:root {
    --vrd-primary: #1a5fb4;
    --vrd-secondary: #0d47a1;
    --vrd-accent: #e65100;
    --vrd-dark: #0d1b2a;
    --vrd-light: #f1f5f9;
    --vrd-text: #1a237e;
    --vrd-muted: #5c6bc0;
    --vrd-white: #ffffff;
    --vrd-border: #c5cae9;
    --vrd-ok: #2e7d32;
    --vrd-grad-a: linear-gradient(128deg, #0d47a1 0%, #1565c0 50%, #1976d2 100%);
    --vrd-grad-b: linear-gradient(128deg, #ff6f00 0%, #ff8f00 100%);
    --vrd-shadow-xs: 0 2px 4px rgba(0, 0, 0, 0.06);
    --vrd-shadow-s: 0 6px 12px -2px rgba(0, 0, 0, 0.08);
    --vrd-shadow-m: 0 12px 24px -4px rgba(0, 0, 0, 0.12);
    --vrd-shadow-l: 0 24px 48px -8px rgba(0, 0, 0, 0.14);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 15px;
}

body {
    font-family: 'Inter', 'Segoe UI', system-ui, sans-serif;
    line-height: 1.65;
    color: var(--vrd-text);
    background-color: var(--vrd-white);
    overflow-x: hidden;
}

.container {
    max-width: 1180px;
    margin: 0 auto;
    padding: 0 24px;
}

.section {
    padding: 75px 0 85px;
}

.vrd-heading {
    font-size: 2.35rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 18px;
    color: var(--vrd-text);
}

.vrd-sub {
    font-size: 1.1rem;
    text-align: center;
    color: var(--vrd-muted);
    margin-bottom: 48px;
    max-width: 680px;
    margin-left: auto;
    margin-right: auto;
}

header {
    background: var(--vrd-white);
    box-shadow: var(--vrd-shadow-s);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: all 0.25s ease;
}

header.scrolled {
    box-shadow: var(--vrd-shadow-m);
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 18px 24px;
    max-width: 1180px;
    margin: 0 auto;
}

.logo {
    font-size: 1.65rem;
    font-weight: 800;
    color: var(--vrd-primary);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo i {
    font-size: 1.9rem;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 28px;
    align-items: center;
}

.nav-menu li a {
    text-decoration: none;
    color: var(--vrd-text);
    font-weight: 500;
    transition: color 0.25s ease;
    position: relative;
}

.nav-menu li a:hover {
    color: var(--vrd-primary);
}

.nav-menu li a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--vrd-primary);
    transition: width 0.25s ease;
}

.nav-menu li a:hover::after {
    width: 100%;
}

.cta-button {
    background: var(--vrd-grad-a);
    color: var(--vrd-white);
    padding: 11px 28px;
    border-radius: 40px;
    text-decoration: none;
    font-weight: 600;
    transition: transform 0.25s ease, box-shadow 0.25s ease;
    display: inline-block;
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: var(--vrd-shadow-l);
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 6px;
}

.hamburger span {
    width: 24px;
    height: 3px;
    background: var(--vrd-text);
    transition: all 0.25s ease;
    border-radius: 2px;
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(7px, 7px);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

.hero {
    background: var(--vrd-grad-a);
    color: var(--vrd-white);
    padding: 110px 0 75px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1440 320"><path fill="rgba(255,255,255,0.08)" d="M0,128L60,133C120,138,240,148,360,138.7C480,128,600,96,720,96C840,96,960,128,1080,138.7C1200,149,1320,139,1380,133.3L1440,128L1440,320L1380,320C1320,320,1200,320,1080,320C960,320,840,320,720,320C600,320,480,320,360,320C240,320,120,320,60,320L0,320Z"></path></svg>');
    background-size: cover;
    background-position: bottom;
}

.hero-content {
    max-width: 1180px;
    margin: 0 auto;
    padding: 0 24px;
    text-align: center;
    position: relative;
    z-index: 1;
}

.hero h1 {
    font-size: 3.2rem;
    font-weight: 800;
    margin-bottom: 18px;
    line-height: 1.25;
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 36px;
    opacity: 0.96;
    max-width: 680px;
    margin-left: auto;
    margin-right: auto;
}

.hero-buttons {
    display: flex;
    gap: 18px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn-primary {
    background: var(--vrd-white);
    color: var(--vrd-primary);
    padding: 14px 36px;
    border-radius: 40px;
    text-decoration: none;
    font-weight: 700;
    font-size: 1.1rem;
    transition: all 0.25s ease;
    display: inline-flex;
    align-items: center;
    gap: 10px;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 28px rgba(0, 0, 0, 0.18);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.18);
    color: var(--vrd-white);
    padding: 14px 36px;
    border-radius: 40px;
    text-decoration: none;
    font-weight: 700;
    font-size: 1.1rem;
    transition: all 0.25s ease;
    border: 2px solid var(--vrd-white);
    display: inline-flex;
    align-items: center;
    gap: 10px;
}

.btn-secondary:hover {
    background: var(--vrd-white);
    color: var(--vrd-primary);
}

.vrd-ozellik-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(290px, 1fr));
    gap: 28px;
    margin-top: 56px;
}

.vrd-ozellik {
    background: var(--vrd-white);
    padding: 38px 28px;
    border-radius: 18px;
    box-shadow: var(--vrd-shadow-s);
    transition: all 0.28s ease;
    text-align: center;
    border: 2px solid transparent;
}

.vrd-ozellik:hover {
    transform: translateY(-8px);
    box-shadow: var(--vrd-shadow-l);
    border-color: var(--vrd-primary);
}

.vrd-ozellik-ico {
    width: 76px;
    height: 76px;
    background: var(--vrd-grad-a);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 22px;
    font-size: 1.9rem;
    color: var(--vrd-white);
}

.vrd-ozellik h3 {
    font-size: 1.4rem;
    margin-bottom: 14px;
    color: var(--vrd-text);
}

.vrd-ozellik p {
    color: var(--vrd-muted);
    line-height: 1.7;
}

.vrd-oyun-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
    gap: 28px;
}

.vrd-oyun {
    background: var(--vrd-white);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--vrd-shadow-s);
    transition: all 0.28s ease;
}

.vrd-oyun:hover {
    transform: scale(1.03);
    box-shadow: var(--vrd-shadow-l);
}

.vrd-oyun-img {
    width: 100%;
    height: 195px;
    background: var(--vrd-grad-b);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3.8rem;
    color: var(--vrd-white);
}

.vrd-oyun-body {
    padding: 24px;
}

.vrd-oyun h3 {
    font-size: 1.4rem;
    margin-bottom: 10px;
    color: var(--vrd-text);
}

.vrd-oyun p {
    color: var(--vrd-muted);
    margin-bottom: 18px;
    line-height: 1.65;
}

.vrd-badge {
    display: inline-block;
    background: var(--vrd-accent);
    color: var(--vrd-white);
    padding: 4px 14px;
    border-radius: 18px;
    font-size: 0.85rem;
    font-weight: 600;
}

.vrd-stats {
    background: var(--vrd-dark);
    color: var(--vrd-white);
    padding: 75px 0;
}

.vrd-stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(195px, 1fr));
    gap: 38px;
    text-align: center;
}

.vrd-stats-item h3 {
    font-size: 2.9rem;
    font-weight: 800;
    margin-bottom: 8px;
    background: var(--vrd-grad-a);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.vrd-stats-item p {
    font-size: 1.1rem;
    opacity: 0.9;
}

.vrd-cta-bolum {
    background: var(--vrd-grad-b);
    color: var(--vrd-white);
    padding: 95px 0;
    text-align: center;
}

.vrd-cta-bolum h2 {
    font-size: 2.8rem;
    margin-bottom: 18px;
}

.vrd-cta-bolum p {
    font-size: 1.2rem;
    margin-bottom: 36px;
    opacity: 0.96;
}

footer {
    background: var(--vrd-dark);
    color: var(--vrd-white);
    padding: 55px 0 28px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(245px, 1fr));
    gap: 38px;
    margin-bottom: 38px;
}

.footer-section h3 {
    font-size: 1.2rem;
    margin-bottom: 18px;
    color: var(--vrd-white);
}

.footer-section p {
    color: var(--vrd-muted);
    line-height: 1.7;
    margin-bottom: 18px;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 11px;
}

.footer-links a {
    color: var(--vrd-muted);
    text-decoration: none;
    transition: color 0.25s ease;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.footer-links a:hover {
    color: var(--vrd-primary);
}

.social-links {
    display: flex;
    gap: 14px;
    margin-top: 18px;
}

.social-links a {
    width: 38px;
    height: 38px;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--vrd-white);
    transition: all 0.25s ease;
    text-decoration: none;
}

.social-links a:hover {
    background: var(--vrd-primary);
    transform: translateY(-2px);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding-top: 28px;
    text-align: center;
}

.footer-bottom p {
    color: var(--vrd-muted);
    font-size: 0.9rem;
}

.footer-bottom-links {
    display: flex;
    justify-content: center;
    gap: 18px;
    margin-top: 14px;
    flex-wrap: wrap;
}

.footer-bottom-links a {
    color: var(--vrd-muted);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.25s ease;
}

.footer-bottom-links a:hover {
    color: var(--vrd-primary);
}

.breadcrumb {
    background: var(--vrd-light);
    padding: 18px 0;
    margin-bottom: 38px;
}

.breadcrumb-list {
    display: flex;
    list-style: none;
    gap: 10px;
    flex-wrap: wrap;
}

.breadcrumb-list li {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--vrd-muted);
}

.breadcrumb-list a {
    color: var(--vrd-text);
    text-decoration: none;
    transition: color 0.25s ease;
}

.breadcrumb-list a:hover {
    color: var(--vrd-primary);
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(295px, 1fr));
    gap: 28px;
    margin-bottom: 55px;
}

.vrd-iletisim-kart {
    background: var(--vrd-white);
    padding: 28px;
    border-radius: 14px;
    box-shadow: var(--vrd-shadow-s);
    text-align: center;
}

.vrd-iletisim-ico {
    width: 58px;
    height: 58px;
    background: var(--vrd-grad-a);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 18px;
    font-size: 1.45rem;
    color: var(--vrd-white);
}

.vrd-iletisim-kart h3 {
    font-size: 1.2rem;
    margin-bottom: 10px;
}

.vrd-iletisim-kart p {
    color: var(--vrd-muted);
}

.vrd-iletisim-kart a {
    color: var(--vrd-primary);
    text-decoration: none;
    font-weight: 600;
}

.map-container {
    width: 100%;
    height: 380px;
    border-radius: 14px;
    overflow: hidden;
    box-shadow: var(--vrd-shadow-m);
}

.content-section {
    background: var(--vrd-light);
}

.content-box {
    background: var(--vrd-white);
    padding: 38px;
    border-radius: 14px;
    box-shadow: var(--vrd-shadow-s);
    margin-bottom: 28px;
}

.content-box h2 {
    font-size: 1.9rem;
    margin-bottom: 18px;
    color: var(--vrd-text);
}

.content-box h3 {
    font-size: 1.4rem;
    margin: 28px 0 14px;
    color: var(--vrd-text);
}

.content-box p {
    color: var(--vrd-muted);
    line-height: 1.75;
    margin-bottom: 14px;
}

.content-box ul {
    margin: 18px 0 18px 22px;
}

.content-box ul li {
    color: var(--vrd-muted);
    line-height: 1.75;
    margin-bottom: 9px;
}

.error-page {
    min-height: 78vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 38px 24px;
}

.error-content h1 {
    font-size: 7.5rem;
    font-weight: 800;
    background: var(--vrd-grad-a);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 18px;
}

.error-content h2 {
    font-size: 1.9rem;
    margin-bottom: 18px;
    color: var(--vrd-text);
}

.error-content p {
    color: var(--vrd-muted);
    font-size: 1.1rem;
    margin-bottom: 38px;
}

.vrd-float-zone {
    position: fixed;
    left: 14px;
    right: 14px;
    bottom: 14px;
    z-index: 999998;
    font-family: system-ui, -apple-system, sans-serif;
}

.vrd-cta-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 50px;
    border-radius: 14px;
    font-weight: 800;
    color: #fff;
    text-decoration: none;
    background: #0d47a1;
    box-shadow: 0 8px 22px rgba(0, 0, 0, 0.2);
}

.vrd-cta-btn:hover {
    background: #0a3d8a;
}

@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        left: -100%;
        top: 68px;
        flex-direction: column;
        background: var(--vrd-white);
        width: 100%;
        text-align: center;
        transition: left 0.28s ease;
        box-shadow: var(--vrd-shadow-m);
        padding: 18px 0;
        gap: 0;
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-menu li {
        margin: 14px 0;
    }

    .hero h1 {
        font-size: 2.4rem;
    }

    .hero p {
        font-size: 1rem;
    }

    .vrd-heading {
        font-size: 1.95rem;
    }

    .vrd-ozellik-grid,
    .vrd-oyun-grid {
        grid-template-columns: 1fr;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .btn-primary,
    .btn-secondary {
        width: 100%;
        max-width: 295px;
    }

    .vrd-stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer-content {
        grid-template-columns: 1fr;
    }

    .vrd-cta-bolum h2 {
        font-size: 1.9rem;
    }

    .error-content h1 {
        font-size: 4.8rem;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 1.95rem;
    }

    .vrd-heading {
        font-size: 1.65rem;
    }

    .vrd-stats-item h3 {
        font-size: 2.4rem;
    }

    .vrd-stats-grid {
        grid-template-columns: 1fr;
    }
}

.scroll-to-top {
    position: fixed;
    bottom: 28px;
    right: 28px;
    width: 48px;
    height: 48px;
    background: var(--vrd-primary);
    color: var(--vrd-white);
    border-radius: 50%;
    display: none;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.25s ease;
    z-index: 999;
    box-shadow: var(--vrd-shadow-m);
}

.scroll-to-top:hover {
    background: var(--vrd-secondary);
    transform: translateY(-4px);
}

.scroll-to-top.show {
    display: flex;
}

@keyframes vrdFadeUp {
    from {
        opacity: 0;
        transform: translateY(28px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    animation: vrdFadeUp 0.55s ease-out;
}

/* Uyumluluk - eski class adları */
.section-title { font-size: 2.35rem; font-weight: 700; text-align: center; margin-bottom: 18px; color: var(--vrd-text); }
.section-subtitle { font-size: 1.1rem; text-align: center; color: var(--vrd-muted); margin-bottom: 48px; max-width: 680px; margin-left: auto; margin-right: auto; }
.features-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(290px, 1fr)); gap: 28px; margin-top: 56px; }
.feature-card { background: var(--vrd-white); padding: 38px 28px; border-radius: 18px; box-shadow: var(--vrd-shadow-s); transition: all 0.28s ease; text-align: center; border: 2px solid transparent; }
.feature-card:hover { transform: translateY(-8px); box-shadow: var(--vrd-shadow-l); border-color: var(--vrd-primary); }
.feature-icon { width: 76px; height: 76px; background: var(--vrd-grad-a); border-radius: 50%; display: flex; align-items: center; justify-content: center; margin: 0 auto 22px; font-size: 1.9rem; color: var(--vrd-white); }
.feature-card h3, .vrd-ozellik h3 { font-size: 1.4rem; margin-bottom: 14px; color: var(--vrd-text); }
.feature-card p, .vrd-ozellik p { color: var(--vrd-muted); line-height: 1.7; }
.games-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(270px, 1fr)); gap: 28px; }
.game-card { background: var(--vrd-white); border-radius: 16px; overflow: hidden; box-shadow: var(--vrd-shadow-s); transition: all 0.28s ease; }
.game-card:hover { transform: scale(1.03); box-shadow: var(--vrd-shadow-l); }
.game-image { width: 100%; height: 195px; background: var(--vrd-grad-b); display: flex; align-items: center; justify-content: center; font-size: 3.8rem; color: var(--vrd-white); }
.game-content { padding: 24px; }
.game-card h3 { font-size: 1.4rem; margin-bottom: 10px; color: var(--vrd-text); }
.game-card p { color: var(--vrd-muted); margin-bottom: 18px; line-height: 1.65; }
.game-badge { display: inline-block; background: var(--vrd-accent); color: var(--vrd-white); padding: 4px 14px; border-radius: 18px; font-size: 0.85rem; font-weight: 600; }
.stats-section { background: var(--vrd-dark); color: var(--vrd-white); padding: 75px 0; }
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(195px, 1fr)); gap: 38px; text-align: center; }
.stat-item h3 { font-size: 2.9rem; font-weight: 800; margin-bottom: 8px; background: var(--vrd-grad-a); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.stat-item p { font-size: 1.1rem; opacity: 0.9; }
.cta-section { background: var(--vrd-grad-b); color: var(--vrd-white); padding: 95px 0; text-align: center; }
.cta-section h2 { font-size: 2.8rem; margin-bottom: 18px; }
.cta-section p { font-size: 1.2rem; margin-bottom: 36px; opacity: 0.96; }
.contact-card { background: var(--vrd-white); padding: 28px; border-radius: 14px; box-shadow: var(--vrd-shadow-s); text-align: center; }
.contact-icon { width: 58px; height: 58px; background: var(--vrd-grad-a); border-radius: 50%; display: flex; align-items: center; justify-content: center; margin: 0 auto 18px; font-size: 1.45rem; color: var(--vrd-white); }
.contact-card h3 { font-size: 1.2rem; margin-bottom: 10px; }
.contact-card p { color: var(--vrd-muted); }
.contact-card a { color: var(--vrd-primary); text-decoration: none; font-weight: 600; }