/* iOS 26 液态玻璃效果 - Liquid Glass Design */

/* 全局背景渐变 - 增加层次感 */
body {
    background: linear-gradient(135deg, #f5f7fa 0%, #e4e8ec 50%, #f0f2f5 100%);
    background-attachment: fixed;
}

/* 基础液态玻璃效果 - 增强版 */
.glass {
    background: rgba(255, 255, 255, 0.65);
    backdrop-filter: blur(40px) saturate(200%);
    -webkit-backdrop-filter: blur(40px) saturate(200%);
    border: 1px solid rgba(255, 255, 255, 0.6);
    box-shadow: 
        0 8px 32px rgba(31, 38, 135, 0.15),
        inset 0 1px 0 rgba(255, 255, 255, 0.8),
        inset 0 -1px 0 rgba(255, 255, 255, 0.3);
    position: relative;
    overflow: hidden;
}

/* 玻璃反光效果 */
.glass::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.4),
        transparent
    );
    transition: left 0.5s;
}

.glass:hover::before {
    left: 100%;
}

/* 深色液态玻璃 */
.glass-dark {
    background: rgba(30, 30, 30, 0.75);
    backdrop-filter: blur(40px) saturate(200%);
    -webkit-backdrop-filter: blur(40px) saturate(200%);
    border: 1px solid rgba(255, 255, 255, 0.15);
    box-shadow: 
        0 8px 32px rgba(0, 0, 0, 0.4),
        inset 0 1px 0 rgba(255, 255, 255, 0.15);
}

/* 导航栏液态玻璃 - 固定在顶部 */
.glass-nav {
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(30px) saturate(200%);
    -webkit-backdrop-filter: blur(30px) saturate(200%);
    border-bottom: 1px solid rgba(255, 255, 255, 0.6);
    box-shadow: 
        0 4px 20px rgba(0, 0, 0, 0.08),
        inset 0 1px 0 rgba(255, 255, 255, 0.9);
}

/* 卡片液态玻璃 - 强烈效果 */
.glass-card {
    background: linear-gradient(
        135deg,
        rgba(255, 255, 255, 0.8) 0%,
        rgba(255, 255, 255, 0.4) 100%
    );
    backdrop-filter: blur(30px) saturate(220%);
    -webkit-backdrop-filter: blur(30px) saturate(220%);
    border: 1px solid rgba(255, 255, 255, 0.7);
    border-radius: 24px;
    box-shadow: 
        0 10px 40px rgba(31, 38, 135, 0.12),
        0 2px 8px rgba(0, 0, 0, 0.06),
        inset 0 1px 0 rgba(255, 255, 255, 0.9),
        inset 0 -1px 0 rgba(255, 255, 255, 0.4);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.glass-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 50%;
    background: linear-gradient(
        180deg,
        rgba(255, 255, 255, 0.5) 0%,
        transparent 100%
    );
    pointer-events: none;
}

.glass-card:hover {
    background: linear-gradient(
        135deg,
        rgba(255, 255, 255, 0.9) 0%,
        rgba(255, 255, 255, 0.5) 100%
    );
    transform: translateY(-6px) scale(1.02);
    box-shadow: 
        0 20px 60px rgba(31, 38, 135, 0.18),
        0 4px 12px rgba(0, 0, 0, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 1),
        inset 0 -1px 0 rgba(255, 255, 255, 0.5);
}

/* 按钮液态玻璃 */
.glass-btn {
    background: linear-gradient(
        135deg,
        rgba(255, 255, 255, 0.9) 0%,
        rgba(255, 255, 255, 0.5) 50%,
        rgba(255, 255, 255, 0.3) 100%
    );
    backdrop-filter: blur(20px) saturate(200%);
    -webkit-backdrop-filter: blur(20px) saturate(200%);
    border: 1px solid rgba(255, 255, 255, 0.8);
    border-radius: 16px;
    box-shadow: 
        0 4px 20px rgba(0, 0, 0, 0.1),
        0 2px 6px rgba(0, 0, 0, 0.05),
        inset 0 1px 0 rgba(255, 255, 255, 1),
        inset 0 -1px 0 rgba(255, 255, 255, 0.4);
    color: #1a1a1a;
    font-weight: 600;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.glass-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 60%;
    background: linear-gradient(
        180deg,
        rgba(255, 255, 255, 0.8) 0%,
        transparent 100%
    );
    pointer-events: none;
}

.glass-btn:hover {
    background: linear-gradient(
        135deg,
        rgba(255, 255, 255, 1) 0%,
        rgba(255, 255, 255, 0.7) 50%,
        rgba(255, 255, 255, 0.5) 100%
    );
    transform: translateY(-3px);
    box-shadow: 
        0 8px 30px rgba(0, 0, 0, 0.15),
        0 4px 10px rgba(0, 0, 0, 0.08),
        inset 0 1px 0 rgba(255, 255, 255, 1),
        inset 0 -1px 0 rgba(255, 255, 255, 0.5);
}

/* 浮动液态玻璃球 */
.glass-orb {
    background: radial-gradient(
        circle at 30% 30%,
        rgba(255, 255, 255, 0.9) 0%,
        rgba(255, 255, 255, 0.4) 40%,
        rgba(255, 255, 255, 0.1) 100%
    );
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border: 2px solid rgba(255, 255, 255, 0.6);
    border-radius: 50%;
    box-shadow: 
        0 10px 40px rgba(0, 0, 0, 0.15),
        inset 0 2px 10px rgba(255, 255, 255, 0.9),
        inset 0 -2px 6px rgba(0, 0, 0, 0.05);
}

/* 液态玻璃输入框 */
.glass-input {
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.8);
    border-radius: 16px;
    box-shadow: 
        inset 0 2px 8px rgba(0, 0, 0, 0.05),
        0 2px 8px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.glass-input:focus {
    background: rgba(255, 255, 255, 0.9);
    border-color: rgba(47, 107, 255, 0.6);
    box-shadow: 
        0 0 0 4px rgba(47, 107, 255, 0.15),
        inset 0 2px 8px rgba(0, 0, 0, 0.05),
        0 4px 12px rgba(47, 107, 255, 0.1);
    outline: none;
}

/* 底部液态玻璃 */
.glass-footer {
    background: linear-gradient(
        180deg,
        rgba(245, 247, 250, 0.95) 0%,
        rgba(255, 255, 255, 0.9) 100%
    );
    backdrop-filter: blur(30px) saturate(200%);
    -webkit-backdrop-filter: blur(30px) saturate(200%);
    border-top: 1px solid rgba(255, 255, 255, 0.7);
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.05);
}

/* 模态框液态玻璃 */
.glass-modal {
    background: linear-gradient(
        135deg,
        rgba(255, 255, 255, 0.9) 0%,
        rgba(255, 255, 255, 0.6) 100%
    );
    backdrop-filter: blur(40px) saturate(220%);
    -webkit-backdrop-filter: blur(40px) saturate(220%);
    border: 1px solid rgba(255, 255, 255, 0.8);
    border-radius: 32px;
    box-shadow: 
        0 25px 80px rgba(0, 0, 0, 0.2),
        0 10px 30px rgba(0, 0, 0, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 1),
        inset 0 -1px 0 rgba(255, 255, 255, 0.5);
}

/* 标签液态玻璃 */
.glass-tag {
    background: linear-gradient(
        135deg,
        rgba(255, 255, 255, 0.8) 0%,
        rgba(255, 255, 255, 0.4) 100%
    );
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.7);
    border-radius: 20px;
    box-shadow: 
        0 2px 8px rgba(0, 0, 0, 0.05),
        inset 0 1px 0 rgba(255, 255, 255, 0.9);
}

/* 渐变背景动画 */
@keyframes gradientShift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

.glass-gradient {
    background: linear-gradient(
        -45deg,
        rgba(255, 255, 255, 0.9),
        rgba(255, 255, 255, 0.5),
        rgba(240, 245, 255, 0.7),
        rgba(255, 255, 255, 0.5)
    );
    background-size: 400% 400%;
    animation: gradientShift 15s ease infinite;
}

/* 光泽效果 */
.glass-shine {
    position: relative;
    overflow: hidden;
}

.glass-shine::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(
        45deg,
        transparent 30%,
        rgba(255, 255, 255, 0.5) 50%,
        transparent 70%
    );
    animation: shine 4s infinite;
}

@keyframes shine {
    0% { transform: translateX(-100%) rotate(45deg); }
    100% { transform: translateX(100%) rotate(45deg); }
}

/* 浮动动画 */
@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}

.glass-float {
    animation: float 6s ease-in-out infinite;
}

/* 脉冲光晕 */
@keyframes pulse-glow {
    0%, 100% {
        box-shadow: 
            0 0 20px rgba(255, 255, 255, 0.4),
            0 0 40px rgba(255, 255, 255, 0.2);
    }
    50% {
        box-shadow: 
            0 0 30px rgba(255, 255, 255, 0.6),
            0 0 60px rgba(255, 255, 255, 0.3);
    }
}

.glass-pulse {
    animation: pulse-glow 3s ease-in-out infinite;
}

/* 响应式适配 */
@media (max-width: 768px) {
    .glass-card {
        border-radius: 20px;
    }
    
    .glass-btn {
        border-radius: 14px;
    }
    
    .glass-modal {
        border-radius: 24px;
    }
}

/* 深色模式适配 */
@media (prefers-color-scheme: dark) {
    body {
        background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #1a1a2e 100%);
    }
    
    .glass {
        background: rgba(30, 30, 40, 0.7);
        border-color: rgba(255, 255, 255, 0.15);
    }
    
    .glass-nav {
        background: rgba(20, 20, 30, 0.85);
        border-color: rgba(255, 255, 255, 0.1);
    }
    
    .glass-card {
        background: linear-gradient(
            135deg,
            rgba(40, 40, 50, 0.8) 0%,
            rgba(30, 30, 40, 0.5) 100%
        );
        border-color: rgba(255, 255, 255, 0.15);
    }
    
    .glass-card:hover {
        background: linear-gradient(
            135deg,
            rgba(50, 50, 60, 0.9) 0%,
            rgba(40, 40, 50, 0.6) 100%
        );
    }
}