:root {
  --ink: #20252b;
  --muted: #65717d;
  --line: #d7dee5;
  --wash: #eef3f7;
  --panel: #ffffff;
  --metal: #46505a;
  --metal-dark: #2b3036;
  --steel: #73879a;
  --steel-soft: #dce7ef;
  --red: #d40000;
  --red-dark: #9f0000;
  --green: #047857;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  background:
    linear-gradient(180deg, #f8fbfd 0%, var(--wash) 220px),
    var(--wash);
  color: var(--ink);
}

.topbar {
  display: grid;
  grid-template-columns: 240px 1fr 240px;
  align-items: center;
  gap: 20px;
  min-height: 88px;
  padding: 14px 28px;
  border-bottom: 1px solid #c8d2dc;
  background:
    linear-gradient(90deg, rgba(255,255,255,.9) 0%, rgba(238,244,248,.96) 40%, rgba(215,226,235,.92) 100%),
    #e6eef4;
  box-shadow: 0 1px 0 rgba(255,255,255,.85) inset;
}

.brand {
  display: flex;
  align-items: center;
  min-width: 0;
}

.brand-logo {
  width: 190px;
  height: 58px;
  display: block;
  object-fit: cover;
  object-position: 48% 55%;
  border-radius: 4px;
  box-shadow: 0 10px 22px rgba(31, 41, 51, .16);
}

.system-title {
  justify-self: center;
  color: var(--metal-dark);
  font-size: 25px;
  font-weight: 800;
  letter-spacing: 0;
  text-align: center;
}

.userbox {
  justify-self: end;
  text-align: right;
  font-size: 13px;
  color: var(--metal-dark);
}

.userbox span {
  display: block;
  color: var(--muted);
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 10px 28px;
  background: var(--metal-dark);
  border-bottom: 3px solid var(--red);
  box-shadow: 0 8px 22px rgba(32, 37, 43, .08);
}

.nav a,
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid #c6d0d9;
  background: var(--panel);
  color: var(--metal-dark);
  border-radius: 8px;
  padding: 8px 12px;
  text-decoration: none;
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
}

.nav a {
  border-color: rgba(255,255,255,.14);
  background: transparent;
  color: #edf2f6;
}

.nav a:hover {
  background: rgba(255,255,255,.1);
  border-color: rgba(255,255,255,.32);
}

.btn.primary {
  background: var(--red);
  border-color: var(--red);
  color: #fff;
}

.btn.primary:hover {
  background: var(--red-dark);
  border-color: var(--red-dark);
}

.btn.danger {
  background: #fff3f3;
  border-color: #f5b5b5;
  color: var(--red-dark);
}

main {
  max-width: 1180px;
  margin: 0 auto;
  padding: 26px 20px 54px;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  margin-bottom: 18px;
  overflow: hidden;
  box-shadow: 0 12px 28px rgba(40, 50, 60, .06);
}

.panel-head {
  padding: 16px 18px;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, #ffffff 0%, #f7fafc 100%);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.panel-body { padding: 18px; }
h1, h2 { margin: 0; }
h1 { font-size: 22px; }
h2 { font-size: 18px; }

.muted {
  color: var(--muted);
  font-size: 13px;
  margin-top: 5px;
}

.notice {
  border: 1px solid #a7f3d0;
  background: #ecfdf5;
  color: var(--green);
  padding: 10px 12px;
  border-radius: 8px;
  margin-bottom: 14px;
}

.error {
  border-color: #fecaca;
  background: #fff5f5;
  color: #991b1b;
}

.grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

.stat {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 14px;
  background: linear-gradient(180deg, #ffffff 0%, #f8fbfd 100%);
}

.stat span {
  color: var(--muted);
  font-size: 12px;
}

.stat strong {
  display: block;
  margin-top: 6px;
  font-size: 24px;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

th, td {
  border-bottom: 1px solid var(--line);
  padding: 10px 8px;
  text-align: left;
  vertical-align: top;
}

th {
  background: #edf2f6;
  color: var(--metal);
  font-size: 12px;
}

label {
  display: block;
  color: var(--metal);
  font-size: 12px;
  font-weight: 700;
  margin-bottom: 5px;
}

input, select, textarea {
  width: 100%;
  border: 1px solid #c8d2dc;
  border-radius: 8px;
  padding: 9px 10px;
  font: inherit;
  background: #fff;
  color: var(--ink);
}

input:focus, select:focus, textarea:focus {
  outline: 2px solid rgba(212, 0, 0, .16);
  border-color: #c73a3a;
}

textarea { min-height: 90px; }

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.full { grid-column: 1 / -1; }

.actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 16px;
}

.login {
  max-width: 420px;
}

.pill {
  display: inline-flex;
  padding: 5px 8px;
  border-radius: 999px;
  background: var(--steel-soft);
  color: var(--metal-dark);
  border: 1px solid #c3d1dc;
  font-size: 12px;
  font-weight: 700;
}

@media (max-width: 800px) {
  .topbar {
    grid-template-columns: 1fr;
    justify-items: start;
  }
  .system-title {
    justify-self: start;
    text-align: left;
    font-size: 22px;
  }
  .userbox {
    justify-self: start;
    text-align: left;
  }
  .grid, .form-grid { grid-template-columns: 1fr; }
  .table-wrap { overflow-x: auto; }
  table { min-width: 760px; }
}