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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(135deg, #0f0f1a 0%, #1a1a2e 100%);
    min-height: 100vh;
    color: #fff;
}

.container {
    max-width: 1500px;
    margin: 0 auto;
    padding: 15px;
}

header {
    text-align: center;
    padding: 20px 0;
}

header h1 {
    font-size: 2rem;
    margin-bottom: 8px;
    background: linear-gradient(90deg, #00d4ff, #7b2ff7);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

header p {
    color: #888;
    font-size: 1rem;
}

.main-content {
    display: grid;
    grid-template-columns: 320px 1fr;
    gap: 20px;
    margin-top: 15px;
}

@media (max-width: 1000px) {
    .main-content {
        grid-template-columns: 1fr;
    }
}

.control-panel {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 16px;
    padding: 20px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    height: fit-content;
}

.control-section {
    margin-bottom: 20px;
}

.control-section:last-child {
    margin-bottom: 0;
}

.control-section h3 {
    font-size: 0.9rem;
    color: #00d4ff;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.control-section h3::before {
    content: '';
    width: 3px;
    height: 14px;
    background: #00d4ff;
    border-radius: 2px;
}

.input-group {
    margin-bottom: 12px;
}

.input-group label {
    display: block;
    font-size: 0.8rem;
    color: #aaa;
    margin-bottom: 6px;
}

.input-group label small {
    color: #666;
    font-weight: normal;
}

.input-group input[type="range"] {
    width: 100%;
    height: 6px;
    border-radius: 3px;
    background: #333;
    outline: none;
    -webkit-appearance: none;
}

.input-group input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: linear-gradient(135deg, #00d4ff, #7b2ff7);
    cursor: pointer;
}

.input-value {
    display: flex;
    justify-content: space-between;
    margin-top: 5px;
    font-size: 0.75rem;
    color: #555;
}

.input-value .current {
    color: #00d4ff;
    font-weight: bold;
    font-size: 1rem;
}

.tv-sizes {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
}

.tv-size-btn {
    padding: 10px 5px;
    border: 2px solid #333;
    border-radius: 10px;
    background: transparent;
    color: #fff;
    font-size: 0.95rem;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s;
}

.tv-size-btn:hover {
    border-color: #00d4ff;
    background: rgba(0, 212, 255, 0.1);
}

.tv-size-btn.active {
    border-color: #00d4ff;
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.2), rgba(123, 47, 247, 0.2));
    box-shadow: 0 0 15px rgba(0, 212, 255, 0.3);
}

.tv-size-btn span {
    display: block;
    font-size: 0.65rem;
    color: #666;
    margin-top: 2px;
    font-weight: normal;
}

.visualization {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.view-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}

@media (max-width: 800px) {
    .view-container {
        grid-template-columns: 1fr;
    }
}

.view-panel {
    background: rgba(255, 255, 255, 0.03);
    border-radius: 16px;
    padding: 15px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.view-panel h4 {
    font-size: 0.85rem;
    color: #888;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.view-panel h4 .icon {
    font-size: 1.1rem;
}

.canvas-wrapper {
    position: relative;
    width: 100%;
    background: #0a0a15;
    border-radius: 12px;
    overflow: hidden;
}

canvas {
    display: block;
    width: 100%;
}

.angle-badge {
    position: absolute;
    top: 10px;
    right: 10px;
    background: rgba(0, 0, 0, 0.8);
    padding: 8px 12px;
    border-radius: 8px;
    font-size: 0.8rem;
}

.angle-badge .value {
    font-size: 1.2rem;
    font-weight: bold;
    color: #00d4ff;
}

.angle-badge.good .value { color: #4ade80; }
.angle-badge.warning .value { color: #fbbf24; }
.angle-badge.bad .value { color: #f87171; }

.pov-container {
    background: rgba(255, 255, 255, 0.03);
    border-radius: 16px;
    padding: 15px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    position: relative;
}

.pov-container.fullscreen {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1000;
    border-radius: 0;
    background: #0a0a15;
    padding: 20px;
    display: flex;
    flex-direction: column;
}

.pov-container.fullscreen .pov-view {
    flex: 1;
    height: auto;
}

.pov-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
    flex-wrap: wrap;
    gap: 10px;
}

.pov-header h4 {
    font-size: 0.85rem;
    color: #888;
    display: flex;
    align-items: center;
    gap: 8px;
}

.pov-header-right {
    display: flex;
    align-items: center;
    gap: 15px;
}

.pov-stats {
    display: flex;
    gap: 15px;
    font-size: 0.75rem;
}

.pov-stat {
    display: flex;
    align-items: center;
    gap: 5px;
    padding: 4px 10px;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 20px;
}

.pov-stat .stat-value {
    color: #00d4ff;
    font-weight: bold;
}

.fullscreen-btn {
    padding: 6px 12px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 6px;
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
    font-size: 0.8rem;
    cursor: pointer;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    gap: 5px;
}

.fullscreen-btn:hover {
    background: rgba(0, 212, 255, 0.2);
    border-color: #00d4ff;
}

/* 3D POV 优化部分 */
.pov-view {
    position: relative;
    width: 100%;
    height: 350px;
    background: linear-gradient(180deg, #1a1a3a 0%, #0f0f25 100%);
    border-radius: 12px;
    overflow: hidden;
    /* 关键: 开启 3D 透视 */
    perspective: 1000px;
}

.pov-room {
    position: absolute;
    width: 100%;
    height: 100%;
}

/* 地板 */
.pov-floor {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 30%;
    background: linear-gradient(0deg, #151525 0%, transparent 100%);
    /* 简单的地板网格效果 */
    background-image: 
        linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    perspective-origin: bottom;
    transform-origin: bottom;
    transform: rotateX(10deg); /* 轻微的倾斜增加深度感 */
}

.pov-wall {
    position: absolute;
    background: linear-gradient(180deg, #2a2a4a 0%, #1f1f3a 100%);
    border: 2px solid rgba(255, 255, 255, 0.1);
    border-radius: 4px;
    transition: all 0.4s ease;
    box-shadow: inset 0 0 50px rgba(0, 0, 0, 0.3);
    /* 3D 属性 */
    transform-style: preserve-3d;
}

.pov-wall-label {
    position: absolute;
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.6);
    pointer-events: none;
    background: rgba(0, 0, 0, 0.5);
    padding: 2px 6px;
    border-radius: 3px;
}

.pov-wall-width-label {
    bottom: -22px;
    left: 50%;
    transform: translateX(-50%);
}

.pov-wall-height-label {
    right: -40px;
    top: 50%;
    transform: translateY(-50%);
}

/* 电视 3D 效果增强 */
.pov-tv {
    position: absolute;
    background: #080808;
    border-radius: 2px;
    display: flex;
    justify-content: center;
    align-items: center;
    border: 3px solid #111;
    z-index: 10;
    transition: all 0.4s ease;
    
    /* 关键: 3D 浮动效果 */
    transform: translateZ(15px); 
    box-shadow: 
        0 15px 40px rgba(0, 0, 0, 0.6), /* 远阴影 */
        0 0 0 1px #222; /* 边框高光 */
}

/* 屏幕反光模拟 */
.pov-tv-screen {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #1a1a2e, #252540);
    display: flex;
    justify-content: center;
    align-items: center;
    color: #444;
    font-size: 0.9rem;
    position: relative;
    overflow: hidden;
}

/* 玻璃质感反光 */
.pov-tv-screen::after {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: linear-gradient(120deg, rgba(255,255,255,0) 30%, rgba(255,255,255,0.05) 40%, rgba(255,255,255,0) 50%);
    pointer-events: none;
    z-index: 2;
}

.pov-tv-screen video {
    width: 100%;
    height: 100%;
    object-fit: fill;
}

.pov-tv-label {
    position: absolute;
    bottom: -28px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, #00d4ff, #7b2ff7);
    padding: 4px 12px;
    border-radius: 15px;
    font-size: 0.75rem;
    font-weight: bold;
    white-space: nowrap;
    z-index: 11;
}

/* 人像参照物样式 */
.human-ref {
    position: absolute;
    bottom: 0;
    left: 5%; /* 站在墙左侧 */
    width: 0; /* 宽度由JS动态计算比例 */
    height: 0; /* 高度由JS动态计算比例 */
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 100 250' fill='%23ffffff' opacity='0.3'%3E%3Ccircle cx='50' cy='30' r='20'/%3E%3Cpath d='M20,60 Q50,50 80,60 Q90,70 85,130 L90,240 L60,240 L50,150 L40,240 L10,240 L15,130 Q10,70 20,60 Z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-size: contain;
    background-position: bottom center;
    z-index: 5;
    transition: all 0.4s ease;
    pointer-events: none;
    opacity: 0; /* 默认隐藏 */
    /* 让人像稍微离开墙面一点 */
    transform: translateZ(50px);
    filter: drop-shadow(5px 5px 5px rgba(0,0,0,0.5));
}

.human-ref.visible {
    opacity: 1;
}

.human-label {
    position: absolute;
    top: -20px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 0.7rem;
    color: rgba(255,255,255,0.4);
    white-space: nowrap;
}

/* 开关样式 */
.toggle-switch {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.8rem;
    color: #888;
    cursor: pointer;
    margin-right: 15px;
}

.toggle-switch input {
    display: none;
}

.toggle-slider {
    width: 36px;
    height: 20px;
    background: #333;
    border-radius: 20px;
    position: relative;
    transition: 0.3s;
}

.toggle-slider::before {
    content: '';
    position: absolute;
    width: 16px;
    height: 16px;
    background: #fff;
    border-radius: 50%;
    top: 2px;
    left: 2px;
    transition: 0.3s;
}

.toggle-switch input:checked + .toggle-slider {
    background: #00d4ff;
}

.toggle-switch input:checked + .toggle-slider::before {
    transform: translateX(16px);
}

.pov-crosshair {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    pointer-events: none;
    opacity: 0.3;
    z-index: 5;
}

.pov-crosshair::before,
.pov-crosshair::after {
    content: '';
    position: absolute;
    background: #fff;
}

.pov-crosshair::before {
    width: 1px;
    height: 30px;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
}

.pov-crosshair::after {
    width: 30px;
    height: 1px;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
    gap: 10px;
    margin-top: 15px;
}

.info-card {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 10px;
    padding: 12px;
    text-align: center;
}

.info-card .label {
    font-size: 0.7rem;
    color: #666;
    margin-bottom: 4px;
}

.info-card .value {
    font-size: 1.1rem;
    font-weight: bold;
}

.info-card .value.good { color: #4ade80; }
.info-card .value.warning { color: #fbbf24; }
.info-card .value.bad { color: #f87171; }

.recommendation {
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.1), rgba(123, 47, 247, 0.1));
    border-radius: 12px;
    padding: 15px;
    border: 1px solid rgba(0, 212, 255, 0.2);
}

.recommendation h4 {
    color: #00d4ff;
    margin-bottom: 8px;
    font-size: 0.9rem;
}

.recommendation p {
    color: #bbb;
    line-height: 1.5;
    font-size: 0.9rem;
}

.recommendation .rec-size {
    font-size: 1.2rem;
    font-weight: bold;
    color: #4ade80;
}

.video-controls {
    background: rgba(0, 0, 0, 0.3);
    border-radius: 10px;
    padding: 12px;
}

.video-controls label {
    display: block;
    margin-bottom: 8px;
    color: #888;
    font-size: 0.8rem;
}

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

.video-input-group input[type="text"] {
    flex: 1;
    min-width: 120px;
    padding: 8px 12px;
    border: 1px solid #333;
    border-radius: 6px;
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
    font-size: 0.85rem;
}

.btn {
    padding: 8px 15px;
    border: none;
    border-radius: 6px;
    background: linear-gradient(135deg, #00d4ff, #7b2ff7);
    color: #fff;
    font-weight: bold;
    cursor: pointer;
    font-size: 0.85rem;
    transition: all 0.3s;
}

.btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 15px rgba(0, 212, 255, 0.4);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.15);
}

.legend {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    margin-top: 10px;
    font-size: 0.75rem;
    color: #888;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 5px;
}

.legend-color {
    width: 12px;
    height: 12px;
    border-radius: 3px;
}

.legend-color.eye { background: #ff6b6b; }
.legend-color.tv { background: #4dabf7; }
.legend-color.fov { background: rgba(0, 212, 255, 0.3); border: 1px solid #00d4ff; }
.legend-color.optimal { background: rgba(74, 222, 128, 0.3); border: 1px solid #4ade80; }

.exit-fullscreen-hint {
    display: none;
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(0, 0, 0, 0.7);
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.8rem;
    color: #888;
    z-index: 100;
}

.pov-container.fullscreen .exit-fullscreen-hint {
    display: block;
}