.eng-upgrade-mount {
  display: flex;
  justify-content: flex-end;
  margin-bottom: 0.65rem;
}

.site-header .eng-upgrade-mount {
  margin: 0;
  align-items: center;
}

.eng-upgrade-btn {
  border: 2px solid var(--eng-red, #d81f26);
  border-radius: 999px;
  padding: 0.42rem 0.85rem;
  background: var(--mode-tab-bg, rgba(255, 255, 255, 0.95));
  color: var(--eng-red-deep, #8a0000);
  font-family: "Special Elite", "Courier New", Courier, monospace;
  font-size: 0.82rem;
  font-weight: 800;
  cursor: pointer;
  box-shadow: 2px 3px 0 rgba(120, 10, 10, 0.08);
  transition: background 160ms ease, box-shadow 160ms ease;
}

.eng-upgrade-btn:hover {
  background: rgba(216, 31, 38, 0.1);
}

.eng-upgrade-modal {
  position: fixed;
  inset: 0;
  z-index: 10000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  background: rgba(8, 8, 10, 0.82);
  backdrop-filter: blur(3px);
}

.eng-upgrade-modal.is-open {
  display: flex;
}

.eng-upgrade-modal__beta-note {
  margin: 0 0 0.75rem;
  padding: 0.55rem 0.7rem;
  border-radius: 8px;
  border: 2px solid rgba(216, 31, 38, 0.35);
  background: rgba(216, 31, 38, 0.08);
  font-size: 0.88rem;
  line-height: 1.4;
  color: var(--eng-red-deep, #8a0000);
}

.eng-upgrade-modal__card {
  width: min(920px, 100%);
  max-height: 92vh;
  overflow: auto;
  border-radius: 14px;
  border: 2px solid rgba(216, 31, 38, 0.4);
  background: var(--mode-tab-bg, var(--surface-card, #fff));
  padding: 1rem;
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.35);
}

.eng-upgrade-modal__head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}

.eng-upgrade-modal__head h2 {
  margin: 0;
  font-size: 1.35rem;
  color: var(--eng-red, #d81f26);
}

.eng-upgrade-modal__sub {
  margin: 0.2rem 0 0;
  font-size: 0.85rem;
  color: var(--eng-red-deep, #8a0000);
}

.eng-upgrade-modal__close {
  border: 2px solid rgba(216, 31, 38, 0.35);
  border-radius: 8px;
  background: var(--surface-muted, transparent);
  font-size: 1.35rem;
  line-height: 1;
  width: 2rem;
  height: 2rem;
  cursor: pointer;
  color: var(--eng-red-deep, #8a0000);
}

.eng-upgrade-modal__close:hover {
  background: rgba(216, 31, 38, 0.1);
  color: var(--eng-red, #d81f26);
}

.eng-upgrade-billing-toggle {
  display: inline-flex;
  border: 2px solid rgba(216, 31, 38, 0.35);
  border-radius: 999px;
  overflow: hidden;
  margin-bottom: 0.85rem;
  background: var(--surface-muted, #f4f4f4);
}

.eng-upgrade-billing-toggle button {
  border: none;
  background: transparent;
  color: var(--eng-red-deep, #8a0000);
  padding: 0.42rem 0.8rem;
  font-size: 0.82rem;
  font-weight: 700;
  cursor: pointer;
  transition: background 180ms ease, color 180ms ease;
}

.eng-upgrade-billing-toggle button.is-active {
  background: var(--eng-red-deep, #8a0000);
  color: #fff;
}

.eng-upgrade-plans {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.7rem;
}

.eng-upgrade-plan {
  position: relative;
  border: 2px solid rgba(216, 31, 38, 0.35);
  border-radius: 12px;
  padding: 0.8rem;
  background: var(--surface-muted, #fafafa);
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
}

.eng-upgrade-plan.is-current {
  border-color: rgba(216, 31, 38, 0.65);
  box-shadow: 0 0 0 2px rgba(216, 31, 38, 0.15);
}

.eng-upgrade-plan.is-recommended {
  border-color: var(--eng-red, #d81f26);
}

.eng-upgrade-plan__badge {
  position: absolute;
  top: -0.45rem;
  right: 0.55rem;
  border-radius: 999px;
  padding: 0.15rem 0.45rem;
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  background: var(--eng-red-deep, #8a0000);
  color: #fff;
}

.eng-upgrade-plan__badge--current {
  background: var(--eng-red, #d81f26);
}

.eng-upgrade-plan h3 {
  margin: 0 0 0.2rem;
  font-size: 1.05rem;
  color: var(--eng-red, #d81f26);
}

.eng-upgrade-plan__price {
  margin: 0 0 0.45rem;
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--eng-red-deep, #8a0000);
}

.eng-upgrade-plan ul {
  margin: 0 0 0.65rem;
  padding-left: 1rem;
  font-size: 0.84rem;
  line-height: 1.4;
  color: var(--eng-red-deep, #8a0000);
}

.eng-upgrade-plan__select {
  width: 100%;
  border: 2px solid var(--eng-red, #d81f26);
  border-radius: 8px;
  padding: 0.45rem 0.55rem;
  background: var(--mode-tab-bg, var(--surface-card, #fff));
  color: var(--eng-red-deep, #8a0000);
  font-family: inherit;
  font-weight: 800;
  cursor: pointer;
}

.eng-upgrade-plan__select:hover:not(:disabled) {
  background: rgba(216, 31, 38, 0.1);
}

.eng-upgrade-plan__select:disabled {
  opacity: 0.65;
  cursor: default;
}

@media (max-width: 860px) {
  .eng-upgrade-plans {
    grid-template-columns: 1fr;
  }
}

[data-theme="dark"] .eng-upgrade-btn {
  background: var(--mode-tab-bg);
  border-color: var(--eng-red);
  color: var(--eng-red);
  box-shadow: 3px 4px 0 rgba(0, 0, 0, 0.35);
}

[data-theme="dark"] .eng-upgrade-btn:hover {
  background: rgba(216, 31, 38, 0.14);
}

[data-theme="dark"] .eng-upgrade-modal__card {
  background: var(--mode-tab-bg);
  border-color: rgba(216, 31, 38, 0.5);
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.55);
}

[data-theme="dark"] .eng-upgrade-modal__beta-note {
  background: rgba(216, 31, 38, 0.12);
  border-color: rgba(216, 31, 38, 0.45);
  color: var(--eng-red);
}

[data-theme="dark"] .eng-upgrade-modal__sub,
[data-theme="dark"] .eng-upgrade-plan ul,
[data-theme="dark"] .eng-upgrade-plan__price {
  color: var(--eng-red-deep);
}

[data-theme="dark"] .eng-upgrade-billing-toggle {
  background: var(--surface-muted);
  border-color: rgba(216, 31, 38, 0.45);
}

[data-theme="dark"] .eng-upgrade-billing-toggle button {
  color: var(--eng-red-deep);
}

[data-theme="dark"] .eng-upgrade-billing-toggle button.is-active {
  background: var(--eng-red-deep);
  color: #fff;
}

[data-theme="dark"] .eng-upgrade-plan {
  background: var(--surface-muted);
  border-color: rgba(216, 31, 38, 0.4);
}

[data-theme="dark"] .eng-upgrade-plan.is-current,
[data-theme="dark"] .eng-upgrade-plan.is-recommended {
  border-color: var(--eng-red);
  box-shadow: 0 0 0 2px rgba(216, 31, 38, 0.18);
}

[data-theme="dark"] .eng-upgrade-plan__select {
  background: var(--mode-tab-bg);
  border-color: var(--eng-red);
  color: var(--eng-red);
}

[data-theme="dark"] .eng-upgrade-plan__select:hover:not(:disabled) {
  background: rgba(216, 31, 38, 0.14);
}

[data-theme="dark"] .eng-upgrade-modal__close {
  background: var(--surface-muted);
  border-color: rgba(216, 31, 38, 0.4);
  color: var(--eng-red);
}