/* 한국농수산대학교 총동문회 사이트 전용 CSS */

/* CSS 변수 정의 */
:root {
    --primary-green: #28a745;
    --primary-blue: #007bff;
    --primary-purple: #6f42c1;
    --text-dark: #212529;
    --text-gray: #6c757d;
    --bg-light: #f8f9fa;
    --border-gray: #dee2e6;
    --shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
    --shadow-lg: 0 1rem 3rem rgba(0, 0, 0, 0.175);
}

/* 기본 스타일 */
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: #fff;
}

/* 헤더 스타일 */
.header {
    background: linear-gradient(135deg, var(--primary-green) 0%, var(--primary-blue) 100%);
    color: white;
    padding: 1rem 0;
    box-shadow: var(--shadow);
}

.logo {
    display: flex;
    align-items: center;
    text-decoration: none;
    color: white;
}

    .logo img {
        height: 50px;
        margin-right: 1rem;
    }

.logo-text h1 {
    font-size: 1.5rem;
    margin: 0;
    font-weight: bold;
}

.logo-text p {
    font-size: 0.9rem;
    margin: 0;
    opacity: 0.9;
}

/* 네비게이션 스타일 */
.nav-menu {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: 2rem;
}

    .nav-menu a {
        color: white;
        text-decoration: none;
        font-weight: 500;
        transition: opacity 0.3s ease;
    }

        .nav-menu a:hover {
            opacity: 0.8;
            color: white;
        }

/* 버튼 스타일 */
.btn {
    display: inline-block;
    padding: 0.5rem 1rem;
    border: none;
    border-radius: 0.375rem;
    text-decoration: none;
    font-weight: 500;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-green) 0%, var(--primary-blue) 100%);
    color: white;
}

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

.btn-outline {
    background: transparent;
    color: white;
    border: 2px solid white;
}

    .btn-outline:hover {
        background: white;
        color: var(--primary-green);
    }

/* 카드 스타일 */
.card {
    background: white;
    border-radius: 0.5rem;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-gray);
    overflow: hidden;
}

.card-header {
    background: var(--bg-light);
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-gray);
}

.card-body {
    padding: 1.5rem;
}

/* 폼 스타일 */
.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

.form-control {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid var(--border-gray);
    border-radius: 0.375rem;
    font-size: 1rem;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

    .form-control:focus {
        outline: none;
        border-color: var(--primary-green);
        box-shadow: 0 0 0 3px rgba(40, 167, 69, 0.1);
    }

    .form-control.error {
        border-color: #dc3545;
        box-shadow: 0 0 0 3px rgba(220, 53, 69, 0.1);
    }

/* 유효성 검사 메시지 */
.invalid-feedback {
    display: block;
    color: #dc3545;
    font-size: 0.875rem;
    margin-top: 0.25rem;
}

.valid-feedback {
    display: block;
    color: var(--primary-green);
    font-size: 0.875rem;
    margin-top: 0.25rem;
}

/* 알림 메시지 */
.alert {
    padding: 1rem;
    border-radius: 0.375rem;
    margin-bottom: 1rem;
}

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

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

.alert-warning {
    background-color: #fff3cd;
    border: 1px solid #ffeaa7;
    color: #856404;
}

.alert-info {
    background-color: #d1ecf1;
    border: 1px solid #bee5eb;
    color: #0c5460;
}

/* 테이블 스타일 */
.table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 1rem;
}

    .table th,
    .table td {
        padding: 0.75rem;
        text-align: left;
        border-bottom: 1px solid var(--border-gray);
    }

    .table th {
        background-color: var(--bg-light);
        font-weight: 600;
        color: var(--text-dark);
    }

    .table tbody tr:hover {
        background-color: var(--bg-light);
    }

/* 배지 스타일 */
.badge {
    display: inline-block;
    padding: 0.25rem 0.5rem;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 0.25rem;
    text-transform: uppercase;
}

.badge-success {
    background-color: var(--primary-green);
    color: white;
}

.badge-warning {
    background-color: #ffc107;
    color: #212529;
}

.badge-danger {
    background-color: #dc3545;
    color: white;
}

.badge-info {
    background-color: #17a2b8;
    color: white;
}

/* 페이지네이션 */
.pagination {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: 0.25rem;
}

    .pagination li {
        margin: 0;
    }

    .pagination a {
        display: block;
        padding: 0.5rem 0.75rem;
        color: var(--primary-green);
        text-decoration: none;
        border: 1px solid var(--border-gray);
        border-radius: 0.25rem;
        transition: all 0.3s ease;
    }

        .pagination a:hover {
            background-color: var(--primary-green);
            color: white;
            border-color: var(--primary-green);
        }

    .pagination .active a {
        background-color: var(--primary-green);
        color: white;
        border-color: var(--primary-green);
    }

/* 반응형 디자인 */
@media (max-width: 768px) {
    .nav-menu {
        flex-direction: column;
        gap: 1rem;
    }

    .header-actions {
        margin-top: 1rem;
    }

    .btn {
        width: 100%;
        margin-bottom: 0.5rem;
    }

    .table {
        font-size: 0.875rem;
    }

    .card-body {
        padding: 1rem;
    }
}

/* 유틸리티 클래스 */
.text-center {
    text-align: center;
}

.text-left {
    text-align: left;
}

.text-right {
    text-align: right;
}

.mb-0 {
    margin-bottom: 0;
}

.mb-1 {
    margin-bottom: 0.25rem;
}

.mb-2 {
    margin-bottom: 0.5rem;
}

.mb-3 {
    margin-bottom: 1rem;
}

.mb-4 {
    margin-bottom: 1.5rem;
}

.mb-5 {
    margin-bottom: 3rem;
}

.mt-0 {
    margin-top: 0;
}

.mt-1 {
    margin-top: 0.25rem;
}

.mt-2 {
    margin-top: 0.5rem;
}

.mt-3 {
    margin-top: 1rem;
}

.mt-4 {
    margin-top: 1.5rem;
}

.mt-5 {
    margin-top: 3rem;
}

.p-0 {
    padding: 0;
}

.p-1 {
    padding: 0.25rem;
}

.p-2 {
    padding: 0.5rem;
}

.p-3 {
    padding: 1rem;
}

.p-4 {
    padding: 1.5rem;
}

.p-5 {
    padding: 3rem;
}

/* 애니메이션 */
.fade-in {
    animation: fadeIn 0.5s ease-in;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.slide-in {
    animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
    from {
        transform: translateX(-100%);
    }

    to {
        transform: translateX(0);
    }
}