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

html,
body {
    height: 100%;
    width: 100%;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background: #000;
    color: #fff;
    overflow: hidden;
}

.video-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    /* Videonun görünmesi için negatif z-index'i kaldırdık */
    z-index: 0;
    background: #000;
}

.main-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 64px;
    background: rgba(0, 0, 0, 0.96);
    display: flex;
    align-items: center;
    z-index: 10;
    transform: translateY(-100%);
    opacity: 0;
    animation: headerSlideDown 600ms ease-out forwards;
    animation-delay: 3s; /* header 3 sn sonra görünsün */
}

.header-inner {
    width: 100%;
    max-width: none;
    margin: 0;
    padding: 0 24px 0 8px;
    display: flex;
    align-items: center;
    justify-content: flex-start;
}

.header-logo img {
    height: 60px;
    width: auto;
}

.video-bg video {
    position: absolute;
    top: 50%;
    left: 50%;
    min-width: 100%;
    min-height: 100%;
    width: auto;
    height: auto;
    transform: translate(-50%, -50%);
    object-fit: cover;
    object-position: center center;
}

/* Mobilde arka plan videosu ekranı tam doldursun, boşluk kalmasın */
@media (max-width: 768px) {
    .video-bg {
        min-height: 100vh;
        min-height: -webkit-fill-available;
    }

    .video-bg video {
        top: 0;
        left: 0;
        min-width: 100%;
        min-height: 100%;
        width: 100%;
        height: 100%;
        transform: none;
        object-fit: cover;
        object-position: center center;
    }
}

.overlay {
    position: fixed;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    pointer-events: none;
}

.content-wrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 32px;
    max-width: 1200px;
    width: 100%;
    padding: 0 24px;
}

.title-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transform: translateY(-20px);
    animation: titleDrop 700ms ease-out forwards;
    animation-delay: 2.7s;
}

.title-icon img {
    max-width: 120px;
    height: auto;
}

.title {
    font-size: clamp(24px, 3vw, 32px);
    letter-spacing: 0.03em;
    text-transform: uppercase;
    text-align: center;
    text-shadow: 0 4px 24px rgba(0, 0, 0, 0.8);
    opacity: 0;
    transform: translateY(-30px);
    animation: titleDrop 700ms ease-out forwards;
    animation-delay: 3s;
}

.options {
    display: flex;
    gap: 32px;
    width: 100%;
    max-width: 900px;
    justify-content: center;
}

.option {
    width: 140px;
    height: 140px;
    border-radius: 18px;
    border: 1px solid rgba(255, 255, 255, 0.4);
    background: transparent;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: clamp(18px, 2vw, 22px);
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: #f5f5f5;
    cursor: pointer;
    pointer-events: none;
    box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.25);
    opacity: 0;
    transform: translateX(0);
    transition: transform 180ms ease-out, box-shadow 180ms ease-out, background 180ms ease-out;
}

.option-left {
    animation: optionLeftIn 700ms cubic-bezier(0.2, 0.8, 0.3, 1) forwards;
    animation-delay: 3.15s;
}

.option-right {
    animation: optionRightIn 700ms cubic-bezier(0.2, 0.8, 0.3, 1) forwards;
    animation-delay: 3.25s;
}

.overlay.menu-ready .option {
    pointer-events: auto;
}

.option:hover {
    transform: translateY(-4px);
    box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.5);
    background: transparent;
}

.option:active {
    transform: translateY(-1px);
    box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.6);
}

@keyframes titleDrop {
    0% {
        opacity: 0;
        transform: translateY(-30px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes optionLeftIn {
    0% {
        opacity: 0;
        transform: translateX(-80px);
    }
    100% {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes optionRightIn {
    0% {
        opacity: 0;
        transform: translateX(80px);
    }
    100% {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes headerSlideDown {
    0% {
        transform: translateY(-100%);
        opacity: 0;
    }
    100% {
        transform: translateY(0);
        opacity: 1;
    }
}

@media (max-width: 768px) {
    .main-header {
        height: 52px;
    }

    .header-inner {
        padding-left: 10px;
    }

    .header-logo img {
        height: 52px; /* mobilde biraz daha büyük ve net */
    }

    .options {
        flex-direction: row;      /* mobilde de yan yana */
        align-items: center;
        justify-content: center;  /* tam ortada */
        gap: 24px;
    }

    .option {
        width: 120px;
        height: 120px;
        font-size: 16px;
    }
}