.settings-shell {
  width: min(1240px, calc(100% - 48px));
  margin: 0 auto;
  padding: 54px 0 80px;
}

.access-card { width: min(520px, 100%); margin: 80px auto; padding: 30px; background: #fff; border: 1px solid var(--line); border-radius: 20px; text-align: center; }
.access-card p { color: var(--muted); line-height: 1.6; }

.settings-heading {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 28px;
  margin-bottom: 28px;
}

.settings-heading h1 { margin: 6px 0 8px; font-size: clamp(32px, 4vw, 48px); }
.settings-heading p { margin: 0; max-width: 720px; color: var(--muted); }

.security-badge {
  display: grid;
  gap: 2px;
  min-width: 160px;
  padding: 14px 18px;
  border: 1px solid #bee3c7;
  border-radius: 16px;
  background: #effaf2;
  color: #147b35;
}
.security-badge span { font-size: 13px; }

.settings-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 22px; }
.settings-card {
  display: flex;
  flex-direction: column;
  gap: 20px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: #fff;
  box-shadow: 0 14px 40px rgba(29, 42, 68, .06);
}
.card-heading { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.card-heading h2 { margin: 5px 0 0; font-size: 27px; }
.switch-label, .clear-secret { display: flex; align-items: center; gap: 9px; color: var(--muted); }
.switch-label input, .clear-secret input { width: 18px; height: 18px; accent-color: var(--blue); }

.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.form-grid .wide { grid-column: 1 / -1; }
.form-grid label { display: grid; gap: 7px; color: #4d5562; font-size: 14px; font-weight: 700; }
.form-grid input, .form-grid select {
  width: 100%;
  min-height: 48px;
  box-sizing: border-box;
  padding: 11px 13px;
  border: 1px solid #cbd1db;
  border-radius: 11px;
  background: #fff;
  color: #1d1d1f;
  font: inherit;
}
.form-grid input:focus, .form-grid select:focus { outline: 3px solid rgba(0, 113, 227, .14); border-color: var(--blue); }
.secret-state { min-height: 20px; margin: -7px 0 0; color: var(--muted); font-size: 13px; }
.test-state { min-height: 66px; padding: 13px 15px; border-radius: 13px; background: #f5f7fa; color: #59616c; }
.test-state strong { display: block; margin-bottom: 4px; color: #1d1d1f; }
.test-state.passed { background: #effaf2; color: #147b35; }
.test-state.failed { background: #fff1ef; color: #b42318; }
.card-actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: auto; }
.clear-secret { font-size: 13px; }
.settings-note { display: flex; gap: 12px; margin-top: 22px; padding: 18px 20px; border-radius: 15px; background: #f1f5fb; color: #59616c; }
.settings-note strong { flex: 0 0 auto; color: #1d1d1f; }

@media (max-width: 900px) {
  .settings-grid { grid-template-columns: 1fr; }
  .settings-heading { align-items: flex-start; flex-direction: column; }
  .settings-shell { width: min(100% - 28px, 720px); padding-top: 28px; }
}

@media (max-width: 560px) {
  .form-grid { grid-template-columns: 1fr; }
  .form-grid .wide { grid-column: auto; }
  .settings-card { padding: 20px; }
  .card-actions, .settings-note { flex-direction: column; }
  .card-actions .button { width: 100%; }
}