:root {
  --bg: #f5f7fa;
  --fg: #1a202c;
  --muted: #718096;
  --accent: #2b6cb0;
  --accent-dark: #1a365d;
  --carrier: #2c5282;
  --border: #cbd5e0;
  --hover: #ebf8ff;
  --green: #38a169;
  --green-bg: #f0fff4;
  --yellow: #d69e2e;
  --yellow-bg: #fffaf0;
  --red: #c53030;
  --red-bg: #fff5f5;
  --gray-bg: #edf2f7;
}

* { box-sizing: border-box; }
body { margin: 0; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
       background: var(--bg); color: var(--fg); font-size: 14px; line-height: 1.5; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
h1 { font-size: 22px; margin: 0 0 8px 0; color: var(--accent-dark); }
h2 { font-size: 16px; margin: 24px 0 8px 0; color: var(--accent-dark); }
h3 { font-size: 14px; margin: 16px 0 6px 0; color: var(--accent-dark); }

/* Topbar ------------------------------------------------------------- */
.topbar {
  background: var(--accent-dark);
  color: #fff;
  padding: 10px 24px;
  display: flex; align-items: center; gap: 24px;
}
.topbar.carrier { background: var(--carrier); }
.topbar .brand { font-weight: 700; letter-spacing: 0.5px; }
.topbar nav { display: flex; gap: 18px; flex: 1; }
.topbar nav a { color: rgba(255,255,255,0.7); padding: 4px 0; border-bottom: 1px solid transparent; }
.topbar nav a:hover, .topbar nav a.active { color: #fff; border-color: #fff; text-decoration: none; }
.topbar .userbox { display: flex; gap: 12px; align-items: center; }
.topbar .userbox .email { opacity: 0.7; font-size: 13px; }
.topbar .logout { color: rgba(255,255,255,0.7); font-size: 13px; }

main {
  max-width: 1240px;
  margin: 20px auto 60px;
  padding: 0 24px;
}
footer {
  text-align: center; padding: 16px; color: var(--muted); font-size: 12px;
}

.page-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 16px; margin-bottom: 14px; }
.page-head h1 { margin: 0; }
.status-bar { text-align: right; min-width: 200px; }

/* Flash messages ----------------------------------------------------- */
.flash-stack { margin-bottom: 14px; display: flex; flex-direction: column; gap: 6px; }
.flash { padding: 9px 14px; border-radius: 4px; border-left: 3px solid; font-size: 13.5px; }
.flash-ok    { background: var(--green-bg);  border-color: var(--green);  color: #22543d; }
.flash-warn  { background: var(--yellow-bg); border-color: var(--yellow); color: #744210; }
.flash-error { background: var(--red-bg);    border-color: var(--red);    color: #742a2a; }

/* Buttons ------------------------------------------------------------ */
.btn-primary, .btn-secondary, .btn-danger, .btn-link {
  display: inline-block; border: 1px solid transparent;
  padding: 7px 14px; font-size: 13.5px; font-weight: 600;
  border-radius: 4px; cursor: pointer; text-decoration: none;
  font-family: inherit;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: #2c5282; text-decoration: none; }
.btn-secondary { background: #fff; color: var(--accent); border-color: var(--accent); }
.btn-secondary:hover { background: var(--hover); text-decoration: none; }
.btn-danger { background: var(--red); color: #fff; }
.btn-danger:hover { background: #9b2c2c; }
.btn-link { background: transparent; color: var(--muted); border: none; padding: 7px 4px; }
.btn-link:hover { color: var(--accent); text-decoration: underline; }
.btn-block { display: block; width: 100%; text-align: center; padding: 10px; }

/* Tables ------------------------------------------------------------- */
table.grid { width: 100%; border-collapse: collapse; background: #fff;
             box-shadow: 0 1px 3px rgba(0,0,0,0.05); border-radius: 4px; overflow: hidden; }
table.grid th, table.grid td { padding: 9px 12px; text-align: left; border-bottom: 1px solid var(--border); vertical-align: top; }
table.grid th { background: var(--gray-bg); color: var(--accent-dark); font-weight: 600; font-size: 12.5px; text-transform: uppercase; letter-spacing: 0.3px; }
table.grid tr:hover td { background: #fafbfc; }
table.grid tr.leader td { background: var(--green-bg); font-weight: 600; }
table.grid tr.leader:hover td { background: #e6fff0; }
table.grid tr.dim td { color: var(--muted); }
table.grid tr.totals td { background: var(--gray-bg); font-weight: 700; }
table.grid .empty-row { text-align: center; color: var(--muted); padding: 24px; }
table.grid .desc { max-width: 280px; font-size: 12px; color: #4a5568; }
table.grid.items th, table.grid.items td { font-size: 12.5px; padding: 7px 9px; }
table.grid.events code { font-family: ui-monospace, Menlo, monospace; font-size: 12px; }
table.grid.events td.data { max-width: 380px; font-family: ui-monospace, Menlo, monospace; font-size: 11px; color: #4a5568; overflow: hidden; text-overflow: ellipsis; }

/* Pills -------------------------------------------------------------- */
.pill { display: inline-block; padding: 2px 9px; border-radius: 12px; font-size: 11px;
        font-weight: 700; letter-spacing: 0.3px; text-transform: uppercase; }
.pill-green  { background: #c6f6d5; color: #22543d; }
.pill-yellow { background: #fefcbf; color: #744210; }
.pill-red    { background: #fed7d7; color: #742a2a; }
.pill-blue   { background: #bee3f8; color: #2a4365; }
.pill-gray   { background: #e2e8f0; color: #2d3748; }

/* Chips -------------------------------------------------------------- */
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin: 6px 0 16px; }
.chip { background: #fff; border: 1px solid var(--border); padding: 6px 12px; border-radius: 16px; font-size: 13px; }
.chip small { margin-left: 6px; }

/* KPI cards ---------------------------------------------------------- */
.kpi-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin: 12px 0 16px; }
.kpi { background: #fff; border: 1px solid var(--border); border-radius: 4px; padding: 12px 14px; }
.kpi span { display: block; font-size: 11px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.3px; margin-bottom: 4px; }
.kpi b { font-size: 22px; color: var(--accent-dark); }
.kpi-accent { background: var(--hover); border-color: var(--accent); }
.kpi-accent b { color: #22543d; }
.kpi-warn { background: var(--yellow-bg); border-color: var(--yellow); }
.kpi-success { background: var(--green-bg); border-color: var(--green); }
.kpi-success b { color: #22543d; }

/* Callout ------------------------------------------------------------ */
.callout { background: #fff; border-left: 3px solid var(--accent); padding: 10px 14px; margin: 12px 0; border-radius: 0 4px 4px 0; }
.callout-success { border-color: var(--green); background: var(--green-bg); }
.callout-warn    { border-color: var(--yellow); background: var(--yellow-bg); }

/* Forms -------------------------------------------------------------- */
.form { display: flex; flex-direction: column; gap: 10px; max-width: 100%; }
.form label { display: flex; flex-direction: column; gap: 4px; font-size: 13px; color: var(--muted); }
.form input[type=text], .form input[type=email], .form input[type=password], .form input[type=number],
.form input[type=date], .form input[type=datetime-local], .form select {
  padding: 8px 10px; border: 1px solid var(--border); border-radius: 4px; background: #fff;
  font-size: 14px; font-family: inherit; color: var(--fg);
}
.form input:focus, .form select:focus { outline: none; border-color: var(--accent); }
.inline-form { display: grid; grid-template-columns: 1fr 1fr 1fr auto; align-items: end; gap: 10px; }
.bid-form { flex-direction: row; align-items: flex-end; gap: 12px; margin: 12px 0; }
.bid-form label { flex: 0 0 260px; }
.bid-form input { font-size: 22px; font-weight: 700; padding: 10px; }
.dropzone { border: 2px dashed var(--accent); border-radius: 6px; padding: 24px; text-align: center; background: var(--hover); cursor: pointer; }
.dropzone input[type=file] { display: block; margin: 0 auto; }
.upload-form { gap: 12px; }
.grid-fields { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.grid-fields label.full { grid-column: 1 / -1; }
.tender-form .actions { display: flex; gap: 10px; justify-content: flex-end; margin-top: 16px; }
.carrier-pick { display: grid; grid-template-columns: repeat(2, 1fr); gap: 6px; margin: 8px 0 12px; }
.carrier-pick label.check { display: flex; gap: 8px; align-items: center; padding: 6px 10px; background: #fff; border: 1px solid var(--border); border-radius: 4px; }

/* Auth pages --------------------------------------------------------- */
.auth-page main { max-width: 420px; margin-top: 60px; }
.auth-card { background: #fff; padding: 28px 30px; border-radius: 6px; box-shadow: 0 2px 8px rgba(0,0,0,0.06); }
.auth-card h1 { margin-top: 0; }

/* Misc --------------------------------------------------------------- */
.muted { color: var(--muted); font-size: 13px; }
.empty { background: #fff; border: 1px dashed var(--border); padding: 36px; text-align: center; color: var(--muted); border-radius: 4px; }
.card { background: #fff; padding: 12px 16px; border-radius: 4px; margin-bottom: 16px; border: 1px solid var(--border); }
.card summary { cursor: pointer; font-weight: 600; }
.result-card { background: #fff; padding: 18px; border-radius: 6px; margin: 12px 0; border: 1px solid var(--border); text-align: center; }
.result-card.success { background: var(--green-bg); border-color: var(--green); }
.result-card .big { font-size: 22px; font-weight: 700; margin-bottom: 6px; color: var(--accent-dark); }
.result-card.success .big { color: #22543d; }
.actions { display: flex; gap: 10px; margin: 18px 0; align-items: center; }