:root {
  --primary: #0F172A;
  --primary-light: #1E293B;
  --accent: #0EA5E9;
  --accent-dark: #0284C7;
  --success: #22C55E;
  --warning: #F59E0B;
  --danger: #EF4444;
  --text: #F8FAFC;
  --text-muted: #94A3B8;
  --text-dark: #1E293B;
  --bg: #0F172A;
  --bg-card: #1E293B;
  --bg-input: #334155;
  --border: #334155;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
}

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

html, body {
  height: 100%;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

#app {
  min-height: 100%;
  display: flex;
  flex-direction: column;
}

.container {
  width: 100%;
  max-width: 480px;
  margin: 0 auto;
  padding: 0 16px;
}

.screen {
  min-height: 100vh;
  padding: 24px 16px;
  padding-top: env(safe-area-inset-top, 24px);
  padding-bottom: env(safe-area-inset-bottom, 24px);
}

.header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
}

.header-back {
  background: none;
  border: none;
  color: var(--text);
  font-size: 24px;
  cursor: pointer;
  padding: 8px;
  margin: -8px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.header-title {
  font-size: 20px;
  font-weight: 600;
}

h1 {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 8px;
}

h2 {
  font-size: 22px;
  font-weight: 600;
  margin-bottom: 8px;
}

h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
}

p {
  color: var(--text-muted);
  margin-bottom: 16px;
}

.card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 16px;
  box-shadow: var(--shadow);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 24px;
  font-size: 16px;
  font-weight: 600;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  transition: all 0.2s;
  text-decoration: none;
  width: 100%;
}

.btn-primary {
  background: var(--accent);
  color: white;
}

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

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

.btn-secondary {
  background: var(--bg-input);
  color: var(--text);
}

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

.btn-outline {
  background: transparent;
  border: 2px solid var(--border);
  color: var(--text);
}

.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent);
}

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

.btn-danger {
  background: var(--danger);
  color: white;
}

.input-group {
  margin-bottom: 16px;
}

.input-label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.input {
  width: 100%;
  padding: 14px 16px;
  font-size: 16px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  outline: none;
  transition: border-color 0.2s;
}

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

.input::placeholder {
  color: var(--text-muted);
}

select.input {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%2394A3B8' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 44px;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  font-size: 12px;
  font-weight: 600;
  border-radius: 20px;
  background: var(--accent);
  color: white;
}

.badge-success {
  background: var(--success);
}

.badge-warning {
  background: var(--warning);
  color: var(--text-dark);
}

.text-center {
  text-align: center;
}

.text-muted {
  color: var(--text-muted);
}

.mb-4 { margin-bottom: 16px; }
.mb-6 { margin-bottom: 24px; }
.mb-8 { margin-bottom: 32px; }
.mt-4 { margin-top: 16px; }
.mt-6 { margin-top: 24px; }
.mt-auto { margin-top: auto; }

.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: 8px; }
.gap-3 { gap: 12px; }
.gap-4 { gap: 16px; }

.logo {
  width: 64px;
  height: 64px;
  background: linear-gradient(135deg, var(--accent), var(--success));
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  font-weight: 700;
  color: white;
  margin: 0 auto 16px;
}

.price-tag {
  font-size: 36px;
  font-weight: 700;
  color: var(--accent);
}

.price-tag small {
  font-size: 16px;
  font-weight: 400;
  color: var(--text-muted);
}

.feature-list {
  list-style: none;
}

.feature-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
}

.feature-item:last-child {
  border-bottom: none;
}

.feature-icon {
  width: 24px;
  height: 24px;
  background: var(--success);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: white;
  font-size: 14px;
}

.step-indicator {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-bottom: 24px;
}

.step-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--border);
  transition: all 0.3s;
}

.step-dot.active {
  background: var(--accent);
  width: 24px;
  border-radius: 5px;
}

.step-dot.completed {
  background: var(--success);
}

.photo-capture {
  width: 100%;
  aspect-ratio: 4/3;
  background: var(--bg-input);
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  cursor: pointer;
  transition: all 0.2s;
  overflow: hidden;
  position: relative;
}

.photo-capture:hover {
  border-color: var(--accent);
}

.photo-capture img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.photo-capture-icon {
  font-size: 48px;
  color: var(--text-muted);
}

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

.photo-actions {
  position: absolute;
  bottom: 12px;
  left: 12px;
  right: 12px;
  display: flex;
  gap: 8px;
}

.photo-actions .btn {
  flex: 1;
  padding: 10px;
  font-size: 14px;
}

.walkaround-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.walkaround-item {
  background: var(--bg-card);
  border-radius: var(--radius-sm);
  padding: 12px;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s;
  border: 2px solid transparent;
}

.walkaround-item:hover {
  border-color: var(--accent);
}

.walkaround-item.completed {
  border-color: var(--success);
}

.walkaround-item-number {
  width: 28px;
  height: 28px;
  background: var(--bg-input);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 8px;
  font-size: 14px;
  font-weight: 600;
}

.walkaround-item.completed .walkaround-item-number {
  background: var(--success);
}

.walkaround-item-label {
  font-size: 13px;
  color: var(--text-muted);
}

.progress-bar {
  height: 6px;
  background: var(--bg-input);
  border-radius: 3px;
  overflow: hidden;
  margin-bottom: 8px;
}

.progress-fill {
  height: 100%;
  background: var(--accent);
  border-radius: 3px;
  transition: width 0.3s;
}

.loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 48px;
  gap: 16px;
}

.spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.spinner-small {
  display: inline-block;
  width: 14px;
  height: 14px;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  vertical-align: middle;
  margin-right: 6px;
}

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

.verification-hash {
  font-family: 'SF Mono', Monaco, monospace;
  font-size: 11px;
  word-break: break-all;
  background: var(--bg-input);
  padding: 12px;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
}

.hidden {
  display: none !important;
}

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 16px;
}

.modal {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 24px;
  max-width: 400px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
}

.modal-title {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 16px;
}

.lookup-input-group {
  display: flex;
  gap: 8px;
}

.lookup-input-group .input {
  flex: 1;
}

.lookup-input-group .btn {
  width: auto;
  padding: 14px 20px;
}

@media (max-width: 380px) {
  h1 { font-size: 24px; }
  .price-tag { font-size: 32px; }
  .btn { padding: 12px 20px; font-size: 15px; }
}