/* css/character.css - Premium Theme Redesign */

/* ========== 主题变量 ========== */
:root {
    /* 深色模式 (默认) */
    --bg-page: #050505;
    --bg-color: #09090b; /* Zinc 950 */
    --text-primary: #e4e4e7;
    --text-secondary: #a1a1aa;
    --text-tertiary: #71717a;
    
    --header-bg: rgba(24, 24, 27, 0.6);
    --panel-bg: rgba(24, 24, 27, 0.5);
    --border-color: rgba(255, 255, 255, 0.08);
    --border-light: rgba(255, 255, 255, 0.03);
    
    --btn-bg: rgba(39, 39, 42, 0.4);
    --btn-hover-bg: rgba(63, 63, 70, 0.6);
    --btn-active-bg: rgba(255, 255, 255, 0.08);
    --btn-active-text: #fff;
    --btn-active-border: rgba(255, 255, 255, 0.2);
    --btn-active-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    
    --card-bg: linear-gradient(160deg, #18181b 0%, #09090b 100%);
    --card-img-bg-top: transparent;
    --card-img-bg-bottom: transparent;
    --card-fade-gradient: linear-gradient(to top, #09090b 0%, rgba(9, 9, 11, 0.9) 25%, transparent 100%);
    --card-fade-height: 50%;
    --card-info-bg: transparent;
    --card-shadow: rgba(0, 0, 0, 0.6);
    --card-border: rgba(255, 255, 255, 0.1);
    --card-inner-glow: rgba(255, 255, 255, 0.06);
    --card-glare: rgba(255, 255, 255, 0.1);
    
    --empty-bg: rgba(24, 24, 27, 0.3);
    --empty-border: rgba(255, 255, 255, 0.1);
    
    --orb-1: rgba(79, 70, 229, 0.08);
    --orb-2: rgba(168, 85, 247, 0.08);

    --theme-btn-bg: rgba(63, 63, 70, 0.5);
    --theme-btn-hover: rgba(82, 82, 91, 0.8);
    --theme-icon-color: #fcd34d;

    --card-name-color: #fff;
    --card-name-shadow: 0 2px 10px rgba(0, 0, 0, 0.8), 0 0 20px rgba(var(--el-rgb), 0.4);
    --card-star-shadow: 0 2px 5px rgba(0, 0, 0, 0.8);
    
    --default-el-rgb: 139, 92, 246; /* purple-500 instead of default white */
    
    --tag-weapon-bg: rgba(255, 255, 255, 0.05);
    --tag-weapon-color: #a1a1aa;
    --tag-weapon-border: rgba(255, 255, 255, 0.08);
    --tag-weapon-dot: #71717a;
    --placeholder-color: rgba(255, 255, 255, 0.1);
}

[data-theme="light"] {
    /* 浅色模式 — 清爽、立体、有层次感 */
    --bg-page: #eef1f6;
    --bg-color: #eef1f6;
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-tertiary: #94a3b8;

    /* 面板用纯白，让它从背景中浮起来 */
    --header-bg: rgba(255, 255, 255, 0.92);
    --panel-bg: rgba(255, 255, 255, 0.92);
    /* 关键：边框必须可见 */
    --border-color: #d1d9e6;
    --border-light: #e8ecf2;

    /* 按钮：非激活态用浅灰，激活态用纯白 + 阴影，产生层次感 */
    --btn-bg: #f0f3f8;
    --btn-hover-bg: #e8ecf3;
    --btn-active-bg: #ffffff;
    --btn-active-text: #1e3a5f;
    --btn-active-border: #c2cfe0;
    --btn-active-shadow: 0 2px 8px -1px rgba(0, 0, 0, 0.12), 0 0 0 1px rgba(255,255,255,0.8);

    --card-bg: #ffffff;
    --card-img-bg-top: transparent;
    --card-img-bg-bottom: transparent;
    --card-fade-gradient: linear-gradient(to top, #ffffff 0%, rgba(255, 255, 255, 0.95) 30%, transparent 70%);
    --card-fade-height: 45%;
    --card-info-bg: transparent;
    --card-shadow: rgba(0, 0, 0, 0.06);
    --card-border: #dde3ee;
    --card-inner-glow: transparent;
    --card-glare: transparent;

    --empty-bg: rgba(255, 255, 255, 0.8);
    --empty-border: #d1d9e6;

    --orb-1: rgba(139, 92, 246, 0.14);
    --orb-2: rgba(14, 165, 233, 0.12);

    --theme-btn-bg: #ffffff;
    --theme-btn-hover: #f0f3f8;
    --theme-icon-color: #f59e0b;

    --card-name-color: #0f172a;
    --card-name-shadow: none;
    --card-star-shadow: none;

    --default-el-rgb: 139, 92, 246;

    --tag-weapon-bg: #f0f3f8;
    --tag-weapon-color: #475569;
    --tag-weapon-border: #d1d9e6;
    --tag-weapon-dot: #94a3b8;

    --placeholder-color: #dde3ee;
}

[data-theme="light"] .page-header,
[data-theme="light"] .filter-panel {
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border-color: #d1d9e6;
    box-shadow: 0 4px 20px -4px rgba(0, 0, 0, 0.08), 0 1px 3px rgba(0, 0, 0, 0.04), inset 0 1px 0 rgba(255,255,255,0.9);
}


/* 环境光球在浅色模式下依然保留，但使用更轻柔的变量 */
[data-theme="light"] body::before,
[data-theme="light"] body::after {
    opacity: 1;
}



/* ========== 基础 ========== */
html, body {
    margin: 0;
    padding: 0;
    background-color: var(--bg-page);
    transition: background-color 0.4s ease;
}

body {
    background: var(--bg-color);
    min-height: 100vh;
    min-height: 100dvh;
    padding: 24px;
    padding-left: max(24px, env(safe-area-inset-left, 24px));
    padding-right: max(24px, env(safe-area-inset-right, 24px));
    color: var(--text-primary);
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    position: relative;
    transition: color 0.4s ease, background 0.4s ease;
}

/* Background Glowing Orbs - 加入极其高级的缓慢流体呼吸动画 */
body::before {
    content: '';
    position: fixed;
    top: -20%;
    left: -10%;
    width: 70vw;
    height: 70vw;
    border-radius: 50%;
    background: radial-gradient(circle, var(--orb-1) 0%, rgba(255,255,255,0) 60%);
    z-index: 0;
    pointer-events: none;
    transition: background 0.8s ease;
    transform: translateZ(0);
    animation: driftOrb1 30s ease-in-out infinite alternate;
}

body::after {
    content: '';
    position: fixed;
    bottom: -20%;
    right: -10%;
    width: 60vw;
    height: 60vw;
    border-radius: 50%;
    background: radial-gradient(circle, var(--orb-2) 0%, rgba(255,255,255,0) 60%);
    z-index: 0;
    pointer-events: none;
    transition: background 0.8s ease;
    transform: translateZ(0);
    animation: driftOrb2 25s ease-in-out infinite alternate;
}

@keyframes driftOrb1 {
    0%   { transform: translate3d(0, 0, 0) scale(1); }
    100% { transform: translate3d(8%, 12%, 0) scale(1.15); }
}

@keyframes driftOrb2 {
    0%   { transform: translate3d(0, 0, 0) scale(1); }
    100% { transform: translate3d(-8%, -12%, 0) scale(1.2); }
}

/* ========== 主容器 ========== */
.character-layout {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    position: relative;
    z-index: 10;
    display: flex;
    flex-direction: column;
    gap: 32px;
    padding-bottom: 40px;
}

/* ========== 顶部 Header ========== */
.page-header {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 20px 32px;
    background: var(--header-bg);
    /* 极致性能优化：大幅降低高斯模糊半径，彻底解放低端显卡渲染压力 */
    backdrop-filter: blur(4px); 
    -webkit-backdrop-filter: blur(4px);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    box-shadow: 0 15px 40px -12px var(--card-shadow);
    transition: background-color 0.4s ease, border-color 0.4s ease;
}

.back-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: 14px;
    text-decoration: none;
    color: var(--text-secondary);
    background: var(--btn-bg);
    border: 1px solid var(--border-color);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), background-color 0.3s ease, color 0.3s ease, box-shadow 0.3s ease;
    flex-shrink: 0;
}

.back-link:hover {
    color: var(--text-primary);
    background: var(--btn-hover-bg);
    border-color: var(--btn-active-border);
    transform: translateX(-2px);
    box-shadow: 0 0 15px var(--border-color);
}

.back-link:active {
    transform: scale(0.95);
}

.brand {
    flex: 1;
    min-width: 0;
}

.brand-header-logo-container {
    width: 36px;
    height: 36px;
    border-radius: 9px;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(92, 107, 192, 0.18);
    transition: transform 0.3s ease;
    flex-shrink: 0;
}

.brand-header-logo-container:hover {
    transform: scale(1.1) rotate(5deg);
}

.brand-header-logo {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.brand .logo {
    font-size: 1.8rem;
    font-weight: 800;
    background: linear-gradient(to right, #818cf8, #c084fc);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -1px;
    line-height: 1.1;
}

.brand .logo span {
    background: none;
    -webkit-text-fill-color: var(--text-tertiary);
    font-weight: 600;
}

.brand .subtitle {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-top: 4px;
    font-weight: 500;
    letter-spacing: 1px;
    text-transform: uppercase;
}

/* Header Actions & Theme Toggle */
.header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.result-count {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-primary);
    background: var(--btn-bg);
    padding: 8px 16px;
    border-radius: 20px;
    border: 1px solid var(--border-color);
    white-space: nowrap;
    letter-spacing: 0.5px;
    box-shadow: inset 0 1px 0 var(--border-light);
    transition: all 0.4s ease;
}



/* ========== 筛选面板 ========== */
.filter-panel {
    background: var(--panel-bg);
    backdrop-filter: blur(4px); /* 极致性能优化 */
    -webkit-backdrop-filter: blur(4px);
    border-radius: 24px;
    border: 1px solid var(--border-color);
    padding: 24px;
    box-shadow: 0 10px 30px var(--card-shadow);
    transition: background-color 0.4s ease, border-color 0.4s ease;
}

.filter-row {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 12px 0;
}

.filter-row + .filter-row {
    border-top: 1px solid var(--border-light);
}

.filter-label {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--text-tertiary);
    letter-spacing: 1.5px;
    padding-top: 8px;
    flex-shrink: 0;
    width: 44px;
    text-align: right;
    text-transform: uppercase;
    transition: color 0.4s ease;
}

.filter-group {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    flex: 1;
}

/* ========== 筛选按钮 ========== */
.f-btn {
    padding: 8px 16px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    background: var(--btn-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    cursor: pointer;
    transition: transform 0.2s cubic-bezier(0.4, 0, 0.2, 1), background-color 0.2s ease, color 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
    white-space: nowrap;
}

.f-btn:hover {
    background: var(--btn-hover-bg);
    color: var(--text-primary);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--card-shadow);
}

.f-btn:active {
    transform: translateY(0);
}

.f-btn.active {
    background: var(--btn-active-bg);
    color: var(--btn-active-text);
    font-weight: 700;
    border-color: var(--btn-active-border);
    box-shadow: var(--btn-active-shadow);
}

/* 元素筛选 active 发光色 */
#elementFilters .f-btn.active[data-val="pyro"]    { border-color: rgba(239, 68, 68, 0.4); color: #fca5a5; box-shadow: 0 0 15px rgba(239, 68, 68, 0.2); background: rgba(239, 68, 68, 0.1); }
#elementFilters .f-btn.active[data-val="hydro"]   { border-color: rgba(59, 130, 246, 0.4); color: #93c5fd; box-shadow: 0 0 15px rgba(59, 130, 246, 0.2); background: rgba(59, 130, 246, 0.1); }
#elementFilters .f-btn.active[data-val="anemo"]   { border-color: rgba(16, 185, 129, 0.4); color: #6ee7b7; box-shadow: 0 0 15px rgba(16, 185, 129, 0.2); background: rgba(16, 185, 129, 0.1); }
#elementFilters .f-btn.active[data-val="electro"] { border-color: rgba(168, 85, 247, 0.4); color: #d8b4fe; box-shadow: 0 0 15px rgba(168, 85, 247, 0.2); background: rgba(168, 85, 247, 0.1); }
#elementFilters .f-btn.active[data-val="cryo"]    { border-color: rgba(6, 182, 212, 0.4); color: #67e8f9; box-shadow: 0 0 15px rgba(6, 182, 212, 0.2); background: rgba(6, 182, 212, 0.1); }
#elementFilters .f-btn.active[data-val="geo"]     { border-color: rgba(234, 179, 8, 0.4); color: #fde047; box-shadow: 0 0 15px rgba(234, 179, 8, 0.2); background: rgba(234, 179, 8, 0.1); }
#elementFilters .f-btn.active[data-val="dendro"]  { border-color: rgba(34, 197, 94, 0.4); color: #86efac; box-shadow: 0 0 15px rgba(34, 197, 94, 0.2); background: rgba(34, 197, 94, 0.1); }

/* 浅色模式元素滤镜：带回充满能量感的光晕发光，不再平庸死板！ */
[data-theme="light"] #elementFilters .f-btn.active[data-val="pyro"]    { color: #dc2626; background: rgba(239, 68, 68, 0.1); border-color: rgba(239, 68, 68, 0.4); box-shadow: 0 8px 24px -6px rgba(239, 68, 68, 0.4); }
[data-theme="light"] #elementFilters .f-btn.active[data-val="hydro"]   { color: #2563eb; background: rgba(59, 130, 246, 0.1); border-color: rgba(59, 130, 246, 0.4); box-shadow: 0 8px 24px -6px rgba(59, 130, 246, 0.4); }
[data-theme="light"] #elementFilters .f-btn.active[data-val="anemo"]   { color: #059669; background: rgba(16, 185, 129, 0.1); border-color: rgba(16, 185, 129, 0.4); box-shadow: 0 8px 24px -6px rgba(16, 185, 129, 0.4); }
[data-theme="light"] #elementFilters .f-btn.active[data-val="electro"] { color: #9333ea; background: rgba(168, 85, 247, 0.1); border-color: rgba(168, 85, 247, 0.4); box-shadow: 0 8px 24px -6px rgba(168, 85, 247, 0.4); }
[data-theme="light"] #elementFilters .f-btn.active[data-val="cryo"]    { color: #0891b2; background: rgba(6, 182, 212, 0.1); border-color: rgba(6, 182, 212, 0.4); box-shadow: 0 8px 24px -6px rgba(6, 182, 212, 0.4); }
[data-theme="light"] #elementFilters .f-btn.active[data-val="geo"]     { color: #ca8a04; background: rgba(234, 179, 8, 0.1); border-color: rgba(234, 179, 8, 0.4); box-shadow: 0 8px 24px -6px rgba(234, 179, 8, 0.4); }
[data-theme="light"] #elementFilters .f-btn.active[data-val="dendro"]  { color: #16a34a; background: rgba(34, 197, 94, 0.1); border-color: rgba(34, 197, 94, 0.4); box-shadow: 0 8px 24px -6px rgba(34, 197, 94, 0.4); }

/* ========== 角色网格 ========== */
.char-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 24px;
    min-height: 400px;
}

/* ========== 顶级全屏立绘卡片 (Premium Full-Bleed Design) ========== */
.char-card {
    --el-rgb: var(--default-el-rgb);
    position: relative;
    border-radius: 20px;
    background: linear-gradient(150deg, rgba(var(--el-rgb), 0.15) 0%, #09090b 50%);
    box-shadow: 0 10px 30px -10px var(--card-shadow), inset 0 0 0 1px var(--card-inner-glow);
    aspect-ratio: 10 / 14; /* 完美的塔罗牌/原神名片比例 */
    overflow: hidden;
    display: block; /* 不再使用 flex，全权由绝对定位接管 */
    text-decoration: none;
    color: inherit;
    transform: translateZ(0);
    will-change: transform;
    transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275), box-shadow 0.4s ease;
}

/* 浅色模式卡片：纯白基底 + 可见的边框线 */
[data-theme="light"] .char-card {
    background: linear-gradient(160deg, rgba(var(--el-rgb), 0.06) 0%, #ffffff 50%);
    box-shadow: 0 4px 16px -4px rgba(0, 0, 0, 0.08), 0 0 0 1px #dde3ee;
}

.char-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 20px 40px -10px rgba(var(--el-rgb), 0.25), 0 0 20px rgba(var(--el-rgb), 0.1), inset 0 0 0 1px rgba(var(--el-rgb), 0.5);
}

/* 浅色 Hover：元素色晕 + 清晰边框线 */
[data-theme="light"] .char-card:hover {
    background: linear-gradient(160deg, rgba(var(--el-rgb), 0.1) 0%, #ffffff 60%);
    box-shadow:
        0 20px 48px -12px rgba(var(--el-rgb), 0.3),
        0 0 0 1.5px rgba(var(--el-rgb), 0.5);
    transform: translateY(-8px) scale(1.02);
}

.char-card:active {
    transform: translateY(-2px) scale(0.99);
}

/* ========== 图片区 (撑满整卡，沉浸式立绘) ========== */
.img-box {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
}

.char-img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: contain;
    object-position: center 15%; /* 将半身像/大头贴往上提，防止“脑袋掉地上” */
    transform: scale(1.1); /* 稍微放大一点，填满空间 */
    transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
    z-index: 1;
}

.char-card:hover .char-img {
    transform: scale(1.18) translateY(-2%);
}

/* 底部极具质感的深色羽化遮罩，保证文字清晰可读 */
.img-box::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, #09090bff 0%, #09090be6 20%, #09090b00 60%);
    z-index: 2;
    pointer-events: none;
}

[data-theme="light"] .img-box::after {
    /* 必须是纯白到底，与卡片背景无缝融合，拒绝断层 */
    background: linear-gradient(to top, #ffffff 0%, rgba(255, 255, 255, 0.9) 25%, transparent 65%);
}

.img-box::before {
    display: none !important;
}

/* 版本号徽章，高级感全开 */
.ver-tag {
    position: absolute;
    top: 16px;
    right: 16px;
    font-size: 0.65rem;
    font-weight: 700;
    color: #fff;
    background: rgba(0, 0, 0, 0.4);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 4px 10px;
    border-radius: 12px;
    z-index: 10;
    font-family: 'SF Mono', ui-monospace, monospace;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

[data-theme="light"] .ver-tag {
    background: #f8fafc;
    color: #475569;
    border: 1px solid #cbd5e1;
    box-shadow: 0 2px 4px rgba(0,0,0,0.04);
}

/* ========== 悬浮文字区 (大字重，左对齐，压阵感) ========== */
.img-overlay {
    position: absolute;
    bottom: 56px; /* 为底部的胶囊标签留出空间 */
    left: 20px;
    right: 20px;
    z-index: 3;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.img-overlay .char-name-overlay {
    font-size: 1.6rem;
    font-weight: 900;
    line-height: 1.1;
    letter-spacing: -0.02em;
    color: var(--text-primary);
    text-shadow: 0 2px 10px #09090b; /* 确保强对比度 */
    text-align: left;
}

[data-theme="light"] .img-overlay .char-name-overlay {
    color: #0f172a;
    text-shadow: 0 1px 8px rgba(255,255,255,0.8), 0 2px 16px rgba(255,255,255,0.6);
}

.img-overlay .star-tag-overlay {
    margin-top: 4px;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 3px;
    text-shadow: 0 2px 8px #09090b;
    opacity: 0.85;
    text-align: left;
    font-family: 'SF Mono', ui-monospace, monospace; /* 让 RANK 05 看起来更高级 */
}

[data-theme="light"] .img-overlay .star-tag-overlay {
    text-shadow: 0 1px 6px rgba(255,255,255,0.7);
    color: #64748b;
    font-weight: 700;
}

.star-tag-5 { color: #facc15; }
.star-tag-4 { color: #c084fc; }

/* ========== 标签区 (底部亚克力悬浮胶囊) ========== */
.char-info {
    position: absolute;
    bottom: 16px;
    left: 20px;
    right: 20px;
    z-index: 4;
    display: flex;
    gap: 8px;
    align-items: center;
}

.tag-pill {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.75rem;
    font-weight: 700;
    padding: 6px 12px;
    border-radius: 20px;
    background: rgba(var(--el-rgb), 0.15);
    color: rgb(var(--el-rgb));
    border: 1px solid rgba(var(--el-rgb), 0.3);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

[data-theme="light"] .tag-pill.element-tag {
    background: rgba(255, 255, 255, 0.95);
    color: rgb(var(--el-rgb));
    border: 1px solid rgba(var(--el-rgb), 0.3);
    box-shadow: 0 4px 12px rgba(var(--el-rgb), 0.15);
}

.tag-pill .dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    flex-shrink: 0;
    background: rgb(var(--el-rgb));
    box-shadow: 0 0 6px rgb(var(--el-rgb));
}

.tag-pill.weapon-tag {
    background: var(--btn-bg);
    color: var(--text-secondary);
    border-color: var(--border-color);
}

[data-theme="light"] .tag-pill.weapon-tag {
    background: rgba(255, 255, 255, 0.95);
    color: #475569;
    border: 1px solid rgba(0, 0, 0, 0.06);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.04);
}

.tag-pill.weapon-tag .dot {
    background: var(--text-tertiary);
    box-shadow: none;
}

/* ========== 空状态 ========== */
.empty-state {
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 100px 24px;
    text-align: center;
    color: var(--text-tertiary);
    grid-column: 1 / -1;
    background: var(--empty-bg);
    border-radius: 24px;
    border: 1px dashed var(--empty-border);
    transition: all 0.4s ease;
}

.empty-state.visible {
    display: flex;
    animation: fadeIn 0.5s ease;
}

.empty-icon {
    font-size: 4rem;
    margin-bottom: 20px;
    opacity: 0.3;
    filter: drop-shadow(0 0 20px var(--empty-border));
}

.empty-title {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.empty-desc {
    font-size: 0.9rem;
    color: var(--text-secondary);
    max-width: 300px;
    line-height: 1.6;
}

/* ========== 底部 ========== */
.footer-area {
    margin-top: 20px;
    padding: 24px;
    border-radius: 20px;
    background: var(--header-bg);
    /* 移除不必要的 backdrop-filter，为低端机型节省 GPU 算力 */
    border: 1px solid var(--border-color);
    text-align: center;
    display: flex;
    flex-direction: column;
    gap: 10px;
    align-items: center;
    transition: background-color 0.4s ease, border-color 0.4s ease;
}

.footer-area .disclaimer {
    font-size: 0.75rem;
    color: var(--text-tertiary);
    line-height: 1.6;
    max-width: 600px;
}

.footer-area .copyright {
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-weight: 700;
    letter-spacing: 1px;
}

/* ========== 入场动画 ========== */
@keyframes cardEnter {
    from {
        opacity: 0;
        transform: translateY(40px) scale(0.9);
        filter: blur(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
        filter: blur(0);
    }
}

.char-card.entering {
    animation: cardEnter 0.6s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
    opacity: 0;
}

.char-card.leaving {
    transition: opacity 0.3s ease, transform 0.3s ease, filter 0.3s ease;
    opacity: 0;
    transform: scale(0.9) translateY(20px);
    filter: blur(5px);
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* ========== 响应式 ========== */
@media (max-width: 768px) {
    .char-grid {
        grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
        gap: 16px;
    }
    .page-header {
        padding: 16px 20px;
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
    }
    .back-link {
        position: absolute;
        top: 16px;
        right: 20px;
    }
    .brand {
        margin-right: 50px;
    }
    .header-actions {
        width: 100%;
        justify-content: space-between;
    }
    .filter-panel {
        padding: 16px;
    }
    .filter-row {
        flex-direction: column;
        gap: 8px;
    }
    .filter-label {
        text-align: left;
        width: auto;
        padding-top: 0;
    }
}

@media (max-width: 480px) {
    .char-grid {
        grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
        gap: 12px;
    }
    .img-overlay .char-name-overlay {
        font-size: 1.1rem;
    }
}

@media (prefers-reduced-motion: reduce) {
    .char-card.entering,
    .empty-state.visible {
        animation: none;
        opacity: 1;
        transform: none;
        filter: none;
    }
    *, *::before, *::after {
        transition: none !important;
        animation: none !important;
    }
}