/* ===========================================================================
   ระบบติดตามข้อมูลนักศึกษา — stylesheet
   Colour tokens, spacing and radii are taken verbatim from the design file.
   Fallback colours are written before every color-mix() so older browsers
   (and the Chrome/Firefox versions still common on school desktops) get a
   usable, if flatter, rendering.
   ======================================================================== */

:root {
  --bg: #f6f5fb;
  --surface: #ffffff;
  --surface-2: #f0eef9;
  --text: #1a1830;
  --text-dim: #6b6880;
  --border: #e6e2f2;
  --primary: #7c3aed;
  --primary-2: #2563eb;
  --primary-soft: rgba(124, 58, 237, .12);
  --primary-soft-2: rgba(124, 58, 237, .08);
  --warn: #c98a00;
  --warn-soft: rgba(224, 160, 0, .18);
  --danger: #dc2626;
  --danger-soft: rgba(220, 38, 38, .12);
  --ok: #059669;
  --ok-soft: rgba(5, 150, 105, .14);
  --shadow-card: 0 30px 60px -30px rgba(80, 40, 160, .3);
}

html[data-theme="dark"] {
  --bg: #0f0e1a;
  --surface: #1a1830;
  --surface-2: #232140;
  --text: #f0eef8;
  --text-dim: #9b98b5;
  --border: #2d2a4a;
  --primary: #9d7bf0;
  --primary-2: #5b8def;
  --primary-soft: rgba(157, 123, 240, .18);
  --primary-soft-2: rgba(157, 123, 240, .10);
  --warn: #e0a000;
  --warn-soft: rgba(224, 160, 0, .22);
  --danger: #f87171;
  --danger-soft: rgba(248, 113, 113, .16);
  --ok: #34d399;
  --ok-soft: rgba(52, 211, 153, .16);
  --shadow-card: 0 30px 60px -30px rgba(0, 0, 0, .6);
}

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

/* IE11 and old Android browsers do not style the hidden attribute themselves,
   and app.js relies on it to keep JavaScript-only controls out of the page. */
[hidden] { display: none !important; }

body {
  font-family: 'IBM Plex Sans Thai', 'IBM Plex Sans', 'Noto Sans Thai',
               system-ui, -apple-system, 'Segoe UI', Tahoma, sans-serif;
  -webkit-font-smoothing: antialiased;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  transition: background .3s, color .3s;
}

a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--primary-2); }
input, select, textarea, button { font-family: inherit; }
::selection { background: var(--primary); color: #fff; }

@keyframes floatUp {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}
.scr { animation: floatUp .4s ease both; }

input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--primary) !important;
}

/* ------------------------------------------------------------- primitives */

.wrap { max-width: 1180px; margin: 0 auto; padding-left: 24px; padding-right: 24px; }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 24px;
}
.card-lg { border-radius: 22px; padding: 36px; }
.card-sm { border-radius: 16px; padding: 20px; }

.grad-text {
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: var(--primary);
}

.logo {
  width: 40px; height: 40px; border-radius: 11px;
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-weight: 700; font-size: 18px; flex-shrink: 0;
}
.logo-sm { width: 36px; height: 36px; border-radius: 10px; font-size: 16px; }
.logo-lg { width: 52px; height: 52px; border-radius: 14px; font-size: 24px; }

/* ----------------------------------------------------------------- button */

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 10px 18px; border-radius: 10px;
  border: 1px solid var(--border); background: var(--surface); color: var(--text);
  font-weight: 600; font-size: 14px; cursor: pointer; line-height: 1.2;
  transition: filter .15s, border-color .15s, background .15s;
}
.btn:hover { filter: brightness(.97); color: var(--text); }
.btn:active { transform: translateY(1px); }
.btn[disabled] { opacity: .55; cursor: not-allowed; }

.btn-primary {
  border: none; color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
}
.btn-primary:hover { filter: brightness(1.06); color: #fff; }

.btn-lg { padding: 14px 26px; border-radius: 12px; font-size: 15px; }
.btn-sm { padding: 8px 14px; border-radius: 9px; font-size: 13px; }
.btn-block { width: 100%; }
.btn-danger { border-color: var(--danger); color: var(--danger); }
.btn-danger:hover { background: var(--danger-soft); }

.icon-btn {
  width: 38px; height: 38px; border-radius: 10px;
  border: 1px solid var(--border); background: var(--surface); color: var(--text);
  cursor: pointer; font-size: 16px; line-height: 1;
  display: inline-flex; align-items: center; justify-content: center;
}

/* ------------------------------------------------------------------ forms */

.field { margin-bottom: 16px; }
.label {
  display: block; font-size: 13px; font-weight: 600;
  color: var(--text); margin-bottom: 6px;
}
.input {
  width: 100%; padding: 12px 14px; border-radius: 10px;
  border: 1px solid var(--border); background: var(--bg); color: var(--text);
  font-size: 15px;
}
.input-sm { padding: 9px 12px; font-size: 14px; }
select.input { appearance: none; -webkit-appearance: none; padding-right: 34px;
  background-image: linear-gradient(45deg, transparent 50%, currentColor 50%),
                    linear-gradient(135deg, currentColor 50%, transparent 50%);
  background-position: calc(100% - 18px) 50%, calc(100% - 13px) 50%;
  background-size: 5px 5px, 5px 5px; background-repeat: no-repeat; }
textarea.input { min-height: 80px; resize: vertical; }
.hint { font-size: 12px; color: var(--text-dim); margin-top: 6px; }
.field-error { font-size: 12px; color: var(--danger); margin-top: 6px; }
.input.has-error { border-color: var(--danger); }

/* Password field with a reveal toggle. The button is emitted with the hidden
   attribute and only shown by app.js, so a browser with JavaScript switched
   off never renders a control that cannot do anything. The label is always
   four Thai characters (แสดง / ซ่อน) so the field does not reflow on toggle. */
.input-reveal { position: relative; }
.input-reveal .input { padding-right: 82px; }
.reveal-btn {
  position: absolute; right: 6px; top: 50%; transform: translateY(-50%);
  padding: 8px 12px; border-radius: 8px;
  border: 1px solid var(--border); background: var(--surface); color: var(--text-dim);
  font-family: inherit; font-size: 12px; font-weight: 600; line-height: 1;
  cursor: pointer;
}
.reveal-btn:hover { color: var(--text); border-color: var(--primary); }
.reveal-btn:focus-visible { outline: 2px solid var(--primary); outline-offset: 1px; }

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.span-2 { grid-column: 1 / -1; }

/* ----------------------------------------------------------------- badges */

.badge {
  display: inline-block; padding: 5px 12px; border-radius: 999px;
  font-size: 12px; font-weight: 600; white-space: nowrap;
}
.badge-done { background: var(--primary-soft); color: var(--primary); }
.badge-wait { background: var(--surface-2); color: var(--text-dim); }
.badge-warn { background: var(--warn-soft); color: var(--warn); }
.badge-danger { background: var(--danger-soft); color: var(--danger); }
.badge-ok { background: var(--ok-soft); color: var(--ok); }

/* --------------------------------------------------------------- messages */

.alert {
  padding: 14px 18px; border-radius: 12px; font-size: 14px; font-weight: 500;
  margin-bottom: 18px; border: 1px solid var(--border); background: var(--surface-2);
  color: var(--text);
}
.alert-success { background: var(--ok-soft); border-color: transparent; color: var(--ok); }
.alert-error { background: var(--danger-soft); border-color: transparent; color: var(--danger); }
.alert-warn { background: var(--warn-soft); border-color: transparent; color: var(--warn); }
.alert-info { background: var(--primary-soft); border-color: transparent; color: var(--primary); }

/* ---------------------------------------------------------------- landing */

.site-header {
  position: sticky; top: 0; z-index: 20;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}
@supports (backdrop-filter: blur(12px)) or (-webkit-backdrop-filter: blur(12px)) {
  .site-header {
    -webkit-backdrop-filter: blur(12px);
    backdrop-filter: blur(12px);
    background: color-mix(in srgb, var(--bg) 80%, transparent);
  }
}
.site-header-inner {
  max-width: 1180px; margin: 0 auto; padding: 16px 24px;
  display: flex; align-items: center; gap: 16px;
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand-name { font-weight: 700; font-size: 15px; color: var(--text); line-height: 1.1; }
.brand-sub { font-size: 11px; color: var(--text-dim); letter-spacing: .5px; }
.site-nav { margin-left: 24px; display: flex; gap: 24px; font-size: 14px; }
.site-nav a { color: var(--text-dim); }
.site-nav a:hover { color: var(--primary); }
.header-actions { margin-left: auto; display: flex; align-items: center; gap: 10px; }

.hero {
  max-width: 1180px; margin: 0 auto; padding: 72px 24px 40px;
  display: grid; grid-template-columns: 1.1fr .9fr; gap: 48px; align-items: center;
}
.pill {
  display: inline-flex; align-items: center; gap: 8px; padding: 6px 14px;
  border-radius: 999px; background: var(--surface-2); color: var(--primary);
  font-size: 13px; font-weight: 600; margin-bottom: 20px;
}
.pill .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--primary); }
.hero h1 {
  font-size: 46px; line-height: 1.15; font-weight: 700;
  color: var(--text); letter-spacing: -.5px;
}
.hero p {
  font-size: 17px; line-height: 1.6; color: var(--text-dim);
  margin: 20px 0 32px; max-width: 520px;
}
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-note { margin-top: 24px; font-size: 13px; color: var(--text-dim); }

.hero-card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 24px; padding: 28px; box-shadow: var(--shadow-card);
}
.hero-card-title { font-size: 13px; color: var(--text-dim); margin-bottom: 16px; font-weight: 600; }
.minichart { display: flex; align-items: flex-end; gap: 12px; height: 170px; padding: 0 4px; }
.minichart .col { flex: 1; display: flex; flex-direction: column; align-items: center; gap: 8px; height: 100%; justify-content: flex-end; }
.minichart .bar { width: 100%; border-radius: 8px 8px 0 0; background: linear-gradient(180deg, var(--primary), var(--primary-2)); }
.minichart .bar.alt { background: var(--primary); opacity: .7; }
.minichart .bar.flat { background: var(--surface-2); border: 1px solid var(--border); }
.minichart .lbl { font-size: 11px; color: var(--text-dim); }
.hero-card-foot {
  margin-top: 20px; padding-top: 16px; border-top: 1px solid var(--border);
  display: flex; justify-content: space-between; align-items: center;
}

.stat-value { font-size: 32px; font-weight: 700; color: var(--text); letter-spacing: -.5px; }
.stat-label { font-size: 13px; color: var(--text-dim); margin-top: 6px; }

.feature-icon {
  width: 46px; height: 46px; border-radius: 12px; background: var(--surface-2);
  display: flex; align-items: center; justify-content: center;
  font-size: 22px; margin-bottom: 16px;
}
.feature-title { font-size: 17px; font-weight: 600; color: var(--text); margin-bottom: 8px; }
.feature-desc { font-size: 14px; line-height: 1.6; color: var(--text-dim); }

.section-title { font-size: 28px; font-weight: 700; color: var(--text); margin-bottom: 8px; }
.section-sub { color: var(--text-dim); margin-bottom: 28px; }

.site-footer { border-top: 1px solid var(--border); background: var(--surface); margin-top: 40px; }
.site-footer-inner {
  max-width: 1180px; margin: 0 auto; padding: 28px 24px;
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px;
  color: var(--text-dim); font-size: 13px;
}

/* ------------------------------------------------------------ auth screens */

.auth { min-height: 100vh; display: grid; grid-template-columns: 1fr 1fr; }
.auth-side {
  background: linear-gradient(150deg, var(--primary), var(--primary-2));
  padding: 56px; display: flex; flex-direction: column;
  justify-content: space-between; color: #fff;
}
.auth-side h2 { font-size: 34px; font-weight: 700; line-height: 1.2; margin-bottom: 12px; }
.auth-side p { font-size: 16px; opacity: .9; max-width: 400px; line-height: 1.6; }
.auth-side a { color: #fff; text-decoration: underline; }
.auth-back {
  align-self: flex-start; background: rgba(255, 255, 255, .15); border: none;
  color: #fff; padding: 9px 16px; border-radius: 9px; cursor: pointer;
  font-weight: 600; font-size: 14px;
}
.auth-mark {
  width: 52px; height: 52px; border-radius: 14px; background: rgba(255, 255, 255, .2);
  display: flex; align-items: center; justify-content: center;
  font-size: 24px; font-weight: 700; margin-bottom: 20px;
}
.auth-main {
  display: flex; align-items: center; justify-content: center;
  padding: 40px; background: var(--bg);
}
.auth-box { width: 100%; max-width: 380px; }

/* Sign in asks which kind of account the visitor holds before it shows any
   fields, because the two kinds take entirely different credentials. This
   replaced a pair of tabs that opened on one of them, which had staff typing
   their email into the field asking for a student code. */

.auth-title { font-size: 22px; font-weight: 700; color: var(--text); margin-bottom: 8px; }
.auth-kind {
  display: inline-block; margin-left: 6px; padding: 3px 10px; border-radius: 999px;
  background: var(--primary-soft); color: var(--primary);
  font-size: 13px; font-weight: 600; vertical-align: middle;
}
.auth-lead { font-size: 14px; color: var(--text-dim); line-height: 1.6; margin-bottom: 22px; }
.auth-change {
  display: inline-block; font-size: 13px; font-weight: 600;
  color: var(--text-dim); margin-bottom: 14px;
}
.auth-change:hover { color: var(--primary); }

/* Page tabs: server-rendered links, one per section of a long screen. */
.tabs {
  display: flex; gap: 4px; flex-wrap: wrap;
  border-bottom: 1px solid var(--border); margin-bottom: 22px;
}
.tab {
  position: relative; padding: 10px 16px; margin-bottom: -1px;
  font-size: 14px; font-weight: 600; color: var(--text-dim); text-decoration: none;
  border-bottom: 2px solid transparent; border-radius: 8px 8px 0 0;
}
.tab:hover { color: var(--text); background: var(--surface-2); }
.tab.on { color: var(--primary); border-bottom-color: var(--primary); }
.tab-dot {
  display: inline-block; width: 7px; height: 7px; margin-left: 6px; vertical-align: middle;
  border-radius: 50%; background: var(--warn, #d97706);
}
@media (max-width: 640px) {
  .tabs { flex-wrap: nowrap; overflow-x: auto; }
  .tab { white-space: nowrap; }
}

/* Named "kind" rather than "choice": the survey form further down already owns
   .choice for its radio cards, and two components sharing a class silently
   leak each other's padding, gaps and hover colours. */
.kind-list { display: grid; gap: 12px; margin-bottom: 4px; }
.kind {
  display: flex; align-items: center; gap: 14px; padding: 18px;
  border: 1px solid var(--border); border-radius: 14px;
  background: var(--surface); color: var(--text); text-align: left;
  transition: border-color .15s, background .15s;
}
.kind:hover { border-color: var(--primary); background: var(--primary-soft-2); color: var(--text); }
.kind:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }
.kind-icon { flex: none; font-size: 26px; line-height: 1; }
.kind-title { display: block; font-size: 16px; font-weight: 700; margin-bottom: 3px; }
.kind-desc { display: block; font-size: 12.5px; color: var(--text-dim); line-height: 1.5; }
.kind-go { flex: none; margin-left: auto; color: var(--text-dim); font-size: 18px; }
.kind:hover .kind-go { color: var(--primary); }

/* ------------------------------------------------------------- app shell */

.shell { min-height: 100vh; background: var(--bg); display: grid; grid-template-columns: 248px 1fr; }

/* Grid items default to min-width:auto, so anything wider than its track —
   a long menu row, a wide table — stretches the whole layout and makes the
   page scroll sideways. Content that is too wide has to scroll inside its
   own box instead. */
.shell > * { min-width: 0; }
.sidebar {
  background: var(--surface); border-right: 1px solid var(--border);
  padding: 22px 16px; display: flex; flex-direction: column; gap: 4px;
}
.sidebar-head { display: flex; align-items: center; gap: 10px; padding: 6px 8px 20px; }
.sidebar-org { font-weight: 700; font-size: 13px; color: var(--text); }
.sidebar-role { font-size: 11px; color: var(--text-dim); }
.nav-item {
  display: block; padding: 11px 12px; border-radius: 10px;
  font-size: 14px; font-weight: 500; color: var(--text-dim); cursor: pointer;
}
.nav-item:hover { background: var(--surface-2); color: var(--text); }
.nav-item.on { background: var(--surface-2); color: var(--primary); font-weight: 600; }
.sidebar-foot { margin-top: auto; display: flex; flex-direction: column; gap: 8px; padding-top: 16px; }
.sidebar-foot .btn { background: var(--bg); justify-content: flex-start; }

.main { padding: 32px 36px; overflow: auto; }
.page-title { font-size: 26px; font-weight: 700; color: var(--text); }
.page-sub { color: var(--text-dim); font-size: 14px; margin: 6px 0 24px; }

/* ------------------------------------------------------------------ table */

.table { background: var(--surface); border: 1px solid var(--border); border-radius: 16px; overflow: hidden; }
.table-head, .table-row {
  display: grid; align-items: center; gap: 12px;
  padding: 14px 20px; border-bottom: 1px solid var(--border);
}
.table-head {
  font-size: 12px; font-weight: 700; color: var(--text-dim);
  text-transform: uppercase; letter-spacing: .5px;
}
.table-row { padding: 16px 20px; }
.table-row:last-child { border-bottom: none; }
.table-row:hover { background: var(--surface-2); }
.cell-title { font-weight: 600; color: var(--text); font-size: 14px; }
.cell-sub { font-size: 12px; color: var(--text-dim); }
.cell-dim { font-size: 13px; color: var(--text-dim); }
.table-empty { padding: 48px 20px; text-align: center; color: var(--text-dim); font-size: 14px; }
.table-toolbar {
  display: flex; justify-content: space-between; align-items: center;
  gap: 12px; padding: 18px 20px; border-bottom: 1px solid var(--border); flex-wrap: wrap;
}

/* ------------------------------------------------------------- dashboard */

.kpi-label { font-size: 13px; color: var(--text-dim); }
.kpi-value { font-size: 30px; font-weight: 700; color: var(--text); margin: 6px 0 2px; }
.kpi-sub { font-size: 12px; color: var(--primary); font-weight: 600; }

.bar-row { margin-bottom: 16px; }
.bar-row:last-child { margin-bottom: 0; }
.bar-head { display: flex; justify-content: space-between; font-size: 13px; margin-bottom: 6px; }
.bar-track { height: 10px; border-radius: 6px; background: var(--surface-2); overflow: hidden; }
.bar-fill { height: 100%; border-radius: 6px; background: linear-gradient(90deg, var(--primary), var(--primary-2)); }

.donut {
  width: 170px; height: 170px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
}
.donut-hole {
  width: 104px; height: 104px; border-radius: 50%; background: var(--surface);
  display: flex; flex-direction: column; align-items: center; justify-content: center;
}
.donut-pct { font-size: 24px; font-weight: 700; color: var(--text); }
.donut-cap { font-size: 11px; color: var(--text-dim); }
.legend { margin-top: 20px; width: 100%; display: flex; flex-direction: column; gap: 8px; }
.legend-row { display: flex; align-items: center; gap: 8px; font-size: 13px; }
.legend-chip { width: 10px; height: 10px; border-radius: 3px; flex-shrink: 0; }

/* ------------------------------------------------------- alumni self form */

.profile-card {
  background: var(--surface); border: 1px solid var(--border); border-radius: 16px;
  padding: 22px; display: flex; align-items: center; gap: 16px; margin-bottom: 20px;
}
.avatar {
  width: 56px; height: 56px; border-radius: 50%; background: var(--surface-2);
  display: flex; align-items: center; justify-content: center;
  font-size: 22px; color: var(--primary); font-weight: 700; flex-shrink: 0;
}
.panel {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 16px; padding: 26px; margin-bottom: 20px;
}
.panel h3 { font-size: 16px; font-weight: 700; color: var(--text); margin-bottom: 18px; }
.panel-sub { font-size: 13px; color: var(--text-dim); margin: -12px 0 16px; }

.choice-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.choice {
  border: 1px solid var(--border); background: var(--bg); border-radius: 12px;
  padding: 14px; display: flex; align-items: center; gap: 10px;
  cursor: pointer; color: var(--text); text-align: left;
  font-size: 14px; font-weight: 600;
}
/* Visually hidden, but still focusable and exposed to assistive technology —
   the card itself is the visible control. */
.choice input {
  position: absolute; width: 1px; height: 1px; margin: -1px; padding: 0;
  border: 0; overflow: hidden; white-space: nowrap;
  clip: rect(0 0 0 0); clip-path: inset(50%);
}
.choice .emoji { font-size: 18px; }
.choice.on { border: 2px solid var(--primary); background: var(--primary-soft-2); padding: 13px; }
.choice:hover { border-color: var(--primary); }
.choice:focus-within { border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-soft); }

.conditional {
  margin-top: 20px; padding-top: 20px; border-top: 1px solid var(--border);
}
.form-actions { display: flex; gap: 12px; justify-content: flex-end; margin-top: 4px; }

/* ------------------------------------------------------------- migrations */

.mig-state { display: inline-flex; align-items: center; gap: 6px; }
.sql-log {
  background: var(--surface-2); border-radius: 10px; padding: 14px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 12px; line-height: 1.7; color: var(--text); overflow-x: auto;
  white-space: pre-wrap; word-break: break-word; max-height: 340px; overflow-y: auto;
}
.kv { display: grid; grid-template-columns: auto 1fr; gap: 8px 18px; font-size: 13px; }
.kv dt { color: var(--text-dim); }
.kv dd { color: var(--text); font-weight: 600; }

/* --------------------------------------------------------- impersonation */

/*
 * Deliberately loud and always on screen: acting as someone else is easy to
 * forget, and every change made meanwhile is recorded against them.
 */
.impersonation-bar {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; flex-wrap: wrap;
  padding: 10px 20px;
  background: linear-gradient(135deg, var(--warn), #b06e00);
  color: #fff; font-size: 13px; font-weight: 600;
  box-shadow: 0 2px 12px -4px rgba(0, 0, 0, .5);
}
.impersonation-bar b { font-weight: 700; }
.impersonation-bar .btn {
  background: rgba(255, 255, 255, .18);
  border-color: rgba(255, 255, 255, .45);
  color: #fff;
}
.impersonation-bar .btn:hover { background: rgba(255, 255, 255, .3); color: #fff; }

/* ------------------------------------------------- long-running operations */

/*
 * Shown while a slow form is being processed — transferring users from RMS
 * takes tens of seconds, and without this the page simply sits there.
 */
.busy-overlay {
  position: fixed; inset: 0; z-index: 200;
  display: flex; align-items: center; justify-content: center; padding: 24px;
  background: rgba(15, 14, 26, .55);
  -webkit-backdrop-filter: blur(3px);
  backdrop-filter: blur(3px);
}
.busy-box {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 20px; padding: 34px 38px; max-width: 420px; width: 100%;
  text-align: center; box-shadow: 0 30px 60px -20px rgba(0, 0, 0, .45);
}
.busy-title { font-size: 17px; font-weight: 700; color: var(--text); margin-bottom: 8px; }
.busy-note { font-size: 13px; color: var(--text-dim); line-height: 1.7; }
.busy-elapsed {
  font-size: 13px; color: var(--primary); font-weight: 600; margin-top: 14px;
  font-variant-numeric: tabular-nums;
}
.busy-steps {
  margin-top: 16px; padding-top: 14px; border-top: 1px solid var(--border);
  font-size: 12px; color: var(--text-dim); line-height: 1.9; text-align: left;
}

.spinner {
  width: 46px; height: 46px; margin: 0 auto 18px;
  border-radius: 50%;
  border: 4px solid var(--surface-2);
  border-top-color: var(--primary);
  border-right-color: var(--primary-2);
  animation: spin .9s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* A moving bar under the box: no percentage is known, so it sweeps. */
.busy-track {
  height: 4px; border-radius: 3px; background: var(--surface-2);
  overflow: hidden; margin-top: 18px;
}
.busy-track span {
  display: block; height: 100%; width: 40%; border-radius: 3px;
  background: linear-gradient(90deg, var(--primary), var(--primary-2));
  animation: sweep 1.4s ease-in-out infinite;
}
@keyframes sweep {
  0%   { transform: translateX(-100%); }
  100% { transform: translateX(250%); }
}

/* Motion is decoration here; the text still says what is happening. */
@media (prefers-reduced-motion: reduce) {
  .spinner {
    animation: none;
    border-top-color: var(--primary);
    border-right-color: var(--primary);
    opacity: .75;
  }
  .busy-track span { animation: none; width: 100%; opacity: .6; }
}


/* ------------------------------------------------------ confirm dialog */

/*
 * Replaces window.confirm(). Sits above the busy overlay, because confirming
 * is what starts the work the busy overlay then covers the screen for.
 */
.modal-overlay {
  position: fixed; inset: 0; z-index: 300;
  display: flex; align-items: center; justify-content: center; padding: 24px;
  background: rgba(15, 14, 26, .55);
  -webkit-backdrop-filter: blur(3px);
  backdrop-filter: blur(3px);
  animation: modal-fade .16s ease both;
}
.modal-box {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 20px; padding: 30px 32px 26px; max-width: 460px; width: 100%;
  box-shadow: 0 30px 60px -20px rgba(0, 0, 0, .45);
  animation: modal-rise .2s cubic-bezier(.2, .8, .3, 1) both;
}
.modal-icon {
  width: 52px; height: 52px; border-radius: 15px;
  display: flex; align-items: center; justify-content: center;
  font-size: 24px; margin-bottom: 16px;
  background: var(--surface-2); color: var(--primary);
}
.modal-box.is-danger .modal-icon { background: var(--danger-soft); color: var(--danger); }
.modal-title { font-size: 18px; font-weight: 700; color: var(--text); margin-bottom: 8px; }
.modal-text {
  font-size: 14px; line-height: 1.75; color: var(--text-dim);
  /* Confirmation text is written as a sentence; keep the author's breaks. */
  white-space: pre-line; overflow-wrap: break-word;
}
.modal-actions {
  display: flex; gap: 10px; justify-content: flex-end;
  margin-top: 24px; flex-wrap: wrap;
}
.modal-actions .btn { min-width: 108px; }

@keyframes modal-fade { from { opacity: 0; } to { opacity: 1; } }
@keyframes modal-rise {
  from { opacity: 0; transform: translateY(12px) scale(.98); }
  to   { opacity: 1; transform: none; }
}

@media (max-width: 480px) {
  .modal-box { padding: 24px 22px 20px; }
  .modal-actions { flex-direction: column-reverse; }
  .modal-actions .btn { width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  .modal-overlay, .modal-box { animation: none; }
}


/* ---------------------------------------------------- chunked transfer */

.progress-track {
  height: 12px; border-radius: 7px; background: var(--surface-2);
  overflow: hidden; border: 1px solid var(--border);
}
.progress-fill {
  height: 100%; border-radius: 7px; width: 0;
  background: linear-gradient(90deg, var(--primary), var(--primary-2));
  transition: width .25s ease;
}
@media (prefers-reduced-motion: reduce) { .progress-fill { transition: none; } }

/* ------------------------------------------------------------ pagination */

.pager { display: flex; gap: 6px; align-items: center; justify-content: center; padding: 18px; }
.pager a, .pager span {
  padding: 7px 12px; border-radius: 8px; font-size: 13px; font-weight: 600;
  border: 1px solid var(--border); color: var(--text-dim);
}
.pager .on { background: var(--primary); border-color: var(--primary); color: #fff; }

/* ------------------------------------------------------------ responsive */

@media (max-width: 1024px) {
  .hero { grid-template-columns: 1fr; gap: 32px; padding-top: 48px; }
  .hero h1 { font-size: 36px; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}

/*
 * Narrowing the window shrinks the sidebar rather than dropping it above the
 * page. There is still room for a side column well below 1024px, and turning
 * it into a stacked block pushed the actual content a screenful down.
 */
@media (max-width: 1180px) and (min-width: 761px) {
  .shell { grid-template-columns: 200px 1fr; }
  .sidebar { padding: 18px 10px; }
  .sidebar-head { padding: 4px 6px 16px; gap: 8px; }
  .sidebar-org { font-size: 12px; }
  .nav-item { padding: 10px; font-size: 13px; }
  .main { padding: 26px 24px; }
}

@media (max-width: 980px) and (min-width: 761px) {
  .shell { grid-template-columns: 168px 1fr; }
  .sidebar { padding: 16px 8px; }
  /* The institution name would wrap to four lines at this width; the logo
     and the role are enough to say whose workspace this is. */
  .sidebar-org { display: none; }
  .nav-item { padding: 9px 10px; font-size: 12.5px; }
  .main { padding: 24px 20px; }
}

/*
 * Phones: a single compact strip across the top. The links scroll sideways
 * inside it, so the bar stays one row tall however many menu entries a role
 * has, instead of growing downwards.
 */
@media (max-width: 760px) {
  .shell { grid-template-columns: 1fr; }
  .sidebar {
    position: sticky; top: 0; z-index: 40;
    flex-direction: row; align-items: center; gap: 10px;
    padding: 8px 12px;
    border-right: none; border-bottom: 1px solid var(--border);
    background: var(--surface);
  }
  .sidebar-head { padding: 0; width: auto; flex-shrink: 0; }
  .sidebar-head > div:last-child { display: none; }

  .sidebar nav {
    flex: 1; min-width: 0;
    display: flex; gap: 6px;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: thin;
  }
  .sidebar nav .nav-item {
    white-space: nowrap;
    padding: 8px 12px; font-size: 13px;
  }

  .sidebar-foot {
    margin: 0; padding-top: 0; flex-shrink: 0;
    flex-direction: row; align-items: center; gap: 6px;
  }
  .sidebar-foot .btn { background: var(--surface); justify-content: center; padding: 8px 10px; }
  .sidebar-foot .btn-block { width: auto; }

  .main { padding: 20px 16px; }
}

@media (max-width: 760px) {
  .auth { grid-template-columns: 1fr; }
  .auth-side { padding: 32px 24px; gap: 24px; }
  .auth-side h2 { font-size: 26px; }
  .grid-2, .grid-3, .grid-4, .choice-grid { grid-template-columns: 1fr; }
  .site-nav { display: none; }
  .hero h1 { font-size: 30px; }
  .section-title { font-size: 22px; }
  .table-head { display: none; }
  .table-row { grid-template-columns: 1fr !important; gap: 8px; }
  .table-row .cell-actions { justify-self: start !important; }
  .form-actions { flex-direction: column-reverse; }
  .form-actions .btn { width: 100%; }
  .site-header-inner { flex-wrap: wrap; }
}

@media print {
  .sidebar, .site-header, .form-actions, .no-print { display: none !important; }
  .shell { grid-template-columns: 1fr; }
  body { background: #fff; }
}