/* LiteMeet 样式文件 - 深色主题视频会议界面 */

/* CSS变量定义 */
:root {
    --bg-primary: #0f0f0f;
    --bg-secondary: #1a1a1a;
    --bg-tertiary: #252525;
    --bg-hover: #2d2d2d;
    --text-primary: #ffffff;
    --text-secondary: #a0a0a0;
    --text-muted: #666666;
    --accent-primary: #0052d9;
    --accent-hover: #0066ff;
    --accent-success: #00c853;
    --accent-danger: #ff4d4f;
    --accent-warning: #ff9800;
    --border-color: #333333;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
    --transition: all 0.3s ease;
}

/* 全局样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    overflow: hidden;
    height: 100vh;
    width: 100vw;
}

/* 页面容器 */
.page {
    width: 100%;
    height: 100vh;
    display: flex;
    flex-direction: column;
}

.page.hidden {
    display: none;
}

/* 入口页面样式 */
#landing-page {
    justify-content: center;
    align-items: center;
    background: linear-gradient(135deg, #0f0f0f 0%, #1a1a2e 50%, #0f0f0f 100%);
}

.landing-container {
    text-align: center;
    max-width: 480px;
    padding: 40px;
}

.logo {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    margin-bottom: 16px;
}

.logo h1 {
    font-size: 36px;
    font-weight: 700;
    color: var(--text-primary);
}

.subtitle {
    color: var(--text-secondary);
    font-size: 16px;
    margin-bottom: 40px;
}

.form-card {
    background: var(--bg-secondary);
    border-radius: 16px;
    padding: 32px;
    box-shadow: var(--shadow);
}

.form-group {
    margin-bottom: 24px;
    text-align: left;
}

.form-group label {
    display: block;
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.form-group input {
    width: 100%;
    padding: 14px 16px;
    font-size: 16px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    transition: var(--transition);
}

.form-group input:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(0, 82, 217, 0.2);
}

.form-group input::placeholder {
    color: var(--text-muted);
}

.room-input-group {
    display: flex;
    gap: 8px;
}

.room-input-group input {
    flex: 1;
}

.btn-secondary {
    padding: 14px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-secondary:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.button-group {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-top: 32px;
}

.btn-primary,
.btn-outline {
    width: 100%;
    padding: 16px;
    font-size: 16px;
    font-weight: 600;
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition);
}

.btn-primary {
    background: var(--accent-primary);
    color: white;
    border: none;
}

.btn-primary:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 82, 217, 0.4);
}

.btn-outline {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

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

.tip {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 16px;
}

/* 会议页面样式 */
#meeting-page {
    background: var(--bg-primary);
}

/* 顶部栏 */
.top-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 24px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    z-index: 100;
}

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

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

.room-number {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    letter-spacing: 1px;
}

.btn-icon {
    padding: 8px;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    border-radius: 6px;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-icon:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.participant-count {
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--text-secondary);
    font-size: 14px;
}

/* 视频网格 */
.video-grid {
    flex: 1;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 16px;
    padding: 24px;
    overflow-y: auto;
    background: var(--bg-primary);
}

.video-container {
    position: relative;
    background: var(--bg-tertiary);
    border-radius: 12px;
    overflow: hidden;
    aspect-ratio: 16 / 9;
    min-height: 200px;
}

.video-container video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.video-container.local video {
    transform: scaleX(-1);
}

/* 屏幕共享时不镜像 */
.video-container.local.screen-sharing video {
    transform: scaleX(1);
}

/* 全屏样式 */
.video-container.fullscreen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 9999;
    border-radius: 0;
    aspect-ratio: auto;
}

.video-container.fullscreen video {
    object-fit: contain;
}

.video-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 12px;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.7));
}

.participant-name {
    font-size: 14px;
    color: white;
    font-weight: 500;
}

.video-status {
    position: absolute;
    top: 12px;
    right: 12px;
    display: flex;
    gap: 8px;
}

.status-icon {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.5);
    color: white;
}

.status-icon.off {
    color: var(--accent-danger);
}

.video-container video.muted {
    opacity: 0;
}

.video-container .video-placeholder {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-tertiary);
    color: var(--text-muted);
    font-size: 48px;
}

/* 聊天侧边栏 */
.chat-sidebar {
    position: fixed;
    top: 60px;
    right: 0;
    width: 360px;
    height: calc(100vh - 60px - 80px);
    background: var(--bg-secondary);
    border-left: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    z-index: 50;
    transition: var(--transition);
}

.chat-sidebar.hidden {
    transform: translateX(100%);
}

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

.chat-header h3 {
    font-size: 16px;
    font-weight: 600;
}

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.system-message {
    text-align: center;
    color: var(--text-muted);
    font-size: 12px;
    padding: 8px;
}

.message {
    max-width: 80%;
    padding: 10px 14px;
    border-radius: 12px;
    font-size: 14px;
    line-height: 1.5;
}

.message.self {
    align-self: flex-end;
    background: var(--accent-primary);
    color: white;
    border-bottom-right-radius: 4px;
}

.message.other {
    align-self: flex-start;
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border-bottom-left-radius: 4px;
}

.message .sender {
    font-size: 12px;
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.message.self .sender {
    color: rgba(255, 255, 255, 0.7);
}

.message .time {
    font-size: 10px;
    color: var(--text-muted);
    margin-top: 4px;
    text-align: right;
}

.message.self .time {
    color: rgba(255, 255, 255, 0.6);
}

.chat-input-area {
    display: flex;
    gap: 8px;
    padding: 16px;
    border-top: 1px solid var(--border-color);
}

.chat-input-area input {
    flex: 1;
    padding: 12px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 14px;
}

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

.btn-sm {
    padding: 10px 20px;
    font-size: 14px;
}

/* 控制栏 */
.control-bar {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 40px;
    padding: 16px 24px;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
}

.control-group {
    display: flex;
    gap: 12px;
}

.control-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    padding: 12px 20px;
    background: var(--bg-tertiary);
    border: none;
    border-radius: 12px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
    position: relative;
}

.control-btn:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
    transform: translateY(-2px);
}

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

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

.control-btn.danger:hover {
    background: #ff7875;
}

.control-btn span {
    font-size: 12px;
}

.badge {
    position: absolute;
    top: 6px;
    right: 6px;
    min-width: 18px;
    height: 18px;
    padding: 0 5px;
    background: var(--accent-danger);
    border-radius: 9px;
    font-size: 11px;
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
}

.badge.hidden {
    display: none;
}

/* 提示消息 */
.toast {
    position: fixed;
    top: 24px;
    left: 50%;
    transform: translateX(-50%);
    padding: 14px 24px;
    background: var(--bg-tertiary);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 14px;
    box-shadow: var(--shadow);
    z-index: 1000;
    transition: var(--transition);
    max-width: 400px;
    text-align: center;
}

.toast.hidden {
    opacity: 0;
    transform: translateX(-50%) translateY(-20px);
    pointer-events: none;
}

.toast.success {
    background: var(--accent-success);
    color: white;
}

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

/* 响应式设计 */
@media (max-width: 768px) {
    .landing-container {
        padding: 20px;
    }

    .form-card {
        padding: 24px;
    }

    .video-grid {
        grid-template-columns: 1fr;
        padding: 16px;
    }

    .chat-sidebar {
        width: 100%;
    }

    .control-bar {
        gap: 8px;
        padding: 12px;
    }

    .control-btn {
        padding: 10px 14px;
    }

    .control-btn span {
        display: none;
    }
}

/* 加载动画 */
@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.loading {
    animation: pulse 1.5s infinite;
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: var(--bg-tertiary);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}