/*
=====================================
BYD SEALION 7 Landing Page Styles
최종 완성본 - 수정본
=====================================
*/

/* 기본 리셋 및 변수 */
:root {
    --primary-color: #000000;
    --secondary-color: #ffffff;
    --accent-color: #0066cc;
    --text-dark: #333333;
    --text-light: #666666;
    --text-white: #ffffff;
    --bg-light: #f8f9fa;
    --gradient-primary: linear-gradient(135deg, #000000 0%, #333333 100%);
    --gradient-secondary: linear-gradient(135deg, #0066cc 0%, #004499 100%);
    --shadow-light: 0 4px 20px rgba(0, 0, 0, 0.1);
    --shadow-heavy: 0 20px 60px rgba(0, 0, 0, 0.3);
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-spring: all 0.6s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

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

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
}

body {
    font-family: var(--font-primary);
    line-height: 1.6;
    color: var(--text-dark);
    overflow-x: hidden;
    background-color: var(--secondary-color);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 로딩 스크린 */
.loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.loading-screen.hidden {
    opacity: 0;
    visibility: hidden;
}

.loading-content {
    text-align: center;
    color: var(--text-white);
}

.loading-logo {
    font-size: 3rem;
    font-weight: 800;
    letter-spacing: 0.2em;
    margin-bottom: 1rem;
}

.loading-text {
    font-size: 1.2rem;
    font-weight: 300;
    letter-spacing: 0.1em;
    margin-bottom: 2rem;
}

.loading-progress {
    width: 200px;
    height: 2px;
    background: rgba(255, 255, 255, 0.2);
    margin: 0 auto;
    overflow: hidden;
    border-radius: 1px;
}

.loading-progress::after {
    content: '';
    display: block;
    width: 100%;
    height: 100%;
    background: var(--text-white);
    transform: translateX(-100%);
    animation: loadingProgress 2s ease-in-out;
}

@keyframes loadingProgress {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(0); }
}

/* 메인 컨테이너 */
.main-container {
    position: relative;
}

/* 히어로 섹션 - 높이 최적화 (헤더 높이 고려) */
.hero-section {
    position: relative;
    height: calc(100vh - 80px);
    max-height: calc(100vh - 80px);
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -2;
}

.hero-video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    position: absolute;
    top: 0;
    left: 0;
    background: #000;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(0, 0, 0, 0.6) 0%, rgba(0, 0, 0, 0.3) 100%);
    z-index: -1;
}

.hero-content {
    position: relative;
    text-align: center;
    color: var(--text-white);
    z-index: 1;
    max-width: 800px;
    padding: 0 20px;
}

.hero-title {
    font-size: clamp(3rem, 8vw, 6rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
}

.title-line {
    display: block;
    opacity: 0;
    transform: translateY(50px);
    animation: titleReveal 1s ease-out forwards;
}

.title-line:nth-child(2) {
    animation-delay: 0.3s;
}

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

.hero-subtitle {
    font-size: 1.5rem;
    font-weight: 300;
    margin-bottom: 2rem;
    opacity: 0;
    animation: fadeInUp 1s ease-out 0.8s forwards;
}

/* 상담신청 버튼 - 새로 추가 */
.hero-cta-btn {
    display: inline-block;
    padding: 1rem 3rem;
    font-size: 1.1rem;
    font-weight: 600;
    background: var(--accent-color);
    color: var(--text-white);
    border: none;
    border-radius: 50px;
    cursor: pointer;
    transition: var(--transition-smooth);
    text-decoration: none;
    margin-top: 2rem;
    margin-bottom: 1rem;
    opacity: 1;
    box-shadow: 0 4px 15px rgba(0, 102, 204, 0.3);
}

.hero-cta-btn:hover {
    background: #0052a3;
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 102, 204, 0.5);
}

.hero-specs {
    display: flex;
    justify-content: center;
    gap: 4rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.spec-item {
    text-align: center;
    opacity: 0;
    transform: translateY(30px);
    animation: specReveal 0.8s ease-out forwards;
}

.spec-item:nth-child(1) { animation-delay: 1.2s; }
.spec-item:nth-child(2) { animation-delay: 1.4s; }
.spec-item:nth-child(3) { animation-delay: 1.6s; }

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

.spec-value {
    font-size: 3rem;
    font-weight: 700;
    color: var(--accent-color);
    line-height: 1;
    margin-bottom: 0.5rem;
}

.spec-label {
    font-size: 1rem;
    font-weight: 400;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.hero-disclaimer {
    margin-top: 2rem;
    opacity: 0;
    animation: fadeInUp 1s ease-out 1.8s forwards;
}

.hero-disclaimer p {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.8);
    max-width: 600px;
    margin: 0 auto;
}

/* 스크롤 인디케이터 */
.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    color: var(--text-white);
    opacity: 0;
    animation: fadeInUp 1s ease-out 2s forwards;
}

.scroll-arrow {
    width: 20px;
    height: 20px;
    border: 2px solid var(--text-white);
    border-top: none;
    border-left: none;
    transform: rotate(45deg);
    margin-bottom: 10px;
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: rotate(45deg) translateY(0); }
    40% { transform: rotate(45deg) translateY(-10px); }
    60% { transform: rotate(45deg) translateY(-5px); }
}

.scroll-indicator span {
    font-size: 0.9rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

/* 기술 섹션 - PC 레이아웃 */
.technology-section {
    padding: 8rem 0;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    position: relative;
}

.technology-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.7);
    z-index: 0;
}

.tech-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
    position: relative;
    z-index: 1;
}

.tech-text {
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding-right: 2rem;
}

.tech-text h2 {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 2.5rem;
    color: #1a1a1a;
    text-shadow: 1px 1px 3px rgba(255, 255, 255, 0.5);
    line-height: 1.3;
}

.tech-text p {
    font-size: 1.3rem;
    line-height: 1.9;
    color: #444444;
    text-shadow: 1px 1px 2px rgba(255, 255, 255, 0.3);
}

.tech-visual-container {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.tech-visual {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow-heavy);
}

.tech-visual img {
    width: 100%;
    height: auto;
    display: block;
}

.tech-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, rgba(0, 102, 204, 0.3), rgba(0, 68, 153, 0.3));
    display: flex;
    align-items: center;
    justify-content: center;
}

.tech-features {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    padding: 1.5rem;
    background: var(--primary-color);
    border-radius: 15px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    transition: var(--transition-smooth);
}

.feature-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-heavy);
    background: #1a1a1a;
}

.feature-icon {
    font-size: 2rem;
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-secondary);
    border-radius: 50%;
    flex-shrink: 0;
    color: var(--text-white);
}

.feature-text h4 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-white);
}

.feature-text p {
    font-size: 1rem;
    color: #cccccc;
    margin: 0;
}

/* 공통 섹션 헤더 */
.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-header h2 {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 1rem;
    color: #1a1a1a;
    text-align: center;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.section-header p {
    font-size: 1.5rem;
    font-weight: 400;
    color: #666666;
    text-align: center;
    letter-spacing: 0.05em;
}

/* 인테리어 & 익스테리어 섹션 */
.features-section {
    padding: 8rem 0;
    background: linear-gradient(135deg, #2d3436 0%, #1a1a1a 100%);
    position: relative;
    overflow: visible;
}

.features-section .section-header h2 {
    color: #ffffff;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.features-section .section-header p {
    color: #cccccc;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3);
}

/* 피처 탭 스타일 */
.features-tabs {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.tab-btn {
    padding: 1rem 2.5rem;
    font-size: 1.1rem;
    font-weight: 600;
    border: 2px solid rgba(255, 255, 255, 0.5);
    background: transparent;
    color: rgba(255, 255, 255, 0.8);
    border-radius: 50px;
    cursor: pointer;
    transition: var(--transition-smooth);
    min-width: 120px;
}

.tab-btn:hover {
    border-color: var(--accent-color);
    color: var(--accent-color);
    transform: translateY(-2px);
}

.tab-btn.active {
    background: var(--accent-color);
    color: var(--text-white);
    border-color: var(--accent-color);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 102, 204, 0.3);
}

/* 피처 컨테이너 */
.features-container {
    position: relative;
    min-height: 400px;
}

.features-content {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.features-content.active {
    opacity: 1;
    visibility: visible;
    position: relative;
}

/* PC 그리드 레이아웃 - 명시적으로 설정 */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    width: 100%;
}

/* 피처 아이템 스타일 */
section#featuresSection .feature-item {
    background: transparent;
    border: 0;
    box-shadow: none;
    border-radius: 20px;
    overflow: hidden;
    position: relative;
    padding: 0;
    transition: var(--transition-smooth);
    width: 100%;
}

section#featuresSection .feature-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

section#featuresSection .feature-image {
    width: 100%;
    aspect-ratio: 16 / 9;
    position: relative;
    overflow: hidden;
    margin: 0;
}

section#featuresSection .feature-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: var(--transition-smooth);
}

section#featuresSection .feature-item:hover .feature-image img {
    transform: scale(1.05);
}

section#featuresSection .feature-title {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    padding: 1.5rem 1.5rem 1.2rem;
    background: linear-gradient(
        to top,
        rgba(0, 0, 0, 0.85) 0%,
        rgba(0, 0, 0, 0.55) 55%,
        transparent 100%
    );
    margin: 0;
    pointer-events: none;
}

section#featuresSection .feature-title h4 {
    margin: 0;
    color: #fff;
    font-size: 1.2rem;
    font-weight: 600;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.4);
}

/* 색상 섹션 */
.color-section {
    padding: 8rem 0;
    background: var(--bg-light);
    position: relative;
    z-index: 1;
}

.color-selector {
    max-width: 1000px;
    margin: 0 auto;
}

.color-options {
    display: flex;
    justify-content: center;
    gap: 3rem;
    margin-bottom: 4rem;
    flex-wrap: wrap;
}

.color-option {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    cursor: pointer;
    transition: var(--transition-smooth);
    padding: 1rem;
    border-radius: 10px;
}

.color-option:hover,
.color-option.active {
    background: var(--secondary-color);
    box-shadow: var(--shadow-light);
}

.color-circle {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    border: 3px solid var(--secondary-color);
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

.color-option.active .color-circle {
    border-color: var(--accent-color);
    transform: scale(1.1);
}

/* 색상 스타일 */
.polar-white {
    background: linear-gradient(135deg, #F7F9FB 0%, #EDF1F4 52%, #DFE5EA 100%);
    border: 2px solid #D3D9DF;
}

.space-black {
    background: linear-gradient(135deg, #0D0F12 0%, #14161A 38%, #000000 100%);
    border: 2px solid #1A1D21;
}

.indigo-grey {
    background: linear-gradient(135deg, #9AA7B2 0%, #6F7B89 50%, #4B5663 100%);
    border: 2px solid #5B6673;
}

.color-option span {
    font-size: 1.1rem;
    font-weight: 500;
    color: #333333;
    text-align: center;
}

.color-showcase {
    position: relative;
    height: 500px;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow-heavy);
}

/* 슬라이더 스타일 */
.car-slider {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 0.5s ease;
    visibility: hidden;
}

.car-slider.active {
    opacity: 1;
    visibility: visible;
}

.slider-container {
    position: relative;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.slider-wrapper {
    display: flex;
    width: 200%;
    height: 100%;
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.slide {
    width: 50%;
    height: 100%;
    flex-shrink: 0;
}

.slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

/* 슬라이더 네비게이션 버튼 */
.slider-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(0, 0, 0, 0.6);
    color: white;
    border: none;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-smooth);
    z-index: 10;
    backdrop-filter: blur(10px);
}

.slider-nav:hover {
    background: rgba(0, 0, 0, 0.8);
    transform: translateY(-50%) scale(1.1);
}

.slider-nav.prev {
    left: 20px;
}

.slider-nav.next {
    right: 20px;
}

.slider-nav svg {
    width: 24px;
    height: 24px;
}

/* 슬라이더 컨트롤 (일시정지 버튼) */
.slider-controls {
    position: absolute;
    top: 20px;
    right: 20px;
    z-index: 15;
    display: flex;
    gap: 10px;
}

/* 일시정지 버튼 - 점 스타일로 변경 */
.pause-btn {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.7);
    border: 2px solid rgba(255, 255, 255, 0.9);
    cursor: pointer;
    transition: var(--transition-smooth);
    backdrop-filter: blur(10px);
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0;
}

.pause-btn:hover {
    background: rgba(255, 255, 255, 1);
    transform: scale(1.2);
}

.pause-btn.paused {
    background: rgba(0, 102, 204, 0.8);
    border-color: var(--accent-color);
}

.pause-btn.playing {
    background: rgba(255, 255, 255, 0.7);
}

/* 슬라이더 인디케이터 */
.slider-indicators {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: 10;
    flex-direction: row;
}

.indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    transition: var(--transition-smooth);
    border: 2px solid rgba(255, 255, 255, 0.8);
}

.indicator.active {
    background: rgba(255, 255, 255, 1);
    transform: scale(1.2);
}

.indicator:hover {
    background: rgba(255, 255, 255, 0.8);
    transform: scale(1.1);
}

/* CTA 섹션 */
.cta-section {
    padding: 8rem 0;
    background: var(--gradient-primary);
    text-align: center;
}

.cta-content h2 {
    font-size: 3rem;
    font-weight: 700;
    color: var(--text-white);
    margin-bottom: 1rem;
}

.cta-content p {
    font-size: 1.3rem;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.btn-primary,
.btn-secondary {
    padding: 1rem 2.5rem;
    font-size: 1.1rem;
    font-weight: 600;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    transition: var(--transition-smooth);
    text-decoration: none;
    display: inline-block;
    min-width: 200px;
}

.btn-primary {
    background: var(--accent-color);
    color: var(--text-white);
}

.btn-primary:hover {
    background: #0052a3;
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(0, 102, 204, 0.4);
}

.btn-secondary {
    background: transparent;
    color: var(--text-white);
    border: 2px solid var(--text-white);
}

.btn-secondary:hover {
    background: var(--text-white);
    color: var(--primary-color);
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(255, 255, 255, 0.2);
}

/* 애니메이션 클래스 */
.animate {
    opacity: 0;
    transform: translateY(50px);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.animate.fadeInUp {
    opacity: 1;
    transform: translateY(0);
}

/* 푸터 텍스트 색상 수정 - 영역별로 구분 */
/* .gray 영역 (고객만족센터, 공지사항 등) - 검은색 글씨 */
footer .gray,
footer .gray h1,
footer .gray p,
footer .gray a,
footer .gray span {
    color: #333333 !important;
}

footer .gray .num {
    color: #cc0000 !important;
}

/* .dark 영역 (회사정보, 이용약관 등) - 흰색 글씨 */
footer .dark,
footer .dark a,
footer .dark span,
footer .dark p {
    color: #ffffff !important;
}

footer .dark a {
    text-decoration-color: rgba(255, 255, 255, 0.5);
}

footer .dark a:hover {
    text-decoration-color: rgba(255, 255, 255, 0.8);
}

/* 반응형 디자인 - 태블릿 */
@media (min-width: 769px) and (max-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.8rem;
    }
    
    .tech-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .tech-text {
        padding-right: 0;
    }
    
    .hero-specs {
        gap: 2rem;
    }
    
    .color-options {
        gap: 2rem;
    }
}

/* 반응형 디자인 - 모바일 */
@media (max-width: 768px) {
    /* 컨테이너 */
    .container {
        padding: 0 15px;
    }
    
    /* 히어로 섹션 - 모바일 높이 최적화 (헤더 높이 고려) */
    .hero-section {
        min-height: calc(100vh - 60px);
        max-height: calc(100vh - 60px);
        height: calc(100vh - 60px);
    }
    
    .hero-video {
        object-fit: cover;
        object-position: center;
        min-height: 100vh;
        width: 100vw;
    }
    
    .hero-title {
        font-size: clamp(2rem, 6vw, 4rem);
        margin-bottom: 0.8rem;
    }
    
    .hero-subtitle {
        font-size: 1.2rem;
        margin-bottom: 1.5rem;
    }
    
    /* 상담신청 버튼 - 모바일 */
    .hero-cta-btn {
        padding: 0.9rem 2.5rem;
        font-size: 1rem;
        margin-top: 1.5rem;
        margin-bottom: 1rem;
    }
    
    .hero-specs {
        flex-direction: column;
        gap: 1.5rem;
        margin-bottom: 1.5rem;
    }
    
    .spec-value {
        font-size: 2.5rem;
    }
    
    .hero-disclaimer {
        margin-top: 1rem;
    }
    
    .hero-disclaimer p {
        font-size: 0.75rem;
    }
    
    /* 섹션 헤더 */
    .section-header h2,
    .tech-text h2,
    .cta-content h2 {
        font-size: 2rem;
    }
    
    .section-header p {
        font-size: 1.2rem;
    }
    
    /* 기술 섹션 - 모바일: 순서 조정 */
    .technology-section {
        padding: 4rem 0;
    }
    
    .tech-content {
        grid-template-columns: 1fr;
        gap: 3rem;
        display: grid;
    }
    
    .tech-text {
        padding-right: 0;
    }
    
    .tech-text h2 {
        font-size: 2rem;
    }
    
    .tech-text p {
        font-size: 1.1rem;
    }
    
    /* 모바일: 이미지와 검은박스 순서 뒤집기 (검은박스가 위로) */
    .tech-visual-container {
        display: flex;
        flex-direction: column-reverse;
        gap: 2rem;
    }
    
    .tech-features {
        gap: 1.5rem;
    }
    
    .feature-item {
        flex-direction: column;
        text-align: center;
        padding: 1.2rem;
    }
    
    /* 피처 섹션 */
    .features-section {
        padding: 4rem 0;
        margin-bottom: 0;
    }
    
    .features-tabs {
        gap: 1rem;
        padding: 0 10px;
    }
    
    .tab-btn {
        padding: 0.7rem 1.5rem;
        font-size: 0.95rem;
        min-width: 100px;
        flex: 1;
    }
    
    /* 피처 그리드 - 모바일 슬라이더 */
    .features-container {
        min-height: 350px;
        overflow: visible;
    }
    
    .features-grid {
        display: block;
        position: relative;
        overflow: hidden;
        width: 100%;
        grid-template-columns: none;
    }
    
    /* 모바일 슬라이더 래퍼 - 미디어쿼리 안에서만 적용 */
    .mobile-features-slider {
        display: flex !important;
        transition: transform 0.4s ease;
        will-change: transform;
    }
    
    .mobile-features-slider .feature-item {
        flex-shrink: 0 !important;
        margin: 0 !important;
        width: 100vw !important;
        max-width: calc(100vw - 30px) !important;
        padding: 0 !important;
    }
    
    section#featuresSection .feature-image {
        aspect-ratio: 16 / 9;
        height: auto;
    }
    
    section#featuresSection .feature-title {
        padding: 1rem 1rem 0.8rem;
    }
    
    section#featuresSection .feature-title h4 {
        font-size: 1rem;
    }
    
    /* 모바일 슬라이더 네비게이션 */
    .mobile-slider-nav {
        position: absolute;
        top: 50%;
        transform: translateY(-50%);
        background: rgba(0, 0, 0, 0.6);
        color: white;
        border: none;
        width: 40px;
        height: 40px;
        border-radius: 50%;
        cursor: pointer;
        display: flex;
        align-items: center;
        justify-content: center;
        z-index: 10;
        backdrop-filter: blur(10px);
    }
    
    .mobile-slider-nav.prev {
        left: 10px;
    }
    
    .mobile-slider-nav.next {
        right: 10px;
    }
    
    /* 모바일 슬라이더 인디케이터 */
    .mobile-slider-indicators {
        display: flex;
        justify-content: center;
        gap: 8px;
        margin-top: 1.5rem;
        flex-direction: row;
    }
    
    .mobile-indicator {
        width: 10px;
        height: 10px;
        border-radius: 50%;
        background: rgba(255, 255, 255, 0.5);
        cursor: pointer;
        transition: all 0.3s ease;
        border: 2px solid rgba(255, 255, 255, 0.8);
    }
    
    .mobile-indicator.active {
        background: var(--accent-color);
        transform: scale(1.2);
    }
    
    /* 색상 섹션 */
    .color-section {
        padding: 4rem 0;
        margin-top: 0;
    }
    
    /* 색상 옵션 - 가로 배치 */
    .color-options {
        flex-direction: row;
        justify-content: center;
        gap: 1.5rem;
        margin-bottom: 2rem;
    }
    
    .color-circle {
        width: 60px;
        height: 60px;
    }
    
    .color-option span {
        font-size: 0.9rem;
    }
    
    .color-showcase {
        height: 350px;
    }
    
    /* 슬라이더 네비게이션 - 모바일 */
    .slider-nav {
        width: 40px;
        height: 40px;
    }
    
    .slider-nav.prev {
        left: 10px;
    }
    
    .slider-nav.next {
        right: 10px;
    }
    
    .slider-nav svg {
        width: 20px;
        height: 20px;
    }
    
    /* 슬라이더 인디케이터 - 모바일 */
    .slider-indicators {
        bottom: 15px;
        gap: 8px;
        flex-direction: row;
    }
    
    .indicator {
        width: 10px;
        height: 10px;
    }
    
    /* 일시정지 버튼 - 모바일 */
    .pause-btn {
        width: 12px;
        height: 12px;
    }
    
    .slider-controls {
        top: 15px;
        right: 15px;
    }
    
    /* CTA 섹션 */
    .cta-section {
        padding: 4rem 0;
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .btn-primary,
    .btn-secondary {
        padding: 0.8rem 2rem;
        font-size: 1rem;
        min-width: 180px;
    }
    
    /* 로딩 스크린 */
    .loading-logo {
        font-size: 2rem;
    }
    
    .loading-text {
        font-size: 1rem;
    }
}

/* 작은 모바일 */
@media (max-width: 480px) {
    .hero-content {
        padding: 0 15px;
    }
    
    .color-circle {
        width: 50px;
        height: 50px;
    }
    
    .color-option span {
        font-size: 0.85rem;
    }
    
    .color-showcase {
        height: 280px;
    }
}

/* 접근성 개선 */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}