/* Heathrow subscribe popup — readable, high-contrast */
.hcpb-sub-root {
  --hcpb-sub-ink: #0f172a;
  --hcpb-sub-muted: #64748b;
  --hcpb-sub-line: #e2e8f0;
  --hcpb-sub-blue: #1d4ed8;
  --hcpb-sub-blue-deep: #1e3a8a;
  --hcpb-sub-surface: #f8fafc;
  position: fixed;
  inset: 0;
  z-index: 99999;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  padding: 16px;
  pointer-events: none;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s ease, visibility 0.25s ease;
  font-family: "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  -webkit-font-smoothing: antialiased;
}

.hcpb-sub-root.is-open {
  pointer-events: auto;
  opacity: 1;
  visibility: visible;
}

.hcpb-sub-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(15, 23, 42, 0.48);
  backdrop-filter: blur(3px);
}

.hcpb-sub-card {
  position: relative;
  width: min(400px, 100%);
  margin-bottom: 8px;
  background: #fff;
  border: 1px solid rgba(226, 232, 240, 0.9);
  border-radius: 14px;
  box-shadow: 0 18px 40px rgba(15, 23, 42, 0.18);
  overflow: hidden;
  transform: translateY(14px);
  transition: transform 0.28s cubic-bezier(0.22, 1, 0.36, 1);
}

.hcpb-sub-root.is-open .hcpb-sub-card {
  transform: translateY(0);
}

@media (min-width: 720px) {
  .hcpb-sub-root {
    align-items: center;
  }
  .hcpb-sub-card {
    margin-bottom: 0;
  }
}

/* Light header — high contrast, no dark-on-blue */
.hcpb-sub-card__top {
  padding: 28px 24px 20px;
  background: var(--hcpb-sub-surface);
  border-bottom: 1px solid var(--hcpb-sub-line);
  color: var(--hcpb-sub-ink);
}

.hcpb-sub-eyebrow {
  display: inline-block;
  margin: 0 0 10px;
  padding: 4px 9px;
  border-radius: 6px;
  background: #eff6ff;
  color: var(--hcpb-sub-blue);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  line-height: 1.2;
}

.hcpb-sub-card__top .hcpb-sub-title,
.hcpb-sub-title {
  margin: 0;
  color: var(--hcpb-sub-ink) !important;
  font-size: 1.375rem;
  line-height: 1.25;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.hcpb-sub-card__top .hcpb-sub-lead,
.hcpb-sub-lead {
  margin: 10px 0 0;
  color: var(--hcpb-sub-muted) !important;
  font-size: 0.9375rem;
  line-height: 1.5;
  font-weight: 400;
}

.hcpb-sub-lead strong {
  color: var(--hcpb-sub-ink);
  font-weight: 700;
}

.hcpb-sub-card__body {
  padding: 20px 24px 22px;
}

.hcpb-sub-form {
  display: grid;
  gap: 8px;
}

.hcpb-sub-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--hcpb-sub-ink);
}

.hcpb-sub-input,
.hcpb-sub-root input.hcpb-sub-input,
.hcpb-sub-root input.hcpb-sub-input:focus,
.hcpb-sub-root input.hcpb-sub-input:focus-visible,
.hcpb-sub-root input.hcpb-sub-input:invalid,
.hcpb-sub-root input.hcpb-sub-input:user-invalid {
  width: 100%;
  box-sizing: border-box;
  margin: 0;
  border: 1px solid var(--hcpb-sub-line) !important;
  border-radius: 10px !important;
  padding: 12px 14px;
  font-size: 16px;
  line-height: 1.4;
  color: var(--hcpb-sub-ink) !important;
  background: #fff !important;
  box-shadow: none !important;
  outline: none !important;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
  -webkit-appearance: none;
  appearance: none;
}

.hcpb-sub-root input.hcpb-sub-input:focus,
.hcpb-sub-root input.hcpb-sub-input:focus-visible {
  border-color: var(--hcpb-sub-blue) !important;
  box-shadow: 0 0 0 3px rgba(29, 78, 216, 0.14) !important;
}

.hcpb-sub-root input.hcpb-sub-input.is-error,
.hcpb-sub-root input.hcpb-sub-input.is-error:focus {
  border-color: #dc2626 !important;
  box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.12) !important;
}

.hcpb-sub-btn {
  appearance: none;
  margin-top: 6px;
  border: 0;
  border-radius: 10px;
  padding: 13px 16px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0;
  text-transform: none;
  cursor: pointer;
  background: var(--hcpb-sub-blue);
  color: #fff !important;
  transition: background 0.15s ease;
}

.hcpb-sub-btn:hover {
  background: var(--hcpb-sub-blue-deep);
}

.hcpb-sub-btn:disabled {
  opacity: 0.72;
  cursor: wait;
}

.hcpb-sub-skip {
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--hcpb-sub-muted);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  padding: 8px 4px 2px;
  text-align: center;
}

.hcpb-sub-skip:hover {
  color: var(--hcpb-sub-ink);
  text-decoration: underline;
}

.hcpb-sub-err {
  display: none;
  margin: 0;
  font-size: 13px;
  color: #b91c1c;
  font-weight: 600;
}

.hcpb-sub-err.is-show {
  display: block;
}

.hcpb-sub-fine {
  margin: 14px 0 0;
  font-size: 12px;
  line-height: 1.45;
  color: var(--hcpb-sub-muted);
}

.hcpb-sub-fine a {
  color: var(--hcpb-sub-blue);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.hcpb-sub-close {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 32px;
  height: 32px;
  border: 1px solid var(--hcpb-sub-line);
  border-radius: 8px;
  background: #fff;
  color: var(--hcpb-sub-muted) !important;
  font-size: 18px;
  line-height: 30px;
  cursor: pointer;
  padding: 0;
}

.hcpb-sub-close:hover {
  color: var(--hcpb-sub-ink) !important;
  border-color: #cbd5e1;
  background: #fff;
}

.hcpb-sub-success {
  display: none;
  padding: 36px 24px 28px;
  text-align: center;
}

.hcpb-sub-card.is-success .hcpb-sub-card__top,
.hcpb-sub-card.is-success .hcpb-sub-card__body {
  display: none;
}

.hcpb-sub-card.is-success .hcpb-sub-success {
  display: block;
}

.hcpb-sub-success__ico {
  width: 48px;
  height: 48px;
  margin: 0 auto 14px;
  border-radius: 50%;
  background: #ecfdf5;
  color: #047857;
  font: 700 20px/48px "Segoe UI", system-ui, sans-serif;
}

.hcpb-sub-success h3 {
  margin: 0 0 8px;
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--hcpb-sub-ink) !important;
}

.hcpb-sub-success p {
  margin: 0;
  color: var(--hcpb-sub-muted) !important;
  font-size: 0.9375rem;
  line-height: 1.5;
}

@media (prefers-reduced-motion: reduce) {
  .hcpb-sub-root,
  .hcpb-sub-card {
    transition: none;
  }
}