/* ==========================================
   立体画梦工坊 - 共享样式表 (太空童话糖果风)
   ========================================== */

:root {
    /* 治愈系糖果色盘 */
    --color-pink: #FF9EAA;      /* 草莓云朵粉 */
    --color-gold: #FFD700;      /* 阳光金 */
    --color-green: #6BCB77;     /* 草芽嫩绿 */
    --color-blue: #4FC3F7;      /* 银河浅蓝 */
    --color-purple: #B39DDB;    /* 薰衣草紫 */
    --color-bg-dark: #1E1B29;   /* 深空底色 */
    --color-bg-light: #F5F3F8;  /* 浅紫罗兰底色 */
    
    /* 渐变色组合 */
    --grad-primary: linear-gradient(135deg, #4FC3F7, #FF9EAA); /* 银河蓝→草莓粉 */
    --grad-gold-pink: linear-gradient(135deg, #FFD700, #FF9EAA);
    --grad-green-blue: linear-gradient(135deg, #6BCB77, #4FC3F7);
    --grad-sky: linear-gradient(180deg, #1E1B29 0%, #2D283E 50%, #4B3F72 100%); /* 星空背景 */

    /* 字体栈 */
    --font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
}

/* 基础重置与滚动条 */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: var(--font-family);
    user-select: none;
    -webkit-user-drag: none;
}

body {
    background: var(--grad-sky);
    color: #FFFFFF;
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
}

/* 梦幻星空背景 */
.stars-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
}

.star {
    position: absolute;
    background: #FFF;
    border-radius: 50%;
    animation: twinkle 3s infinite ease-in-out;
}

@keyframes twinkle {
    0%, 100% { opacity: 0.3; transform: scale(0.8); }
    50% { opacity: 1; transform: scale(1.2); }
}

/* 顶部导航与页眉 */
.main-header {
    text-align: center;
    padding: 2.5rem 1rem 1.5rem;
    position: relative;
    z-index: 10;
}

.logo-area {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    margin-bottom: 0.5rem;
}

.logo-icon {
    font-size: 2.5rem;
    animation: float 3s ease-in-out infinite;
}

.gradient-text {
    font-size: 3rem;
    font-weight: 900;
    background: var(--grad-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 0 4px 15px rgba(79, 195, 247, 0.3);
    letter-spacing: 2px;
}

.subtitle {
    font-size: 1.1rem;
    color: #E0DBEC;
    text-shadow: 0 2px 4px rgba(0,0,0,0.3);
}

/* 主容器 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem 3rem;
    position: relative;
    z-index: 10;
}

/* 核心功能入口卡片 */
.entrance-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2.5rem;
    margin-bottom: 4rem;
}

/* 果冻卡片 (毛玻璃效果) */
.card {
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 2px solid rgba(255, 255, 255, 0.15);
    border-radius: 24px;
    padding: 2.5rem 2rem;
    text-align: center;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2), 0 0 0 1px rgba(255, 255, 255, 0.05);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.card-icon {
    font-size: 4rem;
    margin-bottom: 1.5rem;
    transition: transform 0.3s ease;
}

.card h2 {
    font-size: 1.6rem;
    color: #FFFFFF;
    margin-bottom: 1rem;
    text-shadow: 0 2px 5px rgba(0,0,0,0.2);
}

.card p {
    font-size: 0.95rem;
    color: #D1C4E9;
    line-height: 1.6;
    margin-bottom: 2rem;
}

/* 果冻弹动效果 */
.jelly-card:hover {
    transform: translateY(-14px) scale(1.04);
    border-color: var(--color-pink);
    box-shadow: 0 20px 50px rgba(255, 158, 170, 0.4), 0 0 0 1px rgba(255, 255, 255, 0.15);
}

.jelly-card:hover .card-icon {
    transform: scale(1.2) rotate(8deg);
}

/* 超大圆角主按钮 (银河蓝→草莓粉) */
.btn {
    display: inline-block;
    padding: 1rem 2.5rem;
    border-radius: 40px;
    font-size: 1.1rem;
    font-weight: bold;
    text-decoration: none;
    color: #FFFFFF;
    border: none;
    cursor: pointer;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--grad-primary);
    box-shadow: 0 8px 25px rgba(79, 195, 247, 0.4);
}

.btn-secondary {
    background: var(--grad-gold-pink);
    box-shadow: 0 8px 25px rgba(255, 215, 0, 0.3);
}

.btn-accent {
    background: var(--grad-green-blue);
    box-shadow: 0 8px 25px rgba(107, 203, 119, 0.3);
}

.btn:hover {
    transform: translateY(-5px) scale(1.08);
    box-shadow: 0 12px 30px rgba(255, 158, 170, 0.5);
}

.btn:active {
    transform: translateY(-1px) scale(0.98);
}

/* 顶部返回按钮 */
.back-home {
    position: absolute;
    top: 1.5rem;
    left: 2rem;
    z-index: 100;
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 0.6rem 1.2rem;
    background: rgba(255, 255, 255, 0.12);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 30px;
    color: #FFFFFF;
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: bold;
    transition: all 0.3s ease;
}

.back-home:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: translateX(-3px);
    box-shadow: 0 5px 15px rgba(255, 255, 255, 0.1);
}

/* 作品展厅 */
.gallery-section {
    margin-top: 2rem;
}

.section-title {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 2rem;
    color: #FFFFFF;
    text-shadow: 0 2px 10px rgba(0,0,0,0.3);
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 2rem;
}

.gallery-item {
    background: rgba(255, 255, 255, 0.07);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1.5px solid rgba(255, 255, 255, 0.12);
    border-radius: 24px;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    box-shadow: 0 8px 20px rgba(0,0,0,0.2);
}

.gallery-item:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 16px 40px rgba(79, 195, 247, 0.3);
    border-color: var(--color-blue);
}

.gallery-preview {
    height: 180px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 5rem;
    text-shadow: 0 4px 10px rgba(0,0,0,0.3);
}

.gallery-info {
    padding: 1.2rem;
    background: rgba(0,0,0,0.2);
}

.gallery-info h3 {
    font-size: 1.1rem;
    color: #FFF;
    margin-bottom: 0.3rem;
}

.gallery-info span {
    font-size: 0.85rem;
    color: #B39DDB;
}

/* 底部 */
.main-footer {
    text-align: center;
    padding: 2.5rem 1rem 2rem;
    color: #7E7A94;
    font-size: 0.9rem;
    position: relative;
    z-index: 10;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    background: linear-gradient(180deg, transparent, rgba(255, 255, 255, 0.02));
}

/* 动画定义 */
@keyframes float {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-10px) rotate(5deg); }
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

/* 响应式微调 */
@media (max-width: 768px) {
    .gradient-text { font-size: 2.2rem; }
    .container { padding: 1rem 1rem 2rem; }
    .entrance-grid { gap: 1.5rem; }
    .back-home { top: 1rem; left: 1rem; }
}