/* ============================================================
   Base · Reset · Header (topbar + nav + arama) · Footer
   ============================================================ */
*,*::before,*::after{box-sizing:border-box}*{margin:0}
html{-webkit-text-size-adjust:100%}
body{font-family:var(--font);font-size:16px;line-height:1.6;color:var(--ink);background:var(--bg);-webkit-font-smoothing:antialiased;overflow-x:hidden}
img,svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer;border:none;background:none;color:inherit}
ul{list-style:none;padding:0}
h1,h2,h3,h4{line-height:1.18;font-weight:800;letter-spacing:-0.01em;color:var(--navy)}
input{font:inherit}

.wrap{width:100%;max-width:var(--maxw);margin-inline:auto;padding-inline:var(--gutter)}
.section{padding-block:56px}
.section-soft{background:var(--bg-soft)}

/* section heading (eski site tarzı: ortada, mavi alt çizgi) */
.sec-title{text-align:center;margin-bottom:36px}
.sec-title h2{font-size:clamp(1.5rem,3.2vw,2.1rem);text-transform:uppercase;letter-spacing:.02em}
.sec-title h2 .accent{color:var(--blue)}
.sec-title::after{content:"";display:block;width:64px;height:3px;background:var(--blue);margin:14px auto 0;border-radius:2px}
.sec-title.left{text-align:left}
.sec-title.left::after{margin-inline:0}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:.5em;padding:.7rem 1.3rem;border-radius:var(--radius-sm);font-weight:600;font-size:.95rem;transition:all .2s var(--ease);white-space:nowrap}
.btn svg{width:16px;height:16px}
.btn-primary{background:var(--blue);color:#fff}
.btn-primary:hover{background:var(--blue-deep)}
.btn-outline{background:#fff;color:var(--blue);border:1.5px solid var(--blue)}
.btn-outline:hover{background:var(--blue);color:#fff}
.btn-ghost{background:rgba(255,255,255,.14);color:#fff;border:1.5px solid rgba(255,255,255,.5)}
.btn-ghost:hover{background:#fff;color:var(--blue)}
.btn-wa{background:var(--wa);color:#fff}
.btn-wa:hover{filter:brightness(.95)}

/* ---------- Top bar ---------- */
.topbar{background:var(--navy);color:#cdd8e6;font-size:.82rem}
.topbar .wrap{display:flex;align-items:center;justify-content:space-between;height:38px;gap:1rem}
.topbar a{color:#cdd8e6;transition:color .2s}
.topbar a:hover{color:#fff}
.topbar .tb-left{display:flex;gap:1.4rem;align-items:center}
.topbar .tb-left span{display:inline-flex;align-items:center;gap:.4rem}
.topbar .tb-left svg{width:13px;height:13px;color:var(--blue-bright)}
.topbar .tb-social{display:flex;gap:.6rem;align-items:center}
.topbar .tb-social a{width:24px;height:24px;display:grid;place-items:center;border-radius:5px;background:rgba(255,255,255,.08)}
.topbar .tb-social a:hover{background:var(--blue)}
.topbar .tb-social svg{width:13px;height:13px}

/* ---------- Header ---------- */
.site-header{position:sticky;top:0;z-index:100;background:#fff;border-bottom:1px solid var(--line);box-shadow:0 2px 8px rgba(15,39,71,0)}
.site-header.scrolled{box-shadow:var(--shadow-sm)}
.header-main{display:flex;align-items:center;gap:1.5rem;height:72px}
.logo{display:flex;align-items:center;gap:.6rem;flex:0 0 auto}
.logo .mark{width:42px;height:42px}
.logo .lt{display:flex;flex-direction:column;line-height:1.05}
.logo .lt b{font-size:1.15rem;font-weight:800;color:var(--navy);letter-spacing:-.02em}
.logo .lt small{font-size:.62rem;letter-spacing:.12em;text-transform:uppercase;color:var(--muted-2);font-weight:600}

.main-nav{display:flex;align-items:center;gap:.2rem;margin-left:auto}
.main-nav>li>a,.main-nav .nav-trigger{display:inline-flex;align-items:center;gap:.3rem;padding:.6rem .85rem;font-size:.92rem;font-weight:600;color:var(--ink);border-radius:6px;transition:color .2s,background .2s}
.main-nav>li>a:hover,.main-nav .nav-trigger:hover{color:var(--blue);background:var(--blue-wash)}
.main-nav .nav-trigger svg{width:13px;height:13px;transition:transform .25s}
.has-mega{position:relative}
.has-mega[aria-expanded="true"] .nav-trigger{color:var(--blue);background:var(--blue-wash)}
.has-mega[aria-expanded="true"] .nav-trigger svg{transform:rotate(180deg)}

.header-search{display:flex;align-items:center;background:var(--bg-soft);border:1px solid var(--line);border-radius:7px;padding:.15rem .15rem .15rem .7rem;min-width:190px}
.header-search input{border:none;background:none;outline:none;font-size:.88rem;width:100%;color:var(--ink)}
.header-search button{width:32px;height:32px;border-radius:6px;background:var(--blue);color:#fff;display:grid;place-items:center;flex:0 0 auto}
.header-search button svg{width:15px;height:15px}

/* mega menu */
.mega{position:absolute;top:calc(100% + 8px);left:50%;transform:translateX(-50%) translateY(6px);width:min(720px,90vw);background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-lg);padding:14px;opacity:0;visibility:hidden;pointer-events:none;transition:.22s var(--ease)}
.has-mega[aria-expanded="true"] .mega{opacity:1;visibility:visible;pointer-events:auto;transform:translateX(-50%) translateY(0)}
.mega-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:2px}
.mega-item{display:block;padding:.6rem .8rem;border-radius:6px;transition:background .18s}
.mega-item:hover{background:var(--blue-wash)}
.mega-item b{display:block;font-size:.9rem;font-weight:600;color:var(--ink)}
.mega-item span{font-size:.78rem;color:var(--muted-2)}

.menu-toggle{display:none;width:44px;height:44px;border-radius:7px;border:1px solid var(--line)}
.menu-toggle span{display:block;width:20px;height:2px;background:var(--navy);margin:4px auto;transition:.3s}

/* mobile drawer */
.mobile-nav{position:fixed;inset:0 0 0 auto;width:min(340px,86vw);z-index:120;background:#fff;transform:translateX(100%);transition:transform .32s var(--ease);box-shadow:var(--shadow-lg);overflow-y:auto;padding:1rem 1.2rem 3rem}
.mobile-nav.open{transform:translateX(0)}
.mobile-nav .mn-head{display:flex;justify-content:space-between;align-items:center;padding-bottom:1rem;border-bottom:1px solid var(--line);margin-bottom:.5rem}
.mobile-nav .mn-close{font-size:1.6rem;color:var(--muted)}
.mobile-nav a{display:block;padding:.7rem 0;font-weight:600;border-bottom:1px solid var(--line)}
.mobile-nav .mn-group>span{display:block;padding:.8rem 0 .3rem;font-size:.72rem;letter-spacing:.1em;text-transform:uppercase;color:var(--muted-2);font-weight:700}
.mobile-nav .mn-group a{font-weight:500;color:var(--muted);padding:.5rem 0 .5rem .8rem;font-size:.92rem}
.nav-backdrop{position:fixed;inset:0;background:rgba(15,39,71,.5);z-index:110;opacity:0;visibility:hidden;transition:.3s}
.nav-backdrop.show{opacity:1;visibility:visible}

/* ---------- Footer ---------- */
.site-footer{background:var(--navy);color:#aebccd;padding-block:52px 0}
.footer-top{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:2rem;padding-bottom:36px;border-bottom:1px solid rgba(255,255,255,.1)}
.footer-brand .logo .lt b{color:#fff}
.footer-brand p{margin-top:1rem;font-size:.9rem;max-width:36ch;color:#8ea0b4}
.footer-col h5{color:#fff;font-size:.95rem;font-weight:700;margin-bottom:1rem}
.footer-col a{display:block;padding:.32rem 0;font-size:.9rem;color:#aebccd;transition:color .2s}
.footer-col a:hover{color:var(--blue-bright)}
.footer-contact li{display:flex;gap:.6rem;padding:.32rem 0;font-size:.9rem;align-items:flex-start}
.footer-contact svg{width:15px;height:15px;color:var(--blue-bright);flex:0 0 15px;margin-top:.25rem}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;gap:1rem;flex-wrap:wrap;padding:20px 0;font-size:.82rem;color:#7e90a5}
.footer-bottom a:hover{color:#fff}

/* WhatsApp FAB */
.wa-fab{position:fixed;right:20px;bottom:20px;z-index:90;width:56px;height:56px;border-radius:50%;background:var(--wa);color:#fff;display:grid;place-items:center;box-shadow:0 8px 24px rgba(37,211,102,.45);transition:transform .25s}
.wa-fab:hover{transform:scale(1.08)}
.wa-fab svg{width:30px;height:30px}

:focus-visible{outline:2px solid var(--blue);outline-offset:2px}
.skip-link{position:absolute;left:-999px;top:8px;background:var(--navy);color:#fff;padding:.6rem 1rem;border-radius:7px;z-index:200}
.skip-link:focus{left:8px}

@media (max-width:1024px){
  .main-nav,.header-search{display:none}
  .menu-toggle{display:block;margin-left:auto}
  .footer-top{grid-template-columns:1fr 1fr}
}
@media (max-width:600px){
  .topbar .tb-left span.tb-mail{display:none}
  .footer-top{grid-template-columns:1fr}
}