body {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  min-height: 100vh;
  font-family: 'Arial', sans-serif;
}
a {
  text-decoration: none;
}

.main-container {
  padding: 50px 20px;
  max-width: 1200px;
  margin: 0 auto;
}

.header {
  text-align: center;
  color: white;
  margin-bottom: 50px;
}

.header h1 {
  font-size: 3rem;
  font-weight: bold;
  margin-bottom: 10px;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.header p {
  font-size: 1.2rem;
  opacity: 0.9;
}

.content-box {
  background: white;
  border-radius: 15px;
  padding: 40px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
  margin-bottom: 30px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.feature-card {
  background: linear-gradient(145deg, #f8f9fa, #e9ecef);
  border-radius: 12px;
  padding: 30px;
  text-align: center;
  transition: transform 0.3s ease;
  border: 1px solid #dee2e6;
}

.feature-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.feature-icon {
  font-size: 3rem;
  margin-bottom: 20px;
  display: block;
}

.feature-card h3 {
  color: #2c3e50;
  margin-bottom: 15px;
  font-weight: bold;
}

.feature-card p {
  color: #6c757d;
  line-height: 1.6;
}

.btn-custom {
  background: linear-gradient(45deg, #667eea, #764ba2);
  color: white;
  border: none;
  padding: 12px 30px;
  border-radius: 25px;
  font-weight: bold;
  text-decoration: none;
  display: inline-block;
  margin-top: 15px;
  transition: all 0.3s ease;
}

.btn-custom:hover {
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
  color: white;
  text-decoration: none;
}

.stats-section {
  background: rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  padding: 30px;
  margin-top: 40px;
  text-align: center;
  color: white;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
  margin-top: 20px;
}

.stat-item {
  background: rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  padding: 20px;
}

.stat-number {
  font-size: 2.5rem;
  font-weight: bold;
  display: block;
}

.stat-label {
  font-size: 0.9rem;
  opacity: 0.8;
}

/* 메뉴 스타일 */
.menu-section {
  background: rgba(255, 255, 255, 0.95);
  border-radius: 15px;
  padding: 30px;
  margin-bottom: 30px;
}

.menu-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
}

.menu-item {
  background: linear-gradient(145deg, #f8f9fa, #e9ecef);
  border-radius: 10px;
  padding: 20px;
  text-align: center;
  transition: all 0.3s ease;
  border: 1px solid #dee2e6;
}

.menu-item:hover {
  transform: translateY(-3px);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.menu-item h4 {
  color: #2c3e50;
  margin-bottom: 10px;
  font-weight: bold;
}

.menu-item p {
  color: #6c757d;
  font-size: 0.9rem;
  margin-bottom: 15px;
}

.btn-menu {
  background: linear-gradient(45deg, #28a745, #20c997);
  color: white;
  border: none;
  padding: 8px 20px;
  border-radius: 20px;
  font-size: 0.9rem;
  text-decoration: none;
  display: inline-block;
  transition: all 0.3s ease;
}

.btn-menu:hover {
  transform: translateY(-1px);
  box-shadow: 0 3px 10px rgba(0, 0, 0, 0.2);
  color: white;
  text-decoration: none;
}

.btn-admin {
  background: linear-gradient(45deg, #dc3545, #fd7e14);
}

.btn-user {
  background: linear-gradient(45deg, #17a2b8, #6f42c1);
}
body {
  background: white;
  min-height: 100vh;
  font-family: 'Noto Sans KR', sans-serif;
  position: relative;
}

body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: url('../../../../_data/logo/background.jpg');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  background-attachment: fixed;
  opacity: 0.6;
  z-index: -1;
  pointer-events: none;
}

.login-container {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.login-card {
  background: white;
  border-radius: 15px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
  border: 1px solid #e1e5e9;
  width: 100%;
  max-width: 450px;
}

.login-body {
  padding: 40px 30px;
}

/* 로고 이미지 반응형 스타일 */
.login-body h2 img {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 0 auto;
}

/* img-responsive 클래스 추가 */
.img-responsive {
  max-width: 100%;
  height: auto;
  display: block;
}

.form-group {
  margin-bottom: 25px;
}

.form-group label {
  display: block;
  margin-bottom: 8px;
  font-weight: 500;
  color: #333;
  font-size: 0.9rem;
}

.form-control {
  width: 100%;
  padding: 12px 15px;
  border: 2px solid #e1e5e9;
  border-radius: 8px;
  font-size: 1rem;
  transition: all 0.3s ease;
  background: #f8f9fa;
}

.form-control:focus {
  outline: none;
  border-color: #202266;
  background: white;
  box-shadow: 0 0 0 3px rgba(32, 34, 102, 0.1);
}

.btn-login {
  width: 100%;
  padding: 15px;
  background: linear-gradient(135deg, #202266 0%, #1d2c7e 100%);
  border: none;
  border-radius: 8px;
  color: white;
  font-size: 1.1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  margin-top: 10px;
}

.btn-login:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 20px rgba(32, 34, 102, 0.3);
}

.login-footer {
  text-align: center;
  margin-top: 30px;
  padding-top: 20px;
  border-top: 1px solid #e1e5e9;
}

.login-footer a {
  color: #202266;
  text-decoration: none;
  font-size: 0.9rem;
  margin: 0 10px;
  transition: color 0.3s ease;
}

.login-footer a:hover {
  color: #1d2c7e;
  text-decoration: underline;
}

.user-type-select {
  width: 100%;
  padding: 12px 15px;
  border: 2px solid #e1e5e9;
  border-radius: 8px;
  font-size: 1rem;
  background: #f8f9fa;
  transition: all 0.3s ease;
}

.user-type-select:focus {
  outline: none;
  border-color: #202266;
  background: white;
  box-shadow: 0 0 0 3px rgba(32, 34, 102, 0.1);
}

.alert {
  padding: 12px 15px;
  border-radius: 8px;
  margin-bottom: 20px;
  font-size: 0.9rem;
}

.alert-danger {
  background-color: #f8d7da;
  border: 1px solid #f5c6cb;
  color: #721c24;
}

.alert-success {
  background-color: #d4edda;
  border: 1px solid #c3e6cb;
  color: #155724;
}

@media (max-width: 480px) {
  .login-body {
    padding: 30px 20px;
  }
}
/* 관리자 페이지 스타일 */
body {
  background-color: #f0f0f0;
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
}

.admin-container {
  display: flex;
  min-height: 100vh;
}

/* 사이드바 스타일 */
.sidebar {
  width: 280px;
  background: #1e293b;
  color: white;
  display: flex;
  flex-direction: column;
  position: fixed;
  height: 100vh;
  left: 0;
  top: 0;
  z-index: 1000;
}

.sidebar-header {
  padding: 1rem;
  border-bottom: 1px solid #334155;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

.logo i {
  color: #3b82f6;
  font-size: 1.5rem;
}

.user-info {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  font-size: 0.875rem;
  color: #94a3b8;
}

.user-name {
  font-weight: 500;
  color: white;
  font-size: 0.75rem;
}

.user-id {
  color: #3b82f6;
  font-weight: 600;
  font-size: 0.875rem;
}

.user-separator {
  color: #94a3b8;
}

/* 상단 네비게이션 */
.nav-bar {
  display: flex;
  background: #1e293b;
  color: white;
  padding: 1.3rem;
  border-bottom: 1px solid #334155;
}

.nav-logo {
  width: 50%;
}

.user-info-f {
  text-align: right;
  width: 50%;
}

/* 사이드바 네비게이션 */
.sidebar-nav {
  flex: 1;
  padding: 1rem 0;
}

.nav-menu {
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-item {
  margin: 0;
}

.nav-sub-item {
  margin-left: 65px;
  margin-bottom: 5px;
}

.nav-sub-link:hover {
  color: white;
}

.nav-sub-link {
  color: #94a3b8;
  transition: all 0.3s ease;
}

.nav-sub-link.active {
  color: white;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.875rem 1.5rem;
  color: #94a3b8;
  text-decoration: none;
  transition: all 0.3s ease;
  border-left: 3px solid transparent;
}

.nav-link:hover {
  background: #334155;
  color: white;
  border-left-color: #3b82f6;
}

.nav-link.active {
  background: #334155;
  color: white;
  border-left-color: #3b82f6;
}

.nav-link i {
  width: 1.25rem;
  text-align: center;
}

/* 서브메뉴 */
.sub-menu {
  list-style: none;
  margin: 0;
  padding: 0;
  background: #0f172a;
  display: none;
}

.sub-menu li {
  margin: 0;
}

.sub-menu a {
  display: block;
  padding: 0.625rem 1.5rem 0.625rem 3.5rem;
  color: #64748b;
  text-decoration: none;
  font-size: 0.875rem;
  transition: all 0.3s ease;
}

.sub-menu a:hover {
  background: #1e293b;
  color: white;
}

/* 사이드바 푸터 */
.sidebar-footer {
  padding: 1rem 1.5rem;
  border-top: 1px solid #334155;
}

.logout-btn {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0;
  color: #94a3b8;
  text-decoration: none;
  font-size: 0.875rem;
  transition: color 0.3s ease;
}

.logout-btn:hover {
  color: white;
}

.logout-btn i {
  width: 1rem;
}

/* 회원정보변경 버튼 스타일 */
.profile-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  color: #94a3b8;
  text-decoration: none;
  font-size: 0.875rem;
  transition: all 0.3s ease;
  background: none;
  border: 1px solid #334155;
  border-radius: 6px;
  cursor: pointer;
}

.profile-btn:hover {
  color: white;
  background: #334155;
  border-color: #3b82f6;
}

/* 메인 콘텐츠 */
.main-content {
  flex: 1;
  background: #f8fafc;
  min-height: 100vh;
}

.content-header {
  background: white;
  padding: 2rem;
  border-bottom: 1px solid #e2e8f0;
}

.content-header h1 {
  margin: 0 0 0.5rem 0;
  font-size: 1.5rem;
  font-weight: 600;
  color: #1e293b;
}

.content-header p {
  margin: 0;
  color: #64748b;
  font-size: 0.875rem;
}

.content-body {
  padding: 2rem;
}

/* 통계 카드 */
.stat-card {
  background: white;
  border-radius: 12px;
  padding: 1.5rem;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
  border: 1px solid #e2e8f0;
  display: flex;
  align-items: center;
  gap: 1rem;
  transition: all 0.3s ease;
}

.stat-card:hover {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  transform: translateY(-2px);
}

.stat-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  color: white;
}

.stat-card:nth-child(1) .stat-icon {
  background: linear-gradient(135deg, #3b82f6, #1d4ed8);
}

.stat-card:nth-child(2) .stat-icon {
  background: linear-gradient(135deg, #10b981, #059669);
}

.stat-card:nth-child(3) .stat-icon {
  background: linear-gradient(135deg, #f59e0b, #d97706);
}

.stat-card:nth-child(4) .stat-icon {
  background: linear-gradient(135deg, #ef4444, #dc2626);
}

.stat-content h3 {
  margin: 0 0 0.25rem 0;
  font-size: 1.5rem;
  font-weight: 600;
  color: #1e293b;
}

.stat-content p {
  margin: 0;
  color: #64748b;
  font-size: 0.875rem;
}

/* 카드 스타일 */
.card {
  background: white;
  border-radius: 12px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
  border: 1px solid #e2e8f0;
  margin-bottom: 1.5rem;
}

.card-header {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid #e2e8f0;
  background: #f8fafc;
}

.card-header h5 {
  margin: 0;
  font-weight: 600;
  color: #1e293b;
}

.card-body {
  padding: 1.5rem;
}

/* 활동 아이템 */
.activity-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 1rem 0;
  border-bottom: 1px solid #f1f5f9;
}

.activity-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.activity-icon {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #3b82f6;
  color: white;
  font-size: 0.875rem;
}

.activity-content h6 {
  margin: 0 0 0.25rem 0;
  font-weight: 600;
  color: #1e293b;
}

.activity-content p {
  margin: 0 0 0.5rem 0;
  color: #64748b;
  font-size: 0.875rem;
}

.activity-content small {
  font-size: 0.75rem;
}

/* 일정 아이템 */
.schedule-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 1rem 0;
  border-bottom: 1px solid #f1f5f9;
}

.schedule-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.schedule-icon {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #10b981;
  color: white;
  font-size: 0.875rem;
}

.schedule-content h6 {
  margin: 0 0 0.25rem 0;
  font-weight: 600;
  color: #1e293b;
}

.schedule-content p {
  margin: 0 0 0.5rem 0;
  color: #64748b;
  font-size: 0.875rem;
}

.schedule-status {
  display: inline-block;
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 500;
}

.schedule-status.expected {
  background: #dbeafe;
  color: #1d4ed8;
}

.schedule-status.urgent {
  background: #fef3c7;
  color: #d97706;
}

/* 빠른 관리 메뉴 */
.quick-menu-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
}

.quick-menu-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  padding: 1.5rem;
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: 12px;
  text-decoration: none;
  color: #374151;
  transition: all 0.3s ease;
}

.quick-menu-item:hover {
  background: #3b82f6;
  color: white;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

.quick-menu-item i {
  font-size: 1.5rem;
}

.quick-menu-item span {
  font-size: 0.875rem;
  font-weight: 500;
  text-align: center;
}

/* 반응형 디자인 */
@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
    transition: transform 0.3s ease;
  }

  .sidebar.open {
    transform: translateX(0);
  }

  .main-content {
    margin-left: 0;
  }

  .content-body {
    padding: 1rem;
  }

  .quick-actions {
    grid-template-columns: 1fr;
  }
}

body {
  background: white;
  min-height: 100vh;
  font-family: 'Noto Sans KR', sans-serif;
}

.signup-container {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.signup-card {
  background: white;
  border-radius: 15px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
  border: 1px solid #e1e5e9;
  width: 100%;
  max-width: 500px;
}

.signup-body {
  padding: 30px 25px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  margin-bottom: 8px;
  font-weight: 500;
  color: #333;
  font-size: 0.9rem;
}

.form-control {
  width: 100%;
  padding: 10px 12px;
  border: 2px solid #e1e5e9;
  border-radius: 8px;
  font-size: 0.95rem;
  transition: all 0.3s ease;
  background: #f8f9fa;
}

.form-control:focus {
  outline: none;
  border-color: #202266;
  background: white;
  box-shadow: 0 0 0 3px rgba(32, 34, 102, 0.1);
}

.form-control.error {
  border-color: #dc3545;
}

.error-message {
  color: #dc3545;
  font-size: 0.8rem;
  margin-top: 5px;
}

.success-message {
  color: #28a745;
  font-size: 0.8rem;
  margin-top: 5px;
}

.btn-signup {
  width: 100%;
  padding: 12px;
  background: linear-gradient(135deg, #202266 0%, #1d2c7e 100%);
  border: none;
  border-radius: 8px;
  color: white;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  margin-top: 10px;
}

.btn-signup:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 20px rgba(32, 34, 102, 0.3);
}

.btn-outline {
  background: white;
  border: 2px solid #202266;
  color: #202266;
  padding: 8px 16px;
  border-radius: 6px;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all 0.3s ease;
}

.btn-outline:hover {
  background: #202266;
  color: white;
}

.role-options {
  display: flex;
  gap: 20px;
  margin-top: 10px;
}

.role-option {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
}

.role-option input[type='radio'] {
  margin: 0;
}

.university-select {
  width: 100%;
  padding: 10px 12px;
  border: 2px solid #e1e5e9;
  border-radius: 8px;
  font-size: 0.95rem;
  background: #f8f9fa;
  transition: all 0.3s ease;
}

.university-select:focus {
  outline: none;
  border-color: #202266;
  background: white;
  box-shadow: 0 0 0 3px rgba(32, 34, 102, 0.1);
}

.username-check {
  display: flex;
  gap: 10px;
}

.username-check .form-control {
  flex: 1;
}

.separator {
  height: 1px;
  background: #e1e5e9;
  margin: 20px 0;
}

.checkbox-group {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 15px;
}

.checkbox-group input[type='checkbox'] {
  margin: 0;
}

.close {
  color: #aaa;
  font-size: 28px;
  font-weight: bold;
  cursor: pointer;
}

.close:hover {
  color: #000;
}

.alert {
  padding: 12px 15px;
  border-radius: 8px;
  margin-bottom: 20px;
  font-size: 0.9rem;
}

.alert-danger {
  background-color: #f8d7da;
  border: 1px solid #f5c6cb;
  color: #721c24;
}

.alert-success {
  background-color: #d4edda;
  border: 1px solid #c3e6cb;
  color: #155724;
}

@media (max-width: 480px) {
  .signup-body {
    padding: 30px 20px;
  }

  .role-options {
    flex-direction: column;
    gap: 10px;
  }
}
.modal-content {
  border-radius: 12px;
  border: none;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
}

.modal-header {
  background: linear-gradient(135deg, #1e293b, #334155);
  color: white;
  border-radius: 12px 12px 0 0;
  border-bottom: 1px solid #334155;
}

.modal-header .btn-close {
  filter: invert(1);
}

.form-label {
  font-weight: 600;
  color: #1e293b;
  font-size: 0.875rem;
}

.form-control {
  border: 1px solid #e2e8f0;
  border-radius: 8px;
  padding: 0.75rem;
  font-size: 0.875rem;
}

.form-control:focus {
  border-color: #3b82f6;
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

@media (max-width: 768px) {
  .login-container {
    padding: 15px;
  }

  .login-card {
    max-width: 100%;
    margin: 0 10px;
  }

  .login-body {
    padding: 30px 20px;
  }

  .login-body h2 img {
    max-width: 80%;
    margin: 0 auto 20px auto;
  }
}

@media (max-width: 480px) {
  .login-body {
    padding: 25px 15px;
  }

  .login-body h2 img {
    max-width: 70%;
    margin: 0 auto 15px auto;
  }

  .form-group label {
    font-size: 0.85rem;
  }

  .form-control {
    padding: 10px 12px;
    font-size: 0.9rem;
  }

  .btn-login {
    padding: 12px;
    font-size: 1rem;
  }
}

/* img-responsive */
.img-responsive {
  max-width: 100%;
  height: auto;
}