/* ========================================
   大屏管理系统 - 管理后台样式
   ======================================== */

:root {
    /* 色彩系统 */
    --bg-primary: #0f0f1a;
    --bg-secondary: #1a1a2e;
    --bg-tertiary: #252542;
    --bg-card: #1e1e35;

    --text-primary: #ffffff;
    --text-secondary: #a0a0b8;
    --text-muted: #6b6b82;

    --accent-primary: #6366f1;
    --accent-primary-hover: #818cf8;
    --accent-success: #10b981;
    --accent-warning: #f59e0b;
    --accent-danger: #ef4444;

    --border-color: #2a2a45;
    --shadow-color: rgba(0, 0, 0, 0.3);

    /* 间距 */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;

    /* 圆角 */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;

    /* 过渡 */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.25s ease;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
}

/* ========================================
   布局
   ======================================== */
.app {
    display: flex;
    min-height: 100vh;
}

/* 侧边栏 */
.sidebar {
    width: 240px;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
}

.logo {
    padding: var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
}

.logo-icon {
    font-size: 1.8rem;
}

.logo-text {
    font-size: 1.2rem;
    font-weight: 600;
    background: linear-gradient(135deg, var(--accent-primary), #a855f7);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav {
    padding: var(--spacing-md);
    flex: 1;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition-fast);
    margin-bottom: var(--spacing-xs);
}

.nav-item:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.nav-item.active {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.2), rgba(168, 85, 247, 0.2));
    color: var(--accent-primary);
    border: 1px solid rgba(99, 102, 241, 0.3);
}

.nav-icon {
    font-size: 1.2rem;
}

/* 主内容区 */
.main-content {
    flex: 1;
    margin-left: 240px;
    padding: var(--spacing-xl);
    min-height: 100vh;
}

/* 页面 */
.page {
    display: none;
}

.page.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xl);
}

.page-header h1 {
    font-size: 1.8rem;
    font-weight: 600;
}

/* ========================================
   按钮
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    border: none;
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition-fast);
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-primary), #a855f7);
    color: white;
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--accent-primary-hover), #c084fc);
    transform: translateY(-1px);
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
}

.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background: var(--border-color);
}

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

.btn-danger:hover {
    background: #dc2626;
}

.btn-sm {
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: 0.8rem;
}

/* ========================================
   上传区域
   ======================================== */
.upload-area {
    margin-bottom: var(--spacing-xl);
}

.upload-dropzone {
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl) * 2;
    text-align: center;
    cursor: pointer;
    transition: var(--transition-normal);
    background: var(--bg-card);
}

.upload-dropzone:hover,
.upload-dropzone.dragover {
    border-color: var(--accent-primary);
    background: rgba(99, 102, 241, 0.05);
}

.upload-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.upload-dropzone p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
}

.text-muted {
    color: var(--text-muted) !important;
    font-size: 0.85rem;
}

/* ========================================
   内容网格
   ======================================== */
.content-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: var(--spacing-lg);
}

.content-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border-color);
    transition: var(--transition-normal);
}

.content-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 30px var(--shadow-color);
    border-color: var(--accent-primary);
}

.content-preview {
    aspect-ratio: 16/9;
    background: var(--bg-tertiary);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.content-preview img,
.content-preview video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.content-info {
    padding: var(--spacing-md);
}

.content-name {
    font-weight: 500;
    margin-bottom: var(--spacing-xs);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.content-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.8rem;
    color: var(--text-muted);
}

.content-type {
    padding: 2px 8px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
}

.content-type.image {
    color: var(--accent-success);
}

.content-type.video {
    color: var(--accent-warning);
}

.content-actions {
    display: flex;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md) var(--spacing-md);
}

/* ========================================
   内容搜索和筛选工具栏
   ======================================== */
.content-toolbar {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
    align-items: center;
}

.search-box {
    flex: 1;
    min-width: 200px;
    max-width: 400px;
}

.search-box input {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 0.9rem;
    transition: var(--transition-fast);
}

.search-box input:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}

/* ========================================
   Game Management UI Styles
   ======================================== */

.header-actions {
    display: flex;
    gap: var(--spacing-md);
}

.page-subheader {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
    padding-bottom: var(--spacing-md);
}

.page-subheader h2 {
    font-size: 1.2rem;
    margin: 0;
}

.btn-link {
    background: none;
    border: none;
    color: var(--accent-primary);
    padding: 0;
    cursor: pointer;
}

.btn-link:hover {
    text-decoration: underline;
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.form-row {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.form-row .form-group {
    margin-bottom: 0;
}

.col-6 {
    flex: 0 0 calc(50% - var(--spacing-md) / 2);
}

.form-actions {
    margin-top: var(--spacing-lg);
    display: flex;
    gap: var(--spacing-md);
}

.form-actions.align-right {
    justify-content: flex-end;
}

/* Prize Manager Layout */
.prize-manager-layout {
    display: flex;
    gap: var(--spacing-lg);
    height: 500px;
}

.prize-list-section {
    flex: 1;
    display: flex;
    flex-direction: column;
    border-right: 1px solid var(--border-color);
    padding-right: var(--spacing-lg);
}

.prize-editor-section {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
}

.prize-list {
    flex: 1;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.prize-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm);
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    cursor: pointer;
    border: 1px solid transparent;
}

.prize-item:hover {
    border-color: var(--accent-primary);
}

.prize-item-info {
    flex: 1;
}

.prize-item-name {
    font-weight: 500;
}

.prize-item-meta {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.prize-item-actions {
    display: flex;
    gap: 4px;
}

/* Stats Dashboard */
.stats-overview {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.stat-card {
    background: var(--bg-tertiary);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    text-align: center;
}

.stat-value {
    font-size: 2rem;
    font-weight: bold;
    color: var(--accent-primary);
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.stats-tabs {
    display: flex;
    gap: var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
    margin-bottom: var(--spacing-md);
}

.stats-tab {
    background: none;
    border: none;
    color: var(--text-secondary);
    padding: var(--spacing-sm) var(--spacing-md);
    cursor: pointer;
    border-bottom: 2px solid transparent;
}

.stats-tab.active {
    color: var(--text-primary);
    border-bottom-color: var(--accent-primary);
}

.stats-content {
    height: 400px;
    overflow-y: auto;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
}

.data-table th,
.data-table td {
    padding: var(--spacing-sm);
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.data-table th {
    color: var(--text-muted);
    font-weight: 500;
    font-size: 0.9rem;
}

.data-table td {
    font-size: 0.9rem;
}

.filter-group {
    display: flex;
    gap: var(--spacing-sm);
}

.content-tag {
    display: inline-block;
    padding: 2px 8px;
    background: var(--bg-tertiary);
    border-radius: 12px;
    font-size: 0.7rem;
    color: var(--text-muted);
    margin-right: 4px;
}

.content-category {
    font-size: 0.75rem;
    color: var(--accent-primary);
    margin-top: 4px;
}

/* ========================================
   布局列表
   ======================================== */
.layout-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.layout-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    overflow: hidden;
    transition: var(--transition-normal);
}

.layout-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 30px var(--shadow-color);
}

.layout-preview {
    padding: var(--spacing-md);
    background: var(--bg-tertiary);
    aspect-ratio: 16/9;
}

.layout-grid-preview {
    width: 100%;
    height: 100%;
    display: grid;
    gap: 4px;
}

.layout-region-preview {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.3), rgba(168, 85, 247, 0.3));
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.7rem;
    color: var(--text-muted);
}

.layout-info {
    padding: var(--spacing-md);
}

.layout-name {
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.layout-meta {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.layout-actions {
    display: flex;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md) var(--spacing-md);
}

/* ========================================
   设备列表
   ======================================== */
.screen-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.screen-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    border: 1px solid var(--border-color);
    transition: var(--transition-normal);
}

.screen-card:hover {
    border-color: var(--accent-primary);
}

.screen-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-md);
}

.screen-name {
    font-weight: 600;
    font-size: 1.1rem;
}

.screen-status {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 0.8rem;
    padding: 4px 10px;
    border-radius: 20px;
}

.screen-status.online {
    background: rgba(16, 185, 129, 0.2);
    color: var(--accent-success);
}

.screen-status.offline {
    background: rgba(239, 68, 68, 0.2);
    color: var(--accent-danger);
}

.status-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: currentColor;
}

.screen-device-id {
    font-size: 0.75rem;
    color: var(--text-muted);
    padding: var(--spacing-sm);
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing-md);
    word-break: break-all;
}

.screen-actions {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

/* 访问链接 */
.screen-url {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-bottom: var(--spacing-md);
}

.url-label {
    display: block;
    margin-bottom: var(--spacing-xs);
}

.url-link {
    color: var(--accent-primary);
    text-decoration: none;
    word-break: break-all;
    display: block;
    padding: var(--spacing-sm);
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    transition: var(--transition-fast);
}

.url-link:hover {
    color: var(--accent-primary-hover);
    background: var(--border-color);
}

.device-id-text {
    font-family: monospace;
}

/* 复制框 */
.copy-box {
    display: flex;
    gap: var(--spacing-sm);
    align-items: center;
}

.copy-box input {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    background: var(--bg-tertiary);
    color: var(--text-primary);
    font-size: 0.85rem;
}

.info-text {
    padding: var(--spacing-sm);
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
}

/* ========================================
   模态框
   ======================================== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal-overlay.active {
    display: flex;
    animation: fadeIn 0.2s ease;
}

.modal {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    overflow: hidden;
    border: 1px solid var(--border-color);
    animation: slideUp 0.3s ease;
}

.modal-large {
    max-width: 900px;
}

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

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
}

.modal-header h2 {
    font-size: 1.2rem;
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0;
    line-height: 1;
}

.modal-close:hover {
    color: var(--text-primary);
}

.modal-body {
    padding: var(--spacing-lg);
    overflow-y: auto;
    max-height: calc(90vh - 80px);
}

/* ========================================
   布局编辑器
   ======================================== */
.layout-editor {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.editor-toolbar {
    display: flex;
    gap: var(--spacing-lg);
    align-items: flex-end;
    flex-wrap: wrap;
}

.toolbar-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.toolbar-group label {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.toolbar-group input {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    background: var(--bg-tertiary);
    color: var(--text-primary);
    font-size: 0.9rem;
}

.toolbar-group input:focus {
    outline: none;
    border-color: var(--accent-primary);
}

.editor-content {
    display: grid;
    grid-template-columns: 1fr 280px;
    gap: var(--spacing-lg);
    min-height: 400px;
}

.editor-preview {
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    display: grid;
    gap: 8px;
}

.editor-region {
    background: var(--bg-card);
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-sm);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition-fast);
    padding: var(--spacing-sm);
    min-height: 80px;
}

.editor-region:hover {
    border-color: var(--accent-primary);
    background: rgba(99, 102, 241, 0.1);
}

.editor-region.selected {
    border-color: var(--accent-primary);
    border-style: solid;
    background: rgba(99, 102, 241, 0.15);
}

.editor-region.has-content {
    border-style: solid;
    border-color: var(--accent-success);
}

.region-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: var(--spacing-xs);
}

.region-content-preview {
    font-size: 0.75rem;
    color: var(--accent-success);
    text-align: center;
}

.editor-content-picker {
    background: var(--bg-card);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    overflow-y: auto;
}

.editor-content-picker h3 {
    font-size: 1rem;
    margin-bottom: var(--spacing-md);
    color: var(--text-secondary);
}

.picker-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.picker-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition-fast);
}

.picker-item:hover {
    background: var(--border-color);
}

.picker-item.selected {
    background: rgba(99, 102, 241, 0.2);
    border: 1px solid var(--accent-primary);
}

.picker-thumb {
    width: 50px;
    height: 35px;
    border-radius: var(--radius-sm);
    object-fit: cover;
    background: var(--bg-secondary);
}

.picker-info {
    flex: 1;
    overflow: hidden;
}

.picker-name {
    font-size: 0.85rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.picker-type {
    font-size: 0.7rem;
    color: var(--text-muted);
}

.editor-actions {
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--border-color);
}

/* ========================================
   表单
   ======================================== */
.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.form-group input,
.form-group select {
    width: 100%;
    padding: var(--spacing-md);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--bg-tertiary);
    color: var(--text-primary);
    font-size: 0.95rem;
}

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

/* ========================================
   空状态
   ======================================== */
.empty-state {
    text-align: center;
    padding: var(--spacing-xl) * 2;
    color: var(--text-muted);
}

.empty-state-icon {
    font-size: 4rem;
    margin-bottom: var(--spacing-lg);
    opacity: 0.5;
}

.empty-state h3 {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-sm);
    color: var(--text-secondary);
}

/* ========================================
   素材预览模态框
   ======================================== */
.preview-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(8px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 2000;
}

.preview-overlay.active {
    display: flex;
    animation: fadeIn 0.2s ease;
}

.preview-container {
    position: relative;
    max-width: 90vw;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.preview-close {
    position: absolute;
    top: -40px;
    right: -40px;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border: none;
    border-radius: 50%;
    color: white;
    font-size: 1.8rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-fast);
    line-height: 1;
}

.preview-close:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: scale(1.1);
}

.preview-content {
    display: flex;
    align-items: center;
    justify-content: center;
    max-width: 100%;
    max-height: calc(90vh - 60px);
}

.preview-content img {
    max-width: 100%;
    max-height: calc(90vh - 60px);
    object-fit: contain;
    border-radius: var(--radius-md);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.preview-content video {
    max-width: 100%;
    max-height: calc(90vh - 60px);
    border-radius: var(--radius-md);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    background: #000;
}

.preview-info {
    margin-top: var(--spacing-lg);
    text-align: center;
    color: var(--text-secondary);
}

.preview-info .preview-name {
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.preview-info .preview-meta {
    font-size: 0.85rem;
    color: var(--text-muted);
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
}

.preview-info .preview-type {
    padding: 2px 10px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-sm);
}

.preview-info .preview-type.image {
    color: var(--accent-success);
}

.preview-info .preview-type.video {
    color: var(--accent-warning);
}

/* 内容卡片预览区域可点击样式 */
.content-preview {
    cursor: pointer;
    position: relative;
}

.content-preview::after {
    content: '🔍';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 2rem;
    opacity: 0;
    transition: var(--transition-fast);
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
}

.content-preview:hover::after {
    opacity: 1;
}

.content-preview:hover img,
.content-preview:hover video {
    filter: brightness(0.7);
}

/* ========================================
   用户区域
   ======================================== */
.user-section {
    padding: var(--spacing-md);
    border-top: 1px solid var(--border-color);
    margin-top: auto;
}

.user-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.user-avatar {
    font-size: 1.2rem;
}

.user-name {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.logout-btn {
    width: 100%;
}

/* ========================================
   分组管理
   ======================================== */
.group-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.group-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    border: 1px solid var(--border-color);
    transition: var(--transition-normal);
}

.group-card:hover {
    border-color: var(--accent-primary);
    transform: translateY(-2px);
}

.group-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-md);
}

.group-name {
    font-size: 1.1rem;
    font-weight: 600;
}

.group-count {
    font-size: 0.8rem;
    color: var(--text-muted);
    background: var(--bg-tertiary);
    padding: 4px 10px;
    border-radius: 20px;
}

.group-description {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

.group-actions {
    display: flex;
    gap: var(--spacing-sm);
}

/* ========================================
   筛选器和页面头部
   ======================================== */
.page-header-left {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.filter-select {
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 0.9rem;
    cursor: pointer;
    min-width: 150px;
}

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

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

/* 大屏卡片内的分组标签 */
.screen-group-tag {
    display: inline-block;
    font-size: 0.75rem;
    color: var(--accent-primary);
    background: rgba(99, 102, 241, 0.15);
    padding: 2px 8px;
    border-radius: var(--radius-sm);
    margin-top: var(--spacing-sm);
}

/* ========================================
   播放列表
   ======================================== */
.playlist-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--spacing-lg);
}

.playlist-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    border: 1px solid var(--border-color);
    transition: var(--transition-normal);
}

.playlist-card:hover {
    border-color: var(--accent-primary);
    transform: translateY(-2px);
}

.playlist-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-md);
}

.playlist-name {
    font-size: 1.1rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.playlist-meta {
    display: flex;
    gap: var(--spacing-md);
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: var(--spacing-md);
}

.playlist-description {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

.playlist-actions {
    display: flex;
    gap: var(--spacing-sm);
}

/* 播放列表项 */
.playlist-items {
    list-style: none;
    padding: 0;
    margin: 0;
}

.playlist-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-sm);
    cursor: grab;
}

.playlist-item:active {
    cursor: grabbing;
}

.playlist-item-thumb {
    width: 60px;
    height: 40px;
    border-radius: var(--radius-sm);
    object-fit: cover;
    background: var(--bg-secondary);
}

.playlist-item-info {
    flex: 1;
    min-width: 0;
}

.playlist-item-name {
    font-size: 0.9rem;
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.playlist-item-type {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.playlist-item-duration {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.playlist-item-duration input {
    width: 50px;
    padding: 4px 8px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.85rem;
    text-align: center;
}

.playlist-item-remove {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 1.2rem;
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: var(--transition-fast);
}

.playlist-item-remove:hover {
    background: rgba(239, 68, 68, 0.2);
    color: var(--accent-danger);
}

.playlist-item-actions {
    display: flex;
    gap: 4px;
    align-items: center;
}

.playlist-item-control {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 1rem;
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: var(--transition-fast);
}

.playlist-item-control:hover {
    background: var(--border-color);
    color: var(--text-primary);
}

.playlist-item-control:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

/* 播放列表编辑器 */
.playlist-editor {
    display: flex;
    gap: var(--spacing-lg);
    min-height: 400px;
}

.playlist-editor-items {
    flex: 1;
    background: var(--bg-card);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    overflow-y: auto;
    max-height: 400px;
}

.playlist-editor-picker {
    width: 280px;
    background: var(--bg-card);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    overflow-y: auto;
    max-height: 400px;
}

.playlist-editor-picker h4 {
    margin-bottom: var(--spacing-md);
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.picker-content-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing-sm);
    cursor: pointer;
    transition: var(--transition-fast);
}

.picker-content-item:hover {
    background: var(--border-color);
}

.picker-content-item img,
.picker-content-item video {
    width: 40px;
    height: 28px;
    border-radius: 4px;
    object-fit: cover;
}

.picker-content-info {
    flex: 1;
    min-width: 0;
}

.picker-content-name {
    font-size: 0.8rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.picker-content-type {
    font-size: 0.7rem;
    color: var(--text-muted);
}

/* ========================================
   播放调度
   ======================================== */
.schedule-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: var(--spacing-lg);
}

.schedule-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    border: 1px solid var(--border-color);
    transition: var(--transition-normal);
}

.schedule-card:hover {
    border-color: var(--accent-primary);
}

.schedule-card.disabled {
    opacity: 0.6;
}

.schedule-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-md);
}

.schedule-name {
    font-size: 1.1rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.schedule-status {
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 500;
}

.schedule-status.enabled {
    background: rgba(16, 185, 129, 0.15);
    color: var(--accent-success);
}

.schedule-status.disabled {
    background: rgba(107, 114, 128, 0.15);
    color: var(--text-muted);
}

.schedule-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.schedule-info-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.schedule-info-item .label {
    color: var(--text-muted);
    min-width: 60px;
}

.schedule-actions {
    display: flex;
    gap: var(--spacing-sm);
}

/* 时间选择器样式 */
.time-range {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.time-range input[type="time"] {
    padding: var(--spacing-sm);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.9rem;
}

.days-picker {
    display: flex;
    gap: var(--spacing-xs);
    flex-wrap: wrap;
}

.day-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(--text-secondary);
    font-size: 0.85rem;
    cursor: pointer;
    transition: var(--transition-fast);
}

.day-btn:hover {
    border-color: var(--accent-primary);
}

.day-btn.active {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
    color: white;
}

/* ========================================
   大屏预览
   ======================================== */
.screen-preview-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.85);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    padding: 20px;
}

.screen-preview-overlay.active {
    display: flex;
}

.screen-preview-container {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    width: 90%;
    max-width: 1200px;
    height: 80vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.screen-preview-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-tertiary);
}

.screen-preview-header h3 {
    margin: 0;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.screen-preview-controls {
    display: flex;
    gap: var(--spacing-sm);
    align-items: center;
}

.screen-preview-close {
    background: transparent;
    border: none;
    font-size: 24px;
    color: var(--text-muted);
    cursor: pointer;
    padding: 4px 8px;
    line-height: 1;
    transition: var(--transition-fast);
}

.screen-preview-close:hover {
    color: var(--accent-danger);
}

.screen-preview-body {
    flex: 1;
    position: relative;
    background: #000;
    overflow: hidden;
}

.screen-preview-body iframe {
    width: 100%;
    height: 100%;
    border: none;
}

/* Fix form alignment and spacing */
.form-control {
    width: 100%;
    box-sizing: border-box;
    height: 42px;
    /* Fixed height for consistency */
    line-height: 1.5;
}

textarea.form-control {
    height: auto;
}

.form-row {
    align-items: flex-start;
}

/* Ensure buttons are properly aligned */
.form-actions {
    margin-top: 24px;
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
    /* Optional separation */
}

/* Specific fix for datetime inputs to look consistent */
input[type="datetime-local"] {
    font-family: inherit;
    display: block;
}

/* ========================================
   响应式
   ======================================== */
@media (max-width: 768px) {
    .sidebar {
        width: 70px;
    }

    .logo-text,
    .nav-item span:not(.nav-icon),
    .user-name,
    .logout-btn {
        display: none;
    }

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

    .main-content {
        margin-left: 70px;
        padding: var(--spacing-md);
    }

    .editor-content {
        grid-template-columns: 1fr;
    }

    .preview-close {
        top: 10px;
        right: 10px;
    }

    .page-header-left {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-sm);
    }
}

/* ========================================
   游戏管理
   ======================================== */
.game-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: var(--spacing-lg);
}

.game-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    padding: var(--spacing-lg);
    transition: var(--transition-normal);
}

.game-card:hover {
    border-color: var(--accent-primary);
    transform: translateY(-4px);
    box-shadow: 0 10px 30px var(--shadow-color);
}

.game-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-md);
}

.game-name {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 4px;
}

.game-meta {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.badge {
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 500;
}

.badge-secondary {
    background: rgba(107, 107, 130, 0.2);
    color: var(--text-secondary);
}

.badge-success {
    background: rgba(16, 185, 129, 0.2);
    color: var(--accent-success);
}

.badge-warning {
    background: rgba(245, 158, 11, 0.2);
    color: var(--accent-warning);
}

.badge-danger {
    background: rgba(239, 68, 68, 0.2);
    color: var(--accent-danger);
}

.game-stats-mini {
    display: flex;
    gap: var(--spacing-lg);
    background: var(--bg-tertiary);
    padding: var(--spacing-md);
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing-md);
}

.stat-mini {
    display: flex;
    flex-direction: column;
}

.stat-mini .label {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.stat-mini .value {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.game-actions,
.game-controls {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-sm);
    flex-wrap: wrap;
}

.game-actions {
    margin-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
    padding-bottom: var(--spacing-md);
}

.form-control {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    background: var(--bg-tertiary);
    color: var(--text-primary);
    font-size: 0.9rem;
    transition: var(--transition-fast);
}

.form-control:focus {
    outline: none;
    border-color: var(--accent-primary);
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-size: 0.85rem;
    color: var(--text-muted);
}

.prizes-list,
.stats-tabs {
    min-height: 200px;
}