/* ==================== 设计系统变量 ==================== */
:root {
    /* 颜色系统（默认蓝主题） */
    --color-primary: #1890ff;
    --color-primary-hover: #40a9ff;
    --color-focus-ring: rgba(24, 144, 255, 0.1);
    --color-text: #333;
    --color-text-secondary: #666;
    --color-text-tertiary: #999;
    --color-text-placeholder: #bfbfbf;
    --color-border: #d9d9d9;
    --color-border-light: #e5e5e5;
    --color-bg: #fff;
    --color-bg-hover: #f5f5f5;
    --color-bg-active: #e6f7ff;
    --color-error: #ff4d4f;
    --color-success: #52c41a;
    /* 结果区复制按钮与数量：主题蓝 + 浅灰底 */
    --color-result-copy: #1890ff;
    --color-result-copy-hover: #096dd9;
    --color-result-copy-bg: #f0f2f5;
    --color-result-copy-bg-hover: #e6f7ff;
    --color-tooltip: #333;
    
    /* 间距系统 */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 12px;
    --spacing-lg: 16px;
    --spacing-xl: 20px;
    --spacing-xxl: 24px;
    --spacing-xxxl: 30px;
    --spacing-huge: 40px;
    
    /* 字体大小 */
    --font-size-xs: 12px;
    --font-size-sm: 13px;
    --font-size-base: 14px;
    --font-size-md: 16px;
    --font-size-lg: 18px;
    --font-size-xl: 20px;
    --font-size-xxl: 32px;
    
    /* 圆角 */
    --radius-sm: 4px;
    --radius-md: 6px;
    --radius-lg: 8px;
    
    /* 阴影 */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.2);
    
    /* 过渡 */
    --transition-base: all 0.2s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* 顶部导航栏 */
.top-nav {
    background-color: var(--color-bg);
    border-bottom: 1px solid var(--color-border-light);
    padding: 0 var(--spacing-xl);
    position: sticky;
    top: 0;
    z-index: 200;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    height: 60px;
    gap: var(--spacing-xxxl);
}

.logo {
    display: flex;
    align-items: center;
    cursor: pointer;
    transition: var(--transition-base);
}

.logo:hover {
    opacity: 0.88;
}

.logo-image {
    display: block;
    width: 32px;
    height: 32px;
    object-fit: contain;
    border-radius: var(--radius-sm);
}

.nav-links {
    display: flex;
    gap: var(--spacing-xxl);
}

.nav-link {
    text-decoration: none;
    color: var(--color-text-secondary);
    font-size: var(--font-size-md);
    padding: var(--spacing-sm) 0;
    position: relative;
    transition: var(--transition-base);
}

.nav-link:hover {
    color: var(--color-text);
}

.nav-link.active {
    color: var(--color-primary);
    font-weight: 500;
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background-color: var(--color-primary);
}

.nav-link-tooltip {
    cursor: default;
}

.nav-link-tooltip::after {
    content: attr(data-tooltip);
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(var(--spacing-sm));
    background-color: var(--color-tooltip);
    color: var(--color-bg);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-base);
    z-index: 10000;
    margin-top: var(--spacing-xs);
    box-shadow: var(--shadow-md);
    pointer-events: none;
    max-width: 400px;
    min-width: 250px;
    white-space: normal;
    line-height: 1.5;
    text-align: center;
}

.nav-link-tooltip::before {
    content: '';
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    border: 6px solid transparent;
    border-bottom-color: var(--color-tooltip);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-base);
    z-index: 10001;
}

.nav-link-tooltip:hover::after {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

.nav-link-tooltip:hover::before {
    opacity: 1;
    visibility: visible;
}

/* 主内容区域 */
.main-content {
    flex: 1;
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
    padding: var(--spacing-huge) var(--spacing-xl) var(--spacing-huge);
    position: relative;
    overflow: visible;
}

.page {
    display: none;
}

.page.active {
    display: block;
    overflow: visible;
}

#result-page.active {
    display: flex;
    flex-direction: column;
    min-height: calc(100vh - 60px);
    overflow: visible;
}

/* 结果页：顶栏与「拆分结果」之间尽量贴紧（主区默认 padding-top 较大） */
.main-content:has(#result-page.active),
.main-content.main-content--result-active {
    padding-top: 0;
}

.main-content:has(#result-page.active) .result-content,
.main-content.main-content--result-active .result-content {
    padding-top: 0;
}

/* 结果页底部：当前规则摘要 + 操作按钮 */
.result-footer-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
    width: 100%;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
    padding: var(--spacing-md) var(--spacing-xl);
    margin-bottom: calc(var(--spacing-xxl) + 60px);
    background-color: var(--color-bg);
    font-size: var(--font-size-sm);
    font-weight: 400;
    color: var(--color-text);
    flex-shrink: 0;
}

.result-footer-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    gap: var(--spacing-xl);
    flex: 1;
    min-width: min(100%, 280px);
}

.result-footer-item {
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    gap: 4px;
    min-width: 0;
}

.result-footer-label {
    color: var(--color-text-secondary);
    flex-shrink: 0;
}

.result-footer-value {
    color: var(--color-text);
    word-break: break-word;
}

.result-footer-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    flex-shrink: 0;
}

.result-footer-actions .btn {
    font-weight: 400;
}

@media (max-width: 768px) {
    .result-footer-bar {
        flex-direction: column;
        align-items: stretch;
    }

    .result-footer-actions {
        justify-content: flex-end;
    }
}

/* 标题区域 */
.title-section {
    text-align: center;
    margin-bottom: calc(var(--spacing-huge) + var(--spacing-md));
    position: relative;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
    width: 100%;
    padding: 0 var(--spacing-xl);
}

.main-title {
    font-size: var(--font-size-xxl);
    font-weight: 600;
    color: var(--color-text);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-md);
}

.info-icon {
    cursor: pointer;
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-tertiary);
    transition: var(--transition-base);
    width: 20px;
    height: 20px;
}

.info-icon:hover {
    color: var(--color-primary);
    transform: scale(1.1);
}

.info-icon svg {
    width: 18px;
    height: 18px;
}

.tooltip {
    position: absolute;
    top: calc(100% + var(--spacing-md));
    left: 50%;
    transform: translateX(-50%) translateY(var(--spacing-md));
    background-color: var(--color-tooltip);
    color: var(--color-bg);
    padding: var(--spacing-md) var(--spacing-xxl);
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-base);
    z-index: 10000;
    max-width: 500px;
    min-width: 300px;
    white-space: normal;
    line-height: 1.5;
    box-shadow: var(--shadow-md);
}

.tooltip::before {
    content: '';
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    border: 6px solid transparent;
    border-bottom-color: var(--color-tooltip);
    z-index: 10001;
}

.tooltip.show {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

/* 输入区域 */
.input-section {
    display: flex;
    gap: var(--spacing-xxxl);
    margin-bottom: var(--spacing-xxxl);
    flex-wrap: wrap;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
    width: 100%;
    padding: 0 var(--spacing-xl);
}

.input-group {
    flex: 1;
    min-width: 300px;
    display: flex;
    flex-direction: column;
    container-type: inline-size;
    container-name: split-input;
}

.input-label {
    font-size: var(--font-size-md);
    font-weight: 500;
    color: var(--color-text);
    margin-bottom: var(--spacing-lg);
}

.text-input {
    width: 100%;
    padding: var(--spacing-md);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    font-family: inherit;
    resize: vertical;
    box-sizing: border-box;
    /* 高度随视口宽度变化，并限制最大高度以免占满屏幕 */
    min-height: clamp(9.5rem, 26vw + 3.5rem, 26rem);
    height: clamp(9.5rem, 26vw + 3.5rem, 26rem);
    max-height: min(58vh, 28rem);
    transition: var(--transition-base);
    overflow: auto;
    background-color: var(--color-bg);
    color: var(--color-text);
}

/* 在支持容器查询时，按「文本框所在列宽度」比例计算高度（双栏时更准确） */
@container split-input (min-width: 0) {
    .text-input {
        min-height: clamp(9.5rem, 52cqw + 2rem, 26rem);
        height: clamp(9.5rem, 52cqw + 2rem, 26rem);
    }
}

.text-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 2px var(--color-focus-ring);
}

.text-input::placeholder {
    color: var(--color-text-placeholder);
}

.text-input.error {
    border-color: var(--color-error);
}

.text-input.error::placeholder {
    color: var(--color-error);
}

.char-counter {
    margin-top: var(--spacing-sm);
    font-size: var(--font-size-xs);
    color: var(--color-text-tertiary);
    text-align: right;
}

/* 按钮区域 */
.button-section {
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-huge);
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
    width: 100%;
    padding: 0 var(--spacing-xl);
}

.btn {
    padding: var(--spacing-md) var(--spacing-xxl);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    cursor: pointer;
    transition: var(--transition-base);
    background-color: var(--color-bg);
    color: var(--color-text);
    font-weight: 500;
}

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

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

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

.btn-clear {
    background-color: var(--color-bg);
}

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

/* 设置页面内容 */
.settings-content {
    text-align: center;
    padding: var(--spacing-huge) var(--spacing-xl);
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
}

/* 打赏页面 */
.reward-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-huge) var(--spacing-xl);
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xxxl);
    width: 100%;
    flex: 1;
}

.reward-text {
    font-size: var(--font-size-md);
    line-height: 1.8;
    color: var(--color-text);
    text-align: center;
}

.reward-qr-box {
    width: 300px;
    height: 300px;
    border: 1px solid var(--color-primary);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-bg);
    box-shadow: var(--shadow-sm);
    padding: var(--spacing-md);
    overflow: hidden;
}

.reward-qr-image {
    width: 100%;
    height: 100%;
    object-fit: contain;
    border-radius: var(--radius-sm);
}

.reward-qr-placeholder {
    font-size: var(--font-size-lg);
    color: var(--color-primary);
    font-weight: 500;
}

.reward-thanks {
    font-size: var(--font-size-md);
    color: var(--color-text);
    text-align: center;
}

#reward-page.active {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    width: 100%;
    overflow: visible;
    position: relative;
}

/* 待实现提示 */
.coming-soon-wrapper {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-xxxl);
}

.coming-soon-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-tertiary);
    cursor: pointer;
    transition: var(--transition-base);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--color-bg-hover);
}

.coming-soon-icon:hover {
    color: var(--color-primary);
    background-color: var(--color-bg-active);
}

.coming-soon-icon svg {
    width: 20px;
    height: 20px;
}

.coming-soon-tooltip {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(var(--spacing-md));
    background-color: var(--color-tooltip);
    color: var(--color-bg);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-base);
    z-index: 10000;
    margin-top: var(--spacing-sm);
    box-shadow: var(--shadow-md);
    pointer-events: none;
    max-width: 400px;
    min-width: 250px;
    white-space: normal;
}

.coming-soon-tooltip::after {
    content: '';
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    border: 6px solid transparent;
    border-bottom-color: var(--color-tooltip);
    z-index: 10001;
}

.coming-soon-wrapper:hover .coming-soon-tooltip {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .input-section {
        flex-direction: column;
    }

    .input-group {
        min-width: 100%;
    }

    .main-title {
        font-size: 24px;
    }

    .nav-links {
        gap: 20px;
    }

    .nav-link {
        font-size: 14px;
    }

    .nav-link-tooltip::after {
        max-width: 350px;
        min-width: 250px;
        left: 50%;
        transform: translateX(-50%) translateY(8px);
    }

    .nav-link-tooltip:hover::after {
        transform: translateX(-50%) translateY(0);
    }

    .tooltip {
        max-width: calc(100vw - 32px);
        min-width: min(300px, calc(100vw - 32px));
        left: 50%;
        transform: translateX(-50%) translateY(10px);
    }

    .tooltip.show {
        transform: translateX(-50%) translateY(0);
    }

    .tooltip::before {
        left: 50%;
        transform: translateX(-50%);
    }

    .coming-soon-tooltip {
        max-width: 350px;
        min-width: 250px;
        white-space: normal;
        left: 50%;
        transform: translateX(-50%) translateY(10px);
    }

    .coming-soon-wrapper:hover .coming-soon-tooltip {
        transform: translateX(-50%) translateY(0);
    }
}

/* 弹窗样式 */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 10000;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xl);
}

.modal.show {
    display: flex;
}

.modal-content {
    background-color: var(--color-bg);
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 600px;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-lg);
    animation: modalSlideIn 0.3s ease-out;
}

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

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-lg) var(--spacing-xl);
    border-bottom: 1px solid var(--color-border-light);
}

.modal-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--color-text);
    margin: 0;
}

.modal-close {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--color-text-tertiary);
    padding: var(--spacing-xs);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-base);
    border-radius: var(--radius-sm);
}

.modal-close:hover {
    color: var(--color-text);
    background-color: var(--color-bg-hover);
}

.modal-close svg {
    width: 20px;
    height: 20px;
}

.modal-body {
    padding: var(--spacing-xl);
    overflow-y: auto;
    flex: 1;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-md);
    padding: var(--spacing-lg) var(--spacing-xl);
    border-top: 1px solid var(--color-border-light);
}

/* 规则设置区域 */
.rule-section {
    margin-bottom: var(--spacing-xxl);
}

.rule-section:last-child {
    margin-bottom: 0;
}

.rule-section-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    position: relative;
}

.rule-label {
    font-size: var(--font-size-md);
    font-weight: 500;
    color: var(--color-text);
}

.rule-info-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-tertiary);
    cursor: pointer;
    transition: var(--transition-base);
    width: 18px;
    height: 18px;
    position: relative;
}

.rule-info-icon:hover {
    color: var(--color-primary);
}

.rule-info-icon svg {
    width: 16px;
    height: 16px;
}

.rule-tooltip {
    position: absolute;
    top: calc(100% + var(--spacing-md));
    left: 0;
    right: auto;
    width: max-content;
    max-width: min(440px, calc(100vw - 24px));
    min-width: min(280px, calc(100vw - 24px));
    background-color: var(--color-tooltip);
    color: var(--color-bg);
    padding: var(--spacing-md) var(--spacing-xxl);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    white-space: normal;
    line-height: 1.5;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s ease, visibility 0.2s ease;
    z-index: 10000;
    box-shadow: var(--shadow-md);
    transform: translateY(-5px);
    pointer-events: none;
}

.rule-tooltip::before {
    content: '';
    position: absolute;
    bottom: 100%;
    left: 9px;
    transform: translateX(-50%);
    border: 6px solid transparent;
    border-bottom-color: var(--color-tooltip);
    z-index: 10001;
}

/* 靠下的表单项：气泡在图标上方展开，避免挡住下方输入区 */
.rule-tooltip--above {
    top: auto;
    bottom: calc(100% + var(--spacing-md));
    transform: translateY(5px);
}

.rule-tooltip--above::before {
    bottom: auto;
    top: 100%;
    left: 9px;
    border-bottom-color: transparent;
    border-top-color: var(--color-tooltip);
}

.rule-info-icon:hover .rule-tooltip,
.rule-info-icon:focus .rule-tooltip,
.rule-info-icon:focus-within .rule-tooltip {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.rule-info-icon:focus {
    outline: none;
}

.rule-info-icon:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
    border-radius: var(--radius-sm);
}

/* 按钮组（Chip） */
.chip-group {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    margin-top: var(--spacing-xs);
}

.chip {
    padding: var(--spacing-sm) var(--spacing-lg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background-color: var(--color-bg);
    color: var(--color-text);
    font-size: var(--font-size-base);
    cursor: pointer;
    transition: var(--transition-base);
    outline: none;
    font-weight: 500;
}

.chip:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.chip.active {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
    color: var(--color-bg);
}

.chip.active:hover {
    background-color: var(--color-primary-hover);
    border-color: var(--color-primary-hover);
    color: var(--color-bg);
}

.chip-group.error {
    border: 1px solid var(--color-error);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

/* 额外输入区域 */
.rule-extra {
    margin-top: var(--spacing-md);
}

.rule-select,
.rule-input {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-md);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    font-family: inherit;
    transition: var(--transition-base);
    background-color: var(--color-bg);
    color: var(--color-text);
}

.rule-select:focus,
.rule-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 2px var(--color-focus-ring);
}

.rule-select.error,
.rule-input.error {
    border-color: var(--color-error);
}

.rule-select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1L6 6L11 1' stroke='%23999' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right var(--spacing-md) center;
    padding-right: 36px;
}

/* 错误提示 */
.error-message {
    color: var(--color-error);
    font-size: var(--font-size-sm);
    margin-top: var(--spacing-md);
    min-height: 18px;
}

/* 结果页面 */
.result-content {
    padding: var(--spacing-md) var(--spacing-xl) var(--spacing-lg);
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
    flex: 1;
}

.result-layout {
    display: flex;
    flex-direction: column;
    gap: calc(var(--spacing-huge) + var(--spacing-xxl));
}

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

.result-section-title {
    font-size: var(--font-size-md);
    font-weight: 500;
    color: var(--color-text);
    margin: 0 0 var(--spacing-xxl) 0;
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--color-border-light);
}

.result-row {
    display: flex;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

.result-row:last-child {
    margin-bottom: 0;
}

.result-box {
    flex: 1;
    display: flex;
    flex-direction: column;
    background-color: var(--color-bg);
    padding: 0;
    overflow: visible;
}

.result-box-full {
    width: 100%;
}

.result-box-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0;
    margin-bottom: var(--spacing-md);
}

.result-box-label {
    font-size: var(--font-size-base);
    font-weight: 400;
    color: var(--color-text);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.copy-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
    border: none;
    border-radius: var(--radius-sm);
    background-color: transparent;
    color: var(--color-text-tertiary);
    font-size: var(--font-size-xs);
    cursor: pointer;
    transition: var(--transition-base);
    font-weight: 400;
}

.copy-btn:hover:not(.disabled):not(:disabled) {
    color: var(--color-primary);
    background-color: var(--color-bg-hover);
}

.copy-btn.disabled,
.copy-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

.copy-btn svg {
    width: 14px;
    height: 14px;
    flex-shrink: 0;
}

.result-textarea-wrapper {
    position: relative;
    flex: 1;
    display: flex;
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-md);
    overflow: hidden;
    background-color: var(--color-bg);
}

.result-textarea {
    flex: 1;
    width: 100%;
    min-height: 200px;
    padding: var(--spacing-md) 6.25rem var(--spacing-md) var(--spacing-md);
    border: none;
    border-radius: 0;
    font-size: var(--font-size-sm);
    font-weight: 400;
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', 'Consolas', 'source-code-pro', monospace;
    line-height: 1.6;
    resize: vertical;
    background-color: var(--color-bg);
    color: var(--color-text);
    overflow-y: auto;
}

.result-textarea:focus {
    outline: none;
}

.result-element-count {
    font-size: inherit;
    font-variant-numeric: tabular-nums;
    font-weight: 400;
    line-height: inherit;
    pointer-events: none;
    user-select: none;
}

.result-element-count::before {
    content: '(';
    font-weight: 400;
}

.result-element-count::after {
    content: ')';
    font-weight: 400;
}

/* 结果区：复制与数量合一为胶囊按钮（蓝字 + 浅灰底，与整页协调） */
.copy-btn.copy-btn-inside {
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    z-index: 2;
    gap: 4px;
    padding: 5px 10px;
    border: none;
    border-radius: 999px;
    background-color: var(--color-result-copy-bg);
    color: var(--color-result-copy);
    font-size: var(--font-size-sm);
    font-weight: 400;
    line-height: 1.35;
    box-shadow: none;
    align-items: baseline;
    white-space: nowrap;
    max-width: calc(100% - var(--spacing-md));
    opacity: 0.4;
    transition: opacity 0.2s ease, color 0.2s ease, background-color 0.2s ease;
}

.copy-btn.copy-btn-inside:hover:not(.disabled):not(:disabled),
.copy-btn.copy-btn-inside:focus-visible:not(.disabled):not(:disabled) {
    opacity: 1;
    color: var(--color-result-copy-hover);
    background-color: var(--color-result-copy-bg-hover);
}

.copy-btn.copy-btn-inside .result-element-count {
    color: var(--color-result-copy);
    font-weight: 400;
}

.copy-btn.copy-btn-inside:hover:not(.disabled):not(:disabled) .result-element-count,
.copy-btn.copy-btn-inside:focus-visible:not(.disabled):not(:disabled) .result-element-count {
    color: var(--color-result-copy-hover);
}

.copy-btn-inside.disabled,
.copy-btn-inside:disabled {
    opacity: 0.22;
    cursor: not-allowed;
    pointer-events: none;
}

/* 响应式设计 - 弹窗 */
@media (max-width: 768px) {
    .modal-content {
        max-width: 100%;
        margin: 0;
        border-radius: 8px 8px 0 0;
        max-height: 95vh;
    }

    .chip-group {
        flex-direction: column;
    }

    .chip {
        width: 100%;
        text-align: center;
    }

    .rule-tooltip {
        max-width: calc(100vw - 48px);
        min-width: min(280px, calc(100vw - 48px));
    }
}

/* 响应式设计 - 结果页面 */
@media (max-width: 768px) {
    .result-row {
        flex-direction: column;
    }

    .result-box {
        width: 100%;
    }

    .result-textarea {
        min-height: 150px;
        padding: 12px 5.75rem 12px 12px;
    }

    .copy-btn.copy-btn-inside {
        top: 6px;
        right: 6px;
        padding: 4px 8px;
        font-size: 12px;
    }

    .reward-content {
        padding: 30px 15px;
        gap: 25px;
    }

    .reward-text {
        font-size: 14px;
    }

    .reward-qr-box {
        width: 250px;
        height: 250px;
    }

    .reward-qr-image {
        width: 100%;
        height: 100%;
        object-fit: contain;
    }

    .reward-qr-placeholder {
        font-size: 16px;
    }

    .reward-thanks {
        font-size: 14px;
    }
}