/* Shell layout modelled on Paces (docs/adr/U-03): fixed dark sidebar, sticky top bar, content, footer. */

html {
    --app-sidenav-current: var(--app-sidenav-width);
}

body {
    font-family: var(--app-font);
    font-size: var(--app-font-size);
    background: var(--app-body-bg);
    color: var(--app-body-color);
    -webkit-font-smoothing: antialiased;
}

.icon {
    width: 1.125rem;
    height: 1.125rem;
    flex-shrink: 0;
    vertical-align: -0.2em;
}

/* ---- Sidebar ---- */
.sidenav {
    position: fixed;
    inset: 0 auto 0 0;
    z-index: 1005;
    width: var(--app-sidenav-current);
    display: flex;
    flex-direction: column;
    background: var(--app-sidenav-bg);
    border-right: 1px solid var(--app-sidenav-border);
    box-shadow: 0 1px 2px rgba(var(--bs-body-color-rgb), 0.15);
    transition: width var(--app-transition), transform var(--app-transition);
}

.sidenav-brand {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    height: var(--app-topbar-height);
    flex-shrink: 0;
    padding: 0 1.4rem;
    color: #ffffff;
    font-size: 1.125rem;
    font-weight: 700;
    letter-spacing: 0.01em;
    text-decoration: none;
    white-space: nowrap;
    overflow: hidden;
}

.sidenav-brand:hover {
    color: #ffffff;
}

.logo {
    width: 1.75rem;
    height: 1.75rem;
    flex-shrink: 0;
}

.sidenav-menu {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 5px;
    padding: 0 10px 50px;
    overflow-x: hidden;
    overflow-y: auto;
    scrollbar-width: thin;
    scrollbar-color: rgba(162, 173, 183, 0.5) transparent;
}

.sidenav-title {
    padding: 10px 10px 2px;
    margin-top: 10px;
    color: var(--app-sidenav-color);
    font-size: 0.6125rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    white-space: nowrap;
}

.sidenav-link {
    position: relative;
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px;
    border-radius: 5px;
    color: var(--app-sidenav-color);
    font-size: 0.875rem;
    font-weight: 500;
    line-height: 1.25;
    text-decoration: none;
    white-space: nowrap;
    transition: color var(--app-transition), background-color var(--app-transition);
}

.sidenav-link:hover,
.sidenav-link:focus-visible {
    color: var(--app-sidenav-hover);
}

.sidenav-link.active {
    color: var(--app-sidenav-active);
    background: var(--app-sidenav-active-bg);
}

.sidenav-icon {
    width: 1.125rem;
    height: 1.125rem;
}

.sidenav-text {
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Icon rail ("condensed"): icons only, the label flies out on hover */
@media (min-width: 992px) {
    html[data-sidenav="condensed"] {
        --app-sidenav-current: var(--app-sidenav-width-condensed);
    }

    html[data-sidenav="condensed"] .sidenav-menu {
        overflow: visible;
    }

    html[data-sidenav="condensed"] .sidenav-brand {
        justify-content: center;
        padding: 0;
    }

    html[data-sidenav="condensed"] .sidenav-brand-text,
    html[data-sidenav="condensed"] .sidenav-title {
        display: none;
    }

    html[data-sidenav="condensed"] .sidenav-link {
        justify-content: center;
        padding: 12px 0;
    }

    html[data-sidenav="condensed"] .sidenav-icon {
        width: 1.4rem;
        height: 1.4rem;
    }

    html[data-sidenav="condensed"] .sidenav-text {
        position: absolute;
        left: calc(100% + 6px);
        top: 50%;
        transform: translateY(-50%);
        display: none;
        padding: 0.45rem 0.85rem;
        border-radius: var(--app-radius);
        background: var(--app-sidenav-bg);
        color: var(--app-sidenav-hover);
        box-shadow: var(--app-shadow-lg);
        z-index: 1046;
    }

    html[data-sidenav="condensed"] .sidenav-link:hover .sidenav-text,
    html[data-sidenav="condensed"] .sidenav-link:focus-visible .sidenav-text {
        display: block;
    }
}

/* Phones and tablets: the sidebar slides in over the content */
.sidenav-backdrop {
    display: none;
}

@media (max-width: 991.98px) {
    html {
        --app-sidenav-current: 0px;
    }

    .sidenav {
        width: var(--app-sidenav-width);
        transform: translateX(-100%);
        z-index: 1055;
    }

    html.sidenav-open .sidenav {
        transform: none;
    }

    html.sidenav-open .sidenav-backdrop {
        display: block;
        position: fixed;
        inset: 0;
        z-index: 1050;
        background: rgba(49, 58, 70, 0.6);
        backdrop-filter: blur(2px);
    }

    html.sidenav-open body {
        overflow: hidden;
    }
}

/* ---- Content column ---- */
.app-content {
    min-height: 100vh;
    margin-left: var(--app-sidenav-current);
    display: flex;
    flex-direction: column;
    transition: margin-left var(--app-transition);
}

.page-content {
    flex: 1;
    width: 100%;
    padding: 0 var(--app-gutter) var(--app-gutter);
}

/* ---- Top bar ---- */
.topbar {
    position: sticky;
    top: 0;
    z-index: 1001;
    display: flex;
    align-items: center;
    gap: 10px;
    height: var(--app-topbar-height);
    padding: 0 var(--app-gutter);
    background: var(--app-topbar-bg);
    box-shadow: var(--app-shadow);
}

.topbar-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.35rem;
    height: 2.35rem;
    padding: 0;
    border: 0;
    border-radius: 50%;
    background: transparent;
    color: var(--app-topbar-item);
    cursor: pointer;
    list-style: none;
    transition: color var(--app-transition), background-color var(--app-transition);
}

.topbar-button::-webkit-details-marker {
    display: none;
}

.topbar-button .icon {
    width: 1.375rem;
    height: 1.375rem;
}

.topbar-button:hover,
.topbar-button:focus-visible {
    color: var(--app-topbar-item-hover);
}

/* The menu toggle is the round primary button of Paces */
.topbar > .topbar-button:first-child {
    background: var(--app-primary);
    color: #ffffff;
}

.topbar > .topbar-button:first-child .icon {
    width: 1.125rem;
    height: 1.125rem;
}

.topbar > .topbar-button:first-child:hover {
    background: var(--app-primary-hover);
    color: #ffffff;
}

.topbar-search {
    position: relative;
    width: min(18rem, 40vw);
    margin-left: 0.5rem;
}

.topbar-search .form-control {
    height: 2.35rem;
    padding-left: 2.5rem;
    padding-right: 2rem;
    border-radius: 2rem;
    background: var(--app-topbar-search-bg);
    border-color: var(--app-topbar-search-border);
}

.topbar-search-icon {
    position: absolute;
    left: 0.85rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--app-muted);
    pointer-events: none;
}

.topbar-search-key {
    position: absolute;
    right: 0.75rem;
    top: 50%;
    transform: translateY(-50%);
    padding: 0.05rem 0.4rem;
    border: 1px solid var(--app-border);
    border-radius: var(--app-radius-sm);
    background: transparent;
    color: var(--app-muted);
    font-size: 0.75rem;
    pointer-events: none;
}

.topbar-search .form-control:focus ~ .topbar-search-key {
    display: none;
}

.topbar-actions {
    display: flex;
    align-items: center;
    gap: 4px;
    margin-left: auto;
}

/* Only the matching icon of the light/dark switch shows */
:root[data-bs-theme="light"] .show-dark,
:root[data-bs-theme="dark"] .show-light {
    display: none;
}

.topbar-user {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    height: var(--app-topbar-height);
    padding-left: 0.85rem;
    margin-left: 0.4rem;
    border-left: 1px solid rgba(var(--bs-body-color-rgb), 0.12);
    color: var(--app-topbar-item);
    cursor: pointer;
    list-style: none;
}

.topbar-user::-webkit-details-marker {
    display: none;
}

.topbar-user:hover {
    color: var(--app-topbar-item-hover);
}

.topbar-user-name {
    color: var(--app-heading-color);
    font-weight: 600;
    font-size: 0.8125rem;
}

.topbar-user-caret {
    width: 0.9rem;
    height: 0.9rem;
}

.avatar {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2rem;
    height: 2rem;
    border-radius: 50%;
    background: var(--app-primary-subtle);
    color: var(--app-primary-text);
    font-size: 0.75rem;
    font-weight: 700;
}

@media (max-width: 767.98px) {
    .topbar-search,
    .topbar-user-name {
        display: none;
    }
}

/* ---- Dropdowns (<details class="shell-dropdown">), usable without script ---- */
.shell-dropdown {
    position: relative;
}

.shell-dropdown-menu {
    position: absolute;
    top: calc(100% + 0.35rem);
    right: 0;
    z-index: 1010;
    min-width: 12rem;
    padding: 0.25rem;
    border: 1px solid var(--app-border);
    border-radius: var(--app-radius);
    background: var(--app-card-bg);
    box-shadow: var(--app-shadow-lg);
    animation: shell-slide-up 0.3s ease;
}

.shell-dropdown > .topbar-user + .shell-dropdown-menu {
    top: calc(100% - 0.5rem);
}

.shell-dropdown-header {
    padding: 0.5rem 0.9rem 0.35rem;
    color: var(--app-muted);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.shell-dropdown-item {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    width: 100%;
    padding: 0.45rem 0.9rem;
    border: 0;
    border-radius: var(--app-radius-sm);
    background: transparent;
    color: var(--app-body-color);
    font: inherit;
    text-align: left;
    text-decoration: none;
    cursor: pointer;
}

.shell-dropdown-item:hover,
.shell-dropdown-item:focus-visible {
    background: var(--app-hover-bg);
    color: var(--app-heading-color);
}

.shell-dropdown-item[aria-current="true"] {
    color: var(--app-primary);
    font-weight: 600;
}

.shell-dropdown-item .icon {
    width: 1rem;
    height: 1rem;
    color: var(--app-muted);
}

.shell-dropdown form {
    margin: 0;
}

@keyframes shell-slide-up {
    from { transform: translateY(3px); opacity: 0; }
    to { transform: none; opacity: 1; }
}

/* ---- Footer ---- */
.footer {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    padding: 0.65rem var(--app-gutter);
    border-top: 1px solid var(--app-border);
    background: var(--app-card-bg);
    color: var(--app-muted);
    font-size: 0.8125rem;
}

/* ---- Test system banner (SystemBanner.razor) ---- */
.system-banner {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.375rem var(--app-gutter);
    background: var(--app-warning-subtle);
    color: var(--app-warning-text);
    font-size: 0.8125rem;
    font-weight: 600;
    text-align: center;
}

.auth-page .system-banner {
    border-radius: var(--app-radius);
}

/* ---- Blazor error bar ---- */
#blazor-error-ui {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 2000;
    display: none;
    padding: 0.75rem 1.25rem;
    background: var(--app-warning-subtle);
    color: var(--app-warning-text);
    box-shadow: var(--app-shadow-lg);
}

#blazor-error-ui .dismiss {
    position: absolute;
    right: 1rem;
    cursor: pointer;
}

@media (prefers-reduced-motion: reduce) {
    .sidenav,
    .app-content,
    .shell-dropdown-menu {
        transition: none;
        animation: none;
    }
}