/* Shared left navigation sidebar — included on all authenticated pages */
.nav-layout {
    display: flex;
    min-height: calc(100vh - 85px);
}

.nav-sidebar {
    width: 220px;
    min-width: 220px;
    background: #ffffff;
    border-right: 1px solid #d1d5db;
    padding: 16px 0;
    position: sticky;
    top: 85px;
    height: calc(100vh - 85px);
    overflow-y: auto;
}

[data-theme="dark"] .nav-sidebar { background: #161b22; border-color: #30363d; }

.nav-sidebar::-webkit-scrollbar { width: 4px; }
.nav-sidebar::-webkit-scrollbar-track { background: transparent; }
.nav-sidebar::-webkit-scrollbar-thumb { background: #d1d5db; border-radius: 4px; }
[data-theme="dark"] .nav-sidebar::-webkit-scrollbar-thumb { background: #30363d; }

.nav-section { padding: 4px 0 12px; }

.nav-section-title {
    font-size: 0.68rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    color: #656d76;
    padding: 6px 16px 8px;
}

[data-theme="dark"] .nav-section-title { color: #8b949e; }

.nav-link {
    display: block;
    padding: 9px 16px;
    color: #656d76;
    text-decoration: none;
    font-size: 0.84rem;
    border-left: 3px solid transparent;
    transition: all 0.15s;
}

.nav-link:hover {
    color: #1f2328;
    background: #f6f8fa;
    border-left-color: #2563eb;
}

.nav-link.nav-active {
    color: #2563eb;
    background: #eff6ff;
    border-left-color: #2563eb;
    font-weight: 500;
}

[data-theme="dark"] .nav-link { color: #8b949e; }
[data-theme="dark"] .nav-link:hover { color: #e6edf3; background: #1c2128; border-left-color: #58a6ff; }
[data-theme="dark"] .nav-link.nav-active { color: #58a6ff; background: #1a2332; border-left-color: #58a6ff; }

.nav-section + .nav-section {
    border-top: 1px solid #e5e7eb;
    margin-top: 4px;
    padding-top: 12px;
}

[data-theme="dark"] .nav-section + .nav-section { border-color: #21262d; }

.nav-layout > :not(.nav-sidebar) {
    flex: 1;
    min-width: 0;
}

@media (max-width: 768px) {
    .nav-layout { flex-direction: column; }
    .nav-sidebar {
        width: 100%; min-width: 100%;
        height: auto; position: static;
        display: flex; flex-wrap: wrap;
        padding: 8px 0;
        border-right: none;
        border-bottom: 1px solid #d1d5db;
    }
    [data-theme="dark"] .nav-sidebar { border-bottom-color: #30363d; }
    .nav-section { padding: 4px 0; }
    .nav-section + .nav-section { border-top: none; margin-top: 0; padding-top: 4px; }
    .nav-section-title { padding: 4px 12px 4px; }
    .nav-link { padding: 6px 12px; font-size: 0.8rem; border-left: none; }
}