:root {
  --bg-main: #0f172a;
  --bg-card: #1e293b;
  --bg-card-sub: #334155;
  --primary: #3b82f6;
  --primary-hover: #2563eb;
  --accent: #ec4899;
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --border: #334155;
  --radius: 12px;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background-color: var(--bg-main);
  color: var(--text-main);
  line-height: 1.5;
  padding-bottom: 70px;
  overflow-x: hidden;
}

.container {
  max-width: 600px;
  margin: 0 auto;
  padding: 12px;
}

/* 顶部导航与状态 */
.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
  margin-bottom: 14px;
}

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

.brand-icon {
  font-size: 24px;
}

.brand-title {
  font-size: 17px;
  font-weight: 700;
  background: linear-gradient(135deg, #60a5fa, #f472b6);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.audio-btn {
  background-color: var(--bg-card-sub);
  color: var(--text-main);
  border: 1px solid var(--border);
  padding: 6px 12px;
  border-radius: 20px;
  font-size: 12px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 4px;
  transition: all 0.2s ease;
}

.audio-btn.active {
  background-color: #065f46;
  border-color: var(--success);
  color: #34d399;
}

/* 卡片通用样式 */
.card {
  background-color: var(--bg-card);
  border-radius: var(--radius);
  padding: 14px;
  margin-bottom: 14px;
  border: 1px solid var(--border);
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.2);
}

.card-title {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* 输入与按钮控件 */
.input-group {
  display: flex;
  gap: 8px;
}

.input-field {
  flex: 1;
  background-color: var(--bg-main);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-main);
  padding: 10px 12px;
  font-size: 14px;
  outline: none;
}

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

.btn {
  padding: 10px 16px;
  border-radius: 8px;
  border: none;
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
  transition: opacity 0.2s;
}

.btn:active {
  opacity: 0.8;
}

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

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

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

.btn-sm {
  padding: 6px 10px;
  font-size: 12px;
}

/* 统计数据条 */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  margin-bottom: 14px;
}

.stat-box {
  background-color: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 8px 4px;
  text-align: center;
}

.stat-val {
  font-size: 16px;
  font-weight: bold;
  color: var(--primary);
}

.stat-lbl {
  font-size: 11px;
  color: var(--text-muted);
}

/* 底部 Tab 导航 */
.tab-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background-color: var(--bg-card);
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-around;
  padding: 8px 0;
  z-index: 100;
  max-width: 600px;
  margin: 0 auto;
}

.tab-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  font-size: 11px;
  color: var(--text-muted);
  cursor: pointer;
  gap: 2px;
}

.tab-item.active {
  color: var(--primary);
  font-weight: 600;
}

.tab-item .icon {
  font-size: 18px;
}

/* 实时弹幕流水列表 */
.chat-list {
  height: calc(100vh - 280px);
  min-height: 320px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding-right: 4px;
}

.chat-item {
  background-color: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 12px;
  font-size: 13px;
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

.chat-user {
  font-weight: 600;
  color: #60a5fa;
  margin-right: 6px;
}

.chat-content {
  color: var(--text-main);
  word-break: break-word;
}

.ai-bubble {
  margin-top: 6px;
  background-color: #1e1b4b;
  border-left: 3px solid #818cf8;
  border-radius: 6px;
  padding: 6px 8px;
  color: #c7d2fe;
  font-size: 12px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.tag-gift {
  color: #f43f5e;
  font-weight: bold;
}

.tag-member {
  color: #10b981;
}

.tag-follow {
  color: #f59e0b;
}

/* 表单设置页 */
.form-group {
  margin-bottom: 12px;
}

.form-label {
  display: block;
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.form-textarea {
  width: 100%;
  height: 80px;
  background-color: var(--bg-main);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-main);
  padding: 8px 10px;
  font-size: 13px;
  outline: none;
  resize: vertical;
}

.form-select {
  width: 100%;
  background-color: var(--bg-main);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-main);
  padding: 10px;
  font-size: 13px;
  outline: none;
}

.switch-group {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.rule-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background-color: var(--bg-main);
  padding: 8px 12px;
  border-radius: 8px;
  margin-bottom: 6px;
  font-size: 12px;
}

.hidden {
  display: none !important;
}