/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #6366f1;
    --primary-hover: #4f46e5;
    --secondary-color: #8b5cf6;
    --background-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --card-bg: #ffffff;
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --border-color: #e5e7eb;
    --success-color: #10b981;
    --error-color: #ef4444;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial,
                 "Noto Sans SC", "Microsoft YaHei", sans-serif;
    background: var(--background-gradient);
    min-height: 100vh;
    color: var(--text-primary);
}

.container {
    display: flex;
    flex-direction: column;
    height: 100vh;
    overflow: hidden;
    width: 75%;
    margin: 0 auto;
    justify-content: flex-start;
    align-items: stretch;
    padding: 0;
    gap: 0;
}

/* 头部样式 */
.header {
    background: rgba(255, 255, 255, 0.95);
    padding: 0.75rem 1.5rem;
    box-shadow: var(--shadow);
    z-index: 10;
    width: 100%;
    margin-bottom: 0.5px;
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
}

.logo-container {
    flex: 0 0 auto;
    display: flex;
    align-items: center;
}

.site-logo {
    width: 40px;
    height: 40px;
    transition: transform 0.3s ease;
}

.site-logo:hover {
    transform: scale(1.1);
}

.title-container {
    flex: 1;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.header h1 {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: 0.2rem;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

/* 主内容区 - 两列布局 */
.main-content {
    display: grid;
    grid-template-columns: 2fr 1fr;  /* 左侧占2份，右侧占1份（宽度对换） */
    flex: 1;  /* 高度自动扩展，占用所有可用空间 */
    gap: 1.25rem;
    padding: 0.5rem 0;  /* 上下padding减半，左右为0 */
    overflow: hidden;
    min-height: 0;
    width: 100%;
    margin-bottom: 1px;
}

/* 左侧面板 */
.left-panel {
    background: var(--card-bg);
    box-shadow: var(--shadow-lg);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.input-section {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: 1.25rem;
}

.input-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.input-header label {
    font-weight: 600;
    font-size: 1rem;
    color: var(--text-primary);
}

.btn-clear {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    border: none;
    padding: 0.75rem 1.25rem;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 600;
    transition: all 0.3s;
    box-shadow: var(--shadow);
}

.btn-clear:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

#markdown-input {
    flex: 1;
    width: 100%;
    padding: 1rem;
    border: 2px solid var(--border-color);
    font-family: "Consolas", "Monaco", "Courier New", monospace;
    font-size: 0.95rem;
    line-height: 1.6;
    resize: none;
    transition: border-color 0.2s;
}

#markdown-input:focus {
    outline: none;
    border-color: var(--primary-color);
}

/* 右侧面板 */
.right-panel {
    background: var(--card-bg);
    box-shadow: var(--shadow-lg);
    overflow-y: auto;
}

.config-section {
    padding: 1.25rem;
}

.info-box {
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
    border-left: 4px solid var(--primary-color);
    padding: 0.85rem;
    margin-bottom: 1.25rem;
}

.info-box strong {
    color: var(--primary-color);
    display: block;
    margin-bottom: 0.5rem;
}

.info-box p {
    color: var(--text-secondary);
    font-size: 0.85rem;
    margin-bottom: 0.5rem;
}

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

.info-box li {
    padding: 0.25rem 0;
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.info-box li:before {
    content: "✓ ";
    color: var(--success-color);
    font-weight: bold;
    margin-right: 0.5rem;
}

/* 表单样式 */
.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-primary);
    font-size: 0.9rem;
}

/* 行内表单样式（label和输入框在同一行） */
.form-row {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.form-row .inline-label {
    display: inline-block;
    margin-bottom: 0;
    font-weight: 500;
    color: var(--text-primary);
    font-size: 0.9rem;
    white-space: nowrap;
    min-width: fit-content;
}

.form-row select {
    flex: 1;
    padding: 0.75rem;
    border: 2px solid var(--border-color);
    font-size: 0.95rem;
    transition: all 0.2s;
}

.form-row select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid var(--border-color);
    font-size: 0.95rem;
    transition: all 0.2s;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.btn-generate {
    width: 100%;
    padding: 1rem;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    border: none;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    box-shadow: var(--shadow);
}

.btn-generate:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

.btn-generate:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

/* 状态提示区 */
.status-area {
    margin-top: 1.5rem;
    padding: 1rem;
    background: #f0f9ff;
    text-align: center;
}

.loading-spinner {
    width: 40px;
    height: 40px;
    margin: 0 auto 0.5rem;
    border: 4px solid #e0f2fe;
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.status-area p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* 错误提示区 */
.error-area {
    margin-top: 1.5rem;
    padding: 1rem;
    background: #fef2f2;
    border-left: 4px solid var(--error-color);
}

.error-area strong {
    color: var(--error-color);
    display: block;
    margin-bottom: 0.5rem;
}

.error-area p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* 下载提示区 */
.download-area {
    margin-top: 1.5rem;
    padding: 1rem;
    background: #f0fdf4;
    border-left: 4px solid var(--success-color);
}

.download-area strong {
    color: var(--success-color);
    display: block;
    margin-bottom: 0.5rem;
}

.download-area p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.download-area .tip {
    margin-top: 0.5rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-style: italic;
}

/* 底部 */
.footer {
    background: rgba(255, 255, 255, 0.95);
    padding: 1.6rem 1.5rem;
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.8rem;
    box-shadow: 0 -2px 4px rgba(0, 0, 0, 0.05);
    width: 100%;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .main-content {
        grid-template-columns: 1fr;
        grid-template-rows: 1fr auto;
    }

    .right-panel {
        max-height: 400px;
    }
}

@media (max-width: 640px) {
    .header {
        padding: 1rem;
    }

    .header-content {
        flex-direction: column;
        gap: 0.5rem;
    }

    .logo-container {
        order: -1;
    }

    .title-container {
        width: 100%;
    }

    .header h1 {
        font-size: 1.3rem;
    }

    .main-content {
        padding: 1rem;
        gap: 1rem;
    }

    .input-section {
        padding: 1rem;
    }

    .config-section {
        padding: 1rem;
    }
}