/* 全屏 3D 场景样式 */
html, body {
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    background-color: #e8f4f8;
    font-family: var(--font-sans, 'Inter', sans-serif);
    transition: background 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 季节背景色 */
body.spring { background-color: #fff0f5; }
body.summer { background-color: #f0fff0; }
body.autumn { background-color: #fff8dc; }
body.winter { background-color: #f0f8ff; }

/* 夜间模式叠加 */
body.night-mode { background-color: #0a0d15; }
body.night-mode.spring { background-color: #1a1a2e; }
body.night-mode.summer { background-color: #0a1a0a; }
body.night-mode.autumn { background-color: #1a1510; }
body.night-mode.winter { background-color: #0a0a15; }

/* 隐藏默认布局容器的边距 */
.c-site-container.home-3d {
    padding: 0;
    margin: 0;
    max-width: none;
    width: 100%;
    height: 100%;
}

/* Canvas 全屏覆盖 */
canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: block;
}
.app-loading canvas {
    opacity: 0;
    transition: opacity 0.6s ease;
}
body:not(.app-loading) canvas {
    opacity: 1;
}
.mobile-mode {
    background: radial-gradient(circle at 20% 20%, rgba(255,255,255,0.15), transparent),
                radial-gradient(circle at 80% 0%, rgba(var(--tech-primary-rgb), 0.15), transparent),
                linear-gradient(145deg, var(--bg-dark), var(--bg-dark-secondary) 40%, var(--bg-dark) 80%);
    color: var(--text-inverse);
    overflow: hidden;
    min-height: 100vh;
}
.mobile-dock {
    position: fixed;
    left: 50%;
    bottom: 24px;
    transform: translateX(-50%);
    width: calc(100% - 40px);
    max-width: 400px;
    padding: 16px 20px;
    border-radius: 28px;
    /* 日间模式：深色背景 + 主题色边缘辉光 */
    background: linear-gradient(
        145deg,
        rgba(13, 17, 23, 0.85),
        rgba(22, 27, 34, 0.9)
    );
    box-shadow: var(--shadow-xl),
                inset 0 1px 0 var(--glass-border),
                0 0 0 1px rgba(var(--tech-primary-rgb), 0.2),
                0 0 30px rgba(var(--tech-primary-rgb), 0.15);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    display: flex;
    justify-content: space-around;
    align-items: center;
    gap: 8px;
    z-index: 2000;
    opacity: 0;
    animation: dockFadeIn 0.8s cubic-bezier(0.4, 0, 0.2, 1) 0.4s forwards;
    transition: background 0.5s ease, box-shadow 0.5s ease;
}
@keyframes dockFadeIn {
    from {
        opacity: 0;
        transform: translateX(-50%) translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
}
.mobile-dock__item {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 64px;
    height: 64px;
    padding: 0;
    border-radius: 18px;
    color: var(--text-inverse);
    text-decoration: none;
    background: linear-gradient(145deg, var(--glass-bg-strong), var(--glass-bg));
    box-shadow:
        inset 0 1px 0 var(--glass-border),
        var(--shadow-md),
        0 0 0 1px rgba(var(--tech-primary-rgb), 0.1);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: visible;
    perspective: 1000px;
}

/* Hover 效果（桌面端）和触摸反馈 */
.mobile-dock__item:hover {
    transform: scale(1.1) translateY(-4px);
    box-shadow:
        inset 0 1px 0 rgba(255, 255, 255, 0.35),
        var(--shadow-lg),
        0 0 0 2px rgba(var(--tech-primary-rgb), 0.3),
        var(--glow-primary);
    background: linear-gradient(145deg, rgba(var(--tech-primary-rgb), 0.2), var(--glass-bg-strong));
}

.mobile-dock__item:active {
    transform: scale(0.95) translateY(0);
    box-shadow:
        inset 0 1px 0 var(--glass-border),
        var(--shadow-sm),
        0 0 0 1px rgba(var(--tech-primary-rgb), 0.1);
}

/* 添加点击涟漪效果 */
.mobile-dock__item::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, rgba(var(--tech-primary-rgb), 0.4) 0%, transparent 70%);
    border-radius: 50%;
    transform: translate(-50%, -50%) scale(0);
    opacity: 0;
    transition: transform 0.5s ease, opacity 0.5s ease;
}

.mobile-dock__item:active::before {
    transform: translate(-50%, -50%) scale(1.5);
    opacity: 1;
    transition: transform 0s, opacity 0s;
}

.mobile-dock__icon {
    font-size: 36px;
    line-height: 1;
    transform-style: preserve-3d;
    animation: iconFloat 4s ease-in-out infinite;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.3));
    transition: filter 0.3s ease;
}

/* Hover 时图标发光 */
.mobile-dock__item:hover .mobile-dock__icon {
    animation: iconFloatFast 2s ease-in-out infinite;
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.4))
            drop-shadow(0 0 12px rgba(var(--tech-primary-rgb), 0.8));
}

/* 每个图标不同的延迟，产生错落感 */
.mobile-dock__item:nth-child(1) .mobile-dock__icon {
    animation-delay: 0s;
}
.mobile-dock__item:nth-child(2) .mobile-dock__icon {
    animation-delay: -1s;
}
.mobile-dock__item:nth-child(3) .mobile-dock__icon {
    animation-delay: -2s;
}
.mobile-dock__item:nth-child(4) .mobile-dock__icon {
    animation-delay: -3s;
}

/* 伪 3D 浮动旋转动画 */
@keyframes iconFloat {
    0%, 100% {
        transform: rotateX(0deg) rotateY(0deg) translateY(0);
    }
    25% {
        transform: rotateX(5deg) rotateY(-8deg) translateY(-2px);
    }
    50% {
        transform: rotateX(0deg) rotateY(0deg) translateY(0);
    }
    75% {
        transform: rotateX(-5deg) rotateY(8deg) translateY(-2px);
    }
}

/* Hover 时加速的浮动动画 */
@keyframes iconFloatFast {
    0%, 100% {
        transform: rotateX(0deg) rotateY(0deg) translateY(0) scale(1);
    }
    25% {
        transform: rotateX(8deg) rotateY(-12deg) translateY(-3px) scale(1.05);
    }
    50% {
        transform: rotateX(0deg) rotateY(0deg) translateY(0) scale(1);
    }
    75% {
        transform: rotateX(-8deg) rotateY(12deg) translateY(-3px) scale(1.05);
    }
}

/* 隐藏文字标签（极客风格） */
.mobile-dock__text {
    display: none;
}

/* ============================================
   暗色模式 Dock 样式（夜晚场景）
   ============================================ */
body.night-mode .mobile-dock {
    background: linear-gradient(
        145deg,
        rgba(10, 13, 21, 0.92),
        rgba(15, 20, 30, 0.95)
    );
    box-shadow: var(--shadow-xl),
                inset 0 1px 0 rgba(255, 255, 255, 0.08),
                0 0 0 1px rgba(255, 214, 153, 0.15),
                0 0 40px rgba(255, 214, 153, 0.1);
}

body.night-mode .mobile-dock__item {
    background: linear-gradient(145deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.03));
    box-shadow:
        inset 0 1px 0 rgba(255, 255, 255, 0.12),
        var(--shadow-md),
        0 0 0 1px rgba(255, 214, 153, 0.08);
}

body.night-mode .mobile-dock__item:hover {
    box-shadow:
        inset 0 1px 0 rgba(255, 255, 255, 0.2),
        var(--shadow-lg),
        0 0 0 2px rgba(255, 214, 153, 0.25),
        0 0 20px rgba(255, 214, 153, 0.3);
    background: linear-gradient(145deg, rgba(255, 214, 153, 0.15), rgba(255, 255, 255, 0.08));
}

body.night-mode .mobile-dock__item:hover .mobile-dock__icon {
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.5))
            drop-shadow(0 0 12px rgba(255, 214, 153, 0.6));
}

#loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 季节加载屏幕背景 */
#loading-screen.spring {
    background: linear-gradient(135deg, #FFB7C5 0%, #FFC0CB 50%, #87CEEB 100%);
}
#loading-screen.summer {
    background: linear-gradient(135deg, #32CD32 0%, #87CEEB 50%, #1E90FF 100%);
}
#loading-screen.autumn {
    background: linear-gradient(135deg, #FF8C00 0%, #FFD700 50%, #CD853F 100%);
}
#loading-screen.winter {
    background: linear-gradient(135deg, #B0C4DE 0%, #E6E6FA 50%, #ADD8E6 100%);
}

#loading-screen.fade-out {
    opacity: 0;
    pointer-events: none;
}
.loader-content {
    text-align: center;
    padding: 32px 40px;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
    min-width: 340px;
    max-width: 420px;
    backdrop-filter: blur(10px);
}

/* 季节图标 */
.season-icon {
    font-size: 64px;
    margin: 0 0 20px 0;
    line-height: 1;
    animation: float 3s ease-in-out infinite;
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.1));
}

@keyframes float {
    0%, 100% { transform: translateY(0) scale(1); }
    50% { transform: translateY(-12px) scale(1.05); }
}

.loader-content h2 {
    margin: 0 0 20px 0;
    font-size: 22px;
    font-weight: 600;
    color: #1a1a1a;
    letter-spacing: -0.3px;
    line-height: 1.3;
}
.progress-bar {
    position: relative;
    width: 100%;
    height: 8px;
    background: rgba(102, 126, 234, 0.15);
    border-radius: 20px;
    overflow: hidden;
    margin-bottom: 16px;
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.1);
}
.progress {
    width: 0%;
    height: 100%;
    background: linear-gradient(90deg, #667eea 0%, #764ba2 100%);
    border-radius: 20px;
    transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

/* 季节进度条颜色 */
.spring .progress {
    background: linear-gradient(90deg, #FFB7C5 0%, #FF69B4 100%);
}
.summer .progress {
    background: linear-gradient(90deg, #32CD32 0%, #1E90FF 100%);
}
.autumn .progress {
    background: linear-gradient(90deg, #FF8C00 0%, #FF4500 100%);
}
.winter .progress {
    background: linear-gradient(90deg, #ADD8E6 0%, #4169E1 100%);
}
.progress::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg,
        transparent 0%,
        rgba(255, 255, 255, 0.3) 50%,
        transparent 100%);
    animation: shimmer 1.5s infinite;
}
@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}
#loading-text {
    color: #666;
    font-size: 15px;
    font-weight: 500;
    margin: 0;
    letter-spacing: 0.3px;
}
#loading-text .percentage {
    font-weight: 700;
    color: #667eea;
    font-size: 16px;
    display: inline-block;
    margin-left: 4px;
}

/* 季节百分比颜色 */
.spring #loading-text .percentage { color: #FF69B4; }
.summer #loading-text .percentage { color: #32CD32; }
.autumn #loading-text .percentage { color: #FF8C00; }
.winter #loading-text .percentage { color: #4169E1; }
#label {
    position: absolute;
    background: rgba(255, 255, 255, 0.9);
    padding: 5px 10px;
    border-radius: 4px;
    font-size: 12px;
    pointer-events: none;
    display: none;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    transform: translate(-50%, calc(-100% - 10px));
    white-space: nowrap;
}

/* ============================================
   响应式优化
   ============================================ */

@media (max-width: 600px) {
    .loader-content {
        min-width: 280px;
        padding: 24px 30px;
    }

    .season-icon {
        font-size: 48px;
        margin-bottom: 16px;
    }

    .loader-content h2 {
        font-size: 18px;
        margin-bottom: 16px;
    }

    #loading-text {
        font-size: 13px;
    }

    #loading-text .percentage {
        font-size: 14px;
    }
}