/* BlueTech v2 – Ortak stiller */
html { scroll-behavior: smooth; }

/**
 * Kolay metin/görsel sürükleme koruması (tam engel değil: ekran görüntüsü, kaynak, DevTools).
 * Sınıf: html.bt-content-guard — nav-include.js ekler.
 * İstisna: input, textarea, select, .allow-select içinde seçim açık.
 */
html.bt-content-guard body {
    -webkit-user-select: none;
    -moz-user-select: none;
    user-select: none;
    -webkit-touch-callout: none;
}
html.bt-content-guard input,
html.bt-content-guard textarea,
html.bt-content-guard select,
html.bt-content-guard [contenteditable="true"] {
    -webkit-user-select: text;
    -moz-user-select: text;
    user-select: text;
    -webkit-touch-callout: default;
}
/* E-posta / telefon / WhatsApp linkleri — kopyalanabilsin; mobilde tel: arama açar */
html.bt-content-guard a[href^="mailto:"],
html.bt-content-guard a[href^="tel:"],
html.bt-content-guard a[href*="wa.me/"] {
    -webkit-user-select: text;
    -moz-user-select: text;
    user-select: text;
    -webkit-touch-callout: default;
}
/* İletişim satır etiketleri (Merkez:, GSM: …) — seçilmesin */
html.bt-content-guard .bt-no-select {
    -webkit-user-select: none;
    -moz-user-select: none;
    user-select: none;
}
/* İletişim vb.: kutu içindeki tüm metin seçilebilir */
html.bt-content-guard .allow-select,
html.bt-content-guard .allow-select * {
    -webkit-user-select: text;
    -moz-user-select: text;
    user-select: text;
    -webkit-touch-callout: default;
}
html.bt-content-guard img {
    -webkit-user-drag: none;
    -khtml-user-drag: none;
    -moz-user-drag: none;
    -o-user-drag: none;
    user-drag: none;
}

/**
 * Geniş görseller: yalnızca max-height ile sınırlandığında genişlik taşması (yatay kaydırma)
 * oluşmasın diye kart/img ile birlikte kullanın: max-h-* object-contain bt-img-no-overflow
 */
.bt-img-no-overflow {
    max-width: 100%;
    height: auto;
}
.nav-glass {
    background: rgba(255, 255, 255, 0.97);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
    box-shadow: 0 1px 0 rgba(0, 0, 0, 0.04), 0 4px 24px -8px rgba(15, 23, 42, 0.08);
}
/* Referans mockup: kelime işareti */
.nav-wordmark {
    font-style: italic;
    letter-spacing: 0.02em;
    line-height: 1;
}

/* Üst menü: tek satır; taşmada yatay kaydır (açılır menüler üst satırda overflow-visible) */
.nav-primary-row {
    display: flex;
    flex-wrap: nowrap;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    min-width: min-content;
}
@media (min-width: 1280px) {
    .nav-primary-row { gap: 1rem; }
}
@media (min-width: 1536px) {
    .nav-primary-row { gap: 1.25rem; }
}
/* Orta sütun: grid içinde daralabilsin; overflow-x menüde açılır kutuları kestiği için kullanılmıyor */
.nav-primary-outer {
    min-width: 0;
}
.nav-transparent { background: transparent; }
.hero-glow {
    background: radial-gradient(ellipse 80% 50% at 50% 0%, rgba(30, 58, 138, 0.12), transparent 60%),
                radial-gradient(ellipse 60% 40% at 80% 20%, rgba(23, 37, 84, 0.08), transparent 50%);
}
.float-animate {
    animation: float 5s ease-in-out infinite;
}
@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-12px); }
}
.btn-gradient {
    background: linear-gradient(135deg, #1e3a8a 0%, #172554 100%);
    transition: opacity 0.2s, box-shadow 0.2s;
}
.btn-gradient:hover { opacity: 0.95; box-shadow: 0 10px 25px -5px rgba(30, 58, 138, 0.45); }
.card-hover {
    transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.card-hover:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 40px -12px rgba(0, 0, 0, 0.15);
}

/* References logo slider */
.references-logo-slider {
    position: relative;
    overflow: hidden;
    cursor: grab;
    user-select: none;
}
.references-logo-track {
    display: flex;
    align-items: center;
    gap: 12px;
    width: max-content;
    will-change: transform;
}
.references-logo-slider.is-dragging { cursor: grabbing; }
.references-logo-card {
    width: 170px;
    height: 78px;
    background: #e5e7eb;
}
.references-logo-img {
    width: auto;
    max-width: 126px;
    height: auto;
    max-height: 34px;
    object-fit: contain;
    /* Tek ton monokrom: tüm logoları benzer yoğunlukta gösterir */
    filter: grayscale(100%) brightness(0) opacity(0.62);
    opacity: 1;
    transition: filter 0.25s ease, opacity 0.25s ease, transform 0.25s ease;
}
/* AKSA logosu koyu dolgu içerdiği için ayrı monokrom dengesi */
.references-logo-img--aksa {
    filter: grayscale(100%) brightness(0.92) contrast(0.88) opacity(0.72);
}
/* Acropol logosu için dengeli monokrom */
.references-logo-img--acropol {
    filter: grayscale(100%) brightness(0.9) contrast(0.9) opacity(0.74);
}
.references-logo-card:hover .references-logo-img {
    filter: grayscale(0%) brightness(1) contrast(1)
            drop-shadow(0 0 0.7px rgba(17, 24, 39, 0.7));
    opacity: 1;
    transform: scale(1.03);
}