/* ==========================================================================
   ZINBO Design System — Buy Modal Styles (modal.css)
   Popup modal dialog, licensing tier cards, and Facebook Messenger CTA.
   ========================================================================== */

/* --- Modal Backdrop & Dialog --- */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.45);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s ease, visibility 0.2s ease;
}

.modal-backdrop.active {
  opacity: 1;
  visibility: visible;
}

.buy-modal-dialog {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--card-radius);
  width: 100%;
  max-width: 600px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.18);
  padding: 50px 38px 54px;
  position: relative;
  transform: translateY(12px) scale(0.98);
  transition: transform 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  box-sizing: border-box;
}

.modal-backdrop.active .buy-modal-dialog {
  transform: translateY(0) scale(1);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 28px;
  border-bottom: none;
}

.modal-title {
  font-family: var(--font-ui);
  font-size: 1.45rem;
  font-weight: 700;
  color: var(--text-main);
  margin: 0;
  text-align: center;
  letter-spacing: -0.02em;
}

.modal-close-btn {
  position: absolute;
  top: 28px;
  right: 28px;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 1px solid var(--border-light);
  background: var(--bg-card);
  color: var(--text-muted);
  font-size: 0.92rem;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  transition: all 0.15s ease;
  z-index: 10;
}

.modal-close-btn:hover {
  background: var(--bg-subtle);
  border-color: var(--text-main);
  color: var(--text-main);
  transform: scale(1.05);
}

/* --- License Tiers Stack --- */
.modal-licenses-stack {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 30px;
}

.license-tier-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--card-radius);
  padding: 20px 24px;
  transition: all 0.18s ease;
}

.license-tier-card:hover {
  border-color: var(--text-main);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.04);
}

.tier-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
}

.tier-name {
  font-family: var(--font-ui);
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-main);
  letter-spacing: -0.01em;
}

.tier-price {
  font-family: var(--font-ui);
  font-size: 0.98rem;
  font-weight: 700;
  color: var(--text-main);
  letter-spacing: -0.01em;
  white-space: nowrap;
}

.tier-desc {
  font-family: var(--font-ui);
  font-size: 0.88rem;
  line-height: 1.5;
  color: var(--text-muted);
  margin: 0;
}

/* --- Modal Footer & Messenger CTA --- */
.modal-footer-cta {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 16px;
  padding-top: 6px;
  border-top: none;
}

.modal-contact-note {
  font-family: var(--font-ui);
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.45;
  margin: 0;
  text-align: center;
  letter-spacing: -0.01em;
}

.modal-contact-note a,
.modal-fb-link {
  color: var(--text-main);
  text-decoration: underline;
  text-underline-offset: 3px;
  font-weight: 500;
  word-break: break-all;
  transition: opacity 0.15s ease;
}

.modal-contact-note a:hover,
.modal-fb-link:hover {
  opacity: 0.75;
}

.messenger-buy-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  width: auto;
  height: 44px;
  padding: 0 32px;
  border-radius: var(--btn-radius);
  background: var(--text-main);
  color: var(--accent-contrast);
  text-decoration: none;
  font-family: var(--font-ui);
  font-size: 0.92rem;
  font-weight: 600;
  transition: all 0.15s ease;
  box-sizing: border-box;
}

.messenger-buy-btn:hover {
  opacity: 0.9;
  transform: translateY(-1px);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.messenger-icon-img {
  width: 22px;
  height: 22px;
  object-fit: contain;
}

/* =========================================================================
   Modal Responsive Breakpoints
   ========================================================================= */
@media (max-width: 768px) {
  .modal-backdrop {
    padding: 16px 12px;
  }
  .buy-modal-dialog {
    padding: 24px 18px 22px;
    max-height: 92vh;
    border-radius: 20px;
    width: 100%;
    max-width: 440px;
  }
  .modal-close-btn {
    top: 18px;
    right: 18px;
    width: 32px;
    height: 32px;
  }
  .modal-header {
    margin-bottom: 16px;
  }
  .modal-title {
    font-size: 1.25rem;
  }
  .modal-licenses-stack {
    gap: 10px;
    margin-bottom: 16px;
  }
  .license-tier-card {
    padding: 12px 14px;
    border-radius: 14px;
  }
  .tier-card-top {
    margin-bottom: 3px;
  }
  .tier-name {
    font-size: 0.9rem;
  }
  .tier-price {
    font-size: 0.9rem;
  }
  .tier-desc {
    font-size: 0.78rem;
    line-height: 1.35;
  }
  .modal-footer-cta {
    gap: 10px;
    padding-top: 0;
  }
  .modal-contact-note {
    white-space: normal;
    font-size: 0.78rem;
    line-height: 1.35;
    max-width: 290px;
  }
.messenger-buy-btn {
    width: 100%;
    height: 42px;
    font-size: 0.9rem;
  }
}