:root {
    --sp-primary: #2a5298;
    --sp-primary-dark: #1e3c72;
    --sp-sidebar-w: 250px;
    --sp-bg: #f4f6f9;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    background: var(--sp-bg);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    color: #2b2b2b;
}

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

/* Sidebar */
.sidebar {
    width: var(--sp-sidebar-w);
    background: linear-gradient(180deg, var(--sp-primary-dark) 0%, var(--sp-primary) 100%);
    color: #cdd7e6;
    position: fixed;
    top: 0; left: 0; bottom: 0;
    overflow-y: auto;
    z-index: 1040;
    transition: transform .25s ease;
}
.sidebar-brand {
    display: flex; align-items: center; gap: 10px;
    padding: 18px 20px;
    font-size: 1.25rem; font-weight: 700; color: #fff;
    border-bottom: 1px solid rgba(255,255,255,.1);
}
.sidebar-brand i { font-size: 1.6rem; }
.sidebar-nav { padding: 10px 0 40px; }
.nav-section {
    font-size: 11px; letter-spacing: 1px; color: rgba(255,255,255,.45);
    padding: 16px 20px 6px; text-transform: uppercase;
}
.sidebar-nav .nav-link {
    display: flex; align-items: center; gap: 12px;
    padding: 11px 20px; color: #cdd7e6; text-decoration: none;
    font-size: .92rem; border-left: 3px solid transparent;
}
.sidebar-nav .nav-link i { font-size: 1.1rem; width: 20px; text-align: center; }
.sidebar-nav .nav-link:hover { background: rgba(255,255,255,.08); color: #fff; }
.sidebar-nav .nav-link.active {
    background: rgba(255,255,255,.14); color: #fff;
    border-left-color: #ffc107;
}

/* Dinamik menü: alt menü ve açılır grup */
.sidebar-nav .nav-parent .nav-caret { transition: transform .2s ease; font-size: .8rem; }
.sidebar-nav .nav-parent[aria-expanded="true"] .nav-caret { transform: rotate(180deg); }
.sidebar-nav .nav-sub {
    padding-left: 40px !important; font-size: .86rem; color: #aebacb;
}
.sidebar-nav .nav-sub i { font-size: .55rem !important; }
.sidebar-nav .nav-sub.active { border-left-color: #ffc107; }

/* Login As (impersonation) bandı */
.impersonate-bar {
    display: flex; align-items: center; gap: 8px; flex-wrap: wrap;
    background: #fff3cd; color: #664d03; border-bottom: 1px solid #ffe69c;
    padding: 8px 16px; font-size: .9rem;
}

.sidebar-overlay {
    display: none; position: fixed; inset: 0;
    background: rgba(0,0,0,.5); z-index: 1035;
}

/* Mobilde sidebar açıkken arka plan kaymasın */
body.sidebar-open { overflow: hidden; }
@media (min-width: 992px) {
    body.sidebar-open { overflow: auto; }
}

/* Content */
.app-content {
    flex: 1; margin-left: var(--sp-sidebar-w);
    display: flex; flex-direction: column; min-width: 0;
}
.topbar {
    background: #fff; height: 62px;
    display: flex; align-items: center; padding: 0 20px;
    box-shadow: 0 1px 4px rgba(0,0,0,.06);
    position: sticky; top: 0; z-index: 1020;
}
.topbar-title { font-weight: 600; font-size: 1.1rem; }
.avatar {
    width: 34px; height: 34px; border-radius: 50%;
    background: var(--sp-primary); color: #fff;
    display: inline-flex; align-items: center; justify-content: center;
    font-weight: 600;
}
.main-area { padding: 22px; flex: 1; }

/* Stat cards */
.stat-card {
    border: none; border-radius: 14px; overflow: hidden;
    box-shadow: 0 2px 10px rgba(0,0,0,.05);
}
.stat-card .stat-icon {
    width: 52px; height: 52px; border-radius: 12px;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.5rem;
}
.stat-card .stat-value { font-size: 1.6rem; font-weight: 700; }
.stat-card .stat-label { color: #6c757d; font-size: .85rem; }

.card { border: none; border-radius: 14px; box-shadow: 0 2px 10px rgba(0,0,0,.05); }
.card-header { background: #fff; border-bottom: 1px solid #eef1f5; font-weight: 600; border-radius: 14px 14px 0 0 !important; }

.page-header { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px; margin-bottom: 18px; }
.page-header h1 { font-size: 1.5rem; font-weight: 700; margin: 0; }

.table > :not(caption) > * > * { padding: .75rem .9rem; }
.table thead th { background: #f8f9fb; font-size: .8rem; text-transform: uppercase; letter-spacing: .3px; color: #6c757d; border-bottom: 2px solid #eef1f5; }

.btn-primary { background: var(--sp-primary); border-color: var(--sp-primary); }
.btn-primary:hover { background: var(--sp-primary-dark); border-color: var(--sp-primary-dark); }

.badge { font-weight: 500; padding: .4em .7em; }

/* Tablolar: yatay kaydırma ipucu */
.table-responsive { -webkit-overflow-scrolling: touch; }

/* Tablo arama kutusu */
.table-search-group { max-width: 320px; }

/* Responsive */
@media (max-width: 991.98px) {
    .sidebar {
        transform: translateX(-100%);
        width: 270px;
        box-shadow: 2px 0 18px rgba(0,0,0,.25);
    }
    .sidebar.show { transform: translateX(0); }
    .app-content { margin-left: 0; }
    .sidebar-overlay.show { display: block; }
    /* Mobilde menü linklerine daha rahat dokunma alanı */
    .sidebar-nav .nav-link { padding: 14px 20px; font-size: 1rem; }
}

@media (max-width: 767.98px) {
    .main-area { padding: 14px 12px; }
    .topbar { padding: 0 12px; height: 58px; }
    .topbar-brand-mobile { font-size: 1.05rem; }

    /* Başlık alanı: dikey yığ ve butonlar tam genişlik */
    .page-header { margin-bottom: 14px; gap: 10px; }
    .page-header h1 { font-size: 1.25rem; }
    .page-header > .d-flex,
    .page-header > .btn,
    .page-header > a.btn { width: 100%; }
    .page-header .btn { justify-content: center; }
    .page-header > .d-flex { flex-wrap: wrap; }
    .page-header > .d-flex > .btn,
    .page-header > .d-flex > form,
    .page-header > .d-flex > form .btn,
    .page-header > .d-flex > a { flex: 1 1 auto; }

    /* Kartlar */
    .card-body { padding: 1rem; }
    .stat-card .stat-value { font-size: 1.3rem; }
    .stat-card .stat-icon { width: 44px; height: 44px; font-size: 1.25rem; }
    .stat-card .card-body { padding: .85rem; gap: .65rem !important; }

    /* Tablolar: daha kompakt ve okunaklı */
    .table > :not(caption) > * > * { padding: .6rem .5rem; }
    .table thead th { font-size: .68rem; white-space: nowrap; }
    .table td, .table th { font-size: .9rem; }

    /* İşlem butonları: parmakla dokunmaya uygun dokunma alanı */
    .table .btn-sm { padding: .45rem .65rem; line-height: 1.2; }
    .table .btn-sm i { font-size: 1rem; }
    .table .btn-sm + .btn-sm { margin-left: 2px; }
    .table td.text-end .btn-sm { margin-bottom: 2px; }

    /* Modal: küçük ekranda kenarlardan boşluk azalt */
    .modal-dialog { margin: .5rem; }

    /* Form alanları: iOS otomatik yakınlaştırmasını engelle (>=16px) */
    .form-control, .form-select { font-size: 16px; }

    /* Arama kutusu tam genişlik */
    .table-search-group { max-width: 100%; }
}

/* Çok küçük ekranlar */
@media (max-width: 575.98px) {
    .stat-card .stat-value { font-size: 1.15rem; }
    .display-6 { font-size: 1.6rem; }
    h1 { font-size: 1.2rem; }
    /* Dokunma hedeflerini büyüt */
    .btn { min-height: 42px; }
    .btn-sm { min-height: 34px; }
    .dropdown-menu { font-size: .95rem; }
}

/* Login */
.auth-page {
    min-height: 100vh; display: flex; align-items: center; justify-content: center;
    background: linear-gradient(135deg, var(--sp-primary-dark) 0%, var(--sp-primary) 100%);
    padding: 20px;
}
.auth-card { width: 100%; max-width: 420px; }

/* Print */
@media print {
    .sidebar, .topbar, .sidebar-overlay, .no-print { display: none !important; }
    .app-content { margin-left: 0 !important; }
    .main-area { padding: 0 !important; }
    .card { box-shadow: none !important; border: 1px solid #ddd !important; }
}