/* assets/css/components.css */
.nav-menu {
    list-style-type: none;
    flex-grow: 1;
}
.nav-item a {
    display: flex;
    align-items: center;
    padding: 1rem 1.5rem;
    color: var(--sidebar-text-color);
    text-decoration: none;
    font-size: 1rem;
    position: relative;
    transition: all 0.3s ease;
}
.nav-item a::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 0;
    background-color: var(--accent-color);
    border-radius: 0 4px 4px 0;
    transition: height 0.3s ease;
}
.nav-item a:hover, .nav-item a.active {
    color: var(--sidebar-nav-active-text-color);
    background-color: var(--sidebar-nav-hover-bg-color);
}
.nav-item a:hover::before, .nav-item a.active::before {
    height: 80%;
}
.nav-item a i {
    margin-right: 1rem;
    width: 20px;
    text-align: center;
    transition: transform 0.3s ease;
}
.nav-item a:hover i {
    transform: scale(1.2) rotate(5deg);
}
.search-container {
    margin-bottom: 3rem;
    position: relative;
    z-index: 10;
}
.search-wrapper {
    position: relative;
    display: flex;
    flex-direction: column;
}
.search-box {
    width: 100%;
    padding: 1rem 1.5rem 1rem 4rem;
    font-size: 1.2rem;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    background-color: rgba(var(--card-bg-color-rgb), var(--search-bg-opacity));
    color: var(--search-text-color);
    transition: all 0.3s ease, background-color 0.5s ease, border-color 0.5s ease, color 0.5s ease;
    backdrop-filter: blur(var(--blur-strength));
    -webkit-backdrop-filter: blur(var(--blur-strength));
}
.search-box::placeholder {
    color: var(--search-placeholder-color);
    opacity: 1;
}
.search-box:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: var(--search-shadow-focus);
    transform: scale(1.01);
}
.search-engine-selector {
    position: absolute;
    left: 15px;
    top: 50%;
    transform: translateY(-50%);
    cursor: pointer;
    width: 28px;
    height: 28px;
    border-radius: 8px;
    background-color: transparent;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: bold;
    color: var(--search-icon-color);
    overflow: hidden;
    border: 1px solid transparent;
    transition: border-color 0.2s ease, background-color 0.5s ease, color 0.5s ease;
    z-index: 1;
}
.search-engine-selector img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 8px;
}
.search-engine-selector .fallback-icon {
    font-size: 0.8em;
}
.search-engine-selector:hover {
    border-color: var(--accent-color);
}
.search-engine-dropdown {
    position: absolute;
    top: calc(100% + 5px);
    left: 0;
    right: 0;
    background-color: rgba(var(--card-bg-color-rgb), var(--dropdown-bg-opacity));
    border: 1px solid var(--border-color);
    border-radius: 8px;
    box-shadow: var(--dropdown-shadow);
    list-style: none;
    padding: 0.5rem 0;
    max-height: 0;
    overflow: hidden;
    display: block;
    z-index: 100;
    transition: max-height 0.3s ease-out, opacity 0.3s ease-out, background-color 0.5s ease, border-color 0.5s ease;
    backdrop-filter: blur(var(--blur-strength));
    -webkit-backdrop-filter: blur(var(--blur-strength));
    opacity: 0;
}
.search-engine-dropdown.visible {
    max-height: 300px;
    opacity: 1;
}
.search-engine-dropdown li {
    display: flex;
    align-items: center;
    padding: 0.75rem 1rem;
    cursor: pointer;
    transition: background-color 0.2s ease, color 0.2s ease;
    color: var(--text-secondary-color);
}
.search-engine-dropdown li:hover {
    background-color: var(--autocomplete-hover-bg);
    color: var(--autocomplete-hover-text-color);
}
.search-engine-dropdown li .engine-icon {
    width: 24px;
    height: 24px;
    border-radius: 6px;
    margin-right: 0.75rem;
    flex-shrink: 0;
    background-color: transparent;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.7rem;
    font-weight: bold;
    color: var(--text-color);
    overflow: hidden;
    transition: background-color 0.5s ease, color 0.5s ease;
}
.search-engine-dropdown li .engine-icon img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 6px;
}
.search-engine-dropdown li:hover .engine-icon {
    background-color: rgba(255, 255, 255, 0.3);
}
.search-autocomplete {
    position: absolute;
    top: calc(100% + 5px);
    left: 0;
    right: 0;
    background-color: rgba(var(--card-bg-color-rgb), var(--autocomplete-bg-opacity));
    border: 1px solid var(--border-color);
    border-radius: 8px;
    box-shadow: var(--dropdown-shadow);
    list-style: none;
    padding: 0.5rem 0;
    max-height: 0;
    overflow: hidden;
    display: block;
    z-index: 99;
    backdrop-filter: blur(var(--blur-strength));
    -webkit-backdrop-filter: blur(var(--blur-strength));
    opacity: 0;
    transform-origin: top center;
    transition: max-height 0.3s ease-out, opacity 0.3s ease-out, transform 0.3s ease-out, background-color 0.5s ease, border-color 0.5s ease;
}
.search-autocomplete.visible {
    max-height: 500px;
    opacity: 1;
    transform: translateY(0) scale(1);
}
.search-autocomplete li {
    padding: 0.75rem 1rem;
    cursor: pointer;
    transition: background-color 0.2s ease, color 0.2s ease;
    color: var(--text-secondary-color);
}
.search-autocomplete li:nth-child(odd) {
    background-color: var(--autocomplete-odd-bg);
}
.search-autocomplete li:nth-child(even) {
    background-color: var(--autocomplete-even-bg);
}
.search-autocomplete li:hover, .search-autocomplete li.selected {
    background-color: var(--autocomplete-hover-bg);
    color: var(--autocomplete-hover-text-color);
}
.category-section {
    margin-bottom: 3rem;
}
.category-title {
    grid-column: 1 / -1;
    font-size: 1.8rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: var(--text-color);
    transition: color 0.5s ease;
    opacity: 0;
    animation: fadeInUp 0.6s ease forwards;
}
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, 280px);
    gap: 1.5rem;
    justify-content: center;
}
.card {
    background: rgba(var(--card-bg-color-rgb), var(--card-bg-opacity));
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
    text-decoration: none;
    display: flex;
    align-items: center;
    backdrop-filter: blur(var(--blur-strength));
    -webkit-backdrop-filter: blur(var(--blur-strength));
    transition: transform 0.3s cubic-bezier(0.25, 0.8, 0.25, 1), box-shadow 0.3s cubic-bezier(0.25, 0.8, 0.25, 1), background-color 0.5s ease, border-color 0.5s ease;
    animation: fadeInUp 0.5s ease backwards;
    color: inherit;
    box-shadow: var(--card-shadow);
}
.card:hover {
    transform: translateY(-5px);
    box-shadow: var(--card-shadow-hover);
}
.card-icon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    margin-right: 1.2rem;
    flex-shrink: 0;
    background-color: transparent;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: var(--text-color);
    overflow: hidden;
    transition: transform 0.4s cubic-bezier(0.25, 0.8, 0.25, 1), background-color 0.5s ease, color 0.5s ease;
}
.card-icon img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 10px;
}
.card-icon .fallback-icon {
    font-size: 1.2em;
}
.menu-toggle {
    display: none;
    position: relative;
    background-color: transparent;
    color: var(--text-color);
    border: none;
    border-radius: 8px;
    cursor: pointer;
    z-index: 1001;
    padding: 0.5rem;
    transition: color 0.5s ease, transform 0.3s ease;
    width: 48px;
    height: 48px;
}
.menu-toggle:active {
    transform: scale(0.95);
}
.menu-toggle .icon-open,
.menu-toggle .icon-close {
    position: absolute;
    top: 50%;
    left: 50%;
    font-size: 1.8rem;
    transition: transform 0.4s cubic-bezier(0.2, 1, 0.3, 1), opacity 0.3s ease;
}
.menu-toggle .icon-open {
    transform: translate(-50%, -50%) rotate(0deg) scale(1);
    opacity: 1;
}
.menu-toggle .icon-close {
    transform: translate(-50%, -50%) rotate(-180deg) scale(0);
    opacity: 0;
}
body.sidebar-open .menu-toggle .icon-open {
    transform: translate(-50%, -50%) rotate(180deg) scale(0);
    opacity: 0;
}
body.sidebar-open .menu-toggle .icon-close {
    transform: translate(-50%, -50%) rotate(0deg) scale(1);
    opacity: 1;
}
@media (max-width: 992px) {
    #mobile-menu-toggle-placeholder .menu-toggle {
        display: flex;
    }
    body.sidebar-open #mobile-menu-toggle-placeholder .menu-toggle {
        display: none;
    }
    .sidebar-header .menu-toggle {
        display: flex;
    }
    body:not(.sidebar-open) .sidebar-header .menu-toggle {
        display: none;
    }
}