body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", "Liberation Sans", sans-serif;
}

/* 主题模式：白天 / 夜间 */
.theme-light {
    --bg-body: #f3f4f6;
    --bg-card: #ffffff;
    --bg-sidebar: #111827;
    --bg-navbar: #ffffff;
    --text-main: #111827;
    --text-muted: #6b7280;
    --border-subtle: rgba(15, 23, 42, 0.08);
}

.theme-dark {
    --bg-body: #020617;
    --bg-card: #020617;
    --bg-sidebar: #020617;
    --bg-navbar: #020617;
    --text-main: #e5e7eb;
    --text-muted: #9ca3af;
    --border-subtle: rgba(148, 163, 184, 0.3);

    /* 覆盖 Bootstrap 内置变量，让默认文字和卡片在暗黑模式下自动变亮 */
    --bs-body-bg: #020617;
    --bs-body-color: #e5e7eb;
    --bs-card-bg: #020617;
    --bs-card-border-color: var(--border-subtle);
    --bs-border-color: var(--border-subtle);
    --bs-heading-color: #e5e7eb;
    --bs-secondary-color: #9ca3af; /* text-body-secondary 等 */
    --bs-secondary-bg: #020617;
    --bs-tertiary-bg: #020617;
    --bs-table-bg: transparent;
    --bs-table-color: #e5e7eb;
    --bs-table-striped-bg: rgba(148, 163, 184, 0.08);
    --bs-table-striped-color: #e5e7eb;
    --bs-link-color: #38bdf8;
    --bs-link-hover-color: #0ea5e9;
}

body.theme-light,
body.theme-dark {
    background-color: var(--bg-body) !important;
    color: var(--text-main);
}

body.theme-dark .card {
    background-color: var(--bg-card);
    border-color: var(--border-subtle);
}

body.theme-dark .navbar,
body.theme-dark .navbar.navbar-light {
    background-color: var(--bg-navbar) !important;
    border-bottom: 1px solid var(--border-subtle);
}

body.theme-dark .sidebar {
    background-color: var(--bg-sidebar) !important;
}

body.theme-dark .sidebar .list-group-item {
    background-color: transparent;
    color: #e5e7eb;
}

body.theme-dark .sidebar .list-group-item:hover {
    background-color: rgba(148, 163, 184, 0.2);
}

body.theme-dark .list-group-item,
body.theme-dark .table,
body.theme-dark .form-control,
body.theme-dark .form-select {
    background-color: #020617;
    color: var(--text-main);
    border-color: var(--border-subtle);
}

body.theme-dark .form-control:focus,
body.theme-dark .form-select:focus {
    background-color: #020617;
    color: var(--text-main);
}

body.theme-dark .text-muted,
body.theme-dark .form-text {
    color: var(--text-muted) !important;
}

body.theme-dark .table thead,
body.theme-dark .table-light {
    background-color: #020617;
}

/* 夜间模式下对常见 Bootstrap 颜色类做整体调优，避免反色或对比度不足 */
body.theme-dark .bg-white,
body.theme-dark .bg-light {
    background-color: #020617 !important;
}

body.theme-dark .navbar.bg-white {
    background-color: #020617 !important;
}

body.theme-dark .card,
body.theme-dark .card-body,
body.theme-dark .card-footer,
body.theme-dark .card-header {
    background-color: #020617;
    border-color: var(--border-subtle);
    box-shadow: 0 0.35rem 1.2rem rgba(15, 23, 42, 0.55);
}

body.theme-dark .border-0 {
    border-color: transparent !important;
}

body.theme-dark .text-dark,
body.theme-dark .text-body,
body.theme-dark .text-body-secondary,
body.theme-dark .text-secondary {
    color: var(--text-main) !important;
}

body.theme-dark .text-muted {
    color: var(--text-muted) !important;
}

body.theme-dark .table {
    color: var(--text-main);
}

/* 暗黑模式下，所有表格的单元格文字默认使用浅色，便于阅读明细列表 */
body.theme-dark table thead th,
body.theme-dark table tbody td {
    color: var(--text-main);
}

body.theme-dark .table-striped > tbody > tr:nth-of-type(odd) > * {
    --bs-table-accent-bg: rgba(148, 163, 184, 0.08);
}

/* 用户管理表格在不同主题下的文字与边框颜色优化 */
body.theme-light .settings-users-table thead th,
body.theme-light .settings-users-table tbody td {
    color: #111827;
    border-color: rgba(15, 23, 42, 0.08);
}

body.theme-dark .settings-users-table thead,
body.theme-dark .settings-users-table thead th {
    background-color: #020617;
}

body.theme-dark .settings-users-table thead th,
body.theme-dark .settings-users-table tbody td {
    color: #e5e7eb !important;
    border-color: rgba(148, 163, 184, 0.4);
}

body.theme-dark .form-control,
body.theme-dark .form-select {
    background-color: #020617;
    color: var(--text-main);
    border-color: var(--border-subtle);
}

body.theme-dark .form-control:focus,
body.theme-dark .form-select:focus {
    background-color: #020617;
    color: var(--text-main);
    border-color: #38bdf8;
    box-shadow: 0 0 0 0.15rem rgba(56, 189, 248, 0.25);
}

body.theme-dark .nav-tabs .nav-link {
    color: var(--text-muted);
}

body.theme-dark .nav-tabs .nav-link.active {
    color: var(--text-main);
    background-color: #020617;
    border-color: var(--border-subtle) var(--border-subtle) #020617;
}

body.theme-dark .alert {
    border-color: var(--border-subtle);
}

/* 顶部主题切换按钮优化 */
.btn-theme-toggle {
    width: 32px;
    height: 32px;
    border-radius: 999px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    font-size: 0.9rem;
    line-height: 1;
    border-width: 1px;
    transition: background-color 0.15s ease-out, color 0.15s ease-out, border-color 0.15s ease-out, box-shadow 0.15s ease-out, transform 0.1s ease-out;
}

body.theme-light .btn-theme-toggle {
    background-color: #ffffff;
    color: #f59e0b; /* 太阳黄 */
    border-color: rgba(148, 163, 184, 0.6);
}

body.theme-dark .btn-theme-toggle {
    background-color: #020617;
    color: #e5e7eb; /* 月亮白 */
    border-color: rgba(148, 163, 184, 0.7);
}

.btn-theme-toggle:hover {
    transform: translateY(-1px);
    box-shadow: 0 0.25rem 0.5rem rgba(15, 23, 42, 0.18);
}

body.theme-light .btn-theme-toggle:hover {
    background-color: #fefce8;
    border-color: #fbbf24;
}

body.theme-dark .btn-theme-toggle:hover {
    background-color: #020617;
    border-color: #e5e7eb;
}

.card {
    border-radius: 0.8rem;
    box-shadow: 0 0.25rem 0.9rem rgba(15, 23, 42, 0.12);
}

.btn-primary {
    background: linear-gradient(135deg, #2563eb, #4f46e5);
    border: none;
}

.btn-primary:hover {
    background: linear-gradient(135deg, #1d4ed8, #4338ca);
}

.navbar-brand {
    font-weight: 600;
}

.sidebar {
    width: 220px;
}

.sidebar .list-group-item {
    border-radius: 0;
    font-size: 0.95rem;
}

/* 通用 SVG 图标缩放：确保粘贴自 Iconfont 等的 SVG 能自适应 18/24 像素容器，不会被裁剪成空白 */
.category-icon svg,
.item-icon svg,
.account-icon svg,
.tx-icon svg {
    width: 100%;
    height: 100%;
    display: block;
}

.sidebar .list-group-item:hover {
    background-color: rgba(148, 163, 184, 0.25);
}

/* 账户下拉中余额颜色：负为红，正为蓝，0 为黑
 * 使用通用类并加 !important，提升在不同浏览器下的生效概率。
 */
option.balance-neg {
    color: #dc3545 !important;
}

option.balance-pos {
    color: #0d6efd !important;
}

option.balance-zero {
    color: #212529 !important;
}

/* 账户管理表格行距更紧凑 */
.table-accounts tbody td {
    padding-top: 0.25rem;
    padding-bottom: 0.25rem;
}

/* 预算 / 账户 / 项目 / 分类等管理表格在不同主题下的文字与边框颜色优化 */
body.theme-light .table-accounts thead th,
body.theme-light .table-accounts tbody td {
    color: #111827;
    border-color: rgba(15, 23, 42, 0.08);
}

body.theme-dark .table-accounts thead,
body.theme-dark .table-accounts thead th {
    background-color: #020617;
}

body.theme-dark .table-accounts thead th,
body.theme-dark .table-accounts tbody td {
    color: #e5e7eb !important;
    border-color: rgba(148, 163, 184, 0.4);
}

/* 移动端账户管理页面整体更紧凑 */
@media (max-width: 576px) {
    .accounts-page .card-body {
        padding: 0.75rem;
    }
    .accounts-page h2.h5 {
        font-size: 0.95rem;
    }
    .accounts-page .small {
        font-size: 0.7rem;
    }
    .accounts-page .table-accounts {
        font-size: 0.75rem;
    }
    .accounts-page .table-accounts th,
    .accounts-page .table-accounts td {
        padding-top: 0.2rem;
        padding-bottom: 0.2rem;
        padding-left: 0.25rem;
        padding-right: 0.25rem;
    }
    .accounts-page .table-accounts .btn {
        padding: 0.1rem 0.35rem;
        font-size: 0.7rem;
    }
}

/* 凭证悬浮预览样式 */
.attachment-hover-preview {
    position: fixed;
    z-index: 1080;
    background-color: #ffffff;
    border: 1px solid rgba(0, 0, 0, 0.15);
    border-radius: 0.5rem;
    padding: 4px;
    box-shadow: 0 0.5rem 1rem rgba(15, 23, 42, 0.15);
    max-width: 260px;
    max-height: 260px;
}

.attachment-hover-preview img {
    max-width: 252px;
    max-height: 252px;
    display: block;
    object-fit: contain;
}

.attachment-thumb {
    max-width: 60px;
    max-height: 60px;
    border-radius: 0.25rem;
    cursor: zoom-in;
    object-fit: cover;
}

.attachment-modal-img {
    max-width: 100%;
    max-height: 90vh;
    width: auto;
    height: auto;
    object-fit: contain;
    margin: 0 auto;
}

/* 列表表格行高亮：方便快速对齐到编辑按钮
 * 采用明显的浅绿色高亮，效果类似常见后台的选中行背景。
 * 直接作用在所有 tbody 行，避免受 table 类名限制。 */
tbody tr:hover > * {
    background-color: #e8f5e9 !important; /* 浅绿，高亮明显 */
}

/* 记账表单上半部分更圆润的卡片和控件样式 */
.tx-form-card {
    border-radius: 1.25rem;
    background: linear-gradient(135deg, #f9fafb, #eef2ff);
    border: 1px solid rgba(148, 163, 184, 0.25);
}

.tx-form-grid {
    row-gap: 0.75rem;
}

.tx-form-row {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.tx-form-label {
    min-width: 72px;
    flex: 0 0 auto;
    color: #6b7280;
}

.tx-form-control-wrap {
    flex: 1 1 auto;
}

.tx-form-card .form-control,
.tx-form-card .form-select,
.tx-form-card textarea {
    border-radius: 0.75rem;
    padding-top: 0.25rem;
    padding-bottom: 0.25rem;
    font-size: 0.875rem;
}

/* 记账表单金额输入：略高一点，便于点击与输入 */
.tx-amount-input {
    padding-top: 0.45rem;
    padding-bottom: 0.45rem;
    font-size: 1rem;
}

/* 下拉框美化与分类颜色区分 */
.tx-select {
    border-radius: 0.5rem;
    background-color: #ffffff;
    background-image: linear-gradient(to bottom, #ffffff, #f9fafb);
    border-color: rgba(148, 163, 184, 0.6);
    font-size: 0.875rem;
}

.tx-select:focus {
    border-color: #60a5fa;
    box-shadow: 0 0 0 0.15rem rgba(59, 130, 246, 0.25);
}

.tx-category-select option[value=""] {
    color: #9ca3af;
}

.tx-category-select option[data-type="expense"] {
    color: #16a34a; /* 绿色：支出 */
}

.tx-category-select option[data-type="income"] {
    color: #dc2626; /* 红色：收入 */
}

@media (max-width: 576px) {
    .card {
        border-radius: 0.6rem;
    }
    .sidebar {
        width: 180px;
    }
}

/* 移动端侧边栏折叠样式 */
@media (max-width: 768px) {
    .sidebar {
        position: fixed;
        top: 0;
        bottom: 0;
        left: 0;
        z-index: 1040;
        transform: translateX(-100%);
        transition: transform 0.2s ease-out;
    }

    body.sidebar-open .sidebar {
        transform: translateX(0);
    }

    .sidebar-overlay {
        position: fixed;
        inset: 0;
        background: rgba(0, 0, 0, 0.4);
        z-index: 1030;
        opacity: 0;
        pointer-events: none;
        transition: opacity 0.2s ease-out;
    }

    body.sidebar-open .sidebar-overlay {
        opacity: 1;
        pointer-events: auto;
    }

    body.sidebar-open {
        overflow: hidden;
    }
}