/* ============================================
   UK Labour Cost Auditor (Static MVP)
   CSS: layout + print styling + modals + mobile
   ============================================ */

:root{
  --slate-950:#020617;
  --slate-900:#0f172a;
  --slate-800:#1e293b;
  --slate-700:#334155;
  --slate-600:#475569;
  --slate-400:#94a3b8;
  --text:#f8fafc;
  --muted:#cbd5e1;
  --primary:#2563eb;
  --danger:#ef4444;
  --success:#22c55e;
  --warning:#f59e0b;
  --info:#38bdf8;
  --shadow: 0 20px 60px rgba(0,0,0,.35);
}

*{ box-sizing:border-box; }
.font-inter{ font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif; }

.app-shell{
  display:flex;
  min-height:100vh;
  width:100%;
}

/* Sidebar */
.sidebar{
  width: 280px;
  background: linear-gradient(180deg, rgba(15,23,42,.96), rgba(2,6,23,.98));
  border-right: 1px solid rgba(51,65,85,.7);
  padding: 18px 14px;
  position: sticky;
  top:0;
  height:100vh;
}
.sidebar-header{
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:10px;
  padding: 6px 6px 14px 6px;
  border-bottom: 1px solid rgba(51,65,85,.5);
}
.brand{ display:flex; align-items:center; gap:12px; }
.brand-icon{
  width:40px; height:40px; border-radius:14px;
  background: rgba(37,99,235,.18);
  border: 1px solid rgba(37,99,235,.35);
  display:flex; align-items:center; justify-content:center;
  color: rgba(191,219,254,1);
}
.brand-title{ font-weight:800; letter-spacing:-.02em; }
.brand-subtitle{ font-size:12px; color: var(--slate-400); margin-top:2px; }

.sidebar-nav{ padding: 14px 6px; display:flex; flex-direction:column; gap:8px; }
.nav-item{
  width:100%;
  display:flex;
  align-items:center;
  gap:10px;
  padding: 12px 12px;
  border-radius: 14px;
  border: 1px solid rgba(51,65,85,.3);
  background: rgba(30,41,59,.25);
  color: var(--text);
  cursor:pointer;
  transition: transform .08s ease, background .15s ease, border .15s ease;
  text-align:left;
  font-weight:700;
}
.nav-item i{ width:18px; text-align:center; color: rgba(147,197,253,.9); }
.nav-item:hover{ transform: translateY(-1px); background: rgba(30,41,59,.45); border-color: rgba(71,85,105,.6); }
.nav-item.active{ background: rgba(37,99,235,.22); border-color: rgba(59,130,246,.45); }
.sidebar-footer{
  padding: 12px 8px;
  border-top: 1px solid rgba(51,65,85,.5);
  position:absolute;
  bottom: 14px;
  left: 14px;
  right: 14px;
}
.muted{ color: var(--slate-400); font-size: 12px; }
.muted-sm{ color: var(--slate-400); font-size: 13px; line-height: 1.4; }
.muted-xs{ color: var(--slate-400); font-size: 12px; line-height: 1.4; }

.main{
  flex:1;
  padding: 18px 18px 40px 18px;
  overflow:auto;
}

/* Topbar */
.topbar{
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:14px;
  padding: 14px 14px;
  border: 1px solid rgba(51,65,85,.55);
  border-radius: 18px;
  background: rgba(15,23,42,.55);
  backdrop-filter: blur(10px);
  position: sticky;
  top: 12px;
  z-index: 50;
}
.topbar .left{ display:flex; align-items:center; gap:12px; }
.page-title{ font-size: 16px; font-weight: 800; }
.page-subtitle{ font-size: 12px; color: var(--slate-400); margin-top: 2px; }

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  padding: 10px 14px;
  border-radius: 14px;
  border: 1px solid rgba(51,65,85,.55);
  background: rgba(30,41,59,.35);
  color: var(--text);
  font-weight: 800;
  cursor:pointer;
  transition: transform .08s ease, background .15s ease, border .15s ease;
  user-select:none;
}
.btn:hover{ transform: translateY(-1px); background: rgba(30,41,59,.55); border-color: rgba(71,85,105,.75); }
.btn.primary{
  background: linear-gradient(135deg, rgba(37,99,235,.95), rgba(29,78,216,.95));
  border-color: rgba(59,130,246,.65);
}
.btn.primary:hover{ background: linear-gradient(135deg, rgba(59,130,246,1), rgba(37,99,235,1)); }
.btn.secondary{ background: rgba(30,41,59,.35); }
.btn.full{ width:100%; }
.icon-btn{
  width:42px; height:42px;
  border-radius: 14px;
  border: 1px solid rgba(51,65,85,.55);
  background: rgba(30,41,59,.35);
  color: var(--text);
  cursor:pointer;
}
.icon-btn:hover{ background: rgba(30,41,59,.55); }
.mobile-only{ display:none; }

.code{ background: rgba(2,6,23,.7); border: 1px solid rgba(51,65,85,.7); padding: 2px 6px; border-radius: 8px; font-size: 12px; }

/* Pages */
.page{ display:none; margin-top: 16px; }
.page.active{ display:block; }

.grid-2{ display:grid; grid-template-columns: 1.2fr .8fr; gap:14px; align-items:start; }
.grid-2.tight{ grid-template-columns: 1fr 1fr; gap:12px; }
.mt-4{ margin-top: 16px; }
.mt-6{ margin-top: 24px; }
.mb-3{ margin-bottom: 12px; }

.card{
  border: 1px solid rgba(51,65,85,.55);
  background: rgba(15,23,42,.55);
  border-radius: 22px;
  box-shadow: var(--shadow);
}
.card-header{
  display:flex;
  justify-content:space-between;
  align-items:flex-start;
  gap:12px;
  padding: 16px 16px 0 16px;
}
.card-title{ font-size: 15px; font-weight: 900; letter-spacing:-.01em; }
.card-subtitle{ font-size: 12px; color: var(--slate-400); margin-top: 4px; }
.card-body{ padding: 16px; }
.actions{ display:flex; gap:10px; flex-wrap:wrap; justify-content:flex-end; }

/* Year tags */
.year-tags{ display:flex; gap:8px; }
.year-tag{ font-size: 11px; font-weight: 900; padding: 6px 10px; border-radius: 999px; border: 1px solid rgba(51,65,85,.6); }
.year-tag.old{ background: rgba(148,163,184,.12); color: rgba(226,232,240,.95); }
.year-tag.new{ background: rgba(239,68,68,.12); border-color: rgba(239,68,68,.35); color: rgba(252,165,165,1); }

/* Forms */
.form-row{ display:grid; grid-template-columns: 1fr 1fr; gap:12px; }
.form-group{ display:flex; flex-direction:column; gap:8px; }
.label{ font-size: 12px; color: var(--muted); font-weight: 800; }
.input{
  width:100%;
  padding: 12px 14px;
  border-radius: 14px;
  border: 1px solid rgba(71,85,105,.65);
  background: rgba(2,6,23,.55);
  color: var(--text);
  outline:none;
}
.input:focus{ border-color: rgba(59,130,246,.85); box-shadow: 0 0 0 4px rgba(37,99,235,.18); }
.input-prefix{ position:relative; }
.input-prefix span{
  position:absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--slate-400);
  font-weight: 900;
}
.input-prefix input{ padding-left: 28px; }

.ea-toggle-section{
  margin: 14px 0;
  padding: 12px 14px;
  border-radius: 16px;
  border: 1px solid rgba(34,197,94,.25);
  background: linear-gradient(135deg, rgba(34,197,94,.12), rgba(34,197,94,.06));
}
.ea-toggle{ display:flex; gap:12px; align-items:flex-start; cursor:pointer; }
.ea-toggle input{ width:18px; height:18px; margin-top: 3px; accent-color: var(--success); }
.ea-toggle strong{ display:block; font-weight: 900; }
.ea-toggle .muted-sm{ display:block; margin-top: 2px; }

.lead-form{ display:flex; flex-direction:column; gap:10px; }

.results{ margin-top: 14px; }
.impact{ text-align:center; padding: 14px; border-radius: 18px; border: 1px solid rgba(239,68,68,.28); background: rgba(239,68,68,.06); }
.impact-label{ font-size: 12px; color: var(--muted); font-weight: 900; text-transform: uppercase; letter-spacing: .12em; }
.impact-amount{ font-size: 32px; font-weight: 900; margin-top: 6px; color: rgba(252,165,165,1); }

.metric-card{
  padding: 14px;
  border-radius: 18px;
  border: 1px solid rgba(51,65,85,.55);
  background: rgba(2,6,23,.35);
}
.metric-card.highlight{ border-color: rgba(239,68,68,.35); background: rgba(239,68,68,.06); }
.metric-label{ font-size: 12px; color: var(--muted); font-weight: 900; }
.metric-value{ font-size: 20px; font-weight: 900; margin-top: 6px; }

.divider{ height: 1px; background: rgba(51,65,85,.55); margin: 16px 0; }

.breakdown-title{ font-weight: 900; margin-bottom: 8px; }
.breakdown-grid{ display:grid; grid-template-columns: 1fr 1fr; gap:10px; }
.kv{
  display:flex;
  justify-content:space-between;
  gap:10px;
  padding: 10px 12px;
  border-radius: 14px;
  border: 1px solid rgba(51,65,85,.55);
  background: rgba(2,6,23,.35);
  font-size: 13px;
}
.kv span:last-child{ font-weight: 900; }

/* Callouts */
.callout{
  display:flex;
  gap:12px;
  align-items:flex-start;
  padding: 12px 14px;
  border-radius: 16px;
  border: 1px solid rgba(51,65,85,.55);
  background: rgba(2,6,23,.35);
  margin-top: 14px;
}
.callout-title{ font-weight: 900; }
.callout-text{ color: var(--muted); font-size: 13px; margin-top: 2px; }
.callout.warning{ border-color: rgba(245,158,11,.35); background: rgba(245,158,11,.08); }
.callout.success{ border-color: rgba(34,197,94,.35); background: rgba(34,197,94,.08); }
.callout.info{ border-color: rgba(56,189,248,.35); background: rgba(56,189,248,.07); }
.hidden{ display:none !important; }

/* Upload area */
.upload-area{
  border: 2px dashed rgba(71,85,105,.75);
  border-radius: 22px;
  background: rgba(2,6,23,.25);
  padding: 16px;
  position:relative;
}
.upload-area input[type="file"]{
  position:absolute;
  inset:0;
  opacity:0;
  cursor:pointer;
}
.upload-inner{ display:flex; align-items:center; justify-content:space-between; gap:14px; }
.upload-icon{
  width:52px; height:52px; border-radius: 18px;
  background: rgba(37,99,235,.18);
  border: 1px solid rgba(37,99,235,.35);
  display:flex; align-items:center; justify-content:center;
  color: rgba(191,219,254,1);
  flex: 0 0 auto;
}
.upload-title{ font-weight: 900; }
.upload-subtitle{ font-size: 12px; color: var(--slate-400); margin-top: 4px; }
.upload-cta{ flex: 0 0 auto; }
.upload-links{ margin-top: 8px; }
.link{
  background:none;
  border:none;
  color: rgba(191,219,254,1);
  font-weight: 900;
  cursor:pointer;
  padding:0;
}
.link:hover{ text-decoration:underline; }

/* Bulk EA toggle */
.ea-bulk-toggle{
  margin-bottom: 14px;
  padding: 14px 16px;
  border-radius: 18px;
  border: 1px solid rgba(34,197,94,.28);
  background: linear-gradient(135deg, rgba(34,197,94,.10), rgba(34,197,94,.05));
}
.ea-bulk-inner{
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:12px;
  flex-wrap:wrap;
}
.ea-bulk-checkbox{ display:flex; gap:12px; align-items:flex-start; flex:1; min-width: 240px; }
.ea-bulk-checkbox input{ width:20px; height:20px; margin-top: 3px; accent-color: var(--success); }
.ea-bulk-label label{ font-weight: 900; cursor:pointer; display:block; }
.ea-bulk-label p{ margin-top: 4px; font-size: 12px; color: var(--slate-400); line-height: 1.4; }
.ea-bulk-label a{ color: rgba(191,219,254,1); font-weight: 900; }

.ea-bulk-savings{
  text-align:right;
  padding: 10px 12px;
  border-radius: 16px;
  border: 1px solid rgba(34,197,94,.28);
  background: rgba(34,197,94,.12);
  min-width: 160px;
}
.ea-savings-label{ font-size: 11px; color: var(--slate-400); font-weight: 900; text-transform: uppercase; letter-spacing: .12em; }
.ea-savings-amount{ font-size: 18px; font-weight: 900; color: rgba(134,239,172,1); margin-top: 4px; }

/* Metrics + charts */
.metrics-grid{
  display:grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}
.metric-tile{
  border-radius: 18px;
  border: 1px solid rgba(51,65,85,.55);
  background: rgba(2,6,23,.35);
  padding: 14px;
}
.metric-tile.danger{
  border-color: rgba(239,68,68,.35);
  background: rgba(239,68,68,.06);
}
.tile-label{ font-size: 12px; color: var(--slate-400); font-weight: 900; }
.tile-value{ font-size: 20px; font-weight: 900; margin-top: 6px; }

.charts-grid{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 12px;
}
.chart-card{ padding: 14px; }
.chart-title{ font-weight: 900; margin-bottom: 10px; }
.chart-container{ height: 280px; }

/* Tables */
.table-wrap{ width:100%; overflow:auto; border-radius: 18px; border: 1px solid rgba(51,65,85,.55); }
.table{ width:100%; border-collapse: collapse; min-width: 920px; }
.table thead th{
  text-align:left;
  font-size: 12px;
  color: var(--slate-400);
  font-weight: 900;
  padding: 12px 12px;
  border-bottom: 1px solid rgba(51,65,85,.55);
  background: rgba(2,6,23,.35);
  position: sticky;
  top: 0;
  z-index: 1;
}
.table tbody td{
  padding: 12px 12px;
  border-bottom: 1px solid rgba(51,65,85,.35);
  font-size: 13px;
  vertical-align: top;
}
.row-clickable{ cursor:pointer; }
.badge{
  display:inline-flex; align-items:center; gap:6px;
  padding: 6px 10px; border-radius: 999px;
  font-size: 11px; font-weight: 900;
  border: 1px solid rgba(51,65,85,.55);
  background: rgba(2,6,23,.35);
}
.badge.danger{ border-color: rgba(239,68,68,.35); background: rgba(239,68,68,.08); color: rgba(252,165,165,1); }
.badge.warning{ border-color: rgba(245,158,11,.35); background: rgba(245,158,11,.08); color: rgba(253,230,138,1); }
.badge.success{ border-color: rgba(34,197,94,.35); background: rgba(34,197,94,.08); color: rgba(134,239,172,1); }
.badge.neutral{ border-color: rgba(148,163,184,.35); background: rgba(148,163,184,.08); color: rgba(226,232,240,1); }

.filters{
  display:grid;
  grid-template-columns: 1fr 260px;
  gap: 12px;
  margin-bottom: 12px;
}

/* Settings */
.settings-grid{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
.settings-card{
  border: 1px solid rgba(51,65,85,.55);
  background: rgba(2,6,23,.25);
  border-radius: 22px;
  overflow:hidden;
}
.settings-card.future{ border-color: rgba(239,68,68,.35); }
.settings-card-header{
  padding: 14px 14px;
  border-bottom: 1px solid rgba(51,65,85,.45);
  background: rgba(15,23,42,.45);
}
.settings-card.future .settings-card-header{ background: rgba(239,68,68,.06); }
.settings-title{ font-weight: 900; }
.settings-subtitle{ margin-top: 4px; font-size: 12px; color: var(--slate-400); }
.settings-card-body{ padding: 14px; }

/* Privacy badge */
.privacy-badge{
  position: fixed;
  top: 14px;
  right: 14px;
  z-index: 1000;
  display:flex;
  align-items:center;
  gap:10px;
  padding: 10px 12px;
  border-radius: 999px;
  border: 1px solid rgba(34,197,94,.35);
  background: rgba(34,197,94,.12);
  box-shadow: 0 10px 30px rgba(0,0,0,.25);
  cursor: help;
}
.privacy-badge i{ color: rgba(134,239,172,1); }
.privacy-tooltip{
  display:none;
  position:absolute;
  top: 46px;
  right: 0;
  width: 320px;
  padding: 12px 12px;
  border-radius: 14px;
  border: 1px solid rgba(51,65,85,.55);
  background: rgba(15,23,42,.95);
  color: var(--muted);
}
.privacy-badge:hover .privacy-tooltip{ display:block; }

/* Modals */
.modal{ position: fixed; inset: 0; z-index: 2000; display:flex; align-items:center; justify-content:center; padding: 14px; }
.modal.hidden{ display:none; }
.modal-backdrop{ position:absolute; inset:0; background: rgba(0,0,0,.55); }
.modal-card{
  position: relative;
  width: min(760px, 100%);
  border-radius: 22px;
  border: 1px solid rgba(51,65,85,.65);
  background: rgba(15,23,42,.92);
  box-shadow: var(--shadow);
  overflow:hidden;
}
.modal-header{
  display:flex;
  justify-content:space-between;
  align-items:flex-start;
  gap:12px;
  padding: 16px;
  border-bottom: 1px solid rgba(51,65,85,.55);
}
.modal-title{ font-weight: 900; }
.modal-subtitle{ font-size: 12px; color: var(--slate-400); margin-top: 4px; }
.modal-body{ padding: 16px; }
.modal-footer{
  padding: 14px 16px;
  border-top: 1px solid rgba(51,65,85,.55);
  display:flex;
  justify-content:flex-end;
  gap:10px;
  flex-wrap:wrap;
}

.steps{ margin-left: 18px; color: var(--muted); }
.steps li{ margin: 8px 0; }
.tips{ margin-top: 14px; padding: 12px 14px; border-radius: 18px; border: 1px solid rgba(245,158,11,.35); background: rgba(245,158,11,.08); color: var(--muted); }
.tips-title{ font-weight: 900; margin-bottom: 6px; color: rgba(253,230,138,1); }
.tips ul{ margin-left: 18px; }

.error-summary{ font-weight: 900; margin-bottom: 10px; }
.columns-check{ display:grid; grid-template-columns: 1fr 1fr; gap:8px; margin-top: 10px; }
.col-item{ padding: 10px 12px; border-radius: 16px; border: 1px solid rgba(51,65,85,.55); background: rgba(2,6,23,.35); display:flex; align-items:center; justify-content:space-between; gap:10px; }
.col-item.good{ border-color: rgba(34,197,94,.35); background: rgba(34,197,94,.08); }
.col-item.bad{ border-color: rgba(239,68,68,.35); background: rgba(239,68,68,.08); }
.code-block{ display:block; white-space: pre-wrap; padding: 12px; border-radius: 16px; border: 1px solid rgba(51,65,85,.55); background: rgba(2,6,23,.35); margin-top: 6px; font-size: 12px; color: rgba(226,232,240,1); }

/* Sidebar overlay & mobile */
.sidebar-overlay{
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.55);
  z-index: 900;
}

/* Print styling */
.print-only{ display:none; }
@media print{
  .no-print{ display:none !important; }
  .print-only{ display:block !important; }

  body{ background: white !important; color: black !important; }
  .main{ padding: 0 !important; }
  .page{ display:block !important; }
  .card, .table-wrap{ box-shadow:none !important; background: white !important; border-color: #ddd !important; }
  .table{ min-width: 0 !important; }
  .table thead th{ background: #f5f5f5 !important; color: #333 !important; border-bottom: 1px solid #ddd !important; }
  .table tbody td{ border-bottom: 1px solid #eee !important; color:#111 !important; }
  .badge{ border-color:#ddd !important; background:#f6f6f6 !important; color:#111 !important; }
  .chart-container{ height: 220px !important; }
  .print-header{
    padding: 12mm 12mm 6mm 12mm;
    border-bottom: 1px solid #ddd;
  }
  .print-title{ font-size: 16pt; font-weight: 800; }
  .print-meta{ margin-top: 3mm; font-size: 10pt; color: #555; }
  .print-footer{ padding: 6mm 12mm 0 12mm; }
  @page{ size: A4; margin: 12mm; }
}

/* Responsive */
@media (max-width: 1024px){
  .grid-2{ grid-template-columns: 1fr; }
  .metrics-grid{ grid-template-columns: repeat(2, 1fr); }
  .charts-grid{ grid-template-columns: 1fr; }
  .settings-grid{ grid-template-columns: 1fr; }
  .filters{ grid-template-columns: 1fr; }
}

@media (max-width: 768px){
  .mobile-only{ display:inline-flex; }
  .sidebar{
    position: fixed;
    left:0;
    top:0;
    transform: translateX(-105%);
    transition: transform .18s ease;
    z-index: 1000;
  }
  .sidebar.open{ transform: translateX(0); }
  .topbar{ flex-direction: column; align-items: stretch; }
  .topbar .right{ display:grid; grid-template-columns: 1fr 1fr 1fr; gap:10px; }
  .form-row{ grid-template-columns: 1fr; }
  .breakdown-grid{ grid-template-columns: 1fr; }
  .upload-inner{ flex-direction: column; align-items: stretch; text-align:center; }
  .upload-cta{ width:100%; }
  .upload-cta .btn{ width:100%; }
  .privacy-badge{ top: 10px; right: 10px; }
  .privacy-tooltip{ width: 260px; }
}

@media (max-width: 420px){
  .topbar .right{ grid-template-columns: 1fr; }
  .impact-amount{ font-size: 26px; }
}


/* Notices */
.notice {
  border: 1px solid rgba(239, 68, 68, 0.35);
  background: rgba(239, 68, 68, 0.08);
  padding: 10px 12px;
  border-radius: 12px;
  font-size: 12px;
  color: rgba(255, 255, 255, 0.9);
  margin: 10px 0 0 0;
}
.notice strong { font-weight: 800; }