.hero{position:relative;height:100vh;display:flex;align-items:center;justify-content:center;text-align:center;overflow:hidden}
    .hero-canvas{position:absolute;top:0;left:0;width:100%;height:100%;z-index:0}
    .hero-content{position:relative;z-index:2}
    .hero-title{font-size:clamp(3rem,8vw,6rem);font-weight:800;background:linear-gradient(135deg,var(--text-light) 0%,var(--bright-red) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent}
    .hero-subtitle{font-size:1.3rem;margin-top:1rem;opacity:.8}

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

        :root {
            --primary-black: #0a0a0a;
            --secondary-black: #1a1a1a;
            --deep-red: #dc2626;
            --bright-red: #ef4444;
            --text-light: #f3f4f6;
            --text-gray: #9ca3af;
            --glass-bg: rgba(10, 10, 10, 0.8);
        }

        body {
            font-family: 'Montserrat', sans-serif;
            background: var(--primary-black);
            color: var(--text-light);
            overflow-x: hidden;
            scroll-behavior: smooth;
        }

        /* Header Styles */
        .header {
            position: fixed;
            top: 0;
            width: 100%;
            z-index: 1000;
            background: var(--glass-bg);
            backdrop-filter: blur(20px);
            transition: all 0.3s ease;
            border-bottom: 1px solid rgba(220, 38, 38, 0.1);
        }

        .header.scrolled {
            background: rgba(10, 10, 10, 0.95);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
        }

        .nav-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1rem 5%;
            max-width: 1400px;
            margin: 0 auto;
        }

        .nav-left, .nav-right {
            display: flex;
            align-items: center;
            gap: 2rem;
        }

        .logo {
            font-size: 2rem;
            font-weight: 800;
            color: var(--bright-red);
            text-decoration: none;
            letter-spacing: -1px;
        }

        .nav-link {
            color: var(--text-light);
            text-decoration: none;
            font-weight: 500;
            transition: all 0.3s ease;
            position: relative;
            padding: 0.5rem 0;
        }

        .nav-link::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--deep-red);
            transition: width 0.3s ease;
        }

        .nav-link:hover::after {
            width: 100%;
        }

        .nav-link:hover {
            color: var(--bright-red);
        }

        /* Hero Section */
        .hero {
            height: 100vh;
            position: relative;
            display: flex;
            align-items: center;
            justify-content: center;
            overflow: hidden;
        }

        .hero-bg {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(135deg, var(--primary-black) 0%, #1f1f1f 50%, var(--primary-black) 100%);
        }

        .particles {
            position: absolute;
            width: 100%;
            height: 100%;
            overflow: hidden;
        }

        .particle {
            position: absolute;
            width: 3px;
            height: 3px;
            background: var(--deep-red);
            border-radius: 50%;
            opacity: 0.6;
            animation: float 15s infinite linear;
            box-shadow: 0 0 10px var(--deep-red);
        }

        @keyframes float {
            0% {
                transform: translateY(100vh) translateX(0) scale(0);
                opacity: 0;
            }
            10% {
                opacity: 0.6;
                transform: scale(1);
            }
            90% {
                opacity: 0.6;
            }
            100% {
                transform: translateY(-100vh) translateX(100px) scale(0);
                opacity: 0;
            }
        }
/* ----- hero logo ----- */
.hero-logo{
  width: 280px;                 /* ilk dev ebat */
  height: auto;
  margin-bottom: 1.5rem;
  opacity: 0;                   /* GSAP ile görünür yapılacak */
  transform: scale(2);          /* büyük başlasın */
  filter: drop-shadow(0 0 20px rgba(220,38,38,.6));
  transition: none;             /* GSAP yönetecek */
}

/* ----- yazılar ----- */
.hero-title,
.hero-subtitle{
  opacity: 0;                   /* GSAP ile görünür yapılacak */
  transform: translateY(30px);
}

/* mobil küçültme */
@media (max-width: 768px){
  .hero-logo{ width: 180px; }
}
        .hero-content {
            text-align: center;
            z-index: 2;
            position: relative;
        }

        .hero-title {
            font-size: clamp(4rem, 10vw, 8rem);
            font-weight: 800;
            letter-spacing: -0.02em;
            margin-bottom: 1rem;
            background: linear-gradient(135deg, var(--text-light) 0%, var(--bright-red) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            opacity: 0;
            transform: scale(0.8);
        }

        .hero-subtitle {
            font-size: 1.5rem;
            color: var(--text-gray);
            font-weight: 300;
            opacity: 0;
            transform: translateY(30px);
        }

        /* Parallax Slider */
        .parallax-slider {
            position: relative;
            height: 100vh;
            overflow: hidden;
            margin-top: -1px;
        }

        .slide {
            position: absolute;
            width: 100%;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .slide-bg {
            position: absolute;
            width: 120%;
            height: 120%;
            background-size: cover;
            background-position: center;
            will-change: transform;
        }

        .slide-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 800px;
            padding: 2rem;
        }

        .slide-title {
            font-size: 3rem;
            font-weight: 700;
            margin-bottom: 1rem;
            opacity: 0;
            transform: translateY(50px);
        }

        .slide-description {
            font-size: 1.2rem;
            color: var(--text-gray);
            margin-bottom: 2rem;
            opacity: 0;
            transform: translateY(30px);
        }

        .cta-button {
            display: inline-block;
            padding: 1rem 2.5rem;
            background: var(--deep-red);
            color: white;
            text-decoration: none;
            border-radius: 50px;
            font-weight: 600;
            transition: all 0.3s ease;
            opacity: 0;
            transform: translateY(20px);
        }

        .cta-button:hover {
            background: var(--bright-red);
            transform: translateY(-2px);
            box-shadow: 0 10px 30px rgba(220, 38, 38, 0.3);
        }

        /* Content Sections */
        .content-section {
            padding: 5rem 5%;
            max-width: 1400px;
            margin: 0 auto;
        }

        .section-title {
            font-size: 2.5rem;
            font-weight: 700;
            margin-bottom: 3rem;
            text-align: center;
            background: linear-gradient(135deg, var(--text-light) 0%, var(--bright-red) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        /* Video Grid */
        .video-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
            margin-bottom: 5rem;
        }

        .video-card {
  background: #000;
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 4px 15px rgba(0, 0, 0, .4);
  transition: transform .3s ease;
}
.video-card:hover {
  transform: translateY(-4px);
}
.video-card iframe {
  width: 100%;
  aspect-ratio: 16 / 9;
  border: none;
}
.video-info {
  padding: 12px 14px 16px;
  color: #fff;
}
.video-title {
  font-size: 1rem;
  margin: 0 0 4px;
}
.video-description {
  font-size: .85rem;
  opacity: .75;
  margin: 0;
}

        /* Modal */
        .modal {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.9);
            z-index: 2000;
            align-items: center;
            justify-content: center;
        }

        .modal.active {
            display: flex;
        }

        .modal-content {
            position: relative;
            width: 90%;
            max-width: 1000px;
            background: var(--secondary-black);
            border-radius: 20px;
            overflow: hidden;
        }

        .modal-close {
            position: absolute;
            top: 1rem;
            right: 1rem;
            font-size: 2rem;
            color: white;
            cursor: pointer;
            z-index: 2001;
            background: rgba(0, 0, 0, 0.5);
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all 0.3s ease;
        }

        .modal-close:hover {
            background: var(--deep-red);
        }

        .video-player {
            width: 100%;
            height: 500px;
            background: black;
        }

        /* Responsive */
        @media (max-width: 768px) {
            .nav-container {
                padding: 1rem 3%;
            }

            .nav-left, .nav-right {
                gap: 1rem;
            }

            .nav-link {
                font-size: 0.9rem;
            }

            .hero-title {
                font-size: 3rem;
            }

            .content-section {
                padding: 3rem 3%;
            }

            .video-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
        }

        /* Loading Animation */
        .loading-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: var(--primary-black);
            z-index: 3000;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: opacity 0.5s ease;
        }

        .loading-spinner {
            width: 50px;
            height: 50px;
            border: 3px solid var(--secondary-black);
            border-top: 3px solid var(--deep-red);
            border-radius: 50%;
            animation: spin 1s linear infinite;
        }

        @keyframes spin {
            0% { transform: rotate(0deg); }
            100% { transform: rotate(360deg); }
        }
        .site-footer {
    background: #a21010;
    color: #FFFFFF;
    text-align: center;
    padding: 20px 0;
    margin-top: 20px;
}

.site-footer p {
    color: #FFFFFF;
    margin: 5px 0 15px;
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-top: 10px;
}

.social-links a,
.social-links a i,
.social-links a svg {
    color: #FFFFFF !important;
    font-size: 22px;
    text-decoration: none;
    transition: color 0.3s;
}

.social-links a:hover,
.social-links a:hover i,
.social-links a:hover svg {
    color: #000 !important;
}

.scrolltotop {
    animation-name: appear;
    animation-timeline: scroll(y);
}

@keyframes appear {
    0% {
        opacity: 0;
        display: none;
        position: fixed;
    }

    3% {
        opacity: 1;
        display: block;
    }

    3.5% {
        opacity: 1;
        display: block;
    }

    100% {
        opacity: 1;
        display: block;
        position: fixed;
    }
}
.logo {
    display: flex;
    align-items: center;
}

.logo img {
    height: 80px;
    transition: transform 0.3s;
}

.logo img:hover {
    transform: scale(1.1);
}
/* ========== VIDEO CONTAINER (CARD) TASARIMI ========== */
.video-card {
  position: relative;
  background: #111;               /* arka plan */
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 4px 15px rgba(0, 0, 0, .35);
  transition: transform .3s ease, box-shadow .3s ease;
}

/* hover hafif kaldırma */
.video-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, .5);
}

/* iframe’i card’a tam oturt */
.video-card iframe {
  width: 100%;
  aspect-ratio: 16 / 9;   /* yüksekliği otomatik 16:9 yapar */
  display: block;
  border: none;
}

/* başlık / açıklama */
.video-info {
  padding: 12px 14px 16px;
  color: #fff;
}
.video-title {
  font-size: 1.05rem;
  font-weight: 600;
  margin: 0 0 4px;
  line-height: 1.25;
}
.video-description {
  font-size: .85rem;
  opacity: .75;
  margin: 0;
}

/* ========== GRID DÜZENİ (5→1) ========== */
.video-grid {
  display: grid;
  gap: 25px;
  grid-template-columns: repeat(5, 1fr);
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 15px;
}

/* responsive kırılımlar */
@media (max-width: 1200px) { .video-grid { grid-template-columns: repeat(4, 1fr); } }
@media (max-width: 992px)  { .video-grid { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 768px)  { .video-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 480px)  { .video-grid { grid-template-columns: 1fr; } }
.btn-next {
  margin-top: 10px;
  padding: 8px 18px;
  background: #e00;
  color: #fff;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  font-size: .95rem;
  transition: background .3s;
}
.btn-next:hover { background: #c00; }
/* ===== VIDEO SECTION ===== */
.video-section {
  padding: 40px 15px;
  background: #111;
}
.section-title {
  text-align: center;
  font-size: 2rem;
  margin-bottom: 30px;
  color: #fff;
}

.video-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 25px;
  max-width: 1400px;
  margin: 0 auto;
}

.video-card {
  background: #000;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 4px 15px rgba(0, 0, 0, .35);
  transition: transform .3s ease;
}
.video-card:hover {
  transform: translateY(-4px);
}

.video-card iframe {
  width: 100%;
  aspect-ratio: 16 / 9;
  border: none;
}

.video-info {
  padding: 14px;
  color: #fff;
}
.video-title {
  font-size: 1rem;
  margin: 0 0 6px;
}
.video-description {
  font-size: .85rem;
  opacity: .75;
  margin: 0 0 10px;
}

.btn-next {
  margin-top: 6px;
  padding: 6px 14px;
  background: #e00;
  color: #fff;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  font-size: .9rem;
  transition: background .3s;
}
.btn-next:hover {
  background: #c00;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1200px) { .video-grid { grid-template-columns: repeat(4, 1fr); } }
@media (max-width: 992px)  { .video-grid { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 768px)  { .video-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 480px)  { .video-grid { grid-template-columns: 1fr; } }
/* ========== PARALLAX KARTLAR ========== */

.parallax-slider {
    padding: 60px 0; /* Üst ve alt boşluk */
    background-color: #1a1a1a; /* Arka plan rengi */
    text-align: center;
}

.parallax-cards-container {
    display: flex; /* Kartları yan yana dizer */
    justify-content: center; /* Ortalar */
    gap: 30px; /* Kartlar arası boşluk */
    max-width: 1200px; /* Maksimum genişlik */
    margin: 0 auto; /* Konteyneri ortalar */
    padding: 0 20px;
}

.parallax-card {
    position: relative;
    flex: 1; /* Her kartın eşit genişlikte olmasını sağlar */
    min-height: 500px; /* Kartın minimum yüksekliği */
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    text-decoration: none; /* Bağlantı stilini kaldır */
    color: white;
    cursor: pointer;
}

.parallax-card:hover {
    transform: translateY(-10px); /* Hafifçe yukarı kaydır */
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.7);
}

.card-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    transition: transform 1.5s ease-out; /* Hafif Parallax efekti */
    z-index: 1;
}

.parallax-card:hover .card-bg {
    transform: scale(1.05); /* Hover'da görseli hafifçe büyüt */
}

.card-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    /* Arka plan renkleri HTML içinde tanımlandı, burası sadece genel katman */
    z-index: 2;
    transition: background-color 0.3s ease;
}

.card-content {
    position: relative;
    z-index: 3;
    padding: 30px;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: flex-end; /* İçeriği alta hizala */
    text-align: left;
}

.card-title {
    font-size: 2.2rem;
    margin-bottom: 10px;
    font-weight: 700;
}

.card-description {
    font-size: 1rem;
    margin-bottom: 20px;
    font-weight: 300;
    line-height: 1.4;
}

.cta-link {
    font-weight: 600;
    display: inline-block;
    color: #fff;
    border-bottom: 2px solid #fff;
    padding-bottom: 3px;
    transition: border-bottom-color 0.3s ease;
}

.parallax-card:hover .cta-link {
    border-bottom-color: #ff9900; /* Hover'da rengi değiştir */
}

/* 768px ve daha küçük ekranlar için: Kartları alt alta yığınla */
@media (max-width: 768px) {
    .parallax-cards-container {
        flex-direction: column;
    }
    .parallax-card {
        min-height: 300px;
        margin-bottom: 20px;
    }
}