/* ==========================================================================
   upgrade-modal.css — plan upgrade modal (Part 5).
   Hidden by default; .is-open (toggled by upgradeModal.js) reveals it.
   ========================================================================== */

.upgrade-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  z-index: 1000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}
.upgrade-modal-overlay.is-open {
  display: flex;
}

.upgrade-modal {
  background: var(--surface);
  border: 1px solid var(--border);
  max-width: 800px;
  width: 100%;
  border-radius: 16px;
  padding: 2rem;
  max-height: 90vh;
  overflow-y: auto;
}
[data-theme="light"] .upgrade-modal {
  background: #ffffff;
}

.upgrade-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
}
.upgrade-modal-header h2 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text);
  margin: 0;
}
.upgrade-modal-close {
  background: transparent;
  border: none;
  color: var(--text-m);
  font-size: 1rem;
  cursor: pointer;
  padding: 0.25rem 0.5rem;
  line-height: 1;
}
.upgrade-modal-close:hover {
  color: var(--text);
}

.upgrade-modal-plans {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}
.upgrade-modal-loading {
  grid-column: 1 / -1;
  text-align: center;
  color: var(--text-m);
  font-size: 0.85rem;
  padding: 1.5rem;
}

.upgrade-plan-card {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.upgrade-plan-card.current {
  border-color: var(--accent);
  background: var(--accent-dim);
}

.plan-name {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
}
.plan-price {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent);
}
.plan-features {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}
.plan-features li {
  font-size: 0.82rem;
  color: var(--text-m);
  padding-left: 1.1rem;
  position: relative;
}
.plan-features li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: 700;
}

.plan-select-btn {
  width: 100%;
  background: var(--accent);
  color: #ffffff;
  border: none;
  border-radius: 8px;
  padding: 0.55rem 1rem;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  margin-top: auto;
}
.plan-select-btn:hover {
  filter: brightness(1.08);
}
.plan-select-btn.disabled {
  background: var(--surface3);
  color: var(--text-d);
  cursor: default;
}

.upgrade-modal-footer {
  margin: 1.25rem 0 0;
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-m);
}
.upgrade-modal-footer a {
  color: var(--accent);
}
.upgrade-modal-note {
  margin-top: 0.75rem;
  text-align: center;
  font-size: 0.82rem;
  color: var(--green);
  font-weight: 600;
}

@media (max-width: 640px) {
  .upgrade-modal-plans {
    grid-template-columns: 1fr;
  }
}