:root{
  --bg:#0f172a; --panel:#ffffff; --ink:#1e293b; --muted:#64748b;
  --line:#e2e8f0; --brand:#2563eb; --brand-d:#1d4ed8;
  --ok:#16a34a; --warn:#d97706; --err:#dc2626;
  --warn-bg:#fef3c7; --err-bg:#fee2e2; --ok-bg:#dcfce7;
  --body-bg:#f1f5f9; --input-bg:#ffffff; --hover-bg:#f8fafc; --chip-bg:#f1f5f9;
  --radius:10px; --shadow:0 1px 3px rgba(15,23,42,.08),0 1px 2px rgba(15,23,42,.06);
}
html[data-theme="dark"]{
  --panel:#1e293b; --ink:#e5e7eb; --muted:#94a3b8; --line:#334155;
  --brand:#3b82f6; --brand-d:#2563eb;
  --warn-bg:#3f2d0a; --err-bg:#3f1010; --ok-bg:#08301c;
  --body-bg:#0b1220; --input-bg:#0f172a; --hover-bg:#243244; --chip-bg:#334155;
  --shadow:0 1px 3px rgba(0,0,0,.4);
}
*{box-sizing:border-box}
body{margin:0;font-family:'Roboto',-apple-system,Segoe UI,system-ui,sans-serif;color:var(--ink);
  background:var(--body-bg);line-height:1.5}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}

/* Top bar */
.topbar{display:flex;align-items:center;gap:24px;background:var(--bg);color:#fff;
  padding:0 20px;height:56px;box-shadow:var(--shadow)}
.brand{color:#fff;font-weight:500;font-size:18px}
.brand:hover{text-decoration:none;opacity:.9}
.mainnav{display:flex;gap:4px;margin-left:8px}
.mainnav a{color:#cbd5e1;padding:8px 12px;border-radius:8px;font-size:14px}
.mainnav a:hover{color:#fff;background:rgba(255,255,255,.08);text-decoration:none}
.userbox{margin-left:auto;display:flex;align-items:center;gap:12px;font-size:14px;color:#cbd5e1}

main.app{max-width:1080px;margin:24px auto;padding:0 20px}
main.guest{max-width:400px;margin:8vh auto;padding:0 20px}
.foot{text-align:center;color:var(--muted);font-size:13px;padding:28px 0}

/* Cards / panels */
.panel{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow)}
.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:20px;margin-bottom:20px}
.page-head{display:flex;align-items:center;justify-content:space-between;margin:4px 0 20px}
.page-head h1{font-size:22px;font-weight:500;margin:0}
.crumbs{color:var(--muted);font-size:13px;margin-bottom:6px}

/* Buttons */
.btn{display:inline-flex;align-items:center;gap:6px;cursor:pointer;border:1px solid transparent;
  background:var(--brand);color:#fff;padding:9px 16px;border-radius:8px;font-size:14px;
  font-weight:500;line-height:1;text-decoration:none}
.btn:hover{background:var(--brand-d);text-decoration:none}
.btn-sm{padding:6px 11px;font-size:13px}
.btn-ghost{background:transparent;border-color:transparent;color:inherit}
.btn-ghost:hover{background:rgba(255,255,255,.12)}
.btn-outline{background:var(--input-bg);border-color:var(--line);color:var(--ink)}
.btn-outline:hover{background:var(--hover-bg);border-color:#cbd5e1}
.btn-danger{background:var(--err)}
.btn-danger:hover{background:#b91c1c}

/* Stats */
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:16px;margin-bottom:20px}
.stat{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:18px 20px}
.stat .n{font-size:30px;font-weight:500}
.stat .l{color:var(--muted);font-size:13px;text-transform:uppercase;letter-spacing:.04em}

/* Tables */
table{width:100%;border-collapse:collapse;font-size:14px}
th,td{text-align:left;padding:11px 12px;border-bottom:1px solid var(--line);vertical-align:middle}
th{color:var(--muted);font-weight:500;font-size:12px;text-transform:uppercase;letter-spacing:.03em}
tbody tr:hover,tbody tr:hover{background:var(--hover-bg)}
tr:last-child td{border-bottom:none}
.plate{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-weight:600;letter-spacing:.5px;
  background:var(--chip-bg);border:1px solid var(--line);border-radius:6px;padding:2px 8px;display:inline-block}
.muted{color:var(--muted)}
.right{text-align:right}
.nowrap{white-space:nowrap}

/* Badges */
.badge{display:inline-block;font-size:12px;padding:2px 9px;border-radius:999px;background:var(--chip-bg);
  color:var(--muted);border:1px solid var(--line)}
.badge-warn{background:var(--warn-bg);color:#92400e;border-color:#fcd34d}
.badge-expired{background:var(--err-bg);color:#991b1b;border-color:#fca5a5}
.pill{font-size:12px;padding:2px 8px;border-radius:6px;background:#eef2ff;color:#3730a3}

/* Forms */
form .grid{display:grid;grid-template-columns:1fr 1fr;gap:14px 18px}
form .grid .full{grid-column:1 / -1}
.field{display:flex;flex-direction:column;gap:5px;margin-bottom:2px}
.field label{font-size:13px;color:var(--muted);font-weight:500}
.field input,.field select,.field textarea{font:inherit;padding:9px 11px;border:1px solid var(--line);
  border-radius:8px;background:var(--input-bg);color:var(--ink);width:100%}
.toolbar input[type=search]{background:var(--input-bg);color:var(--ink)}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(37,99,235,.12)}
.field textarea{min-height:70px;resize:vertical}
.form-actions{display:flex;gap:10px;align-items:center;margin-top:18px}
fieldset{border:1px solid var(--line);border-radius:var(--radius);padding:16px 18px;margin:0 0 18px}
legend{padding:0 8px;color:var(--muted);font-size:13px;font-weight:500;text-transform:uppercase;letter-spacing:.03em}
.section-title{font-size:15px;font-weight:500;margin:0 0 12px;color:var(--ink)}

/* Flash */
.flash{padding:11px 15px;border-radius:8px;margin-bottom:16px;font-size:14px;border:1px solid}
.flash-success{background:var(--ok-bg);border-color:#86efac;color:#166534}
.flash-error{background:var(--err-bg);border-color:#fca5a5;color:#991b1b}

/* Login */
.login-card{padding:28px}
.login-card h1{font-size:20px;margin:0 0 4px;text-align:center}
.login-card .sub{color:var(--muted);text-align:center;margin:0 0 22px;font-size:14px}

/* Toolbar */
.toolbar{display:flex;gap:10px;align-items:center;margin-bottom:16px}
.toolbar form{display:flex;gap:8px;flex:1}
.toolbar input[type=search]{flex:1;padding:9px 12px;border:1px solid var(--line);border-radius:8px}

.empty{text-align:center;color:var(--muted);padding:36px 10px}
.def{display:grid;grid-template-columns:150px 1fr;gap:8px 16px;font-size:14px}
.def dt{color:var(--muted)}
.def dd{margin:0}
.checkline{display:flex;align-items:center;gap:8px}
.checkline input{width:auto}
/* --- Mobile / responsive --- */
@media(max-width:860px){
  .topbar{height:auto;flex-wrap:wrap;padding:8px 12px;gap:8px}
  .brand{font-size:16px}
  .mainnav{order:3;width:100%;overflow-x:auto;flex-wrap:nowrap;gap:2px;padding-bottom:2px;
    -webkit-overflow-scrolling:touch;scrollbar-width:none}
  .mainnav::-webkit-scrollbar{display:none}
  .mainnav a{white-space:nowrap;padding:7px 11px}
  .userbox{margin-left:auto;gap:8px;flex-wrap:wrap}
}
@media(max-width:640px){
  form .grid{grid-template-columns:1fr !important}
  .def{grid-template-columns:1fr}
  .hide-sm{display:none}
  main.app{margin:12px auto;padding:0 12px}
  .page-head{flex-wrap:wrap;gap:10px}
  .page-head h1{font-size:19px}
  .card{padding:15px;overflow-x:auto}
  .card[style*="overflow:hidden"]{overflow-x:auto !important}
  table{font-size:13px}
  th,td{padding:9px 8px}
  .form-actions{flex-wrap:wrap}
  .form-actions .btn{flex:1;justify-content:center}
  .toolbar{flex-wrap:wrap}
  .toolbar form{flex:1 1 100%}
  .btn{padding:10px 15px}   /* larger tap targets */
}
/* Safe-area padding for notched phones in standalone PWA mode */
@media(display-mode:standalone){
  .topbar{padding-top:max(8px,env(safe-area-inset-top))}
  .foot{padding-bottom:max(28px,env(safe-area-inset-bottom))}
}

/* Calendar */
.cal{display:grid;grid-template-columns:repeat(7,1fr);gap:6px}
.cal-dow{font-size:11px;text-transform:uppercase;letter-spacing:.04em;color:var(--muted);text-align:center;padding:4px 0;font-weight:500}
.cal-cell{min-height:92px;border:1px solid var(--line);border-radius:8px;padding:4px;background:var(--input-bg);display:flex;flex-direction:column;gap:3px}
.cal-empty{background:var(--hover-bg);border-style:dashed}
.cal-today{border-color:var(--brand);box-shadow:0 0 0 2px rgba(37,99,235,.12)}
.cal-daynum{font-size:12px;font-weight:600;text-align:right}
.cal-daynum a{color:var(--ink);display:inline-block;min-width:20px;text-align:center;border-radius:5px}
.cal-daynum a:hover{background:var(--brand);color:#fff;text-decoration:none}
.cal-appt{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:11px;padding:2px 6px}
.cal-appt:hover{text-decoration:none;filter:brightness(.96)}
@media(max-width:640px){
  .cal-cell{min-height:60px}
  .cal-appt{font-size:0;padding:3px}
  .cal-appt:before{content:"•";font-size:14px}
}

/* Preference toggles (theme + language) */
.prefs{display:inline-flex;align-items:center;gap:2px}
.pref-btn{background:transparent;border:0;color:inherit;cursor:pointer;font-size:15px;padding:2px 5px;line-height:1;border-radius:5px}
.pref-btn:hover{background:rgba(255,255,255,.12)}
.pref-lang{cursor:pointer;font-size:12px;color:#94a3b8;padding:2px 5px;border-radius:4px;user-select:none}
.pref-lang:hover{color:#fff}
.pref-lang.on{color:#fff;background:rgba(255,255,255,.16);font-weight:600}
.foot .pref-btn{color:var(--muted)} .foot .pref-btn:hover{background:var(--hover-bg)}
.foot .pref-lang{color:var(--muted)} .foot .pref-lang.on{color:var(--ink);background:var(--chip-bg)}
.foot{display:flex;align-items:center;justify-content:center}

/* Print: clean worksheet layout */
@media print{
  body{background:#fff}
  .topbar,.foot,.no-print,.crumbs.no-print{display:none !important}
  main.app{max-width:none;margin:0;padding:0}
  .card{box-shadow:none;border:1px solid #ccc;break-inside:avoid}
  .no-print-link{color:inherit;text-decoration:none}
  a[href]:after{content:""}
}