/* Chat Input Component Styles */
.chat-input {
  padding: 14px 20px;
  padding-bottom: max(14px, env(safe-area-inset-bottom));
  background: var(--surface2);
  border-top: 1px solid var(--border);
  flex-shrink: 0;
  position: relative;
  transition: border-color 0.4s var(--ease-out), box-shadow 0.4s var(--ease-out);
}

.chat-input--streaming {
  border-top-color: var(--primary);
  box-shadow: 0 -4px 24px rgba(108,92,231,0.12), inset 0 1px 0 rgba(108,92,231,0.08);
}

.chat-input--streaming::before {
  content: '';
  position: absolute;
  top: -2px;
  left: 10%;
  width: 80%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--primary-light), var(--primary), var(--primary-light), transparent);
  background-size: 200% 100%;
  animation: inputGlow 2s ease-in-out infinite;
  border-radius: 2px;
}

.chat-input__wrapper {
  display: flex;
  gap: 10px;
  align-items: flex-end;
}

.chat-input__textarea {
  flex: 1;
  min-width: 0;
  width: 100%;
  padding: 14px 20px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  font-size: 15px;
  font-family: inherit;
  line-height: 1.5;
  resize: none;
  min-height: 52px;
  max-height: 240px;
  background: var(--surface);
  color: var(--text);
  transition: all 0.25s var(--ease-out);
}

.chat-input__textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(108,92,231,0.1), 0 4px 20px rgba(0,0,0,0.2);
}

.chat-input__textarea::placeholder {
  color: var(--text-muted);
}

.chat-input__textarea:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.chat-input__send-btn {
  flex-shrink: 0;
  background: linear-gradient(135deg, var(--primary) 0%, #8B7CF6 100%);
  color: white;
  border: none;
  padding: 13px 26px;
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.3px;
  transition: all 0.25s var(--ease-out);
  position: relative;
  overflow: hidden;
  box-shadow: 0 4px 14px rgba(108,92,231,0.25);
}

.chat-input__send-btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, transparent 0%, rgba(255,255,255,0.12) 50%, transparent 100%);
  opacity: 0;
  transition: opacity 0.25s;
}

.chat-input__send-btn:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(108,92,231,0.45);
}

.chat-input__send-btn:hover:not(:disabled)::after {
  opacity: 1;
}

.chat-input__send-btn:active:not(:disabled) {
  transform: translateY(0) scale(0.97);
  transition: all 0.08s;
}

.chat-input__send-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  filter: grayscale(20%);
}

.chat-input__send-btn--hide {
  display: none;
}

.chat-input__stop-btn {
  display: none;
  flex-shrink: 0;
  background: rgba(255,82,82,0.12);
  border: 1px solid rgba(255,82,82,0.25);
  color: #FF8A80;
  padding: 13px 20px;
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.3px;
  transition: all 0.25s var(--ease-out);
  position: relative;
  overflow: hidden;
  animation: stopPulse 1.8s ease-in-out infinite;
}

.chat-input__stop-btn--show {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.chat-input__stop-btn:hover {
  background: rgba(255,82,82,0.2);
  border-color: rgba(255,82,82,0.4);
  transform: translateY(-1px);
}

.chat-input__stop-btn:active {
  transform: scale(0.96);
  transition: all 0.08s;
}

/* Responsive */
@media (max-width: 600px) {
  .chat-input {
    padding: 10px 12px max(10px, env(safe-area-inset-bottom));
  }

  .chat-input__wrapper {
    gap: 8px;
    align-items: flex-end;
  }

  .chat-input__textarea {
    min-height: 48px;
    max-height: 32dvh;
    padding: 12px 14px;
    font-size: 16px;
  }

  .chat-input__send-btn,
  .chat-input__stop-btn {
    min-width: 58px;
    min-height: 48px;
    padding: 12px 14px;
  }
}

@media (max-width: 360px) {
  .chat-input__wrapper {
    flex-wrap: wrap;
  }

  .chat-input__send-btn,
  .chat-input__stop-btn {
    width: 100%;
  }
}