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

:root {
    --primary-color: #667eea;
    --primary-light: #8fa0f5;
    --primary-dark: #4c5fd8;
    --primary-gradient: linear-gradient(135deg, var(--primary-color) 0%, #764ba2 100%);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    background: #ffffff;
    min-height: 100vh;
    color: #333;
    line-height: 1.6;
    overflow-x: hidden;
}

.scenic-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
}

.scenic-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    transition: opacity 1s ease;
}

#app {
    position: relative;
    z-index: 1;
}

.page {
    display: none;
    min-height: 100vh;
}

.page.active {
    display: block;
}

/* 登录页面 */
.login-container {
    max-width: 380px;
    margin: 80px auto;
    padding: 40px 30px;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
    backdrop-filter: blur(10px);
}

.login-header {
    text-align: center;
    margin-bottom: 40px;
}

.login-icon {
    font-size: 60px;
    margin-bottom: 15px;
}

.login-header h1 {
    font-size: 28px;
    color: #333;
    font-weight: 600;
}

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

.form-group input {
    width: 100%;
    padding: 16px;
    border: 2px solid #e8e8e8;
    border-radius: 12px;
    font-size: 16px;
    transition: all 0.3s;
}

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

/* 按钮样式 */
.btn {
    padding: 14px 24px;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 500;
    transition: all 0.3s;
}

.btn-primary {
    background: var(--primary-gradient);
    color: #fff;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(102, 126, 234, 0.4);
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
}

.btn-outline:hover {
    background: var(--primary-color);
    color: #fff;
}

.btn-full {
    width: 100%;
}

.btn-large {
    padding: 18px 24px;
    font-size: 18px;
}

.btn-icon {
    background: rgba(255, 255, 255, 0.25);
    color: #fff;
    padding: 10px 15px;
    border-radius: 10px;
    font-size: 20px;
}

.btn-icon:hover {
    background: rgba(255, 255, 255, 0.35);
}

.btn-icon-dark {
    background: rgba(0, 0, 0, 0.1);
    color: #333;
    padding: 10px 15px;
    border-radius: 10px;
    font-size: 20px;
}

/* 主页头部 */
.header {
    background: var(--primary-gradient);
    color: #fff;
    padding: 15px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.header h1 {
    font-size: 20px;
    font-weight: 600;
}

.header-left, .header-right {
    display: flex;
    align-items: center;
    gap: 8px;
}

.header-right {
    min-width: 140px;
    justify-content: flex-end;
}

.user-info {
    font-size: 14px;
    opacity: 0.9;
}

/* 内容区域 */
.content {
    padding: 20px;
}

.notebook-list {
    margin-top: 20px;
}

.notebook-item {
    background: rgba(255, 255, 255, 0.95);
    padding: 24px;
    margin-bottom: 15px;
    border-radius: 16px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    cursor: pointer;
    transition: all 0.3s;
    backdrop-filter: blur(10px);
}

.notebook-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.notebook-item:active {
    transform: scale(0.98);
}

.notebook-item h3 {
    font-size: 18px;
    color: #333;
    margin-bottom: 8px;
}

.notebook-item p {
    color: #999;
    font-size: 13px;
}

/* 账单固定头部 */
.bill-fixed-header {
    background: var(--primary-gradient);
    padding: 15px 20px;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.bill-header-row {
    display: flex;
    align-items: center;
    gap: 15px;
}

.bill-title-wrap {
    flex: 1;
    text-align: center;
}

.bill-title-wrap h2 {
    color: #fff;
    font-size: 22px;
    letter-spacing: 4px;
}

.bill-notebook-title {
    color: rgba(255, 255, 255, 0.8);
    font-size: 12px;
    margin-top: 2px;
}

.bill-no {
    color: rgba(255, 255, 255, 0.8);
    font-size: 12px;
}

/* 账单卡片 */
.bill-container {
    padding: 15px;
}

.bill-card {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 20px;
    padding: 25px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
}

/* 可折叠区域 */
.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
    cursor: pointer;
    border-bottom: 1px solid #f0f0f0;
}

.section-title {
    font-size: 16px;
    font-weight: 600;
    color: #333;
}

.section-toggle {
    font-size: 12px;
    color: #999;
    transition: transform 0.3s;
}

.section-toggle.collapsed {
    transform: rotate(-90deg);
}

.company-section, .customer-section {
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.company-section.collapsed, .customer-section.collapsed {
    max-height: 0;
}

.company-section, .customer-section {
    max-height: 500px;
}

/* 信息区域 */
.info-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
    padding: 15px 0;
}

.info-item {
    display: flex;
    flex-direction: column;
}

.info-item.full-width {
    grid-column: span 2;
}

.info-item label {
    font-size: 12px;
    color: #999;
    margin-bottom: 6px;
}

.info-input {
    padding: 12px 14px;
    border: 1px solid #e8e8e8;
    border-radius: 10px;
    font-size: 14px;
    transition: all 0.3s;
    background: #fafafa;
}

.info-input:focus {
    outline: none;
    border-color: var(--primary-color);
    background: #fff;
}

.info-input:read-only {
    background: #f5f5f5;
    color: #999;
    cursor: not-allowed;
}

/* 日期选择 */
.date-section {
    margin: 20px 0;
}

.date-section > label {
    display: block;
    font-size: 12px;
    color: #999;
    margin-bottom: 10px;
}

.date-picker-row {
    display: flex;
    align-items: center;
    gap: 10px;
}

.btn-date {
    width: 50px;
    height: 44px;
    font-size: 18px;
    background: var(--primary-gradient);
    color: #fff;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-date:hover {
    transform: scale(1.05);
}

.date-input {
    flex: 1;
    padding: 12px;
    border: 2px solid #e8e8e8;
    border-radius: 10px;
    font-size: 16px;
    text-align: center;
}

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

/* 表格 */
.table-section {
    margin-bottom: 20px;
    overflow-x: auto;
}

.bill-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
}

.bill-table th {
    background: var(--primary-gradient);
    color: #fff;
    padding: 14px 8px;
    font-weight: 500;
    white-space: nowrap;
}

.bill-table th:first-child {
    border-radius: 10px 0 0 0;
}

.bill-table th:last-child {
    border-radius: 0 10px 0 0;
}

.bill-table td {
    padding: 14px 8px;
    border-bottom: 1px solid #f0f0f0;
    text-align: center;
}

.bill-table tbody tr:hover {
    background: #f9f9f9;
}

.quantity-cell {
    cursor: pointer;
    color: var(--primary-color);
    font-weight: 500;
}

.quantity-cell:hover {
    background: #f0f0ff;
    border-radius: 8px;
}

/* 合计区域 */
.total-section {
    background: var(--primary-gradient);
    border-radius: 16px;
    padding: 20px;
    margin-bottom: 25px;
}

.total-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: #fff;
}

.total-row:first-child {
    margin-bottom: 10px;
}

.total-label {
    font-size: 14px;
    opacity: 0.9;
}

.total-cn {
    font-size: 18px;
    font-weight: 600;
    letter-spacing: 1px;
}

.total-number {
    font-size: 28px;
    font-weight: 700;
}

/* 图片区域 */
.image-section {
    margin-top: 20px;
}

.action-buttons-row {
    display: flex;
    gap: 12px;
    margin-top: 20px;
}

.action-buttons-row .btn {
    flex: 1;
}

.image-list {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
    margin-top: 15px;
}

.image-item {
    position: relative;
    width: calc(20% - 10px);
    min-width: 80px;
    max-width: 120px;
    padding-top: calc(20% - 10px);
    min-height: 80px;
    max-height: 120px;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.image-item img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    cursor: pointer;
    transition: transform 0.3s;
}

.image-item img:hover {
    transform: scale(1.05);
}

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

.modal-overlay.active {
    display: flex;
}

.modal {
    background: #fff;
    border-radius: 20px;
    padding: 30px;
    max-width: 450px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.modal h2 {
    margin-bottom: 25px;
    color: #333;
    font-size: 20px;
    text-align: center;
}

.modal-form-group {
    margin-bottom: 18px;
}

.modal-form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: #666;
}

.modal-form-group input,
.modal-form-group select {
    width: 100%;
    padding: 14px;
    border: 2px solid #e8e8e8;
    border-radius: 10px;
    font-size: 15px;
    transition: all 0.3s;
}

.modal-form-group input:focus,
.modal-form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
}

.modal-buttons {
    display: flex;
    gap: 12px;
    margin-top: 25px;
}

.modal-buttons .btn {
    flex: 1;
}

.category-list {
    max-height: 280px;
    overflow-y: auto;
    margin-bottom: 15px;
}

.category-item {
    padding: 16px;
    border-bottom: 1px solid #f0f0f0;
    cursor: pointer;
    transition: all 0.3s;
}

.category-item:hover {
    background: #f9f9f9;
}

.category-item div:first-child {
    font-weight: 600;
    color: #333;
    margin-bottom: 4px;
}

.category-item div:last-child {
    color: #999;
    font-size: 13px;
}

.color-picker-wrap {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 20px;
}

.color-preview {
    width: 60px;
    height: 60px;
    border-radius: 12px;
    border: 3px solid #e8e8e8;
}

.color-picker-input {
    flex: 1;
}

.image-preview-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    z-index: 2000;
    display: flex;
    justify-content: center;
    align-items: center;
}

.image-preview-modal img {
    max-width: 95%;
    max-height: 95%;
    border-radius: 10px;
}

/* 响应式 */
@media (max-width: 600px) {
    .login-container {
        margin: 40px 20px;
        padding: 30px 25px;
    }

    .login-icon {
        font-size: 50px;
    }

    .login-header h1 {
        font-size: 24px;
    }

    .header-right {
        min-width: auto;
    }

    .info-grid {
        grid-template-columns: 1fr;
    }

    .info-item.full-width {
        grid-column: span 1;
    }

    .bill-type {
        font-size: 18px;
    }

    .bill-table {
        font-size: 12px;
    }

    .bill-table th, .bill-table td {
        padding: 10px 5px;
    }

    .total-cn {
        font-size: 14px;
    }

    .total-number {
        font-size: 24px;
    }

    .modal {
        padding: 25px 20px;
        margin: 20px;
        width: calc(100% - 40px);
    }
}

/* 打印样式 */
@media print {
    body {
        background: white;
    }

    .scenic-bg,
    .header,
    .bill-fixed-header,
    #add-record-btn,
    .action-buttons-row,
    .image-section,
    .modal-overlay,
    .btn,
    .section-header {
        display: none !important;
    }

    #app {
        position: static;
    }

    .page {
        display: none !important;
    }

    .page.active {
        display: block !important;
    }

    .bill-container {
        padding: 0;
    }

    .bill-card {
        box-shadow: none;
        padding: 20px;
        max-width: 210mm;
        margin: 0 auto;
    }

    .info-grid {
        border: 1px solid #000;
    }

    .info-item {
        border: 1px solid #000;
        padding: 5px;
    }

    .bill-table {
        border: 1px solid #000;
    }

    .bill-table th,
    .bill-table td {
        border: 1px solid #000;
        padding: 8px;
    }

    .total-section {
        background: white !important;
        border: 1px solid #000;
        color: black;
    }

    .total-row {
        color: black;
    }

    .company-section,
    .customer-section {
        max-height: none !important;
        display: block !important;
    }
}

/* 打印模板样式 */
.print-bill {
    width: 210mm;
    min-height: 148mm;
    padding: 5mm 8mm;
    font-family: 'SimSun', '宋体', serif;
    font-size: 9pt;
    background: white;
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
}

.print-content {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.print-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    border-bottom: 1px solid #000;
    padding-bottom: 5px;
    margin-bottom: 5px;
}

.print-company-name {
    font-size: 11pt;
    font-weight: bold;
}

.print-company-info {
    font-size: 8pt;
    color: #333;
}

.print-title {
    font-size: 14pt;
    font-weight: bold;
    text-align: center;
}

.print-meta {
    text-align: right;
    font-size: 8pt;
}

.print-meta-item {
    margin-bottom: 2px;
}

.print-customer {
    padding: 4px 0;
    border-bottom: 1px solid #000;
    margin-bottom: 5px;
    font-size: 8pt;
}

.print-customer-info {
    margin-bottom: 2px;
}

.print-table {
    width: 100%;
    table-layout: fixed;
    border-collapse: collapse;
    margin-bottom: 5px;
}

.print-table th,
.print-table td {
    border: 1px solid #000;
    padding: 3px 4px;
    text-align: center;
    font-size: 8pt;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    word-break: break-all;
}

.print-table th {
    background: #f0f0f0;
    font-weight: bold;
}

.print-table th:nth-child(1),
.print-table td:nth-child(1) {
    width: 8%;
}

.print-table th:nth-child(2),
.print-table td:nth-child(2) {
    width: 30%;
    text-align: left;
}

.print-table th:nth-child(3),
.print-table td:nth-child(3) {
    width: 12%;
}

.print-table th:nth-child(4),
.print-table td:nth-child(4) {
    width: 10%;
}

.print-table th:nth-child(5),
.print-table td:nth-child(5) {
    width: 15%;
}

.print-table th:nth-child(6),
.print-table td:nth-child(6) {
    width: 15%;
}

.print-table tbody tr {
    page-break-inside: avoid;
    orphans: 2;
    widows: 2;
}

.print-total {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 5px 0;
    border-top: 1px solid #000;
    font-weight: bold;
    font-size: 9pt;
}

.print-total-cn {
    font-size: 9pt;
}

.print-total-num {
    font-size: 10pt;
}

.print-footer {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-top: 8px;
    font-size: 8pt;
}

.print-signature {
    display: flex;
    gap: 20px;
}

.print-company-wechat {
    text-align: right;
}

.print-page {
    page-break-after: always;
}

.print-page:last-child {
    page-break-after: avoid;
}

@media print {
    .print-bill {
        display: block !important;
    }

    @page {
        margin: 0;
    }

    html, body {
        margin: 0;
        padding: 0;
    }
}