/* =========================
   FLUENT OFFCANVAS
========================= */

.fluent-offcanvas {
    position: fixed;
    inset: 0;
    z-index: var(--ms-z-modal);

    visibility: hidden;
    pointer-events: none;
}

/* OPEN STATE */
.fluent-offcanvas.open {
    visibility: visible;
    pointer-events: auto;
}

/* =========================
   OVERLAY
========================= */

.fluent-offcanvas__overlay {
    position: absolute;
    inset: 0;

    background: var(--ms-color-scrim);

    opacity: 0;

    transition: opacity var(--ms-motion-base) var(--ms-ease);
}

.fluent-offcanvas.open .fluent-offcanvas__overlay {
    opacity: 1;
}

/* =========================
   PANEL BASE
========================= */

.fluent-offcanvas__panel {
    position: absolute;

    background: var(--ms-color-bg-canvas);
    box-shadow: var(--ms-shadow-16);

    display: flex;
    flex-direction: column;

    /* 🔥 IMPORTANT: smooth animation */
    will-change: transform;
    transition: transform var(--ms-motion-base) var(--ms-ease-standard);
}

/* =========================
   POSITION
========================= */

/* RIGHT */
.fluent-offcanvas--right .fluent-offcanvas__panel {
    top: 0;
    right: 0;
    height: 100%;
    transform: translate3d(100%, 0, 0);
}

.fluent-offcanvas.open.fluent-offcanvas--right .fluent-offcanvas__panel {
    transform: translate3d(0, 0, 0);
}

/* LEFT */
.fluent-offcanvas--left .fluent-offcanvas__panel {
    top: 0;
    left: 0;
    height: 100%;
    transform: translate3d(-100%, 0, 0);
}

.fluent-offcanvas.open.fluent-offcanvas--left .fluent-offcanvas__panel {
    transform: translate3d(0, 0, 0);
}

/* TOP */
.fluent-offcanvas--top .fluent-offcanvas__panel {
    top: 0;
    left: 0;
    width: 100%;
    transform: translate3d(0, -100%, 0);
}

.fluent-offcanvas.open.fluent-offcanvas--top .fluent-offcanvas__panel {
    transform: translate3d(0, 0, 0);
}

/* BOTTOM */
.fluent-offcanvas--bottom .fluent-offcanvas__panel {
    bottom: 0;
    left: 0;
    width: 100%;
    transform: translate3d(0, 100%, 0);
}

.fluent-offcanvas.open.fluent-offcanvas--bottom .fluent-offcanvas__panel {
    transform: translate3d(0, 0, 0);
}

/* =========================
   SIZE
========================= */

.fluent-offcanvas--sm .fluent-offcanvas__panel {
    width: 280px;
}

.fluent-offcanvas--md .fluent-offcanvas__panel {
    width: 360px;
}

.fluent-offcanvas--lg .fluent-offcanvas__panel {
    width: 480px;
}

.fluent-offcanvas--full .fluent-offcanvas__panel {
    width: 100%;
}

/* =========================
   HEADER
========================= */

.fluent-offcanvas__header {
    display: flex;
    align-items: center;
    justify-content: space-between;

    padding: var(--ms-space-md);

    border-bottom: 1px solid var(--ms-color-border-subtle);
}

.fluent-offcanvas__title {
    font-size: var(--ms-font-size-h3);
    font-weight: var(--ms-font-weight-semi-bold);
    color: var(--ms-color-text-primary);
}

/* =========================
   BODY
========================= */

.fluent-offcanvas__body {
    flex: 1;
    overflow-y: auto;

    padding: var(--ms-space-md);
}

/* =========================
   OPTIONAL: SCROLL SMOOTH
========================= */

.fluent-offcanvas__body::-webkit-scrollbar {
    width: 6px;
}

.fluent-offcanvas__body::-webkit-scrollbar-thumb {
    background: var(--ms-color-neutral-400);
    border-radius: var(--ms-radius-pill);
}