:root {
    --bg-light: #fff;
    --bg-dark: #1e1e2f;
    --text-light: #1e1e2f;
    --text-dark: #fff;
    --primary: #512da8;
    --transition: all 0.3s ease;
}

body {
    margin: 0;
    font-family: Arial, sans-serif;
    background: #f0f2f5;
    transition: var(--transition);
}

html.dark body {
    background: #121212;
    color: #fff;
}

html.dark .main-content {
    color: #fff;
}


.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    height: 100%;
    width: 250px;
    background: var(--bg-light);
    color: var(--text-light);
    transition: none;
    box-shadow: 2px 0 10px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.sidebar.animations-enabled {
    transition: width 0.3s ease, background 0.3s ease, color 0.3s ease;
}
.sidebar.dark {
    background: var(--bg-dark);
    color: var(--text-dark);
}



.sidebar .header {
    display: flex;
    align-items: center;
    padding: 20px;
    gap: 12px;
}

.sidebar .header img {
    width: 45px;
    height: 45px;
    border-radius: 50%;
}

.sidebar .header .info {
    white-space: nowrap;
    overflow: hidden;
    opacity: 1;
    transition: opacity 0.2s ease;
}

.sidebar.collapsed .header .info {
    opacity: 0;
    width: 0;
}

.menu {
    display: flex;
    flex-direction: column;
    gap: 12px;
    padding: 10px 15px;
}

.menu-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 14px 18px;
    cursor: pointer;
    border-radius: 10px;
    transition: var(--transition);
    white-space: nowrap;
    overflow: hidden;
}

.menu-item:hover,
.menu-item.active {
    background: var(--primary);
    color: #fff;
}

.menu-item span {
    transition: opacity 0.2s ease;
}

.sidebar.collapsed .menu-item span {
    opacity: 0;
    width: 0;
}

.bottom {
    padding: 15px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.toggle-theme,
.toggle-sidebar {
    display: flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
    padding: 12px 15px;
    border-radius: 10px;
    transition: var(--transition);
    white-space: nowrap;
    overflow: hidden;
}

.toggle-theme:hover,
.toggle-sidebar:hover {
    background: rgba(0, 0, 0, 0.05);
}

.toggle-theme span,
.toggle-sidebar span {
    transition: opacity 0.2s ease;
}

.sidebar.collapsed .toggle-theme span,
.sidebar.collapsed .toggle-sidebar span {
    opacity: 0;
    width: 0;
}

.switch {
    margin-left: auto;
}

input[type="checkbox"] {
    width: 40px;
    height: 20px;
    appearance: none;
    background: #ccc;
    border-radius: 20px;
    position: relative;
    outline: none;
    cursor: pointer;
    transition: var(--transition);
}

input[type="checkbox"]::before {
    content: "";
    position: absolute;
    width: 18px;
    height: 18px;
    background: #fff;
    border-radius: 50%;
    top: 1px;
    left: 1px;
    transition: var(--transition);
}

input[type="checkbox"]:checked {
    background: var(--primary);
}

input[type="checkbox"]:checked::before {
    transform: translateX(20px);
}

.main-content {
    margin-left: 250px;
    padding: 40px;
    transition: margin-left 0.3s ease;
    font-size: 24px;
    line-height: 1.8;
}

.sidebar.collapsed~.main-content {
    margin-left: 80px;
}

.welcome-message {
    max-width: 100%;
    word-wrap: break-word;
}