/* The application frame: sidebar, main sheet, page scaffolding. Views never restyle these. */

.shell {
    display: grid;
    grid-template-columns: var(--sidebar-width) minmax(0, 1fr);
    height: 100dvh;
    background: var(--canvas);
    transition: grid-template-columns var(--duration-normal) var(--ease-in-out);
}

:root[data-sidebar="collapsed"] .shell {
    grid-template-columns: var(--sidebar-width-collapsed) minmax(0, 1fr);
}

.shell[data-layout="auth"] {
    grid-template-columns: minmax(0, 1fr);
}

.shell[data-layout="auth"] .sidebar,
.shell[data-layout="auth"] .skip-link {
    display: none;
}

.no-transitions *,
.theme-switching * {
    transition: none !important;
}

.skip-link {
    position: absolute;
    left: var(--space-3);
    top: -4rem;
    z-index: var(--z-toast);
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-md);
    background: var(--ink);
    color: var(--on-ink);
}

.skip-link:focus {
    top: var(--space-3);
}

/* ── Sidebar ─────────────────────────────────────────────────────────────── */

.sidebar {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    min-width: 0;
    padding: var(--space-3) var(--space-2) var(--space-2) var(--space-3);
    overflow: hidden;
}

.sidebar__top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 2rem;
    padding-left: var(--space-2);
}

.sidebar__brand {
    display: inline-flex;
    border-radius: var(--radius-sm);
    color: var(--text);
}

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

.brand {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    white-space: nowrap;
}

.brand__name {
    font-size: 0.9375rem;
    font-weight: 650;
    letter-spacing: -0.02em;
}

.brand__dot {
    color: var(--accent);
}

.brand-mark {
    flex: none;
}

.brand-mark__tile {
    fill: var(--text);
}

.brand-mark__tile--accent {
    fill: var(--accent);
}

.brand-mark__tile--soft {
    fill: var(--text);
    opacity: 0.28;
}

.sidebar__search {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    height: var(--control-height);
    padding: 0 var(--space-2) 0 0.625rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: var(--surface);
    color: var(--text-muted);
    text-align: left;
    box-shadow: var(--shadow-xs);
    transition:
        border-color var(--duration-fast),
        color var(--duration-fast);
}

.sidebar__search:hover {
    border-color: var(--border-strong);
    color: var(--text-secondary);
}

.sidebar__search-label {
    flex: 1;
}

.sidebar__nav {
    position: relative;
    display: flex;
    flex: 1;
    flex-direction: column;
    gap: var(--space-5);
    min-height: 0;
    margin: 0 calc(var(--space-2) * -1) 0 calc(var(--space-3) * -1);
    padding: 0 var(--space-2) 0 var(--space-3);
    overflow: hidden auto;
}

.sidebar__heading {
    display: flex;
    align-items: center;
    height: 1.5rem;
    margin-bottom: var(--space-1);
    padding: 0 0.625rem;
    color: var(--text-muted);
    font-size: var(--text-xs);
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    white-space: nowrap;
}

.nav {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.nav__link {
    position: relative;
    z-index: 1;
    display: flex;
    align-items: center;
    gap: 0.625rem;
    height: 2rem;
    padding: 0 0.625rem;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-weight: 500;
    white-space: nowrap;
    transition:
        color var(--duration-fast),
        background-color var(--duration-fast);
}

.nav__link .icon {
    flex: none;
    color: var(--text-muted);
    transition: color var(--duration-fast);
}

.nav__link:hover {
    background: var(--surface-hover);
    color: var(--text);
    text-decoration: none;
}

.nav__link[aria-current="page"] {
    background: transparent;
    color: var(--text);
}

.nav__link[aria-current="page"] .icon {
    color: var(--accent-text);
}

.nav__indicator {
    position: absolute;
    top: 0;
    right: var(--space-2);
    left: var(--space-3);
    z-index: 0;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: var(--surface);
    box-shadow: var(--shadow-xs);
    transition:
        transform var(--duration-slow) var(--ease-spring),
        height var(--duration-normal) var(--ease-out);
    pointer-events: none;
}

.sidebar__bottom {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.sidebar__user {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    width: 100%;
    padding: 0.375rem;
    border: 0;
    border-radius: var(--radius-md);
    background: transparent;
    text-align: left;
    transition: background-color var(--duration-fast);
}

.sidebar__user:hover,
.sidebar__user[aria-expanded="true"] {
    background: var(--surface-hover);
}

.sidebar__user-avatar {
    display: inline-flex;
    flex: none;
}

.sidebar__user-text {
    display: flex;
    flex: 1;
    flex-direction: column;
    min-width: 0;
    line-height: 1.3;
}

.sidebar__user-name {
    font-weight: 550;
}

.sidebar__user-role {
    color: var(--text-muted);
    font-size: var(--text-sm);
}

.sidebar__user-caret {
    flex: none;
    color: var(--text-muted);
}

/* Collapsed: icons only. Labels fade out instead of wrapping while the width animates. */
.nav__label,
.sidebar__search-label,
.sidebar__search .kbd,
.sidebar__user-text,
.sidebar__user-caret,
.brand__name,
.sidebar__heading span {
    transition: opacity var(--duration-fast);
}

:root[data-sidebar="collapsed"] .sidebar {
    padding-right: var(--space-2);
    padding-left: var(--space-2);
}

:root[data-sidebar="collapsed"] .sidebar__nav {
    margin: 0 calc(var(--space-2) * -1);
    padding: 0 var(--space-2);
}

:root[data-sidebar="collapsed"] .nav__indicator {
    right: var(--space-2);
    left: var(--space-2);
}

:root[data-sidebar="collapsed"] :is(.nav__label, .sidebar__search-label, .sidebar__search .kbd, .sidebar__user-text, .sidebar__user-caret, .brand__name) {
    display: none;
}

:root[data-sidebar="collapsed"] .sidebar__top {
    flex-direction: column;
    gap: var(--space-2);
    height: auto;
    padding-left: 0;
}

:root[data-sidebar="collapsed"] .sidebar__brand {
    padding: 0.3125rem;
}

:root[data-sidebar="collapsed"] :is(.nav__link, .sidebar__search, .sidebar__user) {
    justify-content: center;
    padding-right: 0;
    padding-left: 0;
}

:root[data-sidebar="collapsed"] .sidebar__heading {
    justify-content: center;
    padding: 0;
}

:root[data-sidebar="collapsed"] .sidebar__heading span {
    display: none;
}

:root[data-sidebar="collapsed"] .sidebar__heading::before {
    width: 1rem;
    height: 1px;
    background: var(--border-strong);
    content: "";
}

/* ── Main sheet ──────────────────────────────────────────────────────────── */

.main {
    position: relative;
    min-width: 0;
    margin: var(--space-2) var(--space-2) var(--space-2) 0;
    overflow: hidden auto;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    background: var(--surface);
    box-shadow: var(--shadow-xs);
    scrollbar-gutter: stable;
}

.main:focus {
    outline: none;
}

.shell[data-layout="auth"] .main {
    margin: 0;
    border: 0;
    border-radius: 0;
    background: var(--canvas);
    box-shadow: none;
    scrollbar-gutter: auto;
}

/* Full-bleed: the view fills the sheet and manages its own panes and scrolling. */
.shell[data-layout="full"] .main {
    display: flex;
    flex-direction: column;
    overflow: hidden;
    scrollbar-gutter: auto;
}

.shell[data-layout="full"] .view {
    display: flex;
    flex: 1;
    flex-direction: column;
    min-height: 0;
}

.view {
    min-height: 100%;
    animation: rise-in var(--duration-slow) var(--ease-out) both;
}

.shell[data-layout="auth"] .view {
    animation-name: fade-in;
}

.full-placeholder {
    flex: 1;
    overflow: auto;
}

/* ── Page scaffolding ────────────────────────────────────────────────────── */

.page {
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
    width: 100%;
    max-width: var(--page-max-width);
    margin: 0 auto;
    padding: var(--space-8) var(--space-10) var(--space-16);
}

.page--narrow {
    max-width: 44rem;
}

.page--wide {
    max-width: 100rem;
}

.page--full {
    max-width: none;
}

.page__header {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-end;
    justify-content: space-between;
    gap: var(--space-4);
}

.page__heading {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
    min-width: 0;
}

.page__back {
    display: inline-flex;
    align-items: center;
    align-self: flex-start;
    gap: var(--space-1);
    margin-bottom: var(--space-1);
    color: var(--text-muted);
    font-size: var(--text-sm);
    font-weight: 500;
}

.page__back:hover {
    color: var(--text);
    text-decoration: none;
}

.page__back .icon {
    transition: transform var(--duration-fast) var(--ease-out);
}

.page__back:hover .icon {
    transform: translateX(-2px);
}

.page__title-row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--space-3);
}

.page__title {
    font-size: var(--text-2xl);
    font-weight: 650;
    letter-spacing: -0.022em;
}

.page__meta {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.page__meta:empty {
    display: none;
}

.page__subtitle {
    max-width: 60ch;
    color: var(--text-muted);
    font-size: var(--text-md);
}

.page__actions {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.page__actions:empty {
    display: none;
}

.page__body {
    display: flex;
    flex-direction: column;
    gap: var(--space-5);
    min-width: 0;
}

/* ── Boot splash ─────────────────────────────────────────────────────────── */

.boot {
    position: fixed;
    inset: 0;
    z-index: 100;
    display: grid;
    place-items: center;
    background: var(--canvas);
    transition: opacity var(--duration-normal);
}

.boot.is-leaving {
    opacity: 0;
    pointer-events: none;
}

.boot__mark {
    display: grid;
    grid-template-columns: repeat(2, 0.875rem);
    gap: 0.25rem;
}

.boot__mark span {
    width: 0.875rem;
    height: 0.875rem;
    border-radius: 3px;
    background: var(--text);
    animation: boot-pulse 1.1s var(--ease-in-out) infinite;
}

.boot__mark span:nth-child(2) {
    background: var(--accent);
    animation-delay: 0.14s;
}

.boot__mark span:nth-child(3) {
    opacity: 0.3;
    animation-delay: 0.42s;
}

.boot__mark span:nth-child(4) {
    animation-delay: 0.28s;
}

@keyframes boot-pulse {
    0%,
    100% {
        transform: scale(1);
    }

    50% {
        transform: scale(0.72);
    }
}

@media (max-width: 760px) {
    .page {
        padding: var(--space-5) var(--space-4) var(--space-12);
    }

    .main {
        margin: var(--space-1) var(--space-1) var(--space-1) 0;
    }
}