/* 藏头诗生成器样式 */

/* 全局变量 - 浅色模式 */
:root {
    --primary-color: #667eea;
    --secondary-color: #764ba2;
    --accent-color: #f093fb;
    --dark-color: #2c3e50;
    --light-color: #ecf0f1;
    --gray-color: #95a5a6;
    --white-color: #ffffff;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1);
    --border-radius: 12px;
    --transition: all 0.3s ease;
    --background-gradient: linear-gradient(135deg, #f5f7fa 0%, #e4e8ec 100%);
    --card-background: #ffffff;
    --input-background: #f9f9f9;
    --text-color: #2c3e50;
    --text-secondary: #95a5a6;
    --border-color: #e0e0e0;
    --hover-background: rgba(102, 126, 234, 0.05);
}

/* 深色模式变量 */
body.dark-mode {
    --primary-color: #818cf8;
    --secondary-color: #a78bfa;
    --accent-color: #f093fb;
    --dark-color: #ecf0f1;
    --light-color: #2c3e50;
    --gray-color: #7f8c8d;
    --white-color: #34495e;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.3);
    --background-gradient: linear-gradient(135deg, #1a1a1a 0%, #2c3e50 100%);
    --card-background: #34495e;
    --input-background: #2c3e50;
    --text-color: #ecf0f1;
    --text-secondary: #7f8c8d;
    --border-color: #4a5568;
    --hover-background: rgba(129, 140, 248, 0.1);
}

/* 基础样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    transition: var(--transition);
}

.acrostic-poem-section {
    padding: 60px 0;
    background: var(--background-gradient);
    min-height: 100vh;
    transition: var(--transition);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 页面头部 */
.poem-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 40px;
    flex-wrap: wrap;
    gap: 20px;
}

.header-content {
    flex: 1;
    min-width: 300px;
    text-align: center;
}

.poem-title {
    font-size: 2.8rem;
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 15px;
    transition: var(--transition);
    justify-content: center;
}

.poem-title i {
    color: var(--primary-color);
    font-size: 3rem;
    transition: var(--transition);
}

.poem-subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 25px;
    max-width: 800px;
    transition: var(--transition);
    margin-left: auto;
    margin-right: auto;
}

.poem-badge {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
    justify-content: center;
}

.badge-item {
    background: var(--card-background);
    color: var(--primary-color);
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.badge-item:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

/* 主体内容 */
.poem-main {
    display: flex;
    flex-direction: column;
    gap: 30px;
    margin-bottom: 60px;
}

/* 输入区域 */
.poem-inputs {
    background: var(--card-background);
    border-radius: var(--border-radius);
    padding: 30px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid var(--border-color);
    margin: 0 auto;
    width: 100%;
    max-width: 600px;
}

.poem-inputs:hover {
    box-shadow: var(--shadow-lg);
}

.input-section {
    margin-bottom: 0;
}

.section-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition);
}

.section-title i {
    color: var(--primary-color);
    transition: var(--transition);
    font-size: 1rem;
}

.input-group {
    margin-bottom: 20px;
}

.input-group:last-child {
    margin-bottom: 0;
}

.input-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-color);
    margin-bottom: 6px;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: var(--transition);
}

.input-group label i {
    color: var(--primary-color);
    font-size: 0.9rem;
    transition: var(--transition);
}

.form-control {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 1rem;
    transition: var(--transition);
    background: var(--input-background);
    color: var(--text-color);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
    background: var(--input-background);
}

.form-control::placeholder {
    color: var(--text-secondary);
}

.input-hint {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-top: 8px;
    text-align: center;
}

/* 操作按钮 */
.action-buttons {
    display: flex;
    gap: 15px;
    margin-top: 25px;
    justify-content: center;
}

.btn {
    padding: 12px 32px;
    border: none;
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
    justify-content: center;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    box-shadow: var(--shadow);
}

.btn-primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-primary:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

.btn-secondary {
    background: var(--card-background);
    color: var(--text-color);
    border: 2px solid var(--border-color);
}

.btn-secondary:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    transform: translateY(-2px);
}

.btn-copy.copied {
    background: #2ecc71;
    color: white;
    border-color: #2ecc71;
}

/* 结果展示 */
.poem-results {
    background: var(--card-background);
    border-radius: var(--border-radius);
    padding: 30px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid var(--border-color);
    margin: 0 auto;
    width: 100%;
    max-width: 600px;
}

.poem-results:hover {
    box-shadow: var(--shadow-lg);
}

.result-header {
    margin-bottom: 25px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--border-color);
}

.result-content {
    margin-bottom: 25px;
}

.poem-card {
    background: linear-gradient(135deg, #fff9f0 0%, #fff5eb 100%);
    border-radius: var(--border-radius);
    padding: 25px;
    text-align: center;
    border: 1px solid rgba(139, 69, 19, 0.1);
}

.poem-card .poem-header {
    margin-bottom: 20px;
}

.poem-card .poem-icon {
    font-size: 3rem;
    margin-bottom: 10px;
}

.poem-card h3 {
    font-size: 1.2rem;
    font-weight: 600;
    color: #8b4513;
}

.poem-body {
    margin-bottom: 20px;
}

.poem-content {
    margin-bottom: 15px;
}

.loading {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    color: var(--text-secondary);
    font-size: 1rem;
}

.loading i {
    color: var(--primary-color);
}

.poem-line {
    font-size: 1.5rem;
    font-family: 'STKaiti', 'KaiTi', 'SimKai', serif;
    color: var(--text-color);
    margin: 12px 0;
    opacity: 0;
    animation: fadeInUp 0.6s ease forwards;
    line-height: 1.8;
    transition: var(--transition);
}

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

.error-message {
    color: #e74c3c;
    font-size: 1rem;
}

.poem-highlight {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(102, 126, 234, 0.1);
    padding: 8px 16px;
    border-radius: 20px;
    margin-top: 15px;
}

.highlight-label {
    color: var(--primary-color);
    font-weight: 600;
    font-size: 0.85rem;
}

.highlight-text {
    color: var(--primary-color);
    font-size: 1rem;
    font-weight: 600;
    font-family: 'STKaiti', 'KaiTi', serif;
}

.poem-actions {
    display: flex;
    gap: 12px;
}

.poem-actions .btn {
    flex: 1;
    padding: 10px 20px;
}

/* 生成历史 */
.history-section {
    margin-top: 25px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

.details-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition);
}

.details-title i {
    color: var(--primary-color);
    font-size: 0.9rem;
    transition: var(--transition);
}

.history-list {
    min-height: 60px;
}

.no-history {
    color: var(--text-secondary);
    text-align: center;
    font-size: 0.9rem;
}

.history-item {
    background: var(--input-background);
    border-radius: var(--border-radius);
    padding: 12px 15px;
    margin-bottom: 10px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition);
}

.history-item:hover {
    background: var(--hover-background);
}

.history-words {
    font-weight: 600;
    color: var(--primary-color);
}

.history-time {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

/* 说明部分 */
.poem-info {
    margin-bottom: 60px;
}

.info-section {
    background: var(--card-background);
    border-radius: var(--border-radius);
    padding: 30px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid var(--border-color);
    margin-bottom: 20px;
}

.info-section:hover {
    box-shadow: var(--shadow-lg);
}

.info-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition);
}

.info-title i {
    color: var(--primary-color);
    transition: var(--transition);
}

.info-text {
    color: var(--text-color);
    line-height: 1.8;
    font-size: 0.95rem;
    transition: var(--transition);
}

.info-list {
    list-style: none;
    padding-left: 0;
}

.info-list li {
    color: var(--text-color);
    margin-bottom: 10px;
    padding-left: 20px;
    position: relative;
    font-size: 0.95rem;
    line-height: 1.6;
    transition: var(--transition);
}

.info-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

/* 功能网格 */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
}

.feature-item {
    background: var(--input-background);
    border-radius: var(--border-radius);
    padding: 20px;
    text-align: center;
    transition: var(--transition);
}

.feature-item:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow);
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 12px;
}

.feature-item h4 {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 8px;
    transition: var(--transition);
}

.feature-item p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.5;
    transition: var(--transition);
}

/* 使用示例 */
.examples-section {
    margin-bottom: 60px;
}

.examples-content {
    background: var(--card-background);
    border-radius: var(--border-radius);
    padding: 30px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.examples-content:hover {
    box-shadow: var(--shadow-lg);
}

.examples-title {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 25px;
    display: flex;
    align-items: center;
    gap: 10px;
    transition: var(--transition);
}

.examples-title i {
    color: var(--primary-color);
    transition: var(--transition);
}

.examples-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.example-item {
    background: var(--input-background);
    border-radius: var(--border-radius);
    padding: 20px;
    transition: var(--transition);
}

.example-item:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow);
}

.example-name {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 12px;
    transition: var(--transition);
}

.example-input {
    font-size: 0.9rem;
    color: var(--primary-color);
    font-weight: 500;
    margin-bottom: 12px;
}

.example-poem {
    margin-bottom: 12px;
}

.example-poem p {
    font-family: 'STKaiti', 'KaiTi', serif;
    color: var(--text-color);
    margin: 6px 0;
    font-size: 0.95rem;
    line-height: 1.6;
    text-align: center;
    transition: var(--transition);
}

.example-highlight {
    text-align: center;
    font-size: 0.8rem;
    color: var(--text-secondary);
    padding-top: 10px;
    border-top: 1px dashed var(--border-color);
}

/* FAQ */
.faq-section {
    margin-bottom: 60px;
}

.faq-content {
    background: var(--card-background);
    border-radius: var(--border-radius);
    padding: 30px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.faq-content:hover {
    box-shadow: var(--shadow-lg);
}

.faq-title {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 25px;
    display: flex;
    align-items: center;
    gap: 10px;
    transition: var(--transition);
}

.faq-title i {
    color: var(--primary-color);
    transition: var(--transition);
}

.faq-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.faq-item {
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 15px;
}

.faq-item:last-child {
    border-bottom: none;
}

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    font-weight: 500;
    color: var(--text-color);
    font-size: 0.95rem;
    transition: var(--transition);
    padding: 10px 0;
}

.faq-question:hover {
    color: var(--primary-color);
}

.faq-question i {
    font-size: 0.8rem;
    transition: var(--transition);
    color: var(--text-secondary);
}

.faq-question.active i {
    transform: rotate(180deg);
    color: var(--primary-color);
}

.faq-answer {
    display: none;
    padding-top: 10px;
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.6;
    transition: var(--transition);
}

.faq-answer.show {
    display: block;
}

/* 相关工具 */
.related-section {
    margin-bottom: 40px;
}

.related-content {
    background: var(--card-background);
    border-radius: var(--border-radius);
    padding: 30px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.related-content:hover {
    box-shadow: var(--shadow-lg);
}

.related-title {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 25px;
    display: flex;
    align-items: center;
    gap: 10px;
    transition: var(--transition);
}

.related-title i {
    color: var(--primary-color);
    transition: var(--transition);
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 15px;
}

.related-card {
    background: var(--input-background);
    border-radius: var(--border-radius);
    padding: 20px;
    text-align: center;
    transition: var(--transition);
    text-decoration: none;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.related-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow);
}

.related-icon {
    font-size: 2.5rem;
    margin-bottom: 10px;
}

.related-name {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-color);
    transition: var(--transition);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .poem-title {
        font-size: 2rem;
    }

    .poem-title i {
        font-size: 2.2rem;
    }

    .poem-subtitle {
        font-size: 1rem;
    }

    .input-section {
        padding: 20px;
    }

    .action-buttons {
        flex-direction: column;
    }

    .action-buttons .btn {
        width: 100%;
    }

    .poem-actions {
        flex-direction: column;
    }

    .poem-actions .btn {
        width: 100%;
    }

    .examples-list {
        grid-template-columns: 1fr;
    }

    .example-poem p {
        font-size: 0.9rem;
    }
}

@media (max-width: 480px) {
    .acrostic-poem-section {
        padding: 40px 0;
    }

    .badge-item {
        font-size: 0.8rem;
        padding: 6px 12px;
    }

    .poem-inputs, .poem-results {
        padding: 20px;
    }

    .poem-line {
        font-size: 1.2rem;
    }
}