/* ============ 全局样式 ============ */
* { margin: 0; padding: 0; box-sizing: border-box; }
body {
    font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
    background: #f5f6fa;
    color: #333;
    font-size: 14px;
}
a { text-decoration: none; color: #1677ff; }
a:hover { opacity: 0.85; }

/* 布局 */
.navbar {
    background: #1f2d3d;
    color: #fff;
    padding: 0 24px;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.navbar .brand { font-size: 16px; font-weight: bold; }
.navbar .menu { display: flex; gap: 20px; align-items: center; }
.navbar .menu a { color: #cfd8e3; }
.navbar .menu a.active { color: #fff; font-weight: bold; }
.navbar .user { display: flex; gap: 14px; align-items: center; color: #cfd8e3; }
.container { max-width: 1080px; margin: 24px auto; padding: 0 16px; }

.card {
    background: #fff;
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 16px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.06);
}

/* 消息提示 */
.alert { padding: 10px 14px; border-radius: 6px; margin-bottom: 14px; }
.alert-success { background: #f0f9eb; color: #529b2e; border: 1px solid #e1f3d8; }
.alert-error { background: #fef0f0; color: #c45656; border: 1px solid #fde2e2; }

/* 表格 */
table.table { width: 100%; border-collapse: collapse; background: #fff; border-radius: 8px; overflow: hidden; }
.table th, .table td { padding: 10px 12px; text-align: left; border-bottom: 1px solid #f0f0f0; }
.table th { background: #fafafa; font-weight: 600; color: #555; }
.table tr:hover td { background: #fafcff; }

/* 按钮 */
.btn {
    display: inline-block;
    padding: 6px 14px;
    border-radius: 4px;
    border: 1px solid #d9d9d9;
    background: #fff;
    color: #333;
    cursor: pointer;
    font-size: 13px;
    line-height: 20px;
}
.btn:hover { border-color: #1677ff; color: #1677ff; }
.btn-primary { background: #1677ff; border-color: #1677ff; color: #fff; }
.btn-primary:hover { background: #4096ff; color: #fff; }
.btn-danger { background: #ff4d4f; border-color: #ff4d4f; color: #fff; }
.btn-danger:hover { background: #ff7875; color: #fff; }
.btn-success { background: #52c41a; border-color: #52c41a; color: #fff; }
.btn-success:hover { background: #73d13d; color: #fff; }
.btn-sm { padding: 3px 10px; font-size: 12px; }

/* 表单 */
.form-group { margin-bottom: 16px; }
.form-group label { display: block; margin-bottom: 6px; color: #555; }
.form-group input[type="text"],
.form-group input[type="password"],
.form-group input[type="file"],
.form-group select {
    width: 100%;
    padding: 8px 10px;
    border: 1px solid #d9d9d9;
    border-radius: 4px;
    font-size: 14px;
    background: #fff;
}
.form-group input:focus, .form-group select:focus { outline: none; border-color: #1677ff; }
.form-inline { display: flex; gap: 8px; align-items: center; }
.form-inline input, .form-inline select { flex: 1; }

/* 徽标 */
.badge { display: inline-block; padding: 2px 8px; border-radius: 10px; font-size: 12px; }
.badge-on { background: #f0f9eb; color: #529b2e; }
.badge-off { background: #f4f4f4; color: #999; }

/* 登录页 */
.login-wrap {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #1f2d3d 0%, #2c4a6e 100%);
}
.login-box {
    width: 380px;
    background: #fff;
    border-radius: 10px;
    padding: 32px;
    box-shadow: 0 8px 30px rgba(0,0,0,0.2);
}
.login-box h1 { text-align: center; font-size: 20px; margin-bottom: 6px; }
.login-box .sub { text-align: center; color: #999; font-size: 13px; margin-bottom: 22px; }
.tabs { display: flex; margin-bottom: 20px; border-bottom: 1px solid #eee; }
.tabs .tab {
    flex: 1; text-align: center; padding: 10px 0; cursor: pointer;
    color: #666; border-bottom: 2px solid transparent;
}
.tabs .tab.active { color: #1677ff; border-bottom-color: #1677ff; font-weight: bold; }

/* 二维码页 */
.qr-box { text-align: center; }
.qr-box img { width: 260px; height: 260px; margin: 10px auto; }
.qr-url {
    background: #f7f8fa; padding: 8px 10px; border-radius: 4px;
    word-break: break-all; color: #555; margin: 10px 0; font-size: 13px;
}

/* C 端观看页 */
.watch-body { background: #0f1420; color: #fff; min-height: 100vh; }
.watch-wrap { max-width: 860px; margin: 0 auto; padding: 30px 16px 60px; }
.watch-wrap video { width: 100%; background: #000; border-radius: 8px; }
.watch-title { margin-top: 16px; font-size: 20px; }
.watch-tip { color: #8b93a3; margin-top: 8px; font-size: 13px; }
.ended-box { text-align: center; padding-top: 80px; }
.ended-box .icon { font-size: 64px; }
.ended-box h2 { margin: 16px 0 8px; }
.ended-box p { color: #8b93a3; }

/* 播放器容器与自定义控件 */
.player-box { position: relative; background: #000; border-radius: 8px; overflow: hidden; }
.player-box video { width: 100%; display: block; background: #000; }
.big-play {
    position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%);
    width: 66px; height: 66px; border-radius: 50%;
    background: rgba(0, 0, 0, .55); border: 2px solid rgba(255, 255, 255, .85);
    color: #fff; font-size: 24px; line-height: 1;
    display: flex; align-items: center; justify-content: center;
    cursor: pointer;
}
.ctrl-bar { display: flex; align-items: center; gap: 10px; margin-top: 12px; flex-wrap: wrap; }
.ctrl-bar button {
    padding: 8px 20px; border-radius: 999px; font-size: 14px; cursor: pointer;
    background: #1b2334; color: #e6ebf5; border: 1px solid #3a4358;
}
.ctrl-bar button:active { opacity: .8; }
.ctrl-bar .hint { color: #8b93a3; font-size: 12px; }

/* 静音开关：浮在视频右上角，静音时高亮脉冲吸引点击 */
.sound-fab {
    position: absolute; right: 12px; top: 12px;
    display: flex; align-items: center; gap: 6px;
    padding: 7px 14px 7px 10px; border-radius: 999px;
    background: rgba(0, 0, 0, .6); color: #fff;
    border: 1px solid rgba(255, 255, 255, .55);
    font-size: 13px; line-height: 20px; cursor: pointer;
}
.sound-fab .ico-mute { display: none; }
.sound-fab.muted { background: rgba(214, 64, 46, .92); border-color: rgba(255, 255, 255, .85); }
.sound-fab.muted .ico-mute { display: block; }
.sound-fab.muted .ico-sound { display: none; }
.sound-fab:active { opacity: .85; }
@keyframes soundPulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.06); opacity: .92; }
}
@media (prefers-reduced-motion: no-preference) {
    .sound-fab.muted { animation: soundPulse 1.6s ease-in-out infinite; }
}

/* 移动端适配 */
@media (max-width: 640px) {
    .container { padding: 0 8px; }
    .table th, .table td { padding: 8px 6px; font-size: 12px; }
    .navbar { padding: 0 12px; }
    .btn { padding: 4px 10px; }
}