/* 메인 스타일시트 */

:root {
    --primary-color: #193830;
    --secondary-color: #193830;
    --success-color: #28a745;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --info-color: #17a2b8;
    --light-color: #f8f9fa;
    --dark-color: #343a40;
    --shadow: 0 4px 20px rgba(0,0,0,0.08);
    --shadow-hover: 0 8px 30px rgba(0,0,0,0.12);
    --border-radius: 12px;
    --transition: all 0.3s ease;
}

body {
    font-family: 'Pretendard', -apple-system, BlinkMacSystemFont, 'Apple SD Gothic Neo', 'Noto Sans KR', sans-serif;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    min-height: 100vh;
    color: var(--dark-color);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: geometricPrecision;
    font-synthesis-weight: none;
}

.navbar {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow);
    border-bottom: 1px solid rgba(0,0,0,0.05);
}

.navbar-brand {
    font-size: 1.5rem;
    font-weight: 700;
    color: #ffffff;
}

main {
    min-height: calc(100vh - 200px);
    padding: 40px 0;
}

.card {
    border: none;
    box-shadow: var(--shadow);
    border-radius: var(--border-radius);
    overflow: hidden;
    transition: var(--transition);
}

.card:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-2px);
}

.btn {
    border-radius: 8px;
    font-weight: 500;
    transition: var(--transition);
    border: none;
    position: relative;
    overflow: hidden;
}

.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: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--secondary-color) 0%, var(--primary-color) 100%);
    transform: translateY(-1px);
}

.btn-success {
    background: linear-gradient(135deg, #28a745 0%, #20c997 100%);
}

.btn-danger {
    background: linear-gradient(135deg, #dc3545 0%, #fd7e14 100%);
}

.form-control, .form-select {
    border-radius: 8px;
    border: 2px solid #e9ecef;
    transition: var(--transition);
    padding: 12px 16px;
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.alert {
    border-radius: var(--border-radius);
    border: none;
    box-shadow: var(--shadow);
}

.badge {
    border-radius: 20px;
    font-weight: 500;
}

.table {
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow);
}

.table thead th {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    border: none;
    font-weight: 600;
}

.pagination .page-link {
    border-radius: 8px;
    margin: 0 2px;
    border: 2px solid #e9ecef;
    color: var(--primary-color);
}

.pagination .page-item.active .page-link {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    border-color: var(--primary-color);
}

footer {
    background: var(--dark-color);
    color: white;
    padding: 40px 0;
    margin-top: 60px;
}

/* 반응형 디자인 */
@media (max-width: 768px) {
    body {
        font-size: 0.9rem;
    }

    .navbar-brand {
        font-size: 1.2rem;
    }

    main {
        padding: 20px 0;
    }

    .card {
        margin-bottom: 16px;
    }

    .btn {
        padding: 8px 16px;
        font-size: 0.9rem;
    }
}

/* 애니메이션 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

/* 로딩 스피너 */
.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid #f3f3f3;
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}
    border-top: 1px solid #ddd;
    margin-top: auto;
}

/* 학원 카드 */
.academy-card {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.academy-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.15);
}

/* 평점 */
.rating {
    font-size: 1.2rem;
    color: #ffc107;
}

/* 배지 */
.badge {
    padding: 0.5em 0.75em;
    border-radius: 4px;
}

/* 알림 */
.alert {
    border: none;
    border-radius: 6px;
}

/* 테이블 */
.table {
    margin-bottom: 0;
}

.table thead {
    background-color: #f8f9fa;
    border-bottom: 2px solid #dee2e6;
}