/* ============================================================
   VISCA Pro Console - 样式表
   纯原生 CSS，零依赖。深色科技风主题，响应式适配手机/平板/桌面
   ============================================================ */

/* ---------- CSS变量 - 主题色 ---------- */
:root {
    --bg-primary: #0F0F1A;
    --bg-secondary: #1A1A2E;
    --bg-tertiary: #252540;
    --bg-elevated: #2A2A45;
    --fg-primary: #F0F0F5;
    --fg-secondary: #A0A0B8;
    --fg-muted: #6B6B85;
    --accent-blue: #1E88E5;
    --accent-cyan: #4CC2FF;
    --accent-glow: rgba(30, 136, 229, 0.4);
    --border-color: #2F2F4A;
    --border-strong: #3F3F5F;
    --success: #4CAF50;
    --warning: #FF9800;
    --danger: #F44336;
    --radius: 8px;
    --radius-sm: 4px;
    --radius-lg: 12px;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
    --shadow-strong: 0 8px 32px rgba(0, 0, 0, 0.6);
    --transition: 0.2s ease;
    --toolbar-h: 56px;
    --statusbar-h: 32px;
    --panel-w: clamp(280px, 28vw, 340px);
}

/* ---------- Reset & 基础 ---------- */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

/* 全局修复：HTML hidden 属性必须生效，防止 display:flex 等覆盖 */
[hidden] {
    display: none !important;
}

html, body {
    height: 100%;
    overflow: hidden;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", "PingFang SC", sans-serif;
    background: var(--bg-primary);
    color: var(--fg-primary);
    display: flex;
    flex-direction: column;
    font-size: 14px;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    user-select: none;
    -webkit-user-select: none;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
    color: inherit;
    font-size: inherit;
}

button:disabled {
    cursor: not-allowed;
    opacity: 0.4;
}

input, select {
    font-family: inherit;
    font-size: inherit;
    color: inherit;
}

/* ============================================================
   顶部工具栏
   ============================================================ */
.toolbar {
    min-height: var(--toolbar-h);
    height: auto;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    row-gap: 8px;
    justify-content: space-between;
    gap: 12px;
    padding: 8px 16px;
    background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
    border-bottom: 1px solid var(--border-color);
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.3);
    z-index: 20;
}

.toolbar-left {
    display: flex;
    align-items: center;
    gap: 16px;
    flex-shrink: 0;
}

.app-title {
    font-size: 18px;
    font-weight: 700;
    letter-spacing: 1px;
    color: var(--fg-primary);
}

.app-title .accent {
    color: var(--accent-cyan);
    text-shadow: 0 0 12px var(--accent-glow);
}

.connection-status {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 4px 10px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    font-size: 12px;
    color: var(--fg-secondary);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--danger);
    box-shadow: 0 0 8px currentColor;
    transition: background var(--transition);
}

.status-dot.connected {
    background: var(--success);
}

.status-dot.visca {
    background: var(--warning);
}

.status-dot.video {
    background: var(--accent-cyan);
}

.connection-status.connecting .status-dot {
    background: var(--warning);
    animation: pulse 1s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
}

.toolbar-center {
    display: flex;
    align-items: center;
    gap: 20px;
    flex: 1;
    justify-content: center;
    min-width: 0;
    flex-wrap: wrap;
    row-gap: 8px;
}

.device-group {
    display: flex;
    align-items: center;
    gap: 8px;
    min-width: 0;
    flex-shrink: 1;
}

.device-label {
    font-size: 12px;
    color: var(--fg-muted);
    flex-shrink: 0;
}

.device-buttons {
    display: flex;
    align-items: center;
    gap: 6px;
    flex-wrap: wrap;
    min-width: 0;
}

.device-empty {
    font-size: 12px;
    color: var(--fg-muted);
    font-style: italic;
}

/* 设备按钮 + 选中态高亮 */
.device-btn {
    min-height: 32px;
    padding: 4px 12px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--fg-secondary);
    font-size: 12px;
    white-space: nowrap;
    transition: all var(--transition);
}

.device-btn:hover {
    background: var(--bg-elevated);
    border-color: var(--accent-blue);
    color: var(--fg-primary);
}

.device-btn:active {
    transform: scale(0.96);
}

.device-btn.selected {
    background: var(--accent-blue);
    border-color: var(--accent-cyan);
    color: #fff;
    box-shadow: 0 0 12px var(--accent-glow);
}

.toolbar-right {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
}

.icon-btn {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--fg-secondary);
    font-size: 16px;
    font-weight: 600;
    transition: all var(--transition);
}

.icon-btn:hover {
    background: var(--bg-elevated);
    border-color: var(--accent-blue);
    color: var(--accent-cyan);
}

.icon-btn:active {
    transform: scale(0.94);
}

/* ============================================================
   主区域布局
   ============================================================ */
.main-area {
    flex: 1;
    display: flex;
    min-height: 0;
    overflow: hidden;
}

/* ---------- 视频预览区 ---------- */
.video-section {
    flex: 1;
    position: relative;
    background: #000;
    overflow: hidden;
    min-width: 0;
}

#videoCanvas {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: contain;
    background: #000;
}

/* R6: 视频区全屏（双击画面触发，区别于浏览器全屏） */
.video-section:fullscreen,
.video-section:-webkit-full-screen {
    width: 100vw;
    height: 100vh;
    background: #000;
}
.video-section:fullscreen #videoCanvas,
.video-section:-webkit-full-screen #videoCanvas {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

/* 悬浮叠加层 */
.video-overlay {
    position: absolute;
    top: 12px;
    left: 12px;
    right: 12px;
    pointer-events: none;
    z-index: 5;
}

.overlay-top {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 6px 12px;
    background: rgba(0, 0, 0, 0.5);
    border: 1px solid rgba(76, 194, 255, 0.3);
    border-radius: var(--radius-sm);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    font-size: 12px;
    color: var(--fg-primary);
    flex-wrap: wrap;
}

.overlay-item {
    white-space: nowrap;
}

.overlay-divider {
    width: 1px;
    height: 12px;
    background: var(--border-strong);
}

/* 空状态居中 */
.video-empty {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    color: var(--fg-muted);
    z-index: 4;
}

.empty-icon {
    color: var(--fg-muted);
    opacity: 0.5;
}

.empty-text {
    font-size: 16px;
    color: var(--fg-secondary);
}

.empty-hint {
    font-size: 12px;
    color: var(--fg-muted);
}

/* 加载状态 + 旋转动画 */
.video-loading {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 16px;
    background: rgba(15, 15, 26, 0.7);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    z-index: 6;
}

.spinner {
    width: 48px;
    height: 48px;
    border: 3px solid var(--border-color);
    border-top-color: var(--accent-cyan);
    border-radius: 50%;
    animation: spin 0.9s linear infinite;
}

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

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

/* ============================================================
   右侧控制面板
   ============================================================ */
.control-panel {
    width: var(--panel-w);
    flex-shrink: 0;
    background: var(--bg-secondary);
    border-left: 1px solid var(--border-color);
    overflow-y: auto;
    overflow-x: hidden;
    display: flex;
    flex-direction: column;
    position: relative;
    transition: transform 0.25s ease;
}

.control-panel::-webkit-scrollbar {
    width: 6px;
}

.control-panel::-webkit-scrollbar-track {
    background: transparent;
}

.control-panel::-webkit-scrollbar-thumb {
    background: var(--border-strong);
    border-radius: 3px;
}

.control-panel::-webkit-scrollbar-thumb:hover {
    background: var(--fg-muted);
}

/* 移动端抽屉把手（桌面隐藏） */
.drawer-handle {
    display: none;
}

/* ---------- 可折叠分组 ---------- */
.control-group {
    border-bottom: 1px solid var(--border-color);
}

.group-header {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    background: var(--bg-secondary);
    color: var(--fg-primary);
    font-size: 13px;
    font-weight: 600;
    text-align: left;
    transition: background var(--transition);
}

.group-header:hover {
    background: var(--bg-tertiary);
}

.group-title {
    letter-spacing: 0.5px;
}

.group-toggle {
    color: var(--fg-muted);
    transition: transform var(--transition);
    font-size: 12px;
}

.control-group.collapsed .group-toggle {
    transform: rotate(-90deg);
}

/* 折叠动画：max-height 过渡 */
.group-body {
    max-height: 600px;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
    padding: 12px 16px 16px;
}

.control-group.collapsed .group-body {
    max-height: 0;
    padding-top: 0;
    padding-bottom: 0;
}

/* ---------- 十字方向键 ---------- */
.dpad {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-template-rows: repeat(3, 1fr);
    gap: 6px;
    width: min(180px, 100%);
    max-width: 100%;
    margin: 0 auto 12px;
    aspect-ratio: 1;
    box-sizing: border-box;
}

.dpad-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    color: var(--fg-secondary);
    font-size: 16px;
    font-weight: 600;
    transition: all var(--transition);
    min-width: 44px;
    min-height: 44px;
}

.dpad-btn:hover {
    background: var(--bg-elevated);
    border-color: var(--accent-blue);
    color: var(--accent-cyan);
}

.dpad-btn:active {
    background: var(--accent-blue);
    color: #fff;
    transform: scale(0.94);
    box-shadow: 0 0 16px var(--accent-glow);
}

/* R3: 8方向九宫格 grid 位置 */
.dpad-upleft    { grid-column: 1; grid-row: 1; }
.dpad-up        { grid-column: 2; grid-row: 1; }
.dpad-upright   { grid-column: 3; grid-row: 1; }
.dpad-left      { grid-column: 1; grid-row: 2; }
.dpad-home      { grid-column: 2; grid-row: 2; font-size: 18px; }
.dpad-right     { grid-column: 3; grid-row: 2; }
.dpad-downleft  { grid-column: 1; grid-row: 3; }
.dpad-down      { grid-column: 2; grid-row: 3; }
.dpad-downright { grid-column: 3; grid-row: 3; }

/* ---------- 滑块行 ---------- */
.slider-row {
    display: flex;
    align-items: center;
    gap: 10px;
    margin: 8px 0;
}

.slider-label {
    font-size: 12px;
    color: var(--fg-secondary);
    min-width: 32px;
    flex-shrink: 0;
}

.slider-value {
    font-size: 12px;
    color: var(--accent-cyan);
    min-width: 28px;
    text-align: right;
    font-variant-numeric: tabular-nums;
}

/* 自定义滑块 - 深色主题 */
.slider {
    -webkit-appearance: none;
    appearance: none;
    flex: 1;
    height: 6px;
    background: var(--bg-tertiary);
    border-radius: 3px;
    outline: none;
    border: 1px solid var(--border-color);
}

.slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--accent-blue);
    border: 2px solid var(--accent-cyan);
    cursor: pointer;
    transition: all var(--transition);
    box-shadow: 0 0 8px var(--accent-glow);
}

.slider::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

.slider::-moz-range-thumb {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--accent-blue);
    border: 2px solid var(--accent-cyan);
    cursor: pointer;
    box-shadow: 0 0 8px var(--accent-glow);
}

.slider::-moz-range-track {
    height: 6px;
    background: var(--bg-tertiary);
    border-radius: 3px;
    border: 1px solid var(--border-color);
}

/* ---------- 通用按钮 ---------- */
.button-row {
    display: flex;
    gap: 8px;
    margin: 8px 0;
}

.ctrl-btn {
    flex: 1;
    min-height: 40px;
    padding: 8px 12px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--fg-primary);
    font-size: 13px;
    font-weight: 500;
    transition: all var(--transition);
}

.ctrl-btn:hover:not(:disabled) {
    background: var(--bg-elevated);
    border-color: var(--accent-blue);
    color: var(--accent-cyan);
}

.ctrl-btn:active:not(:disabled) {
    transform: scale(0.97);
    background: var(--accent-blue);
    color: #fff;
}

/* ---------- 变倍相关 ---------- */
.zoom-display {
    font-size: 12px;
    color: var(--fg-secondary);
    text-align: center;
    margin-bottom: 8px;
    padding: 6px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
}

.zoom-display strong {
    color: var(--accent-cyan);
    font-size: 14px;
}

.zoom-shortcuts {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 6px;
    margin-top: 8px;
}

.shortcut-btn {
    min-height: 36px;
    padding: 4px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--fg-secondary);
    font-size: 12px;
    font-weight: 600;
    transition: all var(--transition);
}

.shortcut-btn:hover {
    background: var(--bg-elevated);
    border-color: var(--accent-blue);
    color: var(--accent-cyan);
}

.shortcut-btn:active {
    transform: scale(0.94);
    background: var(--accent-blue);
    color: #fff;
}

/* ---------- 聚焦模式 ---------- */
.focus-modes {
    display: flex;
    gap: 6px;
    margin-top: 8px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    padding: 3px;
}

.mode-btn {
    flex: 1;
    min-height: 36px;
    padding: 6px;
    background: transparent;
    border-radius: var(--radius-sm);
    color: var(--fg-secondary);
    font-size: 12px;
    transition: all var(--transition);
}

.mode-btn:hover {
    color: var(--fg-primary);
}

.mode-btn.active {
    background: var(--accent-blue);
    color: #fff;
    box-shadow: 0 0 8px var(--accent-glow);
}

/* ---------- 预设位 ---------- */
.hint-text {
    font-size: 11px;
    color: var(--fg-muted);
    margin-bottom: 8px;
    text-align: center;
}

/* R3: 预设位 ID 输入 + 操作按钮组 */
.preset-id-group {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 10px;
    padding: 8px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
}
.preset-id-label {
    font-size: 12px;
    color: var(--fg-muted);
    flex-shrink: 0;
}
.preset-id-input {
    width: 56px;
    min-height: 30px;
    padding: 2px 6px;
    background: var(--bg-primary);
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-sm);
    color: var(--fg-primary);
    font-size: 13px;
    text-align: center;
    flex-shrink: 0;
}
.preset-id-input:focus {
    outline: none;
    border-color: var(--accent-blue);
    box-shadow: 0 0 6px var(--accent-glow);
}
.preset-id-btn {
    min-height: 30px;
    padding: 2px 10px;
    background: var(--bg-elevated);
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-sm);
    color: var(--fg-secondary);
    font-size: 12px;
    transition: all var(--transition);
    flex: 1;
    min-width: 52px;
}
.preset-id-btn:hover {
    background: var(--accent-blue);
    border-color: var(--accent-cyan);
    color: #fff;
}
.preset-id-btn.danger:hover {
    background: var(--danger);
    border-color: var(--danger);
}
.preset-id-btn:active {
    transform: scale(0.95);
}

.preset-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(40px, 1fr));
    gap: 8px;
}

.preset-btn {
    min-height: 48px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--fg-primary);
    font-size: 18px;
    font-weight: 700;
    transition: all var(--transition);
}

.preset-btn:hover {
    background: var(--bg-elevated);
    border-color: var(--accent-blue);
    color: var(--accent-cyan);
}

.preset-btn:active {
    transform: scale(0.95);
    background: var(--accent-blue);
    color: #fff;
}

.preset-btn.has-preset {
    border-color: var(--accent-blue);
    color: var(--accent-cyan);
}

/* ---------- 图像设置 ---------- */
.checkbox-row {
    display: flex;
    gap: 16px;
    margin: 8px 0 12px;
    flex-wrap: wrap;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    color: var(--fg-secondary);
    cursor: pointer;
    min-height: 44px;
}

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

.select-row {
    display: flex;
    align-items: center;
    gap: 10px;
    margin: 8px 0;
}

.select-label {
    font-size: 12px;
    color: var(--fg-secondary);
    min-width: 48px;
    flex-shrink: 0;
}

.select {
    flex: 1;
    min-height: 40px;
    padding: 6px 10px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--fg-primary);
    font-size: 13px;
    cursor: pointer;
    transition: border-color var(--transition);
}

.select:hover {
    border-color: var(--accent-blue);
}

.select:focus {
    outline: none;
    border-color: var(--accent-cyan);
}

.select option {
    background: var(--bg-secondary);
    color: var(--fg-primary);
}

/* ---------- 设置行（方向反转等） ---------- */
.setting-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 4px 0;
}

.setting-label {
    color: var(--fg-secondary);
    font-size: 12px;
}

.toggle-group {
    display: flex;
    gap: 4px;
}

/* ---------- Toggle 按钮 ---------- */
.toggle-btn {
    background: var(--bg-secondary, #1E1E2E);
    border: 1px solid var(--border-color, #2A2A3F);
    color: var(--fg-secondary, #8080A0);
    padding: 4px 10px;
    border-radius: 4px;
    font-size: 11px;
    cursor: pointer;
    transition: all 0.15s ease;
}

.toggle-btn:hover {
    border-color: var(--accent-blue, #1E88E5);
    color: var(--fg-primary);
}

.toggle-btn.active {
    background: var(--accent-blue, #1E88E5);
    border-color: var(--accent-blue, #1E88E5);
    color: white;
    box-shadow: 0 0 8px rgba(30, 136, 229, 0.4);
}

/* ---------- 协议选择按钮 ---------- */
.protocol-selector {
    display: flex;
    gap: 2px;
    margin-left: 8px;
}

.protocol-group {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-left: 8px;
    flex-shrink: 1;
    min-width: 0;
}

.protocol-buttons {
    display: flex;
    gap: 2px;
}

.protocol-btn {
    background: var(--bg-secondary, #1E1E2E);
    border: 1px solid var(--border-color, #2A2A3F);
    color: var(--fg-secondary, #8080A0);
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 11px;
    cursor: pointer;
    transition: all 0.15s ease;
}

.protocol-btn:hover {
    border-color: var(--accent-blue, #1E88E5);
}

.protocol-btn.active {
    background: var(--accent-cyan, #4CC2FF);
    border-color: var(--accent-cyan, #4CC2FF);
    color: #0F0F1A;
    font-weight: 600;
}

/* ============================================================
   底部状态栏（固定底部）
   ============================================================ */
.status-bar {
    height: var(--statusbar-h);
    flex-shrink: 0;
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 0 16px;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    font-size: 12px;
    color: var(--fg-secondary);
    z-index: 15;
}

.status-msg {
    color: var(--accent-cyan);
    font-weight: 500;
    flex-shrink: 0;
}

.status-log {
    flex: 1;
    color: var(--fg-muted);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    font-family: "Consolas", "Menlo", monospace;
}

.status-info {
    flex-shrink: 0;
    color: var(--fg-secondary);
    font-variant-numeric: tabular-nums;
}

/* ============================================================
   关于弹窗
   ============================================================ */
.modal {
    position: fixed;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    z-index: 100;
}

.modal[hidden] {
    display: none;
}

.modal-content {
    background: var(--bg-secondary);
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-lg);
    padding: 24px;
    max-width: 380px;
    width: 90%;
    box-shadow: var(--shadow-strong);
    text-align: center;
}

.modal-content h2 {
    color: var(--accent-cyan);
    margin-bottom: 12px;
    font-size: 18px;
}

.modal-content p {
    color: var(--fg-secondary);
    margin-bottom: 8px;
    font-size: 13px;
}

.modal-version {
    color: var(--fg-muted) !important;
    font-size: 12px !important;
    margin-top: 16px !important;
}

.modal-content .ctrl-btn {
    margin-top: 16px;
    max-width: 120px;
    margin-left: auto;
    margin-right: auto;
}

/* ============================================================
   响应式 - 移动端 (max-width: 768px)
   控制面板变为底部可滑动抽屉，方向键变大适合触摸
   ============================================================ */
@media (max-width: 768px) and (orientation: portrait) {
    :root {
        --toolbar-h: 52px;
        --statusbar-h: 28px;
        --safe-top: env(safe-area-inset-top, 0px);
        --safe-bottom: env(safe-area-inset-bottom, 0px);
    }

    /* 安全区适配：刘海屏顶部 + home indicator 底部 */
    .toolbar {
        padding: 8px 10px;
        padding-top: calc(8px + var(--safe-top));
        gap: 8px;
        flex-wrap: wrap;
        height: auto;
        min-height: var(--toolbar-h);
    }

    .control-panel {
        padding-bottom: var(--safe-bottom);
    }

    .status-bar {
        padding-bottom: var(--safe-bottom);
    }

    .toolbar-left {
        gap: 10px;
    }

    .app-title {
        font-size: 16px;
    }

    .toolbar-center {
        order: 3;
        flex-basis: 100%;
        justify-content: flex-start;
        gap: 12px;
        overflow-x: auto;
        padding-bottom: 4px;
    }

    .toolbar-center::-webkit-scrollbar {
        display: none;
    }

    .device-label {
        font-size: 11px;
    }

    .device-btn {
        min-height: 30px;
        padding: 3px 10px;
        font-size: 11px;
    }

    .icon-btn {
        width: 34px;
        height: 34px;
    }

    /* 主区域变为纵向：视频在上，面板在下（不再用 absolute 遮挡） */
    .main-area {
        flex-direction: column;
        position: relative;
    }

    .video-section {
        flex: 1 1 45%;
        min-height: 0;
        border-bottom: 1px solid var(--border-color);
    }

    .overlay-top {
        font-size: 11px;
        gap: 8px;
    }

    /* 控制面板变为底部抽屉，用 flex 占下半屏，不再 absolute 遮挡 */
    .control-panel {
        width: 100%;
        flex: 0 0 55%;
        height: auto;
        max-height: none;
        border-left: none;
        border-top: 1px solid var(--border-color);
        border-radius: 0;
        position: relative;
        bottom: auto;
        left: auto;
        right: auto;
        z-index: 10;
        box-shadow: 0 -8px 32px rgba(0, 0, 0, 0.5);
        display: flex;
        flex-direction: column;
    }

    .control-panel.fully-hidden {
        display: none;
    }

    .control-panel.expanded {
        flex: 0 0 85%;
    }

    /* 拖拽中禁用过渡，避免跟手延迟 */
    .control-panel.dragging {
        transition: none;
    }

    /* R8: 手机端选项卡栏（水平滚动） */
    .panel-tabs {
        display: flex;
        flex-wrap: nowrap;
        overflow-x: auto;
        gap: 0;
        flex-shrink: 0;
        background: var(--bg-secondary);
        border-bottom: 1px solid var(--border-color);
        position: sticky;
        top: 0;
        z-index: 5;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
    }
    .panel-tabs::-webkit-scrollbar {
        display: none;
    }
    .panel-tabs .panel-tab {
        flex: 0 0 auto;
        padding: 10px 14px;
        background: transparent;
        border: none;
        border-bottom: 2px solid transparent;
        color: var(--fg-secondary);
        font-size: 13px;
        font-weight: 500;
        white-space: nowrap;
        transition: all var(--transition);
        cursor: pointer;
    }
    .panel-tabs .panel-tab:hover {
        color: var(--fg-primary);
        background: var(--bg-tertiary);
    }
    .panel-tabs .panel-tab.active {
        color: var(--accent-cyan);
        border-bottom-color: var(--accent-cyan);
        background: var(--bg-tertiary);
        font-weight: 600;
    }

    /* R8: 手机端隐藏手风琴头（用tab替代） */
    .control-group > .group-header {
        display: none;
    }
    /* R8: 手机端tab模式 - 仅显示当前激活的group，其他隐藏 */
    .control-group {
        display: none;
    }
    .control-group.tab-active {
        display: block;
        overflow-y: auto;
        flex: 1;
        padding: 12px;
    }
    /* tab模式下不再有 collapsed 概念，强制 body 显示 */
    .control-group.tab-active > .group-body {
        display: block;
    }

    /* 抽屉把手显示 */
    .drawer-handle {
        display: flex;
        align-items: center;
        justify-content: center;
        padding: 8px 0 4px;
        cursor: grab;
        flex-shrink: 0;
        position: sticky;
        top: 0;
        background: var(--bg-secondary);
        z-index: 2;
    }

    .drawer-handle:active {
        cursor: grabbing;
    }

    .handle-bar {
        width: 40px;
        height: 4px;
        background: var(--border-strong);
        border-radius: 2px;
    }

    /* 方向键变大适合触摸 */
    .dpad {
        width: 220px;
        gap: 8px;
    }

    .dpad-btn {
        min-width: 56px;
        min-height: 56px;
        font-size: 20px;
    }

    .dpad-home {
        font-size: 22px;
    }

    /* 触摸友好：增大按钮尺寸 */
    .ctrl-btn {
        min-height: 44px;
        font-size: 14px;
    }

    .shortcut-btn {
        min-height: 40px;
    }

    .preset-btn {
        min-height: 52px;
        font-size: 20px;
    }

    /* 状态栏紧凑 */
    .status-bar {
        padding: 0 10px;
        gap: 8px;
        font-size: 11px;
    }

    .status-log {
        font-size: 10px;
    }

    /* 模态框适配 */
    .modal-content {
        padding: 20px;
    }
}

/* ---------- 平板 (769px - 1024px) 缩小控制面板 ---------- */
@media (min-width: 769px) and (max-width: 1024px) {
    :root {
        --panel-w: 300px;
    }
}

/* ============================================================
   v2 新增样式：ID输入框 / 分辨率 / 面板隐藏 / 广告 / 预置位20
   ============================================================ */

/* ---------- 摄像机ID输入框 ---------- */
.id-group {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-left: 8px;
    flex-shrink: 1;
    min-width: 0;
}

.id-buttons {
    display: flex;
    align-items: center;
    gap: 4px;
    flex-wrap: wrap;
}

/* ID 按钮（1-7） */
.id-btn {
    min-width: 28px;
    height: 28px;
    padding: 0 6px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--fg-secondary);
    font-size: 13px;
    font-weight: 600;
    font-variant-numeric: tabular-nums;
    transition: all var(--transition);
}
.id-btn:hover:not(:disabled) {
    border-color: var(--accent-blue);
    color: var(--accent-cyan);
}
/* 探测有响应的地址：高亮绿色 */
.id-btn.probed {
    background: var(--success);
    border-color: var(--success);
    color: #fff;
    box-shadow: 0 0 8px rgba(76, 175, 80, 0.5);
}
.id-btn.probed:hover:not(:disabled) {
    background: #5cbf60;
    border-color: #5cbf60;
}
/* 当前选中的地址：高亮蓝色 */
.id-btn.selected {
    background: var(--accent-blue);
    border-color: var(--accent-cyan);
    color: #fff;
    box-shadow: 0 0 12px var(--accent-glow);
}
/* 未响应的地址：禁用 */
.id-btn:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}
/* 探测前默认状态：可点击但无高亮 */

/* "查"按钮 */
.id-probe-btn {
    min-width: 32px;
    height: 28px;
    padding: 0 8px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--fg-secondary);
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
}
.id-probe-btn:hover {
    border-color: var(--accent-blue);
    color: var(--accent-cyan);
}
.id-probe-btn:active {
    transform: scale(0.94);
}
.id-probe-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}
.id-probe-btn.probing {
    background: var(--warning);
    border-color: var(--warning);
    color: #fff;
    animation: pulse 1s ease-in-out infinite;
}

/* R8: ID按钮探测动效 */
/* 正在查询中：黄色脉冲 */
.id-btn.probing {
    background: var(--warning);
    border-color: var(--warning);
    color: #fff;
    animation: idPulse 0.6s ease-in-out infinite;
    transform: scale(1.08);
    box-shadow: 0 0 12px rgba(255, 152, 0, 0.6);
    z-index: 2;
}
@keyframes idPulse {
    0%, 100% { box-shadow: 0 0 8px rgba(255, 152, 0, 0.4); transform: scale(1.05); }
    50%      { box-shadow: 0 0 18px rgba(255, 152, 0, 0.9); transform: scale(1.12); }
}

/* 有响应：一次性闪光特效（绿色放射） */
.id-btn.flash {
    animation: idFlash 0.8s ease-out;
}
@keyframes idFlash {
    0% {
        background: #fff;
        box-shadow: 0 0 0 0 rgba(76, 175, 80, 0.9), 0 0 30px 10px rgba(76, 175, 80, 0.8);
        transform: scale(1.4);
    }
    40% {
        background: var(--success);
        box-shadow: 0 0 0 8px rgba(76, 175, 80, 0.5), 0 0 20px 4px rgba(76, 175, 80, 0.6);
        transform: scale(1.15);
    }
    100% {
        background: var(--success);
        box-shadow: 0 0 8px rgba(76, 175, 80, 0.5);
        transform: scale(1);
    }
}

/* 无响应：熄灭动效（暗淡下沉） */
.id-btn.fadeout {
    animation: idFadeOut 0.5s ease-out forwards;
}
@keyframes idFadeOut {
    0%   { opacity: 1; transform: scale(1); }
    50%  { opacity: 0.5; transform: scale(0.92); background: var(--danger); }
    100% { opacity: 0.3; transform: scale(1); background: var(--bg-tertiary); }
}

/* ---------- 分辨率选择 ---------- */
.resolution-group {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-left: 8px;
    flex-shrink: 1;
    min-width: 0;
}
.resolution-buttons {
    display: flex;
    gap: 2px;
}
.resolution-btn {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--fg-secondary);
    padding: 4px 10px;
    border-radius: var(--radius-sm);
    font-size: 11px;
    cursor: pointer;
    transition: all 0.15s ease;
    min-height: 28px;
}
.resolution-btn:hover {
    border-color: var(--accent-blue);
    color: var(--fg-primary);
}
.resolution-btn.active {
    background: var(--accent-cyan);
    border-color: var(--accent-cyan);
    color: #0F0F1A;
    font-weight: 600;
}
.resolution-btn:active {
    transform: scale(0.95);
}

/* ---------- 面板固定按钮 ---------- */
.panel-pin-btn {
    position: absolute;
    top: 8px;
    right: 8px;
    width: 28px;
    height: 28px;
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--fg-secondary);
    font-size: 14px;
    cursor: pointer;
    z-index: 5;
    transition: all var(--transition);
    line-height: 1;
}
.panel-pin-btn:hover {
    border-color: var(--accent-blue);
    color: var(--accent-cyan);
}
.panel-pin-btn.active {
    border-color: var(--accent-blue);
    color: var(--accent-cyan);
}

/* ---------- 面板自动隐藏 / 全隐藏 ---------- */
.control-panel.auto-hide {
    transform: translateX(calc(100% - 8px));
    transition: transform 0.25s ease;
}
.control-panel.auto-hide.hover-show {
    transform: translateX(0);
}
.control-panel.fully-hidden {
    display: none;
}
/* 自动隐藏模式下保留边缘悬停触发区 */
.control-panel.auto-hide::after {
    content: '';
    position: absolute;
    top: 0;
    right: 100%;
    width: 12px;
    height: 100%;
    background: transparent;
}

/* ---------- 预置位20个布局(自适应列数) ---------- */
.preset-grid {
    grid-template-columns: repeat(auto-fill, minmax(40px, 1fr));
    gap: 6px;
}
.preset-btn {
    min-height: 36px;
    font-size: 14px;
    padding: 4px 2px;
}

@media (max-width: 768px) {
    .preset-grid {
        grid-template-columns: repeat(auto-fill, minmax(44px, 1fr));
    }
    .preset-btn {
        min-height: 40px;
        font-size: 15px;
    }
}

/* ---------- 首屏广告悬浮窗 ---------- */
.ad-overlay {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 9000;
    pointer-events: auto;
    animation: adFadeIn 0.4s ease;
}
.ad-overlay.closed {
    display: none;
}
.ad-card {
    position: relative;
    width: 320px;
    background: linear-gradient(135deg, var(--bg-elevated), var(--bg-secondary));
    border: 1px solid var(--accent-blue);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-strong);
    padding: 24px 20px 20px;
}
.ad-close {
    position: absolute;
    top: 8px;
    right: 8px;
    width: 28px;
    height: 28px;
    background: transparent;
    border: none;
    color: var(--fg-muted);
    font-size: 22px;
    line-height: 1;
    cursor: pointer;
    border-radius: 50%;
    transition: all var(--transition);
}
.ad-close:hover {
    background: var(--danger);
    color: #fff;
}
.ad-content {
    text-align: center;
}
.ad-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--accent-cyan);
    margin-bottom: 8px;
}
.ad-desc {
    font-size: 13px;
    color: var(--fg-secondary);
    margin-bottom: 4px;
}
.ad-sub {
    font-size: 12px;
    color: var(--fg-muted);
    margin-bottom: 16px;
}
/* R1: 直接显示二维码 div，支持横向长图自适应 */
.ad-qr-direct {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    max-width: 100%;
    margin: 0 auto;
    overflow: hidden;
    border-radius: var(--radius);
    background: #fff;
    padding: 8px;
    box-sizing: border-box;
}
.ad-qr-img {
    display: block;
    max-width: 100%;
    width: auto;
    height: auto;
    max-height: 280px;
    object-fit: contain;
}
@keyframes adFadeIn {
    from { opacity: 0; transform: translate(-50%, -48%); }
    to { opacity: 1; transform: translate(-50%, -50%); }
}

/* ---------- 顶部工具栏紧凑适配(新增ID/分辨率组) ---------- */
@media (max-width: 1024px) {
    .id-group, .resolution-group {
        margin-left: 4px;
    }
    .id-btn { min-width: 24px; padding: 0 4px; font-size: 12px; }
    .id-probe-btn { padding: 0 6px; font-size: 11px; }
}
@media (max-width: 768px) {
    .id-group .device-label,
    .resolution-group .device-label {
        display: none;
    }
    .ad-card {
        width: 280px;
    }
}

/* ---------- 大桌面优化 ---------- */
@media (min-width: 1440px) {
    :root {
        --panel-w: clamp(320px, 30vw, 400px);
    }
}

/* ---------- 超宽屏(21:9)优化：限制视频区最大宽度，避免画面拉伸过度 ---------- */
@media (min-aspect-ratio: 21/9) {
    .video-section {
        max-width: calc(100vw - var(--panel-w));
    }
}

/* ---------- 竖屏平板/手机优化：工具栏允许换行，面板转底部抽屉 ---------- */
@media (max-width: 768px) and (orientation: portrait) {
    .toolbar {
        height: auto;
        min-height: var(--toolbar-h);
        flex-wrap: wrap;
        padding: 8px 12px;
        row-gap: 8px;
    }
    .toolbar-center {
        order: 3;
        width: 100%;
        justify-content: flex-start;
    }
}

/* ---------- 竖屏手机优化 ---------- */
@media (max-width: 480px) and (orientation: portrait) {
    .overlay-top {
        font-size: 10px;
        padding: 4px 8px;
        gap: 6px;
    }

    .overlay-divider {
        display: none;
    }

    /* 小屏面板占比略减，给视频更多空间 */
    .control-panel {
        flex: 0 0 50%;
    }

    .control-panel.expanded {
        flex: 0 0 80%;
    }

    .dpad {
        width: min(200px, 75vw);
    }
}

/* ============================================================
   v3 新增：Toast 提示系统 + 小屏错位修复
   ============================================================ */

/* ---------- Toast 容器 ---------- */
.toast-container {
    position: fixed;
    top: 60px;
    right: 16px;
    z-index: 10000;
    display: flex;
    flex-direction: column;
    gap: 8px;
    pointer-events: none;
    max-width: 320px;
}

/* ---------- Toast 单条 ---------- */
.toast {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    background: var(--bg-elevated);
    border: 1px solid var(--border-color);
    border-left: 4px solid var(--accent-blue);
    border-radius: var(--radius);
    box-shadow: var(--shadow-strong);
    color: var(--fg-primary);
    font-size: 13px;
    font-weight: 500;
    pointer-events: auto;
    animation: toastSlideIn 0.3s cubic-bezier(0.2, 0.8, 0.2, 1);
    backdrop-filter: blur(8px);
}
.toast.success { border-left-color: var(--success, #4ade80); }
.toast.error   { border-left-color: var(--danger, #ef4444); }
.toast.info    { border-left-color: var(--accent-cyan, #06b6d4); }
.toast.warn    { border-left-color: var(--warning, #fbbf24); }

.toast.removing {
    animation: toastSlideOut 0.3s ease forwards;
}
.toast-icon {
    font-size: 16px;
    line-height: 1;
    flex-shrink: 0;
}
@keyframes toastSlideIn {
    from { opacity: 0; transform: translateX(120%); }
    to   { opacity: 1; transform: translateX(0); }
}
@keyframes toastSlideOut {
    from { opacity: 1; transform: translateX(0); }
    to   { opacity: 0; transform: translateX(120%); }
}

/* ---------- <360px 超小屏紧凑优化 ---------- */
@media (max-width: 360px) {
    .toolbar-center {
        gap: 8px;
    }
    .device-group,
    .protocol-group,
    .id-group,
    .resolution-group {
        gap: 4px;
        margin-left: 2px;
        margin-right: 2px;
    }
    .id-btn {
        min-width: 22px;
        padding: 0 3px;
        font-size: 11px;
    }
    .id-probe-btn {
        padding: 0 5px;
        font-size: 10px;
    }
    .resolution-select {
        font-size: 11px;
        padding: 0 4px;
    }
    .device-label {
        font-size: 11px;
    }
    .toast-container {
        top: 56px;
        right: 8px;
        left: 8px;
        max-width: none;
    }
    .toast {
        font-size: 12px;
        padding: 8px 12px;
    }
    .dpad {
        width: 180px;
    }
    .preset-btn {
        min-height: 34px;
        font-size: 13px;
    }
}

/* ---------- dpad 防溢出 ---------- */
.dpad {
    max-width: 100%;
    box-sizing: border-box;
}
.dpad-btn {
    min-width: 0;
}