:root {
  /* Brand blue, matching the Coal Connect Test Report. (Token names kept for
     stability; the values are blue.) */
  --green: #0a66c2;
  --green-2: #0b5aa8;
  --green-soft: #dbe7f3;
  --ink: #14202e;
  --muted: #5b6473;
  --line: #dce3ee;
  --bg: #f3f6fb;
  --card: #ffffff;
  --amber: #b45309;
  --radius: 10px;
  --shadow: 0 1px 3px rgba(0,0,0,.07), 0 1px 2px rgba(0,0,0,.04);
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
  font-size: 15px; line-height: 1.5; }
a { color: var(--green-2); text-decoration: none; }
a:hover { text-decoration: underline; }

/* Top bar */
.topbar { position: relative; display: flex; align-items: center; gap: 24px;
  background: var(--green); color: #fff; padding: 0 20px; height: 56px; }
.brand { display: flex; align-items: center; gap: 10px; color: #fff; font-weight: 600; }
.brand:hover { text-decoration: none; }
.brand-mark { display: inline-grid; place-items: center; width: 34px; height: 34px;
  background: #fff; color: var(--green); border-radius: 8px; }
.brand-mark svg { width: 24px; height: 24px; display: block; }
.brand-mark.big { width: 56px; height: 56px; }
.brand-mark.big svg { width: 40px; height: 40px; }
.menu { display: flex; align-items: center; gap: 24px; flex: 1; }

/* Coal Connect wordmark + honeycomb (report/sample pages) */
.logo { display: flex; align-items: center; gap: 10px; }
.logo svg { flex: 0 0 auto; }
.logo .name { font-weight: 700; color: var(--green); font-size: 16px; line-height: 1.08; }
.nav { display: flex; gap: 6px; }
.nav a { color: #cfe0f0; padding: 6px 12px; border-radius: 7px; }
.nav a:hover { background: rgba(255,255,255,.14); color: #fff; text-decoration: none; }
.user-box { margin-left: auto; display: flex; align-items: center; gap: 10px; font-size: 13px; }
.user-name { color: #eaf1f8; }
.logout { color: #cfe0f0; }

/* Hamburger button (mobile only) */
.nav-toggle { display: none; margin-left: auto; flex-direction: column; justify-content: center;
  gap: 5px; width: 40px; height: 40px; background: transparent; border: 0; cursor: pointer;
  padding: 8px; border-radius: 8px; }
.nav-toggle span { display: block; height: 2px; width: 100%; background: #fff; border-radius: 2px;
  transition: transform .2s, opacity .2s; }
.nav-toggle:hover { background: rgba(255,255,255,.12); }
.topbar.nav-open .nav-toggle span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.topbar.nav-open .nav-toggle span:nth-child(2) { opacity: 0; }
.topbar.nav-open .nav-toggle span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.container { max-width: 1040px; margin: 26px auto; padding: 0 20px; }
.footer { text-align: center; color: var(--muted); font-size: 12px; padding: 24px; }
.footer .ver { margin-left: 8px; opacity: .6; }

/* Headings */
.page-head { display: flex; align-items: center; justify-content: space-between;
  gap: 16px; margin-bottom: 18px; }
.page-head h1 { margin: 0; font-size: 24px; }
.section-title { font-size: 13px; text-transform: uppercase; letter-spacing: .6px;
  color: var(--muted); margin: 22px 0 10px; }
h2.section-title:first-child { margin-top: 0; }
.hint { font-weight: 400; text-transform: none; letter-spacing: 0; color: var(--muted);
  font-size: 12px; }

/* Buttons */
.btn { display: inline-block; padding: 8px 14px; border-radius: 8px; border: 1px solid var(--line);
  background: #fff; color: var(--ink); font-size: 14px; cursor: pointer; }
.btn:hover { background: #eef3fb; text-decoration: none; }
.btn.primary { background: var(--green); color: #fff; border-color: var(--green); }
.btn.primary:hover { background: var(--green-2); }
.btn.ghost { background: transparent; border-color: transparent; color: var(--muted); }
.btn.full { width: 100%; }
.btn.small { padding: 5px 10px; font-size: 13px; }
.btn-row, .btn.row { display: flex; gap: 8px; }
.btn-row { flex-wrap: wrap; }

/* Cards & stats */
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 20px; box-shadow: var(--shadow); margin-bottom: 18px; }
.stat-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-bottom: 8px; }
.stat-card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 18px 20px; box-shadow: var(--shadow); }
.stat-num { font-size: 32px; font-weight: 700; color: var(--green); }
.stat-label { color: var(--muted); font-size: 13px; }
.two-col { display: grid; grid-template-columns: 1fr 1.35fr; gap: 18px; align-items: start; }

/* Tables */
.table { width: 100%; border-collapse: collapse; background: var(--card);
  border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.table th { text-align: left; background: var(--green-soft); color: var(--green);
  font-size: 12px; text-transform: uppercase; letter-spacing: .4px; padding: 10px 12px; }
.table td { padding: 10px 12px; border-top: 1px solid var(--line); }
.table tr.clickable { cursor: pointer; }
.table tr.clickable:hover td { background: #eef4fb; }
.table.results th, .table.results td { text-align: right; padding: 8px 10px; }
.table.results th:first-child, .table.results td:first-child { text-align: left; }
.table .unit { color: var(--muted); }
.right { text-align: right; }
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }

/* Scrollable table with sticky header + sortable columns */
.table-scroll { max-height: 62vh; overflow: auto; border: 1px solid var(--line);
  border-radius: var(--radius); background: var(--card); }
.table-scroll .table { border: 0; border-radius: 0; overflow: visible; }
.table thead th { position: sticky; top: 0; z-index: 2; }
a.th-sort { color: inherit; display: inline-flex; align-items: center; gap: 4px; white-space: nowrap; }
a.th-sort:hover { text-decoration: underline; }
a.th-sort .ind { font-size: 10px; opacity: .55; }
a.th-sort.active .ind { opacity: 1; }
.pager { display: flex; align-items: center; justify-content: space-between; gap: 12px;
  margin-top: 12px; flex-wrap: wrap; }
.pager .info { color: var(--muted); font-size: 13px; }
.pager .pages { display: flex; gap: 8px; align-items: center; }
.pager .btn.disabled { opacity: .4; pointer-events: none; }

/* Badges */
.badge { display: inline-block; padding: 2px 9px; border-radius: 999px; font-size: 12px;
  font-weight: 600; }
.status-draft { background: #fdf0d9; color: var(--amber); }
.status-final { background: var(--green-soft); color: var(--green); }
.role-admin { background: #e5e0fb; color: #4c3ec4; }
.role-manager { background: #fce7d2; color: #9a5b16; }
.role-analyst { background: #dbeafe; color: #1d4ed8; }
.role-viewer { background: #eceeec; color: #555; }

/* Forms */
.form label, .filter-bar label { display: block; margin-bottom: 14px; font-size: 13px;
  color: #333; font-weight: 600; }
.form .grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0 18px; }
.form.narrow { max-width: 460px; }
input[type=text], input[type=password], input[type=number], input[type=date], select, textarea {
  width: 100%; padding: 9px 11px; border: 1px solid #cdd4cf; border-radius: 8px;
  font-size: 14px; margin-top: 5px; background: #fff; font-weight: 400;
  font-family: inherit; }
textarea { resize: vertical; }
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--green-2);
  box-shadow: 0 0 0 3px rgba(10,102,194,.18); }
input.computed { background: var(--green-soft); font-weight: 700; color: var(--green); }
input:disabled { background: #f2f2f2; color: #888; }
label.check { display: flex; align-items: center; gap: 8px; font-weight: 500; }
label.check input { width: auto; margin: 0; }
.form-actions { margin-top: 10px; }
.filter-bar { display: flex; gap: 10px; margin-bottom: 16px; align-items: stretch; }
.filter-bar input { margin-top: 0; flex: 1; }
.filter-bar select { margin-top: 0; width: auto; }

/* Key-value list */
.kv { display: grid; grid-template-columns: 40% 60%; gap: 6px 8px; margin: 0; }
.kv dt { color: var(--muted); font-size: 13px; }
.kv dd { margin: 0; font-weight: 500; }

/* Login */
.login-wrap { min-height: 80vh; display: grid; place-items: center; }
.login-card { background: var(--card); border: 1px solid var(--line); border-radius: 14px;
  padding: 32px; width: 360px; box-shadow: var(--shadow); }
.login-head { text-align: center; margin-bottom: 18px; }
.login-head h1 { font-size: 20px; margin: 12px 0 2px; }
.login-head .brand-mark { margin: 0 auto; }

/* Alerts & misc */
.alert { padding: 10px 14px; border-radius: 8px; margin-bottom: 16px; font-size: 14px; }
.alert.error { background: #fdecec; color: #b42318; border: 1px solid #f5c9c4; }
.muted { color: var(--muted); }
.small { font-size: 12px; }
.status-panel { display: flex; align-items: center; justify-content: space-between; gap: 16px; }

@media (max-width: 720px) {
  .stat-row { grid-template-columns: 1fr; }
  .two-col { grid-template-columns: 1fr; }
  .form .grid { grid-template-columns: 1fr; }

  /* Collapse the nav into a hamburger dropdown */
  .nav-toggle { display: flex; }
  .menu { display: none; position: absolute; top: 56px; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 0; background: var(--green);
    padding: 8px 0; box-shadow: 0 8px 16px rgba(0,0,0,.25); z-index: 50; }
  .topbar.nav-open .menu { display: flex; }
  .nav { flex-direction: column; gap: 0; }
  .nav a { padding: 12px 20px; border-radius: 0; }
  .user-box { margin-left: 0; padding: 12px 20px; gap: 10px; flex-wrap: wrap;
    border-top: 1px solid rgba(255,255,255,.15); margin-top: 6px; }
}