:root {
    --vik-navy: #1B2A4A;
    --vik-navy-700: #223357;
    --vik-navy-600: #2c3f66;
    --vik-gold: #C9A227;
    --vik-gold-600: #b18f1f;
    --vik-bg: #f4f6f9;
    --vik-sidebar-w: 250px;
}

html { position: relative; min-height: 100%; }

body {
    background: var(--vik-bg);
    color: #23272f;
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

a { color: var(--vik-navy); }

/* ---- Layout kabuğu ---- */
.vik-shell { display: flex; min-height: 100vh; }

.vik-sidebar {
    width: var(--vik-sidebar-w);
    background: var(--vik-navy);
    color: #cdd6e4;
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0; bottom: 0; left: 0;
    z-index: 1030;
    transition: transform .2s ease;
}

.vik-sidebar .brand {
    display: flex;
    flex-direction: column;
    gap: .5rem;
    padding: 1rem 1.15rem;
    border-bottom: 1px solid rgba(255,255,255,.08);
}
.vik-sidebar .brand-chip {
    background: #fff;
    border-radius: 8px;
    padding: 10px 14px;
    display: flex;
    justify-content: center;
    align-items: center;
}
.vik-sidebar .brand-chip img { height: 40px; max-width: 100%; }
.vik-sidebar .brand-sub {
    text-align: center;
    color: var(--vik-gold);
    font-size: .72rem;
    letter-spacing: .14em;
    text-transform: uppercase;
    font-weight: 600;
}

.vik-nav { padding: .5rem 0; overflow-y: auto; flex: 1; }
.vik-nav .nav-section {
    font-size: .7rem;
    text-transform: uppercase;
    letter-spacing: .08em;
    color: #7c89a3;
    padding: .9rem 1.15rem .35rem;
}
.vik-nav a {
    display: flex;
    align-items: center;
    gap: .7rem;
    padding: .6rem 1.15rem;
    color: #cdd6e4;
    text-decoration: none;
    font-size: .93rem;
    border-left: 3px solid transparent;
}
.vik-nav a i { font-size: 1.05rem; width: 1.2rem; text-align: center; }
.vik-nav a:hover { background: var(--vik-navy-700); color: #fff; }
.vik-nav a.active {
    background: var(--vik-navy-600);
    color: #fff;
    border-left-color: var(--vik-gold);
}

/* ---- İçerik ---- */
.vik-main {
    flex: 1;
    margin-left: var(--vik-sidebar-w);
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.vik-topbar {
    height: 60px;
    background: #fff;
    border-bottom: 1px solid #e5e9f0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 1.25rem;
    position: sticky;
    top: 0;
    z-index: 1020;
}
.vik-topbar .page-title { font-weight: 600; color: var(--vik-navy); }

.vik-content { padding: 1.5rem; flex: 1; }

/* ---- Marka bileşenleri ---- */
.btn-vik {
    background: var(--vik-navy);
    border-color: var(--vik-navy);
    color: #fff;
}
.btn-vik:hover { background: var(--vik-navy-700); border-color: var(--vik-navy-700); color: #fff; }

.btn-gold { background: var(--vik-gold); border-color: var(--vik-gold); color: #1b2a4a; font-weight: 600; }
.btn-gold:hover { background: var(--vik-gold-600); border-color: var(--vik-gold-600); color: #1b2a4a; }

.text-gold { color: var(--vik-gold) !important; }
.text-navy { color: var(--vik-navy) !important; }

.card { border: 1px solid #e5e9f0; border-radius: .6rem; }
.card .card-header { background: #fff; border-bottom: 1px solid #eef1f6; font-weight: 600; }

/* ---- Durum badge'leri ---- */
.badge-pending { background: #fff3cd; color: #997404; }
.badge-approved { background: #d1e7dd; color: #0f5132; }
.badge-rejected { background: #f8d7da; color: #842029; }
.badge-cancelled { background: #e2e3e5; color: #41464b; }

/* ---- Sidebar toggle (mobil) ---- */
.vik-sidebar-backdrop {
    display: none;
    position: fixed; inset: 0;
    background: rgba(0,0,0,.4);
    z-index: 1025;
}

@media (max-width: 991.98px) {
    .vik-sidebar { transform: translateX(-100%); }
    .vik-sidebar.open { transform: translateX(0); }
    .vik-main { margin-left: 0; }
    .vik-sidebar-backdrop.show { display: block; }
}