/* Hauptbühne */

.retrobass-stage {
    position: relative;
    isolation: isolate;

    display: grid;
    grid-template-rows: 1fr auto;

    min-height: 100vh;
    min-height: 100svh;

    overflow: hidden;

    background:
        linear-gradient(
            180deg,
            rgba(10, 7, 5, 0.18) 0%,
            rgba(10, 7, 5, 0.08) 42%,
            rgba(10, 7, 5, 0.62) 100%
        ),
        var(--color-room-dark);
}

/* Verschwommene Retro-Tapete */

.retrobass-stage::before {
    content: "";

    position: absolute;
    z-index: -3;
    inset: -36px;

    background-image:
        linear-gradient(
            90deg,
            rgba(21, 11, 7, 0.36),
            rgba(21, 11, 7, 0.06) 46%,
            rgba(21, 11, 7, 0.30)
        ),
        url("/assets/images/retrobass-tapete.jpg");

    background-repeat: no-repeat, repeat;
    background-position: center, center;
    background-size: cover, 570px auto;

    filter:
        blur(9px)
        saturate(0.82)
        brightness(0.62);

    transform: scale(1.06);
}

/* Abdunklung für bessere Produkttiefe */

.retrobass-stage::after {
    content: "";

    position: absolute;
    z-index: -2;
    inset: 0;

    pointer-events: none;

    background:
        radial-gradient(
            circle at 50% 44%,
            transparent 0%,
            rgba(7, 5, 4, 0.05) 37%,
            rgba(7, 5, 4, 0.55) 100%
        ),
        linear-gradient(
            180deg,
            rgba(5, 4, 3, 0.20),
            transparent 35%,
            rgba(5, 4, 3, 0.32)
        );
}

/* Warme Lichtstimmungen */

.room-light {
    position: absolute;
    z-index: -1;

    width: 36rem;
    aspect-ratio: 1;

    border-radius: 50%;

    pointer-events: none;

    filter: blur(70px);
    opacity: 0.30;
}

.room-light--left {
    top: 10%;
    left: -18rem;

    background: rgba(220, 114, 35, 0.65);
}

.room-light--right {
    top: 22%;
    right: -23rem;

    background: rgba(181, 93, 34, 0.35);
}

/* Produktbereich */

.product-stage {
    position: relative;
    z-index: 2;

    display: flex;
    align-items: flex-end;
    justify-content: center;

    width: min(100%, var(--stage-width));
    min-height: 76vh;
    margin-inline: auto;
    padding:
        clamp(5rem, 12vh, 9rem)
        clamp(1.25rem, 4vw, 4rem)
        clamp(1rem, 3vh, 2.5rem);
}

.product-position {
    position: relative;

    display: flex;
    align-items: flex-end;
    justify-content: center;

    width: 100%;
    max-width: 1080px;
    min-height: 470px;
}

/*
    Nur Orientierung für Phase 1.
    Dieser Platzhalter verschwindet in Phase 2.
*/

.receiver-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;

    width: min(78vw, 760px);
    aspect-ratio: 1.6 / 1;

    border: 1px dashed rgba(224, 169, 100, 0.30);
    border-radius: 22px;

    color: rgba(239, 207, 165, 0.45);

    background:
        linear-gradient(
            145deg,
            rgba(42, 23, 13, 0.22),
            rgba(12, 9, 7, 0.12)
        );

    box-shadow:
        0 30px 80px rgba(0, 0, 0, 0.30),
        inset 0 1px 0 rgba(255, 255, 255, 0.03);

    backdrop-filter: blur(2px);
}

.receiver-placeholder span {
    font-size: clamp(1rem, 2.2vw, 1.55rem);
    font-weight: 600;
    letter-spacing: 0.22em;
}

.receiver-placeholder small {
    margin-top: 0.7rem;

    color: rgba(239, 207, 165, 0.28);

    font-size: 0.65rem;
    letter-spacing: 0.35em;
}

/* Holzfläche */

.wooden-surface {
    position: relative;
    z-index: 3;

    width: 100%;
    height: clamp(120px, 18vh, 210px);

    overflow: hidden;

    background:
        linear-gradient(
            90deg,
            rgba(20, 10, 5, 0.62),
            transparent 28%,
            rgba(255, 185, 95, 0.05) 52%,
            transparent 72%,
            rgba(20, 10, 5, 0.70)
        ),
        repeating-linear-gradient(
            2deg,
            rgba(255, 208, 142, 0.035) 0,
            rgba(255, 208, 142, 0.035) 1px,
            transparent 1px,
            transparent 7px
        ),
        linear-gradient(
            180deg,
            var(--color-wood-light) 0%,
            var(--color-wood-mid) 24%,
            var(--color-wood-dark) 100%
        );

    box-shadow:
        inset 0 2px 0 rgba(255, 212, 151, 0.16),
        inset 0 18px 30px rgba(0, 0, 0, 0.28);
}

.wooden-surface::before {
    content: "";

    position: absolute;
    inset: 0;

    opacity: 0.44;

    background:
        repeating-radial-gradient(
            ellipse at 30% 10%,
            transparent 0,
            transparent 18px,
            rgba(23, 10, 4, 0.25) 20px,
            transparent 24px
        );

    transform: scaleX(1.4);
}

.wooden-surface__light {
    position: absolute;
    top: 0;
    left: 50%;

    width: min(900px, 85vw);
    height: 3px;

    background:
        linear-gradient(
            90deg,
            transparent,
            rgba(255, 215, 160, 0.34),
            transparent
        );

    transform: translateX(-50%);
}

.wooden-surface__shadow {
    position: absolute;
    top: 0;
    left: 50%;

    width: min(820px, 76vw);
    height: 60px;

    border-radius: 50%;

    background: rgba(0, 0, 0, 0.50);

    filter: blur(24px);
    transform: translate(-50%, -45%);
}

/* Kleinere Bildschirme */

@media (max-width: 720px) {
    .product-stage {
        min-height: 72vh;
        padding-inline: 1rem;
    }

    .product-position {
        min-height: 300px;
    }

    .receiver-placeholder {
        width: min(92vw, 600px);
        border-radius: 16px;
    }

    .retrobass-stage::before {
        background-size: cover, 390px auto;
    }
}

/* Bewegungsreduktion */

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        scroll-behavior: auto !important;
    }
}