:root {
  --bg: #f6f8fb;
  --panel: #ffffff;
  --text: #1f2937;
  --muted: #6b7280;
  --line: #e5e7eb;
  --brand: #0f766e;
  --brand-dark: #0b5c55;
  --danger: #b91c1c;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 14px 20px;
  border-bottom: 1px solid var(--line);
  background: var(--panel);
  position: sticky;
  top: 0;
}

h1 { margin: 0; font-size: 24px; }
h2 { margin-top: 0; }
.sub, .muted { color: var(--muted); margin: 4px 0 0 0; }

main {
  max-width: 1200px;
  margin: 18px auto;
  padding: 0 14px 24px;
  display: grid;
  gap: 14px;
}

.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 14px;
}

.narrow { max-width: 560px; margin: 40px auto; }
.login-wide { max-width: 760px; }

.grid { display: grid; gap: 10px; }
.grid.one { grid-template-columns: 1fr; }
.grid.two { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.full { grid-column: 1 / -1; }

.row {
  display: flex;
  align-items: center;
  gap: 10px;
}

.row.wrap { flex-wrap: wrap; }

label {
  display: grid;
  gap: 6px;
  font-size: 14px;
}

input, select {
  width: 100%;
  border: 1px solid #cbd5e1;
  border-radius: 10px;
  padding: 10px;
  font-size: 14px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 0;
  border-radius: 10px;
  padding: 10px 14px;
  font-size: 14px;
  font-weight: 600;
  background: var(--brand);
  color: #fff;
  cursor: pointer;
  text-decoration: none;
}

.btn:hover { background: var(--brand-dark); }
.btn.secondary { background: #1d4ed8; }
.btn.danger { background: var(--danger); }

.table-wrap { overflow: auto; }
table {
  width: 100%;
  border-collapse: collapse;
  min-width: 720px;
}
th, td {
  border-bottom: 1px solid var(--line);
  padding: 8px;
  text-align: left;
  vertical-align: top;
  font-size: 14px;
}

.flash-wrap {
  max-width: 1200px;
  margin: 12px auto 0;
  padding: 0 14px;
}

.flash {
  border-radius: 10px;
  padding: 10px 12px;
  margin-bottom: 8px;
}

.flash.success { background: #dcfce7; color: #166534; }
.flash.error { background: #fee2e2; color: #991b1b; }

.pending-item {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px;
  margin-bottom: 12px;
}

.data-box {
  margin-top: 10px;
  border: 1px dashed #d1d5db;
  border-radius: 10px;
  padding: 10px;
}