:root {
    /* Material You 动态颜色系统 */
    --md-sys-color-primary: #006495;
    --md-sys-color-primary-container: #cce5ff;
    --md-sys-color-on-primary: #ffffff;
    --md-sys-color-on-primary-container: #001e31;
    --md-sys-color-secondary: #50606e;
    --md-sys-color-on-secondary: #ffffff;
    --md-sys-color-secondary-container: #d3e5f5;
    --md-sys-color-on-secondary-container: #0c1d29;
    --md-sys-color-surface: #fdfcff;
    --md-sys-color-surface-variant: #dfe2eb;
    --md-sys-color-background: #fdfcff;
    --md-sys-color-error: #ba1a1a;
    
    /* Material You 海拔效果 */
    --md-elevation-1: 0px 1px 2px rgba(0,0,0,0.3), 0px 1px 3px 1px rgba(0,0,0,0.15);
    --md-elevation-2: 0px 2px 6px rgba(0,0,0,0.15), 0px 1px 2px rgba(0,0,0,0.3);
    --md-elevation-3: 0px 4px 8px 3px rgba(0,0,0,0.15), 0px 1px 3px rgba(0,0,0,0.3);

    /* Material You 圆角 */
    --md-radius-small: 8px;
    --md-radius-medium: 16px;
    --md-radius-large: 28px;
}

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

body {
    font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    background-color: var(--md-sys-color-background);
    color: var(--md-sys-color-on-secondary-container);
    line-height: 1.5;
}

/* 顶部导航栏 */
header {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    background-color: var(--md-sys-color-surface);
    box-shadow: var(--md-elevation-2);
    position: sticky;
    top: 0;
    z-index: 100;
    gap: 1rem;
}

.logo-title {
    display: flex;
    align-items: center;
    gap: 1rem;
    cursor: pointer;
    flex: 1;
}

.logo-title img {
    height: 32px;
    width: auto;
    padding: 4px;
    border-radius: 50%;
    background-color: var(--md-sys-color-primary);
}

.logo-title h1 {
    font-size: 1.25rem;
    color: var(--md-sys-color-on-secondary-container);
}

/* 按钮样式 */
.button {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    height: 40px;
    padding: 0 1.5rem;
    border: none;
    border-radius: var(--md-radius-small);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    position: relative;
    overflow: hidden;
}

.button-filled {
    background-color: var(--md-sys-color-primary);
    color: var(--md-sys-color-on-primary);
}

.button-filled:hover {
    box-shadow: var(--md-elevation-2);
}

.button-tonal {
    background-color: var(--md-sys-color-secondary-container);
    color: var(--md-sys-color-on-secondary-container);
}

/* 输入框样式 */
.text-field {
    margin: 1.5rem 0;
}

.text-field input {
    width: 100%;
    padding: 1rem;
    border: 1px solid var(--md-sys-color-outline);
    border-radius: var(--md-radius-small);
    background-color: var(--md-sys-color-surface);
    font-size: 1rem;
    transition: all 0.2s ease;
}

.text-field input:focus {
    outline: none;
    border-color: var(--md-sys-color-primary);
    box-shadow: 0 0 0 4px var(--md-sys-color-primary-container);
}

/* 卡片样式 */
.card {
    background-color: var(--md-sys-color-surface);
    border-radius: var(--md-radius-medium);
    padding: 1rem;
    margin: 1rem;
    box-shadow: var(--md-elevation-1);
    transition: box-shadow 0.2s ease;
}

.card:hover {
    box-shadow: var(--md-elevation-2);
}

/* 弹窗样式 */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.32);
    z-index: 1000;
    animation: fadeIn 0.2s ease;
}

.modal-content {
    background-color: var(--md-sys-color-surface);
    margin: 2rem auto;
    padding: 1.5rem;
    border-radius: var(--md-radius-large);
    width: 90%;
    max-width: 560px;
    position: relative;
    box-shadow: var(--md-elevation-3);
    animation: slideUp 0.3s ease;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.modal-title {
    font-size: 1.5rem;
    font-weight: 500;
    color: var(--md-sys-color-on-surface);
}

.close {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--md-sys-color-on-surface-variant);
    background: transparent;
    border: none;
    transition: background-color 0.2s ease;
}

.close:hover {
    background-color: var(--md-sys-color-surface-variant);
}

/* 视频播放器容器 */
.room-container {
    padding: 1rem 2rem;
}

.video-section {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.video-wrapper {
    width: 80%;
    margin: 0 auto;
}

#videoPlayer {
    width: 100%;
    aspect-ratio: 16/9;
    background: #000;
}

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

.playlist-items li {
    padding: 0.75rem;
    border-bottom: 1px solid var(--md-sys-color-surface-variant);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 0.5rem;
}

.playlist-items .video-url {
    flex: 1;
    overflow: hidden;
    cursor: pointer;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    word-break: break-all;
    font-size: 0.875rem;
}

.playlist-items .delete-video {
    color: var(--md-sys-color-error);
    cursor: pointer;
    padding: 0.25rem;
    border-radius: 50%;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.playlist-items .delete-video:hover {
    background-color: var(--md-sys-color-surface-variant);
}

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

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

/* 响应式设计 */
@media (max-width: 768px) {
    header {
        padding: 1rem;
    }

    /* 首页标题栏布局 */
    header:not(.room-page header) {
        display: grid;
        grid-template-areas:
            "logo button"
            "user user";
        gap: 1rem;
        align-items: center;
    }

    header:not(.room-page header) .logo-title {
        grid-area: logo;
        margin: 0;
    }

    header:not(.room-page header) .create-room-btn {
        grid-area: button;
        margin: 0;
    }

    header:not(.room-page header) .user-info {
        grid-area: user;
        width: 100%;
        margin: 0;
        justify-content: center;
    }

    /* 房间页面标题栏布局 */
    .room-page header {
        display: flex;
        flex-wrap: nowrap;
    }

    .room-page header .logo-title {
        flex: 1;
    }

    .room-page header .user-info {
        margin: 0;
    }

    .room-page header .header-actions {
        margin: 0;
    }

    .modal-content {
        margin: 1rem;
        width: calc(100% - 2rem);
    }
    
    .room-container {
        padding: 0.5rem;
    }
    
    .video-wrapper {
        width: 100%;
    }
}

/* 搜索框样式 */
.search-container {
    padding: 1rem 2rem;
    max-width: 800px;
    margin: 0 auto;
}

.search-field {
    position: relative;
    margin: 0;
}

.search-field .material-icons {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--md-sys-color-secondary);
}

.search-field input {
    padding-left: 3rem;
}

/* 房间列表样式 */
.room-list {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1rem;
}

.room-card {
    background-color: var(--md-sys-color-surface);
    border-radius: var(--md-radius-medium);
    padding: 1.5rem;
    box-shadow: var(--md-elevation-1);
    transition: all 0.2s ease;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.room-card:hover {
    box-shadow: var(--md-elevation-2);
    transform: translateY(-2px);
}

.room-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1rem;
}

.room-name {
    font-size: 1.25rem;
    font-weight: 500;
    color: var(--md-sys-color-on-surface);
    margin-right: 0.5rem;
}

.room-password-indicator {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    color: var(--md-sys-color-secondary);
    font-size: 0.875rem;
}

.room-info {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.room-owner, .room-time {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--md-sys-color-secondary);
    font-size: 0.875rem;
}

.material-icons {
    font-size: 1.25rem;
}

/* 创建房间按钮 */
.create-room-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.create-room-btn .material-icons {
    font-size: 1.25rem;
}

/* 二维码容器 */
.qrcode-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
    padding: 1.5rem;
}

#qrcode {
    background: white;
    padding: 1rem;
    border-radius: var(--md-radius-medium);
    box-shadow: var(--md-elevation-1);
}

#qrcode canvas {
    display: block;
}

.qrcode-hint {
    color: var(--md-sys-color-on-surface-variant);
    font-size: 0.875rem;
}

/* 用户信息显示 */
.user-info {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background-color: var(--md-sys-color-surface-variant);
    border-radius: var(--md-radius-small);
    margin-right: 1rem;
    cursor: pointer;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* 菜单按钮 */
.button-icon {
    width: 40px;
    height: 40px;
    padding: 0;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
}

.button-icon:hover {
    background-color: var(--md-sys-color-surface-variant);
}

/* 下拉菜单 */
.menu-dropdown {
    display: none;
    position: absolute;
    top: 60px;
    right: 1rem;
    background-color: var(--md-sys-color-surface);
    border-radius: var(--md-radius-medium);
    box-shadow: var(--md-elevation-2);
    z-index: 1000;
    min-width: 200px;
    padding: 0.5rem 0;
}

.menu-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    cursor: pointer;
    transition: background-color 0.2s ease;
}

.menu-item:hover {
    background-color: var(--md-sys-color-surface-variant);
}

.menu-item.danger {
    color: var(--md-sys-color-error);
}

/* 在线用户列表样式 */
.online-users {
    background-color: var(--md-sys-color-surface);
    border-radius: var(--md-radius-medium);
    padding: 1rem;
    box-shadow: var(--md-elevation-1);
}

.section-title {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.section-title .left {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.section-title .right {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.sync-state-btn {
    display: none; /* 默认隐藏 */
    padding: 0.25rem;
    border-radius: 50%;
    cursor: pointer;
    color: var(--md-sys-color-primary);
    transition: background-color 0.2s ease;
}

.sync-state-btn:hover {
    background-color: var(--md-sys-color-surface-variant);
}

.sync-state-btn .material-icons {
    font-size: 20px;
}

.users-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    padding: 0.5rem;
}

.user-chip {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background-color: var(--md-sys-color-surface-variant);
    border-radius: var(--md-radius-small);
    font-size: 0.875rem;
    color: var(--md-sys-color-on-surface-variant);
    transition: background-color 0.2s ease;
}

.user-chip.owner {
    background-color: var(--md-sys-color-primary-container);
    color: var(--md-sys-color-on-primary-container);
}

.user-chip .material-icons {
    font-size: 1.125rem;
}

.user-chip.current-user {
    background-color: var(--md-sys-color-secondary-container);
    color: var(--md-sys-color-on-secondary-container);
    font-weight: 500;
}

.user-chip.owner.current-user {
    background-color: var(--md-sys-color-primary);
    color: var(--md-sys-color-on-primary);
}

/* 修改返回按钮样式 */
.back-button {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    color: var(--md-sys-color-on-surface);
    transition: background-color 0.2s ease;
}

.back-button:hover {
    background-color: var(--md-sys-color-surface-variant);
}

.back-button .material-icons {
    font-size: 24px;
}

/* 弹窗内的输入框容器 */
.modal .text-field {
    margin: 1.5rem 0;
    padding: 0 1rem;
}

/* 播放列表添加视频部分 */
.playlist-add {
    padding: 1rem;
    border-bottom: 1px solid var(--md-sys-color-surface-variant);
    margin-bottom: 1rem;
}

.playlist-add .text-field {
    margin: 1rem 0;
}

/* 加载视频弹窗 */
#loadVideoModal .modal-content,
#playlistModal .modal-content {
    padding: 1.5rem;
}

#loadVideoModal .text-field,
#playlistModal .text-field {
    margin: 1.5rem 0;
}

/* 按钮容器 */
.button-container {
    display: flex;
    justify-content: flex-end;
    gap: 1rem;
    margin-top: 1.5rem;
    padding: 0 1rem;
}

/* Toast 提示样式 */
.toast-container {
    position: fixed;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2000;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    pointer-events: none;
}

.toast {
    background-color: var(--md-sys-color-surface);
    color: var(--md-sys-color-on-surface);
    border-radius: var(--md-radius-medium);
    box-shadow: var(--md-elevation-2);
    padding: 0.75rem 1rem;
}

.toast.success {
    background-color: var(--md-sys-color-primary-container);
    color: var(--md-sys-color-on-primary-container);
}

.toast.error {
    background-color: var(--md-sys-color-error-container);
    color: var(--md-sys-color-on-error-container);
}

.toast .material-icons {
    font-size: 1.25rem;
}

@keyframes toastSlideUp {
    from {
        transform: translateY(100%);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

/* 确认弹窗样式 */
.confirm-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.32);
    z-index: 1000;
    animation: fadeIn 0.2s ease;
}

.confirm-content {
    background-color: var(--md-sys-color-surface);
    margin: 20vh auto;
    padding: 1.5rem;
    border-radius: var(--md-radius-large);
    width: 90%;
    max-width: 400px;
    position: relative;
    box-shadow: var(--md-elevation-3);
    animation: slideUp 0.3s ease;
}

.confirm-title {
    font-size: 1.25rem;
    font-weight: 500;
    color: var(--md-sys-color-on-surface);
    margin-bottom: 1rem;
}

.confirm-message {
    color: var(--md-sys-color-on-surface-variant);
    margin-bottom: 1.5rem;
    line-height: 1.5;
}

.confirm-buttons {
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
}

.confirm-buttons .button {
    min-width: 80px;
    height: 36px;
    padding: 0 1rem;
}

/* 空状态样式 */
.empty-state {
    grid-column: 1 / -1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    padding: 3rem 1rem;
    color: var(--md-sys-color-on-surface-variant);
}

.empty-state .material-icons {
    font-size: 4rem;
    opacity: 0.5;
}

.empty-state p {
    font-size: 1rem;
}

/* 调整创建按钮样式 */
.button .material-icons {
    font-size: 1.25rem;
}

/* 确认弹窗按钮样式 */
.button-text {
    background: transparent;
    color: var(--md-sys-color-primary);
}

.button-text:hover {
    background-color: var(--md-sys-color-surface-variant);
}

/* Plyr 播放器样式覆盖 */
.plyr {
    --plyr-color-main: var(--md-sys-color-primary);
    --plyr-video-background: #000;
    height: 100%;
    width: 100%;
}

.plyr--video {
    border-radius: var(--md-radius-medium);
    overflow: hidden;
}

.video-container {
    width: 100%;
    height: 100%;
    background: #000;
    border-radius: var(--md-radius-medium);
    overflow: hidden;
}

/* 获取视频按钮样式 */
.get-video-btn {
    display: none; /* 默认隐藏 */
    padding: 0.25rem;
    border-radius: 50%;
    cursor: pointer;
    color: var(--md-sys-color-primary);
    transition: background-color 0.2s ease;
}

.get-video-btn:hover {
    background-color: var(--md-sys-color-surface-variant);
}

.get-video-btn .material-icons {
    font-size: 20px;
}

/* 视频状态指示器样式 */
.video-status {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
    margin-bottom: 1rem;
    background-color: var(--md-sys-color-surface);
    border-radius: var(--md-radius-medium);
    box-shadow: var(--md-elevation-1);
    color: var(--md-sys-color-on-surface-variant);
}

.video-status .material-icons {
    font-size: 1.25rem;
}

.video-status.loading {
    color: var(--md-sys-color-primary);
}

.video-status.error {
    color: var(--md-sys-color-error);
}

.video-status.ready {
    color: var(--md-sys-color-primary);
}