/* =========================
   BASE NAV
========================= */

.fluent-nav {
    list-style: none;
    margin: 0;
    padding: var(--ms-space-xs);

    display: flex;
    flex-direction: column;
    gap: var(--ms-space-2xs);

    font-family: var(--ms-font);
}

/* =========================
   ITEM
========================= */

.fluent-nav-item {
    display: flex;
    flex-direction: column;
}

/* =========================
   SEPARATOR
========================= */

.fluent-nav-separator {
    height: 1px;
    margin: var(--ms-space-sm) var(--ms-space-md);
    background: var(--ms-color-border-subtle);
}

/* =========================
   TITLE (SECTION)
========================= */

.fluent-nav-title {
    padding: var(--ms-space-sm) var(--ms-space-md);

    font-size: var(--ms-font-size-caption);
    font-weight: var(--ms-font-weight-semi-bold);
    letter-spacing: 0.1em;

    color: var(--ms-color-text-secondary);
    margin-top: var(--ms-space-md);
    text-transform: uppercase;
}

/* =========================
   LINK (ROW)
========================= */

.fluent-nav-link {
    position: relative;

    display: flex;
    align-items: center;
    justify-content: space-between;

    padding: var(--ms-space-sm) var(--ms-space-md);
    margin: 0 var(--ms-space-xs);

    border-radius: var(--ms-radius-md);

    cursor: pointer;
    user-select: none;

    font-size: var(--ms-font-size-body);
    font-weight: var(--ms-font-weight-regular);
    line-height: var(--ms-line-height-normal);

    color: var(--ms-color-text-primary);

    transition:
        background var(--ms-motion-fast) var(--ms-ease),
        color var(--ms-motion-fast) var(--ms-ease),
        transform var(--ms-motion-fast) var(--ms-ease);
}

/* =========================
   HOVER (Fluent subtle)
========================= */

.fluent-nav-link:hover {
    background: var(--ms-color-neutral-hover);
}

/* press feel */
.fluent-nav-link:active {
    background: var(--ms-color-neutral-active);
    transform: scale(0.98);
}

/* =========================
   LEFT SIDE
========================= */

.fluent-nav-left {
    display: flex;
    align-items: center;
    gap: var(--ms-space-md);

    min-width: 0;
}

/* =========================
   ICON
========================= */

.fluent-nav-left .fluent-icon {
    opacity: var(--ms-opacity-hover);
}

/* =========================
   TEXT
========================= */

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

/* =========================
   RIGHT (CHEVRON)
========================= */

.fluent-nav-right {
    display: flex;
    align-items: center;

    opacity: var(--ms-opacity-muted);
}

/* rotate */
.fluent-nav-link.has-children .fluent-nav-right {
    transition: transform var(--ms-motion-base) var(--ms-ease);
}

.fluent-nav-link.has-children.is-open .fluent-nav-right {
    transform: rotate(90deg);
}

/* =========================
   ACTIVE STATE
========================= */

.fluent-nav-link.is-active {
    background: var(--ms-color-primary-subtle);
    color: var(--ms-color-primary);

    font-weight: var(--ms-font-weight-medium);
}

/* LEFT ACTIVE BAR (Outlook style) */
.fluent-nav-link.is-active::before {
    content: "";

    position: absolute;
    left: calc(-1 * var(--ms-space-xs));
    top: var(--ms-space-xs);
    bottom: var(--ms-space-xs);

    width: 3px;
    border-radius: var(--ms-radius-pill);

    background: var(--ms-color-primary);
}

/* =========================
   SUBMENU
========================= */

.fluent-submenu {
    list-style: none;
    margin: 0;
    padding: 0;

    display: none;
}

/* open */
.fluent-submenu.is-open {
    display: flex;
    flex-direction: column;
}

/* =========================
   INDENTATION (clean hierarchy)
========================= */

/*
.fluent-submenu .fluent-nav-link {
    padding-left: calc(var(--ms-space-md) + var(--ms-space-lg));
}
*/
.fluent-submenu .fluent-submenu .fluent-nav-link {
    padding-left: calc(var(--ms-space-md) + var(--ms-space-2xl));
}

/* =========================
   FOCUS (ACCESSIBILITY)
========================= */

.fluent-nav-link:focus-visible {
    outline: var(--ms-focus-ring-width) solid var(--ms-focus-ring-color);
    outline-offset: var(--ms-focus-ring-offset);
}

/* =========================
   DISABLED (optional)
========================= */

.fluent-nav-link.is-disabled {
    pointer-events: none;
    opacity: var(--ms-opacity-disabled);
}

/* =========================
   COLLAPSED SIDEBAR MODE
========================= */

.fluent-sidebar.is-collapsed .fluent-nav-text {
    display: none;
}

.fluent-sidebar.is-collapsed .fluent-nav-right {
    display: none;
}

.fluent-sidebar.is-collapsed .fluent-nav-link {
    justify-content: center;
    padding-left: var(--ms-space-sm);
    padding-right: var(--ms-space-sm);
}

/* =========================
   SMOOTH (future animation ready)
========================= */

.fluent-submenu {
    overflow: hidden;
}

/* =========================
   COLLAPSED: TITLE → SEPARATOR
========================= */

/* sembunyikan title */
.fluent-sidebar.is-collapsed .fluent-nav-title {
    display: none;
}

/* item yang berisi title → jadi separator */
.fluent-sidebar.is-collapsed .fluent-nav-item:has(.fluent-nav-title)::after {
    content: "";
    display: block;

    height: 1px;
    margin: var(--ms-space-sm) var(--ms-space-sm);

    background: var(--ms-color-border-subtle);
}

/* =========================
   TOOLTIP (COLLAPSED)
========================= */

.fluent-sidebar.is-collapsed .fluent-nav-link {
    position: relative;
}

/* tooltip content */
.fluent-sidebar.is-collapsed .fluent-nav-link::after {
    content: attr(data-title);

    position: absolute;
    left: calc(100% + 8px);
    top: 50%;
    transform: translateY(-50%);

    background: var(--ms-color-neutral-900);
    color: #fff;

    padding: 4px 8px;
    border-radius: var(--ms-radius-md);

    font-size: var(--ms-font-size-small);
    white-space: nowrap;

    opacity: 0;
    pointer-events: none;

    transition: opacity 0.15s var(--ms-ease);

    z-index: var(--ms-z-tooltip, 999);
}

/* show on hover */
.fluent-sidebar.is-collapsed .fluent-nav-link:hover::after {
    opacity: 1;
}

/* =========================
   LINK RESET (A TAG SUPPORT)
========================= */

/* semua link di nav */
.fluent-nav a {
    text-decoration: none;
    color: inherit;
}

/* jadikan <a> behave seperti div */
.fluent-nav-link {
    text-decoration: none;
    color: var(--ms-color-text-primary);
}

/* state default link */
.fluent-nav-link:link,
.fluent-nav-link:visited {
    color: var(--ms-color-text-primary);
    text-decoration: none;
}

/* hover tetap fluent */
.fluent-nav-link:hover {
    color: var(--ms-color-text-primary);
    text-decoration: none;
}

/* active (klik) */
.fluent-nav-link:active {
    color: var(--ms-color-text-primary);
    text-decoration: none;
}

/* focus (accessibility tetap jalan) */
.fluent-nav-link:focus-visible {
    text-decoration: none;
}