* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}

:root {
  --primary: #1e3c72;
  --primary-light: #2a5298;
  --success: #4CAF50;
  --danger: #F44336;
  --warning: #ffc107;
  --card-bg: rgba(255, 255, 255, 0.1);
  --border-color: rgba(255, 255, 255, 0.2);
}

html, body {
  height: 100%;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  color: #fff;
  overflow-x: hidden;
}

/* iOS 刘海屏适配 */
body {
  background-color: var(--primary);
  padding-top: env(safe-area-inset-top);
  padding-bottom: env(safe-area-inset-bottom);
}

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

/* Header */
.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 16px;
  background: rgba(0, 0, 0, 0.2);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header h1 {
  font-size: 18px;
  font-weight: 600;
}

.controls {
  display: flex;
  gap: 8px;
}

.icon-btn {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 8px 12px;
  font-size: 16px;
  cursor: pointer;
  transition: all 0.2s;
}

.icon-btn:active {
  transform: scale(0.95);
  background: rgba(255, 255, 255, 0.2);
}

/* Tabs */
.tabs {
  display: flex;
  gap: 4px;
  padding: 8px 12px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.tabs::-webkit-scrollbar {
  display: none;
}

.tab-btn {
  flex-shrink: 0;
  background: var(--card-bg);
  border: 2px solid var(--border-color);
  border-radius: 20px;
  padding: 8px 14px;
  color: rgba(255, 255, 255, 0.8);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
  white-space: nowrap;
}

.tab-btn.active {
  background: rgba(76, 175, 80, 0.3);
  border-color: var(--success);
  color: #fff;
}

.tab-btn:active {
  transform: scale(0.95);
}

/* Main Content */
.main-content {
  flex: 1;
  padding: 12px;
  overflow-y: auto;
}

.tab-panel {
  display: none;
}

.tab-panel.active {
  display: block;
}

/* Coins Grid */
.coins-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}

@media (min-width: 480px) {
  .coins-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 768px) {
  .coins-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* Coin Card */
.coin-card {
  background: var(--card-bg);
  border: 2px solid var(--border-color);
  border-radius: 12px;
  padding: 12px;
  cursor: pointer;
  transition: all 0.2s;
  position: relative;
}

.coin-card:active {
  transform: scale(0.98);
  background: rgba(255, 255, 255, 0.15);
}

.coin-card-header {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 8px;
}

.coin-card-icon {
  font-size: 20px;
}

.coin-card-name {
  font-size: 14px;
  font-weight: 600;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.source-badge {
  font-size: 9px;
  padding: 2px 4px;
  border-radius: 3px;
  background: rgba(243, 186, 47, 0.3);
  color: #f3ba2f;
  margin-left: 4px;
}

.coin-card-price {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 4px;
  word-break: break-all;
}

.coin-card-change {
  font-size: 12px;
  font-weight: 600;
}

.coin-card-change.positive {
  color: var(--success);
}

.coin-card-change.negative {
  color: var(--danger);
}

.coin-card-note {
  font-size: 10px;
  color: var(--warning);
  margin-top: 4px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.coin-card-loading {
  color: rgba(255, 255, 255, 0.5);
  font-size: 12px;
}

.note-indicator {
  font-size: 10px;
  margin-left: 2px;
}

.empty-hint {
  grid-column: 1 / -1;
  text-align: center;
  padding: 40px 20px;
  color: rgba(255, 255, 255, 0.5);
  font-size: 14px;
}

/* Chart Modal */
.chart-modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.8);
  z-index: 200;
  padding: env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left);
}

.chart-modal.show {
  display: flex;
  flex-direction: column;
}

.chart-modal-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
}

.chart-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 16px;
  background: rgba(0, 0, 0, 0.2);
}

#chartTitle {
  font-size: 16px;
  font-weight: 600;
}

.close-btn {
  background: rgba(255, 255, 255, 0.1);
  border: none;
  border-radius: 50%;
  width: 32px;
  height: 32px;
  color: #fff;
  font-size: 16px;
  cursor: pointer;
}

.chart-container {
  flex: 1;
  padding: 8px;
}

.chart-container iframe {
  width: 100%;
  height: 100%;
  border: none;
  border-radius: 8px;
}

.debot-link {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  gap: 16px;
  color: rgba(255, 255, 255, 0.7);
}

.debot-link a {
  display: inline-block;
  padding: 12px 24px;
  background: var(--success);
  color: #fff;
  text-decoration: none;
  border-radius: 8px;
  font-weight: 600;
}

/* Settings Modal */
.settings-modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.8);
  z-index: 200;
  overflow-y: auto;
  padding: env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left);
}

.settings-modal.show {
  display: block;
}

.settings-content {
  min-height: 100%;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
}

.settings-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 16px;
  background: rgba(0, 0, 0, 0.2);
  position: sticky;
  top: 0;
  z-index: 10;
}

.settings-header h2 {
  font-size: 18px;
}

.settings-body {
  padding: 16px;
}

.settings-section {
  background: var(--card-bg);
  border-radius: 12px;
  padding: 16px;
  margin-bottom: 16px;
}

.settings-section h3 {
  font-size: 14px;
  margin-bottom: 12px;
  color: rgba(255, 255, 255, 0.9);
}

.checkbox-group {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.checkbox-group label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  cursor: pointer;
}

.checkbox-group input[type="checkbox"] {
  width: 18px;
  height: 18px;
}

.form-row {
  display: flex;
  gap: 8px;
  margin-bottom: 8px;
  flex-wrap: wrap;
}

.form-row input,
.form-row select {
  flex: 1;
  min-width: 100px;
  padding: 10px 12px;
  border: 2px solid var(--border-color);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  font-size: 14px;
}

.form-row input::placeholder {
  color: rgba(255, 255, 255, 0.5);
}

.form-row select option {
  background: var(--primary);
  color: #fff;
}

.add-btn,
.action-btn {
  padding: 10px 16px;
  background: var(--success);
  border: none;
  border-radius: 8px;
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
}

.add-btn:active,
.action-btn:active {
  transform: scale(0.95);
}

.list-container {
  margin-top: 12px;
}

.list-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 12px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 8px;
  margin-bottom: 6px;
}

.list-item-info {
  flex: 1;
  overflow: hidden;
}

.list-item-name {
  font-size: 14px;
  font-weight: 500;
}

.list-item-detail {
  font-size: 11px;
  color: rgba(255, 255, 255, 0.6);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.delete-btn {
  padding: 6px 12px;
  background: rgba(244, 67, 54, 0.3);
  border: none;
  border-radius: 6px;
  color: #fff;
  font-size: 12px;
  cursor: pointer;
}

/* Toast */
.toast {
  position: fixed;
  bottom: 80px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: rgba(0, 0, 0, 0.9);
  color: #fff;
  padding: 12px 24px;
  border-radius: 8px;
  font-size: 14px;
  opacity: 0;
  transition: all 0.3s;
  z-index: 300;
  max-width: 80%;
  text-align: center;
}

.toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

/* Pull to refresh hint */
.refresh-hint {
  text-align: center;
  padding: 10px;
  color: rgba(255, 255, 255, 0.5);
  font-size: 12px;
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 4px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.3);
  border-radius: 2px;
}

/* Animations */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

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

.coin-card {
  animation: slideUp 0.3s ease;
}