/* BYD SEAL 프로모션 스타일 */

/* 기본 리셋 및 설정 */
.byd-seal-content * {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

.byd-seal-content {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    background: #0a0a0a;
    color: #ffffff;
    overflow-x: hidden;
}

.byd-seal-content .container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Hero Section (video background 버전) */
.byd-seal-content .hero {
    height: 100vh;
    position: relative;            /* 비디오 포지셔닝 기준 */
    display: flex;
    align-items: center;
    justify-content: center;
    filter: contrast(1.1) brightness(1.05);
    overflow: hidden;              /* 비디오가 영역을 넘지 않도록 */
}
/* 비디오를 전체 화면에 꽉 채움 */
.byd-seal-content .hero-video {
    position: absolute;
    inset: 0;             /* top/right/bottom/left: 0 */
    width: 100%;
    height: 100%;
    object-fit: cover;    /* 종횡비 유지하며 꽉 채우기 */
    z-index: 0;
}

.byd-seal-content .hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    /* 텍스트 가독성을 위한 추가 오버레이 */
    background: 
        linear-gradient(135deg, rgba(0, 0, 0, 0.2), rgba(212, 175, 55, 0.05)),
        linear-gradient(180deg, rgba(0, 0, 0, 0.3) 0%, transparent 30%, transparent 70%, rgba(0, 0, 0, 0.5) 100%);
    backdrop-filter: blur(1px);
}

.byd-seal-content .hero-content {
    text-align: center;
    z-index: 1;
	position: relative;
    max-width: 800px;
    animation: fadeInUp 1s ease;
}

.byd-seal-content .hero-title {
    font-size: clamp(3rem, 8vw, 6rem);
    font-weight: 700;
    margin-bottom: 20px;
    color: #ffffff;
    letter-spacing: 3px;
    /* 텍스트 테두리 효과 */
    -webkit-text-stroke: 3px #000000;
    text-shadow: 
        3px 3px 0px #000000,
        -3px -3px 0px #000000,
        3px -3px 0px #000000,
        -3px 3px 0px #000000,
        2px 2px 8px rgba(0, 0, 0, 0.8);
}

.byd-seal-content .hero-subtitle {
    font-size: clamp(1.2rem, 3vw, 2rem);
    margin-bottom: 30px;
    color: #ffffff;
    font-weight: 500;
    /* 부제목도 테두리 효과 */
    -webkit-text-stroke: 2px #000000;
    text-shadow: 
        2px 2px 0px #000000,
        -2px -2px 0px #000000,
        2px -2px 0px #000000,
        -2px 2px 0px #000000,
        1px 1px 6px rgba(0, 0, 0, 0.8);
}

/* 모바일에서 배경 고정 제거 (성능 이슈) */
@media (max-width: 768px) {
    .byd-seal-content .hero {
        background-attachment: scroll;
    }
    
    .byd-seal-content .hero-content {
        padding: 40px 20px;
        margin: 0 15px;
    }
}

.byd-seal-content .image-placeholder {
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    transition: all 0.3s ease;
    cursor: pointer;
}

.byd-seal-content .image-placeholder:hover {
    filter: brightness(1.1);
}

.byd-seal-content .hero-content {
    text-align: center;
    z-index: 1;
    max-width: 800px;
    animation: fadeInUp 1s ease;
}

.byd-seal-content .hero-title {
    font-size: clamp(3rem, 8vw, 6rem);
    font-weight: 700;
    margin-bottom: 20px;
    color: #ffffff;
    letter-spacing: 3px;
    font-family: Arial, "Helvetica Neue", Helvetica, sans-serif;
    /* 멋진 골드 그라데이션 테두리 */
    -webkit-text-stroke: 2px transparent;
    background: linear-gradient(135deg, #ffffff, #ffffff);
    -webkit-background-clip: text;
    text-shadow: 
        0 0 20px rgba(212, 175, 55, 0.8),
        2px 2px 4px rgba(0, 0, 0, 0.9),
        -2px -2px 4px rgba(0, 0, 0, 0.9),
        2px -2px 4px rgba(0, 0, 0, 0.9),
        -2px 2px 4px rgba(0, 0, 0, 0.9);
    /* 골드 글로우 효과 */
    filter: drop-shadow(0 0 15px rgba(212, 175, 55, 0.6));
}

.byd-seal-content .hero-subtitle {
    font-size: clamp(1.2rem, 3vw, 2rem);
    margin-bottom: 30px;
    color: #ffffff;
    font-weight: 400;
    font-family: Arial, "Helvetica Neue", Helvetica, sans-serif;
    /* 아주 얇은 윤곽선만 */
    -webkit-text-stroke: 0.5px rgba(0, 0, 0, 0.7);
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
}

.byd-seal-content .hero-cta {
    display: inline-block;
    padding: 18px 40px;
    background: linear-gradient(135deg, #d4af37, #ffd700);
    color: #000;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    box-shadow: 0 10px 30px rgba(212, 175, 55, 0.3);
}

.byd-seal-content .hero-cta:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(212, 175, 55, 0.4);
}

/* Key Message Section */
.byd-seal-content .key-message {
    padding: 100px 0;
    background: linear-gradient(135deg, #1a1a1a, #2a2a2a);
    text-align: center;
}

.byd-seal-content .key-message-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    margin-bottom: 30px;
    background: linear-gradient(135deg, #d4af37, #ffd700);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    font-weight: 700;
}

.byd-seal-content .key-message-text {
    font-size: 1.3rem;
    color: #cccccc;
    max-width: 600px;
    margin: 0 auto 40px;
    line-height: 1.8;
}

.byd-seal-content .highlight {
    color: #d4af37;
    font-weight: 600;
}

/* Gallery Section */
.byd-seal-content .gallery {
    padding: 100px 0;
    background: #0a0a0a;
}

.byd-seal-content .section-title {
    text-align: center;
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: 80px;
    background: linear-gradient(135deg, #ffffff, #d4af37);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    font-weight: 700;
}

.byd-seal-content .gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    margin-bottom: 60px;
}

.byd-seal-content .gallery-item {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    aspect-ratio: 16/10;
    background: #1a1a1a;
    transition: all 0.3s ease;
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
}

.byd-seal-content .gallery-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(212, 175, 55, 0.2);
}

.byd-seal-content .gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.byd-seal-content .gallery-item:hover img {
    transform: scale(1.05);
}

.byd-seal-content .gallery-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 30px;
    background: linear-gradient(transparent, rgba(0,0,0,0.8));
    color: white;
}

.byd-seal-content .gallery-title {
    font-size: 1.4rem;
    font-weight: 600;
    margin-bottom: 10px;
    color: #d4af37;
}

.byd-seal-content .gallery-desc {
    font-size: 1rem;
    color: #cccccc;
}

/* Features Section */
.byd-seal-content .features {
    padding: 100px 0;
    background: linear-gradient(135deg, #1a1a1a, #2a2a2a);
}

.byd-seal-content .features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    max-width: 1200px;
    margin: 0 auto;
}

/* 태블릿에서 2열 */
@media (max-width: 1024px) {
    .byd-seal-content .features-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 30px;
    }
}

/* 모바일에서 1열 */
@media (max-width: 768px) {
    .byd-seal-content .features-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
}

.byd-seal-content .feature-card {
    background: rgba(255, 255, 255, 0.05);
    padding: 40px;
    border-radius: 20px;
    text-align: center;
    transition: all 0.3s ease;
    border: 1px solid rgba(212, 175, 55, 0.2);
    backdrop-filter: blur(10px);
}

.byd-seal-content .feature-card:hover {
    transform: translateY(-10px);
    border-color: rgba(212, 175, 55, 0.5);
    box-shadow: 0 20px 40px rgba(212, 175, 55, 0.1);
}

.byd-seal-content .feature-icon {
    font-size: 3rem;
    color: #d4af37;
    margin-bottom: 20px;
    display: block;
}

.byd-seal-content .feature-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 15px;
    color: #ffffff;
}

.byd-seal-content .feature-desc {
    color: #cccccc;
    line-height: 1.6;
}

/* Purchase Section */
.byd-seal-content .purchase {
    padding: 100px 0;
    background: linear-gradient(135deg, #0a0a0a, #1a1a1a);
    text-align: center;
}

.byd-seal-content .purchase-card {
    background: linear-gradient(135deg, rgba(212, 175, 55, 0.1), rgba(255, 215, 0, 0.05));
    border: 2px solid rgba(212, 175, 55, 0.3);
    border-radius: 30px;
    padding: 60px 40px;
    max-width: 800px;
    margin: 0 auto;
    backdrop-filter: blur(10px);
}

.byd-seal-content .purchase-title {
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: 20px;
    color: #d4af37;
    font-weight: 700;
}

.byd-seal-content .purchase-subtitle {
    font-size: 1.3rem;
    margin-bottom: 40px;
    color: #ffffff;
}

.byd-seal-content .purchase-benefits {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    margin-bottom: 50px;
}

.byd-seal-content .benefit-item {
    color: #cccccc;
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.byd-seal-content .benefit-item::before {
    content: '✓';
    color: #d4af37;
    font-weight: bold;
    font-size: 1.3rem;
}

.byd-seal-content .purchase-cta {
    display: inline-block;
    padding: 20px 50px;
    background: linear-gradient(135deg, #d4af37, #ffd700);
    color: #000;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 700;
    font-size: 1.2rem;
    transition: all 0.3s ease;
    box-shadow: 0 10px 30px rgba(212, 175, 55, 0.3);
}

.byd-seal-content .purchase-cta:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 15px 40px rgba(212, 175, 55, 0.4);
}

/* BYD Footer */
.byd-seal-content .byd-footer {
    background: #000000;
    padding: 60px 0 30px;
    text-align: center;
    border-top: 1px solid rgba(212, 175, 55, 0.2);
}

.byd-seal-content .byd-footer-content {
    margin-bottom: 30px;
}

.byd-seal-content .byd-footer-logo {
    font-size: 2rem;
    font-weight: 700;
    background: linear-gradient(135deg, #d4af37, #ffd700);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 20px;
}

.byd-seal-content .byd-footer-text {
    color: #888888;
    max-width: 600px;
    margin: 0 auto;
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes float {
    0%, 100% { transform: translateY(0px) scale(1); }
    50% { transform: translateY(-20px) scale(1.1); }
}

.byd-seal-content .fade-in {
    opacity: 0;
    transform: translateY(50px);
    transition: all 0.6s ease;
}

.byd-seal-content .fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Image Modal */
.byd-seal-content .image-modal {
    display: none;
    position: fixed;
    z-index: 9999;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(5px);
}

.byd-seal-content .modal-content {
    position: relative;
    margin: auto;
    padding: 20px;
    width: 90%;
    max-width: 1200px;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.byd-seal-content .modal-image {
    max-width: 100%;
    max-height: 80%;
    object-fit: contain;
    border-radius: 10px;
    box-shadow: 0 20px 60px rgba(212, 175, 55, 0.3);
}

.byd-seal-content .modal-info {
    text-align: center;
    margin-top: 20px;
    color: white;
}

.byd-seal-content .modal-title {
    font-size: 1.8rem;
    color: #d4af37;
    margin-bottom: 10px;
    font-weight: 600;
}

.byd-seal-content .modal-desc {
    font-size: 1.2rem;
    color: #cccccc;
    line-height: 1.6;
}

.byd-seal-content .close-modal {
    position: absolute;
    top: 30px;
    right: 50px;
    color: #ffffff;
    font-size: 40px;
    font-weight: bold;
    cursor: pointer;
    transition: color 0.3s ease;
    z-index: 10000;
}

.byd-seal-content .close-modal:hover {
    color: #d4af37;
}

/* Responsive */
@media (max-width: 768px) {
    .byd-seal-content .container {
        padding: 0 15px;
    }
    
    .byd-seal-content .gallery-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .byd-seal-content .purchase-benefits {
        grid-template-columns: 1fr;
    }

    .byd-seal-content .close-modal {
        top: 20px;
        right: 20px;
        font-size: 30px;
    }

    .byd-seal-content .modal-title {
        font-size: 1.4rem;
    }

    .byd-seal-content .modal-desc {
        font-size: 1rem;
    }
}