/**
 * Hero Slide Enhancements
 * 포스텍 전기전자공학과 Hero 슬라이드 개선 스타일
 */

/* 슬라이드 링크 스타일 */
.main_slide_cont .slide-link {
    display: block;
    width: 100%;
    height: 100%;
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
    cursor: pointer;
    position: relative;
    z-index: 10;
}

.main_slide_cont .slide-link:hover {
    text-decoration: none;
    color: inherit;
}

.main_slide_cont .slide-link:hover .bgbx {
    transform: scale(1.05);
    transition: transform 8s ease;
}

.main_slide_cont .bgbx {
    transition: transform 0.3s ease;
}

/* CTA 버튼 스타일 */
.slide-cta {
    margin-top: 20px;
    opacity: 0;
    transform: translateY(20px);
    animation: slideUpFadeIn 0.8s ease 1.5s forwards;
}

.read-more-btn {
    display: inline-block;
    padding: 12px 24px;
    background: linear-gradient(135deg, #007cba 0%, #005a8c 100%);
    color: white;
    border-radius: 25px;
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 0.5px;
    transition: all 0.3s ease;
    border: 2px solid rgba(255, 255, 255, 0.3);
    box-shadow: 0 4px 15px rgba(0, 124, 186, 0.3);
    position: relative;
    overflow: hidden;
}

.read-more-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 ease;
}

.slide-link:hover .read-more-btn {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 124, 186, 0.4);
    background: linear-gradient(135deg, #0088cc 0%, #006699 100%);
}

.slide-link:hover .read-more-btn::before {
    left: 100%;
}

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

/* 슬라이드 텍스트 애니메이션 */
.main_slide_cont .slatbx .inlinebx h2 .txt {
    animation: fadeInUp 1s ease 0.5s both;
}

.main_slide_cont .slatbx .inlinebx h2 .b_txt {
    animation: fadeInUp 1s ease 0.8s both;
}

.main_slide_cont .slatbx .inlinebx .sub_txt {
    animation: fadeInUp 1s ease 1.2s both;
}

.main_slide_cont .slatbx .inlinebx .line_bar {
    animation: expandLine 1s ease 1s both;
}

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

@keyframes expandLine {
    from {
        transform: scaleX(0);
        opacity: 0;
    }
    to {
        transform: scaleX(1);
        opacity: 1;
    }
}

/* 슬라이드 활성화 시 애니메이션 리셋 */
.main_slide_cont .slides li:not([style*="display: none"]) .txt,
.main_slide_cont .slides li:not([style*="display: none"]) .b_txt,
.main_slide_cont .slides li:not([style*="display: none"]) .sub_txt,
.main_slide_cont .slides li:not([style*="display: none"]) .line_bar,
.main_slide_cont .slides li:not([style*="display: none"]) .slide-cta {
    animation-play-state: running;
}

/* 호버 효과 개선 */
.main_slide_cont .slide-link:hover .slatbx {
    background: rgba(0, 0, 0, 0.3);
    transition: background 0.3s ease;
}

/* 반응형 디자인 */
@media (max-width: 768px) {
    .read-more-btn {
        padding: 10px 20px;
        font-size: 12px;
    }
    
    .slide-cta {
        margin-top: 15px;
    }
    
    .main_slide_cont .slatbx .inlinebx h2 .txt,
    .main_slide_cont .slatbx .inlinebx h2 .b_txt {
        font-size: 1.2em;
    }
    
    .main_slide_cont .slatbx .inlinebx .sub_txt {
        font-size: 0.9em;
        line-height: 1.4;
    }
}

@media (max-width: 480px) {
    .read-more-btn {
        padding: 8px 16px;
        font-size: 11px;
    }
    
    .slide-cta {
        margin-top: 10px;
    }
}

/* 슬라이드 로딩 상태 */
.main_slide_cont .slides li img {
    transition: opacity 0.5s ease;
}

.main_slide_cont .slides li.loading .bgbx::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 40px;
    height: 40px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top: 3px solid white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    transform: translate(-50%, -50%);
}

@keyframes spin {
    0% { transform: translate(-50%, -50%) rotate(0deg); }
    100% { transform: translate(-50%, -50%) rotate(360deg); }
}

/* 클릭 가능한 영역 개선 */
.main_slide_cont .slatbx,
.main_slide_cont .bgbx {
    cursor: pointer;
}

.main_slide_cont .slide-link:hover .slatbx {
    background: rgba(0, 0, 0, 0.1);
    transition: background 0.3s ease;
}

/* 텍스트 영역 클릭 표시 */
.main_slide_cont .inlinebx {
    cursor: pointer;
    transition: all 0.3s ease;
}

.main_slide_cont .slide-link:hover .inlinebx {
    transform: translateY(-2px);
}

/* 접근성 개선 */
.slide-link:focus {
    outline: 3px solid #007cba;
    outline-offset: 2px;
}

.slide-link:focus .read-more-btn {
    background: linear-gradient(135deg, #0088cc 0%, #006699 100%);
}

/* 클릭 피드백 */
.main_slide_cont .slide-link:active {
    transform: scale(0.98);
    transition: transform 0.1s ease;
}

/* 터치 디바이스 지원 */
@media (hover: none) and (pointer: coarse) {
    .main_slide_cont .slide-link:hover .bgbx {
        transform: none;
    }
    
    .main_slide_cont .slide-link:active .bgbx {
        transform: scale(1.02);
        transition: transform 0.2s ease;
    }
}

/* 프린트 스타일 */
@media print {
    .main_slide_cont .slide-link {
        display: block;
        page-break-inside: avoid;
    }
    
    .slide-cta {
        display: none;
    }
    
    .main_slide_cont .bgbx {
        filter: grayscale(100%);
    }
}