:root {
  --bg: #f4f6fb;
  --card: #ffffff;
  --text: #1f2937;
  --muted: #6b7280;
  --accent: #2563eb;
  --accent-dark: #1e4fd6;
  --border: #e5e7eb;
  --danger: #dc2626;
  --ok: #16a34a;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
}

.topbar {
  padding: 28px 0 12px;
  text-align: center;
}
.topbar h1 { margin: 0 0 6px; font-size: 26px; }
.subtitle { margin: 0 auto; max-width: 640px; color: var(--muted); font-size: 14px; }

.container {
  max-width: 1000px;
  margin: 20px auto 60px;
  padding: 0 16px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px 24px;
  box-shadow: 0 1px 3px rgba(0,0,0,.05);
}
.card h2 { margin: 0 0 14px; font-size: 17px; }

/* Upload */
.dropzone {
  border: 2px dashed #cbd5e1;
  border-radius: 10px;
  padding: 30px;
  text-align: center;
  cursor: pointer;
  transition: border-color .15s, background .15s;
}
.dropzone:hover, .dropzone.dragover { border-color: var(--accent); background: #eff6ff; }
.dropzone p { margin: 4px 0; }
.hint { color: var(--muted); font-size: 12.5px; }

.selected-file {
  margin-top: 10px;
  font-size: 14px;
  padding: 8px 12px;
  background: #f8fafc;
  border: 1px solid var(--border);
  border-radius: 8px;
}

.btn {
  margin-top: 12px;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 8px;
  padding: 10px 22px;
  font-size: 14.5px;
  cursor: pointer;
}
.btn:hover:not(:disabled) { background: var(--accent-dark); }
.btn:disabled { background: #9db4e8; cursor: not-allowed; }
.btn-ghost {
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--accent);
  margin-top: 0;
  padding: 7px 14px;
  font-size: 13px;
}
.btn-ghost:hover { background: #eff6ff; }

/* Row holding the Upload and Refresh actions in the upload card */
.upload-actions { display: flex; align-items: flex-start; gap: 10px; }
#reset-btn { margin-top: 12px; }

.status {
  margin-top: 14px;
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 14px;
  white-space: pre-wrap;
}
.status.ok { background: #f0fdf4; color: var(--ok); border: 1px solid #bbf7d0; }
.status.err { background: #fef2f2; color: var(--danger); border: 1px solid #fecaca; }
.status.info { background: #eff6ff; color: var(--accent-dark); border: 1px solid #bfdbfe; }
.hidden { display: none; }

/* Table */
.table-head { display: flex; align-items: center; justify-content: space-between; }
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--border); }
th {
  background: #f8fafc;
  font-size: 12.5px;
  text-transform: uppercase;
  letter-spacing: .04em;
  color: var(--muted);
}
tbody tr:hover { background: #f8fafc; }
td.num { color: var(--muted); }
td a { color: var(--accent); text-decoration: none; font-weight: 500; }
td a:hover { text-decoration: underline; }
.empty, .loading { text-align: center; color: var(--muted); padding: 26px 0 !important; }