:root {
    --rack-green: #2ecc71;
    --rack-green-bright: #54f59a;
    --rack-ink: #080b09;
    --rack-panel: rgba(11, 16, 13, 0.78);
    --rack-line: rgba(255, 255, 255, 0.12);
    --rack-muted: rgba(235, 242, 238, 0.62);
}

.rack-experience {
    position: relative;
    z-index: 1;
    height: 560vh;
    padding: 0 !important;
    color: #f7faf8;
    background: var(--rack-ink);
    isolation: isolate;
}

.rack-story-sticky {
    position: sticky;
    top: 0;
    width: 100%;
    height: 100vh;
    height: 100svh;
    overflow: hidden;
    background:
        radial-gradient(circle at 50% 48%, rgba(46, 204, 113, 0.13), transparent 31%),
        radial-gradient(circle at 86% 14%, rgba(46, 204, 113, 0.07), transparent 30%),
        linear-gradient(135deg, #111714 0%, #080b09 55%, #050706 100%);
}

.rack-story-sticky::before {
    content: "";
    position: absolute;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    opacity: 0.34;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
    background-size: 64px 64px;
    mask-image: radial-gradient(circle at center, #000 20%, transparent 78%);
}

.rack-story-sticky::after {
    content: "";
    position: absolute;
    inset: 0;
    z-index: 2;
    pointer-events: none;
    box-shadow: inset 0 0 180px rgba(0, 0, 0, 0.78);
    background: linear-gradient(180deg, rgba(0, 0, 0, 0.32), transparent 18%, transparent 72%, rgba(0, 0, 0, 0.62));
}

.rack-render-model {
    position: absolute;
    top: 50%;
    left: 50%;
    z-index: 1;
    width: min(1360px, 90vw);
    height: min(760px, 74vh);
    opacity: 1;
    transform:
        translate3d(calc(-50% + var(--rack-x, 0px)), calc(-50% + var(--rack-y, 0px)), 0)
        perspective(1400px)
        rotateX(var(--rack-rx, 0deg))
        rotateY(var(--rack-ry, 0deg))
        scale(var(--rack-scale, 0.88));
    transform-style: preserve-3d;
    filter: drop-shadow(0 40px 58px rgba(0, 0, 0, 0.65));
    will-change: transform, opacity, filter;
    transition: opacity 0.8s ease;
}

.rack-render-model canvas,
.rack-render-model img {
    position: relative;
    z-index: 1;
    display: block;
    width: 100%;
    height: 100%;
    object-fit: contain;
    border-radius: 44px;
    -webkit-mask-image: radial-gradient(ellipse 72% 68% at 50% 52%, #000 48%, rgba(0,0,0,.92) 63%, transparent 93%);
    mask-image: radial-gradient(ellipse 72% 68% at 50% 52%, #000 48%, rgba(0,0,0,.92) 63%, transparent 93%);
}

.rack-render-model canvas {
    touch-action: pan-y;
    cursor: grab;
    border-radius: 44px;
}

.rack-render-model canvas:active { cursor: grabbing; }
.rack-render-model canvas {
    position: absolute;
    inset: 0;
    opacity: 1;
    transition: opacity .45s ease;
}
.rack-experience.has-fallback #rack3DCanvas { opacity: .12; }

.rack-render-aura {
    position: absolute;
    z-index: 0;
    inset: 18% 10%;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(46, 204, 113, 0.15), rgba(46, 204, 113, 0.025) 48%, transparent 72%);
    filter: blur(30px);
    transform: translateZ(-40px);
}

.rack-experience.is-ready .rack-render-model { opacity: 1; }

.rack-topline {
    position: absolute;
    top: clamp(86px, 10vh, 116px);
    left: 50%;
    z-index: 5;
    width: min(1240px, calc(100% - 96px));
    display: flex;
    justify-content: space-between;
    align-items: center;
    transform: translateX(-50%);
    font-size: 0.68rem;
    font-weight: 600;
    letter-spacing: 0.28em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.48);
}

.rack-topline strong {
    display: flex;
    align-items: center;
    gap: 11px;
    color: var(--rack-green-bright);
    font-weight: 600;
}

.rack-topline strong::before {
    content: "";
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--rack-green-bright);
    box-shadow: 0 0 18px rgba(84, 245, 154, 0.9);
}

.rack-story-panel {
    position: absolute;
    top: 50%;
    z-index: 6;
    width: min(430px, 34vw);
    padding: 26px 30px;
    opacity: 0;
    pointer-events: none;
    will-change: opacity, transform;
    isolation: isolate;
}

.rack-story-panel[data-side="left"] { left: max(48px, calc((100vw - 1440px) / 2)); }
.rack-story-panel[data-side="right"] { right: max(48px, calc((100vw - 1440px) / 2)); text-align: right; }

.rack-story-panel[data-side="right"] .rack-specs li { justify-content: flex-end; }

.rack-story-hero {
    position: absolute;
    top: 50%;
    left: max(48px, calc((100vw - 1440px) / 2));
    z-index: 6;
    width: min(720px, 54vw);
    padding: 34px 36px;
    opacity: 0;
    will-change: opacity, transform;
    isolation: isolate;
}

.rack-story-hero::before,
.rack-story-panel::before {
    content: "";
    position: absolute;
    inset: 0;
    z-index: -1;
    border-radius: 22px;
    pointer-events: none;
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
}

.rack-story-hero::before,
.rack-story-panel[data-side="left"]::before {
    border-left: 1px solid rgba(84, 245, 154, 0.22);
    background:
        radial-gradient(circle at 10% 24%, rgba(46, 204, 113, 0.10), transparent 52%),
        linear-gradient(90deg, rgba(12, 15, 14, 0.86) 0%, rgba(22, 25, 24, 0.67) 54%, rgba(46, 204, 113, 0.07) 78%, transparent 100%);
    box-shadow: -24px 0 70px rgba(0, 0, 0, 0.24);
}

.rack-story-panel[data-side="right"]::before {
    border-right: 1px solid rgba(84, 245, 154, 0.22);
    background:
        radial-gradient(circle at 90% 24%, rgba(46, 204, 113, 0.10), transparent 52%),
        linear-gradient(270deg, rgba(12, 15, 14, 0.86) 0%, rgba(22, 25, 24, 0.67) 54%, rgba(46, 204, 113, 0.07) 78%, transparent 100%);
    box-shadow: 24px 0 70px rgba(0, 0, 0, 0.24);
}

.rack-kicker,
.rack-stage {
    display: flex;
    align-items: center;
    gap: 13px;
    margin-bottom: 20px;
    color: var(--rack-green-bright);
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.3em;
    text-transform: uppercase;
}

.rack-story-panel[data-side="right"] .rack-stage { justify-content: flex-end; }

.rack-kicker::before,
.rack-stage::before {
    content: "";
    width: 42px;
    height: 1px;
    background: linear-gradient(90deg, var(--rack-green-bright), transparent);
}

.rack-story-hero h2,
.rack-story-panel h3 {
    margin: 0;
    color: #fff;
    font-family: 'Bebas Neue', sans-serif;
    font-weight: 400;
    line-height: 0.92;
    text-transform: uppercase;
    text-wrap: balance;
    text-shadow: 0 4px 24px rgba(0, 0, 0, 0.92);
}

.rack-story-hero h2 {
    max-width: 780px;
    font-size: clamp(4rem, 8vw, 8.4rem);
    letter-spacing: 0.015em;
}

.rack-story-hero h2 span,
.rack-story-panel h3 span {
    display: block;
    color: var(--rack-green);
    text-shadow: 0 0 44px rgba(46, 204, 113, 0.28);
}

.rack-story-hero p {
    max-width: 590px;
    margin: 26px 0 0;
    color: rgba(245, 249, 247, 0.7);
    font-size: clamp(0.94rem, 1.2vw, 1.08rem);
    line-height: 1.85;
    text-shadow: 0 2px 13px rgba(0, 0, 0, 0.9);
}

.rack-story-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin-top: 30px;
}

.rack-story-actions a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    min-height: 52px;
    padding: 0 24px;
    border: 1px solid rgba(255, 255, 255, 0.18);
    border-radius: 5px;
    color: #fff;
    background: rgba(7, 11, 8, 0.42);
    backdrop-filter: blur(12px);
    text-decoration: none;
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.09em;
    text-transform: uppercase;
    transition: 0.25s ease;
}

.rack-story-actions a:first-child {
    color: #051008;
    border-color: var(--rack-green);
    background: var(--rack-green);
    box-shadow: 0 14px 40px rgba(46, 204, 113, 0.24);
}

.rack-story-actions a:hover { transform: translateY(-3px); border-color: var(--rack-green); }

.rack-story-panel h3 {
    margin-bottom: 18px;
    font-size: clamp(2.7rem, 4.5vw, 4.8rem);
}

.rack-story-panel > p {
    margin: 0 0 24px;
    color: var(--rack-muted);
    font-size: 0.98rem;
    line-height: 1.78;
    text-shadow: 0 2px 12px rgba(0, 0, 0, 0.88);
}

.rack-specs { margin: 0; padding: 0; list-style: none; }

.rack-specs li {
    display: flex;
    align-items: center;
    gap: 11px;
    padding: 10px 0;
    border-top: 1px solid var(--rack-line);
    color: rgba(255, 255, 255, 0.72);
    font-size: 0.84rem;
}

.rack-specs i { color: var(--rack-green-bright); font-size: 0.68rem; }

.rack-label {
    position: absolute;
    top: 0;
    left: 0;
    z-index: 7;
    display: flex;
    align-items: center;
    gap: 10px;
    opacity: 0;
    pointer-events: none;
    will-change: transform, opacity;
}

button.rack-label {
    appearance: none;
    border: 0;
    padding: 0;
    color: inherit;
    font: inherit;
    background: transparent;
    cursor: pointer;
}

.rack-label:focus-visible .rack-label-text {
    outline: 2px solid var(--rack-green-bright);
    outline-offset: 4px;
}

.rack-info-popover {
    position: absolute;
    z-index: 14;
    left: 50%;
    top: 50%;
    width: min(390px, calc(100vw - 34px));
    padding: 24px 24px 22px;
    border: 1px solid rgba(84,245,154,.42);
    border-radius: 18px;
    background: linear-gradient(145deg, rgba(8,18,13,.97), rgba(12,31,21,.96));
    box-shadow: 0 26px 80px rgba(0,0,0,.64), 0 0 38px rgba(46,204,113,.12);
    backdrop-filter: blur(18px);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: translate(-50%, calc(-50% + 14px)) scale(.96);
    transition: opacity .25s ease, transform .25s ease, visibility .25s ease;
}
.rack-info-popover.is-open {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translate(-50%, -50%) scale(1);
}
.rack-info-close {
    position: absolute;
    top: 10px;
    right: 12px;
    width: 34px;
    height: 34px;
    border: 0;
    border-radius: 50%;
    color: #cfe3d7;
    background: rgba(255,255,255,.06);
    font-size: 1.45rem;
    cursor: pointer;
}
.rack-info-eyebrow { color: var(--rack-green-bright); font-size: .65rem; font-weight: 800; letter-spacing: .2em; text-transform: uppercase; }
.rack-info-popover h3 { margin: 12px 38px 10px 0; color: #fff; font-size: clamp(1.45rem, 3vw, 2rem); line-height: 1.05; }
.rack-info-popover p { margin: 0 0 18px; color: rgba(232,241,235,.76); font-size: .94rem; line-height: 1.62; }
.rack-info-popover a { display: inline-flex; align-items: center; gap: 10px; padding: 11px 16px; border-radius: 10px; color: #06120b; background: var(--rack-green-bright); font-size: .78rem; font-weight: 900; letter-spacing: .05em; text-decoration: none; }
.rack-info-popover a:hover { filter: brightness(1.08); transform: translateY(-1px); }

.rack-label-layer {
    position: absolute;
    inset: 0;
    z-index: 9;
    pointer-events: none;
}

.rack-label.is-left { flex-direction: row-reverse; }
.rack-label.is-left .rack-label-line {
    background: linear-gradient(270deg, var(--rack-green-bright), rgba(84,245,154,.18));
}

.rack-label-tie { left: 2.5%; top: 80%; }
.rack-label-boot { left: 20%; top: 67%; }
.rack-label-rack { left: 47%; top: 43%; }
.rack-label-motor { left: 64%; top: 51%; }

.rack-label-dot {
    position: relative;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--rack-green-bright);
    box-shadow: 0 0 18px rgba(84, 245, 154, 0.85);
}

.rack-label-dot::after {
    content: "";
    position: absolute;
    inset: -7px;
    border: 1px solid rgba(84, 245, 154, 0.45);
    border-radius: inherit;
    animation: rackPulse 1.8s ease-out infinite;
}

@keyframes rackPulse { to { transform: scale(1.8); opacity: 0; } }

.rack-label-line { width: 56px; height: 1px; background: linear-gradient(90deg, var(--rack-green-bright), rgba(84,245,154,.18)); }
.rack-label-text {
    padding: 10px 13px;
    border: 1px solid rgba(84, 245, 154, 0.38);
    border-radius: 9px;
    color: #dffbec;
    background: linear-gradient(135deg, rgba(7, 11, 9, 0.96), rgba(17, 31, 23, 0.90));
    box-shadow: 0 12px 34px rgba(0,0,0,.62), inset 0 1px rgba(255,255,255,.06);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    font-size: 0.80rem;
    font-weight: 700;
    letter-spacing: 0.13em;
    line-height: 1;
    text-shadow: 0 1px 9px rgba(0,0,0,.9);
    text-transform: uppercase;
    white-space: nowrap;
}

.rack-progress {
    position: absolute;
    top: 50%;
    right: 28px;
    z-index: 8;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 13px;
    transform: translateY(-50%);
}

.rack-progress span {
    width: 7px;
    height: 7px;
    border: 1px solid rgba(255, 255, 255, 0.35);
    border-radius: 50%;
    transition: 0.3s ease;
}

.rack-progress span.is-active {
    height: 28px;
    border-color: var(--rack-green-bright);
    border-radius: 10px;
    background: var(--rack-green-bright);
    box-shadow: 0 0 20px rgba(84, 245, 154, 0.55);
}

.rack-scroll-hint {
    position: absolute;
    bottom: 28px;
    left: 50%;
    z-index: 7;
    display: flex;
    align-items: center;
    gap: 13px;
    color: rgba(255, 255, 255, 0.42);
    font-size: 0.62rem;
    font-weight: 600;
    letter-spacing: 0.24em;
    text-transform: uppercase;
    transform: translateX(-50%);
}

.rack-scroll-hint i { color: var(--rack-green-bright); animation: rackDown 1.6s ease-in-out infinite; }
@keyframes rackDown { 50% { transform: translateY(7px); } }

.rack-loading {
    position: absolute;
    top: 50%;
    left: 50%;
    z-index: 3;
    display: flex;
    align-items: center;
    gap: 12px;
    color: rgba(255, 255, 255, 0.48);
    font-size: 0.68rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    transform: translate(-50%, -50%);
    transition: opacity 0.4s ease;
}

.rack-loading::before {
    content: "";
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.12);
    border-top-color: var(--rack-green-bright);
    border-radius: 50%;
    animation: rackSpin 0.9s linear infinite;
}

.rack-experience.is-ready .rack-loading { opacity: 0; }
.rack-experience.has-fallback .rack-loading { display: none; }
@keyframes rackSpin { to { transform: rotate(360deg); } }

.rack-experience.has-fallback {
    height: auto;
    padding: 84px 20px !important;
}

.rack-experience.has-fallback .rack-story-sticky {
    position: relative;
    height: auto;
    min-height: 820px;
    padding: 110px 0 48px;
    overflow: visible;
}

.rack-experience.has-fallback .rack-label-layer,
.rack-experience.has-fallback .rack-label,
.rack-experience.has-fallback .rack-progress,
.rack-experience.has-fallback .rack-scroll-hint { display: none; }

.rack-experience.has-fallback .rack-topline { top: 46px; }

.rack-experience.has-fallback .rack-story-hero,
.rack-experience.has-fallback .rack-story-panel,
.rack-experience.has-fallback .rack-story-panel[data-side="right"] {
    position: relative;
    top: auto;
    right: auto;
    bottom: auto;
    left: auto;
    width: min(760px, calc(100% - 40px));
    margin: 0 auto 26px;
    opacity: 1 !important;
    text-align: left;
    transform: none !important;
}

.rack-experience.has-fallback .rack-story-panel,
.rack-experience.has-fallback .rack-story-panel[data-side="right"] {
    padding: 26px;
    border: 1px solid var(--rack-line);
    border-radius: 17px;
    background: var(--rack-panel);
}

.rack-experience.has-fallback .rack-story-panel[data-side="right"] .rack-stage,
.rack-experience.has-fallback .rack-story-panel[data-side="right"] .rack-specs li { justify-content: flex-start; }

@media (max-width: 900px) {
    .rack-experience { height: 500vh; }
    .rack-topline { top: 82px; width: calc(100% - 38px); font-size: 0.56rem; }
    .rack-topline > span { display: none; }
    .rack-story-hero {
        top: 112px;
        left: 22px;
        width: calc(100% - 44px);
        padding: 24px 22px;
    }
    .rack-story-hero h2 { max-width: 520px; font-size: clamp(3.5rem, 15.5vw, 6rem); }
    .rack-story-hero p { max-width: 520px; margin-top: 18px; font-size: 0.9rem; line-height: 1.65; }
    .rack-story-actions { margin-top: 20px; }
    .rack-story-actions a { min-height: 46px; padding: 0 17px; font-size: 0.68rem; }
    .rack-story-panel,
    .rack-story-panel[data-side="right"] {
        top: auto;
        right: 18px;
        bottom: 30px;
        left: 18px;
        width: auto;
        padding: 22px 20px 18px;
        border: 1px solid rgba(255, 255, 255, 0.1);
        border-radius: 17px;
        text-align: left;
        background:
            radial-gradient(circle at 18% 12%, rgba(46, 204, 113, 0.10), transparent 48%),
            linear-gradient(145deg, rgba(18, 22, 20, 0.84), rgba(5, 8, 6, 0.72));
        box-shadow: 0 22px 70px rgba(0, 0, 0, 0.36);
        backdrop-filter: blur(9px);
        -webkit-backdrop-filter: blur(9px);
        max-height: 42vh;
        overflow-y: auto;
    }
    .rack-story-hero::before,
    .rack-story-panel::before { backdrop-filter: blur(2px); -webkit-backdrop-filter: blur(2px); }
    .rack-story-panel[data-side="right"] .rack-stage,
    .rack-story-panel[data-side="right"] .rack-specs li { justify-content: flex-start; }
    .rack-story-panel h3 { margin-bottom: 10px; font-size: clamp(2rem, 8.5vw, 2.8rem); }
    .rack-story-panel > p { margin-bottom: 13px; font-size: 0.84rem; line-height: 1.58; }
    .rack-specs { display: grid; grid-template-columns: 1fr 1fr; gap: 0 12px; }
    .rack-specs li { padding: 7px 0; font-size: 0.72rem; }
    .rack-stage { margin-bottom: 12px; font-size: 0.58rem; }
    .rack-progress { right: 9px; }
    .rack-render-model {
        top: 39%;
        width: min(920px, 116vw);
        height: min(480px, 45vh);
    }
    .rack-label-layer { display: none; }
    .rack-label { display: none; }
    .rack-label-line { width: 30px; }
    .rack-label-text { padding: 8px 9px; font-size: 0.62rem; letter-spacing: 0.07em; }
    .rack-label-rack { left: 43%; top: 43%; }
    .rack-label-motor { left: 61%; top: 52%; }
    .rack-scroll-hint { bottom: 18px; }
}

@media (max-width: 900px) {
    .rack-info-popover {
        position: fixed;
        top: auto;
        right: 12px;
        bottom: 16px;
        left: 12px;
        width: auto;
        transform: translateY(24px);
    }
    .rack-info-popover.is-open { transform: translateY(0); }
    .rack-label-layer { display: block; }
    .rack-label { display: flex; }
    .rack-label-line { display: none; }
    .rack-label-text {
        max-width: 128px;
        padding: 7px 8px;
        font-size: .56rem;
        line-height: 1.2;
        letter-spacing: .045em;
        white-space: normal;
        text-align: center;
    }
}

@media (max-width: 560px) {
    .rack-story-hero { top: 96px; padding: 21px 18px; }
    .rack-story-hero h2 { font-size: clamp(2.65rem, 13vw, 3.8rem); }
    .rack-story-hero p { font-size: 0.82rem; line-height: 1.55; }
    .rack-story-panel,
    .rack-story-panel[data-side="right"] { right: 12px; left: 12px; padding: 18px 16px 14px; }
    .rack-story-panel h3 { font-size: clamp(1.85rem, 8vw, 2.35rem); }
    .rack-kicker { font-size: 0.56rem; margin-bottom: 14px; }
    .rack-story-actions a:last-child { display: none; }
    .rack-progress { display: none; }
    .rack-specs li:nth-child(3) { display: none; }
}

/* Statik erişilebilirlik düzeni bilinçli olarak devre dışı: 3D teknik sunum korunur. */
@media (prefers-reduced-motion: reduce) and (max-width: 0px) {
    .rack-experience { height: auto; padding: 90px 20px !important; }
    .rack-story-sticky {
        position: relative;
        height: auto;
        min-height: 760px;
        padding: 100px 0 40px;
        overflow: visible;
        border-radius: 0;
    }
    .rack-label,
    .rack-progress,
    .rack-scroll-hint,
    .rack-loading { display: none; }
    .rack-render-model {
        display: block;
        top: 47%;
        width: min(1120px, 94vw);
        height: min(560px, 52vh);
    }
    .rack-topline { top: 44px; }
    .rack-story-hero,
    .rack-story-panel,
    .rack-story-panel[data-side="right"] {
        position: relative;
        top: auto;
        right: auto;
        bottom: auto;
        left: auto;
        width: min(720px, calc(100% - 40px));
        margin: 0 auto 28px;
        opacity: 1 !important;
        text-align: left;
        transform: none !important;
    }
    .rack-story-panel,
    .rack-story-panel[data-side="right"] { padding: 24px; background: var(--rack-panel); border: 1px solid var(--rack-line); border-radius: 16px; }
    .rack-story-panel[data-side="right"] .rack-stage,
    .rack-story-panel[data-side="right"] .rack-specs li { justify-content: flex-start; }
    .rack-label-dot::after,
    .rack-scroll-hint i { animation: none; }
}