@import url('https://cdn.jsdelivr.net/npm/tailwindcss@2.2.19/dist/tailwind.min.css');

:root {
    --water-bg: #e6f7ff;
    --water-light: #ffffff;
    --water-deep: #0077b6;
    --water-cyan: #00b4d8;
    --water-text: #03045e;
    --water-muted: #5c677d;
}

body {
    background-color: var(--water-bg);
    color: var(--water-text);
    font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
    overflow-x: hidden;
    position: relative;
}

/* 顶部导航 */
.water-nav {
    background: rgba(255, 255, 255, 0.85);
    -webkit-backdrop-filter: blur(12px);
    backdrop-filter: blur(12px);
    transform: translateZ(0);
    will-change: backdrop-filter, transform;
    box-shadow: 0 4px 30px rgba(0, 180, 216, 0.1);
}

/* 卡片 - 涟漪玻璃感 */
.water-card {
    background: rgba(255, 255, 255, 0.7);
    -webkit-backdrop-filter: blur(16px);
    backdrop-filter: blur(16px);
    transform: translateZ(0);
    will-change: backdrop-filter, transform;
    border: 1px solid rgba(255, 255, 255, 0.5);
    border-radius: 24px;
    box-shadow: 0 10px 40px rgba(0, 119, 182, 0.08);
    will-change: transform, box-shadow, border-color;
    transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275), box-shadow 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275), background-color 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275), border-color 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275), opacity 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275), color 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.water-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 50px rgba(0, 119, 182, 0.15);
    background: rgba(255, 255, 255, 0.9);
}

/* 按钮与涟漪特效 */
.ripple-btn {
    background: linear-gradient(135deg, var(--water-cyan), var(--water-deep));
    color: #ffffff;
    border-radius: 9999px;
    position: relative;
    overflow: hidden;
    will-change: transform, box-shadow, border-color;
    transition: transform 0.3s ease, box-shadow 0.3s ease, background-color 0.3s ease, border-color 0.3s ease, opacity 0.3s ease, color 0.3s ease;
    box-shadow: 0 8px 20px rgba(0, 119, 182, 0.3);
    border: none;
    z-index: 1;
}

.ripple-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 25px rgba(0, 119, 182, 0.4);
    color: #ffffff;
}

.ripple-btn-outline {
    background: transparent;
    color: var(--water-deep);
    border: 2px solid var(--water-cyan);
    border-radius: 9999px;
    position: relative;
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease, background-color 0.3s ease, border-color 0.3s ease, opacity 0.3s ease, color 0.3s ease;
}

.ripple-btn-outline:hover {
    background: rgba(0, 180, 216, 0.1);
    color: var(--water-deep);
}

/* 点击水波纹核心 CSS */
.ripple {
    position: absolute;
    border-radius: 50%;
    transform: scale(0);
    animation: ripple-anim 0.6s linear;
    background-color: rgba(255, 255, 255, 0.6);
    pointer-events: none;
    transform-origin: center;
}

@keyframes ripple-anim {
    to {
        transform: scale(2.5);
        opacity: 0;
    }
}

/* 背景波浪装饰 */
.wave-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
    pointer-events: none;
}
.wave-bg::before, .wave-bg::after {
    content: '';
    position: absolute;
    width: 300vw;
    height: 300vw;
    top: -150vw;
    left: -50vw;
    background: radial-gradient(circle at 50% 50%, rgba(0, 180, 216, 0.1) 0%, transparent 60%);
    animation: wave-rotate 20s infinite linear;
}
.wave-bg::after {
    background: radial-gradient(circle at 50% 50%, rgba(0, 119, 182, 0.05) 0%, transparent 60%);
    animation-direction: reverse;
    animation-duration: 30s;
}
@keyframes wave-rotate {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* 博客区背景 */
.blog-bg {
    background: linear-gradient(to bottom, #f0fbff, #ffffff);
}

.text-water-deep {
    color: var(--water-deep);
}
.text-water-cyan {
    color: var(--water-cyan);
}

/* 隐藏图片破损时的边框 */
img {
    border-radius: 20px;
    object-fit: cover;
}