.nav-drawer {
    position: fixed;
    top: 0;
    left: -300px;
    width: 300px;
    height: 100vh;
    background-color: var(--md-sys-color-surface);
    z-index: 101;
    transition: transform 0.3s ease;
    box-shadow: var(--md-sys-elevation-2);
}

.nav-drawer--open {
    transform: translateX(300px);
}

.nav-drawer__header {
    padding: 24px 16px;
    background-color: var(--md-sys-color-primary);
    color: var(--md-sys-color-on-primary);
}

.nav-drawer__title {
    font-size: 1.25rem;
    font-weight: 500;
}

.nav-drawer__subtitle {
    font-size: 0.875rem;
    opacity: 0.8;
}

.nav-item {
    display: flex;
    align-items: center;
    padding: 12px 16px;
    color: var(--md-sys-color-on-surface);
    text-decoration: none;
    transition: background-color 0.2s;
}

.nav-item {
    position: relative;
    padding-left: 16px;
}

.nav-item__icon {
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    margin-right: 0;
}

.nav-item__text {
    padding-left: 40px;
}

.nav-item[href^="doc/"],
.nav-item[href^="tools/"],
.nav-item[href^="mdviewer"],
.nav-item[href^="http"] {
    padding-left: 32px;
}

.nav-item[href^="doc/"] .nav-item__icon,
.nav-item[href^="tools/"] .nav-item__icon,
.nav-item[href^="mdviewer"] .nav-item__icon,
.nav-item[href^="http"] .nav-item__icon {
    left: 32px;
}

.divider {
    height: 1px;
    background-color: var(--md-sys-color-surface-variant);
    margin: 8px 0;
}