/* ══════════════ SIDEBAR ══════════════ */
.sidebar {
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    width: var(--sidebar-w);
    background: var(--bg-sidebar);
    backdrop-filter: blur(24px) saturate(1.4);
    -webkit-backdrop-filter: blur(24px) saturate(1.4);
    border-right: 1px solid var(--border-subtle);
    display: flex;
    flex-direction: column;
    padding: 28px 18px;
    z-index: 100;
    transition: width var(--transition), padding var(--transition), transform var(--transition);
    overscroll-behavior: none;
    touch-action: none;
    overflow-x: hidden;
}

.sidebar,
.sidebar * {
    white-space: nowrap;
}

#sidebar-user-id {
    white-space: nowrap !important;
    overflow: hidden !important;
    text-overflow: ellipsis !important;
    word-break: normal !important;
}

.sidebar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
    min-height: 36px;
}

.sidebar-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 0 4px;
    overflow: hidden;
}

.sidebar-collapse-btn {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-subtle);
    background: rgba(255, 255, 255, 0.04);
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    flex-shrink: 0;
    transition: background var(--transition), color var(--transition), border-color var(--transition);
}

@media (hover: hover) {
    .sidebar-collapse-btn:hover {
        background: var(--accent-dim);
        color: var(--accent);
        border-color: var(--border-focus);
    }
}

.sidebar-collapse-btn .icon-expand {
    display: none;
}

.sidebar-collapse-btn .icon-collapse {
    display: block;
}

.brand-icon {
    font-size: 1.6rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.brand-text {
    font-weight: 800;
    font-size: 1.35rem;
    background: linear-gradient(135deg, var(--accent), var(--purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    white-space: nowrap;
}

.sidebar-tagline {
    margin: -12px 0 10px 4px;
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.02em;
    color: var(--text-secondary);
    overflow: hidden;
    text-overflow: ellipsis;
}

.sidebar-nav {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.nav-btn {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    font: 500 0.93rem var(--font);
    border-radius: var(--radius-sm);
    cursor: pointer;
    white-space: nowrap;
    overflow: hidden;
    transition: background var(--transition), color var(--transition), padding var(--transition), gap var(--transition);
}

.nav-text {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: clip;
}

@media (hover: hover) {
    .nav-btn:hover {
        background: var(--accent-dim);
        color: var(--text-primary);
    }
}

.nav-btn.active {
    background: var(--accent-dim);
    color: var(--accent);
    box-shadow: inset 3px 0 0 var(--accent);
}

.nav-icon {
    font-size: 1.15rem;
    flex-shrink: 0;
}

.sidebar-footer {
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding-top: 20px;
    border-top: 1px solid var(--border-subtle);
}

/* ══════════════ COLLAPSED STATE ══════════════ */
body.sidebar-collapsed .sidebar {
    padding: 24px 8px;
}

body.sidebar-collapsed .sidebar .sidebar-header {
    flex-direction: column;
    gap: 12px;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

body.sidebar-collapsed .sidebar .brand-text {
    display: none;
}

body.sidebar-collapsed .sidebar .sidebar-tagline {
    display: none;
}

body.sidebar-collapsed .sidebar #sidebar-user-id {
    display: none;
}

body.sidebar-collapsed .sidebar .sidebar-collapse-btn .icon-collapse {
    display: none;
}

body.sidebar-collapsed .sidebar .sidebar-collapse-btn .icon-expand {
    display: block;
}

body.sidebar-collapsed .sidebar .nav-btn {
    justify-content: center;
    padding: 12px 0;
    gap: 0;
    width: 100%;
}

body.sidebar-collapsed .sidebar .nav-btn .nav-text {
    display: none;
}

body.sidebar-collapsed .sidebar .nav-btn .nav-icon {
    margin: 0;
}

/* ══════════════ ANIMATING STATE (PREVENT WRAPPING) ══════════════ */
body.sidebar-animating .sidebar,
body.sidebar-animating .sidebar * {
    white-space: nowrap !important;
    overflow: hidden !important;
}