/* ===================================
   KoreaAvto About 페이지 전용 스타일
   =================================== */

/* 공통 섹션 스타일 */
section {
    padding: 80px 0;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: #1a1a1a;
}

.section-description {
    font-size: 1.1rem;
    line-height: 1.8;
    color: #555;
    max-width: 900px;
    margin: 0 auto;
}

/* Hero 섹션 */
.hero-section {
    background-image: url('/img/press_banner_large.jpg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    color: white;
    padding: 100px 0;
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.4);
    z-index: 0;
}

.hero-text-wrapper {
    position: relative;
    z-index: 1;
}

.hero-title {
    font-size: 2.2rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.25rem;
    line-height: 1.8;
    margin-bottom: 2rem;
    opacity: 0.95;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.hero-buttons .btn {
    padding: 12px 30px;
    font-weight: 600;
    border-radius: 50px;
    transition: all 0.3s ease;
}

.hero-buttons .btn-primary {
    background: white;
    color: #667eea;
    border: none;
}

.hero-buttons .btn-primary:hover {
    background: #f8f9fa;
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.15);
}

.hero-buttons .btn-outline-primary {
    border: 2px solid white;
    color: white;
    background: transparent;
}

.hero-buttons .btn-outline-primary:hover {
    background: white;
    color: #667eea;
    transform: translateY(-2px);
}


.hero-image-placeholder {
    background: rgba(255, 255, 255, 0.1);
    border: 2px dashed rgba(255, 255, 255, 0.3);
    border-radius: 20px;
    padding: 80px 40px;
    text-align: center;
    backdrop-filter: blur(10px);
}

.hero-image-placeholder i {
    opacity: 0.6;
}

/* Hero 페이드업 애니메이션 */
.fade-up {
    animation: fadeUp 0.8s ease-out;
}

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

/* 소개 섹션 */
.intro-section {
    background: #f8f9fa;
}

.intro-text {
    font-size: 1.1rem;
    line-height: 1.8;
    color: #555;
    margin-bottom: 1.5rem;
}

.trust-card {
    background: white;
    border-radius: 15px;
    padding: 25px;
    display: flex;
    align-items: flex-start;
    gap: 20px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
}

.trust-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.12);
}

.trust-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.trust-icon i {
    color: white;
    font-size: 1.5rem;
}

.trust-content h4 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: #1a1a1a;
}

.trust-content p {
    font-size: 0.95rem;
    color: #666;
    margin: 0;
}

/* 왜 한국 중고차인가 섹션 */
.why-korea-section {
    background: white;
}

.why-card {
    background: #f8f9fa;
    border-radius: 15px;
    padding: 35px 25px;
    text-align: center;
    height: 100%;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.why-card:hover {
    transform: scale(1.03);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
    border-color: #667eea;
}

.why-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.why-icon i {
    color: white;
    font-size: 2rem;
}

.why-card h4 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: #1a1a1a;
}

.why-card p {
    font-size: 1rem;
    line-height: 1.7;
    color: #666;
    margin: 0;
}

/* AI 기술력 섹션 */
.ai-tech-section {
    background: linear-gradient(180deg, #f8f9fa 0%, white 100%);
}

.ai-flow-container {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 20px;
    margin-top: 60px;
}

.ai-flow-step {
    background: white;
    border-radius: 20px;
    padding: 30px 20px;
    text-align: center;
    width: 200px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    position: relative;
}

.ai-flow-step:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

.ai-step-number {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.2rem;
}

.ai-step-icon {
    width: 70px;
    height: 70px;
    background: #f0f3ff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 20px auto 15px;
}

.ai-step-icon i {
    color: #667eea;
    font-size: 1.8rem;
}

.ai-flow-step h4 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 10px;
    color: #1a1a1a;
}

.ai-flow-step p {
    font-size: 0.9rem;
    line-height: 1.5;
    color: #666;
    margin: 0;
}

.ai-flow-arrow {
    color: #667eea;
    font-size: 2rem;
    flex-shrink: 0;
}

/* 에스크로 섹션 */
.escrow-section {
    background: white;
    padding: 100px 0;
}

.escrow-stepper {
    max-width: 900px;
    margin: 60px auto 0;
}

.escrow-step {
    display: flex;
    gap: 30px;
    margin-bottom: 40px;
    padding: 30px;
    background: #f8f9fa;
    border-radius: 15px;
    border-left: 5px solid #667eea;
    transition: all 0.3s ease;
}

.escrow-step:hover {
    background: white;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    border-left-width: 8px;
}

.escrow-step-number {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    flex-shrink: 0;
    transition: all 0.3s ease;
}

.escrow-step:hover .escrow-step-number {
    transform: scale(1.1);
}

.escrow-step-content {
    flex: 1;
}

.escrow-step-content h4 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 10px;
    color: #1a1a1a;
}

.escrow-step-content p {
    font-size: 1rem;
    line-height: 1.7;
    color: #666;
    margin: 0;
}

/* 딜러 혜택 섹션 */
.benefits-section {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.benefits-section .section-title {
    color: white;
}

.benefit-card {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 15px;
    padding: 35px 25px;
    text-align: center;
    height: 100%;
    transition: all 0.3s ease;
}

.benefit-card:hover {
    background: white;
    transform: translateY(-8px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.2);
}

.benefit-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.benefit-icon i {
    color: white;
    font-size: 2rem;
}

.benefit-card h4 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 15px;
    color: #1a1a1a;
}

.benefit-card p {
    font-size: 1rem;
    line-height: 1.7;
    color: #666;
    margin: 0;
}

/* 온보딩 섹션 */
.onboarding-section {
    background: #f8f9fa;
}

.onboarding-card {
    background: white;
    border-radius: 20px;
    padding: 40px 30px;
    text-align: center;
    height: 100%;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    position: relative;
}

.onboarding-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

.onboarding-number {
    position: absolute;
    top: -20px;
    left: 50%;
    transform: translateX(-50%);
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
}

.onboarding-icon {
    width: 90px;
    height: 90px;
    background: #f0f3ff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 20px auto 20px;
}

.onboarding-icon i {
    color: #667eea;
    font-size: 2.5rem;
}

.onboarding-card h4 {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 15px;
    color: #1a1a1a;
}

.onboarding-card p {
    font-size: 1rem;
    line-height: 1.7;
    color: #666;
    margin: 0;
}

/* FAQ 섹션 */
.faq-section {
    background: white;
    padding: 100px 0;
}

.accordion-item {
    border: none;
    margin-bottom: 15px;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.accordion-header {
    margin: 0;
}

.accordion-button {
    font-size: 1.1rem;
    font-weight: 600;
    padding: 20px 25px;
    background: white;
    color: #1a1a1a;
    border: none;
    box-shadow: none;
}

.accordion-button:not(.collapsed) {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.accordion-button:focus {
    box-shadow: none;
    border: none;
}

.accordion-button::after {
    filter: brightness(0);
}

.accordion-button:not(.collapsed)::after {
    filter: brightness(0) invert(1);
}

.accordion-body {
    padding: 25px;
    font-size: 1rem;
    line-height: 1.8;
    color: #555;
    background: #f8f9fa;
}

/* 문의 섹션 */
.contact-section {
    background: linear-gradient(180deg, white 0%, #f8f9fa 100%);
}

.contact-card {
    background: white;
    border-radius: 15px;
    padding: 40px 30px;
    text-align: center;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
}

.contact-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.12);
}

.contact-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.contact-icon i {
    color: white;
    font-size: 2rem;
}

.contact-card h4 {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 15px;
    color: #1a1a1a;
}

.contact-card p {
    margin: 0;
}

.contact-card a {
    font-size: 1.1rem;
    font-weight: 600;
    color: #667eea;
    text-decoration: none;
    transition: all 0.3s ease;
}

.contact-card a:hover {
    color: #764ba2;
    text-decoration: underline;
}

.email-protected {
    user-select: none;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    cursor: pointer;
}

/* 플로팅 WhatsApp 버튼 */
.whatsapp-float {
    position: fixed;
    bottom: 160px;
    right: 30px;
    width: 48px;
    height: 48px;
    background: #128C7E;
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    box-shadow: 0 5px 20px rgba(18, 140, 126, 0.5);
    z-index: 1001;
    transition: all 0.3s ease;
    animation: pulse 2s infinite;
}

.whatsapp-float:hover {
    background: #0d6e62;
    color: white;
    transform: scale(1.1);
    box-shadow: 0 8px 30px rgba(18, 140, 126, 0.7);
}

@keyframes pulse {
    0%, 100% {
        box-shadow: 0 5px 20px rgba(18, 140, 126, 0.5);
    }
    50% {
        box-shadow: 0 5px 30px rgba(18, 140, 126, 0.8);
    }
}

/* 반응형 디자인 - 태블릿 */
@media (max-width: 991px) {
    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.1rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .ai-flow-container {
        flex-direction: column;
    }

    .ai-flow-arrow {
        transform: rotate(90deg);
    }

    .escrow-step {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
}

/* 반응형 디자인 - 모바일 */
@media (max-width: 767px) {
    section {
        padding: 60px 0;
    }

    .hero-section {
        padding: 80px 0;
    }

    .hero-title {
        font-size: 1.75rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .hero-section {
        background-image: url('/img/press_banner_small.jpg');
    }

    .hero-buttons {
        flex-direction: column;
    }

    .hero-buttons .btn {
        width: 100%;
    }

    .section-title {
        font-size: 1.75rem;
    }

    .section-description {
        font-size: 1rem;
    }

    .ai-flow-step {
        width: 100%;
    }

    .whatsapp-float {
        bottom: 150px;
        right: 20px;
        width: 48px;
        height: 48px;
        font-size: 1.5rem;
    }

    .accordion-button {
        font-size: 1rem;
        padding: 15px 20px;
    }

    .accordion-body {
        padding: 20px;
        font-size: 0.95rem;
    }
}

/* 스크롤 부드러움 */
html {
    scroll-behavior: smooth;
}