.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.program-chat-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.28);
  opacity: 0;
  pointer-events: none;
  transition: opacity 180ms ease;
  z-index: 36;
}

.program-chat-backdrop.is-open {
  opacity: 1;
  pointer-events: auto;
}

.program-chat-fab {
  position: fixed;
  right: 1rem;
  bottom: 1rem;
  z-index: 39;
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  border: 0;
  border-radius: 999px;
  padding: 0.78rem 1rem;
  background: linear-gradient(135deg, #0f766e 0%, #115e59 100%);
  color: #fff;
  box-shadow: 0 18px 36px rgba(15, 118, 110, 0.28);
  cursor: pointer;
  transition: transform 180ms ease, opacity 180ms ease, box-shadow 180ms ease;
}

.program-chat-fab:hover {
  transform: translateY(-1px);
  box-shadow: 0 22px 42px rgba(15, 118, 110, 0.34);
}

.program-chat-fab[hidden] {
  display: none;
}

.program-chat-fab-icon {
  display: inline-flex;
  font-size: 0.9rem;
}

.program-chat-fab-label {
  font: inherit;
  font-size: 0.9rem;
  font-weight: 600;
}

.program-chat-panel {
  position: fixed;
  right: 1rem;
  bottom: 1rem;
  width: min(400px, calc(100vw - 2rem));
  height: min(76vh, 760px);
  display: flex;
  flex-direction: column;
  border-radius: 22px;
  background:
    radial-gradient(circle at top left, rgba(249, 115, 22, 0.14), transparent 42%),
    linear-gradient(180deg, rgba(255, 251, 244, 0.98), rgba(255, 255, 255, 0.98));
  border: 1px solid rgba(188, 197, 214, 0.95);
  box-shadow: 0 28px 60px rgba(15, 23, 42, 0.2);
  transform: translateY(22px) scale(0.97);
  opacity: 0;
  pointer-events: none;
  transition: transform 220ms ease, opacity 220ms ease;
  z-index: 40;
  overflow: hidden;
}

.program-chat-panel.is-open {
  transform: translateY(0) scale(1);
  opacity: 1;
  pointer-events: auto;
}

.program-chat-panel[aria-hidden="true"] {
  visibility: hidden;
}

.program-chat-panel.is-expanded {
  left: 50%;
  right: auto;
  top: 50%;
  bottom: auto;
  width: min(960px, calc(100vw - 4rem));
  height: min(88vh, 920px);
  transform: translate(-50%, -50%) scale(0.97);
  border-radius: 28px;
}

.program-chat-panel.is-open.is-expanded {
  transform: translate(-50%, -50%) scale(1);
}

.program-chat-header {
  display: grid;
  gap: 0.75rem;
  padding: 1rem 1rem 0.75rem;
  border-bottom: 1px solid rgba(209, 213, 219, 0.8);
}

.program-chat-header-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.75rem;
}

.program-chat-window-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex: 0 0 auto;
}

.program-chat-title-wrap {
  display: grid;
  gap: 0.25rem;
}

.program-chat-kicker {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #0f766e;
}

.program-chat-title {
  margin: 0;
  font-size: 1.02rem;
}

.program-chat-description {
  margin: 0;
  color: #566273;
  font-size: 0.9rem;
  line-height: 1.45;
  max-width: 60ch;
}

.program-chat-window-button {
  border: 0;
  background: rgba(226, 232, 240, 0.9);
  color: #1f2a3a;
  width: 36px;
  height: 36px;
  border-radius: 999px;
  cursor: pointer;
  font-size: 1.1rem;
  flex: 0 0 auto;
}

.program-chat-window-button:hover {
  background: rgba(212, 220, 231, 0.98);
}

.program-chat-expand {
  font-size: 0.92rem;
}

.program-chat-panel.is-expanded .program-chat-expand {
  background: rgba(214, 242, 239, 0.95);
  color: #0f5b56;
}

.program-chat-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.program-chat-badges {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.program-chat-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  border-radius: 999px;
  padding: 0.32rem 0.62rem;
  font-size: 0.74rem;
  border: 1px solid rgba(197, 205, 219, 0.9);
  background: rgba(248, 250, 252, 0.96);
  color: #314056;
}

.program-chat-badge.is-research {
  background: rgba(214, 242, 239, 0.95);
  border-color: rgba(128, 203, 196, 0.95);
  color: #0f5b56;
}

.program-chat-reset {
  border: 0;
  background: transparent;
  color: #0f4c81;
  font: inherit;
  cursor: pointer;
  padding: 0;
  font-size: 0.84rem;
}

.program-chat-reset:hover {
  text-decoration: underline;
}

.program-chat-messages {
  flex: 1 1 auto;
  overflow-y: auto;
  padding: 0.95rem 1rem 0.6rem;
  display: grid;
  gap: 0.75rem;
  align-content: start;
  background: linear-gradient(180deg, rgba(248, 250, 252, 0.56), rgba(255, 255, 255, 0.16));
}

.program-chat-panel.is-expanded .program-chat-messages {
  padding: 1.1rem 1.2rem 0.8rem;
}

.program-chat-message {
  display: grid;
  gap: 0.42rem;
}

.program-chat-message.is-user {
  justify-items: end;
}

.program-chat-bubble {
  margin: 0;
  padding: 0.76rem 0.86rem;
  border-radius: 16px;
  max-width: 92%;
  line-height: 1.52;
  font-size: 0.92rem;
  box-shadow: 0 10px 26px rgba(30, 41, 59, 0.08);
}

.program-chat-bubble > :first-child {
  margin-top: 0;
}

.program-chat-bubble > :last-child {
  margin-bottom: 0;
}

.program-chat-bubble p,
.program-chat-bubble ul,
.program-chat-bubble ol,
.program-chat-bubble pre,
.program-chat-bubble blockquote,
.program-chat-bubble h1,
.program-chat-bubble h2,
.program-chat-bubble h3 {
  margin: 0.7rem 0 0;
}

.program-chat-bubble ul,
.program-chat-bubble ol {
  padding-left: 1.2rem;
}

.program-chat-bubble li + li {
  margin-top: 0.2rem;
}

.program-chat-bubble a {
  color: inherit;
  text-decoration: underline;
}

.program-chat-bubble code {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.88em;
  padding: 0.08rem 0.28rem;
  border-radius: 6px;
  background: rgba(148, 163, 184, 0.14);
}

.program-chat-bubble pre {
  overflow-x: auto;
  padding: 0.7rem 0.8rem;
  border-radius: 12px;
  background: rgba(15, 23, 42, 0.92);
  color: #e2e8f0;
}

.program-chat-bubble pre code {
  padding: 0;
  background: transparent;
  color: inherit;
}

.program-chat-bubble blockquote {
  padding-left: 0.8rem;
  border-left: 3px solid rgba(15, 118, 110, 0.34);
  color: #475569;
}

.program-chat-bubble h1,
.program-chat-bubble h2,
.program-chat-bubble h3 {
  line-height: 1.3;
}

.program-chat-bubble h1 {
  font-size: 1.04rem;
}

.program-chat-bubble h2 {
  font-size: 0.99rem;
}

.program-chat-bubble h3 {
  font-size: 0.95rem;
}

.program-chat-message.is-loading .program-chat-bubble {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
}

.program-chat-message.is-assistant .program-chat-bubble {
  background: rgba(255, 255, 255, 0.98);
  border: 1px solid rgba(215, 223, 236, 0.96);
  color: #182333;
}

.program-chat-message.is-user .program-chat-bubble {
  background: linear-gradient(135deg, #0f766e 0%, #115e59 100%);
  color: #fff;
}

.program-chat-welcome .program-chat-bubble {
  background: linear-gradient(135deg, rgba(240, 253, 250, 0.95), rgba(255, 251, 235, 0.95));
  border: 1px solid rgba(167, 243, 208, 0.9);
}

.program-chat-loader {
  width: 0.95rem;
  height: 0.95rem;
  flex: 0 0 0.95rem;
  border-radius: 999px;
  border: 2px solid rgba(15, 76, 129, 0.16);
  border-top-color: #0f4c81;
  animation: program-chat-spin 0.8s linear infinite;
}

@keyframes program-chat-spin {
  from {
    transform: rotate(0deg);
  }

  to {
    transform: rotate(360deg);
  }
}

@media (prefers-reduced-motion: reduce) {
  .program-chat-loader {
    animation: none;
  }
}

.program-chat-sources {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  max-width: 92%;
}

.program-chat-source {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  border-radius: 999px;
  padding: 0.24rem 0.58rem;
  text-decoration: none;
  border: 1px solid rgba(203, 213, 225, 0.95);
  background: rgba(255, 255, 255, 0.96);
  color: #1d4f80;
  font-size: 0.76rem;
}

.program-chat-source:hover {
  text-decoration: underline;
}

.program-chat-suggestions {
  padding: 0 1rem 0.75rem;
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.program-chat-suggestions[hidden] {
  display: none;
}

.program-chat-panel.is-expanded .program-chat-suggestions {
  padding: 0 1.2rem 0.85rem;
}

.program-chat-suggestion {
  border: 1px solid rgba(173, 185, 203, 0.96);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.96);
  color: #22314f;
  font: inherit;
  font-size: 0.81rem;
  cursor: pointer;
  padding: 0.42rem 0.75rem;
}

.program-chat-suggestion:hover {
  border-color: #8bb3d8;
  color: #0f4c81;
}

.program-chat-form {
  padding: 0 1rem 0.85rem;
  display: grid;
  gap: 0.6rem;
}

.program-chat-panel.is-expanded .program-chat-form {
  padding: 0 1.2rem 0.95rem;
}

.program-chat-input-wrap {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 0.6rem;
  align-items: end;
}

.program-chat-textarea {
  min-height: 88px;
  max-height: 180px;
  width: 100%;
  resize: vertical;
  border-radius: 16px;
  border: 1px solid rgba(191, 201, 216, 0.96);
  background: rgba(255, 255, 255, 0.98);
  padding: 0.82rem 0.9rem;
  font: inherit;
  color: #1c2534;
}

.program-chat-submit {
  border: 0;
  border-radius: 999px;
  padding: 0.76rem 1rem;
  background: linear-gradient(135deg, #f97316 0%, #ea580c 100%);
  color: #fff;
  font: inherit;
  cursor: pointer;
  box-shadow: 0 12px 28px rgba(249, 115, 22, 0.28);
}

.program-chat-submit:disabled,
.program-chat-textarea:disabled {
  cursor: not-allowed;
  opacity: 0.68;
}

.program-chat-privacy-note {
  margin: -0.15rem 0 0;
  padding: 0 1rem 0.8rem;
  color: #64748b;
  font-size: 0.72rem;
  line-height: 1.45;
}

.program-chat-status {
  margin: 0;
  padding: 0 1rem 1rem;
  color: #5c6778;
  font-size: 0.8rem;
  min-height: 1.2rem;
}

.program-chat-panel.is-expanded .program-chat-status {
  padding: 0 1.2rem 1.1rem;
}

.program-chat-status.is-error {
  color: #b42318;
}

.program-chat-disclaimer {
  margin: 0;
  padding: 0 1rem 0.75rem;
  font-size: 0.66rem;
  color: #94a3b8;
  text-align: center;
}

.program-chat-panel.is-expanded .program-chat-privacy-note,
.program-chat-panel.is-expanded .program-chat-disclaimer {
  padding-left: 1.2rem;
  padding-right: 1.2rem;
}

@media (max-width: 820px) {
  .program-chat-fab {
    right: 0.5rem;
    bottom: 0.5rem;
  }

  .program-chat-panel {
    left: auto;
    right: 0.5rem;
    bottom: 0.5rem;
    width: min(400px, calc(100vw - 1rem));
    height: min(84vh, 760px);
  }

  .program-chat-panel.is-expanded {
    left: 0.5rem;
    right: 0.5rem;
    top: auto;
    bottom: 0.5rem;
    width: auto;
    height: min(84vh, 760px);
    transform: translateY(22px) scale(0.97);
    border-radius: 22px;
  }

  .program-chat-panel.is-open.is-expanded {
    transform: translateY(0) scale(1);
  }
}

@media (max-width: 640px) {
  .program-chat-fab {
    left: 50%;
    right: auto;
    bottom: 0.75rem;
    transform: translateX(-50%);
    padding: 0.8rem 1rem;
  }

  .program-chat-fab:hover {
    transform: translateX(-50%);
  }

  .program-chat-panel {
    inset: auto 0 0 0;
    width: 100%;
    height: min(88vh, 100vh);
    border-radius: 22px 22px 0 0;
    bottom: 0;
  }

  .program-chat-panel.is-expanded {
    inset: auto 0 0 0;
    width: 100%;
    height: min(88vh, 100vh);
    transform: translateY(22px) scale(0.97);
    border-radius: 22px 22px 0 0;
  }

  .program-chat-panel.is-open.is-expanded {
    transform: translateY(0) scale(1);
  }

  .program-chat-bubble,
  .program-chat-sources {
    max-width: 100%;
  }

  .program-chat-input-wrap {
    grid-template-columns: 1fr;
  }

  .program-chat-expand {
    display: none;
  }
}