.backend-shell {
  min-height: 100vh;
  padding: 2rem clamp(1rem, 4vw, 4rem) 4rem;
}

.backend-header {
  display: grid;
  gap: 1rem;
  margin-bottom: 2rem;
  padding: 1.5rem;
  background: linear-gradient(180deg, rgba(17, 40, 51, 0.96), rgba(7, 19, 26, 0.98));
  border: 1px solid var(--line);
  border-radius: 0.35rem;
  box-shadow: var(--shadow);
}

.backend-header h1 {
  margin: 0.25rem 0 0;
  font-size: clamp(1.6rem, 3vw, 2.5rem);
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.backend-kicker,
.backend-user {
  margin: 0;
  color: var(--muted);
}

.backend-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.backend-nav a {
  padding: 0.8rem 1rem;
  text-decoration: none;
  border: 1px solid var(--line);
  border-radius: 0.25rem;
  background: rgba(17, 40, 51, 0.7);
  color: var(--ink);
}

.backend-nav a.active,
.backend-nav a:hover {
  background: var(--accent-soft);
  color: var(--accent);
  border-color: var(--line-strong);
}

.metric-grid,
.backend-grid,
.dashboard-grid,
.backend-form-grid {
  display: grid;
  gap: 1rem;
}

.metric-grid {
  grid-template-columns: repeat(auto-fit, minmax(12rem, 1fr));
  margin-bottom: 1.5rem;
}

.metric-card,
.data-card,
.auth-card {
  padding: 1.35rem;
  background: linear-gradient(180deg, rgba(17, 40, 51, 0.94), rgba(10, 25, 33, 0.94));
  border: 1px solid var(--line);
  border-radius: 0.3rem;
  box-shadow: var(--shadow);
}

.metric-card strong {
  display: block;
  font-size: 2rem;
  color: var(--white);
}

.metric-card span,
.data-card p,
.data-card td,
.data-card li,
.auth-card p {
  color: var(--muted);
}

.dashboard-grid {
  grid-template-columns: 2fr 1.1fr;
  align-items: start;
}

.backend-grid {
  grid-template-columns: repeat(auto-fit, minmax(17rem, 1fr));
}

.backend-form-grid {
  grid-template-columns: repeat(auto-fit, minmax(14rem, 1fr));
}

.wide-form-field {
  grid-column: 1 / -1;
}

.data-card h2,
.auth-card h1,
.auth-card h2 {
  margin-top: 0;
}

.table-wrap {
  overflow-x: auto;
}

.backend-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 42rem;
}

.backend-table th,
.backend-table td {
  padding: 0.8rem 0.65rem;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.backend-table th {
  color: var(--white);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.3rem 0.6rem;
  border-radius: 999px;
  background: var(--accent-soft);
  border: 1px solid var(--line-strong);
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.auth-shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 2rem 1rem;
}

.auth-card {
  width: min(100%, 34rem);
}

.auth-card form,
.data-card form {
  display: grid;
  gap: 1rem;
}

.auth-card label,
.data-card label {
  display: grid;
  gap: 0.45rem;
  color: var(--white);
  font-weight: 600;
}

.data-card .check-label {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.data-card .check-label input {
  width: auto;
}

.auth-card input,
.data-card input,
.data-card select,
.data-card textarea {
  width: 100%;
}

.form-note,
.flash-message,
.error-message,
.inline-list {
  margin: 0;
}

.flash-message {
  color: var(--accent);
}

.error-message {
  color: #ff9b9b;
}

.inline-list {
  padding-left: 1rem;
}

.export-actions {
  display: grid;
  gap: 0.75rem;
  margin-top: 1.25rem;
}

.export-actions .button {
  width: 100%;
}

@media (max-width: 900px) {
  .dashboard-grid {
    grid-template-columns: 1fr;
  }

  .backend-table {
    min-width: 32rem;
  }
}