/* Dente Mühendislik & Elektrik — renkler DenteMuhendislikFinalLogo.png'den alınmıştır */
:root {
    --dente-navy: #011C48;
    --dente-navy-2: #022763;
    --dente-blue: #0065DD;
    --dente-blue-dark: #0052B4;
    --dente-blue-light: #3B8BF0;
    --dente-bg: #F4F7FC;
    --dente-text: #1E2A3B;
    --dente-muted: #5B6779;
    --dente-border: #E1E7F0;
    --radius: 14px;
    --shadow: 0 10px 30px rgba(1, 28, 72, .08);
    --shadow-lg: 0 20px 45px rgba(1, 28, 72, .16);

    --bs-primary: var(--dente-blue);
    --bs-primary-rgb: 0, 101, 221;
    --bs-link-color: var(--dente-blue);
    --bs-link-color-rgb: 0, 101, 221;
    --bs-link-hover-color: var(--dente-navy);
    --bs-link-hover-color-rgb: 1, 28, 72;
}

html { scroll-behavior: smooth; scroll-padding-top: 90px; }

main, .site-footer { overflow-x: clip; }

body {
    font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
    color: var(--dente-text);
    background: #fff;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Montserrat', sans-serif;
    font-weight: 700;
    color: var(--dente-navy);
    letter-spacing: -.01em;
}

h2 { font-size: clamp(1.6rem, 2.8vw, 2.25rem); margin-bottom: 1rem; }

a { text-decoration: none; }

/* ---------- Butonlar ---------- */
.btn { font-weight: 600; border-radius: 10px; padding: .65rem 1.4rem; }
.btn-lg { padding: .85rem 1.8rem; font-size: 1rem; }

.btn-dente {
    background: var(--dente-blue);
    border: 1px solid var(--dente-blue);
    color: #fff;
}
.btn-dente:hover, .btn-dente:focus-visible {
    background: var(--dente-blue-dark);
    border-color: var(--dente-blue-dark);
    color: #fff;
    transform: translateY(-1px);
    box-shadow: 0 8px 20px rgba(0, 101, 221, .3);
}
.btn-outline-dente {
    border: 1.5px solid var(--dente-blue);
    color: var(--dente-blue);
}
.btn-outline-dente:hover { background: var(--dente-blue); color: #fff; }
.btn-light { color: var(--dente-navy); }

.link-arrow { font-weight: 600; display: inline-flex; align-items: center; gap: .35rem; }
.link-arrow i { transition: transform .2s; }
.link-arrow:hover i { transform: translateX(4px); }

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: .4rem;
    font-size: .8rem;
    font-weight: 700;
    letter-spacing: .12em;
    text-transform: uppercase;
    color: var(--dente-blue);
    margin-bottom: .75rem;
}

/* ---------- Üst bar & menü ---------- */
.topbar {
    background: var(--dente-navy);
    color: rgba(255,255,255,.8);
    font-size: .85rem;
    padding: .5rem 0;
}
.topbar a { color: rgba(255,255,255,.8); }
.topbar a:hover { color: #fff; }
.topbar i { color: var(--dente-blue-light); margin-right: .3rem; }

.site-header {
    /* backdrop-filter kullanılmaz: mobil menünün (position: fixed) header içine hapsolmasına yol açar */
    background: #fff;
    border-bottom: 1px solid var(--dente-border);
    transition: box-shadow .25s;
}
.site-header.scrolled { box-shadow: 0 6px 20px rgba(1, 28, 72, .08); }
.site-header .navbar { padding: .9rem 0; transition: padding .25s; }
.site-header.scrolled .navbar { padding: .55rem 0; }

.navbar-brand img { height: 52px; width: auto; }

.navbar .nav-link {
    font-weight: 600;
    color: var(--dente-navy);
    position: relative;
}
.navbar .nav-link:hover, .navbar .nav-link.active { color: var(--dente-blue); }
.navbar .nav-link i { display: none; }

@media (min-width: 992px) {
    .site-header .navbar-nav .nav-link { padding: .5rem .9rem; }
    .navbar .nav-link::after {
        content: '';
        position: absolute;
        left: .9rem; right: .9rem; bottom: .15rem;
        height: 2px;
        background: var(--dente-blue);
        transform: scaleX(0);
        transition: transform .25s;
    }
    .navbar .nav-link:hover::after, .navbar .nav-link.active::after { transform: scaleX(1); }
}
/* ---------- Mobil menü ---------- */
.menu-toggle {
    width: 46px;
    height: 46px;
    border: 0;
    border-radius: 12px;
    background: var(--dente-navy);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
    transition: background .2s;
}
.menu-toggle span {
    display: block;
    width: 20px;
    height: 2px;
    border-radius: 2px;
    background: #fff;
}
.menu-toggle span:nth-child(2) { width: 14px; margin-left: 6px; }
.menu-toggle:hover, .menu-toggle:focus-visible { background: var(--dente-blue); }

@media (max-width: 991.98px) {
    .mobile-nav.offcanvas-lg {
        --bs-offcanvas-width: min(340px, 88vw);
        border-left: 0;
        box-shadow: -20px 0 50px rgba(1, 28, 72, .25);
    }
    .mobile-nav .offcanvas-header {
        padding: 1.1rem 1.25rem;
        border-bottom: 1px solid var(--dente-border);
    }
    .mobile-nav-logo { height: 40px; width: auto; }
    .mobile-nav-close {
        width: 40px;
        height: 40px;
        border: 0;
        border-radius: 10px;
        background: var(--dente-bg);
        color: var(--dente-navy);
        font-size: 1.1rem;
        display: grid;
        place-items: center;
    }
    .mobile-nav-close:hover { background: var(--dente-blue); color: #fff; }

    .mobile-nav .offcanvas-body {
        display: flex;
        flex-direction: column;
        padding: 1.25rem;
    }
    .mobile-nav .navbar-nav { gap: .35rem; }
    .mobile-nav .nav-link {
        display: flex;
        align-items: center;
        gap: .9rem;
        padding: .8rem .9rem;
        border-radius: 12px;
        font-size: 1rem;
        transition: background .2s, color .2s;
    }
    .mobile-nav .nav-link i {
        display: grid;
        place-items: center;
        width: 38px;
        height: 38px;
        border-radius: 10px;
        background: rgba(0, 101, 221, .08);
        color: var(--dente-blue);
        font-size: 1.05rem;
        flex-shrink: 0;
    }
    .mobile-nav .nav-link::after {
        content: '\F285'; /* bi-chevron-right */
        font-family: 'bootstrap-icons';
        margin-left: auto;
        font-size: .8rem;
        color: #A3AEC0;
    }
    .mobile-nav .nav-link:hover { background: var(--dente-bg); }
    .mobile-nav .nav-link.active { background: var(--dente-navy); color: #fff; }
    .mobile-nav .nav-link.active i { background: var(--dente-blue); color: #fff; }
    .mobile-nav .nav-link.active::after { color: rgba(255,255,255,.6); }

    .mobile-nav-footer {
        margin-top: auto;
        padding-top: 1.5rem;
        border-top: 1px solid var(--dente-border);
    }
    .mobile-nav-quick { display: grid; grid-template-columns: 1fr 1fr; gap: .6rem; margin-bottom: 1.25rem; }
    .mobile-nav-quick a {
        display: flex;
        align-items: center;
        justify-content: center;
        gap: .45rem;
        padding: .7rem;
        border-radius: 10px;
        border: 1.5px solid var(--dente-border);
        color: var(--dente-navy);
        font-weight: 600;
        font-size: .9rem;
    }
    .mobile-nav-quick a:hover { border-color: var(--dente-blue); color: var(--dente-blue); }
    .mobile-nav-quick .bi-whatsapp { color: #25D366; }
    .mobile-nav-info { margin: 0; font-size: .85rem; color: var(--dente-muted); }
    .mobile-nav-info li { display: flex; gap: .6rem; margin-bottom: .5rem; }
    .mobile-nav-info i { color: var(--dente-blue); }
    .mobile-nav-info a { color: var(--dente-muted); }

    .offcanvas-backdrop.show { opacity: .55; background: var(--dente-navy); }
}

/* ---------- Hero ---------- */
.hero {
    position: relative;
    background: var(--dente-navy);
    color: #fff;
    padding: clamp(5rem, 11vw, 9rem) 0;
    overflow: hidden;
}
.hero-bg {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center right;
}
.hero-bg::after {
    content: '';
    position: absolute;
    inset: 0;
    background:
        linear-gradient(90deg, rgba(1,28,72,.97) 0%, rgba(1,28,72,.88) 45%, rgba(1,28,72,.45) 100%),
        repeating-linear-gradient(0deg, rgba(0,101,221,.07) 0 1px, transparent 1px 40px),
        repeating-linear-gradient(90deg, rgba(0,101,221,.07) 0 1px, transparent 1px 40px);
}
.hero h1 {
    color: #fff;
    font-size: clamp(2.1rem, 5vw, 3.6rem);
    font-weight: 800;
    line-height: 1.12;
    margin-bottom: 1.25rem;
}
.hero .lead { color: rgba(255,255,255,.82); font-size: 1.15rem; max-width: 600px; }
.hero .eyebrow {
    color: #fff;
    background: rgba(0,101,221,.35);
    border: 1px solid rgba(59,139,240,.5);
    padding: .4rem .9rem;
    border-radius: 50px;
    letter-spacing: .06em;
    text-transform: none;
    font-size: .88rem;
    margin-bottom: 1.5rem;
}
.hero .eyebrow i { color: #FFC83D; }

/* ---------- Güven şeridi ---------- */
.trust-strip {
    position: relative;
    margin-top: -1px;
    background: var(--dente-blue);
    color: #fff;
}
.trust-item {
    display: flex;
    align-items: center;
    gap: .85rem;
    padding: 1.4rem 1.25rem;
    font-weight: 600;
    font-size: .95rem;
    border-right: 1px solid rgba(255,255,255,.18);
}
.trust-item:last-child { border-right: 0; }
.trust-item i { font-size: 1.75rem; flex-shrink: 0; }
@media (max-width: 991.98px) {
    .trust-item { font-size: .85rem; border-bottom: 1px solid rgba(255,255,255,.18); }
    .trust-item:nth-child(2n) { border-right: 0; }
}

/* ---------- Bölümler ---------- */
.section { padding: clamp(4rem, 8vw, 6.5rem) 0; }
.section-light { background: var(--dente-bg); }
.section-navy { background: var(--dente-navy); color: #fff; }
.section-head { max-width: 680px; margin: 0 auto 3rem; }
.section-head p { color: var(--dente-muted); }

/* ---------- Kartlar ---------- */
.service-icon {
    width: 58px;
    height: 58px;
    border-radius: 14px;
    display: grid;
    place-items: center;
    background: rgba(0,101,221,.1);
    color: var(--dente-blue);
    font-size: 1.6rem;
    flex-shrink: 0;
    transition: background .25s, color .25s;
}

.service-card, .mission-card, .feature-box {
    height: 100%;
    background: #fff;
    border: 1px solid var(--dente-border);
    border-radius: var(--radius);
    padding: 2rem;
    transition: transform .25s, box-shadow .25s, border-color .25s;
}
.service-card:hover, .feature-box:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}
.service-card:hover .service-icon { background: var(--dente-blue); color: #fff; }
.service-card h3, .mission-card h3 { font-size: 1.25rem; margin: 1.25rem 0 .75rem; }
.service-card p, .mission-card p, .feature-box p { color: var(--dente-muted); }

.feature-box { text-align: center; }
.feature-box i { font-size: 2.2rem; color: var(--dente-blue); }
.feature-box h3 { font-size: 1.1rem; margin: 1rem 0 .5rem; }

.mission-card { border-left: 4px solid var(--dente-blue); }

.value-item i { font-size: 2.6rem; color: var(--dente-blue-light); }
.value-item h3 { color: #fff; font-size: 1.2rem; margin: 1rem 0 .5rem; }
.value-item p { color: rgba(255,255,255,.7); margin: 0; }

/* ---------- Görsel çerçeve ---------- */
.image-frame { position: relative; }
.image-frame img {
    width: 100%;
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    aspect-ratio: 4 / 3;
    object-fit: cover;
}
.image-frame::before {
    content: '';
    position: absolute;
    inset: 1.25rem -1.25rem -1.25rem 1.25rem;
    border: 2px solid var(--dente-blue);
    border-radius: var(--radius);
    z-index: -1;
}
.image-badge {
    position: absolute;
    left: -1rem;
    bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: .8rem;
    background: var(--dente-navy);
    color: #fff;
    padding: 1rem 1.25rem;
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
}
.image-badge i { font-size: 1.8rem; color: #FFC83D; }
.image-badge strong { display: block; font-family: 'Montserrat', sans-serif; font-size: 1.1rem; }
.image-badge span { font-size: .85rem; color: rgba(255,255,255,.75); }
@media (max-width: 575.98px) {
    .image-badge { left: .75rem; }
    .image-frame::before { inset: .75rem -.5rem -.75rem .75rem; }
}

.check-list { list-style: none; padding: 0; margin: 1.5rem 0 0; }
.check-list li {
    display: flex;
    gap: .7rem;
    align-items: flex-start;
    padding: .45rem 0;
    font-weight: 500;
}
.check-list i { color: var(--dente-blue); margin-top: .1rem; }
@media (min-width: 768px) {
    .check-list.two-col { display: grid; grid-template-columns: 1fr 1fr; column-gap: 1.5rem; }
}

/* ---------- İş kartları ---------- */
.work-card {
    display: block;
    height: 100%;
    background: #fff;
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--dente-border);
    transition: transform .25s, box-shadow .25s;
    color: inherit;
}
.work-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); color: inherit; }
.work-card img {
    width: 100%;
    aspect-ratio: 400 / 260;
    object-fit: cover;
    transition: transform .4s;
}
.work-card:hover img { transform: scale(1.04); }
.work-card-body { padding: 1.25rem 1.4rem 1.5rem; position: relative; background: #fff; }
.work-card-body h3 { font-size: 1.05rem; margin: 0; }
.work-card-lg .work-card-body h3 { font-size: 1.15rem; margin: .5rem 0 .6rem; }
.work-card-body p { color: var(--dente-muted); font-size: .95rem; margin: 0; }
.work-tag {
    font-size: .72rem;
    font-weight: 700;
    letter-spacing: .08em;
    text-transform: uppercase;
    color: var(--dente-blue);
}

.filter-bar { display: flex; flex-wrap: wrap; justify-content: center; gap: .6rem; margin-bottom: 2.5rem; }
.filter-btn {
    border: 1.5px solid var(--dente-border);
    background: #fff;
    color: var(--dente-navy);
    font-weight: 600;
    padding: .55rem 1.25rem;
    border-radius: 50px;
    transition: all .2s;
}
.filter-btn:hover { border-color: var(--dente-blue); color: var(--dente-blue); }
.filter-btn.active { background: var(--dente-blue); border-color: var(--dente-blue); color: #fff; }

/* ---------- Hizmet detay ---------- */
.service-detail { padding: 3rem 0; border-bottom: 1px solid var(--dente-border); }
.service-detail:first-child { padding-top: 0; }
.service-detail:last-child { border-bottom: 0; padding-bottom: 0; }
.service-detail p { color: var(--dente-muted); }

/* ---------- Sayfa başlığı ---------- */
.page-header {
    background:
        repeating-linear-gradient(0deg, rgba(0,101,221,.08) 0 1px, transparent 1px 40px),
        repeating-linear-gradient(90deg, rgba(0,101,221,.08) 0 1px, transparent 1px 40px),
        linear-gradient(120deg, var(--dente-navy) 0%, var(--dente-navy-2) 100%);
    color: #fff;
    padding: 4rem 0 3.5rem;
}
.page-header h1 { color: #fff; font-size: clamp(2rem, 4vw, 2.8rem); font-weight: 800; }
.page-header .lead { color: rgba(255,255,255,.78); margin: 0; }
.page-header .breadcrumb { --bs-breadcrumb-divider-color: rgba(255,255,255,.5); margin-bottom: .75rem; font-size: .9rem; }
.page-header .breadcrumb a { color: var(--dente-blue-light); }
.page-header .breadcrumb-item.active { color: rgba(255,255,255,.7); }

/* ---------- CTA ---------- */
.cta-band {
    background: linear-gradient(110deg, var(--dente-blue) 0%, var(--dente-blue-dark) 60%, var(--dente-navy-2) 100%);
    color: #fff;
    padding: 3.5rem 0;
}
.cta-band h2 { color: #fff; font-size: clamp(1.4rem, 2.4vw, 1.9rem); }
.cta-band p { color: rgba(255,255,255,.85); margin: 0; }

/* ---------- İletişim ---------- */
.contact-item { display: flex; gap: 1rem; align-items: flex-start; margin-bottom: 1.5rem; }
.contact-item h3 { font-size: 1rem; margin: .2rem 0 .25rem; }
.contact-item a, .contact-item span { color: var(--dente-muted); }
.contact-item a:hover { color: var(--dente-blue); }
.contact-item .link-arrow { color: var(--dente-blue); font-size: .9rem; }

.form-card {
    background: #fff;
    border: 1px solid var(--dente-border);
    border-radius: var(--radius);
    padding: clamp(1.5rem, 4vw, 2.5rem);
    box-shadow: var(--shadow);
}
.form-label { font-weight: 600; color: var(--dente-navy); font-size: .9rem; }
.form-control, .form-select {
    border-radius: 10px;
    padding: .75rem 1rem;
    border-color: var(--dente-border);
    background-color: var(--dente-bg);
}
.form-control:focus, .form-select:focus {
    border-color: var(--dente-blue);
    background-color: #fff;
    box-shadow: 0 0 0 .2rem rgba(0,101,221,.15);
}
.form-control.input-validation-error { border-color: #dc3545; }

.error-page { min-height: 55vh; display: flex; align-items: center; }

/* ---------- Footer ---------- */
.site-footer {
    background: var(--dente-navy);
    color: rgba(255,255,255,.72);
    padding: 4.5rem 0 0;
    font-size: .95rem;
}
.footer-logo { height: auto; max-width: 220px; }
.site-footer h6 {
    color: #fff;
    font-size: .95rem;
    text-transform: uppercase;
    letter-spacing: .08em;
    margin-bottom: 1.25rem;
}
.site-footer li { margin-bottom: .6rem; }
.site-footer a { color: rgba(255,255,255,.72); transition: color .2s; }
.site-footer a:hover { color: #fff; }
.footer-contact li { display: flex; gap: .7rem; }
.footer-contact i { color: var(--dente-blue-light); }
.footer-bottom {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: .5rem;
    border-top: 1px solid rgba(255,255,255,.12);
    margin-top: 3rem;
    padding: 1.5rem 0;
    font-size: .85rem;
    color: rgba(255,255,255,.55);
}

/* ---------- Sabit butonlar ---------- */
.whatsapp-float, .back-to-top {
    position: fixed;
    right: 1.25rem;
    width: 52px;
    height: 52px;
    border-radius: 50%;
    display: grid;
    place-items: center;
    color: #fff;
    border: 0;
    box-shadow: 0 8px 20px rgba(0,0,0,.2);
    z-index: 1030;
    transition: transform .2s, opacity .25s, visibility .25s;
}
.whatsapp-float { bottom: 1.25rem; background: #25D366; font-size: 1.6rem; }
.whatsapp-float:hover { color: #fff; transform: scale(1.08); }
.back-to-top {
    bottom: 5.25rem;
    background: var(--dente-navy);
    font-size: 1.2rem;
    opacity: 0;
    visibility: hidden;
}
.back-to-top.show { opacity: 1; visibility: visible; }
.back-to-top:hover { background: var(--dente-blue); }

/* ---------- Animasyon ---------- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .6s ease, transform .6s ease; }
.reveal.visible { opacity: 1; transform: none; }
.no-js .reveal { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    .reveal { opacity: 1; transform: none; transition: none; }
    * { transition: none !important; }
}

@media (min-width: 992px) {
    .mobile-nav { flex-grow: 1; }
    .mobile-nav .offcanvas-body { justify-content: flex-end; }
}

/* Mobil menü açıkken sabit butonları gizle */
body.menu-open .whatsapp-float, body.menu-open .back-to-top { opacity: 0; visibility: hidden; }