/* ============================================================
   考生签到系统 · 云端管理后台样式
   ------------------------------------------------------------
   设计方向与客户端（ExamCheck-Web/static/css/style.css）保持一致：
   紫色渐变主色、淡紫底色、圆角卡片。现场的人在两套界面之间来回看，
   长得像同一套东西能少一次「这是哪个系统」的犹豫。

   这里只写云端后台用到的类名，一共几百行，够用就行 ——
   没有引入前端框架，也不需要构建步骤。
   ============================================================ */

:root {
    --primary: #6D3BEB;
    --primary-hover: #7C4DFF;
    --primary-press: #5A2CD0;
    --primary-deep: #3B1E7A;
    --primary-soft: #F1ECFF;
    --primary-line: #CFC3F5;

    --ink: #1F1B2E;
    --ink-soft: #4A4560;
    --ink-faint: #7A7590;
    --paper: #F5F3FB;
    --card: #FFFFFF;
    --line: #E7E3F5;
    --line-strong: #D5CEEC;

    --green: #1E8E5A;
    --green-soft: #E3F5EB;
    --amber: #B26A00;
    --amber-soft: #FDF1DB;
    --danger: #C0392B;
    --danger-soft: #FBEAE8;
    --muted: #8A85A0;

    --radius: 10px;
    --radius-lg: 16px;
    --shadow-card: 0 1px 2px rgba(52, 33, 110, .05), 0 10px 28px rgba(52, 33, 110, .10);
    --shadow-pop: 0 16px 48px rgba(52, 33, 110, .26);
    --font-display: "Microsoft YaHei", "PingFang SC", sans-serif;
    --font-body: "Microsoft YaHei", "PingFang SC", "Segoe UI", sans-serif;
    --mono: "Cascadia Mono", Consolas, "Courier New", monospace;
}

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

html { -webkit-text-size-adjust: 100%; }

body {
    font-family: var(--font-body);
    background-color: var(--paper);
    background-image:
        radial-gradient(1100px 460px at 10% -10%, rgba(124, 77, 255, .10), transparent 62%),
        radial-gradient(900px 420px at 96% -6%, rgba(109, 59, 235, .07), transparent 58%);
    background-attachment: fixed;
    color: var(--ink);
    font-size: 15px;
    line-height: 1.6;
    min-height: 100vh;
}

::selection { background: rgba(124, 77, 255, .22); }

a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--primary-hover); text-decoration: underline; }

code, .mono, .code, .log-view, .edit-id, code {
    font-family: var(--mono);
    font-size: .92em;
}

/* ---------------- 顶部栏 ---------------- */

.app-header {
    background:
        radial-gradient(760px 220px at 88% -50%, rgba(255, 255, 255, .26), transparent 62%),
        linear-gradient(120deg, #3B1E7A 0%, #5B2BD6 58%, #7C4DFF 100%);
    color: #F7F4FF;
    border-bottom: 3px solid #8B63FF;
    box-shadow: 0 6px 24px rgba(59, 30, 122, .26);
}

.app-header-inner {
    max-width: 1240px;
    margin: 0 auto;
    padding: 16px 22px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
}

.brand { display: flex; align-items: center; gap: 12px; }

.app-seal {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: #FFFFFF;
    padding: 4px;
    box-shadow: 0 4px 14px rgba(20, 8, 60, .28);
    flex-shrink: 0;
}

.brand-title {
    font-family: var(--font-display);
    font-size: 19px;
    font-weight: 700;
    letter-spacing: .5px;
    line-height: 1.25;
}

.brand-sub {
    color: rgba(247, 244, 255, .74);
    font-size: 12px;
    letter-spacing: .3px;
}

/* 导航：横向一排，当前页高亮 */
.nav { display: flex; gap: 4px; flex-wrap: wrap; }

.nav a {
    color: rgba(247, 244, 255, .86);
    padding: 7px 14px;
    border-radius: 999px;
    font-size: 14.5px;
    transition: background .15s, color .15s;
}

.nav a:hover {
    background: rgba(255, 255, 255, .14);
    color: #FFFFFF;
    text-decoration: none;
}

.nav a.on {
    background: #FFFFFF;
    color: var(--primary-deep);
    font-weight: 600;
    box-shadow: 0 3px 12px rgba(20, 8, 60, .22);
}

.header-right {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 13.5px;
}

.who { color: rgba(247, 244, 255, .92); }
.who em {
    font-style: normal;
    display: inline-block;
    margin-left: 6px;
    padding: 1px 8px;
    border-radius: 999px;
    background: rgba(255, 255, 255, .18);
    font-size: 12px;
}

form.inline { display: inline; }

/* ---------------- 页面容器 ---------------- */

.page {
    max-width: 1240px;
    margin: 0 auto;
    padding: 22px 22px 56px;
}

.page-head {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 16px;
}

.page-head h1 {
    font-family: var(--font-display);
    font-size: 22px;
    font-weight: 700;
    letter-spacing: .4px;
}

.page-head .sub, .sub {
    color: var(--ink-faint);
    font-size: 13px;
}

/* 标题右侧的工具区：搜索框和按钮必须排成一行，别各自换行 */
.page-head-actions {
    display: flex;
    gap: 8px;
    align-items: center;
    flex-wrap: wrap;
}

.page-head-actions form.inline {
    display: flex;
    gap: 8px;
    align-items: center;
}

.page-head-actions .search { max-width: 240px; }

.back-link {
    display: inline-block;
    margin-bottom: 10px;
    font-size: 13.5px;
}

.spacer { flex: 1; }

/* ---------------- 卡片 ---------------- */

.card {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    padding: 18px 20px;
    margin-bottom: 18px;
}

/* 统计卡是 .cards 栅格的孩子，自己不再留外边距 */
.cards .card, .stat-row .stat { margin-bottom: 0; }

.card-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 12px;
}

.card-head h2 {
    font-family: var(--font-display);
    font-size: 16.5px;
    font-weight: 700;
}

/* 卡片头里的工具条：搜索框 + 按钮排成一行 */
.card-head-actions {
    display: flex;
    gap: 8px;
    align-items: center;
    flex-wrap: wrap;
}

.cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
    gap: 14px;
    margin-bottom: 18px;
}

.two-col {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
    gap: 18px;
    align-items: start;
}

/* ---------------- 数字统计 ---------------- */

.stat-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 14px;
    margin-bottom: 18px;
}

.stat {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    padding: 16px 18px;
}

.stat-label { color: var(--ink-faint); font-size: 13px; }

.stat-num {
    font-family: var(--font-display);
    font-size: 30px;
    font-weight: 700;
    line-height: 1.2;
    color: var(--primary-deep);
    margin: 2px 0;
    white-space: nowrap;
}

.stat-num .unit { font-size: 16px; color: var(--ink-faint); font-weight: 400; }

.stat-sub { color: var(--ink-faint); font-size: 12.5px; }

/* ---------------- 按钮 ---------------- */

.btn {
    font-family: var(--font-body);
    font-size: 14px;
    line-height: 1;
    padding: 9px 16px;
    border-radius: var(--radius);
    border: 1px solid transparent;
    background: #EFEBFA;
    color: var(--ink-soft);
    cursor: pointer;
    transition: background .15s, border-color .15s, color .15s, box-shadow .15s;
    white-space: nowrap;
}

.btn:hover { background: #E6E0F8; }
.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: .55; cursor: not-allowed; }

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-hover) 100%);
    color: #FFFFFF;
    font-weight: 600;
    box-shadow: 0 4px 14px rgba(109, 59, 235, .30);
}
.btn-primary:hover { background: var(--primary-hover); color: #FFFFFF; }

.btn-ghost {
    background: #FFFFFF;
    border-color: var(--line-strong);
    color: var(--ink-soft);
}
.btn-ghost:hover { background: var(--primary-soft); border-color: var(--primary-line); color: var(--primary-deep); }

.btn-danger {
    background: var(--danger-soft);
    color: var(--danger);
    border-color: #F0C7C1;
}
.btn-danger:hover { background: #F6DAD6; color: #A5301F; }

.btn-sm { font-size: 13px; padding: 7px 12px; }
.btn-xs { font-size: 12px; padding: 5px 10px; }
.btn-block { display: block; width: 100%; padding: 11px 16px; font-size: 15px; }

/* ---------------- 表格 ---------------- */

.table-scroll { overflow-x: auto; }

table.grid {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}

table.grid th {
    text-align: left;
    font-weight: 600;
    color: var(--ink-soft);
    font-size: 13px;
    padding: 9px 10px;
    border-bottom: 2px solid var(--line);
    white-space: nowrap;
    background: #FBFAFE;
}

table.grid td {
    padding: 9px 10px;
    border-bottom: 1px solid var(--line);
    vertical-align: middle;
}

table.grid tbody tr:hover { background: #FBFAFE; }
table.grid tbody tr:last-child td { border-bottom: 0; }

.empty {
    text-align: center;
    color: var(--ink-faint);
    padding: 26px 10px !important;
    font-size: 13.5px;
}

/* 进度条（考试列表里的签到进度） */
.bar-cell { min-width: 150px; }

.bar {
    height: 8px;
    border-radius: 999px;
    background: #ECE8F8;
    overflow: hidden;
}

.bar > i, .bar span {
    display: block;
    height: 100%;
    background: linear-gradient(90deg, #7C4DFF, #6D3BEB);
    border-radius: 999px;
}

.num { font-variant-numeric: tabular-nums; text-align: right; white-space: nowrap; }

/* ---------------- 标签与小字 ---------------- */

.tag {
    display: inline-block;
    padding: 1px 9px;
    border-radius: 999px;
    font-size: 12px;
    line-height: 1.7;
    background: #EFEBFA;
    color: var(--ink-soft);
    white-space: nowrap;
}

.tag.ok { background: var(--green-soft); color: var(--green); }
.tag.bad { background: var(--danger-soft); color: var(--danger); }
.tag.warn { background: var(--amber-soft); color: var(--amber); }

.muted { color: var(--ink-faint); }
.small { font-size: 12.5px; }
.strong { font-weight: 600; color: var(--ink); }
.hint { color: var(--ink-faint); font-size: 12.5px; line-height: 1.5; }
.error { color: var(--danger); }

/* ---------------- 表单 ---------------- */

label { display: block; font-size: 13.5px; color: var(--ink-soft); }

label > span { display: block; margin-bottom: 4px; }

input[type=text], input[type=password], input[type=date], input[type=number],
input:not([type]), select, textarea, .search {
    font-family: var(--font-body);
    font-size: 14px;
    color: var(--ink);
    width: 100%;
    padding: 8px 11px;
    border: 1px solid var(--line-strong);
    border-radius: var(--radius);
    background: #FFFFFF;
    transition: border-color .15s, box-shadow .15s;
}

input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(124, 77, 255, .16);
}

.search { max-width: 320px; }

/* 签到进度卡里的搜索框独占一行，别和标题挤在一起 */
.card-head .search { flex: 0 1 300px; min-width: 180px; max-width: 380px; }

label.chk {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13.5px;
    color: var(--ink-soft);
    cursor: pointer;
}
label.chk input { width: auto; }

.row-form {
    display: flex;
    gap: 10px;
    align-items: flex-end;
    flex-wrap: wrap;
}
.row-form > * { flex: 1 1 180px; }

.field-label { font-size: 13px; color: var(--ink-faint); margin-bottom: 6px; display: block; }

/* ---------------- 弹窗 ---------------- */

dialog.dlg {
    border: 0;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-pop);
    padding: 0;
    width: min(560px, calc(100vw - 40px));
    max-height: calc(100vh - 60px);
    overflow: auto;
    color: var(--ink);
    /* dialog 默认是 absolute + 靠左上角；用 fixed + margin:auto 才真正居中 */
    position: fixed;
    inset: 0;
    margin: auto;
}

dialog.dlg::backdrop { background: rgba(31, 27, 46, .48); }

.dlg-form { padding: 22px 24px 18px; }
.dlg-form h2 { font-family: var(--font-display); font-size: 18px; margin-bottom: 4px; }
.dlg-form label { margin-bottom: 12px; }

.dlg-actions {
    display: flex;
    gap: 10px;
    align-items: center;
    justify-content: flex-end;
    padding-top: 8px;
    border-top: 1px solid var(--line);
    margin-top: 6px;
}
.dlg-actions .spacer { flex: 1; }

.import-report {
    margin: 10px 0;
    font-size: 13.5px;
    max-height: 220px;
    overflow: auto;
}
.import-report ul { margin-left: 18px; }

.exam-picker {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 6px 14px;
    max-height: 200px;
    overflow: auto;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 10px 12px;
    margin-bottom: 12px;
}

.code-box {
    background: var(--primary-soft);
    border: 1px dashed var(--primary-line);
    border-radius: var(--radius);
    padding: 14px 16px;
    text-align: center;
    color: var(--ink-soft);
}

.code-box .code, .code-row {
    font-family: var(--mono);
    font-size: 26px;
    font-weight: 700;
    letter-spacing: 4px;
    color: var(--primary-deep);
}

.code-row { display: flex; gap: 12px; justify-content: center; align-items: baseline; flex-wrap: wrap; }

.dlg-form select, .dlg-form input { margin-top: 2px; }

/* 设备编辑按钮 */
.dev-edit, .u-edit {
    background: none;
    border: 0;
    color: var(--primary);
    cursor: pointer;
    font-size: 13.5px;
    font-family: var(--font-body);
    padding: 0;
}
.dev-edit:hover, .u-edit:hover { text-decoration: underline; }

.edit-id { color: var(--ink-faint); font-size: 12.5px; }

/* 状态点：设备在线/离线 */
.ok { color: var(--green); }
.bad { color: var(--danger); }
.invalid { color: var(--danger); }

/* ---------------- 提示条 / 浮层 ---------------- */

.flashes { margin-bottom: 14px; }

.flash {
    padding: 10px 14px;
    border-radius: var(--radius);
    margin-bottom: 8px;
    font-size: 14px;
    border: 1px solid transparent;
}

.flash.error { background: var(--danger-soft); border-color: #F0C7C1; color: #9C2C1E; }
.flash.ok, .flash.success { background: var(--green-soft); border-color: #BFE6D2; color: #146B42; }
.flash.warn, .flash.warning { background: var(--amber-soft); border-color: #EFD9AE; color: #8A5200; }

.warn-note {
    background: var(--amber-soft);
    border: 1px solid #EFD9AE;
    color: #8A5200;
    border-radius: var(--radius);
    padding: 12px 16px;
    font-size: 13.5px;
    margin-bottom: 16px;
}

.toast {
    position: fixed;
    left: 50%;
    bottom: 32px;
    transform: translate(-50%, 16px);
    background: var(--ink);
    color: #FFFFFF;
    padding: 11px 22px;
    border-radius: 999px;
    font-size: 14px;
    box-shadow: var(--shadow-pop);
    opacity: 0;
    pointer-events: none;
    transition: opacity .2s, transform .2s;
    z-index: 99;
    max-width: min(560px, calc(100vw - 40px));
}

.toast.show { opacity: 1; transform: translate(-50%, 0); }
.toast.error { background: #A5301F; }

/* ---------------- 日志 ---------------- */

.log-view {
    background: #1F1B2E;
    color: #D9D4EE;
    border-radius: var(--radius);
    padding: 14px 16px;
    font-size: 12.5px;
    line-height: 1.65;
    max-height: 460px;
    overflow: auto;
    white-space: pre-wrap;
    word-break: break-all;
}

/* ---------------- 关于页 ---------------- */

.prose { font-size: 14px; color: var(--ink-soft); }
.prose p { margin-bottom: 8px; }
.prose ul { margin: 6px 0 10px 20px; }

.check-result {
    white-space: pre-wrap;
    font-family: var(--mono);
    font-size: 12.5px;
    line-height: 1.6;
    background: #FBFAFE;
}

/* ---------------- 登录页 ---------------- */

body.login-page .page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 24px;
}

.login-card {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-pop);
    padding: 34px 32px 26px;
    width: min(420px, 100%);
}

.login-head { text-align: center; margin-bottom: 22px; }

.login-seal {
    width: 62px;
    height: 62px;
    padding: 7px;
    border-radius: 14px;
    background: var(--primary-soft);
    margin-bottom: 8px;
}

.login-head h1 {
    font-family: var(--font-display);
    font-size: 22px;
    font-weight: 700;
    letter-spacing: .5px;
}

.login-head p { color: var(--ink-faint); font-size: 13.5px; }

.login-form label { margin-bottom: 14px; }

.login-note {
    margin-top: 18px;
    padding-top: 14px;
    border-top: 1px solid var(--line);
    color: var(--ink-faint);
    font-size: 12.5px;
    line-height: 1.7;
    text-align: center;
}

/* ---------------- 错误页 ---------------- */

.error-card { text-align: center; padding: 46px 28px; }

.error-code {
    font-family: var(--font-display);
    font-size: 52px;
    font-weight: 700;
    color: var(--primary-line);
    line-height: 1;
}

.error-card h1 { font-size: 20px; margin: 8px 0; }
.error-actions { margin-top: 18px; display: flex; gap: 10px; justify-content: center; }

/* ---------------- 窄屏 ---------------- */

@media (max-width: 900px) {
    /* 四张统计卡挤成两列时，30px 的数字会把“0/0”这种挤到第二行 */
    .stat-num { font-size: 25px; }
    .stat-num .unit { font-size: 14px; }
}

@media (max-width: 720px) {
    .app-header-inner { padding: 12px 14px; }
    .page { padding: 16px 14px 40px; }
    .brand-title { font-size: 17px; }
    .stat-num { font-size: 25px; }
    .two-col { grid-template-columns: 1fr; }
    .dlg-form { padding: 18px 16px 14px; }
    .login-card { padding: 26px 20px 20px; }
}