/* ==========================================================================
   REC Platform — Flat UI Design System (Revamp 2026)
   Palette: existing REC blue/white identity only (see src/utils/theme.ts)
   Style rules: FLAT — no box-shadows, 1px borders, 8px radius max,
   navy sidebar shell, white content, uppercase micro-labels.
   ========================================================================== */

:root {
  /* REC palette — KEEP (Task 28 §2.1) */
  --navy: #0F1A4A;
  --navy-light: #2A3A6A;
  --navy-dark: #080F30;
  --blue: #0088D9;          /* bright blue — action accents, links */
  --blue-soft: #6B7FE3;     /* light blue — secondary accents */
  --success: #4ECDC4;       /* teal/mint */
  --warning: #FFAB00;
  --error: #EF4444;

  /* Grounds & text */
  --bg: #FFFFFF;
  --bg-paper: #F8F9FA;
  --bg-tint: #F0F4FF;       /* faint blue tint for selected/hover */
  --border: #E2E8F0;
  --border-strong: #CBD5E1;
  --text: #0F1A4A;
  --text-2: #4A5568;
  --text-3: #8A94A6;

  --radius: 8px;
  --radius-sm: 6px;
  --sidebar-w: 236px;
  --topbar-h: 56px;
  --font: 'Roboto', -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html, body { height: 100%; }
body {
  font-family: var(--font);
  font-size: 14px;
  color: var(--text);
  background: var(--bg-paper);
  -webkit-font-smoothing: antialiased;
}
a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: underline; }
button { font-family: inherit; cursor: pointer; }
svg { display: block; flex: none; }

/* ==========================================================================
   App shell: fixed navy sidebar + slim white top bar + content
   ========================================================================== */
.shell { display: flex; min-height: 100vh; }

.sidebar {
  width: var(--sidebar-w);
  flex: none;
  background: var(--navy);
  color: #fff;
  display: flex;
  flex-direction: column;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
}
.side-brand {
  display: flex; align-items: center; gap: 10px;
  padding: 16px 20px;
  border-bottom: 1px solid rgba(255,255,255,.12);
}
.side-brand .logo {
  width: 32px; height: 32px; border-radius: var(--radius-sm);
  background: var(--blue);
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 12px; color: #fff; letter-spacing: .5px;
}
.side-brand .name { font-size: 15px; font-weight: 600; letter-spacing: .2px; }
.side-brand .name small { display: block; font-size: 10.5px; font-weight: 400; color: rgba(255,255,255,.55); letter-spacing: .6px; text-transform: uppercase; }

.side-nav { flex: 1; padding: 12px 0 16px; }
.side-group { margin-top: 16px; }
.side-group:first-child { margin-top: 4px; }
.side-group-label {
  padding: 0 20px 6px;
  font-size: 10.5px; font-weight: 600; letter-spacing: 1.2px; text-transform: uppercase;
  color: rgba(255,255,255,.45);
}
.side-link {
  display: flex; align-items: center; gap: 12px;
  padding: 9px 20px;
  color: rgba(255,255,255,.78);
  font-size: 13.5px;
  border-left: 3px solid transparent;
}
.side-link svg { width: 17px; height: 17px; stroke: currentColor; }
.side-link:hover { background: rgba(255,255,255,.06); color: #fff; text-decoration: none; }
.side-link.active {
  background: rgba(0,136,217,.18);
  border-left-color: var(--blue);
  color: #fff; font-weight: 500;
}
.side-link .count {
  margin-left: auto;
  font-size: 11px; font-weight: 600;
  background: rgba(255,255,255,.14);
  border-radius: 10px; padding: 1px 8px;
}
.side-user {
  border-top: 1px solid rgba(255,255,255,.12);
  padding: 14px 20px;
  display: flex; align-items: center; gap: 10px;
}
.side-user .avatar { background: var(--blue-soft); }
.side-user .who { line-height: 1.25; min-width: 0; }
.side-user .who b { display: block; font-size: 13px; font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.side-user .who span { font-size: 11px; color: rgba(255,255,255,.55); }

.main { flex: 1; min-width: 0; display: flex; flex-direction: column; }

.topbar {
  height: var(--topbar-h);
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center; gap: 16px;
  padding: 0 28px;
  position: sticky; top: 0; z-index: 20;
}
.crumbs { display: flex; align-items: center; gap: 8px; font-size: 13px; color: var(--text-3); }
.crumbs a { color: var(--text-3); }
.crumbs .sep { color: var(--border-strong); }
.crumbs .here { color: var(--text); font-weight: 500; }
.topbar-right { margin-left: auto; display: flex; align-items: center; gap: 14px; }
.org-pill {
  display: flex; align-items: center; gap: 8px;
  border: 1px solid var(--border); border-radius: 20px;
  padding: 5px 14px 5px 8px; font-size: 12.5px; color: var(--text-2); background: var(--bg);
}
.org-pill .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--success); }
.avatar {
  width: 32px; height: 32px; border-radius: 50%; flex: none;
  background: var(--navy-light); color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 12px; font-weight: 600; letter-spacing: .5px;
}

.content { padding: 28px; max-width: 1280px; width: 100%; margin: 0 auto; }

/* ==========================================================================
   Page header
   ========================================================================== */
.page-head { display: flex; align-items: flex-start; gap: 16px; margin-bottom: 24px; }
.page-head h1 { font-size: 22px; font-weight: 700; letter-spacing: -.2px; }
.page-head .sub { margin-top: 4px; font-size: 13.5px; color: var(--text-2); }
.page-head .actions { margin-left: auto; display: flex; gap: 10px; align-items: center; }

/* ==========================================================================
   Buttons — flat, from theme tokens only
   ========================================================================== */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  border-radius: var(--radius-sm);
  font-size: 13px; font-weight: 500;
  padding: 8px 16px;
  border: 1px solid transparent;
  transition: background .12s;
  white-space: nowrap;
}
.btn svg { width: 15px; height: 15px; stroke: currentColor; }
.btn--primary { background: var(--navy); color: #fff; }
.btn--primary:hover { background: var(--navy-light); }
.btn--accent { background: var(--blue); color: #fff; }
.btn--accent:hover { background: #0077BE; }
.btn--ghost { background: var(--bg); color: var(--text); border-color: var(--border-strong); }
.btn--ghost:hover { background: var(--bg-paper); }
.btn--danger { background: #fff; color: var(--error); border-color: var(--error); }
.btn--danger:hover { background: #FEF2F2; }
.btn--danger-solid { background: var(--error); color: #fff; }
.btn--text { background: none; color: var(--blue); padding: 8px 8px; }
.btn--sm { padding: 5px 12px; font-size: 12.5px; }
.btn[disabled] { opacity: .45; cursor: not-allowed; }

.icon-btn {
  width: 30px; height: 30px; border-radius: var(--radius-sm);
  border: none; background: transparent; color: var(--text-3);
  display: inline-flex; align-items: center; justify-content: center;
}
.icon-btn svg { width: 16px; height: 16px; stroke: currentColor; }
.icon-btn:hover { background: var(--bg-tint); color: var(--blue); }
.icon-btn--danger:hover { background: #FEF2F2; color: var(--error); }

/* ==========================================================================
   KPI tiles — icon, label, value, context line
   ========================================================================== */
.kpi-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 14px; margin-bottom: 24px; }
.kpi {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 18px;
  display: flex; flex-direction: column; gap: 8px;
}
.kpi-top { display: flex; align-items: center; justify-content: space-between; }
.kpi .label { font-size: 11px; font-weight: 600; letter-spacing: .9px; text-transform: uppercase; color: var(--text-3); }
.kpi .ic {
  width: 30px; height: 30px; border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  background: var(--bg-tint); color: var(--blue);
}
.kpi .ic svg { width: 16px; height: 16px; stroke: currentColor; }
.kpi .ic--success { background: #E9FAF8; color: #1FA79D; }
.kpi .ic--warning { background: #FFF6E0; color: #B87A00; }
.kpi .ic--error   { background: #FEF2F2; color: var(--error); }
.kpi .ic--navy    { background: var(--navy); color: #fff; }
.kpi .value { font-size: 26px; font-weight: 700; line-height: 1; letter-spacing: -.5px; }
.kpi .context { font-size: 12px; color: var(--text-2); }
.kpi .context b { color: var(--text); }

/* ==========================================================================
   Cards / panels
   ========================================================================== */
.card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 20px;
  overflow: hidden;
}
.card-head {
  display: flex; align-items: center; gap: 12px;
  padding: 14px 20px;
  border-bottom: 1px solid var(--border);
}
.card-head h2 { font-size: 15px; font-weight: 600; }
.card-head .hint { font-size: 12.5px; color: var(--text-3); }
.card-head .right { margin-left: auto; display: flex; gap: 8px; align-items: center; }
.card-body { padding: 20px; }

/* ==========================================================================
   Filter bar — search + selects + clear (one pattern everywhere)
   ========================================================================== */
.filter-bar {
  display: flex; flex-wrap: wrap; gap: 10px; align-items: center;
  padding: 12px 20px;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}
.search {
  display: flex; align-items: center; gap: 8px;
  border: 1px solid var(--border-strong); border-radius: var(--radius-sm);
  background: var(--bg);
  padding: 0 12px; height: 34px; min-width: 240px; flex: 1; max-width: 340px;
}
.search svg { width: 15px; height: 15px; stroke: var(--text-3); }
.search input { border: none; outline: none; font-size: 13px; width: 100%; color: var(--text); background: transparent; }
.search input::placeholder { color: var(--text-3); }
select.select, .select {
  height: 34px; border: 1px solid var(--border-strong); border-radius: var(--radius-sm);
  background: var(--bg); color: var(--text); font-size: 13px; padding: 0 30px 0 10px;
  font-family: inherit;
  appearance: none;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'><path d='M1 1l4 4 4-4' stroke='%234A5568' fill='none' stroke-width='1.5' stroke-linecap='round'/></svg>");
  background-repeat: no-repeat; background-position: right 10px center;
}
.filter-clear { font-size: 12.5px; color: var(--blue); background: none; border: none; }

/* ==========================================================================
   Tables — one flat list pattern
   ========================================================================== */
.table-wrap { overflow-x: auto; }
table.tbl { width: 100%; border-collapse: collapse; background: var(--bg); }
.tbl th {
  text-align: left;
  font-size: 11px; font-weight: 600; letter-spacing: .9px; text-transform: uppercase;
  color: var(--text-3);
  padding: 10px 16px;
  background: var(--bg-paper);
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
.tbl td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  font-size: 13.5px;
  vertical-align: middle;
}
.tbl tbody tr:hover { background: var(--bg-tint); }
.tbl tbody tr:last-child td { border-bottom: none; }
.tbl .row-actions { display: flex; gap: 2px; justify-content: flex-end; }
.tbl td .primary-cell { font-weight: 500; color: var(--text); }
.tbl td .meta { display: block; font-size: 12px; color: var(--text-3); margin-top: 2px; }
.tbl td.num { text-align: right; font-variant-numeric: tabular-nums; }
.tbl .check { width: 36px; }
.tbl input[type="checkbox"] { width: 15px; height: 15px; accent-color: var(--navy); }

/* Pagination — single widget */
.pager {
  display: flex; align-items: center; gap: 6px;
  padding: 12px 20px;
  background: var(--bg);
  font-size: 13px; color: var(--text-2);
}
.pager .info { margin-right: auto; font-size: 12.5px; color: var(--text-3); }
.pager button {
  min-width: 30px; height: 30px; padding: 0 8px;
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  background: var(--bg); color: var(--text-2); font-size: 12.5px;
}
.pager button.on { background: var(--navy); border-color: var(--navy); color: #fff; font-weight: 600; }
.pager button:hover:not(.on) { background: var(--bg-paper); }

/* ==========================================================================
   Status chips — ONE system, domain maps via modifiers
   ========================================================================== */
.chip {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 11.5px; font-weight: 600; letter-spacing: .3px;
  padding: 3px 10px; border-radius: 12px;
  border: 1px solid transparent;
  white-space: nowrap;
}
.chip::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
.chip--success { background: #E9FAF8; color: #157F77; border-color: #BDEEEA; }
.chip--warning { background: #FFF6E0; color: #99660A; border-color: #FFE1A3; }
.chip--error   { background: #FEF2F2; color: #B91C1C; border-color: #FECACA; }
.chip--info    { background: var(--bg-tint); color: #0069A8; border-color: #C7DFF5; }
.chip--neutral { background: var(--bg-paper); color: var(--text-2); border-color: var(--border); }
.chip--navy    { background: var(--navy); color: #fff; border-color: var(--navy); }
.chip--plain::before { display: none; }

/* ==========================================================================
   Tabs
   ========================================================================== */
.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--border); padding: 0 20px; background: var(--bg); }
.tab {
  padding: 12px 14px;
  font-size: 13.5px; font-weight: 500; color: var(--text-2);
  border: none; background: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
}
.tab:hover { color: var(--text); }
.tab.active { color: var(--blue); border-bottom-color: var(--blue); font-weight: 600; }

/* ==========================================================================
   Forms — sectioned cards, 2-col grid, sticky action bar
   ========================================================================== */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px 20px; }
.form-grid .span-2 { grid-column: span 2; }
.field label {
  display: block;
  font-size: 12px; font-weight: 600; color: var(--text-2);
  margin-bottom: 6px;
}
.field label .req { color: var(--error); margin-left: 2px; }
.field input[type="text"], .field input[type="email"], .field input[type="date"],
.field input[type="number"], .field input[type="tel"], .field input[type="url"],
.field input[type="password"], .field textarea {
  width: 100%; height: 36px;
  border: 1px solid var(--border-strong); border-radius: var(--radius-sm);
  padding: 0 12px; font-size: 13.5px; font-family: inherit; color: var(--text);
  background: var(--bg); outline: none;
}
.field textarea { height: auto; padding: 10px 12px; resize: vertical; }
.field input:focus, .field textarea:focus, .field select:focus { border-color: var(--blue); }
.field select { width: 100%; }
.field .helper { font-size: 11.5px; color: var(--text-3); margin-top: 5px; }
.field.has-error input, .field.has-error select { border-color: var(--error); }
.field .err-msg { font-size: 11.5px; color: var(--error); margin-top: 5px; }
.field .input-group { display: flex; gap: 8px; align-items: center; }
.field .input-group input { flex: 1; }
.check-row { display: flex; align-items: flex-start; gap: 10px; font-size: 13px; color: var(--text-2); }
.check-row input { width: 15px; height: 15px; margin-top: 2px; accent-color: var(--navy); }

.action-bar {
  position: sticky; bottom: 0;
  background: var(--bg);
  border-top: 1px solid var(--border);
  padding: 14px 28px;
  display: flex; gap: 10px; justify-content: flex-end; align-items: center;
  z-index: 15;
}
.action-bar .note { margin-right: auto; font-size: 12.5px; color: var(--text-3); }

/* ==========================================================================
   Dialogs & drawers (rendered statically for wireframe review)
   ========================================================================== */
.overlay-demo {
  background: rgba(15,26,74,.45);
  border-radius: var(--radius);
  padding: 48px 24px;
  display: flex; align-items: flex-start; justify-content: center;
  margin-bottom: 20px;
}
.dialog {
  background: var(--bg); border-radius: var(--radius);
  width: 100%; max-width: 440px;
  border: 1px solid var(--border);
}
.dialog-head { padding: 18px 22px 0; }
.dialog-head h3 { font-size: 16px; font-weight: 600; }
.dialog-head p { font-size: 13px; color: var(--text-2); margin-top: 6px; line-height: 1.5; }
.dialog-body { padding: 16px 22px; display: flex; flex-direction: column; gap: 14px; }
.dialog-foot { padding: 14px 22px; border-top: 1px solid var(--border); display: flex; justify-content: flex-end; gap: 10px; }

.drawer-demo { display: flex; justify-content: flex-end; }
.drawer {
  background: var(--bg); width: 100%; max-width: 420px; min-height: 420px;
  border-left: 1px solid var(--border);
  display: flex; flex-direction: column;
}
.drawer .dialog-body { flex: 1; }

/* ==========================================================================
   Feedback: toasts, alerts, empty states, skeletons
   ========================================================================== */
.toast {
  display: inline-flex; align-items: center; gap: 10px;
  background: var(--navy); color: #fff;
  border-radius: var(--radius-sm);
  padding: 10px 16px; font-size: 13px;
}
.toast svg { width: 15px; height: 15px; stroke: var(--success); }
.alert {
  display: flex; gap: 10px; align-items: flex-start;
  border-radius: var(--radius-sm);
  padding: 12px 14px; font-size: 13px; line-height: 1.5;
  border: 1px solid;
  margin-bottom: 16px;
}
.alert svg { width: 16px; height: 16px; stroke: currentColor; margin-top: 1px; }
.alert--info    { background: var(--bg-tint); border-color: #C7DFF5; color: #0069A8; }
.alert--success { background: #E9FAF8; border-color: #BDEEEA; color: #157F77; }
.alert--warning { background: #FFF6E0; border-color: #FFE1A3; color: #99660A; }
.alert--error   { background: #FEF2F2; border-color: #FECACA; color: #B91C1C; }

.empty {
  padding: 56px 24px; text-align: center; background: var(--bg);
}
.empty .glyph {
  width: 48px; height: 48px; border-radius: 50%;
  background: var(--bg-tint); color: var(--blue);
  display: inline-flex; align-items: center; justify-content: center; margin-bottom: 14px;
}
.empty .glyph svg { width: 22px; height: 22px; stroke: currentColor; }
.empty h3 { font-size: 15px; font-weight: 600; margin-bottom: 6px; }
.empty p { font-size: 13px; color: var(--text-2); margin-bottom: 16px; }

.skel { background: linear-gradient(90deg, #EEF1F5 25%, #F6F8FA 50%, #EEF1F5 75%); background-size: 200% 100%; animation: skel 1.4s infinite; border-radius: 4px; }
@keyframes skel { 0% { background-position: 200% 0; } 100% { background-position: -200% 0; } }

/* ==========================================================================
   Misc: stepper, QR, definition lists, section labels, code
   ========================================================================== */
.stepper { display: flex; align-items: center; gap: 0; margin-bottom: 24px; }
.step { display: flex; align-items: center; gap: 10px; }
.step .n {
  width: 28px; height: 28px; border-radius: 50%;
  border: 1.5px solid var(--border-strong); color: var(--text-3);
  display: flex; align-items: center; justify-content: center;
  font-size: 12.5px; font-weight: 600; background: var(--bg);
}
.step.done .n { background: var(--success); border-color: var(--success); color: #fff; }
.step.current .n { background: var(--navy); border-color: var(--navy); color: #fff; }
.step .t { font-size: 13px; color: var(--text-3); font-weight: 500; }
.step.current .t, .step.done .t { color: var(--text); }
.step-line { flex: 1; height: 1.5px; background: var(--border); margin: 0 14px; min-width: 32px; }
.step-line.done { background: var(--success); }

.qr-box {
  width: 168px; height: 168px;
  border: 1px solid var(--border); border-radius: var(--radius);
  background:
    repeating-linear-gradient(0deg, var(--navy) 0 8px, transparent 8px 16px),
    repeating-linear-gradient(90deg, var(--navy) 0 8px, #fff 8px 16px);
  background-blend-mode: screen;
  position: relative;
}
.qr-box::after {
  content: "QR"; position: absolute; inset: 0; margin: auto;
  width: 44px; height: 44px; background: var(--bg); border: 1px solid var(--border);
  border-radius: 6px; display: flex; align-items: center; justify-content: center;
  font-size: 12px; font-weight: 700; color: var(--navy);
}

.dl { display: grid; grid-template-columns: 160px 1fr; row-gap: 12px; column-gap: 16px; font-size: 13.5px; }
.dl dt { color: var(--text-3); font-size: 12px; font-weight: 600; text-transform: uppercase; letter-spacing: .6px; padding-top: 2px; }
.dl dd { color: var(--text); }

.section-label {
  font-size: 11px; font-weight: 700; letter-spacing: 1.1px; text-transform: uppercase;
  color: var(--text-3); margin: 28px 0 12px;
  display: flex; align-items: center; gap: 10px;
}
.section-label::after { content: ""; flex: 1; height: 1px; background: var(--border); }

code.mono, .mono {
  font-family: 'SF Mono', 'Roboto Mono', Menlo, monospace;
  font-size: 12px; background: var(--bg-paper);
  border: 1px solid var(--border); border-radius: 4px; padding: 2px 6px;
  color: var(--text-2); word-break: break-all;
}

/* Wireframe annotation ribbon (design-review aid, not product UI) */
.wf-note {
  background: var(--bg-tint);
  border: 1px dashed var(--blue-soft);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  font-size: 12px; color: #3D4C9E;
  margin: 28px 0 12px;
}
.wf-note b { color: var(--navy); }

@media (max-width: 900px) {
  .sidebar { display: none; }
  .form-grid { grid-template-columns: 1fr; }
  .form-grid .span-2 { grid-column: span 1; }
  .content { padding: 16px; }
}