/* Responsive Styles */

/* Tablet */
@media (max-width: 768px) {
    .section1 {
        height: 500px;
    }
    
    .main-title {
        font-size: 2.5rem;
    }
    
    .sub-title {
        font-size: 1.2rem;
    }
    
    .bottom-services {
        padding: 0 10%;
    }
    
    .service-item:nth-child(1) {
        margin-left: 0;
    }
    
    .service-item:nth-child(3) {
        margin-right: 0;
    }
    
    .service-item span {
        font-size: 1rem;
        padding: 10px 20px;
    }
    
    .nav-menu {
        gap: 1rem;
    }
    
    /* Section 3 Cards */
    .cards-wrapper {
        grid-template-columns: 1fr 1fr;
        gap: 0;
    }
    
    .card-column-a {
        display: none; /* 태블릿에서는 sticky 카드 숨김 */
    }
    
    .card-item {
        height: 500px;
    }
    
    .card-content {
        padding: 30px;
    }
    
    .card-text h3 {
        font-size: 1.3rem;
    }
    
    /* Horizontal Banner - Tablet */
    .horizontal-banner-item {
        grid-column: 1 / 3; /* 태블릿에서 전체 너비 사용 */
        margin-top: 40px;
    }
    
    .banner-content {
        padding: 40px;
        height: auto;
        min-height: 350px;
    }
    
    .banner-symbol {
        font-size: 3rem;
    }
    
    .banner-text h2 {
        font-size: 1.8rem;
    }
    
    .banner-text p {
        font-size: 1rem;
    }
    
    .banner-right {
        flex: 0 0 380px;
        height: 280px;
    }
    
    .banner-left {
        padding-right: 40px;
    }
    
    /* Section 2 */
    .section2 {
        height: 350px;
        margin: 40px 0;
    }
    
    .dev-placeholder h2,
    .dev-placeholder-dark h2 {
        font-size: 1.8rem;
    }
    
    .dev-placeholder p,
    .dev-placeholder-dark p {
        font-size: 1.1rem;
    }
    
    /* Section 4 */
    .section4 {
        height: 700px;
        margin-top: 80px;
    }
    
    .section4-content {
        padding: 60px;
    }
    
    .section4-title {
        font-size: 3rem;
    }
    
    .section4-stats {
        gap: 40px;
    }
    
    .stat-item {
        padding: 30px 15px;
    }
    
    .stat-number {
        font-size: 2.5rem;
    }
    
    .stat-number span {
        font-size: 1.2rem;
    }
    
    /* Section 7 */
    .section7 {
        padding: 80px 0;
    }
    
    .section7-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .section7-main-card {
        min-height: 500px;
    }
    
    .section7-sub-grid {
        grid-template-columns: 1fr 1fr;
        gap: 15px;
    }
    
    .sub-card {
        min-height: 250px;
    }
    
    .sub-card .card-content {
        padding: 30px;
    }
    
    .main-title {
        font-size: 40px;
    }
    
    .card-b .card-title,
    .card-d .card-title {
        font-size: 28px;
    }
    
    .card-c .card-number {
        font-size: 40px;
    }
}

/* Mobile */
@media (max-width: 480px) {
    .header-inner {
        height: 60px;
    }
    
    .logo {
        font-size: 1.2rem;
    }
    
    .nav-menu {
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: white;
        box-shadow: 0 4px 6px rgba(0,0,0,0.1);
        padding: 1rem;
        display: none;
    }
    
    .nav-menu.active {
        display: flex;
    }
    
    .container {
        width: 90vw;
    }
    
    .section1-content {
        padding: 50px 0 20px 0;
    }
    
    .main-title {
        font-size: 1.8rem;
    }
    
    .sub-title {
        font-size: 1rem;
    }
    
    .bottom-services {
        flex-direction: column;
        gap: 1rem;
        padding: 0;
    }
    
    .service-item:nth-child(1),
    .service-item:nth-child(2),
    .service-item:nth-child(3) {
        margin: 0;
    }
    
    .service-item span {
        font-size: 0.9rem;
        padding: 8px 20px;
    }
    
    /* Section 3 Cards - Mobile */
    .section3 {
        padding: 80px 0 100px 0;
        overflow: hidden;
    }
    
    .cards-wrapper {
        display: block;
    }
    
    .card-column {
        margin-bottom: 40px;
    }
    
    .card-column-a {
        display: block;
        height: auto;
        margin-bottom: 60px;
    }
    
    .sticky-card {
        position: relative;
        top: auto;
        transform: none;
    }
    
    .card-item {
        height: 450px;
        margin-top: 0 !important;
        margin-bottom: 20px;
    }
    
    .card-content {
        padding: 25px;
    }
    
    .card-symbol {
        font-size: 2.5rem;
        margin-bottom: 20px;
    }
    
    .card-text h3 {
        font-size: 1.1rem;
        margin-bottom: 8px;
    }
    
    /* 스크롤바 숨기기 */
    .cards-wrapper::-webkit-scrollbar {
        display: none;
    }
    
    /* Horizontal Banner - Mobile */
    .horizontal-banner-item {
        grid-column: auto;
        margin-top: 20px;
        padding: 0;
        margin-bottom: 20px;
    }
    
    .banner-content {
        flex-direction: column;
        height: auto;
        padding: 40px 25px;
        text-align: center;
    }
    
    .banner-left {
        padding-right: 0;
        text-align: center;
        margin-bottom: 30px;
        max-width: 100%;
    }
    
    .banner-symbol {
        font-size: 2.5rem;
        margin-bottom: 20px;
    }
    
    .banner-text h2 {
        font-size: 1.6rem;
        margin-bottom: 15px;
    }
    
    .banner-text p {
        font-size: 0.95rem;
        margin-bottom: 25px;
        padding: 0 10px;
    }
    
    .banner-cta {
        padding: 12px 28px;
        font-size: 0.95rem;
    }
    
    .banner-right {
        width: 100%;
        flex: none;
        height: 220px;
        border-radius: 12px;
        margin: 0 auto;
        max-width: 350px;
    }
    
    /* Section 2 */
    .section2 {
        height: 300px;
        margin: 30px 0;
        border-radius: 15px;
    }
    
    .dev-placeholder h2,
    .dev-placeholder-dark h2 {
        font-size: 1.5rem;
    }
    
    .dev-placeholder p,
    .dev-placeholder-dark p {
        font-size: 1rem;
        padding: 0 20px;
    }
    
    .dev-info {
        padding: 15px 25px;
    }
    
    .dev-info p {
        font-size: 0.8rem;
    }
    
    /* Section 4 */
    .section4 {
        height: 600px;
        margin-top: 60px;
        border-radius: 15px;
    }
    
    .section4-content {
        padding: 40px 20px;
    }
    
    .section4-title {
        font-size: 2rem;
        text-align: center;
    }
    
    .section4-subtitle {
        font-size: 0.9rem;
        text-align: center;
    }
    
    .section4-stats {
        grid-template-columns: 1fr;
        gap: 20px;
        margin-top: 60px;
    }
    
    .stat-item {
        padding: 25px 15px;
    }
    
    .stat-label {
        font-size: 0.8rem;
    }
    
    .stat-number {
        font-size: 2rem;
    }
    
    .stat-number span {
        font-size: 1rem;
    }
    
    .stat-number .divider {
        display: block;
        margin: 10px 0;
    }
    
    /* Section 5, 6 */
    .section5,
    .section6 {
        min-height: 400px;
        padding: 60px 0;
    }
    
    /* Section 7 */
    .section7 {
        padding: 60px 0;
    }
    
    .section7-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .section7-main-card {
        min-height: 400px;
    }
    
    .section7-main-card .card-content {
        padding: 40px 25px;
    }
    
    .main-subtitle {
        font-size: 16px;
    }
    
    .main-title {
        font-size: 32px;
    }
    
    .section7-sub-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .sub-card {
        min-height: 300px;
    }
    
    .sub-card .card-content {
        padding: 30px 25px;
    }
    
    .card-a .card-title {
        font-size: 24px;
        margin-bottom: 20px;
    }
    
    .card-a .card-text p {
        font-size: 14px;
    }
    
    .card-a .card-footer {
        font-size: 14px;
    }
    
    .card-b .card-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .card-b .card-title {
        font-size: 28px;
    }
    
    .card-b-image {
        display: none; /* 모바일에서는 이미지 숨김 */
    }
    
    .card-c .card-subtitle {
        font-size: 16px;
    }
    
    .card-c .card-number {
        font-size: 36px;
    }
    
    .card-c-image {
        opacity: 0.3; /* 모바일에서는 투명도 조절 */
    }
    
    .card-d .card-title {
        font-size: 24px;
    }
}