 16px;
  background: var(--navy-3);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 20px;
  cursor: pointer;
  transition: all 0.2s ease;
  text-align: left;
  width: 100%;
  color: var(--white);
  font-family: 'Lora', serif;
  font-size: 15px;
  line-height: 1.5;
}

.opzione:hover:not(:disabled) {
  border-color: var(--steel);
  background: rgba(58,123,213,0.08);
  transform: translateX(4px);
}

.opzione:disabled { cursor: default; }

.opzione-lettera {
  flex-shrink: 0;
  width: 32px; height: 32px;
  border-radius: 50%;
  background: var(--navy);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Syne', sans-serif;
  font-size: 13px;
  font-weight: 700;
  color: var(--muted);
  transition: all 0.2s;
}

.opzione:hover:not(:disabled) .opzione-lettera {
  border-color: var(--steel);
  color: var(--steel);
}

/* Stati risposta */
.opzione.corretta {
  border-color: var(--success);
  background: rgba(46,204,113,0.08);
  animation: pulseGreen 0.4s ease;
}

.opzione.corretta .opzione-lettera {
  background: var(--success);
  border-color: var(--success);
  color: var(--navy);
}

.opzione.sbagliata {
  border-color: var(--danger);
  background: rgba(231,76,60,0.08);
  animation: shakeX 0.4s ease;
}

.opzione.sbagliata .opzione-lettera {
  background: var(--danger);
  border-color: var(--danger);
  color: #fff;
}

.opzione.corretta-evidenziata {
  border-color: var(--success);
  background: rgba(46,204,113,0.05);
}

.opzione.corretta-evidenziata .opzione-lettera {
  border-color: var(--success);
  color: var(--success);
}

@keyframes pulseGreen {
  0%   { box-shadow: 0 0 0 0 rgba(46,204,113,0.4); }
  70%  { box-shadow: 0 0 0 10px rgba(46,204,113,0); }
  100% { box-shadow: 0 0 0 0 rgba(46,204,113,0); }
}

@keyframes shakeX {
  0%, 100% { transform: translateX(0); }
  20%       { transform: translateX(-6px); }
  40%       { transform: translateX(6px); }
  60%       { transform: translateX(-4px); }
  80%       { transform: translateX(4px); }
}

/* ── Spiegazione ── */
.spiegazione {
  background: var(--navy-3);
  border-left: 3px solid var(--gold);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 16px 20px;
  margin-bottom: 24px;
  font-size: 14px;
  color: #a0bdd0;
  line-height: 1.7;
  display: none;
  animation: fadeUp 0.3s ease;
}

.spiegazione.visible { display: block; }

.spiegazione strong {
  display: block;
  font-family: 'Syne', sans-serif;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 6px;
}

/* ── Loading spinner ── */
.loading {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  color: var(--muted);
  font-family: 'Syne', sans-serif;
  font-size: 13px;
  letter-spacing: 1px;
  padding: 12px;
}

.spinner {
  width: 18px; height: 18px;
  border: 2px solid var(--border);
  border-top-color: var(--gold);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* ── Risultato ── */
.score-circle {
  width: 160px; height: 160px;
  border-radius: 50%;
  border: 3px solid var(--border);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  margin: 0 auto 32px;
  position: relative;
  background: var(--navy-3);
}

.score-circle.superato { border-color: var(--success); box-shadow: 0 0 40px rgba(46,204,113,0.2); }
.score-circle.fallito  { border-color: var(--danger);  box-shadow: 0 0 40px rgba(231,76,60,0.2); }

.score-number {
  font-family: 'Syne', sans-serif;
  font-size: 48px;
  font-weight: 800;
  line-height: 1;
}

.score-circle.superato .score-number { color: var(--success); }
.score-circle.fallito  .score-number { color: var(--danger); }

.score-label {
  font-family: 'Syne', sans-serif;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--muted);
  margin-top: 4px;
}

.result-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin: 24px 0 32px;
}

.stat-box {
  background: var(--navy-3);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 12px;
  text-align: center;
}

.stat-value {
  font-family: 'Syne', sans-serif;
  font-size: 24px;
  font-weight: 800;
  color: var(--gold);
}

.stat-label {
  font-family: 'Syne', sans-serif;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--muted);
  margin-top: 4px;
}

/* ── Responsive ── */
@media (max-width: 600px) {
  .card { padding: 32px 24px; }
  h1 { font-size: 22px; }
  .domanda-testo { font-size: 16px; }
  .form-row { grid-template-columns: 1fr; }
  .result-stats { grid-template-columns: 1fr; }
}