:root {
    /* --- 核心变量 (亮色模式) --- */
    --primary: #4a90e2;
    --primary-hover: #357abd;
    
    --bg-body: #f5f7fa;
    --bg-card: #ffffff;
    --bg-btn: #ffffff;
    --bg-btn-hover: #f9fbff;
    
    --text-main: #333333;
    --text-sub: #666666;
    --border-color: #eeeeee;
    
    --shadow: 0 4px 12px rgba(0,0,0,0.08);
    --radius: 12px;
}

/* --- 暗色模式 (Dark Mode) --- */
[data-theme="dark"] {
    --primary: #4a90e2;       /* 保持主色调，或者稍微调亮一点 */
    --primary-hover: #5da3f0;
    
    --bg-body: #121212;       /* 深黑背景 */
    --bg-card: #1e1e1e;       /* 卡片深灰 */
    --bg-btn: #2d2d2d;        /* 按钮背景 */
    --bg-btn-hover: #383838;
    
    --text-main: #e0e0e0;     /* 文字变白 */
    --text-sub: #a0a0a0;
    --border-color: #333333;  /* 边框变深 */
    
    --shadow: 0 4px 12px rgba(0,0,0,0.3); /* 阴影加重 */
}

body {
    font-family: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    background-color: var(--bg-body);
    color: var(--text-main);
    margin: 0;
    padding: 20px;
    display: flex;
    justify-content: center;
    min-height: 100vh;
    transition: background-color 0.3s ease, color 0.3s ease; /* 平滑过渡 */
}

.container {
    width: 100%;
    max-width: 800px;
    background: var(--bg-card);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 30px;
    position: relative;
    transition: background-color 0.3s ease, box-shadow 0.3s ease;
}

/* 导航栏 */
.nav-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    height: 40px;
}

.nav-actions {
    display: flex;
    gap: 10px; /* 按钮之间的间距 */
}

/* 按钮通用样式 */
.back-btn, .action-btn {
    background: var(--bg-btn); /* 适配夜间 */
    border: 1px solid var(--border-color);
    color: var(--text-sub);
    font-size: 0.9rem;
    cursor: pointer;
    padding: 6px 12px;
    border-radius: 20px; /* 圆角 */
    display: flex;
    align-items: center;
    transition: all 0.2s;
    font-weight: bold;
}

.back-btn:hover, .action-btn:hover {
    background-color: var(--bg-btn-hover);
    border-color: var(--primary);
    color: var(--primary);
}

.back-btn.hidden {
    visibility: hidden;
    opacity: 0;
}

h1, h2, h3 {
    text-align: center;
    margin-bottom: 20px;
}

h1 { font-size: 1.5rem; color: var(--primary); margin: 0; }
h2 { font-size: 1.25rem; color: var(--text-main); margin-top: 20px; }
h3 { color: var(--text-main); }

.subtitle {
    text-align: center;
    color: var(--text-sub);
    margin-bottom: 20px;
}

.progress-bar {
    height: 6px;
    background: var(--border-color);
    border-radius: 3px;
    margin-bottom: 30px;
    overflow: hidden;
}
.progress-fill {
    height: 100%;
    background: var(--primary);
    width: 10%;
    transition: width 0.4s ease;
}

.btn-group {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

button.choice-btn {
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    padding: 15px 20px;
    border-radius: var(--radius);
    font-size: 1rem;
    cursor: pointer;
    text-align: left;
    transition: all 0.2s;
    color: var(--text-main);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

button.choice-btn:hover {
    border-color: var(--primary);
    background: var(--bg-btn-hover);
    transform: translateY(-2px);
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
}

.view-section { display: none; }
.view-section.active { 
    display: block; 
    animation: fadeIn 0.4s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.result-header {
    text-align: center;
    padding: 20px;
    background: var(--bg-btn-hover); /* 微妙的背景色 */
    border-radius: var(--radius);
    margin-bottom: 30px;
    border: 1px solid var(--border-color);
}

.final-emotion {
    font-size: 2rem;
    font-weight: bold;
    display: block;
    margin: 10px 0;
}

.result-sub-text {
    font-size: 0.9rem; 
    color: var(--text-sub);
}

.content-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 20px;
    margin-top: 20px;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 15px;
    font-size: 0.9rem;
    color: var(--text-main);
}

th, td {
    border: 1px solid var(--border-color);
    padding: 10px;
    text-align: left;
}

th { background-color: var(--bg-btn-hover); }

.highlight-row {
    background-color: rgba(74, 144, 226, 0.15) !important; /* 使用主色调的透明版 */
    border-left: 4px solid var(--primary);
    font-weight: bold;
}

.restart-btn {
    background: var(--primary);
    color: white;
    border: none;
    width: 100%;
    padding: 15px;
    border-radius: var(--radius);
    margin-top: 30px;
    font-weight: bold;
    cursor: pointer;
    font-size: 1rem;
}
.restart-btn:hover {
    background: var(--primary-hover);
}

/* 图片查看按钮 */
.image-link-btn {
    background: transparent;
    border: 1px dashed var(--border-color);
    color: var(--text-sub);
    padding: 12px;
    border-radius: var(--radius);
    width: 100%;
    cursor: pointer;
    font-size: 0.95rem;
    transition: all 0.2s;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
}

.image-link-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: var(--bg-btn-hover);
}

/* 图片容器 */
.full-image-container {
    width: 100%;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 10px;
    border-radius: 8px;
    box-sizing: border-box;
    overflow: hidden;
}

.full-image-container img {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 4px;
}

/* 模态框 (保持不变) */
.image-modal {
    display: none;
    position: fixed;
    z-index: 9999;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0,0,0,0.95);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    cursor: zoom-out;
    animation: fadeIn 0.3s;
}
.image-modal.active { display: flex; }
.image-modal img {
    margin: auto;
    display: block;
    max-width: 95%;
    max-height: 90vh;
    border-radius: 4px;
    box-shadow: 0 0 20px rgba(255,255,255,0.1);
    object-fit: contain;
}
.close-zoom {
    position: absolute;
    top: 20px;
    right: 35px;
    color: #f1f1f1;
    font-size: 40px;
    font-weight: bold;
    cursor: pointer;
}
.zoom-hint {
    color: #bbb;
    margin-top: 15px;
    font-size: 0.9rem;
}