/*
 * shell.css — Biosis app shell layout.
 *
 * Adapted from VA1 layout.css (which uses the same --va-* token system).
 * Grid: sidebar | topbar / content.  Mobile: topbar / content stacked.
 */

/* ── App shell grid ─────────────────────────────────────────────────── */

.app-shell {
    display: grid;
    grid-template-columns: var(--va-sidebar-expanded, 240px) 1fr;
    grid-template-rows: var(--va-header-height, 56px) 1fr;
    grid-template-areas:
        "sidebar topbar"
        "sidebar content";
    height: 100dvh;
    background-color: var(--va-bg);
    color: var(--va-text);
    overflow: hidden;
}

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

.app-sidebar {
    grid-area: sidebar;
    display: flex;
    flex-direction: column;
    height: 100%;
    background-color: var(--va-sidebar);
    border-inline-end: 1px solid var(--va-border);
    position: relative;
    z-index: 2;
    overflow: hidden;
}

/* Brand row */
.sidebar-brand {
    height: var(--va-header-height, 56px);
    flex-shrink: 0;
    display: flex;
    align-items: center;
    gap: 0.625rem;
    padding-inline: 1.25rem;
    color: var(--va-accent);
    text-decoration: none;
    border-block-end: 1px solid var(--va-border);
    filter: drop-shadow(0 2px 8px color-mix(in oklab, var(--va-accent) 20%, transparent));
    transition: filter 150ms ease;
}
.sidebar-brand:hover {
    text-decoration: none;
    filter: drop-shadow(0 4px 14px color-mix(in oklab, var(--va-accent) 35%, transparent));
}

.sidebar-brand__text {
    font-family: var(--va-font-heading);
    font-weight: 700;
    font-size: 1rem;
    letter-spacing: -0.01em;
    color: var(--va-text);
    white-space: nowrap;
}

/* Nav region */
.sidebar-nav {
    flex: 1 1 auto;
    overflow-y: auto;
    overflow-x: hidden;
    padding: 0.75rem 0.5rem;
    display: flex;
    flex-direction: column;
    gap: 2px;
    scrollbar-width: thin;
    scrollbar-color: var(--va-border) transparent;
}
.sidebar-nav::-webkit-scrollbar { width: 4px; }
.sidebar-nav::-webkit-scrollbar-thumb { background: var(--va-border); border-radius: 999px; }

/* Nav items — NavLink renders <a> so target both */
.nav-item, a.nav-item:link, a.nav-item:visited {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    height: 44px;
    padding-inline: 0.75rem;
    border-radius: var(--va-radius-lg);
    background-color: transparent;
    border: 0;
    color: var(--va-text-dim);
    font-size: 0.875rem;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    white-space: nowrap;
    transition: background-color 140ms ease, color 140ms ease;
}

.nav-item:hover {
    background-color: color-mix(in oklab, var(--va-accent) 8%, transparent);
    color: var(--va-text);
    text-decoration: none;
}

.nav-item.active, .nav-item--active {
    background-color: color-mix(in oklab, var(--va-accent) 14%, transparent);
    color: var(--va-accent);
}
.nav-item.active:hover, .nav-item--active:hover {
    background-color: color-mix(in oklab, var(--va-accent) 18%, transparent);
}

.nav-item:focus-visible {
    outline: 2px solid var(--va-accent);
    outline-offset: 2px;
}

/* Nav icon chip — 30×30 tile */
.nav-item__icon {
    width: 30px;
    height: 30px;
    flex-shrink: 0;
    border-radius: var(--va-radius);
    background-color: var(--va-elevated);
    color: var(--va-text-dim);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;   /* Material Symbols */
    transition: background-color 120ms ease, color 120ms ease;
}

.nav-item:hover .nav-item__icon {
    background-color: color-mix(in oklab, var(--va-accent) 10%, var(--va-elevated));
    color: var(--va-text);
}

.nav-item.active .nav-item__icon,
.nav-item--active .nav-item__icon {
    background-color: color-mix(in oklab, var(--va-accent) 24%, transparent);
    color: var(--va-accent);
}

/* ── Top bar ────────────────────────────────────────────────────────── */

.app-topbar {
    grid-area: topbar;
    display: flex;
    align-items: center;
    gap: 1rem;
    height: var(--va-header-height, 56px);
    padding-inline: 1.25rem;
    background-color: var(--va-bg);
    border-block-end: 1px solid var(--va-border);
    position: relative;
}

.topbar__title {
    flex: 1 1 auto;
    font-family: var(--va-font-heading);
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--va-text);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.topbar__actions {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    flex-shrink: 0;
}

/* User avatar placeholder */
.topbar__avatar {
    width: 32px;
    height: 32px;
    border-radius: 999px;
    background-color: color-mix(in oklab, var(--va-accent) 22%, var(--va-elevated));
    color: var(--va-accent);
    font-size: 0.75rem;
    font-weight: 700;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: default;
    user-select: none;
    border: 2px solid var(--va-border-light);
}

/* ── Theme toggle button ────────────────────────────────────────────── */

.biosis-theme-toggle {
    width: 36px;
    height: 36px;
    border-radius: var(--va-radius);
    background-color: var(--va-elevated);
    border: 1px solid var(--va-border);
    color: var(--va-text-dim);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 1.1rem;
    transition: background-color 140ms ease, border-color 140ms ease, color 140ms ease;
}
.biosis-theme-toggle:hover {
    background-color: color-mix(in oklab, var(--va-accent) 10%, var(--va-elevated));
    border-color: color-mix(in oklab, var(--va-accent) 30%, var(--va-border));
    color: var(--va-accent);
}
.biosis-theme-toggle:focus-visible {
    outline: 2px solid var(--va-accent);
    outline-offset: 2px;
}

/* ── Content area ───────────────────────────────────────────────────── */

.app-content {
    grid-area: content;
    min-height: 0;
    overflow-y: auto;
    overflow-x: hidden;
    padding: var(--va-sp-6);
    background:
        radial-gradient(ellipse 700px 350px at 80% -10%,
            color-mix(in oklab, var(--va-accent) 5%, transparent), transparent 60%),
        var(--va-bg);
}

/* ── Mobile breakpoint ─────────────────────────────────────────────── */

@media (max-width: 767px) {
    .app-shell {
        grid-template-columns: 1fr;
        grid-template-rows: var(--va-header-height, 56px) 1fr;
        grid-template-areas:
            "topbar"
            "content";
    }

    .app-sidebar {
        display: none;
    }
}

/* ── Kenar menüsü: desktop daraltma + mobil çekmece (js/shell.js + biosis_nav çerezi) ── */

/* Daraltma düğmesi: menünün altında, ayırıcıyla */
.sidebar-collapse {
    margin-top: auto;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    height: 44px;
    padding-inline: 0.75rem;
    margin-inline: 0.75rem;
    margin-block-end: 0.75rem;
    border: 0;
    border-top: 1px solid var(--va-border);
    background: transparent;
    color: var(--va-text-muted);
    font-size: 0.8125rem;
    font-weight: 500;
    cursor: pointer;
    white-space: nowrap;
    transition: color 140ms ease;
}
.sidebar-collapse:hover { color: var(--va-text); }
.sidebar-collapse .material-symbols-outlined {
    font-size: 20px;
    transition: transform 200ms ease;
}

/* Desktop daraltılmış: 64px ikon modu — metinler gizli, ikonlar ortalı, ok ters döner */
html.nav-collapsed .app-shell {
    grid-template-columns: var(--va-sidebar-collapsed, 64px) 1fr;
}
html.nav-collapsed .sidebar-brand { justify-content: center; padding-inline: 0; }
html.nav-collapsed .sidebar-brand__text { display: none; }
html.nav-collapsed .sidebar-nav .nav-item {
    font-size: 0;              /* serbest metin düğümü ikonun yanında — sarmalayıcı olmadan gizlemenin tek yolu */
    gap: 0;
    justify-content: center;
    padding-inline: 0;
}
html.nav-collapsed .sidebar-collapse { justify-content: center; padding-inline: 0; }
html.nav-collapsed .sidebar-collapse__text { display: none; }
html.nav-collapsed .sidebar-collapse .material-symbols-outlined { transform: rotate(180deg); }

/* Hamburger (topbar): yalnız dar ekranda görünür */
.topbar__menu {
    display: none;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border: 0;
    border-radius: var(--va-radius);
    background: transparent;
    color: var(--va-text);
    cursor: pointer;
}
.topbar__menu:hover { background: var(--va-elevated); }

/* Çekmece karartısı */
.app-nav-backdrop {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.55);
    z-index: 40;
}

@media (max-width: 767px) {
    .topbar__menu { display: inline-flex; }

    /* Sidebar artık yok olmuyor: soldan kayan çekmece */
    .app-sidebar {
        display: flex;
        position: fixed;
        inset-block: 0;
        inset-inline-start: 0;
        width: min(300px, 84vw);
        z-index: 50;
        transform: translateX(-100%);
        transition: transform 220ms ease;
        box-shadow: var(--va-shadow-lg);
    }
    html.nav-open .app-sidebar { transform: none; }
    html.nav-open .app-nav-backdrop { display: block; }

    /* Mobilde daraltma anlamsız: çekmece hep tam genişlik; daraltılmış çerez etkisiz */
    html.nav-collapsed .app-sidebar { width: min(300px, 84vw); }
    html.nav-collapsed .sidebar-brand__text,
    html.nav-collapsed .sidebar-collapse__text { display: inline; }
    html.nav-collapsed .sidebar-nav .nav-item { font-size: 0.875rem; gap: 0.75rem; justify-content: flex-start; padding-inline: 0.75rem; }
    html.nav-collapsed .sidebar-brand { justify-content: flex-start; padding-inline: 1.25rem; }
    .sidebar-collapse { display: none; }  /* daraltma düğmesi mobilde gizli */
}