/* Resources Dropdown Styles */
.resources-dropdown {
    min-width: 320px;
    max-height: 600px;
    overflow-y: auto;
}

.dropdown-header {
    padding: 12px 16px 8px;
    font-weight: 600;
    color: var(--primary-color);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    display: flex;
    align-items: center;
    border-bottom: 1px solid #e5e7eb;
    margin-bottom: 8px;
}

.class-item {
    padding: 12px 16px !important;
    display: flex;
    align-items: center;
    gap: 12px;
    transition: all 0.3s ease;
    position: relative;
}

.class-item:hover {
    background: linear-gradient(135deg, rgba(47, 128, 237, 0.1) 0%, rgba(26, 35, 126, 0.05) 100%);
    color: var(--primary-color);
}

.class-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--navbar-color) 100%);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 700;
    font-size: 1.1rem;
}

.class-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.class-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--primary-text);
}

.class-subtitle {
    font-size: 0.8rem;
    color: var(--secondary-text);
}

.dropdown-arrow {
    color: var(--secondary-text);
    font-size: 0.8rem;
    transition: transform 0.2s ease;
}

.class-item:hover .dropdown-arrow {
    transform: translateX(3px);
    color: var(--primary-color);
}

/* Critical: Dropdown submenu positioning and display */
.dropdown-submenu {
    position: relative;
}

.dropdown-submenu .dropdown-menu {
    top: 0 !important;
    left: 100% !important;
    margin-top: 0 !important;
    margin-left: 8px !important;
    display: none !important;
    min-width: 300px;
    border: 1px solid rgba(0,0,0,.15);
    border-radius: 8px;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.dropdown-submenu:hover > .dropdown-menu {
    display: block !important;
}

.dropdown-submenu > .dropdown-toggle::after {
    display: none;
}

/* Submenu styles */
.submenu-dropdown {
    min-width: 300px;
    padding: 8px;
}

.submenu-header {
    padding: 10px 16px 6px;
    font-weight: 600;
    color: var(--primary-color);
    font-size: 0.85rem;
    border-bottom: 1px solid #e5e7eb;
    margin-bottom: 6px;
}

.resource-item {
    padding: 10px 16px !important;
    display: flex;
    align-items: center;
    gap: 12px;
    transition: all 0.2s ease;
    border-radius: 8px;
    margin-bottom: 4px;
}

.resource-item:hover {
    background: rgba(47, 128, 237, 0.08);
    color: var(--primary-text);
}

.resource-icon {
    width: 35px;
    height: 35px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1rem;
}

.resource-icon.science {
    background: linear-gradient(135deg, #4CAF50 0%, #2E7D32 100%);
}

.resource-icon.social-science {
    background: linear-gradient(135deg, #FF9800 0%, #E65100 100%);
}

.resource-icon.pyq {
    background: linear-gradient(135deg, #9C27B0 0%, #4A148C 100%);
}

.resource-icon.important {
    background: linear-gradient(135deg, #FF5722 0%, #BF360C 100%);
}

.resource-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.resource-title {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--primary-text);
}

.resource-desc {
    font-size: 0.75rem;
    color: var(--secondary-text);
}

.submenu-divider {
    margin: 8px 0;
    border-color: #e5e7eb;
}

/* Admin Items */
.admin-item {
    padding: 10px 16px !important;
    display: flex;
    align-items: center;
    gap: 12px;
    transition: all 0.2s ease;
}

.admin-item:hover {
    background: rgba(220, 38, 38, 0.05);
    color: var(--primary-text);
}

.admin-icon {
    width: 35px;
    height: 35px;
    background: linear-gradient(135deg, #dc2626 0%, #991b1b 100%);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1rem;
}

.admin-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.admin-title {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--primary-text);
}

.admin-desc {
    font-size: 0.75rem;
    color: var(--secondary-text);
}

/* Mobile responsive for dropdown */
@media (max-width: 768px) {
    .resources-dropdown {
        position: static !important;
        max-width: 100% !important;
        margin: 0 !important;
        box-shadow: none !important;
        border: 1px solid #e5e7eb;
    }

    .dropdown-submenu .dropdown-menu {
        position: static !important;
        display: none !important;
        left: auto !important;
        top: auto !important;
        margin: 0 !important;
        border: none !important;
        box-shadow: none !important;
        background: #f8f9fa;
        border-radius: 0;
    }

    .dropdown-submenu:hover > .dropdown-menu {
        display: block !important;
    }

    .class-item {
        flex-direction: column;
        align-items: flex-start !important;
        gap: 8px !important;
    }

    .class-icon {
        align-self: center;
    }

    .dropdown-arrow {
        align-self: flex-end;
        margin-top: -20px;
    }
}