/* ==========================================================================
   Yerleşim: public header/footer, yönetim paneli shell'i (sidebar + header),
   sayfa başlığı bileşeni.
   ========================================================================== */

/* --------------------------------------------------------------------------
   Erişilebilirlik: içeriğe geç bağlantısı
   -------------------------------------------------------------------------- */
.skip-link {
    position: absolute;
    top: -100px;
    left: var(--space-4);
    z-index: 2000;
    padding: var(--space-2) var(--space-4);
    color: var(--text-on-primary);
    background: var(--primary);
    border-radius: var(--radius-md);
    font-weight: var(--weight-medium);
    transition: top var(--duration-fast) var(--ease-standard);
}

.skip-link:focus {
    top: var(--space-3);
    color: var(--text-on-primary);
    text-decoration: none;
}

main:focus {
    outline: none;
}

/* Layout'un kendi ikonları (hamburger, kapat, ok) Font Awesome'a bağlı olmadan satır içi SVG'dir */
.ui-icon {
    display: inline-block;
    flex-shrink: 0;
    vertical-align: middle;
}

/* Font Awesome kit'i ikonları <svg> ile değiştirebilir; ikonlar bu kapsayıcıyla hizalanır */
.nav-icon {
    display: inline-flex;
    flex: 0 0 20px;
    align-items: center;
    justify-content: center;
    width: 20px;
    font-size: 15px;
    line-height: 1;
}

/* --------------------------------------------------------------------------
   Public site header
   -------------------------------------------------------------------------- */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1020;
    background: rgba(255, 255, 255, .92);
    border-bottom: 1px solid var(--border);
    backdrop-filter: saturate(180%) blur(8px);
}

.site-navbar {
    min-height: var(--header-height);
    padding: var(--space-2) 0;
}

.site-brand {
    display: inline-flex;
    align-items: center;
    gap: var(--space-3);
    margin-right: var(--space-6);
    padding: 0;
    color: var(--text-primary);
    font-size: var(--text-md);
    font-weight: var(--weight-semibold);
}

.site-brand:hover {
    color: var(--text-primary);
}

.site-logo {
    display: block;
    width: auto;
    max-width: 180px;
    height: 48px;
    object-fit: contain;
}

.site-nav {
    gap: var(--space-1);
}

.site-nav .nav-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-3) !important;
    color: var(--text-secondary);
    border-radius: var(--radius-md);
    font-size: .875rem;
    font-weight: var(--weight-medium);
    transition: color var(--duration-fast) var(--ease-standard),
                background-color var(--duration-fast) var(--ease-standard);
}

.site-nav .nav-link:hover {
    color: var(--text-primary);
    background: var(--surface-hover);
}

.site-nav .nav-link.active {
    color: var(--primary);
    background: var(--primary-subtle);
}

.site-header .navbar-toggler {
    width: var(--control-height);
    height: var(--control-height);
    padding: 0;
    color: var(--text-primary);
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-md);
}

.site-header .navbar-toggler:focus {
    box-shadow: var(--focus-ring);
}

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

@media (max-width: 991.98px) {
    .site-header .navbar-collapse {
        margin-top: var(--space-2);
        padding: var(--space-3) 0 var(--space-2);
        border-top: 1px solid var(--border);
    }

    .site-nav .nav-link {
        width: 100%;
        padding: var(--space-3) !important;
    }

    .site-actions {
        flex-wrap: wrap;
        margin-top: var(--space-3);
        padding-top: var(--space-3);
        border-top: 1px solid var(--border);
    }
}

.site-main {
    min-height: calc(100vh - var(--header-height) - 72px);
    padding-top: var(--space-5);
    padding-bottom: var(--space-7);
}

.site-footer {
    padding: var(--space-5) 0;
    color: var(--text-muted);
    background: var(--surface);
    border-top: 1px solid var(--border);
    font-size: var(--text-sm);
}

/* --------------------------------------------------------------------------
   Kullanıcı menüsü (her iki layout'ta ortak)
   -------------------------------------------------------------------------- */
.user-menu__toggle {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    max-width: 260px;
}

.user-menu__toggle::after {
    margin-left: var(--space-1);
}

.user-menu__avatar {
    display: inline-flex;
    flex: 0 0 28px;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    color: var(--primary);
    background: var(--primary-subtle);
    border-radius: var(--radius-pill);
    font-size: var(--text-xs);
    font-weight: var(--weight-semibold);
    text-transform: uppercase;
}

.user-menu__name {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.user-menu .dropdown-menu {
    min-width: 220px;
}

/* Dar ekranda yönetim header'ında yalnızca avatar gösterilir */
@media (max-width: 575.98px) {
    .app-header .user-menu__name {
        display: none;
    }
}

.user-menu .dropdown-header {
    color: var(--text-muted);
    font-size: var(--text-xs);
}

.user-menu .dropdown-item {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.user-menu form {
    margin: 0;
}

/* --------------------------------------------------------------------------
   Yönetim paneli shell'i
   -------------------------------------------------------------------------- */
.app-body {
    min-height: 100vh;
}

.app-shell {
    display: flex;
    min-height: 100vh;
}

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

.app-header {
    position: sticky;
    top: 0;
    z-index: 1020;
    display: flex;
    align-items: center;
    gap: var(--space-2);
    height: var(--header-height);
    padding: 0 var(--space-5);
    background: rgba(255, 255, 255, .92);
    border-bottom: 1px solid var(--border);
    backdrop-filter: saturate(180%) blur(8px);
}

.app-header__actions {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    margin-left: auto;
}

.app-header .breadcrumb {
    --bs-breadcrumb-divider-color: var(--text-disabled);
    --bs-breadcrumb-item-active-color: var(--text-primary);
    --bs-breadcrumb-margin-bottom: 0;
    flex-wrap: nowrap;
    min-width: 0;
    font-size: .875rem;
}

.app-header .breadcrumb-item {
    overflow: hidden;
    color: var(--text-muted);
    text-overflow: ellipsis;
    white-space: nowrap;
}

.app-header .breadcrumb-item.active {
    font-weight: var(--weight-medium);
}

.app-content {
    flex: 1 1 auto;
    padding: var(--space-5);
}

@media (min-width: 1200px) {
    .app-content {
        padding: var(--space-6);
    }
}

@media (max-width: 575.98px) {
    .app-header {
        padding: 0 var(--space-3);
    }

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

    /* Dar ekranda breadcrumb'da yalnızca aktif sayfa gösterilir */
    .app-header .breadcrumb-item:not(.active) {
        display: none;
    }

    .app-header .breadcrumb-item.active::before {
        display: none;
    }
}

/* --------------------------------------------------------------------------
   Sidebar
   Masaüstünde (>= 992px) sabit sütun, altında Bootstrap offcanvas (drawer).
   -------------------------------------------------------------------------- */
.app-sidebar {
    --bs-offcanvas-width: 280px;
    --bs-offcanvas-bg: var(--surface);
}

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

.app-sidebar__brand {
    display: flex;
    flex: 0 0 var(--header-height);
    align-items: center;
    gap: var(--space-3);
    height: var(--header-height);
    padding: 0 var(--space-4);
    border-bottom: 1px solid var(--border);
}

.app-sidebar__brand-link {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    min-width: 0;
    color: var(--text-primary);
}

.app-sidebar__brand-link:hover {
    color: var(--text-primary);
    text-decoration: none;
}

.app-sidebar__logo {
    flex: 0 0 auto;
    width: auto;
    max-width: 40px;
    height: 36px;
    object-fit: contain;
}

.app-sidebar__title {
    display: flex;
    flex-direction: column;
    min-width: 0;
    line-height: var(--leading-tight);
}

.app-sidebar__title strong {
    overflow: hidden;
    font-size: .875rem;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.app-sidebar__title small {
    color: var(--text-muted);
    font-size: var(--text-xs);
}

.app-sidebar__close {
    margin-left: auto;
}

.app-sidebar__nav {
    flex: 1 1 auto;
    padding: var(--space-3);
    overflow-x: hidden;
    overflow-y: auto;
    overscroll-behavior: contain;
    scrollbar-width: thin;
}

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

.sidebar-list {
    margin: 0;
    padding: 0;
    list-style: none;
}

.sidebar-list + .sidebar-group,
.sidebar-group + .sidebar-group {
    margin-top: var(--space-1);
}

.sidebar-list--sub {
    padding: 2px 0 var(--space-2);
}

.sidebar-link,
.sidebar-group__toggle {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    width: 100%;
    min-height: 38px;
    padding: var(--space-2) var(--space-3);
    color: var(--text-secondary);
    background: transparent;
    border: 0;
    border-radius: var(--radius-md);
    font-size: .875rem;
    font-weight: var(--weight-medium);
    text-align: left;
    white-space: nowrap;
    transition: color var(--duration-fast) var(--ease-standard),
                background-color var(--duration-fast) var(--ease-standard);
}

.sidebar-link:hover,
.sidebar-group__toggle:hover {
    color: var(--text-primary);
    background: var(--surface-hover);
    text-decoration: none;
}

.sidebar-link.active {
    position: relative;
    color: var(--primary);
    background: var(--primary-subtle);
}

.sidebar-link.active::before {
    content: "";
    position: absolute;
    top: 8px;
    bottom: 8px;
    left: 0;
    width: 3px;
    background: var(--primary);
    border-radius: 0 3px 3px 0;
}

.sidebar-list--sub .sidebar-link {
    min-height: 34px;
    padding-left: calc(var(--space-3) + 12px);
    font-weight: var(--weight-regular);
}

.sidebar-list--sub .sidebar-link.active {
    font-weight: var(--weight-medium);
}

.sidebar-list--sub .nav-icon {
    font-size: 13px;
    opacity: .85;
}

.nav-label {
    overflow: hidden;
    text-overflow: ellipsis;
}

.sidebar-group__chevron {
    margin-left: auto;
    color: var(--text-muted);
    transition: transform var(--duration-base) var(--ease-standard);
}

.sidebar-group__toggle[aria-expanded="true"] .sidebar-group__chevron {
    transform: rotate(180deg);
}

.sidebar-group__toggle.has-active {
    color: var(--text-primary);
}

/* Bootstrap collapse geçişi token süresiyle */
.app-sidebar .collapsing {
    transition: height var(--duration-base) var(--ease-standard);
}

@media (min-width: 992px) {
    .app-sidebar {
        position: sticky;
        top: 0;
        flex: 0 0 var(--sidebar-width);
        width: var(--sidebar-width);
        height: 100vh;
        border-right: 1px solid var(--border);
        transition: width var(--duration-base) var(--ease-standard),
                    flex-basis var(--duration-base) var(--ease-standard);
    }

    .app-sidebar__close {
        display: none;
    }

    /* ---- Daraltılmış sidebar: yalnızca ikonlar ---- */
    .sidebar-collapsed .app-sidebar {
        flex-basis: var(--sidebar-width-collapsed);
        width: var(--sidebar-width-collapsed);
    }

    .sidebar-collapsed .app-sidebar__brand {
        justify-content: center;
        padding: 0;
    }

    .sidebar-collapsed .app-sidebar__title,
    .sidebar-collapsed .sidebar-group__toggle {
        display: none;
    }

    /* Menü metni görsel olarak gizlenir ama ekran okuyucular için bağlantının adı olarak kalır */
    .sidebar-collapsed .nav-label {
        position: absolute;
        width: 1px;
        height: 1px;
        overflow: hidden;
        clip: rect(0 0 0 0);
        white-space: nowrap;
    }

    .sidebar-collapsed .sidebar-link {
        justify-content: center;
        padding-right: 0;
        padding-left: 0;
    }

    /* Daraltılmış görünümde tüm alt öğeler ikon olarak görünür */
    .sidebar-collapsed .app-sidebar .collapse {
        display: block !important;
        height: auto !important;
    }

    .sidebar-collapsed .sidebar-list--sub {
        padding: 0;
    }

    .sidebar-collapsed .sidebar-group {
        margin-top: var(--space-2);
        padding-top: var(--space-2);
        border-top: 1px solid var(--border);
    }
}

/* --------------------------------------------------------------------------
   Sayfa başlığı bileşeni (<page-header>)
   -------------------------------------------------------------------------- */
.page-header {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-end;
    justify-content: space-between;
    gap: var(--space-4);
    margin-bottom: var(--space-5);
}

.page-header__text {
    min-width: 0;
}

.page-header__title {
    margin: 0;
    font-size: var(--text-3xl);
}

.page-header__description {
    max-width: 720px;
    margin: var(--space-1) 0 0;
    color: var(--text-secondary);
    font-size: var(--text-base);
}

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

@media (max-width: 767.98px) {
    .page-header__title {
        font-size: var(--text-2xl);
    }
}

/* --------------------------------------------------------------------------
   Yazdırma: sayfa kabuğu çıktıya girmez
   -------------------------------------------------------------------------- */
@media print {
    .skip-link,
    .site-header,
    .site-footer,
    .app-sidebar,
    .app-header {
        display: none !important;
    }

    .app-content,
    .site-main {
        padding: 0 !important;
    }
}