:root{
  --bg:#f4f6fb;
  --card:#ffffff;
  --border:#d7deea;
  --border-strong:#b9c3d6;
  --text:#1b2437;
  --text-soft:#5c6a85;
  --accent:#3859e6;
  --accent-soft:#eaefff;
  --accent-dark:#2743bd;
  --green:#178a4c;
  --green-bg:#e4f7ec;
  --red:#c62f3f;
  --red-bg:#fdeaec;
  --amber:#b5760a;
  --amber-bg:#fdf1de;
  --shadow: 0 1px 2px rgba(20,30,60,.04), 0 8px 24px rgba(20,30,60,.06);
  --radius:14px;
}
@media (prefers-color-scheme: dark){
  :root{
    --bg:#12151f;
    --card:#1a1f2e;
    --border:#2b3247;
    --border-strong:#3a4260;
    --text:#e7ebf5;
    --text-soft:#98a3bf;
    --accent:#7d97ff;
    --accent-soft:#222b4a;
    --accent-dark:#a9b9ff;
    --green:#4fd489;
    --green-bg:#123424;
    --red:#ff8b95;
    --red-bg:#3a1c22;
    --amber:#f2c069;
    --amber-bg:#3a2c12;
    --shadow: 0 1px 2px rgba(0,0,0,.3), 0 8px 24px rgba(0,0,0,.35);
  }
}
*{box-sizing:border-box;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family: "Segoe UI", Inter, -apple-system, BlinkMacSystemFont, Roboto, Arial, sans-serif;
  -webkit-font-smoothing:antialiased;
}
.wrap{
  max-width:1180px;
  margin:0 auto;
  padding:32px 20px 80px;
}
header.top{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  margin-bottom:20px;
  flex-wrap:wrap;
}
header.top .title-block h1{
  margin:0 0 4px;
  font-size:24px;
  font-weight:700;
  letter-spacing:-.02em;
}
header.top .title-block p{
  margin:0;
  color:var(--text-soft);
  font-size:14px;
}
.badge-api{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:12px;
  font-weight:600;
  color:var(--text-soft);
  background:var(--accent-soft);
  padding:6px 12px;
  border-radius:999px;
  white-space:nowrap;
}
.badge-api::before{
  content:"";
  width:7px;height:7px;border-radius:50%;
  background:var(--text-soft);
}
.badge-api.ok{ color:var(--green); background:var(--green-bg); }
.badge-api.ok::before{ background:var(--green); }
.badge-api.err{ color:var(--red); background:var(--red-bg); }
.badge-api.err::before{ background:var(--red); }

.error-banner{
  background:var(--red-bg);
  color:var(--red);
  border:1px solid var(--red);
  border-radius:10px;
  padding:12px 16px;
  font-size:13.5px;
  margin-bottom:20px;
}

.auth-card{
  margin-bottom:20px;
}
.auth-row{
  display:flex;
  align-items:center;
  gap:10px;
  flex-wrap:wrap;
}
.auth-row input{
  flex:1;
  min-width:220px;
  padding:9px 12px;
  border-radius:9px;
  border:1px solid var(--border-strong);
  background:var(--bg);
  color:var(--text);
  font-size:13.5px;
  font-family: Consolas, "SF Mono", monospace;
}
.btn-ghost{
  background:transparent;
  border:1px solid var(--border-strong);
  color:var(--text-soft);
}
.auth-status{
  margin-top:10px;
  font-size:12.5px;
  color:var(--text-soft);
}
.auth-status.set{ color:var(--green); }
.auth-status.missing{ color:var(--amber); }

.upload-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:20px;
  margin-bottom:24px;
}
@media (max-width: 760px){ .upload-grid{ grid-template-columns:1fr; } }

.card{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  padding:20px;
}
.card h2{
  margin:0 0 4px;
  font-size:15px;
  font-weight:700;
}
.card .hint{
  margin:0 0 14px;
  font-size:12.5px;
  color:var(--text-soft);
}

.dropzone{
  position:relative;
  border:2px dashed var(--border-strong);
  border-radius:12px;
  padding:22px 16px;
  text-align:center;
  cursor:pointer;
  transition: border-color .15s ease, background .15s ease;
  background: transparent;
}
.dropzone:hover, .dropzone.dragover{
  border-color:var(--accent);
  background:var(--accent-soft);
}
.dropzone input[type=file]{
  position:absolute; inset:0; opacity:0; cursor:pointer;
}
.dropzone .icon{ font-size:26px; margin-bottom:6px; }
.dropzone .dz-title{ font-size:13.5px; font-weight:600; }
.dropzone .dz-sub{ font-size:12px; color:var(--text-soft); margin-top:2px; }

.file-loaded{
  margin-top:12px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  background:var(--accent-soft);
  border:1px solid var(--border);
  border-radius:10px;
  padding:10px 12px;
  font-size:13px;
}
.file-loaded .fname{
  font-weight:600;
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
}
.file-loaded .frows{ color:var(--text-soft); font-size:12px; }
.file-loaded button{
  border:none;
  background:none;
  color:var(--accent-dark);
  font-size:12.5px;
  font-weight:600;
  cursor:pointer;
  text-decoration:underline;
  white-space:nowrap;
}

.sheet-picker{
  margin-top:14px;
  border-top:1px dashed var(--border);
  padding-top:12px;
}
.sheet-picker .sp-title{
  font-size:12px;
  font-weight:700;
  text-transform:uppercase;
  letter-spacing:.04em;
  color:var(--text-soft);
  margin-bottom:8px;
}
.sheet-row{
  display:flex;
  align-items:center;
  gap:8px;
  padding:6px 8px;
  border-radius:8px;
  font-size:13px;
}
.sheet-row:hover{ background:var(--accent-soft); }
.sheet-row.disabled{ opacity:.5; }
.sheet-row label{ flex:1; cursor:pointer; }
.sheet-row .count{ color:var(--text-soft); font-size:12px; }

.stats-row{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:16px;
  margin:24px 0;
}
@media (max-width: 760px){ .stats-row{ grid-template-columns:repeat(2,1fr); } }
.stat-card{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  padding:16px 18px;
}
.stat-card .num{ font-size:26px; font-weight:800; letter-spacing:-.02em; }
.stat-card .lbl{ font-size:12.5px; color:var(--text-soft); margin-top:2px; }
.stat-card.ok .num{ color:var(--green); }
.stat-card.bad .num{ color:var(--red); }
.stat-card.pct .num{ color:var(--accent); }

.toolbar{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  flex-wrap:wrap;
  margin-bottom:14px;
}
.toolbar .left{ display:flex; align-items:center; gap:10px; flex-wrap:wrap; }

.search-box{
  position:relative;
}
.search-box input{
  width:240px;
  padding:9px 12px;
  border-radius:9px;
  border:1px solid var(--border-strong);
  background:var(--card);
  color:var(--text);
  font-size:13.5px;
}

.seg{
  display:inline-flex;
  background:var(--accent-soft);
  border-radius:9px;
  padding:3px;
  gap:2px;
}
.seg button{
  border:none;
  background:transparent;
  color:var(--text-soft);
  font-size:12.5px;
  font-weight:600;
  padding:7px 12px;
  border-radius:7px;
  cursor:pointer;
  transition:.15s;
}
.seg button.active{
  background:var(--card);
  color:var(--accent);
  box-shadow:0 1px 3px rgba(20,30,60,.15);
}

.btn{
  display:inline-flex;
  align-items:center;
  gap:8px;
  border:none;
  border-radius:9px;
  font-size:13.5px;
  font-weight:700;
  padding:10px 16px;
  cursor:pointer;
  transition:.15s transform ease, .15s box-shadow ease, .15s opacity ease;
}
.btn:active{ transform:translateY(1px); }
.btn:disabled{ opacity:.45; cursor:not-allowed; }
.btn-primary{
  background: var(--accent);
  color:#fff;
  box-shadow:0 4px 14px rgba(56,89,230,.35);
}
@media (prefers-color-scheme: dark){
  .btn-primary{ color:#0d1220; }
}

.table-wrap{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  overflow:auto;
  max-height:640px;
}
table{
  width:100%;
  border-collapse:collapse;
  font-size:13.5px;
}
thead th{
  position:sticky;
  top:0;
  background:var(--card);
  text-align:left;
  font-size:11.5px;
  text-transform:uppercase;
  letter-spacing:.04em;
  color:var(--text-soft);
  padding:12px 14px;
  border:1px solid var(--border);
  z-index:1;
}
tbody td{
  padding:9px 14px;
  border:1px solid var(--border);
  white-space:nowrap;
}
tbody td.email{ font-family: Consolas, "SF Mono", monospace; font-size:12.8px; }
tbody tr:nth-child(even){ background:rgba(120,140,180,.045); }
tbody tr:hover{ background:var(--accent-soft); }
td.idx{ color:var(--text-soft); width:1%; }

.chip{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 10px;
  border-radius:999px;
  font-size:12.5px;
  font-weight:700;
}
.chip.yes{ background:var(--green-bg); color:var(--green); }
.chip.no{ background:var(--red-bg); color:var(--red); }

.empty-state{
  text-align:center;
  padding:60px 20px;
  color:var(--text-soft);
  font-size:14px;
}
.empty-state .big{ font-size:34px; margin-bottom:10px; }

footer{
  margin-top:34px;
  text-align:center;
  font-size:12px;
  color:var(--text-soft);
}

.spinner{
  display:inline-block;
  width:13px;height:13px;
  border:2px solid rgba(255,255,255,.4);
  border-top-color:#fff;
  border-radius:50%;
  animation:spin .7s linear infinite;
  vertical-align:middle;
}
@keyframes spin{ to{ transform:rotate(360deg); } }

.loading-overlay{
  display:flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  padding:60px 20px;
  color:var(--text-soft);
  font-size:14px;
}
.loading-overlay .spinner{
  border-color: rgba(56,89,230,.25);
  border-top-color: var(--accent);
}