/* DANE 공통 스타일 */

/* 기본 리셋 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f8f9fa;
}

/* 컨테이너 */
.wrap {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 헤더 */
#header {
    background: white;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    transition: all 0.3s ease;
}

#header .wrap {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 20px;
}

#header h1 {
    flex-shrink: 0;
}

#header h1 a {
    display: block;
}

#header h1 img {
    height: 50px;
    width: auto;
}

/* 네비게이션 */
.gnb {
    margin-left: auto;
}

.gnb ul {
    display: flex;
    list-style: none;
    gap: 2rem;
    margin: 0;
    padding: 0;
}

.gnb li {
    position: relative;
}

.gnb a {
    color: #333;
    text-decoration: none;
    font-weight: 500;
    font-size: 1rem;
    padding: 0.5rem 0;
    transition: color 0.3s ease;
    position: relative;
}

.gnb a:hover {
    color: #667eea;
}

.gnb a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    transition: width 0.3s ease;
}

.gnb a:hover::after {
    width: 100%;
}

/* 메인 콘텐츠 */
#main {
    margin-top: 80px;
    min-height: calc(100vh - 80px);
}

/* 푸터 */
#footer {
    background: #2c3e50;
    color: white;
    padding: 3rem 0 2rem;
    margin-top: 4rem;
}

#footer .wrap {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
}

.footer_logo img {
    height: 60px;
    width: auto;
    opacity: 0.8;
}

.footer_info {
    text-align: right;
    font-size: 0.9rem;
    line-height: 1.8;
}

.footer_info p {
    margin: 0;
    opacity: 0.8;
}

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

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

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

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

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

.p-1 { padding: 0.5rem; }
.p-2 { padding: 1rem; }
.p-3 { padding: 1.5rem; }
.p-4 { padding: 2rem; }
.p-5 { padding: 3rem; }

/* 반응형 디자인 */
@media (max-width: 768px) {
    .wrap {
        padding: 0 15px;
    }
    
    #header .wrap {
        padding: 0.8rem 15px;
    }
    
    #header h1 img {
        height: 40px;
    }
    
    .gnb ul {
        gap: 1rem;
    }
    
    .gnb a {
        font-size: 0.9rem;
    }
    
    #main {
        margin-top: 70px;
    }
    
    #footer .wrap {
        flex-direction: column;
        text-align: center;
        gap: 1rem;
    }
    
    .footer_info {
        text-align: center;
    }
}

@media (max-width: 480px) {
    .gnb ul {
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: white;
        box-shadow: 0 2px 10px rgba(0,0,0,0.1);
        display: none;
        padding: 1rem;
        gap: 0.5rem;
    }
    
    .gnb ul.active {
        display: flex;
    }
    
    .gnb a {
        padding: 0.8rem 0;
        border-bottom: 1px solid #f1f3f4;
    }
    
    .gnb a:last-child {
        border-bottom: none;
    }
    
    /* 햄버거 메뉴 버튼 (JavaScript로 추가) */
    .mobile-menu-btn {
        display: block;
        background: none;
        border: none;
        font-size: 1.5rem;
        color: #333;
        cursor: pointer;
        padding: 0.5rem;
    }
}

/* 로딩 스피너 */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid #f3f3f3;
    border-top: 3px solid #667eea;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* 카드 스타일 */
.card {
    background: white;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0,0,0,0.15);
}

.card-header {
    padding: 1.5rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.card-body {
    padding: 1.5rem;
}

.card-footer {
    padding: 1rem 1.5rem;
    background: #f8f9fa;
    border-top: 1px solid #f1f3f4;
}

/* 알림 메시지 */
.alert {
    padding: 1rem 1.5rem;
    border-radius: 10px;
    margin-bottom: 1rem;
    border: 1px solid transparent;
}

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

.alert-error {
    background: #f8d7da;
    color: #721c24;
    border-color: #f5c6cb;
}

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

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

/* 스크롤바 커스터마이징 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: #c1c1c1;
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: #a8a8a8;
}

/* 선택 영역 스타일 */
::selection {
    background: #667eea;
    color: white;
}

::-moz-selection {
    background: #667eea;
    color: white;
}

/* 포커스 스타일 */
a:focus, button:focus, input:focus, textarea:focus, select:focus {
    outline: 2px solid #667eea;
    outline-offset: 2px;
}

/* 접근성 */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* 애니메이션 */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

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

@keyframes slideIn {
    from { transform: translateX(-100%); }
    to { transform: translateX(0); }
}

.slide-in {
    animation: slideIn 0.5s ease-out;
}

/* 그라데이션 배경 */
.gradient-bg {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.gradient-bg-2 {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

.gradient-bg-3 {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}

/* 텍스트 그라데이션 */
.gradient-text {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* 버튼 기본 스타일 */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.8rem 1.5rem;
    border-radius: 25px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 0.9rem;
    text-align: center;
    justify-content: center;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
}

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

.btn-secondary:hover {
    background: #5a6268;
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(108, 117, 125, 0.4);
}

.btn-success {
    background: #28a745;
    color: white;
}

.btn-success:hover {
    background: #218838;
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(40, 167, 69, 0.4);
}

.btn-outline {
    background: transparent;
    border: 2px solid #667eea;
    color: #667eea;
}

.btn-outline:hover {
    background: #667eea;
    color: white;
}