/* CONVERGE Phase 1 — refined dark, production-friendly theme (§10.3).
   Local system fonts only: the app must work fully offline on a LAN. */
:root {
  --bg: #0c0f14; --panel: #151a22; --panel2: #1d242f; --panel3: #242e3d;
  --text: #e9eef5; --muted: #97a5b8; --faint: #6b7889;
  --accent: #2dd4bf; --accent-ink: #04241d;
  --danger: #f87171; --danger-bg: #2b1215; --danger-border: #7f2d33;
  --warn: #fbbf24; --warn-bg: #2a2103; --warn-border: #8a6d1a; --warn-text: #fde68a;
  --ok: #4ade80; --ok-bg: #0f2417; --ok-border: #1f5138;
  --border: #2a3342; --border-strong: #3a465a;
  --blue: #3b82f6; --green: #22c55e; --red: #ef4444; --yellow: #eab308; --purple: #c084fc;
  --radius: 12px;
  --shadow: 0 6px 24px rgba(0, 0, 0, 0.35);
}
* { box-sizing: border-box; }
/* The hidden attribute must always win: several views set `display` via
   class rules (.login-wrap, .shell, .bottomnav), which would otherwise
   override the UA's [hidden] rule and stack every view on screen at once.
   (Latent since Increment 1; caught by Increment 3's browser evidence.) */
[hidden] { display: none !important; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-size: 16px; line-height: 1.45;
}
h1 { font-size: 1.7em; } h2 { font-size: 1.45em; } h3 { font-size: 1.12em; } h4 { font-size: 1em; }
h1, h2, h3, h4 { margin: 0.5em 0 0.35em; line-height: 1.25; }
p { margin: 0.4em 0; }
a { color: var(--accent); }
code { background: var(--panel2); padding: 0.1em 0.35em; border-radius: 5px; font-size: 0.92em; }
.muted { color: var(--muted); } .small { font-size: 0.86em; } .intro { max-width: 62ch; }
.error-text { color: var(--danger); min-height: 1.2em; }
.hint { font-size: 0.88em; min-height: 1.2em; margin: 0.2em 0; }
.hint.warn { color: var(--warn-text); }

/* Forms */
label { display: block; margin: 0.55em 0; font-size: 0.9em; color: var(--muted); }
input, select, textarea {
  width: 100%; max-width: 100%; padding: 0.55em 0.7em; margin-top: 0.25em;
  background: var(--panel2); color: var(--text);
  border: 1px solid var(--border); border-radius: 8px; font-size: 1em; font-family: inherit;
}
input:focus, select:focus, textarea:focus, button:focus-visible {
  outline: 2px solid var(--accent); outline-offset: 1px; border-color: var(--accent);
}
input[type="checkbox"] { width: auto; margin: 0 0.45em 0 0; accent-color: var(--accent); }
.form-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 170px), 1fr)); gap: 0 1em; }
.form-actions { display: flex; gap: 0.6em; flex-wrap: wrap; margin-top: 0.8em; align-items: center; }
.form-msg { min-height: 1.25em; font-size: 0.92em; margin-top: 0.5em; }
.form-msg.error { color: var(--danger); }
.form-msg.success { color: var(--ok); }
.form-msg.warn { color: var(--warn-text); }
fieldset { border: 1px solid var(--border); border-radius: 10px; margin: 0.9em 0; padding: 0.6em 1em 0.9em; min-width: 0; }
fieldset legend { padding: 0 0.4em; color: var(--text); font-weight: 600; font-size: 0.95em; }

/* Buttons */
button {
  padding: 0.55em 1.05em; min-height: 40px; border-radius: 8px;
  border: 1px solid var(--border-strong); background: var(--panel2); color: var(--text);
  cursor: pointer; font-size: 0.95em; font-family: inherit;
}
button:hover { filter: brightness(1.18); }
button:active { transform: translateY(1px); }
button:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }
button.primary { background: var(--accent); color: var(--accent-ink); border-color: transparent; font-weight: 650; }
button.danger { background: var(--danger-bg); color: #fecaca; border-color: var(--danger-border); }
button.block { width: 100%; }
.small-btn { padding: 0.35em 0.8em; min-height: 36px; font-size: 0.88em; }
.small-btn.primary { background: var(--accent); color: var(--accent-ink); border-color: transparent; font-weight: 650; }

/* Cards, banners, badges */
.card {
  background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 1em 1.15em; margin: 0.75em 0; box-shadow: var(--shadow);
}
.banner { border-radius: 10px; padding: 0.75em 1em; margin: 0.75em 0; font-size: 0.95em; border: 1px solid var(--border); background: var(--panel2); }
.banner-warn { background: var(--warn-bg); border-color: var(--warn-border); color: var(--warn-text); }
.banner-error { background: var(--danger-bg); border-color: var(--danger-border); color: #fecaca; }
.banner-success { background: var(--ok-bg); border-color: var(--ok-border); color: #bbf7d0; }
#flash { position: sticky; top: 0.6em; z-index: 30; box-shadow: var(--shadow); }
.badge {
  display: inline-flex; align-items: center; gap: 0.35em; padding: 0.2em 0.7em; border-radius: 999px;
  font-size: 0.8em; font-weight: 700; white-space: nowrap; border: 1px solid var(--border-strong); color: var(--muted);
}
.badge-ok { background: var(--ok-bg); border-color: var(--ok-border); color: #bbf7d0; }
.badge-bad { background: var(--danger-bg); border-color: var(--danger-border); color: #fecaca; }
.badge-warn { background: var(--warn-bg); border-color: var(--warn-border); color: var(--warn-text); }
.badge-neutral { background: var(--panel2); }
.empty {
  border: 1.5px dashed var(--border-strong); border-radius: var(--radius);
  padding: 1.4em 1em; text-align: center; color: var(--muted); margin: 0.75em 0; background: var(--panel);
}
.loading { color: var(--muted); }
.loading::after { content: ""; display: inline-block; width: 0.85em; height: 0.85em; margin-left: 0.5em;
  border: 2px solid var(--border-strong); border-top-color: var(--accent); border-radius: 50%;
  animation: spin 0.8s linear infinite; vertical-align: -0.1em; }
@keyframes spin { to { transform: rotate(360deg); } }

/* Rotation colour chips — always a swatch PLUS the colour name as text. */
.chip {
  display: inline-flex; align-items: center; gap: 0.45em; padding: 0.22em 0.75em 0.22em 0.55em;
  border-radius: 999px; font-size: 0.83em; font-weight: 700; white-space: nowrap;
  border: 1px solid var(--border-strong); background: var(--panel2); color: var(--text);
}
.chip .swatch { width: 0.72em; height: 0.72em; border-radius: 50%; background: #cbd5e1; flex-shrink: 0;
  box-shadow: 0 0 0 1.5px rgba(255,255,255,0.25) inset; }
.chip-blue { background: rgba(59,130,246,0.16); border-color: var(--blue); color: #bfdbfe; }
.chip-blue .swatch { background: var(--blue); }
.chip-green { background: rgba(34,197,94,0.15); border-color: var(--green); color: #bbf7d0; }
.chip-green .swatch { background: var(--green); }
.chip-red { background: rgba(239,68,68,0.15); border-color: var(--red); color: #fecaca; }
.chip-red .swatch { background: var(--red); }
.chip-yellow { background: rgba(234,179,8,0.14); border-color: var(--yellow); color: #fef08a; }
.chip-yellow .swatch { background: var(--yellow); }
.chip-custom { background: rgba(192,132,252,0.15); border-color: var(--purple); color: #e9d5ff; }
.chip-custom .swatch { background: var(--purple); }
.chip-none { background: transparent; border-style: dashed; color: var(--muted); font-weight: 600; }
.chip-none .swatch { background: transparent; box-shadow: 0 0 0 1.5px var(--border-strong) inset; }
.chip-warn { background: var(--warn-bg); border: 1px dashed var(--warn-border); color: var(--warn-text); }
.chip-warn .swatch { background: var(--warn); }

/* Login / setup */
.login-wrap { min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 1em; }
.login-card { width: 100%; max-width: 430px; }
.brand-block { text-align: center; margin-bottom: 0.6em; }
.brand-block h1 { letter-spacing: 0.14em; color: var(--accent); margin-bottom: 0.1em; }
.tagline { color: var(--accent); font-style: italic; margin: 0; }

/* Shell layout (desktop: sidebar; mobile: top bar + bottom nav) */
.shell { display: flex; min-height: 100vh; align-items: stretch; }
.sidebar {
  width: 248px; flex-shrink: 0; background: var(--panel); border-right: 1px solid var(--border);
  padding: 1.1em 0.9em; display: flex; flex-direction: column; gap: 0.35em;
  position: sticky; top: 0; height: 100vh; overflow-y: auto;
}
.brand { font-weight: 800; letter-spacing: 0.13em; font-size: 1.18em; color: var(--accent); }
.sidebar nav { display: flex; flex-direction: column; gap: 0.3em; margin-top: 0.6em; }
.nav-group { font-size: 0.72em; font-weight: 700; letter-spacing: 0.14em; text-transform: uppercase; color: var(--faint); margin: 0.85em 0.4em 0.25em; }
.nav-btn {
  display: flex; align-items: center; gap: 0.55em; text-align: left; width: 100%;
  background: transparent; border-color: transparent; color: var(--text); min-height: 42px;
}
.nav-btn:hover { background: var(--panel2); filter: none; }
.nav-btn.active { background: var(--accent); color: var(--accent-ink); font-weight: 650; }
.nav-ico { font-size: 1.05em; line-height: 1; }
.sidebar-foot { margin-top: auto; display: flex; flex-direction: column; gap: 0.5em; padding-top: 1em; }
.topbar { display: none; }
.bottomnav { display: none; }
.content { flex: 1; min-width: 0; padding: 1.1em 1.5em 2em; max-width: 1060px; margin: 0 auto; width: 100%; }
.section-head { display: flex; justify-content: space-between; align-items: center; gap: 1em; flex-wrap: wrap; }
.section-head h2, .section-head h3 { margin-right: auto; }

/* Dashboard */
.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 150px), 1fr)); gap: 0.75em; margin: 0.5em 0; }
.stat { text-align: center; margin: 0; }
.stat-n { font-size: 1.85em; font-weight: 750; line-height: 1.15; }
.stat-attention { border-color: var(--danger-border); background: var(--danger-bg); }
.stat-attention .stat-n { color: #fecaca; }
.next-service { border-color: var(--accent); border-width: 1.5px; }
.next-service .ns-title { font-size: 1.3em; font-weight: 700; }
.times-row { display: flex; gap: 1.1em; flex-wrap: wrap; margin: 0.5em 0; }
.times-row div { min-width: 0; }
.times-row .t-label { font-size: 0.72em; text-transform: uppercase; letter-spacing: 0.1em; color: var(--faint); font-weight: 700; }
.times-row .t-value { font-weight: 650; }

/* Next-service detail / booth panel (Increment 4) — glanceable, large,
   high-contrast; the provenance strip keeps scheduled data from ever
   being mistaken for live device data (blueprint §6). */
.booth-panel { border-color: var(--accent); border-width: 1.5px; }
.booth-prov {
  display: flex; gap: 0.6em; align-items: center; flex-wrap: wrap;
  background: var(--warn-bg); border: 1px solid var(--warn-border); color: var(--warn-text);
  border-radius: 8px; padding: 0.5em 0.8em; font-size: 0.9em; margin-bottom: 0.8em;
}
.booth-title { font-size: 1.55em; font-weight: 800; line-height: 1.2; overflow-wrap: anywhere; min-width: 0; }
.booth-meta { font-size: 1.05em; font-weight: 650; margin: 0.25em 0; }
.booth-dept { margin-top: 0.9em; }
.booth-dept h4 { font-size: 1.05em; border-bottom: 1px solid var(--border); padding-bottom: 0.3em; }
.booth-row {
  display: flex; align-items: center; gap: 0.8em; flex-wrap: wrap;
  padding: 0.55em 0.7em; border-radius: 8px; margin: 0.35em 0; background: var(--panel2);
  border: 1px solid var(--border);
}
.booth-row.attention { border-color: var(--danger-border); background: var(--danger-bg); }
.booth-pos { font-weight: 700; min-width: 0; overflow-wrap: anywhere; }
.booth-assignee { flex: 1 1 auto; min-width: 0; overflow-wrap: anywhere; }
.booth-who { font-weight: 650; }
.booth-missing { font-weight: 800; color: #fecaca; letter-spacing: 0.02em; }
.booth-panel.booth-large { font-size: 1.4em; }
.booth-panel.booth-large .booth-title { font-size: 1.7em; }
.booth-panel.booth-large .times-row .t-value { font-size: 1.15em; }

/* Service cards / lists */
.service-list { display: grid; gap: 0.1em; }
.service-card { margin: 0.45em 0; }
.service-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 0.8em; }
.service-head strong { font-size: 1.05em; overflow-wrap: anywhere; min-width: 0; }
.service-meta { display: flex; gap: 0.5em; flex-wrap: wrap; align-items: center; margin-top: 0.3em; }
.service-foot { display: flex; justify-content: space-between; align-items: center; gap: 0.8em; margin-top: 0.6em; flex-wrap: wrap; }
.fill-line { display: inline-flex; gap: 0.45em; flex-wrap: wrap; align-items: center; }
.rows { list-style: none; padding: 0; margin: 0; }
.rows > li { padding: 0.6em 0; border-bottom: 1px solid var(--border); }
.rows > li:last-child { border-bottom: none; }

/* Toolbar (volunteer filters) */
.toolbar { display: flex; gap: 1em; flex-wrap: wrap; align-items: end; }
.toolbar-field { margin: 0; flex: 0 1 220px; }
.toolbar-field.grow { flex: 1 1 220px; }

/* Volunteer eligibility checkbox groups */
.check-groups { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 230px), 1fr)); gap: 0.4em 1.4em; }
.check-group h5 { margin: 0.5em 0 0.3em; font-size: 0.88em; color: var(--text); }
.check-item { display: flex; align-items: center; margin: 0.3em 0; font-size: 0.94em; color: var(--text); cursor: pointer; }
.check-inline { display: flex; align-items: center; color: var(--text); font-size: 0.94em; }
.elig-chips { display: inline-flex; flex-wrap: wrap; gap: 0.3em; margin-top: 0.25em; }
.elig-chip { background: var(--panel3); border: 1px solid var(--border); border-radius: 999px; padding: 0.1em 0.6em; font-size: 0.78em; color: var(--muted); }
.vol-card-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 0.8em; }
.blockout-row { display: flex; justify-content: space-between; align-items: center; gap: 0.8em; padding: 0.45em 0; border-bottom: 1px solid var(--border); flex-wrap: wrap; }
.blockout-form { align-items: end; }
.blockout-form .form-actions { margin-top: 0; }

/* Departments & positions */
.dept-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 0.8em; flex-wrap: wrap; }
.inline-form { border-top: 1px solid var(--border); margin-top: 0.7em; padding-top: 0.4em; }
.pos-row { display: flex; justify-content: space-between; align-items: center; gap: 0.8em; padding: 0.5em 0; border-bottom: 1px solid var(--border); flex-wrap: wrap; }
.pos-row:last-child { border-bottom: none; }
.row-actions { display: inline-flex; gap: 0.45em; flex-wrap: wrap; }

/* Assignment board */
.board-summary { display: flex; gap: 0.5em; flex-wrap: wrap; margin: 0.4em 0 0.2em; }
.board-dept { margin-bottom: 1.2em; }
.board-dept h4 { border-bottom: 1px solid var(--border); padding-bottom: 0.3em; }
.board-position { border: 1px solid var(--border); border-radius: 10px; padding: 0.8em 1em; margin: 0.6em 0; background: var(--panel2); }
.board-position.attention { border-color: var(--warn-border); }
.board-pos-head { display: flex; justify-content: space-between; align-items: center; gap: 0.8em; flex-wrap: wrap; }
.slot-badge { display: inline-flex; align-items: center; gap: 0.35em; padding: 0.2em 0.7em; border-radius: 999px; font-size: 0.8em; font-weight: 700; white-space: nowrap; border: 1px solid transparent; }
.slot-filled { background: var(--ok-bg); border-color: var(--ok-border); color: #bbf7d0; }
.slot-refill { background: var(--danger-bg); border-color: var(--danger-border); color: #fecaca; }
.slot-unfilled { background: var(--warn-bg); border-color: var(--warn-border); color: var(--warn-text); }
.slot-open { background: transparent; border-color: var(--border-strong); border-style: dashed; color: var(--muted); }
.assign-row { display: flex; justify-content: space-between; align-items: center; gap: 0.8em; padding: 0.5em 0; border-top: 1px solid var(--border); flex-wrap: wrap; }
.assign-row > span:first-child { min-width: 0; overflow-wrap: anywhere; }
.assign-actions { display: inline-flex; align-items: center; gap: 0.5em; flex-wrap: wrap; }
.assign-actions select { width: auto; margin-top: 0; }
.assign-add { display: flex; gap: 0.5em; align-items: center; margin-top: 0.65em; flex-wrap: wrap; }
.assign-add select { flex: 1 1 200px; min-width: 0; margin-top: 0; width: auto; }
.status-chip { text-transform: capitalize; }
.status-confirmed { background: var(--ok-bg); border-color: var(--ok-border); color: #bbf7d0; }
.status-declined { background: var(--danger-bg); border-color: var(--danger-border); color: #fecaca; }
.warn-text { color: var(--warn-text); font-size: 0.88em; font-weight: 600; }

/* Settings / users */
.user-link-controls { display: flex; gap: 1em; align-items: end; flex-wrap: wrap; margin-top: 0.5em; }
.user-link-controls label { flex: 1 1 200px; min-width: 0; margin: 0; }
fieldset.anchor-step { background: var(--panel2); }
#anchor-preview-box { border-top: 1px solid var(--border); margin-top: 1em; padding-top: 0.4em; }
#anchor-preview ul, #rotation-preview ul { list-style: none; padding: 0; margin: 0.4em 0; }
#anchor-preview li, #rotation-preview li { display: flex; justify-content: space-between; align-items: center; gap: 0.8em; padding: 0.4em 0; border-bottom: 1px solid var(--border); flex-wrap: wrap; }

/* Responsive: tablet + phone — sidebar becomes top bar + bottom nav */
@media (max-width: 900px) {
  .shell { flex-direction: column; }
  .sidebar { display: none; }
  .topbar {
    display: flex; justify-content: space-between; align-items: center; gap: 0.8em;
    padding: 0.6em 1em; background: var(--panel); border-bottom: 1px solid var(--border);
    position: sticky; top: 0; z-index: 40;
  }
  .topbar-user { display: flex; align-items: center; gap: 0.6em; min-width: 0; }
  .topbar-user span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: 34vw; }
  .bottomnav {
    display: flex; position: fixed; left: 0; right: 0; bottom: 0; z-index: 40;
    background: var(--panel); border-top: 1px solid var(--border);
    padding: 0.3em 0.2em calc(0.3em + env(safe-area-inset-bottom));
  }
  .bottomnav .nav-btn {
    flex: 1 1 0; min-width: 0; flex-direction: column; justify-content: center; gap: 0.15em;
    text-align: center; font-size: 0.68em; padding: 0.4em 0.1em; min-height: 52px; border-radius: 10px;
  }
  .bottomnav .nav-ico { font-size: 1.35em; }
  .content { padding: 0.9em 0.9em 96px; }
  #flash { top: 0.4em; }
  .stat-grid { grid-template-columns: repeat(2, 1fr); }
  .service-foot { align-items: stretch; }
  .assign-add select { flex-basis: 100%; }
}
@media (max-width: 420px) {
  body { font-size: 15px; }
  .times-row { gap: 0.8em; }
  .toolbar-field { flex-basis: 100%; }
}