/* SLF — shared styles
   Palette/type system intentionally matches the sibling rota project
   (salfordneurosurgery.uk) for visual consistency: NHS blue on a warm
   paper background, Fraunces for display text, Inter for UI, IBM Plex
   Mono for codes/numbers. */

:root {
  --nhs-blue:    #005EB8;
  --nhs-blue-dk: #003B73;
  --nhs-blue-lt: #E6F0FA;

  --bg:          #F7F5F0;
  --bg-elevated: #FFFFFF;

  --teal:       var(--nhs-blue);
  --teal-dim:   var(--nhs-blue-dk);
  --amber:      #A16207;
  --red:        #C8102E;
  --green:      #007F3B;
  --slate:      #5B6B7F;
  --slate-dim:  #5F6367;
  --ink:        #1A2B42;
  --ink-dim:    #34465C;
  --surface:    #F0EEE8;
  --card:       #FFFFFF;
  --border:     rgba(0,59,115,0.14);

  --mono: 'IBM Plex Mono', monospace;
  --sans: 'Inter', sans-serif;
  --serif: 'Fraunces', Georgia, serif;
  --radius: 10px;
  --transition: 180ms ease;

  --shadow-sm: 0 1px 2px rgba(0,40,90,0.06), 0 1px 3px rgba(0,40,90,0.04);
  --shadow-md: 0 2px 8px rgba(0,40,90,0.08), 0 1px 3px rgba(0,40,90,0.05);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { height: 100%; font-size: 15px; }
body {
  min-height: 100%;
  font-family: var(--sans);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.45;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--teal); text-decoration: none; }
button { cursor: pointer; font-family: var(--sans); border: none; background: none; }
h1, h2, h3 { font-family: var(--serif); font-weight: 600; color: var(--ink); }

.wrap { max-width: 980px; margin: 0 auto; padding: 0 1.25rem; }

/* ── Header ─────────────────────────────────────────────── */
header.top {
  background: var(--bg-elevated);
  border-bottom: 1px solid var(--border);
  padding: 0.9rem 0;
}
header.top .wrap { display: flex; align-items: center; gap: 0.65rem; }
.brand { display: flex; align-items: center; gap: 0.6rem; }
.brand img.brand-mark { width: 34px; height: 34px; flex: none; border-radius: 8px; display: block; }
.brand .name { font-family: var(--serif); font-size: 1.35rem; font-weight: 700; color: var(--nhs-blue); letter-spacing: 0.01em; }
.brand .tag { font-size: 0.72rem; color: var(--slate); margin-top: 1px; }
header.top .spacer { flex: 1; }
.backlink { font-size: 0.88rem; color: var(--slate); }
.backlink:hover { color: var(--teal); }

/* ── Buttons ────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.4rem;
  font-family: var(--sans); font-size: 0.92rem; font-weight: 500;
  padding: 0.65rem 1.1rem; border-radius: var(--radius);
  border: 1px solid var(--border); background: var(--card); color: var(--ink);
  transition: background var(--transition), border-color var(--transition), color var(--transition), transform var(--transition);
}
.btn:hover { border-color: var(--teal); color: var(--teal); }
.btn:active { transform: scale(0.98); }
.btn-primary { background: var(--nhs-blue); border-color: var(--nhs-blue); color: #fff; }
.btn-primary:hover { background: var(--nhs-blue-dk); border-color: var(--nhs-blue-dk); color: #fff; }
.btn-full { width: 100%; }
.btn-full { display: flex; }
.btn[disabled] { opacity: 0.5; cursor: not-allowed; }
.btn-sm { padding: 0.4rem 0.7rem; font-size: 0.82rem; }
.btn-danger { color: var(--red); border-color: rgba(200,16,46,0.3); }
.btn-danger:hover { background: rgba(200,16,46,0.08); border-color: var(--red); }

/* ── Cards / tiles ──────────────────────────────────────── */
.card {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 1.1rem 1.25rem; box-shadow: var(--shadow-sm);
}
.tile-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 0.85rem;
  margin: 1.5rem 0;
}
.tile {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 1.4rem 1.1rem; text-align: left; box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  display: flex; flex-direction: column; gap: 0.3rem;
}
.tile:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); border-color: var(--teal); }
.tile .tile-title { font-family: var(--serif); font-size: 1.15rem; font-weight: 600; color: var(--ink); }
.tile .tile-sub { font-size: 0.8rem; color: var(--slate); }
.attribution { font-size: 0.72rem; color: var(--slate); text-transform: lowercase; letter-spacing: 0.01em; }

/* ── Chips (single/multi-select) ───────────────────────── */
.chip-row { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.chip {
  padding: 0.5rem 0.95rem; border-radius: 999px; border: 1px solid var(--border);
  background: var(--card); font-size: 0.88rem; color: var(--ink-dim);
  transition: background var(--transition), border-color var(--transition), color var(--transition);
}
.chip:hover { border-color: var(--teal); }
.chip.selected { background: var(--nhs-blue); border-color: var(--nhs-blue); color: #fff; }
.chip.readonly { background: var(--surface); color: var(--slate); cursor: default; }
.chip.readonly:hover { border-color: var(--border); }

/* ── Forms ──────────────────────────────────────────────── */
label.field-label { display: block; font-size: 0.85rem; font-weight: 500; color: var(--ink-dim); margin-bottom: 0.35rem; }
.form-control {
  width: 100%; padding: 0.6rem 0.75rem; border: 1px solid var(--border); border-radius: var(--radius);
  background: var(--card); color: var(--ink); font-family: var(--sans); font-size: 0.92rem;
}
.form-control:focus { outline: none; border-color: var(--teal); }
.field-group { margin-bottom: 1.1rem; }
.hint { font-size: 0.78rem; color: var(--slate); margin-top: 0.3rem; }
.err { font-size: 0.82rem; color: var(--red); margin-top: 0.35rem; display: none; }

/* ── Status / badges ────────────────────────────────────── */
.badge { display: inline-block; font-size: 0.72rem; font-weight: 600; padding: 0.15rem 0.5rem; border-radius: 999px; }
.badge-verify { background: rgba(161,98,7,0.14); color: var(--amber); }
.badge-ok { background: rgba(0,127,59,0.12); color: var(--green); }
.badge-cranial { background: var(--nhs-blue-lt); color: var(--nhs-blue-dk); }
.badge-spinal { background: rgba(91,107,127,0.14); color: var(--slate); }

.status-msg { font-size: 0.88rem; padding: 0.6rem 0.9rem; border-radius: var(--radius); margin-top: 0.75rem; }
.status-msg.ok { background: rgba(0,127,59,0.1); color: var(--green); }
.status-msg.err { background: rgba(200,16,46,0.1); color: var(--red); }
.status-msg.info { background: var(--nhs-blue-lt); color: var(--nhs-blue-dk); }

/* ── Modal / dialog ─────────────────────────────────────── */
.overlay {
  position: fixed; inset: 0; background: rgba(26,43,66,0.45); display: flex;
  align-items: center; justify-content: center; padding: 1rem; z-index: 50;
}
.modal { background: var(--card); border-radius: var(--radius); box-shadow: var(--shadow-md); max-width: 480px; width: 100%; padding: 1.5rem; }
.modal h2 { font-size: 1.2rem; margin-bottom: 0.75rem; }
.modal .modal-actions { display: flex; justify-content: flex-end; gap: 0.6rem; margin-top: 1.25rem; }

/* ── Landing screen (index.html) ───────────────────────── */
.landing {
  min-height: 100vh; display: flex; flex-direction: column; align-items: center; justify-content: center;
  text-align: center; padding: 2rem 1rem; transition: opacity 420ms ease;
}
.landing .brand-big img.brand-mark { width: 96px; height: 96px; border-radius: 22px; }
.landing .brand-big .name { font-family: var(--serif); font-size: 3rem; font-weight: 700; color: var(--nhs-blue); margin-top: 0.75rem; }
.landing .brand-big .tag { color: var(--slate); font-size: 0.95rem; margin-top: 0.35rem; }

.fade-out { opacity: 0; pointer-events: none; }
.fade-in { opacity: 1; }

/* utility */
.mt-1 { margin-top: 0.5rem; } .mt-2 { margin-top: 1rem; } .mt-3 { margin-top: 1.5rem; }
.muted { color: var(--slate); }
.mono { font-family: var(--mono); }
.center { text-align: center; }
.row { display: flex; align-items: center; gap: 0.6rem; }
.row.between { justify-content: space-between; }
.grow { flex: 1; }