/* =====================================================================
   Hüsrev Mühendislik – Modern Engineering Theme
   ★ BUILD: HM-2026-04-27-NOSCROLL ★
   Renk paleti: derin lacivert + elektrik mavi + amber accent
   Font: Logo/başlık görselleri Ethnocentric (PNG/SVG); body için Rajdhani+Inter
   ===================================================================== */

/* ---------- Tokens ---------- */
:root {
    --bg-0: #0a1020;
    --bg-1: #0d1729;
    --bg-2: #111e34;
    --bg-3: #16263f;
    --line: rgba(255, 255, 255, 0.08);
    --line-strong: rgba(255, 255, 255, 0.15);

    --txt-0: #f4f7fb;
    --txt-1: #c9d3e3;
    --txt-2: #8a98b3;
    --txt-3: #5d6a85;

    --primary: #1e6bff;
    --primary-600: #2f7bff;
    --primary-glow: rgba(30, 107, 255, 0.45);
    --accent: #ffb422;
    --accent-2: #00e5ff;
    --success: #28d17c;
    --danger: #ff4d4f;

    --grad-hero: radial-gradient(ellipse at 25% 20%, rgba(30,107,255,0.30) 0%, transparent 55%),
                 radial-gradient(ellipse at 80% 70%, rgba(0,229,255,0.18) 0%, transparent 55%),
                 linear-gradient(180deg, #07101e 0%, #0a1020 100%);
    --grad-card: linear-gradient(160deg, rgba(255,255,255,0.04) 0%, rgba(255,255,255,0.01) 100%);
    --grad-accent: linear-gradient(90deg, var(--primary) 0%, var(--accent-2) 100%);

    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --radius-xl: 28px;

    --shadow-md: 0 10px 30px rgba(0, 0, 0, 0.35);
    --shadow-lg: 0 25px 60px rgba(0, 0, 0, 0.45);
    --shadow-glow: 0 0 40px var(--primary-glow);

    --container: 1240px;
    --header-h: 84px;

    --font-display: 'Rajdhani', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

/* ---------- Reset ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

html {
    overflow-x: hidden;
}

body {
    margin: 0;
    background: var(--bg-0);
    color: var(--txt-1);
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.65;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--accent-2); text-decoration: none; transition: color .2s; }
a:hover { color: var(--accent); }
button { font-family: inherit; cursor: pointer; }

h1, h2, h3, h4, h5 {
    font-family: var(--font-display);
    color: var(--txt-0);
    font-weight: 700;
    letter-spacing: -0.01em;
    line-height: 1.15;
    margin: 0 0 .5em;
}
h1 { font-size: clamp(2.4rem, 5vw, 4rem); }
h2 { font-size: clamp(1.8rem, 3.5vw, 2.6rem); }
h3 { font-size: clamp(1.3rem, 2.4vw, 1.6rem); }
h4 { font-size: 1.1rem; }
p  { margin: 0 0 1rem; }

/* ---------- Layout ---------- */
.container {
    width: 100%;
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 24px;
}

.section {
    padding: clamp(60px, 8vw, 110px) 0;
    position: relative;
}

.section--alt { background: var(--bg-1); }

.section-head {
    text-align: center;
    max-width: 760px;
    margin: 0 auto 56px;
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-display);
    font-size: .8rem;
    font-weight: 600;
    letter-spacing: .25em;
    text-transform: uppercase;
    color: var(--accent-2);
    background: rgba(0, 229, 255, 0.08);
    border: 1px solid rgba(0, 229, 255, 0.25);
    padding: 8px 16px;
    border-radius: 999px;
    margin-bottom: 18px;
}
.eyebrow::before {
    content: "";
    width: 6px; height: 6px;
    background: var(--accent-2);
    border-radius: 50%;
    box-shadow: 0 0 8px var(--accent-2);
}

.section-head h2 { color: var(--txt-0); }
.section-head p { color: var(--txt-2); font-size: 1.05rem; }

/* ---------- Top Header ---------- */
.topbar {
    background: #06101e;
    color: var(--txt-2);
    font-size: .82rem;
    border-bottom: 1px solid var(--line);
}
.topbar-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 0;
    flex-wrap: wrap;
    gap: 12px;
}
.topbar a { color: var(--txt-1); }
.topbar a:hover { color: var(--accent); }
.topbar-info { display: flex; gap: 22px; flex-wrap: wrap; }
.topbar-info span { display: inline-flex; align-items: center; gap: 8px; }
.topbar-info svg { width: 14px; height: 14px; color: var(--accent-2); }
.topbar-social { display: flex; gap: 14px; }
.topbar-social a { display: inline-flex; align-items: center; }
.topbar-social svg { width: 16px; height: 16px; }

/* ---------- Header / Navigation ---------- */
.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(7, 16, 30, 0.85);
    backdrop-filter: saturate(180%) blur(18px);
    -webkit-backdrop-filter: saturate(180%) blur(18px);
    border-bottom: 1px solid var(--line);
}
.site-header.scrolled {
    background: rgba(5, 13, 24, 0.95);
    box-shadow: 0 6px 24px rgba(0, 0, 0, 0.4);
}
.nav-inner {
    height: var(--header-h);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 28px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: var(--txt-0);
    flex-shrink: 0;
}
.brand-img {
    height: 40px;
    width: auto;
    max-width: 54px;
    object-fit: contain;
    display: block;
    flex-shrink: 0;
}
.footer-brand .brand-img {
    height: 36px;
    max-width: 48px;
}
.brand-name {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1.05rem;
    letter-spacing: .04em;
    line-height: 1;
    color: var(--txt-0);
    white-space: nowrap;
}
.brand-name small {
    display: block;
    font-size: .60rem;
    font-weight: 500;
    color: var(--txt-2);
    letter-spacing: .32em;
    text-transform: uppercase;
    margin-top: 5px;
}

.nav {
    display: flex;
    gap: 6px;
    align-items: center;
}
.nav a {
    display: block;
    padding: 10px 16px;
    color: var(--txt-1);
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 1rem;
    letter-spacing: .03em;
    border-radius: 8px;
    position: relative;
    transition: all .2s ease;
}
.nav a::after {
    content: "";
    position: absolute;
    left: 16px; right: 16px;
    bottom: 4px;
    height: 2px;
    background: var(--accent);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform .25s ease;
}
.nav a:hover { color: var(--txt-0); }
.nav a:hover::after,
.nav a.is-active::after { transform: scaleX(1); }
.nav a.is-active { color: var(--txt-0); }

.nav-cta {
    background: var(--primary) !important;
    color: #fff !important;
    padding: 9px 20px !important;
    border-radius: 4px !important;
    border: 2px solid var(--primary) !important;
    font-weight: 700 !important;
    letter-spacing: .05em !important;
    text-transform: uppercase !important;
    font-size: .82rem !important;
    transition: background .18s ease, border-color .18s ease !important;
}
.nav-cta:hover {
    background: #1458d4 !important;
    border-color: #1458d4 !important;
    transform: none !important;
    box-shadow: none !important;
}
.nav-cta::after { display: none !important; }

.nav-toggle {
    display: none;
    width: 46px; height: 46px;
    border: 1px solid var(--line-strong);
    background: transparent;
    border-radius: 10px;
    color: var(--txt-0);
    align-items: center;
    justify-content: center;
    cursor: pointer;
    padding: 0;
    flex-direction: column;
    gap: 5px;
    transition: border-color .2s ease, background .2s ease;
    position: relative;
    z-index: 60;
}
.nav-toggle:hover { border-color: var(--accent); background: rgba(255,255,255,.04); }
.nav-toggle-bar {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--txt-0);
    border-radius: 2px;
    transition: transform .25s ease, opacity .2s ease;
    transform-origin: center;
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) {
    opacity: 0;
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* Karartı overlay (drawer açıldığında) */
.nav-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, .55);
    opacity: 0;
    visibility: hidden;
    transition: opacity .25s ease, visibility .25s ease;
    z-index: 40;
}
.nav-overlay.is-open { opacity: 1; visibility: visible; }

/* Tablet/mobil: hamburger drawer */
@media (max-width: 1024px) {
    .nav-toggle { display: inline-flex; }

    .nav {
        position: fixed;
        top: 0;
        right: -110%;
        bottom: 0;
        left: auto;
        width: min(86vw, 360px);
        max-width: 360px;
        height: 100vh;
        height: 100dvh;
        background: #07101e;
        border-left: 1px solid var(--line);
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        padding: 90px 22px 30px;
        overflow-y: auto;
        overflow-x: hidden;
        transform: none;
        visibility: hidden;
        pointer-events: none;
        transition: right .32s cubic-bezier(.4,0,.2,1), visibility .32s ease;
        box-shadow: -20px 0 60px rgba(0,0,0,.45);
        z-index: 55;
    }
    .nav.is-open {
        right: 0;
        visibility: visible;
        pointer-events: auto;
    }
    .nav a {
        width: 100%;
        padding: 16px 14px;
        font-size: 1.05rem;
        border-bottom: 1px solid var(--line);
        border-radius: 0;
    }
    .nav a::after { display: none; }
    .nav a.is-active {
        color: var(--accent);
        background: rgba(255, 180, 34, .06);
    }
    .nav-cta {
        width: 100%;
        text-align: center;
        margin-top: 18px;
        justify-content: center;
        display: flex !important;
        align-items: center;
        gap: 8px;
    }
}

/* ---------- Hero Slider ---------- */
.hero-slider {
    position: relative;
    height: 100vh;
    min-height: 600px;
    max-height: 900px;
    overflow: hidden;
    display: flex;
    align-items: center;
}

/* Arka plan slaytları */
.slider-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}
.slider-slide {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    opacity: 0;
    transition: opacity 1.2s ease;
}
.slider-slide.is-active { opacity: 1; }
.slider-fallback {
    background: linear-gradient(135deg, #071320 0%, #0d1f3c 50%, #071d38 100%);
}
.slider-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        105deg,
        rgba(4, 12, 26, 0.88) 0%,
        rgba(4, 12, 26, 0.72) 50%,
        rgba(4, 12, 26, 0.50) 100%
    );
}

/* İçerik alanı */
.hero-slider-inner {
    position: relative;
    z-index: 2;
    width: 100%;
}

.hero-content {
    max-width: 680px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-display);
    font-size: .78rem;
    font-weight: 700;
    letter-spacing: .28em;
    text-transform: uppercase;
    color: #fff;
    background: rgba(30, 107, 255, 0.25);
    border: 1px solid rgba(30, 107, 255, 0.5);
    padding: 8px 18px;
    border-radius: 4px;
    margin-bottom: 28px;
}
.hero-badge-dot {
    width: 8px; height: 8px;
    background: var(--accent);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--accent);
    animation: pulse-dot 2s ease-in-out infinite;
}
@keyframes pulse-dot {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.4); opacity: .7; }
}

.hero-title {
    font-size: clamp(2.4rem, 5.5vw, 4.2rem);
    line-height: 1.08;
    color: #fff;
    font-weight: 800;
    letter-spacing: -0.02em;
    margin: 0 0 24px;
    text-shadow: 0 2px 20px rgba(0,0,0,0.4);
}
.hero-title-accent {
    color: var(--accent);
}

.hero-lead {
    font-size: 1.08rem;
    color: rgba(255,255,255,0.82);
    line-height: 1.75;
    margin-bottom: 36px;
    max-width: 580px;
}

.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 48px; }

.btn-outline-light {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 13px 26px;
    border: 2px solid rgba(255,255,255,0.40);
    border-radius: 4px;
    color: #fff;
    font-family: var(--font-display);
    font-weight: 700;
    font-size: .85rem;
    letter-spacing: .07em;
    text-transform: uppercase;
    transition: border-color .18s ease, background .18s ease;
    background: transparent;
}
.btn-outline-light:hover {
    background: rgba(255,255,255,0.08);
    border-color: rgba(255,255,255,0.75);
    color: #fff;
}

/* Hero istatistikler */
.hero-stats {
    display: flex;
    align-items: center;
    gap: 24px;
    flex-wrap: wrap;
}
.hero-stat {
    display: flex;
    flex-direction: column;
    gap: 2px;
}
.hero-stat strong {
    font-family: var(--font-display);
    font-size: 1.6rem;
    font-weight: 800;
    color: #fff;
    line-height: 1;
}
.hero-stat span {
    font-size: .78rem;
    color: rgba(255,255,255,0.55);
    text-transform: uppercase;
    letter-spacing: .12em;
}
.hero-stat-divider {
    width: 1px;
    height: 36px;
    background: rgba(255,255,255,0.2);
}

/* Slider kontroller */
.slider-controls {
    position: absolute;
    bottom: 90px;
    right: 40px;
    z-index: 5;
    display: flex;
    align-items: center;
    gap: 14px;
}
.slider-btn {
    width: 42px; height: 42px;
    border-radius: 50%;
    background: rgba(255,255,255,0.1);
    border: 1px solid rgba(255,255,255,0.25);
    color: #fff;
    display: grid;
    place-items: center;
    cursor: pointer;
    transition: all .2s ease;
}
.slider-btn:hover { background: var(--primary); border-color: var(--primary); }
.slider-btn svg { width: 20px; height: 20px; }
.slider-dots { display: flex; gap: 8px; align-items: center; }
.slider-dot {
    width: 8px; height: 8px;
    border-radius: 50%;
    background: rgba(255,255,255,0.35);
    border: none;
    cursor: pointer;
    padding: 0;
    transition: all .3s ease;
}
.slider-dot.is-active {
    background: var(--accent);
    width: 24px;
    border-radius: 4px;
    box-shadow: 0 0 10px var(--accent);
}

/* Aşağı ok */
.slider-scroll-down {
    position: absolute;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 5;
    width: 44px; height: 44px;
    border-radius: 50%;
    border: 1.5px solid rgba(255,255,255,0.3);
    color: rgba(255,255,255,0.7);
    display: grid;
    place-items: center;
    animation: bounce-down 2s ease-in-out infinite;
    transition: all .2s ease;
}
.slider-scroll-down:hover { border-color: var(--accent); color: var(--accent); }
.slider-scroll-down svg { width: 22px; height: 22px; }
@keyframes bounce-down {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(8px); }
}

@media (max-width: 768px) {
    .hero-slider { max-height: none; padding-bottom: 40px; min-height: 580px; }

    /* Hero CTA butonları mobilde tam genişlik, alt alta, ortalı */
    .hero-cta {
        display: flex !important;
        flex-direction: column !important;
        align-items: stretch !important;
        gap: 10px !important;
        margin: 0 0 28px !important;
        width: 100%;
    }
    .hero-cta .btn,
    .hero-cta .btn-outline-light,
    .hero-cta a {
        width: 100% !important;
        justify-content: center !important;
        text-align: center;
    }

    /* Slider kontrolleri (sağ/sol oklar + dotlar) mobilde tamamen gizli */
    .slider-controls { display: none !important; }

    /* Aşağı kaydır oku mobilde gizli */
    .slider-scroll-down { display: none !important; }
}

.hero-orb {
    position: absolute;
    inset: 50% auto auto 50%;
    width: 220px; height: 220px;
    transform: translate(-50%, -50%);
    border-radius: 50%;
    background: radial-gradient(circle, var(--primary) 0%, transparent 70%);
    filter: blur(50px);
    pointer-events: none;
    z-index: -1;
}

@media (max-width: 900px) {
    .hero-inner { grid-template-columns: 1fr; gap: 40px; }
    .hero-visual { max-width: 460px; margin: 0 auto; }
}

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 13px 28px;
    border-radius: 4px;
    font-family: var(--font-display);
    font-weight: 700;
    font-size: .95rem;
    letter-spacing: .06em;
    text-transform: uppercase;
    border: 2px solid transparent;
    cursor: pointer;
    transition: background .18s ease, color .18s ease, border-color .18s ease, box-shadow .18s ease;
    text-decoration: none;
    line-height: 1;
    position: relative;
}
.btn svg { width: 17px; height: 17px; flex-shrink: 0; }

/* Ana buton — düz mavi, sert köşe */
.btn-primary {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}
.btn-primary:hover {
    background: #1458d4;
    border-color: #1458d4;
    color: #fff;
    box-shadow: 0 4px 18px rgba(30,107,255,.30);
}

/* Hayalet buton — sadece çerçeve */
.btn-ghost {
    background: transparent;
    color: var(--txt-0);
    border-color: rgba(255,255,255,0.30);
}
.btn-ghost:hover {
    background: rgba(255,255,255,0.06);
    border-color: rgba(255,255,255,0.60);
    color: var(--txt-0);
}

/* Aksan buton — sarı/amber */
.btn-accent {
    background: var(--accent);
    color: #0d1117;
    border-color: var(--accent);
    font-weight: 800;
}
.btn-accent:hover {
    background: #e8a500;
    border-color: #e8a500;
    color: #0d1117;
}

.btn-block { display: flex; width: 100%; }

/* ---------- Service Cards ---------- */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(290px, 1fr));
    gap: 24px;
}
.service-card {
    position: relative;
    background: var(--grad-card);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    padding: 28px;
    overflow: hidden;
    transition: transform .35s, border-color .3s, box-shadow .3s;
    text-decoration: none;
    color: inherit;
    display: block;
    isolation: isolate;
}
.service-card::before {
    content: "";
    position: absolute;
    inset: -1px;
    background: linear-gradient(135deg, transparent 60%, var(--primary) 100%);
    opacity: 0;
    transition: opacity .3s;
    z-index: -1;
    border-radius: var(--radius-lg);
}
.service-card:hover { transform: translateY(-6px); border-color: var(--accent-2); box-shadow: var(--shadow-md); }
.service-card:hover::before { opacity: .15; }

.service-icon {
    width: 64px; height: 64px;
    display: grid; place-items: center;
    border-radius: 14px;
    background: linear-gradient(135deg, rgba(30,107,255,0.20), rgba(0,229,255,0.15));
    border: 1px solid rgba(30,107,255,0.3);
    margin-bottom: 18px;
    color: var(--accent-2);
    overflow: hidden;
    flex-shrink: 0;
}
.service-icon svg { width: 32px; height: 32px; }
.service-icon img {
    width: 40px;
    height: 40px;
    object-fit: contain;
    display: block;
}

.service-card h3 { color: var(--txt-0); margin-bottom: 10px; font-size: 1.15rem; }
.service-card p { color: var(--txt-2); font-size: .92rem; margin: 0; }
.service-card .arrow {
    margin-top: 20px;
    display: inline-flex; align-items: center; gap: 8px;
    color: var(--accent-2);
    font-family: var(--font-display);
    font-weight: 600;
    font-size: .9rem;
    text-transform: uppercase;
    letter-spacing: .15em;
    transition: gap .25s;
}
.service-card:hover .arrow { gap: 14px; }
.service-card .arrow svg { width: 16px; height: 16px; }

/* ---------- Stats ---------- */
.stats {
    background: var(--bg-1);
    background-image: linear-gradient(180deg, var(--bg-1) 0%, var(--bg-0) 100%);
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
}
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.stat-card {
    text-align: center;
    padding: 32px 16px;
    border-right: 1px solid var(--line);
}
.stat-card:last-child { border-right: none; }
.stat-icon {
    width: 56px; height: 56px;
    margin: 0 auto 18px;
    display: grid; place-items: center;
    border-radius: 50%;
    background: rgba(255, 180, 34, 0.12);
    color: var(--accent);
}
.stat-icon svg { width: 28px; height: 28px; }
.stat-value {
    font-family: var(--font-display);
    font-size: clamp(2.2rem, 4vw, 3.2rem);
    font-weight: 700;
    color: var(--txt-0);
    line-height: 1;
    letter-spacing: -.02em;
}
.stat-value .suffix { color: var(--accent); }
.stat-label {
    margin-top: 10px;
    font-size: .9rem;
    color: var(--txt-2);
    text-transform: uppercase;
    letter-spacing: .15em;
    font-family: var(--font-display);
    font-weight: 600;
}
@media (max-width: 720px) {
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .stat-card { border-right: none; border-bottom: 1px solid var(--line); }
}

/* ---------- Project Cards ---------- */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 28px;
}
.project-card {
    background: var(--bg-2);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: transform .35s, border-color .3s;
    text-decoration: none;
    color: inherit;
}
.project-card:hover { transform: translateY(-6px); border-color: var(--accent-2); }
.project-card-image {
    aspect-ratio: 16/10;
    background: linear-gradient(135deg, var(--bg-3), var(--bg-2));
    background-size: cover;
    background-position: center;
    position: relative;
    overflow: hidden;
}
.project-card-image::after {
    content: "";
    position: absolute; inset: 0;
    background: linear-gradient(180deg, transparent 30%, rgba(0,0,0,.7) 100%);
}
.project-card-image .badge {
    position: absolute;
    top: 14px; left: 14px;
    background: var(--accent);
    color: #1a1300;
    font-family: var(--font-display);
    font-size: .75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .1em;
    padding: 6px 12px;
    border-radius: 999px;
    z-index: 2;
}
.project-card-body { padding: 24px; }
.project-card-body h3 { font-size: 1.15rem; color: var(--txt-0); margin-bottom: 8px; }
.project-card-meta {
    display: flex; gap: 18px;
    font-size: .85rem;
    color: var(--txt-2);
    margin-bottom: 12px;
}
.project-card-meta span { display: inline-flex; align-items: center; gap: 6px; }
.project-card-meta svg { width: 14px; height: 14px; color: var(--accent-2); }

/* ---------- About ---------- */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}
.about-visual {
    position: relative;
    aspect-ratio: 5/6;
    background: linear-gradient(160deg, var(--bg-2), var(--bg-1));
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    border: 1px solid var(--line);
    border-radius: var(--radius-xl);
    padding: 32px;
    overflow: hidden;
}
.about-visual:not(.has-bg)::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(0,229,255,0.06) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0,229,255,0.06) 1px, transparent 1px);
    background-size: 40px 40px;
}
.about-visual:not(.has-bg)::after {
    content: "";
    position: absolute;
    width: 280px; height: 280px;
    bottom: -100px; right: -100px;
    background: radial-gradient(circle, var(--primary) 0%, transparent 70%);
    filter: blur(60px);
    opacity: .5;
}
.about-visual.has-bg .about-visual-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(7,16,30,0.35) 0%, rgba(7,16,30,0.85) 100%);
}
.about-visual-content {
    position: relative;
    z-index: 1;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}
.about-visual-badge {
    display: inline-flex;
    gap: 10px;
    align-items: center;
    color: var(--accent-2);
    font-family: var(--font-display);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .2em;
    font-size: .8rem;
    align-self: flex-start;
    background: rgba(7,16,30,.55);
    padding: 8px 14px;
    border-radius: 999px;
    border: 1px solid rgba(0,229,255,.25);
    backdrop-filter: blur(6px);
}
.about-visual-badge .dot {
    width: 8px;
    height: 8px;
    background: var(--accent-2);
    border-radius: 50%;
    box-shadow: 0 0 12px var(--accent-2);
}
.about-big-value {
    font-family: var(--font-display);
    font-size: 5rem;
    font-weight: 700;
    color: var(--txt-0);
    line-height: 1;
}
.about-big-value::first-letter,
.about-big-value { color: var(--txt-0); }
.about-big-label {
    color: var(--txt-2);
    text-transform: uppercase;
    letter-spacing: .18em;
    font-size: .85rem;
    margin-top: 8px;
}
.about-feature-list { list-style: none; padding: 0; margin: 28px 0 36px; display: grid; gap: 14px; }
.about-feature-list li {
    display: flex; align-items: flex-start; gap: 14px;
    color: var(--txt-1);
}
.about-feature-list svg {
    width: 22px; height: 22px;
    color: var(--accent);
    flex-shrink: 0;
    margin-top: 2px;
}
@media (max-width: 900px) {
    .about-grid { grid-template-columns: 1fr; gap: 40px; }
}

/* ---------- CTA Banner ---------- */
.cta-banner {
    background:
        radial-gradient(ellipse at top left, rgba(30,107,255,0.4), transparent 60%),
        radial-gradient(ellipse at bottom right, rgba(255,180,34,0.25), transparent 60%),
        var(--bg-2);
    border: 1px solid var(--line-strong);
    border-radius: var(--radius-xl);
    padding: clamp(40px, 6vw, 70px);
    text-align: center;
    position: relative;
    overflow: hidden;
}
.cta-banner h2 { color: var(--txt-0); margin-bottom: 12px; }
.cta-banner p { color: var(--txt-1); max-width: 580px; margin: 0 auto 28px; font-size: 1.05rem; }

/* ---------- Forms ---------- */
.form-group { margin-bottom: 20px; }
.form-label {
    display: block;
    margin-bottom: 8px;
    color: var(--txt-1);
    font-family: var(--font-display);
    font-weight: 600;
    font-size: .9rem;
    letter-spacing: .05em;
}
.form-control {
    width: 100%;
    background: rgba(255,255,255,0.04);
    border: 1px solid var(--line-strong);
    color: var(--txt-0);
    padding: 14px 16px;
    border-radius: var(--radius-md);
    font-family: var(--font-body);
    font-size: 1rem;
    transition: border-color .2s, box-shadow .2s, background .2s;
}
.form-control:focus {
    outline: none;
    border-color: var(--accent-2);
    background: rgba(0, 229, 255, 0.05);
    box-shadow: 0 0 0 4px rgba(0, 229, 255, 0.15);
}
.form-control::placeholder { color: var(--txt-3); }
textarea.form-control { resize: vertical; min-height: 130px; }
.form-grid-2 {
    display: grid; grid-template-columns: 1fr 1fr; gap: 20px;
}
@media (max-width: 600px) { .form-grid-2 { grid-template-columns: 1fr; } }

.form-error { color: var(--danger); font-size: .85rem; margin-top: 6px; display: block; }
.alert {
    padding: 14px 18px;
    border-radius: var(--radius-md);
    font-size: .95rem;
    margin-bottom: 24px;
    border: 1px solid;
}
.alert-success { background: rgba(40, 209, 124, 0.12); border-color: rgba(40, 209, 124, 0.4); color: var(--success); }
.alert-error   { background: rgba(255, 77, 79, 0.12); border-color: rgba(255, 77, 79, 0.4); color: var(--danger); }

/* ---------- Footer ---------- */
.footer {
    background: #050b16;
    border-top: 1px solid var(--line);
    color: var(--txt-2);
    padding: 70px 0 28px;
    margin-top: 80px;
    position: relative;
}
.footer::before {
    content: "";
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 1px;
    background: rgba(30,107,255,.35);
}
.footer-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr 1.1fr;
    gap: 40px;
    margin-bottom: 40px;
}
.footer h4 {
    color: var(--txt-0);
    text-transform: uppercase;
    letter-spacing: .1em;
    font-size: .9rem;
    margin-bottom: 18px;
}
.footer ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.footer ul a { color: var(--txt-1); font-size: .92rem; transition: color .2s, padding .2s; }
.footer ul a:hover { color: var(--accent); padding-left: 6px; }
.footer-about p { font-size: .92rem; line-height: 1.7; color: var(--txt-2); }
.footer-contact li { display: flex; gap: 12px; align-items: flex-start; color: var(--txt-1); }
.footer-contact svg { width: 18px; height: 18px; color: var(--accent-2); flex-shrink: 0; margin-top: 3px; }

.footer-bottom {
    padding-top: 24px;
    border-top: 1px solid var(--line);
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
    font-size: .85rem;
    color: var(--txt-3);
}
.footer-bottom a { color: var(--txt-2); }

@media (max-width: 900px) {
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 30px; }
}
@media (max-width: 540px) { .footer-grid { grid-template-columns: 1fr; } }

/* ---------- Page Hero (alt sayfalar) — banner ---------- */
.page-hero {
    height: 300px;
    padding: 0;
    display: flex;
    align-items: center;
    background: var(--grad-hero);
    text-align: center;
    border-bottom: 1px solid var(--line);
    position: relative;
    overflow: hidden;
}
.page-hero.has-bg {
    background: #0a1020;
}
.page-hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center center;
    display: block;
    z-index: 0;
    pointer-events: none;
}
.page-hero.has-bg::before {
    display: none;
}
.page-hero::before {
    content: "";
    position: absolute; inset: 0;
    background-image:
        linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse at center, black 0%, transparent 75%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 0%, transparent 75%);
    pointer-events: none;
}
.page-hero-overlay {
    position: absolute;
    inset: 0;
    background:
        linear-gradient(180deg, rgba(7,16,30,0.62) 0%, rgba(7,16,30,0.88) 100%);
    pointer-events: none;
    z-index: 1;
}
.page-hero-inner {
    position: relative;
    z-index: 2;
}
.page-hero h1 {
    color: var(--txt-0);
    margin-bottom: 14px;
    font-size: clamp(2rem, 4vw, 3rem);
}
.page-hero.has-bg h1 { text-shadow: 0 2px 16px rgba(0,0,0,.55); }
.page-hero p {
    color: var(--txt-1);
    max-width: 720px;
    margin: 0 auto;
    font-size: 1.05rem;
}
.page-hero.has-bg p {
    color: rgba(255,255,255,0.92);
    text-shadow: 0 1px 8px rgba(0,0,0,.5);
}
.page-hero.has-bg .breadcrumb { color: rgba(255,255,255,0.85); }
.page-hero.has-bg .breadcrumb a { color: var(--accent); }
.breadcrumb .sep { opacity: .5; }
.breadcrumb {
    display: inline-flex; gap: 10px;
    margin-bottom: 20px;
    font-size: .85rem;
    color: var(--txt-2);
    text-transform: uppercase;
    letter-spacing: .15em;
    font-family: var(--font-display);
    font-weight: 600;
}
.breadcrumb a { color: var(--accent-2); }

/* ---------- Article (servis/proje detay) ---------- */
.article {
    max-width: 860px;
    margin: 0 auto;
    color: var(--txt-1);
    font-size: 1.05rem;
    line-height: 1.8;
}
.article h2, .article h3 { color: var(--txt-0); margin-top: 1.6em; }
.article ul, .article ol { padding-left: 1.4em; }
.article li { margin-bottom: 8px; }
.article img { border-radius: var(--radius-md); margin: 1.4em 0; }
.article-featured-image {
    width: 100%;
    max-height: 520px;
    object-fit: cover;
    border-radius: var(--radius-lg);
    margin: 0 0 36px !important;
    border: 1px solid var(--line);
}

/* ---------- Project Detail (sol görsel + sağ detay card) ---------- */
.project-detail-grid {
    display: grid;
    grid-template-columns: 1.25fr 1fr;
    gap: 36px;
    align-items: start;
}
.project-detail-media {
    position: sticky;
    top: 100px;
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--line);
    background: var(--bg-2);
}
.project-detail-media img {
    width: 100%;
    height: 100%;
    max-height: 560px;
    object-fit: cover;
    display: block;
}
.project-detail-info {
    background: var(--grad-card);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    padding: 32px 30px;
}
.project-detail-title {
    font-family: var(--font-display);
    font-size: 1.7rem;
    font-weight: 700;
    color: var(--txt-0);
    margin: 8px 0 14px;
    line-height: 1.2;
}
.project-detail-summary {
    color: var(--txt-2);
    font-size: 1rem;
    line-height: 1.65;
    margin-bottom: 22px;
}
.project-detail-list {
    list-style: none;
    padding: 0;
    margin: 0 0 26px;
    display: grid;
    gap: 16px;
    border-top: 1px solid var(--line);
    padding-top: 22px;
}
.project-detail-list li {
    display: flex;
    gap: 14px;
    align-items: flex-start;
}
.project-detail-list .ic {
    flex-shrink: 0;
    width: 40px; height: 40px;
    border-radius: 10px;
    display: grid; place-items: center;
    background: rgba(0,229,255,.1);
    border: 1px solid rgba(0,229,255,.2);
    color: var(--accent-2);
}
.project-detail-list .ic svg { width: 20px; height: 20px; }
.project-detail-list h4 {
    margin: 0 0 2px;
    font-size: .72rem;
    color: var(--txt-3);
    text-transform: uppercase;
    letter-spacing: .14em;
    font-weight: 600;
}
.project-detail-list p { margin: 0; color: var(--txt-0); font-weight: 600; font-size: 1rem; }
.project-detail-list a { color: var(--accent-2); }
.project-detail-list a:hover { color: var(--accent); }

.project-gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 16px;
}
.project-gallery-grid img {
    aspect-ratio: 4/3;
    object-fit: cover;
    border-radius: var(--radius-md);
    border: 1px solid var(--line);
    margin: 0 !important;
}

@media (max-width: 960px) {
    .project-detail-grid { grid-template-columns: 1fr; gap: 24px; }
    .project-detail-media { position: static; }
    .project-detail-media img { max-height: 360px; }
}

/* ---------- Reference Logos (uniform card grid) ---------- */
.references-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 18px;
}
.reference-card {
    /* Tüm kartlar AYNI boyutta, içerik ortalı, opacity tam, filter yok */
    height: 220px;
    background: #fff;                     /* Logoların altı beyaz — okunabilir */
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    display: flex;
    flex-direction: column;
    align-items: stretch;
    justify-content: space-between;
    padding: 0;
    overflow: hidden;
    transition: border-color .25s ease, transform .25s ease, box-shadow .25s ease;
    text-align: center;
    text-decoration: none;
    color: inherit;
}
.reference-card:hover {
    border-color: var(--accent-2);
    transform: translateY(-3px);
    box-shadow: 0 14px 30px rgba(0,0,0,.25);
}
.reference-card .ref-logo-wrap {
    flex: 1 1 auto;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 18px 18px 12px;
    background: #fff;
    min-height: 0;
}
.reference-card .ref-logo-wrap img {
    max-height: 100%;
    max-width: 88%;
    width: auto;
    height: auto;
    object-fit: contain;
    /* Hiçbir koşulda filter yok, opacity 1 */
    opacity: 1;
    filter: none;
}
.reference-card .ref-name {
    flex-shrink: 0;
    background: var(--bg-2);
    color: var(--txt-0);
    font-family: var(--font-display);
    font-weight: 700;
    font-size: .92rem;
    letter-spacing: .03em;
    line-height: 1.3;
    padding: 12px 14px;
    border-top: 1px solid var(--line);
    /* 2 satıra kadar sığsın, taşmasın */
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    min-height: 46px;
}
/* Logosuz referanslar: tüm alanı kaplar */
.reference-card.no-logo { background: var(--bg-2); }
.reference-card.no-logo .ref-name {
    background: transparent;
    border-top: none;
    flex: 1 1 auto;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.05rem;
    -webkit-line-clamp: unset;
    overflow: visible;
}
.reference-card .label {
    font-family: var(--font-display);
    font-weight: 600;
    color: var(--txt-1);
    font-size: 1rem;
    letter-spacing: .03em;
}

/* ---------- Contact ---------- */
.contact-grid {
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: 44px;
    align-items: stretch;
}
.contact-info-card {
    background: var(--grad-card);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    padding: 36px;
}
.contact-info-list { list-style: none; padding: 0; margin: 28px 0; display: grid; gap: 22px; }
.contact-info-list li { display: flex; gap: 16px; align-items: flex-start; }
.contact-info-list .icon {
    width: 44px; height: 44px;
    display: grid; place-items: center;
    border-radius: 12px;
    background: linear-gradient(135deg, rgba(30,107,255,0.18), rgba(0,229,255,0.12));
    border: 1px solid rgba(0,229,255,0.25);
    color: var(--accent-2);
    flex-shrink: 0;
}
.contact-info-list .icon svg { width: 22px; height: 22px; }
.contact-info-list h4 { color: var(--txt-0); font-size: .95rem; margin: 0 0 4px; text-transform: uppercase; letter-spacing: .12em; }
.contact-info-list p, .contact-info-list a { color: var(--txt-1); margin: 0; font-size: .98rem; }
.contact-info-list a:hover { color: var(--accent); }

.map-frame {
    width: 100%;
    aspect-ratio: 16/9;
    border-radius: var(--radius-md);
    border: 1px solid var(--line);
    overflow: hidden;
    margin-top: 24px;
    background: var(--bg-3);
}
.map-frame iframe { width: 100%; height: 100%; border: 0; filter: invert(.92) hue-rotate(180deg); }

@media (max-width: 900px) { .contact-grid { grid-template-columns: 1fr; } }

/* ---------- Back to top button ---------- */
.back-to-top {
    position: fixed;
    right: 22px;
    bottom: 22px;
    z-index: 60;
    width: 46px;
    height: 46px;
    border-radius: 50%;
    border: none;
    background: var(--primary);
    color: #fff;
    display: grid;
    place-items: center;
    cursor: pointer;
    box-shadow: 0 12px 30px rgba(30,107,255,.45);
    opacity: 0;
    visibility: hidden;
    transform: translateY(12px);
    transition: opacity .25s ease, transform .25s ease, background .2s ease;
}
.back-to-top:hover { background: var(--accent); color: var(--bg-0); }
.back-to-top.is-visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}
.back-to-top svg { width: 22px; height: 22px; }
@media (max-width: 480px) {
    .back-to-top { right: 16px; bottom: 16px; width: 42px; height: 42px; }
}

/* ---------- Reveal animations ---------- */
.reveal {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity .8s ease, transform .8s ease;
}
.reveal.is-visible { opacity: 1; transform: none; }

/* ---------- Scrollbar ---------- */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--bg-1); }
::-webkit-scrollbar-thumb { background: var(--bg-3); border-radius: 5px; }
::-webkit-scrollbar-thumb:hover { background: var(--primary); }

::selection { background: var(--primary); color: #fff; }

/* ---------- Helpers ---------- */
.text-center { text-align: center; }
.mt-md { margin-top: 24px; }
.mt-lg { margin-top: 40px; }
.mb-lg { margin-bottom: 40px; }
.flex { display: flex; }
.grid { display: grid; }

/* Görünürlük helper'ları */
.hide-sm { /* default görünür, ≤768px gizlenir */ }
.hide-md { /* default görünür, ≤1024px gizlenir */ }
.show-sm { display: none; }

/* =========================================================
   RESPONSIVE — Mobil ve tablet için kapsamlı düzenlemeler
   ========================================================= */

/* Tablet (≤ 1024px) */
@media (max-width: 1024px) {
    :root { --container: 100%; }
    .container { padding: 0 24px; }
    section { padding: 80px 0; }
    .section-title { font-size: clamp(1.6rem, 4vw, 2.2rem); }
    .hero-slide { padding: 120px 0 80px; }
    .hero-title { font-size: clamp(2rem, 5vw, 3rem); }
    .hide-md { display: none !important; }
    .topbar-info { gap: 16px; font-size: .8rem; }
}

/* Page Hero responsive davranışı (banner — sabit yükseklik) */
@media (max-width: 900px) {
    .page-hero {
        height: 240px;
    }
    .page-hero h1 { font-size: clamp(1.6rem, 6vw, 2.2rem); }
    .page-hero p { font-size: .98rem; }
    .breadcrumb { margin-bottom: 14px; font-size: .75rem; letter-spacing: .12em; }
}

/* Mobil (≤ 768px) */
@media (max-width: 768px) {
    :root { --header-h: 72px; }
    .container { padding: 0 18px; }
    section { padding: 60px 0; }

    .hide-sm { display: none !important; }

    /* Header / Logo */
    .brand { gap: 10px; }
    .brand-img { height: 38px !important; max-width: 48px !important; }
    .brand-name { font-size: 1rem; }
    .brand-name small { font-size: .58rem; letter-spacing: .25em; }

    /* Topbar mobilde tamamen gizli (sadece sosyal kalır) */
    .topbar { font-size: .75rem; padding: 0; }
    .topbar-info { display: none; }
    .topbar-inner { justify-content: center; padding: 6px 0; }

    /* Hero Slider */
    .hero-slider { min-height: 520px; }
    .hero-slide { padding: 100px 0 60px; }
    .hero-eyebrow { font-size: .72rem; }
    .hero-title { font-size: clamp(1.7rem, 7vw, 2.4rem); }
    .hero-subtitle { font-size: 1rem; }
    .hero-actions { flex-direction: column; gap: 12px; }
    .hero-actions .btn { width: 100%; justify-content: center; }

    /* Hero stat'lar mobilde TEK satırda 3 kolon, kompakt */
    .hero-stats {
        display: grid !important;
        grid-template-columns: repeat(3, 1fr) !important;
        gap: 10px !important;
        flex-wrap: nowrap !important;
        text-align: left;
        margin: 0;
        padding: 16px 14px;
        background: rgba(7,16,30,.55);
        border: 1px solid rgba(255,255,255,.08);
        border-radius: 14px;
        backdrop-filter: blur(8px);
    }
    .hero-stat { gap: 2px; min-width: 0; }
    .hero-stat strong {
        font-size: 1.15rem;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }
    .hero-stat span {
        font-size: .6rem;
        letter-spacing: .08em;
        line-height: 1.2;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }
    .hero-stat-divider { display: none; }

    /* Page hero banner (mobil) */
    .page-hero { height: 200px; }

    /* Bölümler */
    .section-title { font-size: clamp(1.5rem, 6vw, 2rem); }
    .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr !important; gap: 20px; }
    .services-grid, .projects-grid, .features-grid { grid-template-columns: 1fr !important; }

    /* About */
    .about-grid { grid-template-columns: 1fr; gap: 30px; }
    .about-visual { min-height: 260px; }

    /* Footer */
    .footer-grid { grid-template-columns: 1fr; gap: 30px; }
    .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }

    /* Buttons */
    .btn { padding: 14px 22px; font-size: .85rem; }

    /* Forms */
    input, textarea, select {
        font-size: 16px !important; /* iOS zoom önler */
    }

    /* Tablo / kartlar */
    .article-featured-image { margin: 20px 0; }

    /* Contact */
    .contact-grid { gap: 24px; }
    .contact-info-item { padding: 16px; }

    /* Map */
    .map-frame { height: 260px; }
}

/* Küçük mobil (≤ 480px) */
@media (max-width: 480px) {
    .container { padding: 0 14px; }
    section { padding: 48px 0; }

    .topbar { display: none; }

    .brand-name { font-size: .95rem; }
    .brand-img { height: 34px !important; max-width: 42px !important; }

    .hero-slider { min-height: 540px; padding-bottom: 30px; }
    .hero-slide { padding: 90px 0 50px; }
    /* Çok küçük ekranda stats yine 3'te kalsın ama daha küçük yazı */
    .hero-stats { gap: 8px !important; padding: 12px 10px !important; }
    .hero-stat strong { font-size: 1rem; }
    .hero-stat span { font-size: .55rem; }

    .page-hero { height: 170px; }
    .page-hero h1 { font-size: clamp(1.4rem, 7vw, 1.9rem); }
    .breadcrumb { font-size: .7rem; }

    .btn { padding: 12px 20px; font-size: .8rem; }
}

/* Mobilde tablo overflow */
@media (max-width: 768px) {
    table { display: block; overflow-x: auto; -webkit-overflow-scrolling: touch; }
}

/* Touch cihazlarda hover efektlerini söndür */
@media (hover: none) {
    .service-card:hover,
    .project-card:hover,
    .reference-card:hover { transform: none; }
}