/**
 * input.css - 하단 입력창, 자동 높이 조절 textarea, 전송/중지 토글 버튼, 글자수 카운터
 */

.chat-input-area {
  padding: 12px 20px 16px 20px;
  background-color: var(--bg-app);
  border-top: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
  z-index: 10;
  min-width: 0;
}

.input-container {
  width: 100%;
  max-width: 860px;
  min-width: 0;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-normal);
  border-radius: var(--radius-lg);
  padding: 10px 14px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  box-shadow: var(--shadow-sm);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.input-container:focus-within {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 1px var(--border-focus), var(--shadow-md);
}

.input-textarea {
  width: 100%;
  min-height: 38px;
  max-height: var(--input-max-height);
  resize: none;
  font-size: 14px;
  line-height: 1.5;
  color: var(--text-primary);
  background-color: transparent;
  padding: 4px 0;
  overflow-y: auto;
}

.input-textarea::placeholder {
  color: var(--text-muted);
}

.input-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 6px;
  border-top: 1px solid var(--border-subtle);
  user-select: none;
  min-width: 0;
}

.input-hints {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 11px;
  color: var(--text-muted);
}

.char-counter {
  font-family: var(--font-mono);
  white-space: nowrap;
  flex-shrink: 0;
}

.keyboard-shortcut-hint {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.input-actions,
.thinking-controls {
  display: flex;
  align-items: center;
  gap: 6px;
}

.input-actions {
  flex-shrink: 0;
}

.thinking-toggle,
.reasoning-effort-select {
  height: 32px;
  border: 1px solid var(--border-normal);
  border-radius: var(--radius-sm);
  background-color: var(--bg-surface-elevated);
  color: var(--text-secondary);
  font-size: 12px;
  font-weight: 600;
  transition: background-color var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast), box-shadow var(--transition-fast);
}

.thinking-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 0 10px;
  white-space: nowrap;
}

.thinking-toggle:hover:not(:disabled),
.reasoning-effort-select:hover:not(:disabled) {
  border-color: var(--border-focus);
  color: var(--text-primary);
  background-color: var(--bg-hover);
}

.thinking-toggle.active {
  border-color: var(--accent-primary);
  color: var(--accent-text);
  background-color: var(--accent-subtle);
}

.thinking-toggle:focus-visible,
.reasoning-effort-select:focus-visible {
  outline: 2px solid var(--border-focus);
  outline-offset: 2px;
}

.thinking-toggle:disabled,
.reasoning-effort-select:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

.reasoning-effort-select {
  min-width: 66px;
  padding: 0 24px 0 9px;
  cursor: pointer;
}

.reasoning-effort-select[hidden] {
  display: none;
}

/* 전송 / 중지 버튼 */
.submit-btn {
  height: 32px;
  padding: 0 14px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  font-weight: 600;
  gap: 6px;
  transition: all var(--transition-fast);
}

/* 기본 전송 상태 */
.submit-btn.send-mode {
  background-color: var(--accent-primary);
  color: #ffffff;
}

.submit-btn.send-mode:hover:not(:disabled) {
  background-color: var(--accent-primary-hover);
  box-shadow: var(--shadow-sm);
}

.submit-btn.send-mode:disabled {
  background-color: var(--bg-hover);
  color: var(--text-muted);
  border: 1px solid var(--border-subtle);
}

/* 생성 중지 상태 */
.submit-btn.stop-mode {
  background-color: var(--danger-primary);
  color: #ffffff;
  animation: pulse-stop 2s infinite ease-in-out;
}

.submit-btn.stop-mode:hover {
  background-color: var(--danger-hover);
}

@keyframes pulse-stop {
  0%, 100% { box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.4); }
  50% { box-shadow: 0 0 0 6px rgba(239, 68, 68, 0); }
}

.stop-icon-box {
  width: 10px;
  height: 10px;
  background-color: currentColor;
  border-radius: 1px;
}

@media (max-width: 520px) {
  .input-footer {
    gap: 8px;
  }

  .input-hints {
    min-width: 0;
  }

  /* Loaded after layout.css, so keep the mobile visibility rule here too. */
  .keyboard-shortcut-hint {
    display: none;
  }

  .thinking-toggle {
    padding: 0 8px;
  }

  .reasoning-effort-select {
    min-width: 62px;
  }

  .submit-btn {
    white-space: nowrap;
  }
}

@media (max-width: 380px) {
  .thinking-toggle span {
    display: none;
  }

  .thinking-toggle {
    width: 32px;
    padding: 0;
  }
}