:root {
  --bg: #111215;
  --card-bg: #1a1c23;
  --card-border: #2d3139;
  --accent: #d97706;
  --accent-hover: #b45309;
  --accent-glow: rgba(217, 119, 6, 0.25);
  --text-main: #f3f4f6;
  --text-muted: #9ca3af;
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

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

body {
  background: var(--bg);
  color: var(--text-main);
  font-family: var(--font-sans);
  line-height: 1.5;
  padding-bottom: 60px;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: 680px;
  margin: 0 auto;
  padding: 16px;
}

header {
  text-align: center;
  padding: 24px 0 16px;
}

.badge {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 9999px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.badge-notice {
  background: rgba(245, 158, 11, 0.15);
  color: var(--warning);
  border: 1px solid var(--warning);
}

.badge-verified {
  background: rgba(16, 185, 129, 0.15);
  color: var(--success);
  border: 1px solid var(--success);
}

.badge-incompatible {
  background: rgba(239, 68, 68, 0.15);
  color: var(--danger);
  border: 1px solid var(--danger);
}

.badge-unverified {
  background: rgba(156, 163, 175, 0.15);
  color: var(--text-muted);
  border: 1px solid var(--text-muted);
}

h1 {
  font-size: 24px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 6px;
}

p.subtitle {
  font-size: 14px;
  color: var(--text-muted);
}

.disclaimer-banner {
  background: rgba(30, 32, 40, 0.85);
  border-left: 3px solid var(--warning);
  padding: 12px 14px;
  border-radius: 6px;
  margin: 16px 0;
  font-size: 12px;
  color: #d1d5db;
  line-height: 1.45;
}

.card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  padding: 20px;
  margin-bottom: 20px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.card-title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: #d1d5db;
  margin-bottom: 6px;
}

select, input[type="text"], input[type="email"] {
  width: 100%;
  background: #111215;
  border: 1px solid var(--card-border);
  color: #fff;
  padding: 12px 14px;
  border-radius: 8px;
  font-size: 14px;
  outline: none;
  transition: border 0.2s;
}

select:focus, input:focus {
  border-color: var(--accent);
}

.spec-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 16px;
}

@media (max-width: 480px) {
  .spec-grid {
    grid-template-columns: 1fr;
  }
}

.spec-box {
  background: #121318;
  border: 1px solid #282b33;
  border-radius: 8px;
  padding: 12px;
}

.spec-label {
  font-size: 11px;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-bottom: 4px;
  font-weight: 600;
}

.spec-value {
  font-size: 15px;
  font-weight: 600;
  color: #fff;
}

.spec-notes {
  font-size: 12px;
  color: #9ca3af;
  margin-top: 4px;
  line-height: 1.4;
}

.basket-notice-box {
  background: #15171f;
  border: 1px solid #2d3342;
  border-radius: 8px;
  padding: 12px 14px;
  margin-top: 14px;
  font-size: 12px;
  color: #d1d5db;
  line-height: 1.45;
}

.tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
  overflow-x: auto;
  padding-bottom: 4px;
}

.tab-btn {
  flex: 1;
  white-space: nowrap;
  background: #121318;
  border: 1px solid #282b33;
  color: var(--text-muted);
  padding: 10px 12px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  text-align: center;
  transition: all 0.2s;
}

.tab-btn.active {
  background: rgba(217, 119, 6, 0.15);
  border-color: var(--accent);
  color: #fbbf24;
  font-weight: 600;
}

.checklist-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  background: #121318;
  border: 1px solid #282b33;
  border-radius: 8px;
  padding: 12px;
  margin-bottom: 10px;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
}

.checklist-item:hover {
  background: #181a22;
  border-color: #3b404d;
}

.checklist-item.checked {
  background: rgba(16, 185, 129, 0.08);
  border-color: rgba(16, 185, 129, 0.35);
}

.checklist-item input[type="checkbox"] {
  width: 20px;
  height: 20px;
  accent-color: var(--success);
  margin-top: 2px;
  cursor: pointer;
  flex-shrink: 0;
}

.checklist-text {
  flex: 1;
}

.checklist-text h4 {
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 3px;
}

.checklist-item.checked .checklist-text h4 {
  text-decoration: line-through;
  color: #9ca3af;
}

.checklist-text p {
  font-size: 12px;
  color: #9ca3af;
  line-height: 1.4;
}

.progress-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
  font-size: 13px;
  color: #d1d5db;
}

.progress-bar-bg {
  flex: 1;
  height: 6px;
  background: #282b33;
  border-radius: 999px;
  margin: 0 12px;
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  width: 0%;
  background: var(--success);
  border-radius: 999px;
  transition: width 0.3s ease;
}

.btn-submit {
  width: 100%;
  background: var(--accent);
  color: #fff;
  border: none;
  padding: 12px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s, box-shadow 0.2s;
}

.btn-submit:hover {
  background: var(--accent-hover);
  box-shadow: 0 2px 8px var(--accent-glow);
}

.feedback-box {
  margin-top: 12px;
  padding: 10px 14px;
  border-radius: 6px;
  font-size: 12px;
  display: none;
}

.feedback-box.success {
  display: block;
  background: rgba(16, 185, 129, 0.15);
  border: 1px solid var(--success);
  color: #34d399;
}

.feedback-box.error {
  display: block;
  background: rgba(239, 68, 68, 0.15);
  border: 1px solid var(--danger);
  color: #f87171;
}

.mock-notice {
  font-size: 11px;
  color: #6b7280;
  margin-top: 8px;
  text-align: center;
}

footer {
  text-align: center;
  padding: 30px 16px 10px;
  font-size: 12px;
  color: #6b7280;
  border-top: 1px solid #1f222a;
  margin-top: 40px;
}