/* =====================================================================
   NAVTTC M&E Portal — application styles (self-contained, no framework)
   ===================================================================== */
:root{
  --bg:#f4f6fb; --surface:#fff; --surface-2:#f8fafc;
  --border:#e3e8f0; --text:#1e293b; --muted:#64748b;
  --primary:#1d4ed8; --primary-d:#1e40af; --primary-l:#eff4ff;
  --green:#059669; --red:#dc2626; --amber:#d97706; --blue:#2563eb;
  --radius:10px; --radius-sm:7px;
  --shadow:0 1px 3px rgba(15,23,42,.06),0 1px 2px rgba(15,23,42,.04);
  --sidebar-w:248px;
}
@media (prefers-color-scheme: dark){
  :root{ --bg:#0f172a; --surface:#111c33; --surface-2:#0d1729; --border:#1f2d47;
    --text:#e2e8f0; --muted:#94a3b8; --primary:#3b82f6; --primary-d:#2563eb;
    --primary-l:#13294d; --shadow:0 1px 3px rgba(0,0,0,.4); }
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{background:var(--bg);color:var(--text);font-family:'Segoe UI',Inter,system-ui,-apple-system,Arial,sans-serif;font-size:14px;line-height:1.5}
a{color:var(--primary);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3,h4{margin:0 0 .5rem;font-weight:650;line-height:1.25}
.muted{color:var(--muted)}
.text-right{text-align:right}
.text-center{text-align:center}
.nowrap{white-space:nowrap}

/* ---------------- app shell ---------------- */
.shell{display:grid;grid-template-columns:var(--sidebar-w) 1fr;min-height:100vh}
.sidebar{background:var(--surface);border-right:1px solid var(--border);padding:18px 14px;position:sticky;top:0;height:100vh;overflow:auto}
.brand{display:flex;align-items:center;gap:10px;padding:4px 8px 18px}
.brand .logo{width:34px;height:34px;border-radius:8px;background:linear-gradient(135deg,var(--primary),#6366f1);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:15px}
.brand .t{font-weight:700;font-size:15px;line-height:1.1}
.brand .s{font-size:11px;color:var(--muted)}
.nav-section{font-size:11px;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);margin:16px 8px 6px}
.nav a{display:flex;align-items:center;gap:10px;padding:9px 10px;border-radius:var(--radius-sm);color:var(--text);font-weight:500;margin-bottom:2px}
.nav a:hover{background:var(--surface-2);text-decoration:none}
.nav a.active{background:var(--primary-l);color:var(--primary)}
.nav a .ico{width:18px;height:18px;flex:0 0 18px}
.nav .badge-mini{margin-left:auto;background:var(--primary);color:#fff;border-radius:20px;font-size:11px;padding:1px 8px}
.main{min-width:0;display:flex;flex-direction:column}
.topbar{background:var(--surface);border-bottom:1px solid var(--border);padding:14px 22px;display:flex;align-items:center;gap:14px;position:sticky;top:0;z-index:20}
.topbar .title{font-size:18px;font-weight:650}
.topbar .spacer{flex:1}
.content{padding:22px;max-width:1320px;width:100%}
.menu-btn{display:none;background:none;border:1px solid var(--border);border-radius:8px;padding:6px 10px;cursor:pointer;color:var(--text)}

/* ---------------- cards ---------------- */
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);margin-bottom:18px}
.card-header{padding:14px 18px;border-bottom:1px solid var(--border);display:flex;align-items:center;gap:10px}
.card-header h3{margin:0;font-size:15px}
.card-header .spacer{flex:1}
.card-body{padding:18px}
.card-body.tight{padding:0}

/* ---------------- buttons ---------------- */
.btn{display:inline-flex;align-items:center;gap:6px;border:1px solid var(--border);background:var(--surface);color:var(--text);padding:8px 14px;border-radius:var(--radius-sm);font-size:13px;font-weight:550;cursor:pointer;text-decoration:none;line-height:1.2;transition:.12s}
.btn:hover{text-decoration:none;filter:brightness(.98)}
.btn:disabled{opacity:.55;cursor:not-allowed}
.btn-primary{background:var(--primary);border-color:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-d)}
.btn-danger{background:var(--red);border-color:var(--red);color:#fff}
.btn-success{background:var(--green);border-color:var(--green);color:#fff}
.btn-ghost{background:transparent;border-color:transparent;color:var(--muted)}
.btn-sm{padding:5px 10px;font-size:12px}
.btn-lg{padding:11px 20px;font-size:15px}
.row-actions{display:flex;gap:8px;flex-wrap:wrap}

/* ---------------- forms ---------------- */
.field{margin-bottom:14px}
.field > label{display:block;font-weight:600;font-size:13px;margin-bottom:5px}
.field .req{color:var(--red)}
.field .help{font-size:12px;color:var(--muted);margin-top:4px}
.field .field-head{display:flex;align-items:center;gap:8px;margin-bottom:5px}
.field .field-head label{margin:0;flex:0 1 auto}
input[type=text],input[type=number],input[type=email],input[type=password],input[type=date],input[type=tel],input[type=file],select,textarea{
  width:100%;padding:9px 11px;border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--surface);color:var(--text);font-size:13px;font-family:inherit}
input:focus,select:focus,textarea:focus{outline:2px solid var(--primary-l);border-color:var(--primary)}
textarea{min-height:84px;resize:vertical}
input[type=checkbox],input[type=radio]{width:auto;margin-right:6px}
.option-row{display:flex;flex-wrap:wrap;gap:14px;padding:4px 0}
.option-row label{display:inline-flex;align-items:center;font-weight:500;font-size:13px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 18px}
.form-grid .span-2{grid-column:1/-1}
.readonly input,.readonly textarea,.readonly select{background:var(--surface-2)!important;color:var(--muted)}
.err-text{color:var(--red);font-size:12px;margin-top:4px}
input.invalid,textarea.invalid{border-color:var(--red)}

/* low-confidence highlight from OCR */
.low-conf input,.low-conf textarea,.low-conf select{background:#fff7ed!important;border-color:#fb923c}
@media (prefers-color-scheme: dark){ .low-conf input,.low-conf textarea,.low-conf select{background:#2a1a08!important} }

/* ---------------- badges ---------------- */
.badge{display:inline-block;padding:2px 9px;border-radius:20px;font-size:11px;font-weight:600;color:#fff;background:var(--muted)}
.conf{display:inline-block;padding:1px 7px;border-radius:6px;font-size:11px;font-weight:650;background:var(--surface-2);border:1px solid var(--border);color:var(--muted);margin-left:6px}
.conf-high{color:var(--green);border-color:#bbf7d0}
.conf-low{color:var(--amber);background:#fff7ed;border-color:#fed7aa}
@media (prefers-color-scheme: dark){ .conf-low{background:#2a1a08} }

/* ---------------- tables ---------------- */
.table{width:100%;border-collapse:collapse;font-size:13px}
.table th,.table td{padding:10px 12px;text-align:left;border-bottom:1px solid var(--border);vertical-align:top}
.table th{font-size:11px;text-transform:uppercase;letter-spacing:.04em;color:var(--muted);background:var(--surface-2)}
.table tbody tr:hover{background:var(--surface-2)}
.table .actions{white-space:nowrap;text-align:right}
.table .actions a,.table .actions button{margin-left:6px}

/* editable table */
.edit-table{width:100%;border-collapse:collapse;font-size:12.5px}
.edit-table th,.edit-table td{padding:5px;border:1px solid var(--border)}
.edit-table th{background:var(--surface-2);color:var(--muted);font-size:11px;text-transform:uppercase}
.edit-table input,.edit-table select{padding:6px 7px;border:1px solid transparent;border-radius:5px;background:transparent;font-size:12.5px;width:100%}
.edit-table input:focus{border-color:var(--primary);background:var(--surface)}
.edit-table .row-del{width:30px;text-align:center}

/* ---------------- grid / utilities ---------------- */
.grid{display:grid;gap:16px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.flex{display:flex;align-items:center}
.flex.between{justify-content:space-between}
.flex.wrap{flex-wrap:wrap}
.gap{gap:10px}
.gap-sm{gap:6px}
.mt{margin-top:14px}.mt-lg{margin-top:22px}
.mb{margin-bottom:14px}
.stat{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:16px;box-shadow:var(--shadow)}
.stat .n{font-size:26px;font-weight:700;line-height:1}
.stat .l{color:var(--muted);font-size:12.5px;margin-top:6px;text-transform:uppercase;letter-spacing:.04em}
.stat .delta{font-size:12px;margin-top:4px}
.stat.ok .n{color:var(--green)} .stat.warn .n{color:var(--amber)} .stat.bad .n{color:var(--red)}

/* bars (dashboard mini-chart) */
.bars{display:flex;align-items:flex-end;gap:8px;height:120px;padding-top:10px}
.bars .bar{flex:1;background:linear-gradient(var(--primary),var(--primary-d));border-radius:6px 6px 0 0;min-height:4px;position:relative}
.bars .bar .lbl{position:absolute;bottom:-20px;left:0;right:0;text-align:center;font-size:11px;color:var(--muted)}
.bars .bar .v{position:absolute;top:-18px;left:0;right:0;text-align:center;font-size:11px;font-weight:600}

/* ---------------- alerts ---------------- */
.alert{padding:11px 14px;border-radius:var(--radius-sm);margin-bottom:14px;font-size:13px;border:1px solid transparent}
.alert-success{background:#ecfdf5;color:#065f46;border-color:#a7f3d0}
.alert-error{background:#fef2f2;color:#991b1b;border-color:#fecaca}
.alert-info{background:#eff6ff;color:#1e40af;border-color:#bfdbfe}
@media (prefers-color-scheme: dark){
  .alert-success{background:#0c2a1f;color:#6ee7b7}
  .alert-error{background:#2a1010;color:#fca5a5}
  .alert-info{background:#0d1f3d;color:#93c5fd}
}

/* ---------------- pagination ---------------- */
.pagination{display:flex;gap:6px;justify-content:center;margin-top:18px}
.pagination a,.pagination span{padding:6px 11px;border:1px solid var(--border);border-radius:7px;font-size:13px;background:var(--surface)}
.pagination a:hover{background:var(--surface-2);text-decoration:none}
.pagination .active{background:var(--primary);color:#fff;border-color:var(--primary)}

/* ---------------- split-pane OCR review ---------------- */
.ocr-split{display:grid;grid-template-columns:1fr 1.2fr;gap:16px;align-items:start}
.ocr-split .pane{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}
.ocr-split .pane-head{padding:10px 14px;border-bottom:1px solid var(--border);font-weight:600;font-size:13px;display:flex;align-items:center;gap:8px;background:var(--surface-2)}
.ocr-split .pane-body{padding:12px;max-height:78vh;overflow:auto}
.ocr-split embed,.ocr-split img,.ocr-split iframe{width:100%;height:70vh;border:0;border-radius:6px}

/* dropzone */
.drop{border:2px dashed var(--border);border-radius:var(--radius);padding:24px;text-align:center;color:var(--muted);background:var(--surface-2);cursor:pointer;transition:.15s}
.drop:hover,.drop.drag{border-color:var(--primary);color:var(--primary);background:var(--primary-l)}

.kv{display:grid;grid-template-columns:160px 1fr;gap:6px 12px;font-size:13px}
.kv dt{color:var(--muted)}
.kv dd{margin:0}

.empty{padding:36px;text-align:center;color:var(--muted)}
.tag{display:inline-block;background:var(--surface-2);border:1px solid var(--border);border-radius:6px;padding:2px 8px;font-size:12px}

/* ---------------- login ---------------- */
.auth-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#1e3a8a,#4f46e5 60%,#7c3aed);padding:20px}
.auth-card{width:100%;max-width:400px;background:var(--surface);border-radius:14px;box-shadow:0 20px 50px rgba(0,0,0,.3);padding:30px}
.auth-card .logo{width:48px;height:48px;border-radius:12px;background:linear-gradient(135deg,var(--primary),#6366f1);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:20px;margin:0 auto 14px}
.auth-card h1{text-align:center;font-size:20px}
.auth-card p.sub{text-align:center;color:var(--muted);font-size:13px;margin-bottom:20px}

/* responsive */
@media (max-width:920px){
  .shell{grid-template-columns:1fr}
  .sidebar{position:fixed;left:-260px;top:0;width:var(--sidebar-w);z-index:50;transition:.2s;box-shadow:0 0 40px rgba(0,0,0,.3)}
  .sidebar.open{left:0}
  .menu-btn{display:inline-block}
  .ocr-split{grid-template-columns:1fr}
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .grid-3{grid-template-columns:1fr}
  .form-grid{grid-template-columns:1fr}
  .content{padding:16px}
}
.backdrop{display:none;position:fixed;inset:0;background:rgba(0,0,0,.4);z-index:40}
.backdrop.show{display:block}