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

body {
    font-family: var(--font-family-base);
    color: var(--text-dark);
    line-height: var(--line-height-default);
    background: var(--white);
    overflow-x: hidden;
}
/* Header Styles */
header {
    background: var(--white);
    border-bottom: 1px solid var(--color-border-default);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: var(--z-header);
    transition: var(--transition-base);
}
nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 var(--space-8);
    height: var(--header-height-desktop);
    max-width: var(--layout-max-width);
    margin: 0 auto;
}
.logo-container {
    display: flex;
    align-items: center;
    gap: var(--space-gap);
}
.logo-container > a {
    display: flex;
    align-items: center;
    gap: var(--space-gap);
    text-decoration: none;
}
.logo {
    width: var(--max-logo-size);
    height: var(--max-logo-size);
    background-image: url('../images/icons/netplace-logo-icon.svg');
    background-repeat: no-repeat;
    background-position: center;
    background-size: contain;
}
@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}
.logo-text {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-strong);
}
.nav-menu {
    display: flex;
    gap: var(--space-5);
}
.nav-item {
    padding: 13px var(--space-5);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    color: var(--color-nav-text);
    text-decoration: none;
    transition: var(--transition-base);
    border-radius: var(--radius-md);
    position: relative;
}
.nav-item::after {
    content: '';
    position: absolute;
    bottom: -7px; /* nav 하단에 맞추기 위해 조정 */
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: var(--transition-base);
    transform: translateX(-50%);
}
.nav-item:hover::after,
.nav-item.active::after {
    width: 80%;
    bottom: -5px;
}
.nav-item.active {
    color: var(--primary-color);
    bottom: -3px;
}

.nav-item:hover {
    color: var(--primary-color);
    transform: scale(1.1); /* 레이아웃 리플로우 없이 크기 확대 */
    transform-origin: center center;
    z-index: var(--z-floating); /* 다른 요소와 겹침 방지 */
}

.nav-item.active:hover {
    bottom: 0;
}
/* header [E] */
/* main [S] */
main {
    width: 100%;
    margin: 0 auto;
    padding-top: var(--header-height-desktop); /* 고정 헤더 높이만큼 패딩 추가 */
}
main .first-container, .second-container, .third-container, .fourth-container, .fifth-container {
    max-width: var(--layout-max-width);
    margin: 0 auto;
}

main .no-max-width {
    max-width: 100%;
}
@media (max-width: 768px) {
    main {
        padding-top: var(--header-height-mobile); /* 모바일에서는 더 큰 패딩 */
    }
}
main > section > .header-container {
    padding: var(--space-11) var(--space-11) 0 var(--space-11);
}

/* footer [S] */
/* Footer */
footer {
    background: var(--dark-bg);
    color: var(--text-inverse);
    padding: var(--footer-padding-vertical) var(--footer-padding-horizontal);
}

footer .container {
    display: flex;
    flex-direction: column;
    gap: var(--space-8);
    align-items: stretch;
    max-width: var(--layout-max-width);
    margin: 0 auto;
}

.footer-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 48px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--space-1);
    width: 340px;
}

.footer-logo-icon {
    width: 28px;
    height: 28px;
    background-image: url('../images/icons/netplace-logo-icon.svg');
    background-repeat: no-repeat;
    background-position: center;
    background-size: contain;
}

.footer-logo-text {
    font-family: var(--font-family-heading);
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    line-height: var(--line-height-tight);
    color: var(--text-inverse);
}

.footer-socials {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: var(--space-4);
    flex: 1;
}

.footer-socials img {
    width: var(--space-6);
    height: var(--space-6);
    cursor: pointer;
    transition: var(--transition-base);
}

.footer-socials img:hover {
    transform: scale(1.1);
    opacity: 0.8;
}

.footer-business-info {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: var(--space-gap);
    height: 61px;
}

.footer-info-line {
    display: flex;
    align-items: center;
    gap: var(--space-6);
    width: 100%;
    justify-content: flex-start; /* PC에서는 좌측 정렬 */
}

.footer-info-text {
    font-family: var(--font-family-base);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-regular);
    line-height: var(--line-height-tight);
    color: var(--text-inverse);
    white-space: nowrap;
}

.footer-divider {
    width: 1px;
    height: 100%;
    background-color: var(--color-neutral-300);
    min-height: var(--space-4);
    flex-shrink: 0;
}

.footer-copyright {
    display: flex;
    justify-content: center;
    width: 100%;
}

.footer-copyright span {
    font-family: var(--font-family-base);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-regular);
    line-height: var(--line-height-tight);
    color: var(--text-inverse);
    text-align: center;
}

/* 모바일 반응형 */
@media (max-width: 768px) {
    footer {
        padding: var(--space-7) var(--space-5);
        gap: var(--space-7);
    }
    
    .footer-top {
        flex-direction: column;
        gap: var(--space-6);
        align-items: center;
    }
    
    .footer-logo {
        width: auto;
        justify-content: center;
    }
    
    .footer-logo-text {
        font-size: var(--font-size-xl);
    }
    
    .footer-socials {
        justify-content: center;
        gap: var(--space-5);
    }
    
    .footer-business-info {
        gap: var(--space-4);
        height: auto;
    }
    
    .footer-info-line {
        flex-direction: column;
        gap: var(--space-2);
        text-align: center;
    }
    
    .footer-divider {
        display: none;
    }
    
    .footer-info-text {
        font-size: var(--font-size-sm);
        white-space: normal;
        text-align: center;
    }
    
    .footer-copyright span {
        font-size: var(--font-size-sm);
    }
}

@media (max-width: 480px) {
    footer {
        padding: var(--space-6) var(--space-4);
    }
    
    .footer-logo-text {
        font-size: var(--font-size-lg);
    }
    
    .footer-socials img {
        width: var(--space-5);
        height: var(--space-5);
    }
    
    .footer-info-text {
        font-size: var(--font-size-xs);
    }
    
    .footer-copyright span {
        font-size: var(--font-size-xs);
    }
}
/* footer [E] */
  /* Mobile Menu Button */
.mobile-menu-button {
    display: none;
    background: none;
    border: none;
    font-size: var(--font-size-2xl);
    cursor: pointer;
    color: var(--text-dark);
    text-indent: -9999px; /* 텍스트 숨김 */
    overflow: hidden;
}

/* 데스크톱에서는 완전히 숨김 */
@media (min-width: 769px) {
    .mobile-menu-button {
        display: none !important;
    }
    
    .nav-menu {
        display: flex !important;
    }
}
/* Mobile Menu JavaScript Toggle */
.nav-menu.mobile-open {
    display: flex !important;
}

/* Responsive Design */
@media (max-width: 768px) {
    /* 모바일 네비게이션 기본 설정 */
    nav {
        padding: var(--space-4);
        height: auto;
        min-height: var(--header-height-desktop);
    }
    
    /* 로고 컨테이너 모바일 설정 */
    .logo-container {
        flex: 1;
    }
    
    .logo {
        width: var(--icon-size-sm);
        height: var(--icon-size-sm);
    }

    .logo-text {
        font-size: var(--font-size-xl);
        font-weight: var(--font-weight-bold);
    }
    
    /* 데스크톱 메뉴 숨김 */
    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        padding: var(--space-5) var(--space-4);
        box-shadow: var(--shadow-md);
        border-top: 1px solid var(--color-border-default);
        z-index: var(--z-floating);
    }
    
    .nav-menu.active {
        display: flex;
    }
    
    .nav-item {
        padding: var(--space-4) 0;
        text-align: left;
        border-bottom: 1px solid var(--color-neutral-100);
        width: 100%;
    }
    
    .nav-item:last-child {
        border-bottom: none;
    }
    
    .nav-item::after {
        display: none;
    }
    
    /* 모바일 메뉴 버튼 표시 */
    .mobile-menu-button {
        display: flex;
        align-items: center;
        justify-content: center;
        padding: var(--space-4) var(--space-2);
        border-radius: var(--radius-lg);
        gap: var(--space-4);
        height: var(--control-height-md);
        min-width: var(--control-height-md);
        background: none;
        border: none;
        cursor: pointer;
        transition: var(--transition-base);
    }
    
    .mobile-menu-button:hover {
        background: rgba(0, 0, 0, 0.05);
    }
    
    .mobile-menu-button:active {
        background: rgba(0, 0, 0, 0.1);
    }
    
    /* 메뉴 아이콘 스타일 */
    .mobile-menu-button::before {
        content: '';
        width: var(--icon-size-lg);
        height: var(--icon-size-lg);
        background-image: url('../images/icons/mobile-button.svg');
        background-repeat: no-repeat;
        background-position: center;
        background-size: contain;
    }
    
    /* 기타 모바일 스타일 */
    .hero-section {
        height: 600px;
    }
    .slide-content h1 {
        font-size: 32px;
    }
    .slide-content p {
        font-size: var(--space-4);
    }
    .search-section {
        flex-direction: column;
        bottom: 120px;
    }
    .section-header h2 {
        font-size: 28px;
    }
    .search-area {
        flex-direction: column;
        align-items: center;
    }
    .search-input-container {
        max-width: 100%;
        width: 100%;
    }
    .text-content .main-title {
        font-size: var(--space-6);
    }
    .text-content .description {
        font-size: 14px;
    }
    .social-icons {
        flex-wrap: wrap;
        gap: var(--space-5);
    }
    .social-icon {
        width: 60px;
        height: 60px;
        font-size: var(--space-30);
    }
    .process-grid {
        grid-template-columns: 1fr;
    }
    .cta-title {
        font-size: 32px;
    }
    .footer-top {
        flex-direction: column;
        gap: var(--space-30);
    }
    .review-nav {
        display: none;
    }
}
  /* Loading Animation */
.loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: var(--z-loader);
    transition: opacity var(--transition-slow);
}
.loader.hidden {
    opacity: 0;
    pointer-events: none;
}
.loader-inner {
    width: var(--loader-size);
    height: var(--loader-size);
    border: var(--loader-border-width) solid var(--bg-light);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin var(--duration-spinner) linear infinite;
}
@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ===== BUTTON COMPONENT ===== */
.button,
.button2 {
    transition: var(--button-transition);
}

.button:hover,
.button2:hover {
    transform: translateY(-2px) scale(1.1) !important;
    box-shadow: var(--button-hover-shadow);
}

.button:focus-visible,
.button2:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
    box-shadow: var(--button-hover-shadow);
}

.button:active,
.button2:active {
    transform: translateY(0);
    box-shadow: var(--shadow-button-active);
}

/* Mobile-specific button interactions */
@media (max-width: 768px) {
    .button:active,
    .button2:active {
        background: var(--primary-70);
        border-color: var(--primary-70);
        transform: scale(0.98);
    }
}

/* ===== KAKAO FLOATING BUTTON ===== */
.kakao-floating-btn {
    position: fixed;
    bottom: var(--space-5);
    right: var(--space-5);
    width: 120px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    z-index: var(--z-floating);
    cursor: pointer;
    animation: kakaoBounce 2s infinite ease-in-out;
    padding: var(--space-2);
    transition: var(--transition-base);
}

.kakao-btn-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-1);
    width: 100%;
}

.kakao-icon {
    width: var(--icon-size-md);
    height: var(--icon-size-md);
    border-radius: 25%;
    object-fit: cover;
    transition: transform var(--transition-base);
}

.kakao-text {
    font-size: 11px;
    font-weight: 500;
    color: var(--primary-color);
    text-align: center;
    line-height: 1.2;
    white-space: nowrap;
    transition: var(--transition-base);
}

/* 호버 효과 - 플로팅 버튼에 자주 쓰이는 애니메이션 */
.kakao-floating-btn:hover {
    transform: translateY(-5px) scale(1.1);
    animation-play-state: paused;
}

.kakao-floating-btn:hover .kakao-icon {
    transform: rotate(10deg);
}

.kakao-floating-btn:hover .kakao-text {
    font-size: 13px;
    font-weight: 700;
}

.kakao-floating-btn:active {
    transform: translateY(-2px) scale(1.05);
    transition: var(--transition-fast);
}

/* 통통 튀는 애니메이션 */
@keyframes kakaoBounce {
    0%, 100% {
        transform: translateY(0) scale(1);
    }
    50% {
        transform: translateY(-var(--space-2)) scale(1.05);
    }
}

/* 모바일 반응형 */
@media (max-width: 768px) {
    .kakao-floating-btn {
        bottom: var(--space-7); /* 모바일 UI 간섭 방지 */
        right: var(--space-4);
        width: 100px;
        height: 70px;
    }
    
    .kakao-icon {
        width: var(--icon-size-sm);
        height: var(--icon-size-sm);
    }
    
    .kakao-text {
        font-size: var(--font-size-2xs);
    }
    
    .kakao-floating-btn:hover .kakao-text {
        font-size: var(--font-size-xs);
        font-weight: 700;
    }
}

/* 접근성: 애니메이션 감소 옵션 지원 */
@media (prefers-reduced-motion: reduce) {
    .kakao-floating-btn {
        animation: none;
        transition: none;
    }
    
    .kakao-floating-btn:hover {
        transform: none;
    }
    
    .kakao-icon {
        transition: none;
    }
    
    .kakao-text {
        transition: none;
    }
    
    .kakao-floating-btn:hover .kakao-icon {
        transform: none;
    }
    
    .kakao-floating-btn:hover .kakao-text {
        font-size: inherit;
        font-weight: inherit;
    }
}

/* ===== UTILITY CLASSES ===== */
/* 텍스트 정렬 */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

/* 마진 유틸리티 */
.mb-10 { margin-bottom: var(--space-gap); }
.mb-20 { margin-bottom: var(--space-5); }
.mb-30 { margin-bottom: var(--space-30); }
.mt-10 { margin-top: var(--space-gap); }
.mt-20 { margin-top: var(--space-5); }
.mt-30 { margin-top: var(--space-30); }

/* 비쥬 상태 */
.loading {
    opacity: 0.7;
    pointer-events: none;
    cursor: wait;
}

/* 에러 폴백 */
.error-fallback {
    text-align: center;
    padding: var(--space-8) var(--space-5);
    color: var(--text-light);
    background: var(--bg-light);
    border-radius: var(--radius-lg);
    margin: var(--space-5) 0;
}

/* 숨기기/보이기 */
.hidden { display: none !important; }
.visible { display: block !important; }

/* 반응형 이미지 */
.responsive-img {
    width: 100%;
    height: auto;
    object-fit: cover;
}

/* 플랙스 유틸리티 */
.flex-center {
    display: flex;
    align-items: center;
    justify-content: center;
}

.flex-between {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* 안전한 최대 너비 */
.safe-max-width {
    max-width: var(--layout-max-width);
    margin: 0 auto;
    padding: 0 var(--space-5);
}

.text-align-center {
    text-align: center !important;
}