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

/* 启动页面样式 */
#splash-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #FF7000, #FF9500);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    transition: opacity 1s ease;
}

.splash-content {
    text-align: center;
    color: white;
}

.splash-content h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
    100% {
        transform: scale(1);
    }
}

#splash-screen.fade-out {
    opacity: 0;
}

:root {
    --primary-color: #FF7000;
    --secondary-color: #FF9500;
    --dark-color: #333333;
    --gray-color: #6C757D;
    --light-color: #FFFFFF;
    --border-color: #EEEEEE;
    --success-color: #28A745;
    --warning-color: #FFC107;
    --danger-color: #DC3545;
    --bg-color: #FFFFFF;
    --card-bg: #FFFFFF;
    --font-main: 'Helvetica Neue', Arial, sans-serif;
    --transition: all 0.2s ease;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 2px 8px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 4px 16px rgba(0, 0, 0, 0.08);
    --border-radius: 8px;
}

body {
    font-family: var(--font-main);
    line-height: 1.4;
    color: var(--dark-color);
    background-color: var(--bg-color);
    overflow-x: hidden;
    padding-top: 45px; /* 为固定导航栏留出空间 - 减小 */
}

/* 全局滚动条样式 */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--light-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background: var(--secondary-color);
    border-radius: 4px;
    transition: var(--transition);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-color);
}

/* 容器 - 美化增强 */
.container {
    width: 100%;
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 15px;
}

/* 主内容区域 */
.main-content {
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    margin-top: 15px;
    margin-bottom: 30px;
    overflow: hidden;
    position: relative;
}

.main-content::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 5px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
}

/* 导航栏 */
.navbar {
    background-color: white;
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
    background-color: white;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 20px;
}

.logo img {
    max-height: 40px;
    transition: var(--transition);
}

.logo img:hover {
    transform: scale(1.05);
}

.nav-links {
    display: flex;
    gap: 15px;
}

.nav-link {
    color: var(--dark-color);
    text-decoration: none;
    font-weight: 500;
    padding: 6px 12px;
    border-radius: 8px;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 6px;
    position: relative;
    font-size: 0.9rem;
}

.nav-link:hover {
    background-color: var(--light-color);
    color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: var(--transition);
    transform: translateX(-50%);
}

.nav-link:hover::after {
    width: 80%;
}

/* 主内容区域 */
.main-content {
    padding: 10px 0;
}

/* 通用Section样式 - 美化增强 */
.section {
    margin-bottom: 5px;
    opacity: 0;
    transform: translateY(15px);
    animation: fadeInUp 0.6s ease forwards;
    padding: 15px 0 10px 0;
    transition: var(--transition);
}

.section:hover {
    background-color: rgba(0, 0, 0, 0.01);
}

.section:nth-child(1) { animation-delay: 0.1s; }
.section:nth-child(2) { animation-delay: 0.2s; }
.section:nth-child(3) { animation-delay: 0.3s; }
.section:nth-child(4) { animation-delay: 0.4s; }
.section:nth-child(5) { animation-delay: 0.5s; }
.section:nth-child(6) { animation-delay: 0.6s; }

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

.section-title {
    font-size: 1.6rem;
    font-weight: 600;
    color: var(--dark-color);
    margin-bottom: 15px;
    padding-bottom: 8px;
    position: relative;
    display: flex;
    align-items: center;
    gap: 12px;
}

.section-title::before {
    content: '';
    position: absolute;
    bottom: -3px;
    left: 0;
    width: 80px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: 3px;
}

.section-title i {
    font-size: 32px;
    color: var(--primary-color);
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 80px;
    height: 4px;
    background-color: var(--primary-color);
    border-radius: 2px;
}

.section-title i {
    color: var(--primary-color);
    font-size: 1.8rem;
}

/* 卡片通用样式 */
.card {
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    padding: 18px;
    margin-bottom: 15px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

/* 项目概览卡片 - 美化增强 */
.overview-card {
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    padding: 18px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
    transition: var(--transition);
    border: 1px solid var(--border-color);
    overflow: hidden;
    position: relative;
}

.overview-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 5px;
    height: 100%;
    background: linear-gradient(to bottom, var(--primary-color), var(--secondary-color));
}

.overview-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
}

.overview-item {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-bottom: 15px;
    transition: var(--transition);
    padding: 8px 12px;
    border-radius: 8px;
    background-color: white;
    position: relative;
    z-index: 1;
}

.overview-item:hover {
    background-color: rgba(255, 112, 0, 0.03);
    transform: translateX(2px);
}

.overview-item:last-child {
    margin-bottom: 0;
}

.overview-item label {
    font-weight: 500;
    color: var(--gray-color);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.3px;
    position: relative;
    margin-bottom: 3px;
}

.overview-item label::after {
    content: '：';
    position: absolute;
    right: 5px;
}

/* 可编辑输入框样式 */
.editable-input {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 1.1rem;
    font-family: var(--font-main);
    color: var(--dark-color);
    background-color: white;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.editable-input::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 112, 0, 0.1), transparent);
    transition: var(--transition);
}

.editable-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(255, 112, 0, 0.15);
    transform: translateY(-1px);
}

.editable-input:focus::before {
    left: 100%;
}

.editable-input.small-input {
    width: auto;
    font-size: 1rem;
    padding: 8px 12px;
}

/* 标签页容器 */
.tab-container {
    background-color: white;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    overflow: hidden;
}

/* 预算清单板块样式 - 美化增强 */
.budget-section {
    margin-bottom: 25px;
    padding: 20px;
    background-color: white;
    border-radius: 12px;
    border: 1px solid rgba(0, 0, 0, 0.05);
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

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

.section-subtitle {
    font-size: 18px;
    font-weight: 600;
    color: var(--dark-color);
    margin-bottom: 15px;
    padding-bottom: 8px;
    border-bottom: 3px solid var(--primary-color);
    display: flex;
    align-items: center;
    gap: 8px;
}



/* 签名图片样式 */
.signature-image {
    max-width: 100%;
    max-height: 80px;
    border: 1px solid #ddd;
    border-radius: 4px;
}

.tabs {
    display: flex;
    background-color: var(--light-color);
    border-bottom: 1px solid var(--border-color);
}

.tab-btn {
    padding: 15px 30px;
    border: none;
    background-color: transparent;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 500;
    color: var(--gray-color);
    transition: var(--transition);
    border-bottom: 3px solid transparent;
}

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

.tab-btn:hover:not(.active) {
    background-color: rgba(255, 112, 0, 0.05);
    color: var(--primary-color);
}

.tab-content {
    display: none;
    padding: 20px;
}

.tab-content.active {
    display: block;
}

/* 表格响应式容器 */
.table-responsive {
    overflow-x: auto;
}

/* 预算表格样式 */
.budget-table {
    width: 100%;
    border-collapse: collapse;
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    margin-bottom: 20px;
    border: 1px solid var(--border-color);
}

.budget-table th,
.budget-table td {
    padding: 8px 12px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.9rem;
}

/* 表格行悬停效果 */
.budget-table tr {
    transition: var(--transition);
}

.budget-table tr:hover {
    background-color: rgba(255, 112, 0, 0.05);
}

/* 套餐总计列样式 */
.budget-table .package-total {
    font-weight: bold;
    color: var(--success-color);
    font-size: 14px;
    text-align: center;
    min-width: 80px;
}

/* 计算结果单元格样式 */
.budget-table .management-fee,
.budget-table .design-fee,
.budget-table .miscellaneous-fee {
    text-align: center;
    font-family: var(--font-main);
    color: var(--gray-color);
    font-weight: 500;
}

/* 表头样式 */
.budget-table th {
    background-color: var(--primary-color);
    font-weight: 600;
    color: white;
    padding: 12px;
    text-transform: uppercase;
    font-size: 0.85rem;
    letter-spacing: 0.3px;
}

/* 页脚样式 */
.budget-table tfoot {
    background-color: var(--light-color);
}

.budget-table tfoot th,
.budget-table tfoot td {
    padding: 10px 12px;
    font-weight: 600;
}

.budget-table .text-right {
    text-align: right;
}

.budget-table tbody tr:last-child td {
    border-bottom: none;
}

/* 表格内输入框样式 - 美化增强 */
.table-input {
    width: 100%;
    padding: 10px 12px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    font-family: var(--font-main);
    color: var(--dark-color);
    background-color: white;
    transition: var(--transition);
    box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.05);
}

.table-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(255, 112, 0, 0.15);
    transform: translateY(-1px);
}

.table-input:hover:not(:focus) {
    border-color: var(--secondary-color);
}

/* 小计和总计样式 - 增强视觉效果 */
.subtotal {
    font-weight: 600;
    color: var(--primary-color);
    font-size: 1.05rem;
    background-color: rgba(255, 112, 0, 0.05);
    padding: 8px 12px;
    border-radius: 6px;
    display: inline-block;
    min-width: 80px;
    text-align: center;
}

.total-amount {
    font-weight: 700;
    color: var(--primary-color);
    font-size: 1.35rem;
    background-color: transparent;
    padding: 0;
    border-radius: 0;
    border: none;
    box-shadow: none;
    text-align: left;
    min-width: auto;
    display: inline;
}

/* 表格操作按钮 - 美化增强 */
.table-actions {
    margin-bottom: 20px;
    text-align: right;
}

.action-btn {
    padding: 8px 16px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    box-shadow: var(--shadow-sm);
}

.add-btn {
    background-color: var(--success-color);
    color: white;
}

.add-btn:hover {
    background-color: #218838;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(40, 167, 69, 0.3);
}

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

.add-btn:hover {
    background-color: #218838;
}

.add-row-btn {
    padding: 8px 16px;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 5px;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    transition: var(--transition);
}

.add-row-btn:hover {
    background-color: var(--secondary-color);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(255, 112, 0, 0.3);
}

/* 删除行按钮样式 */
.delete-row-btn {
    background-color: var(--danger-color);
    color: white;
    border: none;
    border-radius: 4px;
    padding: 6px 10px;
    cursor: pointer;
    font-size: 12px;
    margin-left: 5px;
    transition: all 0.3s ease;
    opacity: 0.7;
}

.delete-row-btn:hover {
    background-color: #c82333;
    opacity: 1;
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(220, 53, 69, 0.3);
}

/* 表格行悬停时显示删除按钮 */
.budget-table tbody tr:hover .delete-row-btn {
    opacity: 1;
}

/* 通用按钮样式 - 美化增强 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 20px;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    gap: 6px;
    text-decoration: none;
    font-family: var(--font-main);
    position: relative;
    overflow: hidden;
    z-index: 1;
    text-align: center;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: all 0.6s ease;
    z-index: -1;
}

.btn:hover::before {
    left: 100%;
}

.btn:active {
    transform: scale(0.98);
}

/* 主要按钮 */
.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    box-shadow: 0 4px 12px rgba(255, 112, 0, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(255, 112, 0, 0.4);
}

.btn-primary:active {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(255, 112, 0, 0.3);
}

/* 次要按钮 */
.btn-secondary {
    background: linear-gradient(135deg, var(--secondary-color), #4a70e0);
    color: white;
    box-shadow: 0 4px 12px rgba(255, 149, 0, 0.2);
}

.btn-secondary:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(255, 149, 0, 0.3);
}

.btn-secondary:active {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(255, 149, 0, 0.2);
}

/* 优惠内容卡片 - 优化紧凑 */
.discounts-card {
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    padding: 18px;
    margin-bottom: 15px;
    border: 1px solid var(--border-color);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.discounts-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background-color: var(--primary-color);
}

.discounts-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.discount-item {
    margin-bottom: 15px;
    padding: 18px;
    background-color: white;
    border-radius: 12px;
    transition: var(--transition);
    border-left: 5px solid var(--primary-color);
    box-shadow: var(--shadow-sm);
    position: relative;
    overflow: hidden;
}

.discount-item::after {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, rgba(255, 112, 0, 0.05), transparent);
    border-radius: 50%;
    transform: translate(30%, -30%);
}

.discount-item:last-child {
    margin-bottom: 0;
}

.discount-item:hover {
    transform: translateX(8px);
    box-shadow: var(--shadow-md);
    border-left-color: var(--secondary-color);
}

.discount-item:hover::after {
    transform: translate(20%, -20%);
    background: linear-gradient(135deg, rgba(255, 149, 0, 0.1), transparent);
}

.discount-item h3 {
    color: var(--dark-color);
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.discount-item h3 i {
    color: var(--primary-color);
}

/* 优惠内容编辑器 */
.discount-editor {
    margin-bottom: 15px;
    display: flex;
    flex-direction: column;
    gap: 15px;
    padding: 18px;
    background-color: var(--light-color);
    border-radius: 10px;
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.discount-textarea {
    width: 100%;
    padding: 12px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    font-family: var(--font-main);
    color: var(--dark-color);
    background-color: white;
    min-height: 100px;
    resize: none;
    overflow: hidden;
    line-height: 1.5;
    transition: var(--transition), height 0.3s ease;
}

/* 额外优惠大型输入框样式 */
.discount-large-input {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    transition: var(--transition), height 0.3s ease;
    background-color: white;
    min-height: 50px;
    resize: none;
    overflow: hidden;
    font-family: var(--font-main);
    white-space: normal;
    word-wrap: break-word;
}

.discount-textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(255, 112, 0, 0.15);
}

.discount-large-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(255, 112, 0, 0.15);
}

.discount-note {
    background-color: var(--light-color);
    padding: 15px;
    border-radius: 5px;
}

.discount-note p {
    margin-bottom: 8px;
}

.discount-note p:last-child {
    margin-bottom: 0;
}

.discount-value {
    font-weight: 700;
    color: var(--primary-color);
    font-size: 1.1rem;
}

/* 价格汇总卡片 - 美化增强 */
.summary-card {
    background: linear-gradient(135deg, #fff 0%, #fff9f0 100%);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    padding: 25px;
    border: 2px solid rgba(255, 112, 0, 0.1);
    position: relative;
    overflow: hidden;
}

.summary-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 6px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
}
    transition: var(--transition);
}

.summary-card:hover {
    box-shadow: var(--shadow-lg);
}

/* 问题与诊断卡片 */
.diagnostics-card {
    background-color: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
    padding: 20px;
    border: 1px solid rgba(0, 0, 0, 0.05);
    transition: var(--transition);
}

.diagnostics-card:hover {
    box-shadow: var(--shadow-lg);
}

.diagnostic-item {
    margin-bottom: 15px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-color);
}

.diagnostic-item:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}

.diagnostic-item h3 {
    color: var(--dark-color);
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.2rem;
}

.diagnostic-item h3 i {
    color: var(--danger-color);
}

.diagnostic-item h3 i.fa-check-circle {
    color: var(--success-color);
}

.diagnostic-content {
    padding-left: 30px;
}

.diagnostic-content p {
    margin-bottom: 8px;
    line-height: 1.6;
    color: var(--dark-color);
}

.diagnostic-content p:last-child {
    margin-bottom: 0;
}

.summary-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 0;
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition);
}

.summary-item:hover {
    color: var(--primary-color);
}

.summary-item:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}

.summary-item label {
    font-weight: 600;
    color: var(--dark-color);
    font-size: 1.1rem;
}

.summary-price {
    font-weight: 700;
    color: var(--primary-color);
    font-size: 1.5rem;
}

.summary-note {
    margin-top: 15px;
    padding-top: 15px;
    border-top: 1px solid var(--border-color);
}

.summary-note p {
    color: var(--gray-color);
    font-style: italic;
}

.summary-note i {
    color: var(--warning-color);
    margin-right: 5px;
}

/* 联系信息卡片 - 优化紧凑 */
.contact-card {
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    padding: 18px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 12px;
    border: 1px solid var(--border-color);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.contact-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background-color: var(--primary-color);
}

.contact-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 12px;
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    box-shadow: none;
    transition: var(--transition);
    border-bottom: 2px solid transparent;
}

.contact-item:hover {
    box-shadow: var(--shadow-sm);
    border-bottom-color: var(--primary-color);
    transform: translateY(-1px);
}

.contact-icon-wrapper {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    background-color: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 8px rgba(255, 112, 0, 0.2);
    transition: var(--transition);
}

.contact-item:hover .contact-icon-wrapper {
    transform: scale(1.1) rotate(5deg);
}

.contact-item i {
    color: white;
    font-size: 1.5rem;
    margin: 0;
}

.contact-info {
    flex-grow: 1;
}

.contact-item h4 {
    color: var(--dark-color);
    margin-bottom: 8px;
    font-size: 1.2rem;
    font-weight: 600;
}

.contact-item p {
    color: var(--gray-color);
    margin: 0;
    font-size: 1rem;
    line-height: 1.5;
}

/* 签名区域 - 优化紧凑 */
.signature-area {
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    padding: 18px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 12px;
    position: relative;
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.signature-area::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background-color: var(--primary-color);
}
}

.signature-area:hover {
    box-shadow: var(--shadow-lg);
}

.signature-item {
    display: flex;
    flex-direction: column;
    gap: 10px;
    transition: var(--transition);
}

.signature-item:hover {
    transform: translateY(-3px);
}

.signature-item label {
    font-weight: 600;
    color: var(--dark-color);
    font-size: 1.1rem;
    padding-bottom: 5px;
    border-bottom: 2px solid var(--light-color);
}

.signature-input {
    width: 100%;
    padding: 10px 12px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 0.95rem;
    transition: var(--transition);
}

.signature-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(255, 112, 0, 0.15);
}

/* 签字区域样式 */
.signature-line {
    min-height: 100px;
    border: 2px dashed var(--border-color);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    background-color: rgba(255, 255, 255, 0.5);
    margin-top: 10px;
}

.signature-line:hover {
    border-color: var(--primary-color);
    background-color: rgba(255, 112, 0, 0.08);
    transform: scale(1.02);
}

.signature-line.signature-drawn {
    border: 2px solid var(--primary-color);
    background-color: rgba(255, 112, 0, 0.05);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.signature-line .signature-placeholder {
    color: var(--gray-color);
    text-align: center;
    font-size: 1.1rem;
    transition: var(--transition);
}

.signature-line:hover .signature-placeholder {
    color: var(--primary-color);
}

/* 手写签字模态框样式 */
.signature-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.6);
    z-index: 1000;
    justify-content: center;
    align-items: center;
    backdrop-filter: blur(5px);
}

.signature-modal.active {
    display: flex;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.signature-modal-content {
    background: white;
    padding: 20px;
    border-radius: var(--border-radius);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    width: 90%;
    max-width: 700px;
    animation: slideUp 0.3s ease;
}

@keyframes slideUp {
    from { transform: translateY(30px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

.signature-canvas {
    border: 2px solid var(--border-color);
    width: 100%;
    min-height: 200px; /* 移动设备上的最小高度 */
    max-height: 350px; /* 桌面设备上的最大高度 */
    cursor: crosshair;
    touch-action: none; /* 防止触摸设备上的默认行为 */
    background-color: white;
    border-radius: 8px;
    box-shadow: inset 0 0 10px rgba(0, 0, 0, 0.05);
    /* 优化移动设备上的触摸体验 */
    -webkit-tap-highlight-color: transparent; /* 移除iOS上的点击高亮 */
    display: block;
    margin: 12px auto;
}

/* 移动设备上的特殊样式 */
@media (max-width: 768px) {
    .signature-canvas {
        min-height: 280px; /* 移动设备上增加高度 */
        border-width: 3px; /* 更粗的边框便于识别 */
    }
    
    .signature-modal-content {
        width: 95% !important;
        max-width: none !important;
        margin: 0 10px;
        padding: 20px !important;
    }
    
    .signature-buttons {
        flex-direction: column;
        gap: 10px !important;
    }
    
    .signature-btn {
        width: 100%;
        padding: 15px 0;
        font-size: 18px;
    }
}

.signature-buttons {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    margin-top: 15px;
}

.signature-btn {
    padding: 10px 20px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 600;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.signature-btn.confirm {
    background-color: var(--primary-color);
    color: white;
}

.signature-btn.confirm:hover {
    background-color: var(--secondary-color);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(255, 112, 0, 0.3);
}

.signature-btn.clear {
    background-color: var(--gray-color);
    color: white;
}

.signature-btn.clear:hover {
    opacity: 0.9;
    transform: translateY(-2px);
}

.signature-btn.cancel {
    background-color: var(--light-color);
    color: var(--dark-color);
    border: 1px solid var(--border-color);
}

.signature-btn.cancel:hover {
    background-color: var(--border-color);
    transform: translateY(-2px);
}

/* 签字图片显示 */
.signature-image {
    max-width: 100%;
    max-height: 90px;
    border-radius: 6px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    vertical-align: middle;
}

.signature-image:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-md);
}

/* 页脚版权信息样式 */
.footer-copyright {
    text-align: center;
    margin: 5px 0 0 0;
    padding: 5px 0;
}

.footer-copyright .icp-link {
    color: #FF6600;
    text-decoration: none;
    font-size: 0.9rem;
    transition: var(--transition);
    display: inline-block;
    padding: 3px 5px;
}

.footer-copyright .icp-link:hover {
    color: #FF8833;
    text-decoration: underline;
}

/* 页脚 */
.footer {
    background: linear-gradient(135deg, #1a1a2e, #16213e);
    color: white;
    padding: 20px 0 15px;
    margin-top: 15px;
    position: relative;
    overflow: hidden;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
}

.footer::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 25% 30%, rgba(255, 112, 0, 0.1) 0%, transparent 20%),
        radial-gradient(circle at 75% 70%, rgba(255, 112, 0, 0.1) 0%, transparent 20%);
    pointer-events: none;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 15px;
    position: relative;
    z-index: 1;
}

.footer-logo img {
    max-height: 70px;
    margin-bottom: 25px;
    transition: var(--transition);
}

.footer-logo img:hover {
    transform: scale(1.05);
}

.footer-links h3,
.footer-contact h3 {
    font-size: 1.4rem;
    margin-bottom: 25px;
    color: white;
    position: relative;
    padding-bottom: 10px;
}

.footer-links h3::after,
.footer-contact h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 3px;
    background-color: var(--primary-color);
    border-radius: 2px;
}

.footer-links ul {
    list-style: none;
}

.footer-links li {
    margin-bottom: 15px;
}

.footer-links a {
    color: var(--light-color);
    text-decoration: none;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 1.05rem;
}

.footer-links a:hover {
    color: var(--primary-color);
    transform: translateX(8px);
}

.footer-links a::before {
    content: '→';
    opacity: 0;
    transition: var(--transition);
}

.footer-links a:hover::before {
    opacity: 1;
    transform: translateX(-3px);
}

.footer-contact p {
    margin-bottom: 18px;
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.05rem;
    color: var(--light-color);
    transition: var(--transition);
}

.footer-contact p:hover {
    color: var(--primary-color);
}

.footer-contact i {
    color: var(--primary-color);
    font-size: 1.2rem;
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    position: relative;
    z-index: 1;
}

.footer-bottom p {
    color: var(--gray-color);
    font-size: 0.95rem;
}

/* 回到顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 50%;
    font-size: 1.5rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 999;
    box-shadow: 0 4px 12px rgba(255, 112, 0, 0.3);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background-color: var(--secondary-color);
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(255, 112, 0, 0.4);
}

/* 响应式设计 */
@media (max-width: 1200px) {
    .container {
        padding: 0 20px;
    }
    
    .overview-card {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    }
}

@media (max-width: 992px) {
    .navbar .container {
        padding: 12px 16px;
    }
    
    .nav-links {
        gap: 12px;
    }
    
    .nav-link {
        padding: 6px 10px;
    }
    
    .section-title {
        font-size: 1.6rem;
    }
    
    .signature-area {
        grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
        padding: 18px;
        gap: 12px;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 15px;
    }
    
    .navbar .container {
        flex-direction: column;
        gap: 12px;
        padding: 12px;
    }
    
    .nav-links {
        flex-wrap: wrap;
        justify-content: center;
        gap: 8px;
    }
    
    .nav-link {
        padding: 6px 12px;
        font-size: 0.9rem;
    }
    
    .section {
        margin-bottom: 30px;
        padding: 20px 0;
    }
    
    .section-title {
        font-size: 1.5rem;
        margin-bottom: 12px;
    }
    
    .overview-card {
        grid-template-columns: 1fr;
        padding: 18px;
    }
    
    .discounts-card,
    .summary-card,
    .diagnostics-card,
    .contact-card {
        padding: 18px;
    }
    
    .signature-area {
        grid-template-columns: 1fr;
        gap: 12px;
        padding: 18px;
    }
    
    .contact-card {
        grid-template-columns: 1fr;
        gap: 12px;
    }
    
    .signature-modal-content {
        width: 95%;
        padding: 18px;
    }
    
    .signature-canvas {
        height: 220px;
    }
    
    .footer-content {
        gap: 20px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 10px;
    }
    
    .section-title {
        font-size: 1.3rem;
        margin-bottom: 10px;
    }
    
    .overview-card,
    .discounts-card,
    .summary-card,
    .diagnostics-card,
    .contact-card,
    .signature-area {
        padding: 15px;
    }
    
    .btn {
        padding: 8px 16px;
        font-size: 0.9rem;
        width: 100%;
    }
    
    .editable-input {
        padding: 8px 10px;
        font-size: 0.9rem;
    }
    
    .signature-btn {
        width: 100%;
        justify-content: center;
        padding: 8px 16px;
    }
    
    .footer {
        padding: 25px 0 15px;
    }
    
    .footer-content {
        gap: 15px;
    }
}

/* 打印样式 */
@media print {
    .navbar,
    .footer,
    .back-to-top,
    .table-actions {
        display: none !important;
    }
    
    body {
        background-color: white;
        color: black;
    }
    
    .main-content {
        padding: 0;
    }
    
    .section {
        margin-bottom: 30px;
        break-inside: avoid;
    }
    
    .section-title {
        border-bottom: 2px solid #000;
    }
    
    .budget-table,
    .budget-table th,
    .budget-table td {
        border: 1px solid #000 !important;
        border-collapse: collapse;
    }
    
    .overview-card,
    .discounts-card,
    .summary-card,
    .contact-card,
    .signature-area {
        box-shadow: none;
        border: 1px solid #000;
        break-inside: avoid;
    }
    
    /* 移除打印时的输入框边框 */
    .editable-input,
    .table-input,
    .discount-textarea {
        border: none;
        background-color: transparent;
        box-shadow: none;
    }
}

/* 数字动画效果 */
@keyframes countUp {
    from { opacity: 0.5; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.total-amount,
.summary-price,
.discount-value {
    animation: countUp 0.6s ease-out;
}

/* 输入框焦点状态增强 */
.editable-input:focus,
.table-input:focus,
.discount-textarea:focus {
    position: relative;
    z-index: 1;
}

/* 鼠标悬停在可编辑区域时的提示 */
.editable-input:hover,
.table-input:hover,
.discount-textarea:hover {
    border-color: var(--secondary-color);
    background-color: rgba(255, 112, 0, 0.02);
}

/* 使表格行具有更好的悬停效果 */
.budget-table tbody tr {
    transition: all 0.2s ease;
}

.budget-table tbody tr:hover {
    background-color: rgba(255, 112, 0, 0.05);
    transform: scale(1.005);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

/* 平滑滚动 */
html {
    scroll-behavior: smooth;
}