/* ==========================================================================
   헤더 및 네비게이션 스타일
   ========================================================================== */

/* 헤더 */
.site-header {
    background-color: var(--bg-primary);
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 1000;
    height: var(--header-height);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--header-height);
}

/* 로고 */
.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    transition: transform var(--transition-fast);
}

.logo-text {
    font-family: 'Aggravo', 'Paperozi', sans-serif;
}

.logo:hover {
    transform: scale(1.05);
    color: var(--text-primary);
}

.logo-icon {
    font-size: 1.75rem;
}

.logo-text {
    display: inline-block;
}

/* 모바일 메뉴 토글 버튼 */
.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    padding: var(--spacing-sm);
    background: transparent;
    border: none;
    cursor: pointer;
    z-index: 1001;
}

.hamburger {
    width: 24px;
    height: 3px;
    background-color: var(--text-primary);
    border-radius: 2px;
    transition: all var(--transition-normal);
}

.menu-toggle[aria-expanded="true"] .hamburger:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.menu-toggle[aria-expanded="true"] .hamburger:nth-child(2) {
    opacity: 0;
}

.menu-toggle[aria-expanded="true"] .hamburger:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

/* 네비게이션 */
.main-nav {
    display: flex;
    align-items: center;
}

.nav-list {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.nav-item {
    position: relative;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius);
    color: var(--text-secondary);
    font-weight: 500;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.nav-link:hover {
    background-color: var(--bg-gray);
    color: var(--primary-color);
}

.nav-link.active {
    background-color: var(--primary-color);
    color: white;
}

.nav-icon {
    font-size: 1.125rem;
}

/* 드롭다운 */
.dropdown {
    position: relative;
}

.dropdown-toggle {
    cursor: pointer;
}

.dropdown-arrow {
    font-size: 0.75rem;
    transition: transform var(--transition-normal);
}

.dropdown:hover .dropdown-arrow,
.dropdown.active .dropdown-arrow {
    transform: rotate(180deg);
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    right: 0;
    min-width: 200px;
    background-color: var(--bg-primary);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    padding: var(--spacing-sm);
    margin-top: var(--spacing-xs);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-normal);
}

.dropdown:hover .dropdown-menu,
.dropdown.active .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-link {
    display: block;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius);
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.dropdown-link:hover {
    background-color: var(--bg-gray);
    color: var(--primary-color);
}

/* 태블릿 이하 반응형 */
@media (max-width: 768px) {
    .menu-toggle {
        display: flex;
    }
    
    .main-nav {
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        background-color: var(--bg-primary);
        box-shadow: var(--shadow-lg);
        max-height: 0;
        overflow: hidden;
        transition: max-height var(--transition-normal);
    }
    
    .main-nav.active {
        max-height: calc(100vh - var(--header-height));
        overflow-y: auto;
    }
    
    .nav-list {
        flex-direction: column;
        align-items: stretch;
        padding: var(--spacing-md);
        gap: 0;
    }
    
    .nav-item {
        border-bottom: 1px solid var(--border-color);
    }
    
    .nav-item:last-child {
        border-bottom: none;
    }
    
    .nav-link {
        padding: var(--spacing-md);
        justify-content: space-between;
    }
    
    .dropdown-menu {
        position: static;
        box-shadow: none;
        margin: 0;
        padding-left: var(--spacing-lg);
        opacity: 1;
        visibility: visible;
        transform: none;
        max-height: 0;
        overflow: hidden;
        transition: max-height var(--transition-normal);
    }
    
    .dropdown.active .dropdown-menu {
        max-height: 500px;
        padding-top: var(--spacing-sm);
        padding-bottom: var(--spacing-sm);
    }
    
    .dropdown-link {
        padding: var(--spacing-sm) var(--spacing-md);
    }
    
    .logo-text {
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    .logo-text {
        display: none;
    }
    
    .nav-link span:not(.nav-icon):not(.dropdown-arrow) {
        font-size: 0.9rem;
    }
}