feat: add fixed sidebar navigation with hover expand and mobile hamburger

Implements Task 3: fixed left sidebar (70px collapsed → 250px on hover) with
9 nav items, social links, active-state detection, and mobile hamburger toggle
that matches the existing sidebar-nav.js selectors.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
This commit is contained in:
2026-04-03 01:03:57 +05:00
parent 6befaedb8f
commit b47ad7bef4
15 changed files with 409 additions and 0 deletions
+200
View File
@@ -280,3 +280,203 @@ body.sidebar-overlay::after {
background-color: rgba(0, 0, 0, 0.4);
z-index: 199;
}
/* ==========================================================================
Sidebar navigation
========================================================================== */
/* Base sidebar */
.sidebar-nav {
position: fixed;
top: 0;
left: 0;
width: var(--sidebar-width-collapsed);
height: 100vh;
background: var(--color-white);
border-right: 1px solid var(--color-gray-light);
z-index: 1000;
display: flex;
flex-direction: column;
transition: width 0.25s ease;
overflow: hidden;
}
.sidebar-nav:hover {
width: var(--sidebar-width-expanded);
}
/* Logo area */
.sidebar-nav__logo {
display: flex;
align-items: center;
justify-content: center;
min-height: 60px;
border-bottom: 1px solid var(--color-gray-light);
flex-shrink: 0;
}
.sidebar-nav__logo a {
display: flex;
align-items: center;
justify-content: center;
text-decoration: none;
}
/* Menu / navigation area */
.sidebar-nav__menu {
flex: 1;
overflow-y: auto;
overflow-x: hidden;
}
.sidebar-nav__list {
list-style: none;
margin: 0;
padding: 0;
}
/* Individual links */
.sidebar-nav__link {
display: flex;
align-items: center;
gap: 16px;
padding: 12px 23px;
color: var(--color-black);
text-decoration: none;
white-space: nowrap;
transition:
background-color var(--transition-base),
color var(--transition-base);
}
.sidebar-nav__link:hover,
.sidebar-nav__link:focus {
background-color: var(--color-gray-light);
color: var(--color-black);
text-decoration: none;
}
/* Active item */
.sidebar-nav__item--active .sidebar-nav__link {
color: var(--color-primary);
font-weight: var(--font-weight-bold);
}
/* Icon */
.sidebar-nav__icon {
flex-shrink: 0;
width: 24px;
height: 24px;
}
/* Label — hidden when collapsed, visible when sidebar hovered */
.sidebar-nav__label {
opacity: 0;
transition: opacity 0.2s ease;
font-size: 0.9375rem; /* 15px */
}
.sidebar-nav:hover .sidebar-nav__label {
opacity: 1;
}
/* Social links at the bottom */
.sidebar-nav__social {
display: flex;
align-items: center;
justify-content: center;
gap: 12px;
padding: 16px;
border-top: 1px solid var(--color-gray-light);
flex-shrink: 0;
}
.sidebar-nav__social-link {
display: flex;
align-items: center;
justify-content: center;
color: var(--color-black);
opacity: 0.6;
transition: opacity var(--transition-base);
text-decoration: none;
}
.sidebar-nav__social-link:hover,
.sidebar-nav__social-link:focus {
opacity: 1;
text-decoration: none;
color: var(--color-black);
}
/* Content shift on desktop — push main content right of the sidebar */
.site-content,
.site-header,
.site-footer {
margin-left: var(--sidebar-width-collapsed);
}
/* Hamburger / toggle button */
.sidebar-nav__toggle {
display: none;
position: fixed;
top: 12px;
left: 12px;
z-index: 1100;
flex-direction: column;
gap: 4px;
align-items: center;
justify-content: center;
width: 44px;
height: 44px;
padding: 0;
background: var(--color-white);
border: 1px solid var(--color-gray-light);
cursor: pointer;
appearance: none;
-webkit-appearance: none;
}
.sidebar-nav__toggle:focus-visible {
outline: 2px solid var(--color-primary);
outline-offset: 2px;
}
.sidebar-nav__toggle-bar {
display: block;
width: 24px;
height: 2px;
background-color: var(--color-black);
transition: transform 0.2s ease, opacity 0.2s ease;
}
/* Mobile styles */
@media (max-width: 767px) {
/* Hide sidebar off-screen by default */
.sidebar-nav {
transform: translateX(-100%);
transition: transform 0.25s ease, width 0.25s ease;
width: var(--sidebar-width-expanded);
}
/* Show sidebar when open */
.sidebar-nav--open {
transform: translateX(0);
}
/* Always show labels on mobile when open */
.sidebar-nav .sidebar-nav__label {
opacity: 1;
}
/* Show hamburger button on mobile */
.sidebar-nav__toggle {
display: flex;
}
/* Remove content margin on mobile */
.site-content,
.site-header,
.site-footer {
margin-left: 0;
}
}