/* Modern light theme */
:root{
  --bg:#f5f6fb;
  --bg-alt:#e9ecf5;
  --card:#ffffff;
  --border:#e0e4ef;
  --border-strong:#cdd3e3;
  --text:#111827;
  --muted:#6b7280;
  --primary:#3056d3;
  --accent:#4cc0d0;
  --success:#10b981;
  --warn:#f59e0b;
  --danger:#ef4444;
  --shadow:0 25px 60px -30px rgba(15,23,42,.35);
  --radius-lg:18px;
  --radius-md:12px;
  --radius-sm:8px;
  --control-height:44px;
  --transition:all .2s ease;
}

*{ box-sizing:border-box }
body{
  margin:0;
  min-height:100vh;
  display:flex;
  flex-direction:column;
  background:radial-gradient(circle at top, rgba(76,192,208,.15), transparent 45%),
             radial-gradient(circle at 20% 20%, rgba(48,86,211,.18), transparent 55%),
             linear-gradient(180deg,#fdfdff,var(--bg));
  color:var(--text);
  font:14px/1.6 "Inter",ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial;
}
.container{ width:min(1100px, 100%); margin:0 auto; padding:0 24px; }

/* Hero & navigation */
.app-hero{ position:sticky; top:0; z-index:20; background:rgba(244,246,252,.95); backdrop-filter:blur(14px); border-bottom:1px solid rgba(255,255,255,.6); box-shadow:0 20px 40px -35px rgba(15,23,42,.4); }
.hero-inner{ display:flex; align-items:flex-start; justify-content:space-between; padding:14px 0 6px; gap:20px; flex-wrap:wrap; }
.brand-block{ display:flex; align-items:center; gap:16px; }
.hero-inner .brand-block{ flex:1 1 auto; min-width:240px; }
.logo{ width:55px; height:55px; border-radius:16px; background:conic-gradient(from 120deg,var(--primary),var(--accent),var(--primary)); box-shadow:0 10px 20px rgba(255, 255, 255, 0.25); }
.eyebrow{ text-transform:uppercase; letter-spacing:.2em; font-size:11px; color:var(--muted); margin:0 0 4px; }
.hero-block h1, h1{ margin:0; }
.hero-inner h1{ font-size:26px; margin:0 0 6px; }
.hero-copy{ margin:0; color:#4b5563; max-width:420px; }
.hero-stats{ display:flex; gap:10px; flex-wrap:wrap; }
.hero-chip{ background:#fff; border:1px solid rgba(255,255,255,.4); border-radius:var(--radius-md); padding:8px 12px; min-width:120px; display:flex; flex-direction:column; gap:2px; box-shadow:0 6px 18px rgba(15,23,42,.08); }
.hero-chip span{ font-size:11px; letter-spacing:.1em; color:var(--muted); }
.hero-chip strong{ font-size:14px; }
.topTabs{ display:flex; gap:12px; flex-wrap:wrap; }
.topTabs a{ text-decoration:none; padding:6px 14px; border-radius:var(--radius-md); border:1px solid transparent; color:var(--muted); font-weight:600; background:rgba(255,255,255,.6); cursor:pointer; transition:var(--transition); }
.hero-nav{ margin-left:auto; }
.hero-nav a{ white-space:nowrap; }
.topTabs a:hover{ color:var(--text); border-color:rgba(48,86,211,.2); }
.topTabs a.active{ color:#fff; background:linear-gradient(135deg,var(--primary),#2232a6); border-color:transparent; box-shadow:0 10px 20px rgba(48,86,211,.35); }

.app-main{ padding:32px 0 48px; flex:1 0 auto; }
.panel-grid{ display:grid; gap:24px; grid-template-columns:repeat(auto-fit,minmax(320px,1fr)); align-items:start; }

#resultSec{ display:flex; flex-direction:column; }
#resultSec .panel-body{ flex:1; display:flex; flex-direction:column; }
#resultSec .query-results{ flex:1; display:flex; flex-direction:column; gap:14px; min-height:0; }
#resultSec .tableWrap{ flex:1; min-height:0; overflow:auto; }

/* Panels */
.card{ background:var(--card); border-radius:var(--radius-lg); border:1px solid rgba(255,255,255,.7); box-shadow:var(--shadow); padding:24px; }
.panel{ display:flex; flex-direction:column; gap:18px; }
.panel h2, h2{ font-size:20px; margin:0; line-height:1.3; color:var(--text); letter-spacing:.02em; }
.panel-header{ display:flex; justify-content:space-between; gap:16px; align-items:flex-start; flex-wrap:wrap; }
.panel-desc{ margin:4px 0 0; color:#4b5563; }
.panel-body{ width:100%; }
.stack{ display:flex; flex-direction:column; }
.gap-16{ gap:16px; }
.form-stack{ gap:10px; }
.cluster{ display:flex; gap:16px; flex-wrap:wrap; }
.cluster.between{ justify-content:space-between; align-items:center; }

.row{ display:flex; gap:14px; flex-wrap:wrap; }
.field{ display:flex; flex-direction:column; gap:4px; min-width:220px; flex:1 1 148px; }
.stack > .field{ flex:0 0 auto; width:100%; }
label{ font-size:12px; color:var(--muted); }
input, textarea, select{ width:100%; border:1px solid var(--border); border-radius:var(--radius-md); background:#fdfdff; color:var(--text); padding:12px 14px; font:inherit; transition:var(--transition); }
input{ height:var(--control-height); }
input:focus, textarea:focus, select:focus{ border-color:rgba(48,86,211,.7); box-shadow:0 0 0 3px rgba(48,86,211,.15); outline:none; }
textarea{ min-height:120px; resize:vertical; }
.field small{ color:var(--muted); display:block; margin-top:2px; line-height:1.2; }
.field small:empty{ display:none; }
.input-error{ border-color:var(--danger)!important; box-shadow:0 0 0 3px rgba(239,68,68,.15)!important; }

.btns{ display:flex; gap:12px; flex-wrap:wrap; }
.btn{ border:1px solid var(--border); border-radius:var(--radius-md); padding:0 18px; height:var(--control-height); display:inline-flex; align-items:center; justify-content:center; gap:8px; font-weight:600; cursor:pointer; background:#f2f4ff; color:#1f2937; transition:var(--transition); }
.btn:hover{ filter:brightness(1.03); }
.btn:active{ transform:translateY(1px); }
.btn.primary{ background:linear-gradient(135deg,var(--primary),#1f3bb3); color:#fff; border-color:transparent; box-shadow:0 15px 30px -20px rgba(48,86,211,.8); }
.btn:disabled{ opacity:.55; cursor:not-allowed; box-shadow:none; }

.split-btn{ position:relative; display:inline-flex; align-items:stretch; }
.split-btn .btn{ border-radius:0; }
.split-btn .btn:first-child{ border-top-left-radius:var(--radius-md); border-bottom-left-radius:var(--radius-md); }
.split-btn .btn.split-toggle{ width:44px; padding:0; border-top-right-radius:var(--radius-md); border-bottom-right-radius:var(--radius-md); }
.dropdown-menu{ position:absolute; right:0; top:calc(var(--control-height) + 8px); min-width:260px; background:#fff; border:1px solid var(--border); border-radius:var(--radius-md); box-shadow:0 18px 40px rgba(15,23,42,.18); padding:6px; z-index:50; }
.dropdown-item{ width:100%; text-align:left; border:1px solid transparent; background:transparent; padding:10px 12px; border-radius:var(--radius-md); cursor:pointer; font:inherit; color:var(--text); }
.dropdown-item:hover{ background:#eef2ff; border-color:rgba(48,86,211,.15); }

.badge{ display:inline-flex; align-items:center; gap:6px; padding:0 12px; border-radius:999px; height:32px; font-size:12px; background:#eef0fb; border:1px solid transparent; color:var(--muted); }
.badge.success{ background:#ecfdf5; color:#03543f; border-color:rgba(16,185,129,.4); }
.badge.error{ background:#fef2f2; color:#991b1b; border-color:rgba(239,68,68,.4); }

.captcha{ display:flex; align-items:flex-end; gap:16px; flex-wrap:wrap; }
.captcha img{ height:var(--control-height); border-radius:var(--radius-md); border:1px solid var(--border); padding:4px; background:#fff; }

.query-block{ border:1px solid var(--border); border-radius:var(--radius-lg); padding:18px; background:#f9f9ff; display:flex; flex-direction:column; gap:14px; box-shadow:inset 0 0 0 1px rgba(48,86,211,.04); }
.query-block header{ display:flex; justify-content:space-between; gap:12px; align-items:flex-start; flex-wrap:wrap; }
.query-block h3{ margin:0; font-size:16px; }
.muted{ color:var(--muted); font-size:12px; }
.query-mode{ display:flex; gap:10px; flex-wrap:wrap; padding:8px 12px; border:1px dashed var(--border); border-radius:var(--radius-md); background:#fff; }
.mode-option{ display:inline-flex; align-items:center; gap:6px; font-size:12px; font-weight:600; color:#1f2937; }
.mode-option input{
  margin:0;
  accent-color:var(--primary);
  cursor:pointer;
  width:14px;
  height:14px;
}
.mode-option span{ display:inline-block; padding:5px 14px; border-radius:var(--radius-md); border:1px solid transparent; background:#f4f5fb; transition:var(--transition); cursor:pointer; }
.mode-option input:checked + span{ background:linear-gradient(135deg,var(--primary),#1f3bb3); color:#fff; box-shadow:0 6px 18px rgba(48,86,211,.3); }
.mode-fields{ display:flex; flex-direction:column; gap:10px; }
.single-action{ justify-content:flex-start; }
.status-panel{ display:flex; flex-direction:column; gap:18px; height:100%; }
.status-pane{ display:flex; flex-direction:column; gap:12px; }
.status-pane.hidden{ display:none; }
.status-pane pre{ flex:1; }
.query-results{ display:flex; flex-direction:column; gap:14px; }
.query-results .tableWrap{ border-radius:var(--radius-md); }
.results-header{ display:flex; justify-content:space-between; gap:12px; flex-wrap:wrap; align-items:flex-start; margin-bottom:12px; }
.results-header h3{ margin:0; font-size:16px; }
.results-header p{ margin:4px 0 0; max-width:360px; }
.empty-hint{ margin:12px 0 0; font-size:13px; color:var(--muted); }
.last-msg{ margin:0; font-size:12px; color:#4b5563; }

.tableWrap{ overflow:auto; border-radius:var(--radius-lg); border:1px solid var(--border); background:#fff; }
table{ width:100%; border-collapse:separate; border-spacing:0; }
thead th{ position:sticky; top:0; background:#eff1fb; color:#1f2937; font-size:13px; padding:9px 10px; text-align:left; border-bottom:1px solid var(--border); white-space:nowrap; }
tbody td{ padding:12px; border-bottom:1px solid var(--border); font-size:13px; }
tbody tr:nth-child(odd){ background:#fafbff; }
tbody tr:hover{ background:#eef2ff; }
tbody tr:last-child td{ border-bottom:none; }

pre{ background:#0f172a; color:#f8fafc; border-radius:var(--radius-lg); padding:18px; min-height:160px; overflow:auto; font-family:"JetBrains Mono",Consolas,monospace; border:1px solid rgba(15,23,42,.5); }

.help-grid{ display:grid; gap:18px; grid-template-columns:repeat(auto-fit,minmax(220px,1fr)); }
.help-grid article{ padding:16px; border-radius:var(--radius-md); border:1px solid var(--border); background:#fdfdff; box-shadow:inset 0 0 0 1px rgba(48,86,211,.02); }
.help-grid h3{ margin:0 0 8px; font-size:15px; }
.help-grid ul, .help-grid ol{ margin:0; padding-left:18px; color:#4b5563; }

.admin-tabs{ display:flex; gap:10px; flex-wrap:wrap; padding:10px 12px; border:1px dashed var(--border); border-radius:var(--radius-md); background:#fff; }
.admin-tab{ appearance:none; border:1px solid transparent; background:#f4f5fb; color:#1f2937; font:inherit; font-weight:700; cursor:pointer; padding:8px 14px; border-radius:var(--radius-md); transition:var(--transition); }
.admin-tab:hover{ border-color:rgba(48,86,211,.2); background:#eef2ff; }
.admin-tab.active{ background:linear-gradient(135deg,var(--primary),#1f3bb3); color:#fff; box-shadow:0 6px 18px rgba(48,86,211,.3); }

.about-grid{ display:grid; gap:18px; grid-template-columns:repeat(auto-fit,minmax(260px,1fr)); }
.about-grid article{ padding:16px; border-radius:var(--radius-md); border:1px solid var(--border); background:#fdfdff; box-shadow:inset 0 0 0 1px rgba(48,86,211,.02); }
.about-grid h3{ margin:0 0 8px; font-size:15px; }
.about-grid ul{ margin:0; padding-left:18px; color:#4b5563; }
.about-qr{ display:flex; align-items:center; justify-content:center; padding:12px; border-radius:var(--radius-md); background:#fff; border:1px dashed var(--border-strong); }
.about-qr img{ width:min(260px, 100%); height:auto; border-radius:12px; }

.app-footer{ border-top:1px solid var(--border); background:#f3f4fb; margin-top:auto; }
.footer-inner{ display:flex; justify-content:space-between; gap:12px; padding:18px 0; color:var(--muted); font-size:12px; flex-wrap:wrap; }

.hidden{ display:none !important; }

/* Scrollbars */
::-webkit-scrollbar{ width:10px; height:10px; }
::-webkit-scrollbar-track{ background:rgba(15,23,42,.05); border-radius:999px; }
::-webkit-scrollbar-thumb{ background:rgba(48,86,211,.35); border-radius:999px; }

@media (max-width:900px){
  .panel-grid{ grid-template-columns:1fr; }
  .hero-inner{ flex-direction:column; align-items:flex-start; }
  .hero-nav{ margin-left:0; }
}

@media (max-width:640px){
  .container{ padding:0 16px; }
  .btn{ width:100%; justify-content:center; }
  .cluster.between{ flex-direction:column; align-items:stretch; gap:12px; }
  .hero-inner h1{ font-size:22px; }
  .hero-chip{ flex:1 1 140px; }
  .tableWrap{ border-radius:var(--radius-md); }
}

@media (prefers-reduced-motion:reduce){
  *{ transition:none!important; }
}