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

:root {
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --success: #059669;
  --error: #dc2626;
  --text: #0f172a;
  --text-muted: #64748b;
  --border: #e2e8f0;
  --bg: #ffffff;
  --bg-muted: #f8fafc;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg-muted);
  padding: 20px;
}

.container {
  max-width: 600px;
  margin: 0 auto;
  background: var(--bg);
  padding: 30px;
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

header {
  text-align: center;
  margin-bottom: 30px;
  padding-bottom: 20px;
  border-bottom: 2px solid var(--border);
}

h1 {
  font-size: 2rem;
  color: var(--primary);
  margin-bottom: 8px;
}

.subtitle {
  color: var(--text-muted);
  font-size: 0.95rem;
}

.form-section {
  margin-bottom: 30px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border);
}

.form-section:last-of-type {
  border-bottom: none;
}

.form-section h2 {
  font-size: 1.25rem;
  margin-bottom: 15px;
  color: var(--text);
}

.form-group {
  margin-bottom: 20px;
}

label {
  display: block;
  font-weight: 600;
  margin-bottom: 6px;
  font-size: 0.9rem;
  color: var(--text);
}

input[type="text"],
input[type="email"],
select,
textarea {
  width: 100%;
  padding: 12px;
  border: 1.5px solid var(--border);
  border-radius: 8px;
  font-family: inherit;
  font-size: 1rem;
  transition: border-color 0.2s;
}

input[type="text"]:focus,
input[type="email"]:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--primary);
}

input[type="file"] {
  width: 100%;
  padding: 10px;
  border: 2px dashed var(--border);
  border-radius: 8px;
  background: var(--bg-muted);
  cursor: pointer;
  font-size: 0.9rem;
}

input[type="file"]:hover {
  border-color: var(--primary);
}

.form-hint {
  display: block;
  margin-top: 4px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.choice-grid {
  display: grid;
  gap: 10px;
  margin-top: 10px;
}

.choice {
  display: grid;
  grid-template-columns: 20px 1fr;
  gap: 10px;
  align-items: start;
  padding: 12px;
  border: 1.5px solid var(--border);
  border-radius: 10px;
  background: var(--bg-muted);
  cursor: pointer;
}

.choice input[type="radio"] {
  margin-top: 3px;
}

.choice:hover {
  border-color: var(--primary);
}

.spinner {
  width: 34px;
  height: 34px;
  border-radius: 999px;
  border: 4px solid rgba(255, 255, 255, 0.35);
  border-top-color: rgba(255, 255, 255, 0.95);
  animation: spin 0.9s linear infinite;
}

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

.btn-primary,
.btn-secondary {
  display: inline-block;
  width: 100%;
  padding: 14px 24px;
  font-size: 1rem;
  font-weight: 600;
  text-align: center;
  text-decoration: none;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.2s, transform 0.1s;
}

.btn-primary {
  background: var(--primary);
  color: white;
  margin-top: 10px;
}

.btn-primary:hover {
  background: var(--primary-hover);
}

.btn-primary:active {
  transform: scale(0.98);
}

.btn-primary:disabled {
  background: var(--text-muted);
  cursor: not-allowed;
}

.btn-secondary {
  background: white;
  color: var(--primary);
  border: 2px solid var(--primary);
  margin-top: 10px;
}

.btn-secondary:hover {
  background: var(--bg-muted);
}

/* main.css definisce l'aspetto dei bottoni NTB; qui manteniamo solo lo spacing. */
.container .btn {
  margin-top: 10px;
}

.result-box,
.error-box {
  margin-top: 30px;
  padding: 20px;
  border-radius: 8px;
  text-align: center;
}

.result-box {
  background: var(--success);
  color: white;
}

.result-box h3 {
  color: white;
  margin-bottom: 10px;
}

.result-box #case-id-display {
  font-family: monospace;
  font-size: 1.1rem;
}

.result-box.is-payment {
  background: #fff7ed;
  border: 2px solid #fdba74;
  color: #7c2d12;
}

.result-box.is-payment h3 {
  color: #7c2d12;
}

.result-box.is-payment .btn-secondary {
  border-color: #7c2d12;
  color: #7c2d12;
}

.result-box.is-payment .btn-secondary:hover {
  background: rgba(124, 45, 18, 0.06);
}

.result-box.is-payment .spinner {
  border-color: rgba(124, 45, 18, 0.25);
  border-top-color: rgba(124, 45, 18, 0.9);
}

.error-box {
  background: #fef2f2;
  border: 2px solid var(--error);
  color: var(--error);
}

.error-box h3 {
  color: var(--error);
  margin-bottom: 10px;
}

.btn-loader {
  display: inline-block;
}

@media (max-width: 480px) {
  .container {
    padding: 20px;
  }

  h1 {
    font-size: 1.5rem;
  }
}