/* Contacts Card Scanner — Mobile-first CSS */
:root {
  --primary: #1a73e8;
  --primary-dark: #1557b0;
  --success: #34a853;
  --danger: #ea4335;
  --warning: #fbbc04;
  --bg: #f8f9fa;
  --surface: #ffffff;
  --text: #202124;
  --text-secondary: #5f6368;
  --border: #dadce0;
  --radius: 8px;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.12);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  min-height: 100vh;
}

/* Header */
.header {
  background: var(--primary);
  color: white;
  padding: 12px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow);
}

.header h1 {
  font-size: 18px;
  font-weight: 500;
}

.header-actions {
  display: flex;
  gap: 8px;
  align-items: center;
}

.user-email {
  font-size: 12px;
  opacity: 0.9;
  max-width: 150px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Navigation */
.nav {
  display: flex;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  overflow-x: auto;
}

.nav-btn {
  flex: 1;
  padding: 12px 8px;
  border: none;
  background: none;
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  white-space: nowrap;
  min-width: 80px;
  text-align: center;
}

.nav-btn.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
}

/* Pages */
.page {
  display: none;
  padding: 16px;
  max-width: 600px;
  margin: 0 auto;
}

.page.active {
  display: block;
}

/* Login page */
.login-page {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 80vh;
  text-align: center;
  padding: 24px;
}

.login-page h2 {
  font-size: 24px;
  margin-bottom: 8px;
}

.login-page p {
  color: var(--text-secondary);
  margin-bottom: 32px;
}

.login-logo {
  font-size: 48px;
  margin-bottom: 16px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  border: none;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.2s;
  text-decoration: none;
}

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

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

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

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

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

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

.btn-sm {
  padding: 6px 12px;
  font-size: 13px;
}

.btn-block {
  width: 100%;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Cards */
.card {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 16px;
  margin-bottom: 12px;
  box-shadow: var(--shadow);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.card-title {
  font-size: 16px;
  font-weight: 600;
}

/* Forms */
.form-group {
  margin-bottom: 12px;
}

.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 4px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 14px;
  font-family: inherit;
  transition: border-color 0.2s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
}

.form-group textarea {
  resize: vertical;
  min-height: 60px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

/* Scanner */
.capture-area {
  text-align: center;
  padding: 32px 16px;
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  margin-bottom: 16px;
  background: var(--surface);
}

.capture-area p {
  color: var(--text-secondary);
  margin-top: 8px;
  font-size: 13px;
}

.capture-buttons {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

#camera-input,
#gallery-input {
  display: none;
}

.preview-img {
  max-width: 100%;
  max-height: 200px;
  border-radius: var(--radius);
  margin-bottom: 12px;
}

/* Status / Loading */
.status {
  padding: 12px;
  border-radius: var(--radius);
  margin-bottom: 12px;
  font-size: 14px;
}

.status-info {
  background: #e8f0fe;
  color: #1967d2;
}

.status-success {
  background: #e6f4ea;
  color: #137333;
}

.status-error {
  background: #fce8e6;
  color: #c5221f;
}

.spinner {
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid var(--border);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin-right: 8px;
  vertical-align: middle;
}

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

.hidden {
  display: none !important;
}

/* Contact list */
.contact-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px;
  border-bottom: 1px solid var(--border);
}

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

.contact-info h3 {
  font-size: 15px;
  font-weight: 500;
}

.contact-info p {
  font-size: 13px;
  color: var(--text-secondary);
}

.contact-meta {
  font-size: 12px;
  color: var(--text-secondary);
  text-align: right;
}

/* Event selector */
.event-selector {
  margin-bottom: 16px;
}

.event-selector select {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 14px;
  background: var(--surface);
}

/* Empty state */
.empty-state {
  text-align: center;
  padding: 48px 16px;
  color: var(--text-secondary);
}

.empty-state p {
  font-size: 14px;
}

/* Toolbar */
.toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
  flex-wrap: wrap;
  gap: 8px;
}

/* Modal */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 200;
  padding: 16px;
}

.modal {
  background: var(--surface);
  border-radius: 12px;
  padding: 24px;
  width: 100%;
  max-width: 400px;
  max-height: 90vh;
  overflow-y: auto;
}

.modal h3 {
  margin-bottom: 16px;
}

.modal-actions {
  display: flex;
  gap: 8px;
  justify-content: flex-end;
  margin-top: 16px;
}

/* Responsive */
@media (max-width: 360px) {
  .form-row {
    grid-template-columns: 1fr;
  }
  .header h1 {
    font-size: 16px;
  }
}