/* 
   scroll indicator - scroll ui elements
  */

.scroll-indicator {
    position: absolute;
    bottom: 3.5rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.2rem;
    cursor: pointer;
    z-index: 10;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    opacity: 0.8;
    animation: bounceTotal 2s infinite;
}

.scroll-indicator:hover {
    opacity: 1;
    transform: translateX(-50%) translateY(-5px);
}

/* base bounce (desktop) - includes centering */
@keyframes bounceTotal {

    0%,
    20%,
    50%,
    80%,
    100% {
        transform: translateX(-50%) translateY(0);
    }

    40% {
        transform: translateX(-50%) translateY(-10px);
    }

    60% {
        transform: translateX(-50%) translateY(-5px);
    }
}

/* mobile bounce - no horizontal centering needed (flex handles it) */
@keyframes bounceMobile {

    0%,
    20%,
    50%,
    80%,
    100% {
        transform: translateY(0) scale(0.9);
    }

    40% {
        transform: translateY(-10px) scale(0.9);
    }

    60% {
        transform: translateY(-5px) scale(0.9);
    }
}

.scroll-text {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    letter-spacing: 0.35em;
    color: var(--muted-text);
    text-transform: uppercase;
    font-weight: 500;
}

.scroll-mouse {
    width: 24px;
    height: 40px;
    border: 2px solid var(--border-color);
    border-radius: 12px;
    position: relative;
}

.scroll-wheel {
    width: 4px;
    height: 8px;
    background: var(--accent-color);
    border-radius: 2px;
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    animation: scrollWheelMove 2s cubic-bezier(0.76, 0, 0.24, 1) infinite;
}

@keyframes scrollWheelMove {
    0% {
        opacity: 0;
        transform: translateX(-50%) translateY(-8px);
    }

    20% {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }

    50% {
        opacity: 1;
        transform: translateX(-50%) translateY(14px);
    }

    100% {
        opacity: 0;
        transform: translateX(-50%) translateY(22px);
    }
}

.scroll-indicator::after {
    content: '';
    position: absolute;
    bottom: -30px;
    width: 1px;
    height: 50px;
    background: linear-gradient(to bottom, var(--accent-color), transparent);
    animation: scrollLineMove 2s infinite;
}

@keyframes scrollLineMove {
    0% {
        transform: scaleY(0);
        transform-origin: top;
        opacity: 0;
    }

    50% {
        transform: scaleY(1);
        transform-origin: top;
        opacity: 0.5;
    }

    51% {
        transform: scaleY(1);
        transform-origin: bottom;
        opacity: 0.5;
    }

    100% {
        transform: scaleY(0);
        transform-origin: bottom;
        opacity: 0;
    }
}

/* mobile specific overrides */
@media (max-width: 768px) {



    .hero-display-text {
        font-size: 2.8rem;
        line-height: 1.1;
        margin-bottom: 1.5rem;
    }

    .hero-display-text .sub-hero {
        font-size: 1.5rem;
        margin-top: 0.5rem;
    }

    /* stack buttons */
    .hero-cta-group {
        flex-direction: column;
        gap: 1rem;
        width: 100%;
        max-width: 320px;
        margin: 2rem auto 0;
        padding: 0 1rem;
    }

    .full-width-mobile {
        width: 100%;
        justify-content: center;
        padding: 1rem 1.5rem;
        height: auto;
        min-height: 52px;
        box-sizing: border-box;
    }

    .btn-primary.full-width-mobile {
        gap: 1rem;
        font-size: 0.75rem;
        letter-spacing: 0.1em;
    }

    .btn-secondary.full-width-mobile {
        font-size: 0.75rem;
        letter-spacing: 0.1em;
        padding: 1rem 1.5rem;
        text-align: center;
        display: flex;
        align-items: center;
    }

    /* mobile text animation optimizations - disable blur for performance */
    .text-slide-out {
        animation: mobileTextOut 0.4s ease forwards;
    }

    .text-slide-in {
        animation: mobileTextIn 0.4s ease forwards;
    }

    @keyframes mobileTextOut {
        0% {
            opacity: 1;
            transform: translateY(0);
        }

        100% {
            opacity: 0;
            transform: translateY(-15px);
        }
    }

    @keyframes mobileTextIn {
        0% {
            opacity: 0;
            transform: translateY(15px);
        }

        100% {
            opacity: 1;
            transform: translateY(0);
        }
    }

    .text-reveal {
        animation: mobileReveal 0.6s ease forwards;
    }

    @keyframes mobileReveal {
        from {
            opacity: 0;
            transform: translateY(20px);
        }

        to {
            opacity: 1;
            transform: translateY(0);
        }
    }

    #hero-title,
    #hero-subtitle {
        will-change: transform, opacity;
        backface-visibility: hidden;
        -webkit-backface-visibility: hidden;
    }


    .scroll-indicator {
        display: flex;
        position: relative;
        bottom: auto;
        left: auto;
        transform: none;
        margin-top: 3rem;
        /* brought closer to buttons */
        margin-bottom: 4rem;
        /* generous spacing */
        width: 100%;
        animation: bounceMobile 2s infinite;
        justify-content: center;
        align-items: center;
        opacity: 1;
        /* full visibility */
    }

    /* make the mouse icon dark and sharp on mobile */
    .scroll-indicator .scroll-mouse {
        border-color: #000;
        border-width: 2px;
        opacity: 1;
    }

    .scroll-indicator:hover {
        transform: translateY(-5px);
    }

    .scroll-text {
        display: none !important;
        /* hide text on mobile to fix layout */
    }

    .scroll-indicator::after {
        display: none;
    }

    #how-content-area {
        margin-top: 6rem;
        /* push next section way down */
        padding-top: 2rem;
    }

    .hero-centered-content {
        min-height: auto;
        padding-bottom: 5rem;
        display: flex;
        flex-direction: column;
        justify-content: flex-start;
        /* stop vertical centering pulling items up */
    }
}