/* ============================================================
   NURSEMATE CHAT — Florence (tokens in tokens.css)
   Premium minimalist shell · desktop + mobile tuned separately
   ============================================================ */

html,
body {
  height: 100%;
}

body.chat-page {
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  background:
    radial-gradient(ellipse 55% 40% at 78% -5%, rgba(77, 159, 255, 0.12), transparent 70%),
    radial-gradient(ellipse 45% 35% at 12% 100%, rgba(56, 210, 192, 0.08), transparent 70%),
    var(--bg-0);
}

/* ---------- Shell ---------- */
.chat-shell {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--s-6) var(--s-4) var(--s-7);
}

.chat-app {
  width: 100%;
  max-width: min(1600px, 95vw);
  height: min(80vh, 780px);
  min-height: 520px;
  display: flex;
  flex-direction: column;
  background: var(--bg-1);
  border: 1px solid var(--border-strong);
  border-radius: var(--r-xl);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}

/* ---------- Header ---------- */
.chat-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--s-3);
  padding: 14px 20px;
  background: var(--glass);
  border-bottom: 1px solid var(--border);
  -webkit-backdrop-filter: blur(16px) saturate(1.5);
  backdrop-filter: blur(16px) saturate(1.5);
}

.chat-brand {
  display: inline-flex;
  align-items: center;
  gap: var(--s-2);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: -0.01em;
  color: var(--text-1);
}

.chat-brand img {
  width: 24px;
  height: 24px;
  object-fit: contain;
  border-radius: 7px;
}

.chat-status {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 12px;
  color: var(--text-3);
}

.chat-status .pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--success);
  box-shadow: 0 0 0 0 rgba(52, 201, 143, 0.6);
  animation: pulse 2.2s var(--ease) infinite;
}

@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(52, 201, 143, 0.55); }
  70% { box-shadow: 0 0 0 7px rgba(52, 201, 143, 0); }
  100% { box-shadow: 0 0 0 0 rgba(52, 201, 143, 0); }
}

.chat-actions {
  display: flex;
  align-items: center;
  gap: var(--s-2);
}

/* ---------- Model toggle (Cloud ↔ MedGemma) ---------- */
.model-toggle {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  padding: 3px;
  border-radius: 999px;
  background: var(--bg-1);
  border: 1px solid var(--border);
  flex-shrink: 0;
}

.model-toggle-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  border: none;
  border-radius: 999px;
  background: transparent;
  color: var(--text-3);
  font-size: 12.5px;
  font-weight: 600;
  line-height: 1;
  cursor: pointer;
  transition: background 0.18s var(--ease), color 0.18s var(--ease), box-shadow 0.18s var(--ease);
}

.model-toggle-btn svg {
  flex-shrink: 0;
}

.model-toggle-btn:hover {
  color: var(--text-1);
}

.model-toggle-btn.active {
  background: var(--accent-gradient, linear-gradient(135deg, #4d9fff, #38d2c0));
  color: #fff;
  box-shadow: 0 2px 8px rgba(77, 159, 255, 0.35);
}

.model-toggle-btn.active svg {
  color: #fff;
}

/* Label for the active engine — shown subtly next to the toggle on wide screens */
.model-toggle-hint {
  font-size: 12px;
  color: var(--text-3);
  white-space: nowrap;
}

/* Toggle disabled state — visible but not interactive (switch coming soon) */
.model-toggle-btn:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

.model-toggle-btn.active:disabled {
  opacity: 1;
}

/* ---------- Announcement banner ---------- */
.announcement-banner {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin: 14px 20px 0;
  padding: 13px 14px;
  border-radius: var(--r-md, 14px);
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-left: 3px solid transparent;
  border-image: linear-gradient(180deg, #4d9fff, #38d2c0) 1;
  border-left-color: #38d2c0;
}

.announcement-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  border-radius: 10px;
  background: linear-gradient(135deg, rgba(77, 159, 255, 0.16), rgba(56, 210, 192, 0.16));
  color: #38d2c0;
}

.announcement-text {
  flex: 1;
  margin: 0;
  font-size: 13.5px;
  line-height: 1.55;
  color: var(--text-2);
}

.announcement-text strong {
  display: block;
  margin-bottom: 2px;
  color: var(--text-1);
  font-size: 14px;
}

.announcement-close {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  width: 26px;
  height: 26px;
  padding: 0;
  border: none;
  border-radius: 8px;
  background: transparent;
  color: var(--text-3);
  cursor: pointer;
  transition: background 0.15s var(--ease), color 0.15s var(--ease);
}

.announcement-close:hover {
  background: var(--bg-1);
  color: var(--text-1);
}

.chat-icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-width: 38px;
  height: 38px;
  padding: 0 14px;
  border-radius: var(--r-pill);
  border: 1px solid var(--border);
  background: var(--glass);
  color: var(--text-2);
  font-family: var(--font);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--t-fast) var(--ease), color var(--t-fast) var(--ease),
    border-color var(--t-fast) var(--ease), transform var(--t-fast) var(--ease-spring);
}

.chat-icon-btn svg {
  flex-shrink: 0;
}

.chat-icon-btn:hover {
  background: var(--glass-strong);
  color: var(--text-1);
  border-color: var(--border-strong);
}

.chat-icon-btn:active {
  transform: scale(0.95);
}

.chat-icon-btn[disabled],
.chat-icon-btn.disabled {
  opacity: 0.4;
  pointer-events: none;
}

/* Overflow menu */
.menu-wrap {
  position: relative;
}

.collapsible-tools {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  z-index: 50;
  min-width: 180px;
  padding: 6px;
  background: var(--bg-1);
  border: 1px solid var(--border-strong);
  border-radius: var(--r);
  box-shadow: var(--shadow-md);
  opacity: 0;
  transform: translateY(-6px);
  pointer-events: none;
  transition: opacity var(--t-fast) var(--ease), transform var(--t-fast) var(--ease);
}

.collapsible-tools.visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.collapsible-tools button {
  display: flex;
  align-items: center;
  gap: 9px;
  width: 100%;
  text-align: left;
  padding: 10px 12px;
  border: none;
  border-radius: var(--r-sm);
  background: transparent;
  color: var(--text-2);
  font-family: var(--font);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: background var(--t-fast) var(--ease), color var(--t-fast) var(--ease);
}

.collapsible-tools button:hover {
  background: var(--glass-strong);
  color: var(--text-1);
}

/* ---------- Suggested prompts ---------- */
.prompt-chips {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-2);
  padding: 14px 20px 0;
}

.prompt-chip {
  padding: 9px 16px;
  border-radius: var(--r-pill);
  border: 1px solid var(--border);
  background: var(--glass);
  color: var(--text-2);
  font-family: var(--font);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--t-fast) var(--ease);
}

.prompt-chip:hover {
  border-color: var(--accent);
  color: var(--text-1);
  background: var(--accent-soft);
}

/* ---------- Messages ---------- */
.message-container {
  flex: 1;
  overflow-y: auto;
  padding: var(--s-6) var(--s-5) var(--s-4);
  display: flex;
  flex-direction: column;
  gap: var(--s-5);
  scroll-behavior: smooth;
}

#message-list {
  display: flex;
  flex-direction: column;
  gap: var(--s-5);
  width: 100%;
}

#response-container {
  display: none;
}

.message {
  max-width: min(84%, 920px);
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.3s var(--ease), transform 0.3s var(--ease);
}

.message.show {
  opacity: 1;
  transform: translateY(0);
}

/* User bubbles */
.user-message {
  align-self: flex-end;
}

.user-message p {
  margin: 0;
  padding: 13px 20px;
  background: var(--gradient);
  color: #fff;
  border-radius: 20px;
  border-bottom-right-radius: 7px;
  font-size: 15px;
  line-height: 1.55;
  box-shadow: 0 6px 20px rgba(77, 159, 255, 0.28);
  word-break: break-word;
}

/* Assistant bubbles */
.assistant-message {
  align-self: flex-start;
  position: relative;
  display: flex;
  flex-direction: column;
  padding-left: 0;
}

.message-content {
  padding: 14px 20px;
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: 20px;
  border-bottom-left-radius: 7px;
  font-size: 15px;
  line-height: 1.65;
  color: var(--text-1);
  word-break: break-word;
}

/* Thinking state */
.thinking .thinking-spinner {
  display: flex;
  align-items: center;
  gap: var(--s-2);
  padding: 15px 20px;
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: 20px;
  border-bottom-left-radius: 7px;
}

.thinking .dot1,
.thinking .dot2,
.thinking .dot3 {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  animation: think-bounce 1.2s var(--ease) infinite;
}

.thinking .dot2 { animation-delay: 0.15s; }
.thinking .dot3 { animation-delay: 0.3s; }

@keyframes think-bounce {
  0%, 60%, 100% { transform: translateY(0); opacity: 0.5; }
  30% { transform: translateY(-5px); opacity: 1; }
}

.thinking-text {
  margin-left: var(--s-1);
  font-size: 13px;
  color: var(--text-3);
  transition: opacity 0.3s var(--ease);
}

/* Typewriter cursor */
.is-streaming .message-content::after {
  content: "";
  display: inline-block;
  width: 8px;
  height: 1.1em;
  margin-left: 3px;
  vertical-align: text-bottom;
  background: var(--accent);
  animation: blink 0.8s step-end infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

/* Copy button */
.copy-button {
  align-self: flex-start;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 9px;
  padding: 7px 14px;
  border: 1px solid var(--border);
  border-radius: var(--r-pill);
  background: var(--glass);
  color: var(--text-3);
  font-family: var(--font);
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--t-fast) var(--ease);
}

.copy-button:hover {
  color: var(--text-1);
  border-color: var(--border-strong);
  background: var(--glass-strong);
}

.copy-button.copied {
  color: var(--success);
  border-color: rgba(52, 201, 143, 0.4);
}

.copy-text-button {
  align-self: flex-start;
  margin-top: 9px;
}

.copy-text-button img {
  display: none;
}

.copy-text-button::after {
  content: "Copy";
  font-family: var(--font);
  font-size: 12px;
  font-weight: 600;
  color: var(--text-3);
}

/* Glisten */
.glistening {
  position: absolute;
  inset: 0;
  pointer-events: none;
  border-radius: inherit;
  overflow: hidden;
  background: linear-gradient(110deg, transparent 30%, rgba(255, 255, 255, 0.12) 50%, transparent 70%);
  animation: glisten 0.8s var(--ease);
}

@keyframes glisten {
  from { transform: translateX(-100%); }
  to { transform: translateX(100%); }
}

/* ---------- Markdown ---------- */
.message-content h1,
.message-content h2,
.message-content h3,
.message-content h4 {
  margin: 14px 0 8px;
  line-height: 1.3;
  letter-spacing: -0.01em;
}

.message-content h1 { font-size: 1.35em; }
.message-content h2 { font-size: 1.2em; }
.message-content h3 { font-size: 1.08em; }
.message-content h4 { font-size: 1em; }

.message-content p {
  margin: 8px 0;
}

.message-content ul,
.message-content ol {
  margin: 8px 0;
  padding-left: 22px;
}

.message-content li {
  margin: 4px 0;
}

.message-content code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  background: var(--glass-strong);
  padding: 2px 6px;
  border-radius: 6px;
}

.message-content pre {
  background: var(--bg-0);
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  padding: 14px;
  overflow-x: auto;
  margin: 10px 0;
}

.message-content pre code {
  background: transparent;
  padding: 0;
}

.message-content blockquote {
  margin: 10px 0;
  padding: 4px 14px;
  border-left: 3px solid var(--accent);
  color: var(--text-2);
}

.message-content table {
  border-collapse: collapse;
  margin: 10px 0;
  font-size: 0.92em;
  width: 100%;
}

.message-content th,
.message-content td {
  border: 1px solid var(--border);
  padding: 8px 12px;
  text-align: left;
}

.message-content th {
  background: var(--glass);
  font-weight: 600;
}

.message-content hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 16px 0;
}

.message-content a {
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- Input area ---------- */
.message-input-section {
  padding: 14px 20px 18px;
  border-top: 1px solid var(--border);
  background: var(--glass);
  -webkit-backdrop-filter: blur(16px) saturate(1.5);
  backdrop-filter: blur(16px) saturate(1.5);
}

.form-group {
  margin: 0;
}

.message-input-wrap {
  display: flex;
  align-items: flex-end;
  gap: var(--s-2);
  padding: 8px 8px 8px 20px;
  background: var(--bg-2);
  border: 1px solid var(--border-strong);
  border-radius: var(--r-lg);
  transition: border-color var(--t-fast) var(--ease), box-shadow var(--t-fast) var(--ease);
}

.message-input-wrap:focus-within {
  border-color: rgba(77, 159, 255, 0.55);
  box-shadow: 0 0 0 4px var(--accent-soft);
}

.message-input {
  display: flex;
  align-items: flex-end;
  gap: var(--s-2);
  width: 100%;
}

.message-input-box {
  flex: 1;
  resize: none;
  border: none;
  background: transparent;
  color: var(--text-1);
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.5;
  padding: 9px 0;
  max-height: 140px;
  outline: none;
}

.message-input-box::placeholder {
  color: var(--text-3);
}

.message-input button {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-width: 44px;
  height: 42px;
  padding: 0 22px;
  border: none;
  border-radius: var(--r-pill);
  background: var(--gradient);
  color: #fff;
  font-family: var(--font);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: transform var(--t-fast) var(--ease-spring), box-shadow var(--t-fast) var(--ease), opacity var(--t-fast) var(--ease);
}

.message-input button:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(77, 159, 255, 0.35);
}

.message-input button:active {
  transform: scale(0.96);
}

.message-input button:disabled {
  opacity: 0.5;
  pointer-events: none;
}

.char-count {
  position: absolute;
  right: 12px;
  bottom: -4px;
  font-size: 11px;
  color: var(--text-3);
}

/* ---------- Toast ---------- */
.chat-toast {
  position: fixed;
  left: 50%;
  bottom: 28px;
  transform: translateX(-50%) translateY(16px);
  z-index: 200;
  padding: 11px 20px;
  background: var(--bg-1);
  border: 1px solid var(--border-strong);
  border-radius: var(--r-pill);
  color: var(--text-1);
  font-family: var(--font);
  font-size: 14px;
  font-weight: 500;
  box-shadow: var(--shadow-md);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s var(--ease), transform 0.25s var(--ease-spring);
}

.chat-toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ============================================================
   MOBILE — full-height immersive, tuned separately
   ============================================================ */
@media (max-width: 1024px) {
  html,
  body {
    height: 100%;
    overflow: hidden;
  }

  body.chat-page {
    height: 100dvh;
    overflow: hidden;
  }

  /* Hide the site footer on mobile chat — chat is the only view */
  .chat-page .footer-wrap {
    display: none;
  }

  /* Hide the site header too — the chat app IS the mobile view */
  .chat-page .site-header {
    display: none;
  }

  .chat-shell {
    padding: 0;
    justify-content: flex-start;
    flex: 1;
    min-height: 0;
    height: 100dvh;
  }

  .chat-app {
    height: 100%;
    min-height: 0;
    max-width: none;
    border-radius: 0;
    border: none;
    box-shadow: none;
  }

  /* Only the message list scrolls — everything else is pinned */
  .chat-app > .message-container {
    flex: 1;
    min-height: 0;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
  }

  .chat-header {
    padding: 10px 14px;
  }

  .model-toggle-btn {
    padding: 4px 9px;
    font-size: 11.5px;
    gap: 4px;
  }

  .model-toggle-btn svg {
    width: 13px;
    height: 13px;
  }

  /* Sub-640px: the header row is tight (brand + toggle + actions) — drop the
     toggle labels to icons only so nothing overflows off-screen. The active
     gradient pill still shows which engine is selected. */
  @media (max-width: 640px) {
    .model-toggle-btn span {
      display: none;
    }
    .model-toggle-btn {
      padding: 5px 8px;
    }
  }

  .chat-brand {
    font-size: 14px;
  }

  .chat-status {
    display: none;
  }

  .chat-icon-btn {
    min-width: 40px;
    height: 40px;
    padding: 0 12px;
  }

  .chat-icon-btn .btn-label {
    display: none;
  }

  .prompt-chips {
    flex-wrap: nowrap;
    overflow-x: auto;
    padding: 12px 14px 0;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }

  .prompt-chips::-webkit-scrollbar {
    display: none;
  }

  .prompt-chip {
    flex-shrink: 0;
    padding: 10px 16px;
  }

  .message-container {
    padding: var(--s-5) var(--s-4) var(--s-4);
    gap: var(--s-4);
  }

  .message {
    max-width: 92%;
  }

  .message-input-section {
    padding: 10px 12px calc(12px + env(safe-area-inset-bottom));
  }

  .message-input-wrap {
    padding: 6px 6px 6px 16px;
    border-radius: var(--r-lg);
  }

  /* 16px minimum prevents iOS Safari auto-zoom when focusing the input */
  .message-input-box {
    font-size: 16px;
  }

  .message-input button {
    min-width: 44px;
    height: 44px;
    padding: 0 18px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001s !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001s !important;
  }
}