:root {
    --sidebar-width: 250px;
    --sidebar-width-collapsed: 80px;
}

.sidebar {
    width: var(--sidebar-width);
    height: 100vh;
    background-color: #2a2a2a;
    border-right: 1px solid #3a3a3a;
    transition: all 0.2s ease;
}

.sidebar.collapsed {
    width: var(--sidebar-width-collapsed);
}

.sidebar.logo {
    padding: 0 20px 30px;
}

.sidebar-link {
    color: #a0a3bd;
    transition: all 0.2s ease;
    border-radius: 8px;
    margin: 4px 16px;
    white-space: nowrap;
    overflow: hidden;
}

.sidebar-link:hover {
    color: #ffffff;
    background: rgba(255, 255, 255, 0.1);
    transform: translateX(5px);
}

.sidebar-link.active {
    background: rgba(255, 255, 255, 0.1);
}

.logo-text {
    background: linear-gradient(45deg, #6b8cff, #5a9fd4);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    transition: opacity 0.3s ease;
}

.notification-badge {
    background: #ff6b6b;
    padding: 2px 6px;
    border-radius: 6px;
    font-size: 0.7rem;
}

.profile-section {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.main-content {
    margin-left: var(--sidebar-width);
    /*background-color: #f8f9fa;*/
    min-height: 100vh;
    padding: 20px;
    transition: all 0.3s ease;
}

.collapsed~.main-content {
    margin-left: var(--sidebar-width-collapsed);
}

.toggle-btn {
    color: #7f59ef;
    position: absolute;
    right: -15px;
    top: 20px;
    /*background: white;*/
    border-radius: 50%;
    border: none;
    border-right: 2px solid #7f59ef;
    width: 30px;
    height: 30px;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.15);
    z-index: 100;
    cursor: pointer;
    transition: transform 0.3s ease;
    font-weight: 600;
}

.collapsed .toggle-btn {
    transform: rotate(180deg);
}

.collapsed .hide-on-collapse {
    opacity: 0;
    visibility: hidden;
}

.collapsed .logo-text {
    opacity: 0;
}

.collapsed .profile-info {
    opacity: 0;
}

.collapsed .sidebar-link {
    background: none;
    /*text-align: center;*/
    padding: 1rem !important;
    margin: 4px 8px;
}

.collapsed .sidebar-link i {
    margin: 0 !important;
}

.profile-info {
    transition: opacity 0.2s ease;
}