/* Button Components */
/* ========================================== */

/* 기본 버튼 스타일 */
.btn {
  padding: 10px 16px;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  white-space: nowrap;
}

/* Primary 버튼 */
.btn--primary {
  background: var(--color-primary);
  color: #fff;
  box-shadow: 0 6px 16px rgba(26, 115, 232, 0.3);
}

.btn--primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 10px 20px rgba(26, 115, 232, 0.35);
}

/* Accent 버튼 */
.btn--accent {
  background: var(--color-accent);
  color: #fff;
  box-shadow: 0 6px 16px rgba(255, 112, 67, 0.3);
}

.btn--accent:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  box-shadow: none;
}

/* Ghost 버튼 */
.btn--ghost {
  background: transparent;
  border: 1px solid var(--color-border);
  color: var(--color-text);
}

.btn--ghost:hover {
  background: var(--color-bg-light);
  border-color: var(--color-primary);
}

/* Small 버튼 */
.btn--small {
  padding: 6px 10px;
  font-size: 0.85rem;
}

/* Airport Return 버튼 */
.btn--airport-return {
  background: #ff9800;
  color: white;
  border: 1px solid #ff9800;
  box-shadow: 0 4px 12px rgba(255, 152, 0, 0.3);
}

.btn--airport-return:hover {
  background: #f57c00;
  border-color: #f57c00;
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(255, 152, 0, 0.4);
}

.btn--airport-return:active {
  transform: translateY(0);
  box-shadow: 0 2px 8px rgba(255, 152, 0, 0.3);
}

/* Summary Actions */
.summary-actions {
  margin-top: 16px;
}

.summary-actions__row {
  display: flex;
  gap: 8px;
  margin-bottom: 12px;
}

.summary-actions__row:last-child {
  margin-bottom: 0;
}

.summary-actions .btn {
  flex: 1;
  min-width: 0;
  font-size: 0.9rem;
  padding: 8px 12px;
}

.summary-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-text);
  margin: 0;
  text-align: left;
}

.btn-icon {
  margin-right: 6px;
  font-size: 0.9rem;
}

/* Emergency 버튼 */
.btn--emergency {
  background: #f44336;
  color: white;
  border: 1px solid #f44336;
  animation: emergency-pulse 2s infinite;
}

.btn--emergency:hover {
  background: #d32f2f;
  border-color: #d32f2f;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(244, 67, 54, 0.3);
}

.btn--emergency:active {
  transform: translateY(0);
}

/* Action 버튼 */
.btn-action {
  background: #2196f3;
  color: white;
  border: none;
  padding: 8px 16px;
  border-radius: 6px;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-action:hover {
  background: #1976d2;
}

/* Emergency Mode 버튼 */
.emergency-mode .btn--primary {
  background: #f44336;
  border-color: #f44336;
}

.emergency-mode .btn--primary:hover {
  background: #d32f2f;
  border-color: #d32f2f;
}

/* Recommended 버튼 */
.recommended .btn-action {
  background: #4caf50;
}

.recommended .btn-action:hover {
  background: #388e3c;
}

/* 헤더 액션 버튼 */
.header-actions .btn {
  font-size: 0.9rem;
  padding: 8px 16px;
}

/* 네비게이션 종료 버튼 */
.navigation-exit-container .btn {
  padding: 12px 32px;
  font-size: 1rem;
  font-weight: 600;
  background: rgba(239, 68, 68, 0.95);
  color: white;
}

.navigation-exit-container .btn:hover {
  background: rgba(220, 38, 38, 0.95);
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(239, 68, 68, 0.4);
}

/* 플래너 단계 액션 버튼 */
.planner-step__actions .btn {
  min-width: 120px;
}

/* 2-3단계에서 이전/다음 버튼이 함께 있을 때의 레이아웃 */
.planner-step__actions:has(.btn--ghost) {
  justify-content: space-between;
}

/* Waypoint 아이템 액션 버튼 */
.waypoint-item__actions .btn--small {
  padding: 4px 8px;
  font-size: 0.8rem;
  min-width: 50px;
  flex: 1;
}

/* Emergency 버튼 애니메이션 */
@keyframes emergency-pulse {
  0%, 100% {
    box-shadow: 0 0 0 0 rgba(244, 67, 54, 0.7);
  }
  50% {
    box-shadow: 0 0 0 10px rgba(244, 67, 54, 0);
  }
}

/* 반응형 디자인 */
@media (max-width: 768px) {
  .btn {
    width: 100%;
    max-width: 200px;
  }
  
  .planner-step__actions .btn {
    width: 100%;
  }
  
  .waypoint-item__actions .btn--small {
    padding: 3px 6px;
    font-size: 0.75rem;
    min-width: 40px;
  }
}

/* PC 화면 최적화 */
@media (min-width: 1024px) {
  .btn {
    font-size: 1rem;
    padding: 12px 16px;
  }
}