/* ============================================================
   Nakliyatçılar.net — Enterprise Header / Navigation
   SaaS-grade: utility bar · mega-menu · scroll-shrink · off-canvas drawer
   Theme-matched (blue #2563eb / orange #f97316 / Inter)
   ============================================================ */

:root {
    --nk-navbar-h: 70px;
    --nk-topbar-h: 40px;
    --nk-header-h: 110px;               /* topbar + navbar (desktop) */
    --nk-blue: #2563eb;
    --nk-blue-700: #1d4ed8;
    --nk-blue-800: #1e40af;
    --nk-orange: #f97316;
    --nk-orange-600: #ea580c;
    --nk-ink: #0f172a;
    --nk-slate: #475569;
    --nk-slate-2: #64748b;
    --nk-line: #e6e8ec;
    --nk-bg-soft: #f6f8fb;
}

/* Offset for the fixed header (applied to <main>) */
.nk-main-offset { padding-top: var(--nk-header-h); }

.nk-container {
    max-width: 1220px;
    margin: 0 auto;
    padding: 0 1.5rem;
    width: 100%;
}

/* ---------------- Header shell ---------------- */
.nk-header {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 1000;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: #fff;
    transition: box-shadow .25s ease;
}
.nk-header.is-scrolled { box-shadow: 0 6px 28px -10px rgba(15, 23, 42, .22); }

/* ---------------- Utility top bar ---------------- */
.nk-topbar {
    height: var(--nk-topbar-h);
    background: linear-gradient(90deg, #0d2350 0%, #1e3a8a 55%, #1d4ed8 100%);
    color: #c7d2fe;
    font-size: .82rem;
    display: flex;
    align-items: center;
    overflow: hidden;
    transition: height .25s ease, opacity .2s ease;
}
.nk-header.is-scrolled .nk-topbar { height: 0; opacity: 0; }
.nk-topbar .nk-container { display: flex; align-items: center; justify-content: space-between; }
.nk-topbar-left { display: flex; align-items: center; gap: 1.6rem; }
.nk-topbar-item { display: inline-flex; align-items: center; gap: .45rem; white-space: nowrap; }
.nk-topbar-item i { color: #fbbf24; font-size: .78rem; }
.nk-topbar-item strong { color: #fff; font-weight: 600; }
.nk-topbar-right { display: flex; align-items: center; gap: 1.1rem; }
.nk-topbar-right a { color: #dbeafe; display: inline-flex; align-items: center; gap: .4rem; transition: color .15s; }
.nk-topbar-right a:hover { color: #fff; }
.nk-topbar-sep { width: 1px; height: 14px; background: rgba(255, 255, 255, .22); }

/* ---------------- Main navbar ---------------- */
.nk-navbar {
    height: var(--nk-navbar-h);
    display: flex;
    align-items: center;
    background: #fff;
    border-bottom: 1px solid var(--nk-line);
}
.nk-navbar > .nk-container { display: flex; align-items: center; gap: 1.4rem; }

/* Logo */
.nk-logo { display: flex; align-items: center; gap: .65rem; flex-shrink: 0; }
.nk-logo-icon {
    width: 44px; height: 44px; border-radius: 13px;
    display: flex; align-items: center; justify-content: center;
    background: linear-gradient(135deg, var(--nk-blue) 0%, var(--nk-blue-800) 100%);
    color: #fff; font-size: 1.2rem;
    box-shadow: 0 8px 18px -5px rgba(37, 99, 235, .55);
}
.nk-logo-text { display: flex; flex-direction: column; line-height: 1; }
.nk-logo-main { font-size: 1.3rem; font-weight: 800; letter-spacing: -.02em; color: var(--nk-ink); }
.nk-logo-main b { color: var(--nk-orange-600); font-weight: 800; }
.nk-logo-sub { font-size: .6rem; font-weight: 600; letter-spacing: .16em; text-transform: uppercase; color: var(--nk-slate-2); margin-top: 4px; }

/* Desktop nav */
.nk-nav { display: flex; align-items: center; gap: .1rem; margin-left: .5rem; }
.nk-nav-item { position: relative; }
.nk-nav-link {
    position: relative;
    display: inline-flex; align-items: center; gap: .4rem;
    padding: .58rem .82rem; border-radius: 11px;
    color: var(--nk-slate); font-weight: 600; font-size: .94rem;
    cursor: pointer; transition: color .16s ease, background .16s ease;
    background: none; border: none; font-family: inherit; text-decoration: none;
}
.nk-nav-link .nk-caret { font-size: .58rem; color: #94a3b8; transition: transform .2s ease; }
.nk-nav-link:hover { color: var(--nk-blue-700); background: var(--nk-bg-soft); }
.nk-nav-item.is-open > .nk-nav-link,
.nk-nav-item:hover > .nk-nav-link,
.nk-nav-item:focus-within > .nk-nav-link { color: var(--nk-blue-700); background: #eef4ff; }
.nk-nav-item.is-open .nk-caret,
.nk-nav-item:hover .nk-caret,
.nk-nav-item:focus-within .nk-caret { transform: rotate(180deg); }
.nk-nav-link.is-active { color: var(--nk-blue-700); }
.nk-nav-link.is-active::after {
    content: ''; position: absolute; left: .82rem; right: .82rem; bottom: .12rem;
    height: 2px; background: var(--nk-blue); border-radius: 2px;
}

/* ---------------- Dropdown panels ---------------- */
.nk-panel {
    position: absolute; top: calc(100% + 12px); left: 0;
    min-width: 240px;
    background: #fff; border: 1px solid var(--nk-line); border-radius: 18px;
    box-shadow: 0 24px 56px -14px rgba(15, 23, 42, .3);
    padding: .55rem;
    opacity: 0; visibility: hidden; transform: translateY(8px);
    transition: opacity .18s ease, transform .18s ease;
    z-index: 60;
}
.nk-nav-item.is-open > .nk-panel,
.nk-nav-item:hover > .nk-panel,
.nk-nav-item:focus-within > .nk-panel { opacity: 1; visibility: visible; transform: translateY(0); }
.nk-panel::before {
    content: ''; position: absolute; top: -6px; left: 26px;
    width: 12px; height: 12px; background: #fff;
    border-left: 1px solid var(--nk-line); border-top: 1px solid var(--nk-line);
    transform: rotate(45deg);
}
/* Invisible bridge over the 12px gap so hover doesn't drop between trigger and panel */
.nk-panel::after { content: ''; position: absolute; left: 0; right: 0; top: -14px; height: 14px; }

/* Simple dropdown item */
.nk-drop-item {
    display: flex; align-items: center; gap: .7rem;
    padding: .62rem .7rem; border-radius: 11px;
    color: var(--nk-slate); font-weight: 500; font-size: .9rem;
    transition: background .14s ease, color .14s ease; text-decoration: none;
}
.nk-drop-item:hover { background: var(--nk-bg-soft); color: var(--nk-blue-700); }
.nk-drop-ic { width: 34px; height: 34px; flex-shrink: 0; border-radius: 9px; display: flex; align-items: center; justify-content: center; background: #eff6ff; color: var(--nk-blue); font-size: .9rem; }
.nk-drop-item > span:last-child { display: block; }
.nk-drop-tt { display: block; font-weight: 600; color: var(--nk-ink); font-size: .9rem; }
.nk-drop-ds { display: block; font-size: .76rem; color: var(--nk-slate-2); margin-top: 1px; }

/* Mega menu (Hizmetler) */
.nk-panel.nk-mega { width: 640px; padding: 1rem; }
.nk-mega-head {
    display: flex; align-items: center; justify-content: space-between;
    padding: .1rem .5rem .65rem; margin-bottom: .5rem;
    border-bottom: 1px solid var(--nk-line);
}
.nk-mega-head h4 { font-size: .7rem; letter-spacing: .12em; text-transform: uppercase; color: var(--nk-slate-2); font-weight: 700; margin: 0; }
.nk-mega-head a { font-size: .8rem; font-weight: 700; color: var(--nk-blue-700); text-decoration: none; }
.nk-mega-head a:hover { color: var(--nk-blue-800); }
.nk-mega-grid { display: grid; grid-template-columns: 1fr 1fr; gap: .3rem; }
.nk-mega-item { display: flex; gap: .8rem; padding: .7rem; border-radius: 13px; transition: background .14s ease; text-decoration: none; }
.nk-mega-item:hover { background: var(--nk-bg-soft); }
.nk-mega-item > span:last-child { display: block; }
.nk-mega-ic { width: 42px; height: 42px; flex-shrink: 0; border-radius: 11px; display: flex; align-items: center; justify-content: center; font-size: 1.05rem; }
.nk-mega-ic.c1 { background: #eff6ff; color: #2563eb; }
.nk-mega-ic.c2 { background: #fff7ed; color: #ea580c; }
.nk-mega-ic.c3 { background: #ecfdf5; color: #059669; }
.nk-mega-ic.c4 { background: #f5f3ff; color: #7c3aed; }
.nk-mega-tt { display: block; font-weight: 700; color: var(--nk-ink); font-size: .92rem; margin-bottom: 2px; }
.nk-mega-ds { display: block; font-size: .78rem; color: var(--nk-slate-2); line-height: 1.35; }
.nk-mega-cta {
    grid-column: 1 / -1; margin-top: .4rem;
    display: flex; align-items: center; justify-content: space-between; gap: 1rem;
    padding: .85rem 1rem; border-radius: 13px;
    background: linear-gradient(120deg, #0d2350 0%, #1d4ed8 100%); color: #fff; text-decoration: none;
}
.nk-mega-cta:hover { color: #fff; filter: brightness(1.06); }
.nk-mega-cta > span:first-child { display: block; }
.nk-mega-cta .t { display: block; font-weight: 700; font-size: .95rem; color: #fff; }
.nk-mega-cta .s { display: block; font-size: .78rem; color: #c7d2fe; margin-top: 2px; }
.nk-mega-cta .nk-mega-cta-btn { background: var(--nk-orange); color: #fff; padding: .5rem .95rem; border-radius: 10px; font-weight: 700; font-size: .85rem; white-space: nowrap; }

/* ---------------- Right actions ---------------- */
.nk-actions { display: flex; align-items: center; gap: .6rem; margin-left: auto; flex-shrink: 0; }
.nk-btn {
    display: inline-flex; align-items: center; gap: .5rem;
    padding: .6rem 1.15rem; border-radius: 12px;
    font-weight: 700; font-size: .92rem; cursor: pointer;
    transition: transform .16s ease, box-shadow .18s ease, background .16s ease, border-color .16s ease, color .16s ease;
    white-space: nowrap; border: 1.5px solid transparent; text-decoration: none; font-family: inherit;
}
.nk-btn-cta {
    background: linear-gradient(135deg, var(--nk-orange) 0%, var(--nk-orange-600) 100%);
    color: #fff; box-shadow: 0 10px 22px -8px rgba(234, 88, 12, .6);
}
.nk-btn-cta:hover { transform: translateY(-1px); box-shadow: 0 14px 28px -8px rgba(234, 88, 12, .65); color: #fff; }
.nk-btn-ghost { color: var(--nk-slate); border-color: var(--nk-line); background: #fff; }
.nk-btn-ghost:hover { border-color: #93c5fd; color: var(--nk-blue-700); background: var(--nk-bg-soft); }
.nk-btn-solid { background: var(--nk-blue); color: #fff; }
.nk-btn-solid:hover { background: var(--nk-blue-700); color: #fff; }

/* User dropdown (authenticated) */
.nk-user { position: relative; }
.nk-user-trigger {
    display: flex; align-items: center; gap: .5rem;
    padding: .32rem .7rem .32rem .38rem; border-radius: 999px;
    border: 1.5px solid var(--nk-line); background: #fff; cursor: pointer;
    transition: border-color .15s ease, background .15s ease; font-family: inherit;
}
.nk-user-trigger:hover { border-color: #c7d2fe; background: var(--nk-bg-soft); }
.nk-avatar {
    width: 34px; height: 34px; border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    background: linear-gradient(135deg, var(--nk-blue) 0%, var(--nk-blue-800) 100%);
    color: #fff; font-weight: 700; font-size: .85rem; overflow: hidden;
}
.nk-avatar img { width: 100%; height: 100%; object-fit: cover; }
.nk-user-name { font-weight: 600; font-size: .9rem; color: var(--nk-ink); max-width: 130px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.nk-user-caret { font-size: .6rem; color: #94a3b8; transition: transform .2s; }
.nk-user.is-open .nk-user-caret { transform: rotate(180deg); }
.nk-user .nk-panel { right: 0; left: auto; min-width: 230px; }
.nk-user .nk-panel::before { left: auto; right: 26px; }
.nk-user.is-open > .nk-panel { opacity: 1; visibility: visible; transform: translateY(0); }
.nk-user-head { padding: .55rem .65rem .7rem; border-bottom: 1px solid var(--nk-line); margin-bottom: .35rem; }
.nk-user-head .nm { font-weight: 700; color: var(--nk-ink); font-size: .92rem; }
.nk-user-head .rl { font-size: .74rem; color: var(--nk-slate-2); margin-top: 2px; }
.nk-logout-form { margin: 0; }
.nk-logout { width: 100%; text-align: left; color: #dc2626; background: none; border: none; cursor: pointer; }
.nk-logout:hover { background: #fef2f2; color: #dc2626; }
.nk-logout .nk-drop-ic { background: #fef2f2; color: #dc2626; }

/* Hamburger */
.nk-burger {
    display: none; width: 46px; height: 46px; border-radius: 12px;
    border: 1.5px solid var(--nk-line); background: #fff; cursor: pointer;
    align-items: center; justify-content: center; flex-direction: column; gap: 4px; margin-left: .35rem;
}
.nk-burger span { width: 20px; height: 2px; background: var(--nk-ink); border-radius: 2px; transition: transform .28s ease, opacity .2s ease; }
.nk-burger.is-active span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nk-burger.is-active span:nth-child(2) { opacity: 0; }
.nk-burger.is-active span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* ---------------- Mobile off-canvas drawer ---------------- */
.nk-overlay {
    position: fixed; inset: 0; background: rgba(15, 23, 42, .5);
    opacity: 0; visibility: hidden; transition: opacity .3s ease;
    z-index: 1100; -webkit-backdrop-filter: blur(2px); backdrop-filter: blur(2px);
}
.nk-overlay.is-open { opacity: 1; visibility: visible; }
.nk-drawer {
    position: fixed; top: 0; right: 0; bottom: 0;
    width: min(87vw, 380px); background: #fff; z-index: 1200;
    transform: translateX(100%); transition: transform .32s cubic-bezier(.4, 0, .2, 1);
    display: flex; flex-direction: column;
    box-shadow: -24px 0 70px -24px rgba(0, 0, 0, .45);
}
.nk-drawer.is-open { transform: translateX(0); }
.nk-drawer-head {
    display: flex; align-items: center; justify-content: space-between;
    padding: 1rem 1.15rem; border-bottom: 1px solid var(--nk-line);
    padding-top: calc(1rem + env(safe-area-inset-top, 0px));
}
.nk-drawer-close { width: 42px; height: 42px; border-radius: 11px; border: 1.5px solid var(--nk-line); background: #fff; color: var(--nk-ink); font-size: 1.05rem; cursor: pointer; display: flex; align-items: center; justify-content: center; }
.nk-drawer-close:hover { background: var(--nk-bg-soft); }
.nk-drawer-body { flex: 1; overflow-y: auto; padding: .6rem .65rem; -webkit-overflow-scrolling: touch; }
.nk-m-link {
    display: flex; align-items: center; gap: .8rem;
    padding: .85rem .8rem; border-radius: 12px;
    color: var(--nk-ink); font-weight: 600; font-size: 1rem; text-decoration: none;
}
.nk-m-link i.lead { width: 22px; text-align: center; color: var(--nk-blue); font-size: 1rem; }
.nk-m-link:active { background: var(--nk-bg-soft); }
.nk-m-acc { border-radius: 12px; }
.nk-m-acc-head {
    display: flex; align-items: center; gap: .8rem; width: 100%;
    padding: .85rem .8rem; border-radius: 12px;
    background: none; border: none; cursor: pointer; font-family: inherit;
    color: var(--nk-ink); font-weight: 600; font-size: 1rem; text-align: left;
}
.nk-m-acc-head i.lead { width: 22px; text-align: center; color: var(--nk-blue); }
.nk-m-acc-head .chev { margin-left: auto; color: #94a3b8; font-size: .75rem; transition: transform .25s ease; }
.nk-m-acc.is-open .nk-m-acc-head { color: var(--nk-blue-700); }
.nk-m-acc.is-open .chev { transform: rotate(180deg); }
.nk-m-acc-body { max-height: 0; overflow: hidden; transition: max-height .3s ease; }
.nk-m-acc.is-open .nk-m-acc-body { max-height: 460px; }
.nk-m-sub {
    display: flex; align-items: center; gap: .7rem;
    padding: .68rem .8rem .68rem 3.1rem; border-radius: 10px;
    color: var(--nk-slate); font-weight: 500; font-size: .92rem; text-decoration: none;
}
.nk-m-sub i { color: #94a3b8; width: 16px; text-align: center; }
.nk-m-sub:active { background: var(--nk-bg-soft); }
.nk-drawer-divider { height: 1px; background: var(--nk-line); margin: .5rem .6rem; }
.nk-drawer-foot {
    padding: 1rem 1.15rem; border-top: 1px solid var(--nk-line);
    display: flex; flex-direction: column; gap: .6rem;
    padding-bottom: calc(1rem + env(safe-area-inset-bottom, 0px));
}
.nk-drawer-foot .nk-btn { width: 100%; justify-content: center; padding: .8rem 1rem; }
.nk-drawer-trust { display: flex; align-items: center; justify-content: center; gap: 1.2rem; padding: .3rem 0 .1rem; }
.nk-drawer-trust span { font-size: .72rem; color: var(--nk-slate-2); display: inline-flex; align-items: center; gap: .3rem; }
.nk-drawer-trust i { color: #16a34a; }

/* ---------------- Responsive ---------------- */
@media screen and (max-width: 1023px) {
    :root { --nk-navbar-h: 64px; --nk-header-h: 64px; }
    .nk-topbar { display: none; }
    .nk-nav { display: none; }
    .nk-actions .nk-desktop-only { display: none; }
    .nk-actions { gap: .45rem; }
    .nk-burger { display: flex; }
    .nk-container { padding: 0 .9rem; }
    .nk-navbar > .nk-container { gap: .6rem; }
    .nk-logo { gap: .5rem; }
    .nk-logo-icon { width: 40px; height: 40px; font-size: 1.05rem; }
    .nk-logo-main { font-size: 1.12rem; }
    .nk-logo-sub { display: none; }
    /* Icon-only CTA on mobile (full CTA lives in the drawer) */
    .nk-actions .nk-cta-mobile .nk-cta-label { display: none; }
    .nk-actions .nk-cta-mobile { padding: .62rem .78rem; }
}
@media screen and (max-width: 340px) {
    .nk-logo-main { font-size: 1rem; }
    .nk-logo-icon { width: 36px; height: 36px; }
}

body.nk-no-scroll { overflow: hidden; }