/* 跨地区建筑服务增值税预缴管理助手 —— 基础样式（离线自带，不依赖任何外部 CDN） */
:root {
    --primary: #1a5fb4;
    --primary-dark: #144a8c;
    --primary-light: #e8f1fb;
    --danger: #c0392b;
    --danger-light: #fdecea;
    --warn: #b7791f;
    --warn-light: #fff8e6;
    --ok: #1e7e34;
    --ok-light: #e9f7ef;
    --gray: #5f6368;
    --gray-light: #f5f6f7;
    --border: #d9dee3;
    --text: #202124;
}
* { box-sizing: border-box; }
body {
    margin: 0;
    font-family: "Microsoft YaHei", "PingFang SC", SimHei, sans-serif;
    font-size: 14px;
    color: var(--text);
    background: #f0f2f5;
    line-height: 1.6;
}
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ===== 顶部导航 ===== */
.topbar {
    background: linear-gradient(180deg, #1f6ac6 0%, #1a5fb4 60%, #17549e 100%);
    color: #fff;
    box-shadow: 0 2px 8px rgba(16, 60, 120, .22);
}
.topbar-inner {
    max-width: 1440px; margin: 0 auto; padding: 4px 20px;
    display: flex; align-items: center; flex-wrap: wrap; row-gap: 2px;
    min-height: 56px;
}
.topbar h1 {
    flex: none; font-size: 16px; margin: 0; font-weight: 600; letter-spacing: .4px;
    white-space: nowrap;
}
.topbar h1 .t-short { display: none; }
.topbar-inner > .ver {
    flex: none; margin-left: 8px; padding: 0 6px; line-height: 17px;
    font-size: 11px; border: 1px solid rgba(255,255,255,.38); border-radius: 3px;
    opacity: .85; white-space: nowrap;
}

/* 主菜单：一律禁止折行。宽度不足时整条导航自动增高，绝不把中文挤成竖排 */
.nav {
    display: flex; align-items: center; flex-wrap: wrap; row-gap: 2px; gap: 2px;
    margin-left: 22px; flex: 1 1 auto; min-width: 0;
}
.nav > a, .nav-group-title {
    position: relative; display: inline-block;
    padding: 7px 12px; border-radius: 5px;
    font-size: 13.5px; line-height: 20px;
    color: rgba(255,255,255,.88); white-space: nowrap;
    transition: background .15s ease, color .15s ease;
}
.nav > a:hover, .nav-group:hover .nav-group-title {
    background: rgba(255,255,255,.16); color: #fff; text-decoration: none;
}
.nav > a.on, .nav-group-title.on {
    background: rgba(255,255,255,.24); color: #fff; font-weight: 600;
}
/* 当前页底部指示条 */
.nav > a.on::after, .nav-group-title.on::after {
    content: ''; position: absolute; left: 11px; right: 11px; bottom: 2px;
    height: 2px; border-radius: 2px; background: rgba(255,255,255,.92);
}

/* 系统管理下拉 */
.nav-group { position: relative; }
.nav-group-title { cursor: pointer; }
/* 悬浮桥接层：鼠标从标题滑到面板途中不会闪断 */
.nav-group::after {
    content: ''; position: absolute; left: 0; right: 0; top: 100%; height: 10px;
}
.nav-drop {
    display: none; position: absolute; top: calc(100% + 8px); left: 0; z-index: 60;
    min-width: 172px; padding: 6px;
    background: #fff; border: 1px solid #e2e8f0; border-radius: 8px;
    box-shadow: 0 12px 30px rgba(15, 45, 90, .22), 0 2px 6px rgba(15, 45, 90, .1);
}
.nav-group:hover .nav-drop { display: block; animation: navDropIn .14s ease-out; }
@keyframes navDropIn {
    from { opacity: 0; transform: translateY(-5px); }
    to   { opacity: 1; transform: translateY(0); }
}
.nav-drop a {
    display: block; padding: 8px 12px; border-radius: 5px;
    border-left: 3px solid transparent;
    font-size: 13.5px; line-height: 20px; color: var(--text); white-space: nowrap;
}
.nav-drop a:hover, .nav-drop a.on {
    background: var(--primary-light); color: var(--primary-dark);
    border-left-color: var(--primary); text-decoration: none;
}
.nav-drop a.on { font-weight: 600; }

/* 右上角用户区 */
.userbox {
    flex: none; display: flex; align-items: center; gap: 1px;
    margin-left: 10px; padding-left: 12px;
    border-left: 1px solid rgba(255,255,255,.22);
    font-size: 12.5px; color: rgba(255,255,255,.9); white-space: nowrap;
}
.userbox > span { padding: 4px 3px; }
.userbox .uname { font-weight: 600; color: #fff; }
.userbox .muted { font-size: 11.5px; color: rgba(255,255,255,.72); }
.userbox a {
    color: rgba(255,255,255,.9); padding: 5px 9px; border-radius: 5px;
    transition: background .15s ease, color .15s ease;
}
.userbox a:hover { background: rgba(255,255,255,.16); color: #fff; text-decoration: none; }

/* 窗口变窄时逐级收紧，尽量保持一行 */
@media (max-width: 1360px) {
    .topbar h1 { font-size: 15px; }
    .nav { margin-left: 14px; }
    .nav > a, .nav-group-title { padding: 7px 10px; font-size: 13px; }
}
@media (max-width: 1210px) {
    /* 窄屏用简称，避免标题吃掉菜单的宽度 */
    .topbar h1 .t-full { display: none; }
    .topbar h1 .t-short { display: inline; }
    .nav { margin-left: 12px; }
    .userbox { font-size: 12px; padding-left: 9px; }
    .userbox .muted { display: none; }
}
@media (max-width: 1080px) {
    .nav > a, .nav-group-title { padding: 6px 9px; font-size: 12.5px; }
    .topbar-inner > .ver { display: none; }
}

/* ===== 主体 ===== */
.container { max-width: 1440px; margin: 0 auto; padding: 18px 20px 40px; }
.page-title {
    font-size: 20px; font-weight: 600; margin: 0 0 14px; display: flex; align-items: center; gap: 10px;
}
.page-title .sub { font-size: 13px; color: var(--gray); font-weight: normal; }

.card { background: #fff; border: 1px solid var(--border); border-radius: 6px; padding: 16px 18px; margin-bottom: 16px; }
.card > h3 { margin: 0 0 12px; font-size: 15px; font-weight: 600; }
.card > h3 small { font-weight: normal; color: var(--gray); font-size: 12px; }

/* ===== 提示条 ===== */
.alert { padding: 10px 14px; border-radius: 4px; margin-bottom: 14px; border: 1px solid transparent; }
.alert.ok { background: var(--ok-light); border-color: #b6e0c4; color: #145523; }
.alert.err { background: var(--danger-light); border-color: #f3bdb5; color: #7b1c11; }
.alert.warn { background: var(--warn-light); border-color: #f0d59a; color: #6b4c11; }
.alert.info { background: var(--primary-light); border-color: #bfd8f3; color: #123a6b; }

/* ===== 表格 ===== */
table.grid { width: 100%; border-collapse: collapse; background: #fff; font-size: 13px; }
table.grid th, table.grid td { border: 1px solid var(--border); padding: 7px 9px; text-align: left; vertical-align: top; }
table.grid th { background: #eef3f9; font-weight: 600; color: #16365f; white-space: nowrap; }
table.grid tr:nth-child(even) td { background: #fafbfc; }
table.grid tr:hover td { background: #f2f7fd; }
table.grid td.num, table.grid th.num { text-align: right; white-space: nowrap; }
table.grid td.nowrap { white-space: nowrap; }
table.grid .empty { text-align: center; color: var(--gray); padding: 26px; }

/* ===== 标签 ===== */
.tag { display: inline-block; padding: 1px 8px; border-radius: 10px; font-size: 12px; line-height: 18px; white-space: nowrap; }
.tag.blue { background: var(--primary-light); color: var(--primary-dark); }
.tag.red { background: var(--danger-light); color: var(--danger); }
.tag.green { background: var(--ok-light); color: var(--ok); }
.tag.orange { background: var(--warn-light); color: var(--warn); }
.tag.gray { background: var(--gray-light); color: var(--gray); }

/* ===== 按钮与表单 ===== */
.btn {
    display: inline-block; padding: 6px 16px; border: 1px solid var(--primary); background: var(--primary);
    color: #fff; border-radius: 4px; cursor: pointer; font-size: 13px; line-height: 20px;
}
.btn:hover { background: var(--primary-dark); text-decoration: none; color: #fff; }
.btn.ghost { background: #fff; color: var(--primary); }
.btn.ghost:hover { background: var(--primary-light); }
.btn.danger { background: var(--danger); border-color: var(--danger); }
.btn.small { padding: 3px 10px; font-size: 12px; }
.btn[disabled] { opacity: .5; cursor: not-allowed; }

.toolbar { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-bottom: 12px; }
.toolbar input[type=text], .toolbar select, .toolbar input[type=date] {
    padding: 5px 8px; border: 1px solid var(--border); border-radius: 4px; font-size: 13px;
}
.toolbar label { font-size: 13px; color: var(--gray); }

.form-grid { display: grid; grid-template-columns: repeat(3, minmax(230px, 1fr)); gap: 12px 18px; }
.form-grid .col2 { grid-column: span 2; }
.form-grid .col3 { grid-column: span 3; }
.field label { display: block; font-size: 13px; color: var(--gray); margin-bottom: 4px; }
.field label .req { color: var(--danger); }
.field input[type=text], .field input[type=date], .field input[type=number], .field input[type=password], .field select, .field textarea {
    width: 100%; padding: 6px 9px; border: 1px solid var(--border); border-radius: 4px; font-size: 13px; font-family: inherit;
}
.field input:focus, .field select:focus, .field textarea:focus { outline: 2px solid #c6ddf7; border-color: var(--primary); }
.field .hint { font-size: 12px; color: #8a8f95; margin-top: 3px; }
.sysjudge { background: var(--primary-light); border: 1px dashed #9dc2ea; padding: 10px 12px; border-radius: 4px; font-size: 13px; color: #123a6b; }

/* ===== 统计卡片 ===== */
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 12px; margin-bottom: 16px; }
.stat { background: #fff; border: 1px solid var(--border); border-radius: 6px; padding: 12px 14px; }
.stat .n { font-size: 24px; font-weight: 600; color: var(--primary-dark); line-height: 1.2; }
.stat .n.red { color: var(--danger); }
.stat .n.green { color: var(--ok); }
.stat .t { font-size: 12px; color: var(--gray); }
.stat .extra { font-size: 12px; color: var(--gray); margin-top: 2px; }

/* ===== 分页 ===== */
.pager { margin-top: 12px; display: flex; gap: 6px; align-items: center; font-size: 13px; flex-wrap: wrap; }
.pager a, .pager span.cur {
    padding: 3px 10px; border: 1px solid var(--border); background: #fff; border-radius: 3px;
}
.pager span.cur { background: var(--primary); color: #fff; border-color: var(--primary); }
.pager .total { color: var(--gray); margin-left: 8px; }

/* ===== 其他 ===== */
.muted { color: var(--gray); font-size: 12px; }
.nowrap { white-space: nowrap; }
.right { text-align: right; }
details > summary { cursor: pointer; padding: 6px 0; font-weight: 600; color: var(--primary-dark); }
.timeline { list-style: none; margin: 0; padding: 0; }
.timeline li { border-left: 2px solid var(--border); padding: 8px 0 8px 14px; position: relative; }
.timeline li::before { content: ''; position: absolute; left: -5px; top: 15px; width: 8px; height: 8px; border-radius: 50%; background: var(--primary); }
.timeline .t { font-size: 12px; color: var(--gray); }
.login-box { max-width: 360px; margin: 10vh auto; background: #fff; padding: 30px 32px; border-radius: 8px; box-shadow: 0 4px 20px rgba(0,0,0,.08); }
.login-box h2 { margin: 0 0 6px; font-size: 20px; }
.login-box .field { margin-bottom: 14px; }
.login-box .btn { width: 100%; padding: 9px; font-size: 15px; }
table.kv td { padding: 6px 9px; border: 1px solid var(--border); font-size: 13px; }
table.kv td.k { background: #eef3f9; width: 160px; font-weight: 600; color: #16365f; }

/* ===== 通用文字强调色（配合 .tag / .stat / 表格金额列使用） ===== */
.stat .n.green { color: var(--ok); }
.stat .n.red { color: var(--danger); }
.stat .n.orange { color: var(--warn); }
.stat .n.gray { color: var(--gray); }
td.num.red, td.red { color: var(--danger); font-weight: 600; }
td.num.green, td.green { color: var(--ok); font-weight: 600; }
table.form-grid select[readonly] { background: var(--gray-light); color: var(--gray); }
form.inline { display: inline; }