/* 基础样式 */
:root {
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --secondary-color: #64748b;
    --success-color: #22c55e;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --bg-primary: #f8fafc;
    --bg-secondary: #ffffff;
    --border-color: #e2e8f0;
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
}

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



/* 图标样式 */
.bi {
    display: inline-block;
    vertical-align: -0.125em;
    margin-right: 0.25rem;
}

/* 区块标题 */
.section-title {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
}

.section-title > :first-child {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.section-title .bi {
    color: var(--primary-color);
    font-size: 1rem;
    margin-right: 0.25rem;
}

/* 容器布局 */
.app-container {
    min-height: 100vh;
    padding: 1rem;
    display: flex;
    justify-content: center;
    align-items: flex-start;
}

.generator-wrapper {
    width: 100%;
    max-width: 1000px;
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    overflow: hidden;
}

/* 头部样式 */
.app-header {
    padding: 1.25rem;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-hover));
    color: white;
    text-align: center;
}

.app-header h1 {
    font-size: 1.25rem;
    font-weight: 600;
    margin: 0;
    letter-spacing: 0.5px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.app-header .bi {
    font-size: 1.25rem;
}

.header-desc {
    margin-top: 0.5rem;
    font-size: 0.875rem;
    opacity: 0.9;
}

/* 主体内容 */
.main-content {
    padding: 1.25rem;
}

/* 文献类型选择 */
.format-section {
    background: white;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    padding: 1rem;
    margin-bottom: 1rem;
}

.format-buttons {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.format-btn {
    flex: 1;
    min-width: 120px;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: white;
    color: var(--text-secondary);
    font-size: 0.875rem;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

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

.format-btn.active {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

/* 表单区域 */
.form-section {
    background: white;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    padding: 1rem;
    margin-bottom: 1rem;
}

.form-grid {
    display: grid;
    gap: 1rem;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-size: 0.875rem;
    color: var(--text-primary);
}

.form-actions {
    display: flex;
    gap: 0.5rem;
}

.form-actions button {
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: white;
    color: var(--text-secondary);
    font-size: 0.875rem;
    cursor: pointer;
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
}

.form-actions button:hover {
    background: var(--bg-primary);
    border-color: var(--primary-color);
    color: var(--primary-color);
}

/* 作者输入区域 */
.author-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.author-item {
    display: flex;
    gap: 0.5rem;
    align-items: flex-start;
}

.author-name {
    flex: 1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.5rem;
}

.icon-button {
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: white;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.icon-button:hover {
    background: var(--bg-primary);
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.icon-button .bi {
    margin: 0;
}

/* 页码范围输入 */
.page-range {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 0.5rem;
    align-items: center;
}

.page-range span {
    color: var(--text-secondary);
    font-weight: 600;
}

/* 输入框样式 */
.text-input {
    width: 100%;
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    transition: border-color 0.2s ease;
}

.text-input:focus {
    outline: none;
    border-color: var(--primary-color);
}

/* 结果区域 */
.result-section {
    background: white;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    padding: 1rem;
    margin-bottom: 1rem;
}

.result-actions {
    display: flex;
    gap: 0.5rem;
}

.result-actions button {
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: white;
    color: var(--text-secondary);
    font-size: 0.875rem;
    cursor: pointer;
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    white-space: nowrap;
}

.result-actions button.primary {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

.result-actions button:hover {
    background: var(--bg-primary);
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.result-actions button.primary:hover {
    background: var(--primary-hover);
    border-color: var(--primary-hover);
    color: white;
}

.result-container {
    background: var(--bg-primary);
    border-radius: var(--radius-md);
    padding: 1rem;
    min-height: 100px;
    margin-top: 1rem;
}

.reference-result {
    font-family: monospace;
    font-size: 0.875rem;
    line-height: 1.6;
    color: var(--text-primary);
    white-space: pre-wrap;
}

/* 说明区域 */
.info-section {
    background: white;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    padding: 1rem;
}

.info-content {
    background: var(--bg-primary);
    border-radius: var(--radius-md);
    padding: 1rem;
}

.info-content ul {
    list-style-position: inside;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.info-content li {
    margin-bottom: 0.5rem;
}

.info-content li:last-child {
    margin-bottom: 0;
}

/* 按钮图标 */
button .bi {
    margin-right: 0.25rem;
    color: currentColor;
}

/* 主要按钮的图标颜色 */
button.primary .bi {
    color: white;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .app-container {
        padding: 0;
    }

    .generator-wrapper {
        border-radius: 0;
        border: none;
    }

    .format-buttons {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .author-name {
        grid-template-columns: 1fr;
    }

    .result-actions {
        flex-wrap: wrap;
    }

    .result-actions button {
        flex: 1;
        justify-content: center;
        min-width: 120px;
    }
}

@media (max-width: 480px) {
    .format-buttons {
        flex-direction: column;
    }

    .format-btn {
        width: 100%;
    }

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

    .result-actions button {
        width: 100%;
    }
}