:root {
    --red: #d71920;
    --blue: #005fc9;
    --blue-dark: #07182f;
    --navy: #06162d;
    --text: #101828;
    --muted: #667085;
    --soft: #f5f7fb;
    --line: rgba(16, 24, 40, .10);
    --shadow: 0 24px 70px rgba(16, 24, 40, .12);
    --navbar-height: 88px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--text); font-family: "Segoe UI", Arial, sans-serif; background: #fff; }
a { text-decoration: none; }
img { max-width: 100%; }

.yo-navbar {
    min-height: 88px;
    background: rgba(255, 255, 255, .96);
    backdrop-filter: blur(18px);
    border-bottom: 1px solid rgba(16, 24, 40, .08);
    box-shadow: 0 10px 30px rgba(16, 24, 40, .04);
    transition: min-height .25s ease, box-shadow .25s ease;
}

.yo-navbar.scrolled { min-height: 74px; box-shadow: 0 14px 34px rgba(16, 24, 40, .10); }
.yo-brand img { height: 64px; max-width: 230px; object-fit: contain; background: transparent; border: 0; }
.nav-link { color: var(--text); font-weight: 750; font-size: 15px; }
.nav-link:hover, .nav-link.active { color: var(--blue); }
.phone-link { color: var(--navy); font-weight: 900; white-space: nowrap; }

.yo-btn-primary, .yo-btn-blue {
    color: #fff;
    border: 0;
    border-radius: 12px;
    padding: 12px 22px;
    font-weight: 850;
    box-shadow: 0 14px 30px rgba(0, 95, 201, .22);
    transition: transform .2s ease, filter .2s ease;
}

.yo-btn-primary { background: var(--red); box-shadow: 0 14px 30px rgba(215, 25, 32, .28); }
.yo-btn-blue { background: var(--blue); }
.yo-btn-primary:hover, .yo-btn-blue:hover { color: #fff; transform: translateY(-2px); filter: brightness(.95); }
.yo-btn-light-outline { color: #fff; border: 1px solid rgba(255, 255, 255, .55); border-radius: 12px; padding: 12px 22px; font-weight: 850; background: rgba(255, 255, 255, .08); }
.yo-btn-light-outline:hover { color: var(--navy); background: #fff; }

/* Hero: sabit menünün altında başlar; orijinal görsel korunurken arka katman ekranı doldurur. */
.hero-slider { height: max(620px, calc(100svh - var(--navbar-height))); margin-top: var(--navbar-height); }
.hero-slider .carousel, .hero-slider .carousel-inner, .hero-slider .carousel-item { height: 100%; }
.carousel-item { position: relative; overflow: hidden; background: #07182f; isolation: isolate; }

.hero-media { position: absolute; inset: 0; overflow: hidden; background: #07182f; }
.hero-media::before {
    content: "";
    position: absolute;
    inset: -30px;
    background-image: var(--hero-image);
    background-position: center;
    background-size: cover;
    filter: blur(24px) brightness(.72) saturate(.94);
    opacity: .90;
    transform: scale(1.08);
}

.hero-img {
    position: relative;
    z-index: 1;
    display: block;
    width: 100%;
    height: 100%;
    object-fit: contain;
    object-position: center;
}

.hero-media-cover .hero-img { object-fit: cover; object-position: center; }
.hero-media-cover::before { filter: blur(18px) brightness(.55); }
.hero-media-full .hero-img { object-fit: contain; }
.hero-focus-erp .hero-img { width: 58%; margin-left: auto; object-fit: contain; object-position: right center; }
.hero-focus-erp::before { background-position: center 20%; }
.hero-focus-reporting .hero-img { object-position: center center; }
.hero-focus-crm .hero-img, .hero-focus-pdks .hero-img { object-position: center center; }

.hero-overlay { position: absolute; z-index: 2; inset: 0; pointer-events: none; }
.hero-overlay-office {
    background:
        radial-gradient(circle at 50% 48%, rgba(24, 24, 27, .74), rgba(12, 12, 14, .92) 72%),
        linear-gradient(rgba(12, 12, 14, .82), rgba(12, 12, 14, .90));
}
.hero-overlay-caption { background: linear-gradient(0deg, rgba(2, 8, 18, .72) 0%, rgba(2, 8, 18, .16) 38%, transparent 66%); }
.hero-overlay-slide {
    background:
        linear-gradient(90deg, rgba(2, 8, 18, .82) 0%, rgba(2, 8, 18, .60) 32%, rgba(2, 8, 18, .12) 58%, transparent 76%),
        linear-gradient(0deg, rgba(2, 8, 18, .84) 0%, rgba(2, 8, 18, .28) 34%, transparent 58%);
}
.hero-overlay-crm {
    background:
        linear-gradient(90deg, rgba(2, 8, 18, .90) 0%, rgba(2, 8, 18, .74) 40%, rgba(2, 8, 18, .16) 66%, transparent 84%),
        linear-gradient(0deg, rgba(2, 8, 18, .88) 0%, rgba(2, 8, 18, .30) 40%, transparent 64%);
}

.hero-content {
    position: absolute;
    z-index: 3;
    inset: 0;
    display: flex;
    flex-direction: column;
    color: #fff;
    max-width: 1320px;
    pointer-events: none;
}

.hero-content > * { pointer-events: auto; }
.hero-content-intro { width: 100%; max-width: 1600px; justify-content: center; align-items: center; text-align: center; padding: 88px 48px 38px; }
.hero-kicker { display: inline-block; color: #ffb4b8; font-weight: 950; letter-spacing: 1.4px; text-transform: uppercase; margin-bottom: 14px; }
.hero-content h1 { font-size: clamp(42px, 5.5vw, 76px); line-height: 1.04; letter-spacing: -2.2px; font-weight: 380; max-width: 940px; text-wrap: balance; text-shadow: 0 8px 22px rgba(0, 0, 0, .26); }
.hero-content h1 strong { font-weight: 950; color: #ef1d27; }
.hero-content-intro p { max-width: 720px; color: rgba(255, 255, 255, .88); font-size: clamp(18px, 1.45vw, 21px); line-height: 1.62; margin: 18px 0 30px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }

.hero-content .hero-main-message {
    width: 100%;
    max-width: 1520px;
    margin: 0;
    color: #c7c7ca;
    font-size: clamp(48px, 5.15vw, 85px);
    line-height: 1.18;
    letter-spacing: -2.8px;
    font-weight: 720;
    text-shadow: none;
}

.hero-intro-logo {
    width: clamp(155px, 13vw, 215px);
    height: auto;
    margin: 0 auto 20px;
    object-fit: contain;
    filter: drop-shadow(0 8px 18px rgba(0, 0, 0, .24));
}

.hero-main-message span { display: block; }
.hero-content .hero-main-message strong { color: #b8141d; font-weight: 850; }
.hero-content-intro .hero-main-subtitle {
    max-width: 1180px;
    margin: 48px auto 0;
    color: #7b8492;
    font-size: clamp(21px, 2.25vw, 38px);
    line-height: 1.65;
    font-weight: 420;
    text-shadow: none;
}

.hero-slide-content {
    position: absolute;
    z-index: 3;
    left: 50%;
    bottom: 0;
    transform: translateX(-50%);
    padding-bottom: 96px;
    color: #fff;
}

.hero-slide-content-wide { max-width: 1320px; }
.hero-slide-kicker {
    display: block;
    margin-bottom: 12px;
    color: #ffb4b8;
    font-size: 13px;
    font-weight: 950;
    letter-spacing: 1.35px;
    text-transform: uppercase;
}

.hero-slide-content h2 {
    max-width: 920px;
    margin: 0;
    color: #fff;
    font-size: clamp(40px, 4.8vw, 72px);
    font-weight: 380;
    line-height: 1.05;
    letter-spacing: -2px;
    text-shadow: 0 8px 24px rgba(0, 0, 0, .30);
    text-wrap: balance;
}

.hero-slide-content h2 strong { color: #fff; font-weight: 950; }
.hero-slide-content > p {
    max-width: 760px;
    margin: 18px 0 0;
    color: rgba(255, 255, 255, .86);
    font-size: clamp(17px, 1.4vw, 21px);
    line-height: 1.58;
}

.hero-feature-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(150px, 1fr));
    max-width: 970px;
    gap: 14px;
    margin-top: 24px;
}

.hero-feature-grid div {
    min-height: 94px;
    padding: 14px 16px;
    border: 1px solid rgba(255, 255, 255, .18);
    border-radius: 14px;
    background: rgba(4, 13, 29, .70);
    backdrop-filter: blur(10px);
}

.hero-feature-grid b { display: block; margin-bottom: 5px; color: #fff; font-weight: 950; }
.hero-feature-grid small { display: block; color: rgba(255, 255, 255, .76); line-height: 1.4; }

.hero-content-caption { justify-content: flex-end; padding-bottom: 94px; }
.hero-copy-card {
    width: min(600px, calc(100% - 48px));
    padding: 24px 28px 26px;
    border: 1px solid rgba(255, 255, 255, .20);
    border-radius: 22px;
    background: rgba(3, 11, 25, .78);
    box-shadow: 0 18px 45px rgba(0, 0, 0, .26);
    backdrop-filter: blur(14px);
}

.hero-copy-card .hero-kicker { margin-bottom: 8px; font-size: 12px; }
.hero-copy-card h2 { margin: 0; font-size: clamp(30px, 3.1vw, 46px); line-height: 1.08; letter-spacing: -1.3px; font-weight: 900; text-wrap: balance; }
.hero-copy-card p { margin: 12px 0 0; max-width: 530px; color: rgba(255, 255, 255, .82); font-size: 17px; line-height: 1.55; }
.hero-detail-link { display: inline-flex; align-items: center; gap: 8px; margin-top: 16px; color: #fff; font-weight: 900; }
.hero-detail-link:hover { color: #ffb4b8; }

.carousel-indicators { z-index: 5; gap: 7px; margin-bottom: 28px; }
.carousel-indicators [data-bs-target] { width: 10px; height: 10px; border-radius: 999px; border: 0; background: #fff; opacity: .72; }
.carousel-indicators .active { width: 28px; background: var(--red); opacity: 1; }
.carousel-control-prev, .carousel-control-next { z-index: 5; width: 5.8%; }

.quick-values { background: #fff; box-shadow: 0 -16px 45px rgba(16, 24, 40, .04); }
.quick-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 0; border-bottom: 1px solid var(--line); }
.quick-grid div { padding: 28px 22px; display: grid; grid-template-columns: 48px 1fr; gap: 5px 15px; align-items: center; border-right: 1px solid var(--line); }
.quick-grid div:last-child { border-right: 0; }
.quick-grid span { grid-row: span 2; font-size: 34px; color: var(--blue); }
.quick-grid b { font-weight: 950; color: var(--navy); }
.quick-grid small { color: var(--muted); line-height: 1.45; }

.section { padding: 96px 0; }
.section-kicker { color: var(--red); font-weight: 950; letter-spacing: 1.3px; font-size: 13px; text-transform: uppercase; display: inline-block; margin-bottom: 12px; }
.intro-section h2, .section-head h2, .bayi-section h2, .cta-card h2, .sub-hero h1 { font-size: clamp(36px, 4.4vw, 62px); font-weight: 950; letter-spacing: -2px; line-height: 1.05; }
.lead-text, .section-head p, .bayi-section p, .sub-hero p { color: var(--muted); font-size: 19px; line-height: 1.75; }
.section-head { max-width: 830px; text-align: center; margin: 0 auto 52px; }

.service-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.service-card { background: #fff; border: 1px solid var(--line); border-radius: 22px; overflow: hidden; box-shadow: 0 16px 45px rgba(16, 24, 40, .07); transition: transform .25s ease, box-shadow .25s ease; }
.service-card:hover { transform: translateY(-8px); box-shadow: 0 26px 70px rgba(16, 24, 40, .14); }
.service-card img { width: 100%; height: 150px; object-fit: cover; }
.service-card h4 { padding: 20px 20px 8px; margin: 0; font-size: 19px; font-weight: 950; color: var(--navy); }
.service-card p { padding: 0 20px 22px; margin: 0; color: var(--muted); line-height: 1.62; }

.dashboard-section { background: linear-gradient(180deg, #fff, var(--soft)); }
.metric-card { height: 100%; background: #fff; border: 1px solid var(--line); border-radius: 24px; padding: 28px; box-shadow: 0 16px 45px rgba(16, 24, 40, .08); }
.metric-card span { color: var(--muted); font-weight: 850; }
.metric-card strong { display: block; color: var(--blue); font-size: 44px; font-weight: 950; letter-spacing: -1.5px; margin: 10px 0 8px; }
.metric-card small { color: var(--navy); font-weight: 700; }

.bayi-section { background: #fff; }
.bayi-visual { background: linear-gradient(135deg, #eef6ff, #fff); border-radius: 30px; padding: 18px; box-shadow: var(--shadow); border: 1px solid var(--line); }
.bayi-visual img { width: 100%; border-radius: 22px; display: block; }
.check-list { list-style: none; padding: 0; margin: 22px 0 30px; display: grid; gap: 10px; }
.check-list li { color: var(--navy); font-weight: 800; }
.check-list li::before { content: "✓"; color: var(--blue); font-weight: 950; margin-right: 10px; }

.process-section { background: radial-gradient(circle at 100% 0%, rgba(215, 25, 32, .08), transparent 28%), linear-gradient(180deg, #fff, var(--soft)); }
.process-map { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.process-map div { min-height: 82px; display: flex; align-items: center; border-radius: 18px; background: #fff; border: 1px solid var(--line); border-left: 5px solid var(--blue); padding: 18px; font-weight: 900; box-shadow: 0 12px 32px rgba(16, 24, 40, .07); }
.light-section { background: linear-gradient(180deg, var(--soft), #fff); }
.mission-card { height: 100%; border-radius: 30px; background: #fff; padding: 38px; border: 1px solid var(--line); box-shadow: var(--shadow); }
.mission-icon { width: 72px; height: 72px; border-radius: 24px; background: rgba(0, 95, 201, .08); display: flex; align-items: center; justify-content: center; font-size: 34px; margin-bottom: 22px; }
.mission-card h3 { font-weight: 950; font-size: 34px; }
.mission-card p { color: var(--muted); font-size: 19px; line-height: 1.7; margin: 0; }

.cta-section { background: linear-gradient(135deg, var(--navy), #020a16); }
.cta-card { max-width: 880px; margin: 0 auto; text-align: center; color: #fff; }
.cta-card img { width: 260px; max-width: 90%; margin-bottom: 24px; }
.cta-card p { color: rgba(255, 255, 255, .76); font-size: 19px; margin: 18px 0 30px; }
.sub-hero { padding: 170px 0 90px; background: linear-gradient(180deg, var(--soft), #fff); }
.contact-info, .contact-form { background: #fff; border: 1px solid var(--line); border-radius: 30px; padding: 34px; box-shadow: var(--shadow); }
.contact-info img { width: 230px; max-width: 100%; margin-bottom: 26px; }
.contact-info h3 { font-weight: 950; margin-bottom: 20px; }
.form-control { border-radius: 16px; border: 1px solid var(--line); padding: 15px 17px; }

.yo-footer { background: #041329; color: rgba(255, 255, 255, .72); padding: 72px 0 26px; }
.footer-logo { width: 230px; max-width: 100%; }
.footer-slogan { font-weight: 950; color: #fff; }
.yo-footer h6 { color: #fff; font-weight: 950; margin-bottom: 16px; }
.yo-footer a { display: block; color: rgba(255, 255, 255, .72); margin-bottom: 9px; }
.yo-footer a:hover { color: #fff; }
.footer-whatsapp { display: inline-block !important; background: #22c55e; color: #fff !important; border-radius: 999px; padding: 10px 16px; font-weight: 850; margin-top: 8px; }
.footer-bottom { border-top: 1px solid rgba(255, 255, 255, .10); margin-top: 42px; padding-top: 22px; display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.whatsapp-float { position: fixed; left: 22px; bottom: 22px; z-index: 55; background: #22c55e; color: #fff; border-radius: 999px; padding: 13px 20px; font-weight: 950; box-shadow: 0 16px 35px rgba(34, 197, 94, .34); }
.whatsapp-float:hover { color: #fff; transform: translateY(-2px); }
.back-top { position: fixed; right: 22px; bottom: 22px; z-index: 55; border: 0; width: 48px; height: 48px; border-radius: 999px; background: var(--red); color: #fff; font-size: 24px; font-weight: 950; box-shadow: 0 16px 35px rgba(215, 25, 32, .30); }

@media (max-width: 1199px) {
    .service-grid { grid-template-columns: repeat(3, 1fr); }
    .quick-grid { grid-template-columns: repeat(3, 1fr); }
    .quick-grid div { border-bottom: 1px solid var(--line); }
}

@media (max-width: 991px) {
    :root { --navbar-height: 72px; }
    .yo-brand img { height: 52px; }
    .hero-slider { height: max(680px, calc(100svh - var(--navbar-height))); }
    .hero-media-cover .hero-img { object-fit: cover; }
    .hero-focus-erp .hero-img { width: 70%; }
    .hero-overlay-office { background: rgba(12, 12, 14, .88); }
    .hero-content-intro { justify-content: center; padding: 110px 28px 64px; }
    .hero-intro-logo { width: clamp(150px, 24vw, 190px); margin-bottom: 18px; }
    .hero-content h1 { max-width: 760px; letter-spacing: -1.3px; }
    .hero-content-intro p { max-width: 680px; }
    .hero-content-caption { padding: 0 24px 94px; }
    .hero-slide-content { padding: 0 28px 90px; }
    .hero-feature-grid { grid-template-columns: repeat(2, minmax(150px, 1fr)); max-width: 720px; }
    .quick-grid, .service-grid, .process-map { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 575px) {
    .hero-slider { height: max(700px, calc(100svh - var(--navbar-height))); }
    .hero-focus-erp .hero-img { width: 100%; margin: 0; opacity: .82; }
    .hero-content-intro { padding: 96px 20px 56px; }
    .hero-intro-logo { width: min(145px, 42vw); margin-bottom: 16px; }
    .hero-content h1 { font-size: clamp(36px, 11vw, 48px); line-height: 1.08; }
    .hero-content-intro p { font-size: 17px; line-height: 1.52; margin: 14px 0 24px; }
    .hero-content .hero-main-message { font-size: clamp(38px, 11vw, 52px); line-height: 1.2; letter-spacing: -1.5px; }
    .hero-content-intro .hero-main-subtitle { margin-top: 34px; font-size: clamp(18px, 5vw, 23px); line-height: 1.55; }
    .hero-slide-content { width: 100%; padding: 0 20px 76px; }
    .hero-slide-kicker { margin-bottom: 9px; font-size: 11px; letter-spacing: 1px; }
    .hero-slide-content h2 { font-size: clamp(34px, 10vw, 44px); line-height: 1.08; letter-spacing: -1.2px; }
    .hero-slide-content > p { margin-top: 13px; font-size: 16px; line-height: 1.46; }
    .hero-feature-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; margin-top: 15px; }
    .hero-feature-grid div { min-height: 76px; padding: 10px 11px; border-radius: 11px; }
    .hero-feature-grid b { margin-bottom: 3px; font-size: 13px; }
    .hero-feature-grid small { font-size: 11px; line-height: 1.3; }
    .hero-content-caption { padding: 0 18px 86px; }
    .hero-copy-card { width: 100%; padding: 20px 20px 22px; border-radius: 18px; }
    .hero-copy-card h2 { font-size: 30px; }
    .hero-copy-card p { font-size: 16px; line-height: 1.48; }
    .carousel-control-prev, .carousel-control-next { display: none; }
    .carousel-indicators { margin-bottom: 22px; }
    .quick-grid, .service-grid, .process-map { grid-template-columns: 1fr; }
    .section { padding: 72px 0; }
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
}