/* ─── Layout ───────────────────────────────────────────────────────────── */
.chat-page {
  display: flex;
  flex-direction: column;
  height: 100vh;
  background: var(--gray-50);
  overflow: hidden;
}

/* ─── Header ────────────────────────────────────────────────────────────── */
.chat-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 16px;
  height: 56px;
  background: white;
  border-bottom: 1px solid var(--gray-200);
  flex-shrink: 0;
  z-index: 10;
}

.header-back-btn {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: none;
  background: transparent;
  cursor: pointer;
  color: var(--gray-600);
  border-radius: 8px;
  transition: background 0.15s;
  flex-shrink: 0;
}

.header-back-btn:hover {
  background: var(--gray-100);
}

.header-back-btn svg {
  width: 20px;
  height: 20px;
}

.header-center {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.header-app-name {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  line-height: 1;
}

.header-patient-name {
  font-size: 1rem;
  font-weight: 600;
  color: var(--gray-900);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  line-height: 1.3;
}

.header-clear-btn {
  border: 1px solid var(--gray-300);
  background: transparent;
  border-radius: 8px;
  padding: 6px 14px;
  font-size: 0.8125rem;
  color: var(--gray-600);
  cursor: pointer;
  transition: all 0.15s;
  flex-shrink: 0;
}

.header-clear-btn:hover {
  background: var(--gray-100);
  border-color: var(--gray-400);
}

/* ─── Messages ──────────────────────────────────────────────────────────── */
.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 20px 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.chat-empty {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--gray-400);
  text-align: center;
  gap: 12px;
  margin: auto;
}

.chat-empty-icon svg {
  width: 40px;
  height: 40px;
  color: var(--gray-300);
}

.chat-empty p {
  font-size: 0.9375rem;
  max-width: 280px;
  line-height: 1.5;
}

.message-row {
  display: flex;
  max-width: 720px;
  width: 100%;
}

.message-row.user {
  align-self: flex-end;
  justify-content: flex-end;
}

.message-row.assistant {
  align-self: flex-start;
  justify-content: flex-start;
}

/* ─── Bubbles ────────────────────────────────────────────────────────────── */
.bubble {
  max-width: 85%;
  border-radius: 16px;
  padding: 12px 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.user-bubble {
  background: var(--primary);
  color: white;
  border-bottom-right-radius: 4px;
}

.assistant-bubble {
  background: white;
  border: 1px solid var(--gray-200);
  border-bottom-left-radius: 4px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
  max-width: 90%;
}

.bubble-text {
  font-size: 0.9375rem;
  line-height: 1.6;
  white-space: pre-wrap;
  word-break: break-word;
  margin: 0;
}

.user-bubble .bubble-text {
  color: white;
}

.assistant-text {
  color: var(--gray-800);
}

/* Image in user bubble */
.message-image {
  width: 100%;
  max-width: 260px;
  border-radius: 10px;
  display: block;
}

/* ─── Thinking indicator ─────────────────────────────────────────────────── */
.thinking {
  display: flex;
  gap: 4px;
  padding: 4px 0;
}

.dot {
  width: 7px;
  height: 7px;
  background: var(--gray-400);
  border-radius: 50%;
  animation: bounce 1.2s infinite;
}

.dot:nth-child(2) { animation-delay: 0.2s; }
.dot:nth-child(3) { animation-delay: 0.4s; }

@keyframes bounce {
  0%, 60%, 100% { transform: translateY(0); }
  30% { transform: translateY(-6px); }
}

/* ─── Input bar ──────────────────────────────────────────────────────────── */
.chat-input-bar {
  background: white;
  border-top: 1px solid var(--gray-200);
  padding: 12px 16px;
  flex-shrink: 0;
}

.image-preview-container {
  position: relative;
  display: inline-block;
  margin-bottom: 10px;
}

.image-preview-thumb {
  width: 72px;
  height: 72px;
  object-fit: cover;
  border-radius: 10px;
  border: 2px solid var(--gray-200);
  display: block;
}

.remove-image-btn {
  position: absolute;
  top: -8px;
  right: -8px;
  width: 22px;
  height: 22px;
  background: var(--gray-700);
  color: white;
  border: none;
  border-radius: 50%;
  font-size: 0.875rem;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}

.input-row {
  display: flex;
  align-items: flex-end;
  gap: 8px;
}

.attach-btn {
  width: 38px;
  height: 38px;
  border: 1px solid var(--gray-300);
  background: transparent;
  border-radius: 10px;
  cursor: pointer;
  color: var(--gray-500);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all 0.15s;
}

.attach-btn:hover:not(:disabled) {
  background: var(--gray-100);
  border-color: var(--gray-400);
  color: var(--gray-700);
}

.attach-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.attach-btn svg {
  width: 18px;
  height: 18px;
}

.chat-input {
  flex: 1;
  border: 1px solid var(--gray-300);
  border-radius: 10px;
  padding: 9px 14px;
  font-size: 0.9375rem;
  font-family: inherit;
  resize: none;
  line-height: 1.5;
  max-height: 160px;
  overflow-y: auto;
  transition: border-color 0.15s;
}

.chat-input:focus {
  outline: none;
  border-color: var(--primary);
}

.chat-input:disabled {
  background: var(--gray-50);
  color: var(--gray-400);
}

.send-btn {
  width: 38px;
  height: 38px;
  background: var(--primary);
  color: white;
  border: none;
  border-radius: 10px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: background 0.15s;
}

.send-btn:hover:not(:disabled) {
  background: var(--primary-hover);
}

.send-btn:disabled {
  background: var(--gray-300);
  cursor: not-allowed;
}

.send-btn svg {
  width: 18px;
  height: 18px;
}