@import url('https://fonts.googleapis.com/css2?family=Noto+Serif+SC:wght@300;400;600;700&family=Noto+Sans+SC:wght@300;400;500;700&display=swap');

:root {
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-tertiary: #1a1a26;
    --bg-card: #1e1e2e;
    --bg-hover: #252538;
    
    --text-primary: #e8e8f0;
    --text-secondary: #a8a8b8;
    --text-muted: #6f6f7f;
    
    --fire: #ff4444;
    --fire-glow: rgba(255, 68, 68, 0.3);
    --wind: #44d4ff;
    --wind-glow: rgba(68, 212, 255, 0.3);
    --earth: #ffaa44;
    --earth-glow: rgba(255, 170, 68, 0.3);
    --water: #4488ff;
    --water-glow: rgba(68, 136, 255, 0.3);
    
    --accent: #c89b3c;
    --accent-dim: #8b6f2b;
    
    --border: rgba(200, 155, 60, 0.2);
    --border-hover: rgba(200, 155, 60, 0.5);
    
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: 'Noto Sans SC', sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* 背景装饰 */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 50%, var(--fire-glow) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, var(--wind-glow) 0%, transparent 50%),
        radial-gradient(circle at 50% 80%, var(--water-glow) 0%, transparent 50%);
    opacity: 0.15;
    pointer-events: none;
    z-index: 0;
}

/* 容器 */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
    position: relative;
    z-index: 1;
}

/* 顶部导航栏 */
header {
    background: rgba(18, 18, 26, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-md);
}

nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.5rem 2rem;
    max-width: 1400px;
    margin: 0 auto;
}

.logo {
    font-family: 'Noto Serif SC', serif;
    font-size: 1.8rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--accent) 0%, #ffd700 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: 0.1em;
    text-shadow: 0 0 30px var(--accent-dim);
}

.nav-links {
    display: flex;
    gap: 2rem;
    list-style: none;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    padding: 0.5rem 1rem;
    border-radius: 8px;
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: var(--transition);
}

.nav-links a:hover {
    color: var(--text-primary);
}

.nav-links a:hover::after {
    width: 80%;
}

.nav-links a.active {
    color: var(--accent);
    background: rgba(200, 155, 60, 0.1);
}

/* 简介横幅 */
.intro-banner {
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 2rem;
    margin: 2rem auto;
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: hidden;
}

.intro-banner::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 300px;
    height: 100%;
    background: linear-gradient(90deg, transparent, var(--accent-dim) 100%);
    opacity: 0.05;
    pointer-events: none;
}

.intro-banner h2 {
    font-family: 'Noto Serif SC', serif;
    color: var(--accent);
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.intro-banner p {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 0.8rem;
}

.intro-banner .highlight {
    color: var(--accent);
    font-weight: 600;
}

/* 主内容区域 */
main {
    padding: 2rem 0 4rem;
}

.page {
    display: none;
    animation: fadeIn 0.4s ease-in-out;
}

.page.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 页面标题 */
.page-title {
    font-family: 'Noto Serif SC', serif;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 2rem;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* 标签筛选器 */
.filter-tabs {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.filter-tab {
    padding: 0.75rem 1.5rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
    font-weight: 500;
    position: relative;
    overflow: hidden;
}

.filter-tab::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(200, 155, 60, 0.1), transparent);
    transition: left 0.5s;
}

.filter-tab:hover::before {
    left: 100%;
}

.filter-tab:hover {
    border-color: var(--border-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.filter-tab.active {
    background: var(--accent);
    color: var(--bg-primary);
    border-color: var(--accent);
    box-shadow: 0 0 20px var(--accent-dim);
}

.filter-tab.fire.active { background: var(--fire); border-color: var(--fire); box-shadow: 0 0 20px var(--fire-glow); }
.filter-tab.wind.active { background: var(--wind); border-color: var(--wind); box-shadow: 0 0 20px var(--wind-glow); }
.filter-tab.earth.active { background: var(--earth); border-color: var(--earth); box-shadow: 0 0 20px var(--earth-glow); }
.filter-tab.water.active { background: var(--water); border-color: var(--water); box-shadow: 0 0 20px var(--water-glow); }

/* 子类型筛选器（武器专用） */
.subfilter-tabs {
    display: none;
    gap: 0.75rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    padding-left: 1rem;
}

.subfilter-tabs.active {
    display: flex;
}

.subfilter-tab {
    padding: 0.5rem 1rem;
    background: var(--bg-tertiary);
    border: 1px solid rgba(200, 155, 60, 0.15);
    border-radius: 8px;
    color: var(--text-muted);
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.9rem;
}

.subfilter-tab:hover {
    color: var(--text-secondary);
    border-color: var(--border);
}

.subfilter-tab.active {
    background: rgba(200, 155, 60, 0.15);
    color: var(--accent);
    border-color: var(--accent);
}

/* 卡片网格 */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

/* 数据卡片 */
.data-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    overflow: hidden;
    transition: var(--transition);
    cursor: pointer;
    position: relative;
}

.data-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--accent), var(--accent-dim));
    opacity: 0;
    transition: var(--transition);
}

.data-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--border-hover);
}

.data-card:hover::before {
    opacity: 1;
}

.data-card.fire::before { background: linear-gradient(90deg, var(--fire), #ff6b6b); }
.data-card.wind::before { background: linear-gradient(90deg, var(--wind), #6bc5ff); }
.data-card.earth::before { background: linear-gradient(90deg, var(--earth), #ffbb5c); }
.data-card.water::before { background: linear-gradient(90deg, var(--water), #6ba3ff); }

.card-image {
    width: 100%;
    height: 250px;
    object-fit: cover;
    display: block;
    background: linear-gradient(135deg, var(--bg-secondary), var(--bg-tertiary));
}

.card-content {
    padding: 1.5rem;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: start;
    margin-bottom: 1rem;
}

.card-title {
    font-family: 'Noto Serif SC', serif;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.card-type {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: rgba(200, 155, 60, 0.15);
    color: var(--accent);
    border-radius: 6px;
    font-size: 0.85rem;
    font-weight: 500;
    border: 1px solid var(--border);
}

.attribute-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.35rem 0.9rem;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 600;
    border: 1px solid;
}

.attribute-badge.fire { background: rgba(255, 68, 68, 0.15); color: var(--fire); border-color: var(--fire); }
.attribute-badge.wind { background: rgba(68, 212, 255, 0.15); color: var(--wind); border-color: var(--wind); }
.attribute-badge.earth { background: rgba(255, 170, 68, 0.15); color: var(--earth); border-color: var(--earth); }
.attribute-badge.water { background: rgba(68, 136, 255, 0.15); color: var(--water); border-color: var(--water); }

.stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
    margin: 1rem 0;
}

.stat-item {
    background: var(--bg-tertiary);
    padding: 0.75rem;
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.stat-label {
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-bottom: 0.25rem;
}

.stat-value {
    color: var(--accent);
    font-size: 1.1rem;
    font-weight: 700;
}

.expand-btn {
    width: 100%;
    padding: 0.75rem;
    background: rgba(200, 155, 60, 0.1);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--accent);
    cursor: pointer;
    transition: var(--transition);
    font-weight: 600;
    margin-top: 1rem;
}

.expand-btn:hover {
    background: rgba(200, 155, 60, 0.2);
    border-color: var(--accent);
}

.card-details {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease-in-out;
}

.card-details.expanded {
    max-height: 2000px;
}

.skill-section {
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border);
}

.skill-item {
    background: var(--bg-tertiary);
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 1rem;
    border-left: 3px solid var(--accent);
}

.skill-name {
    font-weight: 700;
    color: var(--accent);
    margin-bottom: 0.5rem;
    font-size: 1.05rem;
}

.skill-desc {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.7;
    white-space: pre-line;
}

/* 添加模板表单 */
.add-template {
    background: var(--bg-card);
    border: 2px dashed var(--border);
    border-radius: 16px;
    padding: 3rem;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    min-height: 400px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.add-template:hover {
    border-color: var(--accent);
    background: rgba(200, 155, 60, 0.05);
}

.add-icon {
    font-size: 4rem;
    color: var(--accent);
    margin-bottom: 1rem;
    opacity: 0.7;
}

.add-text {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

/* 页脚 */
footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
    padding: 2rem;
    text-align: center;
    margin-top: 4rem;
}

footer p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .container {
        padding: 0 1rem;
    }
    
    nav {
        flex-direction: column;
        gap: 1rem;
        padding: 1rem;
    }
    
    .nav-links {
        gap: 1rem;
    }
    
    .logo {
        font-size: 1.5rem;
    }
    
    .page-title {
        font-size: 2rem;
    }
    
    .card-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
}

/* 空状态 */
.empty-state {
    text-align: center;
    padding: 4rem 2rem;
    color: var(--text-muted);
}

.empty-state-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
    opacity: 0.3;
}

.empty-state-text {
    font-size: 1.2rem;
}