/**
 * Shell aplikasi: sidebar, topbar, area konten.
 * Di bawah 900px sidebar berubah jadi drawer — sistem inventory tidak
 * punya navigasi mobile sama sekali, jadi bagian ini dirancang baru.
 */

/* `position: relative` menahan keturunan `position: absolute` di dalam shell,
   supaya dokumen tidak pernah lebih tinggi dari .app — sidebar sticky
   berhenti menempel begitu wadahnya habis. */
.app {
    position: relative;
    display: flex;
    min-height: 100vh;
}

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

.sidebar {
    position: sticky;
    top: 0;
    flex-shrink: 0;
    width: var(--sidebar-width);
    height: 100vh;
    display: flex;
    flex-direction: column;
    background: var(--sidebar-bg);
    border-right: 1px solid var(--sidebar-border);
    overflow: hidden;
    transition: width var(--duration-slow) var(--ease-out-expo);
}

.sidebar.is-collapsed {
    width: 0;
    border-right-width: 0;
}

.sidebar__inner {
    display: flex;
    flex-direction: column;
    width: var(--sidebar-width);
    height: 100%;
}

.sidebar__brand {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-6) var(--space-5) var(--space-5);
}

.sidebar__brand:hover {
    text-decoration: none;
}

.brand-mark {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    width: 2.5rem;
    height: 2.5rem;
    border-radius: var(--radius-lg);
    background-image: var(--brand-gradient);
    box-shadow: var(--shadow-glow);
    color: #ffffff;
}

.brand-mark--sm {
    width: 2.25rem;
    height: 2.25rem;
    border-radius: var(--radius-lg);
}

.sidebar__brand-text {
    min-width: 0;
}

.sidebar__brand-name {
    font-size: var(--text-md);
    font-weight: 800;
    color: var(--sidebar-fg-strong);
    line-height: 1.1;
}

.sidebar__brand-tag {
    margin-top: var(--space-1);
    font-size: var(--text-2xs);
    font-weight: 600;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--sidebar-fg);
    line-height: 1;
}

.sidebar__nav {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
    padding: var(--space-4) var(--space-3);
    overflow-y: auto;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    width: 100%;
    height: 2.75rem;
    padding-inline: var(--space-3);
    border: 1px solid transparent;
    border-radius: var(--radius-lg);
    font-size: var(--text-base);
    font-weight: 600;
    color: var(--sidebar-fg);
    text-align: left;
    transition: background-color var(--duration-base), color var(--duration-base),
        border-color var(--duration-base);
}

.nav-item:hover {
    background: var(--sidebar-hover);
    color: var(--sidebar-fg-strong);
    text-decoration: none;
}

.nav-item.is-active {
    background: rgba(59, 130, 246, 0.15);
    border-color: rgba(59, 130, 246, 0.2);
    color: var(--sidebar-fg-strong);
    box-shadow: var(--shadow-glow);
}

.nav-item.is-active .nav-item__icon,
.nav-group.is-open > .nav-item .nav-item__icon {
    color: var(--color-primary-400);
}

.nav-item__icon {
    flex-shrink: 0;
}

.nav-item__label {
    flex: 1;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.nav-item__chevron {
    flex-shrink: 0;
    transition: transform var(--duration-base);
}

.nav-group.is-open .nav-item__chevron {
    transform: rotate(180deg);
}

.nav-group__panel {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
    margin: var(--space-1) 0 0 var(--space-6);
}

.nav-group__panel[hidden] {
    display: none;
}

.nav-group__panel .nav-item {
    height: 2.25rem;
    padding-inline: var(--space-3);
    font-size: var(--text-sm);
    font-weight: 500;
    border-radius: var(--radius-md);
}

.sidebar__footer {
    padding: var(--space-3);
    border-top: 1px solid var(--sidebar-border);
}

.user-card {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-2);
    border-radius: var(--radius-lg);
    transition: background-color var(--duration-base);
}

.user-card:hover {
    background: var(--sidebar-hover);
}

.user-card__link {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    flex: 1;
    min-width: 0;
}

.user-card__link:hover {
    text-decoration: none;
}

/* accent-700, bukan 500: inisial putih di atas accent-500 hanya 2,49:1. */
.avatar {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    width: 2rem;
    height: 2rem;
    border-radius: var(--radius-full);
    background: var(--color-accent-700);
    color: #ffffff;
    font-size: var(--text-xs);
    font-weight: 700;
}

.user-card__meta {
    min-width: 0;
    flex: 1;
}

.user-card__name {
    font-size: var(--text-base);
    font-weight: 700;
    color: var(--sidebar-fg-strong);
    line-height: 1.2;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.user-card__role {
    font-size: var(--text-xs);
    color: var(--sidebar-fg);
    line-height: 1.2;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.user-card__logout {
    color: var(--sidebar-fg);
}

.user-card__logout:hover {
    background: rgba(244, 63, 94, 0.12);
    color: #fda4af;
}

/* ============================================================ Topbar */

.main-column {
    display: flex;
    flex-direction: column;
    flex: 1;
    min-width: 0;
}

.topbar {
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-4);
    height: var(--topbar-height);
    padding-inline: var(--space-6);
    background: var(--surface-glass);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-glass);
    box-shadow: var(--shadow-glass);
}

.topbar__left,
.topbar__right {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    min-width: 0;
}

.topbar__title {
    font-size: var(--text-lg);
    font-weight: 700;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.topbar__brand-mark {
    display: none;
}

.topbar__search {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    height: 2.5rem;
    padding-inline: var(--space-3);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    background: var(--surface-card);
    color: var(--text-muted);
    font-size: var(--text-xs);
    font-weight: 600;
    transition: box-shadow var(--duration-base), border-color var(--duration-base);
}

.topbar__search:hover {
    box-shadow: var(--shadow-lift);
    border-color: var(--color-primary-300);
}

.kbd {
    padding: 2px var(--space-1);
    border-radius: var(--radius-sm);
    background: var(--color-ink-100);
    font-size: var(--text-2xs);
    font-weight: 700;
    color: var(--color-ink-600);
}

.dark .kbd {
    background: var(--color-ink-800);
    color: var(--color-ink-200);
}

.topbar__action {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.5rem;
    height: 2.5rem;
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    background: var(--surface-card);
    color: var(--text-muted);
    transition: box-shadow var(--duration-base), color var(--duration-base);
}

.topbar__action:hover {
    box-shadow: var(--shadow-lift);
    color: var(--color-primary-600);
}

.dark .topbar__action:hover {
    color: var(--color-primary-300);
}

/* ============================================================ Konten */

.content {
    flex: 1;
    padding: var(--space-8) var(--space-6);
    animation: fade-in var(--duration-base) ease-out both;
}

.content__inner {
    max-width: 1280px;
    margin: 0 auto;
}

.content__inner--narrow {
    max-width: 960px;
}

/* ============================================================ Drawer backdrop */

.drawer-backdrop {
    position: fixed;
    inset: 0;
    z-index: calc(var(--z-drawer) - 1);
    background: rgba(6, 10, 21, 0.5);
    backdrop-filter: blur(2px);
    animation: fade-in var(--duration-base) ease-out both;
}

.drawer-backdrop[hidden] {
    display: none;
}

/* ============================================================ Responsif */

@media (max-width: 1100px) {
    .content {
        padding: var(--space-6) var(--space-5);
    }
}

@media (max-width: 900px) {
    .sidebar {
        position: fixed;
        top: 0;
        left: 0;
        z-index: var(--z-drawer);
        transform: translateX(-100%);
        transition: transform var(--duration-slow) var(--ease-out-expo);
        box-shadow: var(--shadow-float);
    }

    /* Di mode drawer, lebar tidak lagi dipakai untuk menyembunyikan. */
    .sidebar.is-collapsed {
        width: var(--sidebar-width);
        border-right-width: 1px;
    }

    .sidebar.is-open {
        transform: translateX(0);
    }

    .topbar {
        padding-inline: var(--space-4);
    }

    .topbar__brand-mark {
        display: flex;
    }

    .topbar__search span {
        display: none;
    }

    .content {
        padding: var(--space-5) var(--space-4);
    }
}

@media (min-width: 901px) {
    .drawer-backdrop {
        display: none;
    }
}

@media (max-width: 560px) {
    .topbar__search {
        display: none;
    }

    .toast-host {
        right: var(--space-4);
        bottom: var(--space-4);
        left: var(--space-4);
        width: auto;
    }

    .section__title {
        font-size: var(--text-xl);
    }
}