/* 공통 스타일 */

/* 전체 레이아웃 */
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f8f9fa;
    margin: 0;
    padding: 0;
    min-height: 100vh;
}

/* 네비게이션 바 */
.navbar {
    background-color: #343a40 !important;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.navbar-brand {
    font-weight: 600;
    font-size: 1.25rem;
}

.navbar-nav .nav-link {
    color: rgba(255,255,255,0.8) !important;
    transition: color 0.3s ease;
}

.navbar-nav .nav-link:hover {
    color: #fff !important;
}

/* 메인 컨테이너 */
.main-container {
    padding: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

/* 카드 스타일 */
.card {
    border: none;
    border-radius: 0.5rem;
    box-shadow: 0 0.125rem 0.25rem rgba(0,0,0,0.075);
    margin-bottom: 1.5rem;
}

.card-header {
    background-color: #fff;
    border-bottom: 1px solid #dee2e6;
    font-weight: 600;
    padding: 1rem 1.25rem;
}

/* 폼 스타일 */
.form-control {
    border-radius: 0.375rem;
    border: 1px solid #ced4da;
    transition: border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
}

.form-control:focus {
    border-color: #86b7fe;
    box-shadow: 0 0 0 0.25rem rgba(13, 110, 253, 0.25);
}

.form-label {
    font-weight: 500;
    margin-bottom: 0.5rem;
}

/* 버튼 스타일 */
.btn {
    border-radius: 0.375rem;
    font-weight: 500;
    padding: 0.5rem 1rem;
    transition: all 0.15s ease-in-out;
}

.btn-primary {
    background-color: #0d6efd;
    border-color: #0d6efd;
}

.btn-primary:hover {
    background-color: #0b5ed7;
    border-color: #0a58ca;
}

.btn-secondary {
    background-color: #6c757d;
    border-color: #6c757d;
}

.btn-secondary:hover {
    background-color: #5c636a;
    border-color: #565e64;
}

.btn-danger {
    background-color: #dc3545;
    border-color: #dc3545;
}

.btn-danger:hover {
    background-color: #bb2d3b;
    border-color: #b02a37;
}

/* 로그인 페이지 스타일 */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.login-card {
    max-width: 400px;
    width: 100%;
    margin: 1rem;
}

.login-header {
    text-align: center;
    margin-bottom: 2rem;
}

.login-header h2 {
    color: #343a40;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.login-header p {
    color: #6c757d;
    margin: 0;
}

/* 검색 폼 스타일 */
.search-form {
    background-color: #fff;
    padding: 1.5rem;
    border-radius: 0.5rem;
    box-shadow: 0 0.125rem 0.25rem rgba(0,0,0,0.075);
    margin-bottom: 1.5rem;
}

.search-form .row {
    align-items: end;
}

/* 그리드 컨테이너 */
.grid-container {
    background-color: #fff;
    border-radius: 0.5rem;
    box-shadow: 0 0.125rem 0.25rem rgba(0,0,0,0.075);
    overflow: hidden;
}

.grid-header {
    padding: 1rem 1.25rem;
    background-color: #f8f9fa;
    border-bottom: 1px solid #dee2e6;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.grid-title {
    font-weight: 600;
    margin: 0;
    color: #343a40;
}

.grid-content {
    height: 400px;
    padding: 1rem;
}

/* 모달 스타일 */
.modal-content {
    border: none;
    border-radius: 0.5rem;
    box-shadow: 0 0.5rem 1rem rgba(0,0,0,0.15);
}

.modal-header {
    border-bottom: 1px solid #dee2e6;
    padding: 1rem 1.25rem;
}

.modal-title {
    font-weight: 600;
    color: #343a40;
}

.modal-body {
    padding: 1.25rem;
}

.modal-footer {
    border-top: 1px solid #dee2e6;
    padding: 1rem 1.25rem;
}

/* 알림 메시지 */
.alert {
    border: none;
    border-radius: 0.5rem;
    padding: 0.75rem 1.25rem;
    margin-bottom: 1rem;
}

.alert-success {
    background-color: #d1e7dd;
    color: #0f5132;
    border-left: 4px solid #198754;
}

.alert-danger {
    background-color: #f8d7da;
    color: #842029;
    border-left: 4px solid #dc3545;
}

.alert-warning {
    background-color: #fff3cd;
    color: #664d03;
    border-left: 4px solid #ffc107;
}

/* 로딩 스피너 */
.loading-spinner {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 200px;
}

.spinner-border {
    width: 3rem;
    height: 3rem;
    border-width: 0.3em;
}

/* 반응형 디자인 */
@media (max-width: 768px) {
    .main-container {
        padding: 1rem;
    }
    
    .search-form .row {
        gap: 1rem;
    }
    
    .grid-content {
        height: 300px;
    }
    
    .login-card {
        margin: 1rem;
    }
}

@media (max-width: 576px) {
    .card-header {
        padding: 0.75rem 1rem;
    }
    
    .btn {
        padding: 0.375rem 0.75rem;
        font-size: 0.875rem;
    }
    
    .form-control {
        font-size: 0.875rem;
    }
}

/* 유틸리티 클래스 */
.text-muted {
    color: #6c757d !important;
}

.text-center {
    text-align: center !important;
}

.mb-0 { margin-bottom: 0 !important; }
.mb-1 { margin-bottom: 0.25rem !important; }
.mb-2 { margin-bottom: 0.5rem !important; }
.mb-3 { margin-bottom: 1rem !important; }
.mb-4 { margin-bottom: 1.5rem !important; }
.mb-5 { margin-bottom: 3rem !important; }

.mt-0 { margin-top: 0 !important; }
.mt-1 { margin-top: 0.25rem !important; }
.mt-2 { margin-top: 0.5rem !important; }
.mt-3 { margin-top: 1rem !important; }
.mt-4 { margin-top: 1.5rem !important; }
.mt-5 { margin-top: 3rem !important; }