/* ===============================================
   Sidebar CSS
   =============================================== */

.sidebar {
    width: var(--sidebar-width);
    background-color: var(--bg-sidebar);
    border-right: 1px solid var(--border-color);
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    display: flex;
    flex-direction: column;
    z-index: 1000;
    transition: width var(--transition-base), transform var(--transition-base);
    overflow-x: hidden;
}

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

.sidebar__header {
    height: var(--navbar-height);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
}

.sidebar__logo {
    font-family: var(--font-heading);
    font-size: var(--fs-xl);
    font-weight: 700;
    color: var(--color-navy);
    white-space: nowrap;
}
html[data-theme="dark"] .sidebar__logo { color: #fff; }

.app-container.sidebar-collapsed .sidebar__logo { display: none; }

.sidebar__collapse-btn {
    color: var(--text-muted);
    padding: var(--spacing-xs);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}
.sidebar__collapse-btn:hover { color: var(--color-gold); background: var(--bg-hover); }

.sidebar__nav {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-md) var(--spacing-sm);
}

.sidebar__menu {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.sidebar__link {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-weight: 500;
    white-space: nowrap;
    transition: all var(--transition-fast);
    position: relative;
}

.sidebar__link:hover {
    background-color: var(--bg-hover);
    color: var(--color-navy);
}
html[data-theme="dark"] .sidebar__link:hover { color: #fff; }

.sidebar__link .icon { flex-shrink: 0; }

.sidebar__item.active .sidebar__link {
    background-color: var(--color-navy);
    color: #fff;
}
html[data-theme="dark"] .sidebar__item.active .sidebar__link {
    background-color: var(--color-gold);
    color: var(--color-navy);
}

/* Left gold accent for active item */
.sidebar__item.active .sidebar__link::before {
    content: '';
    position: absolute;
    left: -4px;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 60%;
    background-color: var(--color-gold);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.app-container.sidebar-collapsed .sidebar__link .link-text,
.app-container.sidebar-collapsed .sidebar__link .badge {
    display: none;
}
.app-container.sidebar-collapsed .sidebar__link {
    justify-content: center;
    padding: var(--spacing-md);
}

.sidebar__footer {
    padding: var(--spacing-md);
    border-top: 1px solid var(--border-color);
}
.sidebar__link--logout:hover {
    background-color: var(--color-danger-bg);
    color: var(--color-danger);
}

/* Mobile Overlay */
.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 999;
    opacity: 0;
    transition: opacity var(--transition-base);
}
.sidebar-overlay.active {
    display: block;
    opacity: 1;
}