/* Animation for menu items */
.nav-link {
    opacity: 0;
    transform: translateX(20px);
    transition: all var(--transition-normal);
}

.nav-menu.active .nav-link {
    opacity: 1;
    transform: translateX(0);
}

.nav-menu.active .nav-link:nth-child(1) { transition-delay: 0.1s; }
.nav-menu.active .nav-link:nth-child(2) { transition-delay: 0.2s; }
.nav-menu.active .nav-link:nth-child(3) { transition-delay: 0.3s; }
.nav-menu.active .nav-link:nth-child(4) { transition-delay: 0.4s; }
.nav-menu.active .nav-link:nth-child(5) { transition-delay: 0.5s; }
.nav-menu.active .nav-link:nth-child(6) { transition-delay: 0.6s; }
.nav-menu.active .nav-link:nth-child(7) { transition-delay: 0.7s; }
.nav-menu.active .nav-link:nth-child(8) { transition-delay: 0.8s; }
.nav-menu.active .nav-link:nth-child(9) { transition-delay: 0.9s; }
.nav-menu.active .nav-link:nth-child(10) { transition-delay: 1.0s; }
.nav-menu.active .nav-link:nth-child(11) { transition-delay: 1.1s; }

/* 스크롤 인디케이터 */
.nav-scroll-indicator {
    position: absolute;
    top: 100px;
    right: 10px;
    bottom: 120px;
    width: 4px;
    opacity: 0;
    transition: opacity var(--transition-normal);
    pointer-events: none;
    z-index: 10;
}

.scroll-track {
    width: 100%;
    height: 100%;
    background: rgba(44, 122, 44, 0.1);
    border-radius: 2px;
    position: relative;
    overflow: hidden;
}

.scroll-thumb {
    width: 100%;
    height: 20%;
    background: var(--primary-gradient);
    border-radius: 2px;
    transition: transform var(--transition-fast);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
}

/* 스크롤 힌트 (처음 메뉴 열 때만 표시) */
.nav-scroll-hint {
    position: absolute;
    bottom: 140px;
    right: 20px;
    font-size: var(--fs-xs);
    color: var(--text-light);
    opacity: 0;
    animation: scrollHintFade 3s ease-in-out;
    pointer-events: none;
}

@keyframes scrollHintFade {
    0% { opacity: 0; }
    20% { opacity: 1; }
    80% { opacity: 1; }
    100% { opacity: 0; }
}

/* 터치 디바이스를 위한 스크롤 영역 강조 */
@media (hover: none) and (pointer: coarse) {
    .nav-menu-content {
        /* 터치 디바이스에서 스크롤 가능 영역 표시 */
        border-right: 2px solid rgba(44, 122, 44, 0.1);
    }

    .nav-scroll-indicator {
        opacity: 1 !important;
        width: 6px;
        right: 8px;
    }

    .scroll-thumb {
        background: rgba(44, 122, 44, 0.4);
    }
}

/* 키보드 네비게이션 포커스 스타일 강화 */
.nav-menu-content:focus {
    outline: 2px solid var(--primary-green);
    outline-offset: -2px;
}

.nav-link a:focus {
    outline: 2px solid var(--primary-green);
    outline-offset: 2px;
    background: rgba(44, 122, 44, 0.15) !important;
}

/* 스크롤바 스타일 향상 */
.nav-menu-content::-webkit-scrollbar {
    width: 8px;
}

.nav-menu-content::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.05);
    border-radius: 4px;
    margin: 100px 0 120px 0;
}

.nav-menu-content::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, rgba(44, 122, 44, 0.3), rgba(44, 122, 44, 0.5));
    border-radius: 4px;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.nav-menu-content::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(180deg, rgba(44, 122, 44, 0.5), rgba(44, 122, 44, 0.7));
}

.nav-menu-content::-webkit-scrollbar-thumb:active {
    background: linear-gradient(180deg, rgba(44, 122, 44, 0.7), rgba(44, 122, 44, 0.9));
}

/* Firefox 스크롤바 스타일링 */
.nav-menu-content {
    scrollbar-width: thin;
    scrollbar-color: rgba(44, 122, 44, 0.4) rgba(0, 0, 0, 0.05);
}/* Navigation Styles */

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 80px;
    background: var(--bg-overlay-light);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    z-index: var(--z-fixed);
    transition: var(--transition-normal);
}

.header.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-light);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    padding: 0 var(--spacing-xl);
    max-width: 1200px;
    margin: 0 auto;
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    font-size: var(--fs-2xl);
    font-weight: 700;
    color: var(--primary-green);
    text-decoration: none;
    z-index: var(--z-modal);
}

.logo:hover {
    color: var(--secondary-green);
}

.logo-text {
    margin-left: var(--spacing-sm);
}

.logo-subtitle {
    font-size: var(--fs-xs);
    font-weight: 400;
    color: var(--text-secondary);
    display: block;
    line-height: 1;
    margin-top: 2px;
}

/* Hamburger Button */
.hamburger {
    position: relative;
    width: 30px;
    height: 30px;
    cursor: pointer;
    z-index: var(--z-modal);
    background: none;
    border: none;
    padding: 0;
}

.hamburger-line {
    position: absolute;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--text-primary);
    border-radius: 1px;
    transition: var(--transition-normal);
    transform-origin: center;
}

.hamburger-line:nth-child(1) {
    top: 6px;
}

.hamburger-line:nth-child(2) {
    top: 14px;
}

.hamburger-line:nth-child(3) {
    top: 22px;
}

/* Hamburger Animation - Active State */
.hamburger.active .hamburger-line:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

.hamburger.active .hamburger-line:nth-child(2) {
    opacity: 0;
}

.hamburger.active .hamburger-line:nth-child(3) {
    transform: rotate(-45deg) translate(8px, -8px);
}

/* Navigation Menu */
.nav-menu {
    position: fixed;
    top: 0;
    right: 0;
    width: 400px;
    height: 100vh;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    transform: translateX(100%);
    transition: transform var(--transition-slow);
    z-index: var(--z-popover);
    display: flex;
    flex-direction: column;
    border-left: 1px solid rgba(44, 122, 44, 0.1);
    overflow: hidden; /* 스크롤 컨테이너를 위한 설정 */
}

.nav-menu.active {
    transform: translateX(0);
}

/* Navigation Overlay */
.nav-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: rgba(0, 0, 0, 0.3);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-slow);
    z-index: var(--z-modal);
}

.nav-overlay.active {
    opacity: 1;
    visibility: visible;
}

/* Navigation Links Container */
.nav-menu-content {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    padding-top: 100px;
    padding-bottom: var(--spacing-xl);
    scrollbar-width: thin;
    scrollbar-color: rgba(44, 122, 44, 0.3) transparent;
}

/* Custom Scrollbar for Webkit browsers */
.nav-menu-content::-webkit-scrollbar {
    width: 6px;
}

.nav-menu-content::-webkit-scrollbar-track {
    background: transparent;
}

.nav-menu-content::-webkit-scrollbar-thumb {
    background: rgba(44, 122, 44, 0.3);
    border-radius: 3px;
    transition: var(--transition-normal);
}

.nav-menu-content::-webkit-scrollbar-thumb:hover {
    background: rgba(44, 122, 44, 0.5);
}

/* Navigation Links */
.nav-links {
    list-style: none;
    padding: 0 var(--spacing-xl);
}

.nav-link {
    margin-bottom: var(--spacing-md);
}

.nav-link a {
    display: flex;
    align-items: center;
    padding: var(--spacing-lg) var(--spacing-md);
    font-size: var(--fs-lg);
    font-weight: 500;
    color: var(--text-primary);
    text-decoration: none;
    border-radius: var(--radius-lg);
    transition: var(--transition-normal);
    position: relative;
}

.nav-link a:hover {
    background: rgba(44, 122, 44, 0.1);
    color: var(--primary-green);
    transform: translateX(8px);
}

.nav-link a::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 0;
    background: var(--primary-gradient);
    border-radius: 0 2px 2px 0;
    transition: var(--transition-normal);
}

.nav-link a:hover::before {
    height: 60%;
}

/* Navigation Icons */
.nav-icon {
    width: 20px;
    height: 20px;
    margin-right: var(--spacing-md);
    opacity: 0.7;
    transition: var(--transition-normal);
}

.nav-link a:hover .nav-icon {
    opacity: 1;
}

/* Navigation Footer */
.nav-footer {
    flex-shrink: 0;
    padding: var(--spacing-xl);
    border-top: 1px solid rgba(44, 122, 44, 0.1);
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(10px);
}

.nav-footer-text {
    font-size: var(--fs-sm);
    color: var(--text-light);
    text-align: center;
    line-height: 1.4;
}

.nav-footer-slogan {
    font-weight: 600;
    color: var(--primary-green);
    margin-top: var(--spacing-sm);
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .nav {
        padding: 0 var(--spacing-lg);
    }

    .nav-menu {
        width: 100vw;
    }

    .nav-menu-content {
        padding-top: 80px;
    }

    .logo {
        font-size: var(--fs-xl);
    }

    .nav-links {
        padding: 0 var(--spacing-lg);
    }

    .nav-link a {
        font-size: var(--fs-base);
        padding: var(--spacing-md);
    }
}

@media (max-width: 480px) {
    .nav {
        padding: 0 var(--spacing-md);
    }

    .logo {
        font-size: var(--fs-lg);
    }

    .hamburger {
        width: 25px;
        height: 25px;
    }

    .hamburger-line:nth-child(1) { top: 5px; }
    .hamburger-line:nth-child(2) { top: 12px; }
    .hamburger-line:nth-child(3) { top: 19px; }
}

/* Animation for menu items */
.nav-link {
    opacity: 0;
    transform: translateX(20px);
    transition: all var(--transition-normal);
}

.nav-menu.active .nav-link {
    opacity: 1;
    transform: translateX(0);
}

.nav-menu.active .nav-link:nth-child(1) { transition-delay: 0.1s; }
.nav-menu.active .nav-link:nth-child(2) { transition-delay: 0.2s; }
.nav-menu.active .nav-link:nth-child(3) { transition-delay: 0.3s; }
.nav-menu.active .nav-link:nth-child(4) { transition-delay: 0.4s; }
.nav-menu.active .nav-link:nth-child(5) { transition-delay: 0.5s; }
.nav-menu.active .nav-link:nth-child(6) { transition-delay: 0.6s; }
.nav-menu.active .nav-link:nth-child(7) { transition-delay: 0.7s; }
.nav-menu.active .nav-link:nth-child(8) { transition-delay: 0.8s; }
.nav-menu.active .nav-link:nth-child(9) { transition-delay: 0.9s; }
.nav-menu.active .nav-link:nth-child(10) { transition-delay: 1.0s; }