/* AIVideo 前端样式 — 深色科技主题 */
/* 色彩定义 */
:root {
    --bg:          #0d1117;   /* 页面背景 */
    --panel:       #161b22;   /* 面板背景 */
    --border:      #30363d;   /* 边框颜色 */
    --accent:      #58a6ff;   /* 主强调色（蓝） */
    --success:     #3fb950;   /* 成功绿 */
    --warning:     #d29922;   /* 警告橙 */
    --danger:      #f85149;   /* 危险红 */
    --text:        #c9d1d9;   /* 主文字 */
    --text-muted:  #8b949e;   /* 次要文字 */
    --tag-bg:      #21262d;   /* 标签背景 */
    --alarm-color: #ff4d4f;   /* 报警红 */
}

/* ── 全局重置 ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body {
    font-family: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    background: var(--bg);
    color: var(--text);
    height: 100vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;        /* 整页不滚动 */
}

/* ── 顶部标题栏 ── */
.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
    height: 52px;
    background: var(--panel);
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
}
.topbar .logo      { font-size: 20px; font-weight: 700; color: var(--accent); }
.topbar .subtitle  { font-size: 13px; color: var(--text-muted); margin-left: 10px; }
.badge { font-size: 12px; padding: 3px 10px; border-radius: 12px; font-weight: 500; }
.badge-offline { background: #2d1b1b; color: var(--danger); }
.badge-online  { background: #1b2d1b; color: var(--success); }

/* ── 主体布局 ── */
.main-layout {
    display: flex;
    flex: 1;
    overflow: hidden;
    gap: 0;
}

/* ── 左侧视频区 ── */
.video-section {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #000;
    position: relative;
    overflow: hidden;
}
.video-wrapper {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}
#hidden-video { display: none; }   /* 视频元素隐藏，由 canvas 渲染 */
#main-canvas {
    max-width: 100%;
    max-height: 100%;
    display: block;
    cursor: crosshair;
}

/* 告警横幅 */
.alarm-banner {
    position: absolute;
    top: 0; left: 0; right: 0;
    background: rgba(248, 81, 73, 0.92);
    color: #fff;
    text-align: center;
    padding: 10px;
    font-size: 16px;
    font-weight: 700;
    animation: flash 0.5s infinite alternate;
    z-index: 10;
}
@keyframes flash { from { opacity: 1; } to { opacity: 0.5; } }

/* 绘制模式提示 */
.draw-hint {
    position: absolute;
    bottom: 12px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(210, 153, 34, 0.9);
    color: #fff;
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 13px;
    z-index: 10;
}
.hidden { display: none !important; }

/* ── 右侧控制面板 ── */
.control-panel {
    width: 280px;
    flex-shrink: 0;
    background: var(--panel);
    border-left: 1px solid var(--border);
    overflow-y: auto;
    padding: 12px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

/* 面板块 */
.panel-block {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 10px 12px;
}
.block-title {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-muted);
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* 按钮样式 */
.btn {
    padding: 6px 14px;
    border: none;
    border-radius: 6px;
    font-size: 13px;
    cursor: pointer;
    transition: opacity .15s;
    white-space: nowrap;
}
.btn:hover:not(:disabled) { opacity: .82; }
.btn:disabled { opacity: .4; cursor: not-allowed; }
.btn-primary      { background: var(--accent);   color: #fff; }
.btn-secondary    { background: #21262d; color: var(--text); border: 1px solid var(--border); }
.btn-success      { background: var(--success);  color: #fff; }
.btn-danger       { background: var(--danger);   color: #fff; }
.btn-danger-soft  { background: #2d1b1b; color: var(--danger); border: 1px solid var(--danger); }
.btn-warning      { background: var(--warning);  color: #fff; }
.btn-xs           { padding: 2px 8px; font-size: 11px; background: var(--tag-bg); color: var(--text-muted); }
.btn-drawing      { background: #1b2d1b; color: var(--success); border: 1px solid var(--success); }

.btn-row          { display: flex; gap: 6px; flex-wrap: wrap; }
.btn-row.vertical { flex-direction: column; }

/* 输入框 */
.text-input, .select-ctrl {
    width: 100%;
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text);
    padding: 6px 10px;
    font-size: 13px;
    margin-top: 4px;
}
.text-input:focus, .select-ctrl:focus { outline: none; border-color: var(--accent); }

/* 快速标签 */
.quick-tags { display: flex; flex-wrap: wrap; gap: 5px; margin-top: 7px; }
.tag {
    background: var(--tag-bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 2px 10px;
    font-size: 12px;
    cursor: pointer;
    transition: all .15s;
}
.tag:hover { border-color: var(--accent); color: var(--accent); }

/* 滑块 */
.slider-row { display: flex; align-items: center; gap: 10px; margin-top: 4px; }
input[type=range] {
    flex: 1;
    accent-color: var(--accent);
}
.slider-label { font-size: 13px; color: var(--accent); min-width: 34px; text-align: right; }

/* 开关切换 */
.toggle-row { display: flex; align-items: center; gap: 10px; cursor: pointer; }
.toggle-row input[type=checkbox] { display: none; }
.toggle-track {
    width: 36px; height: 20px;
    background: var(--border);
    border-radius: 10px;
    position: relative;
    transition: background .2s;
}
.toggle-row input:checked + .toggle-track { background: var(--success); }
.toggle-thumb {
    position: absolute;
    width: 16px; height: 16px;
    background: #fff;
    border-radius: 50%;
    top: 2px; left: 2px;
    transition: left .2s;
}
.toggle-row input:checked + .toggle-track .toggle-thumb { left: 18px; }

/* 统计状态 */
.stats-block { display: flex; flex-direction: column; gap: 6px; }
.stat-row    { display: flex; justify-content: space-between; font-size: 12px; }
.stat-val    { color: var(--accent); font-weight: 600; }
.alarm-count { color: var(--danger); }

/* ── 底部日志区 ── */
.log-section {
    height: 130px;
    flex-shrink: 0;
    background: var(--panel);
    border-top: 1px solid var(--border);
    display: flex;
    flex-direction: column;
}
.log-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 4px 14px;
    font-size: 12px;
    color: var(--text-muted);
    border-bottom: 1px solid var(--border);
}
.log-area {
    flex: 1;
    overflow-y: auto;
    padding: 6px 14px;
    font-size: 12px;
    font-family: 'Consolas', 'Courier New', monospace;
}
.log-entry { padding: 2px 0; line-height: 1.5; }
.log-info  { color: var(--text-muted); }
.log-ok    { color: var(--success); }
.log-warn  { color: var(--warning); }
.log-alarm { color: var(--alarm-color); font-weight: 700; }