/* TransferPro Premium Stylesheet (Glassmorphism & Neon Dark Mode) */

:root {
  --bg-color: #050508;
  --surface-color: #0b0b12;
  --primary-color: #6c5ce7;
  --primary-glow: #a29bfe;
  --accent-color: #00cec9;
  --success-color: #00b894;
  --warning-color: #fdcb6e;
  --error-color: #ff7675;
  --text-main: #ffffff;
  --text-secondary: rgba(255, 255, 255, 0.6);
  --border-color: rgba(255, 255, 255, 0.08);
  --glass-bg: rgba(255, 255, 255, 0.03);
  --glass-blur: blur(20px);
  --font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

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

body {
  background-color: var(--bg-color);
  color: var(--text-main);
  font-family: var(--font-family);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 20px;
  background-image: radial-gradient(circle at 10% 20%, rgba(108, 92, 231, 0.15) 0%, transparent 40%),
                    radial-gradient(circle at 90% 80%, rgba(0, 206, 201, 0.1) 0%, transparent 40%);
}

/* 核心布局容器 */
.container {
  width: 100%;
  max-width: 1000px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.hidden {
  display: none !important;
}

/* 玻璃卡片底座 */
.glass-panel {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 24px;
  box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.text-secondary {
  color: var(--text-secondary);
  font-size: 14px;
}

/* 头部样式 */
.main-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 24px;
}

.logo-area {
  display: flex;
  align-items: center;
  gap: 12px;
}

.app-logo {
  width: 48px;
  height: 48px;
  object-fit: contain;
  transition: all 0.3s ease;
}

@media (max-width: 768px) {
  .app-logo {
    width: 36px;
    height: 36px;
  }
}

.logo-text {
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.5px;
  background: linear-gradient(135deg, #ffffff 0%, var(--primary-glow) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  transition: all 0.3s ease;
}

@media (max-width: 768px) {
  .logo-text {
    font-size: 20px;
  }
}

/* 勋章/标记 */
.badge {
  padding: 6px 12px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.5px;
}

.badge-error {
  background: rgba(255, 118, 117, 0.15);
  color: var(--error-color);
  border: 1px solid rgba(255, 118, 117, 0.3);
}

.badge-success {
  background: rgba(0, 184, 148, 0.15);
  color: var(--success-color);
  border: 1px solid rgba(0, 184, 148, 0.3);
}

.badge-warning {
  background: rgba(253, 203, 110, 0.15);
  color: var(--warning-color);
  border: 1px solid rgba(253, 203, 110, 0.3);
}

/* 按钮样式 */
.btn {
  font-family: var(--font-family);
  font-size: 14px;
  font-weight: 600;
  padding: 10px 20px;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-color) 0%, #5b4bc4 100%);
  color: #fff;
  box-shadow: 0 4px 14px 0 rgba(108, 92, 231, 0.4);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px 0 rgba(108, 92, 231, 0.6);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-main);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
}

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

/* === Landing 页面 === */
.intro-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  padding: 40px;
}

.intro-card h2 {
  font-size: 28px;
  font-weight: 700;
}

.qr-wrapper {
  padding: 16px;
  background: #ffffff;
  border-radius: 12px;
  box-shadow: 0 0 30px rgba(108, 92, 231, 0.3);
  margin: 20px 0;
  animation: pulseBorder 3s infinite alternate;
  display: flex;
  justify-content: center;
  align-items: center;
}

.qr-code canvas, .qr-code img {
  display: block;
}

.qr-placeholder-spinner {
  width: 200px;
  height: 200px;
  display: flex;
  justify-content: center;
  align-items: center;
}

.qr-link-text {
  font-size: 12px;
  margin-top: 5px;
}

.qr-link-text a {
  color: var(--primary-glow);
  text-decoration: none;
}

.qr-link-text a:hover {
  text-decoration: underline;
}

.guide-tip {
  font-size: 12px;
  color: var(--text-secondary);
}

/* 特性网格 */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
}

.feature-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.feature-icon {
  font-size: 24px;
  margin-bottom: 8px;
}

.feature-card h3 {
  font-size: 16px;
  font-weight: 600;
}

.feature-card p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* === 等待配对 (Connecting View) === */
.connecting-card {
  padding: 60px 40px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}

.spinner {
  width: 50px;
  height: 50px;
  border: 4px solid rgba(255, 255, 255, 0.1);
  border-left-color: var(--primary-color);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

/* === 功能主页 (Connected View) === */
.connected-layout {
  display: grid;
  grid-template-columns: 240px 1.2fr 0.8fr;
  gap: 0;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  box-shadow: 0 12px 40px 0 rgba(0, 0, 0, 0.5);
  overflow: hidden;
}

/* 覆盖子面板，扁平平铺，实现 macOS Finder 统一窗口 */
.connected-layout .glass-panel {
  background: transparent !important;
  border: none !important;
  border-radius: 0 !important;
  box-shadow: none !important;
  backdrop-filter: none !important;
  -webkit-backdrop-filter: none !important;
  padding: 24px 20px;
}

/* 列垂直分割线 */
.devices-panel {
  border-right: 1px solid var(--border-color) !important;
}

.transfer-panel {
  border-right: 1px solid var(--border-color) !important;
}

.panel-title {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 16px;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 10px;
}

/* 拖拽上传区 */
.dropzone-area {
  border: 2px dashed rgba(255, 255, 255, 0.15);
  border-radius: 12px;
  padding: 40px 20px;
  text-align: center;
  transition: all 0.2s ease;
  background: rgba(255, 255, 255, 0.01);
}

.dropzone-area.dragover {
  border-color: var(--primary-color);
  background: rgba(108, 92, 231, 0.05);
  transform: scale(1.02);
}

.dropzone-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.upload-icon {
  font-size: 36px;
}

.limit-indicator {
  font-size: 12px;
  margin-top: 10px;
  text-align: center;
}

/* 传输记录区 */
.transfer-container {
  margin-top: 24px;
}

.transfer-container h4 {
  font-size: 14px;
  margin-bottom: 10px;
  color: var(--text-secondary);
}

.transfer-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-height: 300px;
  overflow-y: auto;
  padding-right: 5px;
}

.file-item {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.file-info {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.file-name {
  font-size: 14px;
  font-weight: 500;
  text-overflow: ellipsis;
  overflow: hidden;
  white-space: nowrap;
  max-width: 70%;
}

.file-size {
  font-size: 12px;
  color: var(--text-secondary);
}

.progress-bar-wrapper {
  background: rgba(255, 255, 255, 0.05);
  height: 6px;
  border-radius: 3px;
  overflow: hidden;
}

.progress-bar {
  background: linear-gradient(90deg, var(--primary-color) 0%, var(--primary-glow) 100%);
  height: 100%;
  width: 0%;
  transition: width 0.1s linear;
}

.transfer-stats {
  display: flex;
  font-size: 11px;
  color: var(--text-secondary);
  gap: 10px;
}

.transfer-success {
  border-color: rgba(0, 184, 148, 0.3);
  background: rgba(0, 184, 148, 0.02);
}

.transfer-error {
  border-color: rgba(255, 118, 117, 0.3);
  background: rgba(255, 118, 117, 0.02);
}

/* 文本/即时聊天 */
.chat-panel {
  display: flex;
  flex-direction: column;
  height: 480px;
}

.chat-history {
  flex-grow: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding-right: 5px;
  margin-bottom: 12px;
}

.chat-message {
  display: flex;
  flex-direction: column;
  max-width: 85%;
}

.chat-message.bubble-me {
  align-self: flex-end;
}

.chat-message.bubble-peer {
  align-self: flex-start;
}

.chat-message.system {
  align-self: center;
  max-width: 95%;
  font-size: 12px;
  color: var(--text-secondary);
}

.chat-meta {
  display: flex;
  font-size: 10px;
  color: var(--text-secondary);
  margin-bottom: 2px;
  gap: 6px;
}

.bubble-me .chat-meta {
  justify-content: flex-end;
}

.chat-bubble {
  padding: 10px 14px;
  border-radius: 12px;
  font-size: 13px;
  line-height: 1.4;
  word-break: break-all;
}

.bubble-me .chat-bubble {
  background: var(--primary-color);
  color: #fff;
  border-top-right-radius: 2px;
}

.bubble-peer .chat-bubble {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-main);
  border-top-left-radius: 2px;
  border: 1px solid var(--border-color);
}

.system .chat-bubble {
  background: rgba(255, 255, 255, 0.02);
  text-align: center;
  padding: 6px 12px;
  border-radius: 4px;
}

.chat-input-area {
  display: flex;
  gap: 10px;
}

.chat-input-area textarea {
  flex-grow: 1;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  color: #fff;
  padding: 10px;
  font-family: var(--font-family);
  font-size: 13px;
  resize: none;
  outline: none;
}

.chat-input-area textarea:focus {
  border-color: var(--primary-glow);
}

/* === 微信引导遮罩 === */
.guide-overlay, .modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(5, 5, 8, 0.85);
  z-index: 100;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 20px;
}

.guide-content, .modal-content {
  max-width: 420px;
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.warning-icon {
  font-size: 48px;
}

.instructions {
  display: flex;
  flex-direction: column;
  gap: 12px;
  text-align: left;
  background: rgba(255, 255, 255, 0.02);
  border-radius: 8px;
  padding: 16px;
  border: 1px solid var(--border-color);
}

.step-item {
  display: flex;
  gap: 12px;
  align-items: center;
}

.step-num {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--primary-color);
  color: #fff;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 12px;
  font-weight: 700;
  flex-shrink: 0;
}

.divider {
  display: flex;
  align-items: center;
  text-align: center;
  color: var(--text-secondary);
  font-size: 12px;
}

.divider::before, .divider::after {
  content: '';
  flex: 1;
  border-bottom: 1px solid var(--border-color);
}

.divider:not(:empty)::before {
  margin-right: .5em;
}

.divider:not(:empty)::after {
  margin-left: .5em;
}

/* 支付与赞助模块 */
.pay-qr-box {
  display: flex;
  justify-content: center;
}

.qr-mock-glow {
  padding: 12px 24px;
  background: linear-gradient(135deg, #10ac84 0%, #1dd1a1 100%);
  color: #fff;
  border-radius: 20px;
  font-weight: 700;
  font-size: 18px;
  box-shadow: 0 4px 15px rgba(29, 209, 161, 0.4);
  margin-top: 10px;
  animation: floatPay 3s ease-in-out infinite;
}

/* === 动画定义 === */
@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

@keyframes pulseBorder {
  0% {
    box-shadow: 0 0 15px rgba(108, 92, 231, 0.3);
    border-color: rgba(108, 92, 231, 0.4);
  }
  100% {
    box-shadow: 0 0 30px rgba(0, 206, 201, 0.6);
    border-color: rgba(0, 206, 201, 0.8);
  }
}

@keyframes floatPay {
  0% { transform: translateY(0px); }
  50% { transform: translateY(-5px); }
  100% { transform: translateY(0px); }
}

/* 全屏拖拽上传遮罩 */
.drag-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(10, 10, 15, 0.95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  z-index: 200;
  display: flex;
  justify-content: center;
  align-items: center;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.drag-overlay:not(.hidden) {
  display: flex;
}

.drag-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.drag-overlay-box {
  border: 3px dashed rgba(108, 92, 231, 0.6);
  background: rgba(255, 255, 255, 0.02);
  border-radius: 24px;
  padding: 60px 40px;
  max-width: 90%;
  width: 400px;
  box-shadow: 0 0 50px rgba(108, 92, 231, 0.2);
  transform: scale(0.9);
  transition: transform 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.drag-overlay.active .drag-overlay-box {
  transform: scale(1);
  border-color: var(--primary-glow);
}

/* === 设备名录面板 === */
.devices-panel {
  display: flex;
  flex-direction: column;
  max-height: 480px;
}

.devices-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  overflow-y: auto;
  flex-grow: 1;
  padding-right: 5px;
}

.device-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-color);
  transition: all 0.2s ease;
}

.device-item:hover {
  background: rgba(255, 255, 255, 0.04);
}

.device-item.current-device {
  border-color: rgba(108, 92, 231, 0.3);
  background: rgba(108, 92, 231, 0.05);
}

.device-icon {
  font-size: 20px;
}

.device-info {
  display: flex;
  flex-direction: column;
  gap: 2px;
  flex-grow: 1;
  overflow: hidden;
}

.device-name {
  font-size: 13px;
  font-weight: 500;
  text-overflow: ellipsis;
  overflow: hidden;
  white-space: nowrap;
}

.device-status {
  font-size: 11px;
  color: var(--text-secondary);
}

.device-status.online {
  color: var(--success-color);
}

.device-status.relay {
  color: var(--warning-color);
}

/* 目标选择器单项样式 */
.target-peer-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-color);
  cursor: pointer;
  transition: all 0.2s ease;
}

.target-peer-item:hover {
  background: rgba(255, 255, 255, 0.04);
}

.target-peer-item input[type="checkbox"] {
  width: 16px;
  height: 16px;
  cursor: pointer;
  accent-color: var(--primary-color);
}

/* 手机端 Tab 导航条 */
.mobile-tabs-nav {
  display: none;
  gap: 8px;
  margin-bottom: 16px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-color);
  padding: 4px;
  border-radius: 10px;
}

.tab-nav-btn {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--text-secondary);
  padding: 8px;
  font-size: 13px;
  font-weight: 600;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.tab-nav-btn.active {
  background: var(--primary-color);
  color: #fff;
  box-shadow: 0 4px 12px rgba(108, 92, 231, 0.3);
}

@media (max-width: 768px) {
  body {
    padding: 8px;
    align-items: flex-start;
  }

  .container {
    gap: 10px;
  }

  /* 扁平化设计覆盖：去除外框、阴影和背景，直接平铺在页面中 */
  .main-header.glass-panel {
    background: transparent;
    border: none;
    box-shadow: none;
    padding: 8px 4px;
    margin-bottom: 0;
  }

  .glass-panel.mobile-tab-content {
    background: transparent;
    border: none;
    box-shadow: none;
    padding: 8px 4px;
  }

  .mobile-tabs-nav {
    display: flex;
    margin-bottom: 10px;
    background: rgba(255, 255, 255, 0.05);
    border: none;
  }

  .mobile-tab-content {
    display: none !important;
  }
  
  .mobile-tab-content.active {
    display: flex !important;
  }
  
  /* 手机端高度自适应，防止出现任何全局滚动条 */
  .chat-panel {
    height: calc(100vh - 190px) !important;
    min-height: 320px;
  }
  
  .devices-panel, .transfer-panel {
    max-height: calc(100vh - 190px) !important;
  }

  .dropzone-area {
    padding: 30px 10px;
    border-color: rgba(255, 255, 255, 0.1);
    background: rgba(255, 255, 255, 0.01);
  }

  /* Apple iMessage 扁平消息气泡风格 */
  .bubble-me .chat-bubble {
    background: #007aff !important;
    color: #fff !important;
    border-radius: 16px !important;
    border-bottom-right-radius: 4px !important;
    box-shadow: none;
  }

  .bubble-peer .chat-bubble {
    background: rgba(255, 255, 255, 0.1) !important;
    color: var(--text-main) !important;
    border-radius: 16px !important;
    border-bottom-left-radius: 4px !important;
    border: none !important;
    box-shadow: none;
  }
  
  .chat-input-area textarea {
    border-radius: 20px;
    padding: 8px 14px;
    border-color: rgba(255, 255, 255, 0.15);
  }
}