/* CSS变量定义 - 色彩系统 */
:root {
    /* 色彩系统 */
    --color-xuan-paper: #F8F6F2;
    --color-moon-shadow: #FFFFFF;
    --color-ink-black: #1C1C1C;
    --color-soot-gray: #6B6B6B;
    --color-light-ink: #BDBDBD;
    --color-cinnabar: #A82C2C;
    --color-jade: #2E7D32;
    --color-crimson: #C62828;
    
    /* 字体系统 */
    --font-family: 'Noto Serif SC', serif;
    
    /* 间距系统 (8px倍数) */
    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 24px;
    --spacing-lg: 32px;
    --spacing-xl: 48px;
    --spacing-xxl: 64px;
    --spacing-xxxl: 96px;
    
    /* 其他 */
    --border-radius: 4px;
    --transition: all 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --container-max-width: 1100px;
}

/* 重置样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-family);
    background-color: var(--color-xuan-paper);
    color: var(--color-ink-black);
    line-height: 1.7;
    overflow-x: hidden;
}

.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* 英雄区域 */
.hero-section {
    min-height: 450px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: var(--spacing-xxxl) 0;
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 30% 20%, rgba(168, 44, 44, 0.05) 0%, transparent 50%),
                radial-gradient(circle at 70% 80%, rgba(168, 44, 44, 0.03) 0%, transparent 50%);
    pointer-events: none;
}

.hero-title {
    font-size: 64px;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-lg);
    color: var(--color-ink-black);
    animation: heroFadeIn 600ms ease-out;
}

.hero-subtitle {
    font-size: 18px;
    font-style: italic;
    color: var(--color-soot-gray);
    margin-bottom: var(--spacing-xxl);
    animation: heroFadeIn 600ms ease-out 200ms both;
}

.hero-btn {
    background-color: var(--color-cinnabar);
    color: var(--color-moon-shadow);
    border: none;
    padding: var(--spacing-sm) var(--spacing-xl);
    font-size: 16px;
    font-weight: 600;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    animation: heroFadeIn 600ms ease-out 400ms both;
    font-family: var(--font-family);
}

.hero-btn:hover {
    background-color: #8B1F1F;
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(168, 44, 44, 0.25);
}

/* 章节标题 */
.section-title {
    font-size: 32px;
    font-weight: 600;
    text-align: center;
    margin-bottom: var(--spacing-xxxl);
    color: var(--color-ink-black);
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -var(--spacing-md);
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 2px;
    background-color: var(--color-cinnabar);
}

/* 剑势区域 */
.sword-forms-section {
    padding: var(--spacing-xxxl) 0;
}

.sword-form-card {
    display: flex;
    align-items: center;
    margin-bottom: var(--spacing-xxxl);
    gap: var(--spacing-xxl);
    opacity: 0;
    transform: translateX(-50px);
    animation: slideInLeft 600ms ease-out forwards;
}

.sword-form-card:nth-child(even) {
    flex-direction: row-reverse;
    transform: translateX(50px);
    animation: slideInRight 600ms ease-out forwards;
}

.sword-form-image {
    flex: 1;
    min-height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.sword-illustration {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    position: relative;
    animation: float 6s ease-in-out infinite;
}

.sword-sword {
    background: linear-gradient(135deg, rgba(168, 44, 44, 0.1) 0%, rgba(168, 44, 44, 0.05) 100%);
    border: 2px solid var(--color-cinnabar);
}

.sword-sword::after {
    content: '⚔️';
    font-size: 80px;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.sword-knife {
    background: linear-gradient(135deg, rgba(168, 44, 44, 0.08) 0%, rgba(168, 44, 44, 0.03) 100%);
    border: 2px solid var(--color-cinnabar);
}

.sword-knife::after {
    content: '🔪';
    font-size: 80px;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.sword-spear {
    background: linear-gradient(135deg, rgba(168, 44, 44, 0.1) 0%, rgba(168, 44, 44, 0.05) 100%);
    border: 2px solid var(--color-cinnabar);
}

.sword-spear::after {
    content: '🔱';
    font-size: 80px;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.sword-whip {
    background: linear-gradient(135deg, rgba(168, 44, 44, 0.08) 0%, rgba(168, 44, 44, 0.03) 100%);
    border: 2px solid var(--color-cinnabar);
}

.sword-whip::after {
    content: '🪃';
    font-size: 80px;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.sword-rope {
    background: linear-gradient(135deg, rgba(168, 44, 44, 0.1) 0%, rgba(168, 44, 44, 0.05) 100%);
    border: 2px solid var(--color-cinnabar);
}

.sword-rope::after {
    content: '🪢';
    font-size: 80px;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.sword-palm {
    background: linear-gradient(135deg, rgba(168, 44, 44, 0.08) 0%, rgba(168, 44, 44, 0.03) 100%);
    border: 2px solid var(--color-cinnabar);
}

.sword-palm::after {
    content: '✋';
    font-size: 80px;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.sword-arrow {
    background: linear-gradient(135deg, rgba(168, 44, 44, 0.1) 0%, rgba(168, 44, 44, 0.05) 100%);
    border: 2px solid var(--color-cinnabar);
}

.sword-arrow::after {
    content: '🏹';
    font-size: 80px;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.sword-qi {
    background: linear-gradient(135deg, rgba(168, 44, 44, 0.08) 0%, rgba(168, 44, 44, 0.03) 100%);
    border: 2px solid var(--color-cinnabar);
}

.sword-qi::after {
    content: '💨';
    font-size: 80px;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.sword-jade {
    background: linear-gradient(135deg, rgba(168, 44, 44, 0.1) 0%, rgba(168, 44, 44, 0.05) 100%);
    border: 2px solid var(--color-cinnabar);
}

.sword-jade::after {
    content: '💎';
    font-size: 80px;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.sword-form-content {
    flex: 1;
    padding: var(--spacing-lg) var(--spacing-xl);
    background-color: var(--color-moon-shadow);
    border-radius: var(--border-radius);
    box-shadow: 0 8px 24px rgba(90, 90, 90, 0.08);
}

.sword-form-title {
    font-size: 48px;
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: var(--spacing-md);
    color: var(--color-ink-black);
}

.sword-form-desc {
    font-size: 18px;
    line-height: 1.7;
    margin-bottom: var(--spacing-md);
    color: var(--color-ink-black);
}

.sword-form-quote {
    font-style: italic;
    font-weight: 500;
    color: var(--color-cinnabar);
    border-left: 3px solid var(--color-cinnabar);
    padding-left: var(--spacing-sm);
}

/* 问答区域 */
.quiz-section {
    padding: var(--spacing-xxxl) 0;
    background-color: var(--color-moon-shadow);
}

.quiz-progress {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.progress-bar {
    flex: 1;
    height: 4px;
    background-color: var(--color-light-ink);
    border-radius: 2px;
    margin-right: var(--spacing-md);
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background-color: var(--color-cinnabar);
    border-radius: 2px;
    width: 10%;
    transition: width 300ms ease-out;
}

.progress-text {
    font-size: 14px;
    color: var(--color-soot-gray);
    white-space: nowrap;
}

.quiz-container {
    max-width: 800px;
    margin: 0 auto;
}

.quiz-card {
    background-color: var(--color-moon-shadow);
    border: 1px solid #EAEAEA;
    border-radius: var(--border-radius);
    padding: var(--spacing-xl);
    box-shadow: 0 8px 24px rgba(90, 90, 90, 0.08);
}

.quiz-question {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: var(--spacing-xl);
    color: var(--color-ink-black);
    line-height: 1.4;
}

.quiz-options {
    margin-bottom: var(--spacing-xl);
}

.quiz-option {
    background-color: var(--color-moon-shadow);
    border: 1px solid #EAEAEA;
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    height: 64px;
    display: flex;
    align-items: center;
    font-size: 16px;
    line-height: 1.5;
    user-select: none;
}

.quiz-option:hover {
    border-color: var(--color-ink-black);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(90, 90, 90, 0.15);
}

.quiz-option.selected {
    border-color: var(--color-cinnabar);
    background-color: #FFF8F8;
}

.quiz-option.correct {
    border-color: var(--color-jade);
    background-color: #F1F8E9;
}

.quiz-option.incorrect {
    border-color: var(--color-crimson);
    background-color: #FFEBEE;
}

.quiz-option.correct::after {
    content: ' ✓';
    color: var(--color-jade);
    font-weight: bold;
    margin-left: auto;
}

.quiz-option.incorrect::after {
    content: ' ✗';
    color: var(--color-crimson);
    font-weight: bold;
    margin-left: auto;
}

.quiz-controls {
    display: flex;
    justify-content: space-between;
    gap: var(--spacing-md);
}

.quiz-btn {
    background-color: var(--color-moon-shadow);
    border: 1px solid var(--color-soot-gray);
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: 16px;
    cursor: pointer;
    transition: var(--transition);
    border-radius: var(--border-radius);
    font-family: var(--font-family);
    font-weight: 500;
}

.quiz-btn:hover:not(:disabled) {
    border-color: var(--color-ink-black);
    background-color: var(--color-ink-black);
    color: var(--color-moon-shadow);
}

.quiz-btn:disabled {
    cursor: not-allowed;
    color: var(--color-light-ink);
    border-color: var(--color-light-ink);
}

.submit-btn {
    background-color: var(--color-cinnabar) !important;
    border-color: var(--color-cinnabar) !important;
    color: var(--color-moon-shadow) !important;
}

.submit-btn:hover:not(:disabled) {
    background-color: #8B1F1F !important;
    border-color: #8B1F1F !important;
}

/* 结果模态框 */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(28, 28, 28, 0.7);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.modal-overlay.show {
    opacity: 1;
    visibility: visible;
}

.result-modal {
    background-color: var(--color-moon-shadow);
    padding: var(--spacing-xxl);
    border-radius: 8px;
    max-width: 600px;
    margin: var(--spacing-md);
    text-align: center;
    position: relative;
    transform: scale(0.8);
    transition: var(--transition);
}

.modal-overlay.show .result-modal {
    transform: scale(1);
}

.result-icon {
    font-size: 64px;
    margin-bottom: var(--spacing-lg);
}

.result-title {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--color-ink-black);
}

.result-subtitle {
    font-size: 18px;
    color: var(--color-soot-gray);
    margin-bottom: var(--spacing-xl);
    line-height: 1.6;
}

.result-score {
    font-size: 72px;
    font-weight: 700;
    color: var(--color-cinnabar);
    margin-bottom: var(--spacing-xl);
}

.result-analysis {
    text-align: left;
    margin-bottom: var(--spacing-xl);
    max-height: 300px;
    overflow-y: auto;
}

.analysis-item {
    margin-bottom: var(--spacing-md);
    padding: var(--spacing-sm);
    border-left: 3px solid var(--color-cinnabar);
    background-color: rgba(168, 44, 44, 0.02);
}

.analysis-question {
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.analysis-answer {
    color: var(--color-soot-gray);
}

.result-btn {
    background-color: var(--color-cinnabar);
    color: var(--color-moon-shadow);
    border: none;
    padding: var(--spacing-sm) var(--spacing-xl);
    font-size: 16px;
    font-weight: 600;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    font-family: var(--font-family);
}

.result-btn:hover {
    background-color: #8B1F1F;
    transform: translateY(-2px);
}

/* 动画 */
@keyframes heroFadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInLeft {
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-10px);
    }
}

/* 响应式设计 */
@media (max-width: 768px) {
    .hero-title {
        font-size: 40px;
    }
    
    .section-title {
        font-size: 24px;
    }
    
    .sword-form-title {
        font-size: 32px;
    }
    
    .sword-form-card {
        flex-direction: column !important;
        text-align: center;
        gap: var(--spacing-lg);
        margin-bottom: var(--spacing-xl);
    }
    
    .sword-form-card:nth-child(even) {
        flex-direction: column !important;
    }
    
    .sword-form-content {
        padding: var(--spacing-lg);
    }
    
    .sword-illustration {
        width: 120px;
        height: 120px;
    }
    
    .sword-illustration::after {
        font-size: 48px;
    }
    
    .quiz-question {
        font-size: 20px;
    }
    
    .quiz-controls {
        flex-direction: column;
    }
    
    .quiz-btn {
        width: 100%;
    }
    
    .result-score {
        font-size: 48px;
    }
    
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .quiz-progress {
        flex-direction: column;
        gap: var(--spacing-sm);
        align-items: stretch;
    }
    
    .progress-bar {
        margin-right: 0;
        margin-bottom: var(--spacing-xs);
    }
    
    .progress-text {
        text-align: center;
    }
    
    .result-modal {
        margin: var(--spacing-sm);
        padding: var(--spacing-lg);
    }
}

/* 打印样式 */
@media print {
    .hero-section,
    .quiz-section,
    .result-modal {
        break-inside: avoid;
    }
    
    .sword-form-card {
        break-inside: avoid;
        margin-bottom: var(--spacing-lg);
    }
}