/* ExamVault admin design system. No build step: plain CSS, themeable via variables. */
/* Colour tokens live in tokens.css (loaded first). Legacy names below are aliases onto those tokens. */
@font-face { font-family: Figtree; font-weight: 400; font-display: swap; src: url(/assets/fonts/Figtree-Regular.ttf) format("truetype"); }
@font-face { font-family: Figtree; font-weight: 500; font-display: swap; src: url(/assets/fonts/Figtree-Medium.ttf) format("truetype"); }
@font-face { font-family: Figtree; font-weight: 600; font-display: swap; src: url(/assets/fonts/Figtree-SemiBold.ttf) format("truetype"); }
@font-face { font-family: Figtree; font-weight: 700; font-display: swap; src: url(/assets/fonts/Figtree-Bold.ttf) format("truetype"); }
:root {
  --surface-2: var(--surface-alt); --border-strong: var(--input-border); --faint: var(--muted);
  --ok: var(--success); --ok-bg: var(--success-soft); --warn: var(--warning); --warn-bg: var(--warning-soft);
  --err: var(--error); --err-bg: var(--error-soft); --info: var(--accent-ink); --info-bg: var(--accent-soft);
  --radius: var(--r-panel); --radius-sm: var(--r-control); --shadow: var(--e1); --shadow-lg: var(--e2);
  --sidebar: 252px; --on-accent: #fff;
}
* { box-sizing: border-box; }
html, body { margin: 0; }
body { font: 14px/1.5 var(--font); font-feature-settings: 'tnum' 0; background: var(--bg); color: var(--text); -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
h1, h2, h3 { margin: 0; line-height: 1.25; }
[x-cloak] { display: none !important; }
svg.i { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; flex: none; }

/* shell */
.shell { display: grid; grid-template-columns: var(--sidebar) 1fr; min-height: 100vh; }
.sidebar { background: var(--brand-ink); color: #D6DEEE; padding: 18px 12px; position: sticky; top: 0; height: 100vh; overflow-y: auto; display: flex; flex-direction: column; }
.sidebar .logo { display: flex; align-items: center; gap: 10px; padding: 4px 10px 18px; color: var(--on-brand); font-weight: 700; font-size: 16px; }
.sidebar .logo .mark { width: 30px; height: 30px; border-radius: 9px; background: var(--accent); display: grid; place-items: center; color: #fff; }
.nav-group { font-size: 11px; letter-spacing: .08em; text-transform: uppercase; color: #8FA0C0; padding: 16px 12px 6px; }
.nav a { display: flex; align-items: center; gap: 10px; padding: 8px 12px; border-radius: 9px; color: #D6DEEE; margin-bottom: 2px; }
.nav a:hover { background: rgba(255,255,255,.08); color: #fff; }
.nav a.active { background: rgba(255,255,255,.14); color: #fff; font-weight: 600; }
.nav a .count { margin-left: auto; font-size: 11px; background: var(--accent); color: #fff; border-radius: 99px; padding: 0 7px; }
.main { min-width: 0; display: flex; flex-direction: column; }
.topbar { display: flex; align-items: center; gap: 12px; padding: 12px 28px; background: var(--surface); border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 20; }
.topbar .grow { flex: 1; }
.content { padding: 24px 28px 48px; max-width: 1280px; width: 100%; margin: 0 auto; }
.btn.menu-btn { display: none; }
@media (max-width: 920px) {
  .shell { grid-template-columns: 1fr; }
  .sidebar { position: fixed; left: 0; top: 0; z-index: 50; width: 270px; transform: translateX(-100%); transition: transform .2s; }
  .sidebar.open { transform: none; box-shadow: var(--shadow-lg); }
  .btn.menu-btn { display: inline-flex; }
  .content, .topbar { padding-left: 16px; padding-right: 16px; }
  .scrim { position: fixed; inset: 0; background: rgba(0,0,0,.4); z-index: 40; }
}

/* page header */
.page-head { display: flex; align-items: flex-start; gap: 16px; margin-bottom: 20px; flex-wrap: wrap; }
.page-head h1 { font-size: 22px; letter-spacing: -.01em; }
.page-head .sub { color: var(--muted); margin-top: 2px; }
.page-head .actions { margin-left: auto; display: flex; gap: 8px; flex-wrap: wrap; }
.crumbs { color: var(--muted); font-size: 12px; margin-bottom: 6px; }

/* controls */
.btn { display: inline-flex; align-items: center; gap: 8px; border: 1px solid var(--border-strong); background: var(--surface); color: var(--text); padding: 8px 14px; border-radius: var(--radius-sm); font: inherit; font-weight: 600; cursor: pointer; line-height: 1.2; }
.btn:hover { background: var(--surface-2); }
.btn.primary { background: var(--brand-ink); border-color: var(--brand-ink); color: var(--on-brand); }
.btn.primary:hover { filter: brightness(.94); }
.btn.danger { color: var(--err); border-color: color-mix(in srgb, var(--err) 35%, var(--border)); }
.btn.danger.solid { background: var(--err); color: #fff; border-color: var(--err); }
.btn.sm { padding: 5px 10px; font-size: 12.5px; }
.btn.ghost { border-color: transparent; background: transparent; }
.btn[disabled] { opacity: .5; cursor: not-allowed; }
.icon-btn { width: 34px; height: 34px; padding: 0; justify-content: center; }
input[type=text], input[type=email], input[type=password], input[type=number], input[type=date], input[type=datetime-local], input[type=search], input[type=url], select, textarea {
  width: 100%; padding: 9px 12px; border: 1px solid var(--border-strong); border-radius: var(--radius-sm); background: var(--surface); color: var(--text); font: inherit; }
textarea { min-height: 90px; resize: vertical; }
input:focus, select:focus, textarea:focus { outline: 2px solid color-mix(in srgb, var(--accent) 45%, transparent); border-color: var(--accent); }
label.lbl { display: block; font-weight: 600; margin-bottom: 5px; }
.help { color: var(--muted); font-size: 12px; margin-top: 4px; }
.err-text { color: var(--err); font-size: 12.5px; margin-top: 4px; }
.switch { position: relative; width: 40px; height: 22px; display: inline-block; }
.switch input { opacity: 0; width: 0; height: 0; }
.switch span { position: absolute; inset: 0; background: var(--border-strong); border-radius: 99px; transition: .15s; }
.switch span::before { content: ""; position: absolute; width: 16px; height: 16px; left: 3px; top: 3px; background: #fff; border-radius: 50%; transition: .15s; }
.switch input:checked + span { background: var(--accent); }
.switch input:checked + span::before { transform: translateX(18px); }

/* cards, stats, tables */
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); }
.card-h { padding: 14px 18px; border-bottom: 1px solid var(--border); display: flex; align-items: center; gap: 10px; font-weight: 700; }
.card-b { padding: 18px; }
.grid { display: grid; gap: 16px; }
.g4 { grid-template-columns: repeat(4, 1fr); } .g3 { grid-template-columns: repeat(3, 1fr); } .g2 { grid-template-columns: repeat(2, 1fr); } .g21 { grid-template-columns: 2fr 1fr; }
@media (max-width: 1100px) { .g4 { grid-template-columns: repeat(2, 1fr); } .g21 { grid-template-columns: 1fr; } }
@media (max-width: 640px) { .g4, .g3, .g2 { grid-template-columns: 1fr; } }
.stat { padding: 16px 18px; }
.stat .k { color: var(--muted); font-size: 12.5px; display: flex; align-items: center; gap: 8px; }
.stat .v { font-size: 26px; font-weight: 700; letter-spacing: -.02em; margin-top: 4px; }
.stat .d { color: var(--muted); font-size: 12px; margin-top: 2px; }
.stat .ico { width: 30px; height: 30px; border-radius: 9px; display: grid; place-items: center; background: color-mix(in srgb, var(--accent) 14%, transparent); color: var(--accent); }
.table-wrap { overflow-x: auto; }
table.t { width: 100%; border-collapse: collapse; }
.t th { text-align: left; font-size: 12px; text-transform: uppercase; letter-spacing: .05em; color: var(--muted); font-weight: 600; padding: 10px 16px; background: var(--surface-2); border-bottom: 1px solid var(--border); white-space: nowrap; }
.t td { padding: 12px 16px; border-bottom: 1px solid var(--border); vertical-align: middle; }
.t tr:last-child td { border-bottom: 0; }
.t tbody tr:hover td { background: color-mix(in srgb, var(--surface-2) 60%, transparent); }
.t td { white-space: normal; } .t td .sub-cell { white-space: nowrap; }
.t td:has(> .sub-cell:last-child) { min-width: 96px; }
.t td.num, .t th.num { text-align: right; font-variant-numeric: tabular-nums; }
.t .main-cell { font-weight: 600; } .t .sub-cell { color: var(--muted); font-size: 12.5px; }
.badge { display: inline-flex; align-items: center; gap: 5px; padding: 2px 9px; border-radius: 99px; font-size: 12px; font-weight: 600; background: var(--surface-2); color: var(--muted); }
.badge.ok { background: var(--ok-bg); color: var(--ok); } .badge.warn { background: var(--warn-bg); color: var(--warn); }
.badge.err { background: var(--err-bg); color: var(--err); } .badge.info { background: var(--info-bg); color: var(--info); }
.badge::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: currentColor; opacity: .8; }
.toolbar { display: flex; gap: 10px; padding: 14px 16px; border-bottom: 1px solid var(--border); flex-wrap: wrap; align-items: center; }
.toolbar .search { flex: 1; min-width: 200px; position: relative; }
.toolbar .search input { padding-left: 34px; }
.toolbar .search svg { position: absolute; left: 10px; top: 50%; transform: translateY(-50%); color: var(--faint); }
.toolbar select { width: auto; min-width: 130px; }
.pager { display: flex; align-items: center; gap: 8px; padding: 12px 16px; border-top: 1px solid var(--border); color: var(--muted); }
.pager .grow { flex: 1; }
.empty { text-align: center; padding: 56px 20px; color: var(--muted); }
.empty .ring { width: 56px; height: 56px; border-radius: 50%; background: var(--surface-2); display: grid; place-items: center; margin: 0 auto 12px; color: var(--faint); }
.empty h3 { color: var(--text); margin-bottom: 4px; }

/* forms */
.form-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px 20px; }
.form-grid .full { grid-column: 1 / -1; }
@media (max-width: 720px) { .form-grid { grid-template-columns: 1fr; } }
.section-t { font-weight: 700; margin: 4px 0 12px; }
.dropzone { border: 1.5px dashed var(--border-strong); border-radius: var(--radius-sm); padding: 14px; text-align: center; color: var(--muted); background: var(--surface-2); }
.dropzone.has { border-style: solid; color: var(--text); }

/* menus, modal, toast */
.dropdown { position: relative; display: inline-block; }
.menu { position: absolute; right: 0; top: calc(100% + 6px); min-width: 190px; background: var(--surface); border: 1px solid var(--border); border-radius: 10px; box-shadow: var(--shadow-lg); padding: 6px; z-index: 30; }
.menu a, .menu button { display: flex; width: 100%; align-items: center; gap: 9px; padding: 8px 10px; border-radius: 7px; border: 0; background: none; color: var(--text); font: inherit; text-align: left; cursor: pointer; }
.menu a:hover, .menu button:hover { background: var(--surface-2); }
.menu .danger { color: var(--err); }
.modal-back { position: fixed; inset: 0; background: rgba(10,15,30,.5); z-index: 60; display: grid; place-items: center; padding: 16px; }
.modal { background: var(--surface); border-radius: 14px; width: 100%; max-width: 440px; box-shadow: var(--shadow-lg); padding: 22px; }
.modal h3 { margin-bottom: 6px; } .modal p { color: var(--muted); margin: 0 0 18px; }
.modal .row { display: flex; gap: 8px; justify-content: flex-end; }
.toasts { position: fixed; right: 18px; bottom: 18px; z-index: 80; display: grid; gap: 8px; }
.toast { background: var(--text); color: var(--bg); padding: 11px 16px; border-radius: 10px; box-shadow: var(--shadow-lg); display: flex; gap: 10px; align-items: center; max-width: 380px; }
.toast.err { background: var(--err); color: #fff; }
.alert { padding: 11px 14px; border-radius: var(--radius-sm); margin-bottom: 16px; background: var(--info-bg); color: var(--info); }
.alert.err { background: var(--err-bg); color: var(--err); } .alert.ok { background: var(--ok-bg); color: var(--ok); } .alert.warn { background: var(--warn-bg); color: var(--warn); }

/* charts (pure SVG/CSS) */
.bars { display: flex; align-items: flex-end; gap: 3px; height: 150px; padding-top: 8px; }
.bars .b { flex: 1; background: color-mix(in srgb, var(--accent) 75%, transparent); border-radius: 4px 4px 0 0; min-height: 2px; position: relative; }
.bars .b.alt { background: color-mix(in srgb, var(--brand) 60%, transparent); }
.bars .b:hover { filter: brightness(1.15); }
.legend { display: flex; gap: 14px; color: var(--muted); font-size: 12px; margin-top: 8px; }
.legend i { display: inline-block; width: 10px; height: 10px; border-radius: 3px; margin-right: 6px; }
.rowbar { height: 8px; border-radius: 99px; background: var(--surface-2); overflow: hidden; }
.rowbar > span { display: block; height: 100%; background: var(--accent); border-radius: 99px; }

/* login */
.auth { min-height: 100vh; display: grid; grid-template-columns: 1.1fr 1fr; }
.auth .art { background: linear-gradient(160deg, var(--brand), color-mix(in srgb, var(--brand) 60%, var(--accent))); color: #fff; padding: 56px; display: flex; flex-direction: column; justify-content: center; }
.auth .art h2 { font-size: 34px; letter-spacing: -.02em; max-width: 14ch; }
.auth .art p { opacity: .8; max-width: 38ch; margin-top: 12px; }
.auth .box { display: grid; place-items: center; padding: 32px; }
.auth form { width: 100%; max-width: 360px; display: grid; gap: 14px; }
@media (max-width: 820px) { .auth { grid-template-columns: 1fr; } .auth .art { display: none; } }
.kbd { font: 11px ui-monospace, monospace; border: 1px solid var(--border-strong); border-bottom-width: 2px; border-radius: 5px; padding: 0 5px; color: var(--muted); }

/* top navigation progress bar */
#nav-loader { position: fixed; top: 0; left: 0; right: 0; height: 3px; z-index: 100; opacity: 0; pointer-events: none; transition: opacity .2s; }
#nav-loader.on { opacity: 1; }
#nav-loader i { display: block; height: 100%; background: var(--accent); transform-origin: left; transform: scaleX(0); box-shadow: 0 0 10px var(--accent); border-radius: 0 3px 3px 0; }
#nav-loader.on i { animation: nav-load 9s cubic-bezier(.08,.7,.2,1) forwards; }
@keyframes nav-load { to { transform: scaleX(.93); } }
@media (prefers-reduced-motion: reduce) { #nav-loader.on i { animation: none; transform: scaleX(.6); } }

/* Workspace refresh: shared by dashboard, content lists, forms and settings. */
:root { --radius: 16px; --radius-sm: 10px; --bg: #F6F8FB; --text: #18283F; --muted: #65738A; --border: #E5EAF1; --shadow: 0 2px 6px #172B4D03; --sidebar: 244px; }
:root[data-theme="dark"] { --bg: #0D1420; --text: #E6EAF2; --muted: #A1AEC3; --border: #2A3549; --shadow: none; }
body { font-size: 14px; line-height: 1.55; }
a, button, input, select, textarea { -webkit-tap-highlight-color: transparent; }
a, button { transition: background-color .15s, border-color .15s, box-shadow .15s; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; }
.skip-link { position: fixed; top: -100px; left: 16px; z-index: 120; background: var(--surface); color: var(--text); padding: 12px 20px; border: 2px solid var(--accent); border-radius: 10px; }
.skip-link:focus { top: 12px; }
.sidebar { background: var(--surface); color: var(--text); padding: 24px 14px 14px; border-right: 1px solid var(--border); scrollbar-width: thin; }
.sidebar .logo { color: var(--text); padding: 0 10px 28px; font-size: 19px; letter-spacing: -.5px; align-items: flex-start; }
.sidebar .logo .mark { background: var(--brand); width: 36px; height: 38px; border-radius: 12px; }
.sidebar .logo small { display: block; font-size: 9px; font-weight: 600; letter-spacing: 1.6px; color: var(--muted); margin-top: 3px; }
.nav-group { color: var(--muted); font-size: 10px; font-weight: 700; padding: 22px 12px 8px; letter-spacing: 1.4px; }
.nav a { color: var(--muted); padding: 10px 12px; gap: 12px; margin-bottom: 3px; font-size: 13px; font-weight: 500; }
.nav a:hover { background: var(--surface-2); color: var(--text); }
.nav a.active { background: color-mix(in srgb, var(--accent) 10%, var(--surface)); color: var(--text); font-weight: 700; box-shadow: inset 3px 0 var(--accent); }
.nav a.active svg { color: var(--accent); }
.sidebar-footer { margin-top: auto; border-top: 1px solid var(--border); padding: 20px 8px 4px; display: flex; align-items: center; gap: 10px; }
.sidebar-footer > div { min-width: 0; }
.sidebar-footer strong { font-size: 12px; display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.sidebar-footer small { color: var(--muted); font-size: 11px; display: block; }
.avatar, .account-button { background: color-mix(in srgb, var(--accent) 12%, var(--surface)); color: var(--text); border-radius: 50%; font-weight: 700; text-transform: uppercase; width: 34px; height: 34px; display: grid; place-items: center; flex-shrink: 0; }
.sidebar-close { display: none; }
.topbar { min-height: 76px; padding: 14px 32px; gap: 18px; }
.workspace-crumb { display: flex; align-items: center; gap: 12px; font-size: 12px; white-space: nowrap; }
.workspace-crumb span { color: var(--muted); }
.workspace-crumb strong { font-weight: 600; }
.global-search { position: relative; margin-left: auto; width: min(320px, 35%); flex-shrink: 0; }
.global-search > svg { position: absolute; left: 12px; top: 12px; color: var(--muted); }
.global-search input { background: var(--bg); border-color: var(--border); padding: 10px 32px 10px 38px; font-size: 12px; }
.global-search .kbd { position: absolute; right: 12px; top: 12px; }
.topbar > .grow { display: none; }
.content { padding: 32px 32px 56px; max-width: 1500px; }
.page-head { margin-bottom: 26px; align-items: center; }
.page-head h1 { font-size: 28px; letter-spacing: -.9px; font-weight: 750; }
.page-head .sub { font-size: 13px; margin-top: 8px; line-height: 1.6; max-width: 66ch; }
.eyebrow { color: var(--muted); font-size: 10px; letter-spacing: 1.6px; font-weight: 700; margin-bottom: 10px; }
.period-control { display: inline-flex; padding: 4px; background: var(--surface); border: 1px solid var(--border); border-radius: 11px; margin-left: auto; flex-shrink: 0; }
.period-control a { padding: 7px 12px; border-radius: 7px; color: var(--muted); font-size: 12px; font-weight: 600; }
.period-control a:hover { color: var(--text); background: var(--surface-2); }
.period-control a.selected { background: var(--brand); color: #fff; box-shadow: 0 2px 4px #172B4D15; }
.quick-actions { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; margin-bottom: 26px; }
.quick-actions > a { background: var(--surface); border: 1px solid var(--border); border-radius: 14px; padding: 18px; display: flex; align-items: center; gap: 12px; }
.quick-actions > a:hover { border-color: var(--accent); box-shadow: 0 4px 16px #172B4D08; }
.action-icon { background: color-mix(in srgb, var(--accent) 10%, var(--surface)); color: var(--accent); width: 38px; height: 40px; border-radius: 12px; display: grid; place-items: center; flex-shrink: 0; }
.quick-actions strong { display: block; font-size: 13px; }
.quick-actions small { display: block; color: var(--muted); font-size: 11px; margin-top: 3px; }
.action-arrow { color: var(--muted); margin-left: auto; font-size: 18px; }
.metric-grid { margin-bottom: 24px; gap: 16px; }
.stat { padding: 20px 22px; }
.stat .k { justify-content: space-between; color: var(--muted); font-weight: 500; }
.stat .ico { background: var(--surface-2); color: var(--muted); width: 32px; height: 32px; border-radius: 10px; }
.stat .v { font-size: 32px; letter-spacing: -1px; line-height: 1.25; margin-top: 9px; font-variant-numeric: tabular-nums; overflow-wrap: anywhere; }
.stat .d { margin-top: 10px; font-size: 11px; }
.card-h { padding: 20px; border-bottom-color: var(--border); min-width: 0; justify-content: space-between; }
.card-h h2 { font-size: 14px; letter-spacing: -.2px; font-weight: 700; }
.card-h .help { font-size: 11px; font-weight: 400; }
.card-h .btn { flex-shrink: 0; }
.card-b { padding: 22px; }
.dashboard-section { margin-bottom: 24px; align-items: start; }
.dashboard-section > .card { min-width: 0; overflow: hidden; }
.activity-totals { display: flex; gap: 32px; margin-bottom: 26px; flex-wrap: wrap; }
.activity-totals > div { display: flex; align-items: center; gap: 8px; }
.activity-totals strong { font-size: 22px; letter-spacing: -.7px; }
.activity-totals > div > span:last-child { color: var(--muted); font-size: 12px; }
.chart-dot { width: 8px; height: 8px; border-radius: 50%; display: inline-block; }
.chart-dot.signup { background: var(--accent); } .chart-dot.download { background: var(--text); }
.activity-chart { display: flex; gap: 14px; }
.chart-axis { display: flex; flex-direction: column; justify-content: space-between; font-size: 10px; color: var(--muted); min-width: 24px; padding: 7px 0 12px; }
.activity-plot { width: calc(100% - 38px); height: 190px; overflow: visible; }
.chart-gridline { stroke: var(--border); stroke-dasharray: 4 4; }
.chart-line { fill: none; stroke-width: 2.5; stroke-linejoin: round; stroke-linecap: round; vector-effect: non-scaling-stroke; }
.chart-line.signups { stroke: var(--accent); }
.chart-line.downloads { stroke: var(--text); }
.chart-area { fill: var(--text); opacity: .035; }
.chart-dates { display: flex; justify-content: space-between; padding-left: 38px; color: var(--muted); font-size: 10px; }
.chart-empty { text-align: center; margin-top: 20px; }
.chart-data { margin-top: 16px; color: var(--muted); font-size: 11px; }
.chart-data summary { cursor: pointer; width: fit-content; }
.chart-data .table-wrap { max-height: 260px; margin-top: 12px; }
.attention-item { display: flex; gap: 12px; padding: 18px 20px; font-size: 12px; border-bottom: 1px solid var(--border); align-items: flex-start; }
.attention-item:hover { background: var(--surface-2); }
.attention-item small { color: var(--muted); display: block; font-size: 10px; margin-top: 7px; }
.attention-icon { background: var(--info-bg); color: var(--info); width: 32px; height: 32px; display: grid; place-items: center; border-radius: 10px; flex-shrink: 0; }
.attention-icon.err { background: var(--err-bg); color: var(--err); } .attention-icon.warn { background: var(--warn-bg); color: var(--warn); }
.card-footer-link { display: flex; justify-content: space-between; padding: 16px 20px; font-size: 12px; font-weight: 600; }
.card-footer-link:hover { background: var(--surface-2); }
.empty.compact { padding: 28px 20px; font-size: 12px; }
.empty.compact h3 { font-size: 13px; }
.empty.compact p { max-width: 30ch; margin: 8px auto 16px; }
.empty.compact .ring { background: color-mix(in srgb, var(--accent) 9%, var(--surface)); color: var(--accent); width: 44px; height: 44px; border-radius: 14px; }
.ranked-item { display: flex; gap: 12px; padding: 16px 20px; align-items: center; border-bottom: 1px solid var(--border); }
.ranked-item:last-child { border-bottom: 0; }
.ranked-item:hover { background: var(--surface-2); }
.rank { font-size: 11px; color: var(--muted); font-variant-numeric: tabular-nums; }
.ranked-content { flex: 1; min-width: 0; }
.ranked-content strong { font-size: 12px; font-weight: 600; display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; margin-bottom: 8px; }
.ranked-item .sub-cell { text-align: right; font-size: 12px; }
.ranked-item small { display: block; color: var(--muted); font-size: 9px; }
.rowbar { height: 4px; }
.learner-item { display: flex; align-items: center; gap: 10px; padding: 16px 20px; border-bottom: 1px solid var(--border); }
.learner-item:last-child { border-bottom: 0; }
.learner-item > div { min-width: 0; flex: 1; }
.learner-item strong, .learner-item small { display: block; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; font-size: 12px; }
.learner-item small { color: var(--muted); font-size: 10px; margin-top: 3px; }
.learner-item time { font-size: 9px; flex-shrink: 0; }
.btn { min-height: 40px; font-size: 12px; padding: 10px 14px; }
.btn.sm { min-height: 32px; font-size: 11px; }
.btn.primary { background: var(--brand); border-color: var(--brand); color: #fff; }
.icon-btn { width: 40px; min-height: 40px; }
.toolbar { padding: 18px; gap: 12px; }
.toolbar .search { min-width: min(240px, 100%); }
.toolbar select { max-width: 220px; }
.t th { font-size: 10px; padding: 14px 18px; background: var(--bg); }
.t td { padding: 16px 18px; font-size: 12px; }
.t .sub-cell { font-size: 11px; margin-top: 3px; }
.t input[type=checkbox] { width: 16px; height: 16px; accent-color: var(--accent); cursor: pointer; }
.badge { font-size: 10px; padding: 4px 9px; white-space: nowrap; }
.pager { padding: 16px 18px; font-size: 12px; flex-wrap: wrap; }
.form-grid { gap: 24px; }
.section-t { padding-top: 18px; border-top: 1px solid var(--border); font-size: 15px; }
.form-grid > .full:first-child .section-t { border-top: 0; padding-top: 0; }
.form-actions { position: sticky; bottom: 12px; background: var(--surface); box-shadow: 0 -6px 20px #172B4D05; border: 1px solid var(--border); border-radius: 0 0 16px 16px; justify-content: flex-end; z-index: 5; }
.dropzone { padding: 22px; }
.dropzone input { max-width: 100%; }
.auth .art { background: var(--brand); position: relative; overflow: hidden; }
.auth .art::after { content: ''; position: absolute; width: 380px; height: 380px; right: -180px; bottom: -140px; border: 1px solid #ffffff20; border-radius: 80px; transform: rotate(25deg); box-shadow: 0 0 0 50px #ffffff05, 0 0 0 100px #ffffff04; pointer-events: none; }
.auth .box { background: var(--surface); }
.auth form { gap: 22px; max-width: 380px; }
@media (min-width: 1600px) { .content { padding-left: 44px; padding-right: 44px; } }
@media (max-width: 1200px) { .quick-actions { gap: 10px; } .quick-actions > a { padding: 14px; } .quick-actions small { display: none; } .dashboard-section.g3 { grid-template-columns: 1fr; } .workspace-crumb { display: none; } .global-search { width: min(420px, 70%); margin-left: 0; } .topbar > .grow { display: block; } }
@media (max-width: 920px) { .sidebar { padding-top: 24px; } .sidebar-close { display: inline-flex; position: absolute; top: 18px; right: 10px; } .sidebar .logo { padding-right: 30px; font-size: 16px; } .topbar { min-height: 68px; gap: 10px; } .global-search { width: auto; flex: 1; } .topbar > .grow { display: none; } .content { padding: 24px 20px 40px; } }
@media (max-width: 640px) { .quick-actions { grid-template-columns: 1fr; gap: 8px; margin-bottom: 20px; } .quick-actions > a { padding: 12px 14px; } .quick-actions small { display: block; } .quick-actions .action-icon { width: 32px; height: 34px; } .overview-head { gap: 18px; } .period-control { margin-left: 0; } .page-head h1 { font-size: 26px; } .metric-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; } .stat { padding: 16px; } .stat .v { font-size: 24px; } .stat .k { font-size: 11px; gap: 4px; align-items: flex-start; } .stat .ico { width: 26px; height: 26px; } .stat .d { font-size: 10px; } .global-search .kbd { display: none; } .content { padding: 22px 16px 40px; } .topbar { padding-left: 12px; padding-right: 12px; } .toolbar select { max-width: 100%; flex: 1; } .toolbar .search { flex-basis: 100%; } .card-b { padding: 18px; } .activity-totals { gap: 20px; } .global-search input { min-width: 0; } }
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; animation: none !important; } }
.row-menu { position: fixed; max-height: min(270px, calc(100vh - 16px)); overflow-y: auto; z-index: 45; }
/* Keep daily tasks visible while less frequent sections stay one click away. */
.nav-section > summary { list-style: none; cursor: pointer; display: flex; align-items: center; justify-content: space-between; padding-top: 18px; }
.nav-section > summary::-webkit-details-marker { display: none; }
.nav-section > summary::after { content: ''; width: 5px; height: 5px; border-right: 1.5px solid currentColor; border-bottom: 1.5px solid currentColor; transform: rotate(-45deg); margin-right: 4px; }
.nav-section[open] > summary::after { transform: rotate(45deg); }
.stat { padding: 16px 20px; }
.stat .k { min-height: 26px; }
.stat .ico { width: 26px; height: 26px; border-radius: 8px; }
.stat .ico svg { width: 15px; height: 15px; }
.stat .v { margin-top: 4px; font-size: 30px; line-height: 1.15; }
.stat .d { margin-top: 6px; }

/* Accessible file selection and real multipart upload progress. */
.file-uploader { position: relative; border: 1.5px dashed var(--border-strong); border-radius: 14px; background: var(--bg); transition: border-color .15s, background .15s; min-width: 0; }
.file-uploader:hover, .file-uploader:focus-within, .file-uploader.is-dragging { border-color: var(--accent); background: color-mix(in srgb, var(--accent) 5%, var(--surface)); }
.file-uploader.is-dragging { box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent) 12%, transparent); }
.file-uploader.has-file { border-style: solid; }
.file-uploader.has-error { border-color: var(--err); }
.uploader-input { position: absolute; width: 1px; height: 1px; opacity: 0; overflow: hidden; }
.uploader-empty { display: flex; flex-direction: column; align-items: center; text-align: center; gap: 8px; padding: 24px 16px; }
.uploader-empty > strong { font-size: 13px; }
.uploader-or { font-size: 11px; color: var(--muted); }
.uploader-browse { cursor: pointer; background: var(--surface); }
.uploader-icon { display: grid; place-items: center; color: var(--accent); background: color-mix(in srgb, var(--accent) 10%, var(--surface)); width: 42px; height: 44px; border-radius: 13px; flex-shrink: 0; }
.uploader-icon svg { width: 21px; height: 21px; }
.uploader-selected { display: flex; align-items: center; gap: 12px; padding: 20px; }
.uploader-meta { min-width: 0; flex: 1; }
.uploader-meta strong { display: block; font-size: 12px; overflow-wrap: anywhere; }
.uploader-meta small { display: block; color: var(--muted); font-size: 11px; margin-top: 5px; }
.uploader-preview { width: 60px; height: 60px; object-fit: contain; border-radius: 10px; background: var(--surface); flex-shrink: 0; }
.uploader-existing { padding: 12px 16px; border-top: 1px solid var(--border); display: flex; align-items: flex-start; gap: 8px; font-size: 11px; color: var(--muted); overflow-wrap: anywhere; }
.uploader-existing svg { color: var(--ok); width: 15px; height: 15px; }
.uploader-existing small { display: block; margin-top: 3px; }
.uploader-error { padding: 0 16px 14px; }
.upload-status { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 16px 20px; margin-bottom: 18px; font-size: 13px; }
.upload-status p { margin: 4px 0; }
.upload-status progress { display: block; width: 100%; height: 8px; margin-top: 12px; accent-color: var(--accent); }

/* form: error summary + unsaved indicator */
.error-summary { outline: none; }
.error-summary ul { margin: 6px 0 0; padding-left: 18px; }
.error-summary a { text-decoration: underline; }
.unsaved { margin-right: auto; display: inline-flex; align-items: center; gap: 8px; color: var(--warn); font-weight: 600; font-size: 13px; }
.unsaved i { width: 8px; height: 8px; border-radius: 50%; background: var(--warn); display: inline-block; }

/* WYSIWYG note editor */
.md-editor { border-radius: var(--r-control); overflow: hidden; }
.md-editor .toastui-editor-defaultUI { border-color: var(--input-border); }

/* ---- Server health ---- */
.sh-meter { height: 6px; border-radius: 99px; background: var(--surface-alt); margin-top: 12px; overflow: hidden; }
.sh-meter > span { display: block; height: 100%; border-radius: 99px; background: var(--success); transition: width .4s ease; }
.sh-meter > span.warn { background: var(--warning); } .sh-meter > span.crit { background: var(--error-fill); }
.sh-chart { border: 1px solid var(--border); border-radius: 12px; padding: 14px; }
.sh-chart-h, .sh-chart-f { display: flex; justify-content: space-between; gap: 10px; font-size: 13px; }
.sh-chart-f { color: var(--muted); font-size: 12px; margin-top: 6px; }
.sh-chart svg { width: 100%; height: 90px; display: block; margin-top: 8px; }
.sh-err { display: grid; gap: 2px; padding: 8px 0; border-bottom: 1px solid var(--border); font-size: 12px; }
.sh-err span { color: var(--muted); } .sh-err code { white-space: pre-wrap; word-break: break-word; }
@media (max-width: 640px) { .sh-chart svg { height: 70px; } }