/* Universe - 컴포넌트 스타일 */

/* 버튼 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-sm) var(--space-lg);
  border: none;
  border-radius: var(--radius-md);
  font-size: var(--font-md);
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition-normal);
  position: relative;
  overflow: hidden;
  min-height: 44px; /* 터치 친화적 */
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
  transition: left 0.5s;
}

.btn:hover::before {
  left: 100%;
}

.btn-primary {
  background: var(--primary-gradient);
  color: var(--text-primary);
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  color: var(--text-primary);
}

.btn-secondary {
  background: var(--card-bg);
  color: var(--text-primary);
  border: 1px solid rgba(255,255,255,0.2);
}

.btn-secondary:hover {
  background: var(--glass-bg);
  border-color: var(--text-accent);
  color: var(--text-primary);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid rgba(255,255,255,0.1);
}

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

.btn-login-required {
  background: rgba(255, 193, 7, 0.1);
  color: #ffc107;
  border: 1px solid rgba(255, 193, 7, 0.3);
  position: relative;
  overflow: hidden;
}

.btn-login-required::before {
  content: '🔒';
  margin-right: var(--space-xs);
}

.btn-login-required:hover {
  background: rgba(255, 193, 7, 0.2);
  border-color: #ffc107;
  color: #ffc107;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(255, 193, 7, 0.3);
}

.btn-coming-soon {
  background: rgba(156, 163, 175, 0.1);
  color: #9ca3af;
  border: 1px solid rgba(156, 163, 175, 0.3);
  cursor: not-allowed;
  position: relative;
}

.btn-coming-soon::before {
  content: '🚀';
  margin-right: var(--space-xs);
}

.btn-coming-soon:hover {
  background: rgba(156, 163, 175, 0.2);
  border-color: #9ca3af;
  color: #9ca3af;
  transform: none;
  box-shadow: none;
}

/* 카드 */
.card {
  background: var(--card-gradient);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  box-shadow: var(--shadow-lg);
  transition: var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
  border-color: rgba(255,255,255,0.2);
}

.card-header {
  margin-bottom: var(--space-lg);
}

.card-title {
  font-size: var(--font-xl);
  font-weight: 600;
  margin-bottom: var(--space-sm);
}

.card-description {
  color: var(--text-muted);
  font-size: var(--font-sm);
}

/* 입력 필드 */
.input {
  width: 100%;
  padding: var(--space-sm) var(--space-md);
  background: var(--glass-bg);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: var(--font-md);
  transition: var(--transition-fast);
}

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

.input:focus {
  outline: none;
  border-color: var(--text-accent);
  box-shadow: 0 0 0 2px rgba(100, 255, 218, 0.2);
}

/* 검색 바 */
.search-container {
  position: relative;
  max-width: 500px;
  margin: 0 auto;
}

.search-input {
  padding-left: 3rem;
  padding-right: var(--space-md);
}

.search-icon {
  position: absolute;
  left: var(--space-md);
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
}

/* 그리드 */
.grid {
  display: grid;
  gap: var(--space-lg);
}

.grid-1 { grid-template-columns: 1fr; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .grid-4,
  .grid-3,
  .grid-2 { 
    grid-template-columns: 1fr; 
  }
}

/* 네비게이션 */
.nav {
  padding: var(--space-lg) 0;
  border-bottom: 1px solid rgba(255,255,255,0.1);
  margin-bottom: var(--space-xl);
  position: relative;
}

.nav-wrapper {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  width: 100%;
  position: relative;
}

.nav-left {
  justify-self: start;
  display: flex;
  align-items: center;
}

.nav-center {
  justify-self: center;
  display: flex;
  align-items: center;
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10;
}

.nav-right {
  justify-self: end;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-md);
  width: 100%;
}

.nav-logo {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  transition: var(--transition-normal);
}

.nav-logo:hover {
  transform: scale(1.05);
  box-shadow: var(--shadow-glow);
}

.nav-title {
  font-size: var(--font-2xl);
  font-weight: 700;
  color: var(--text-primary);
  background: linear-gradient(135deg, #fff 0%, #64ffda 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  white-space: nowrap;
}

/* 모바일 네비게이션 */
@media (max-width: 768px) {
  .nav-wrapper {
    grid-template-columns: auto 1fr auto;
    gap: var(--space-sm);
  }
  
  .nav-center {
    position: static;
    transform: none;
    justify-self: center;
  }
  
  .nav-logo {
    width: 40px;
    height: 40px;
  }
  
  .nav-title {
    font-size: var(--font-xl);
  }
  
  .nav-right {
    gap: var(--space-sm);
    justify-content: flex-end;
  }
}

/* 로딩 애니메이션 */
.spinner {
  width: 20px;
  height: 20px;
  border: 2px solid rgba(255,255,255,0.3);
  border-top: 2px solid var(--text-accent);
  border-radius: var(--radius-full);
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* 뱃지 */
.badge {
  display: inline-flex;
  align-items: center;
  padding: var(--space-xs) var(--space-sm);
  background: var(--accent-gradient);
  color: var(--text-primary);
  font-size: var(--font-xs);
  font-weight: 500;
  border-radius: var(--radius-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-right: var(--space-xs);
  margin-bottom: var(--space-xs);
}

.badge:last-child {
  margin-right: 0;
}

/* 태그 컨테이너 */
.feature-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin: var(--space-md) 0;
}

/* 로그인이 필요한 상태 표시 */
.login-required {
  position: relative;
  opacity: 0.6;
  pointer-events: none;
}

.login-required::after {
  content: '로그인 필요';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: var(--primary-gradient);
  color: var(--text-primary);
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-sm);
  font-size: var(--font-xs);
  font-weight: 500;
  z-index: 10;
}

/* 사용자 프로필 */
.user-profile {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-xs) var(--space-sm);
  background: var(--glass-bg);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(10px);
  transition: var(--transition-normal);
  position: relative;
  cursor: pointer;
}

.user-profile:hover {
  border-color: var(--text-accent);
  box-shadow: 0 0 20px rgba(100, 255, 218, 0.2);
}

.dropdown-arrow {
  font-size: 10px;
  color: var(--text-muted);
  transition: transform 0.3s ease;
}

.user-profile.active .dropdown-arrow {
  transform: rotate(180deg);
}

.user-dropdown {
  position: absolute;
  top: 100%;
  right: 0;
  background: var(--card-bg);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-md);
  backdrop-filter: blur(20px);
  min-width: 160px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all 0.3s ease;
  z-index: 1000;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.user-profile.active .user-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(5px);
}

.dropdown-item {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm);
  color: var(--text-primary);
  transition: var(--transition-normal);
  cursor: pointer;
}

.dropdown-item:hover {
  background: rgba(255,255,255,0.05);
  color: var(--text-accent);
}

.dropdown-item:first-child {
  border-radius: var(--radius-md) var(--radius-md) 0 0;
}

.dropdown-item:last-child {
  border-radius: 0 0 var(--radius-md) var(--radius-md);
}

.dropdown-icon {
  font-size: var(--font-sm);
}

.user-avatar {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-full);
  overflow: hidden;
  border: 2px solid var(--text-accent);
  flex-shrink: 0;
}

.user-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.user-details {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  min-width: 0;
}

.user-name {
  font-size: var(--font-sm);
  font-weight: 500;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.user-provider {
  font-size: var(--font-xs);
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

@media (max-width: 768px) {
  .user-details {
    display: none;
  }
  
  .user-profile {
    padding: var(--space-xs);
  }
}

/* 모달 */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: var(--z-modal);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-md);
}

.modal-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(5px);
}

.modal-content {
  position: relative;
  background: var(--card-bg);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(20px);
  max-width: 90vw;
  max-height: 90vh;
  overflow: hidden;
  animation: modalShow 0.3s ease-out;
}

@keyframes modalShow {
  from {
    opacity: 0;
    transform: scale(0.9) translateY(-20px);
  }
  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-lg);
  border-bottom: 1px solid rgba(255,255,255,0.1);
  background: var(--glass-bg);
}

.modal-header h3 {
  margin: 0;
  color: var(--text-primary);
  font-size: var(--font-lg);
}

.modal-close {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 24px;
  cursor: pointer;
  padding: var(--space-xs);
  border-radius: var(--radius-sm);
  transition: var(--transition-normal);
  line-height: 1;
}

.modal-close:hover {
  color: var(--text-primary);
  background: rgba(255,255,255,0.1);
}

.modal-body {
  padding: var(--space-lg);
  max-height: 70vh;
  overflow-y: auto;
}

/* 친구 다이얼로그 전용 스타일 */
.friend-dialog-content {
  width: 600px;
}

.friend-search-section,
.friend-list-section,
.friend-code-section {
  margin-bottom: var(--space-xl);
}

.friend-search-section:last-child,
.friend-list-section:last-child,
.friend-code-section:last-child {
  margin-bottom: 0;
}

.search-container {
  display: flex;
  gap: var(--space-sm);
  align-items: center;
}

.search-container .input {
  flex: 1;
}

.friend-item {
  display: flex;
  align-items: center;
  padding: var(--space-md);
  background: var(--glass-bg);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-sm);
  transition: var(--transition-normal);
}

.friend-item:hover {
  border-color: var(--text-accent);
  box-shadow: 0 4px 20px rgba(100, 255, 218, 0.1);
}

.friend-item:last-child {
  margin-bottom: 0;
}

.friend-avatar {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  overflow: hidden;
  border: 2px solid var(--text-accent);
  flex-shrink: 0;
  margin-right: var(--space-md);
}

.friend-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.friend-info {
  flex: 1;
  min-width: 0;
}

.friend-name {
  font-size: var(--font-md);
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: var(--space-xs);
}

.friend-provider {
  font-size: var(--font-sm);
  color: var(--text-muted);
}

.friend-actions {
  display: flex;
  gap: var(--space-sm);
  margin-left: var(--space-md);
}

.friend-code-result {
  background: var(--glass-bg);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  text-align: center;
}

.friend-code-display {
  font-family: 'Courier New', monospace;
  font-size: var(--font-lg);
  font-weight: 600;
  color: var(--text-accent);
  background: rgba(100, 255, 218, 0.1);
  padding: var(--space-md);
  border-radius: var(--radius-sm);
  margin: var(--space-md) 0;
  word-break: break-all;
}

.qr-code {
  margin: var(--space-md) 0;
}

.qr-code canvas {
  border-radius: var(--radius-sm);
}

.code-expiry {
  font-size: var(--font-sm);
  color: var(--text-muted);
  margin-top: var(--space-sm);
}

.empty-state {
  text-align: center;
  padding: var(--space-xl);
  color: var(--text-muted);
}

.loading-state {
  text-align: center;
  padding: var(--space-lg);
}

.spinner {
  width: 32px;
  height: 32px;
  border: 3px solid rgba(255,255,255,0.1);
  border-top: 3px solid var(--text-accent);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin: 0 auto;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

@media (max-width: 768px) {
  .friend-dialog-content {
    width: 100%;
    margin: var(--space-sm);
  }
  
  .modal-body {
    max-height: 60vh;
  }
  
  .search-container {
    flex-direction: column;
  }
  
  .search-container .input {
    width: 100%;
  }
  
  .friend-item {
    flex-direction: column;
    text-align: center;
  }
  
  .friend-avatar {
    margin-right: 0;
    margin-bottom: var(--space-sm);
  }
  
  .friend-actions {
    margin-left: 0;
    margin-top: var(--space-sm);
    justify-content: center;
  }
}