/* ═══════════════════════════════════════════
   3D BATTERY SHOWCASE — Section Styles
   Matches LithinX theme: #000 bg, #00ff66 accent, Inter font
   ═══════════════════════════════════════════ */

#battery-showcase {
    position: relative;
    height: 300vh;
    background: #000;
}

.showcase-sticky {
    position: sticky;
    top: 0;
    width: 100%;
    height: 100vh;
    overflow: hidden;
}

#battery-canvas {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    display: block;
}

/* ── Labels Container ── */
.showcase-labels {
    position: absolute;
    inset: 0;
    pointer-events: none;
    z-index: 10;
}

.showcase-label {
    position: absolute;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
    pointer-events: none;
}

.showcase-label.active {
    opacity: 1;
    transform: translateY(0);
}

.label-content {
    max-width: 360px;
}

.label-tag {
    display: inline-block;
    font-size: 11px;
    font-weight: 700;
    color: #00ff66;
    letter-spacing: 3px;
    text-transform: uppercase;
    margin-bottom: 12px;
}

.label-title {
    font-size: 36px;
    font-weight: 800;
    line-height: 1.05;
    letter-spacing: -1.5px;
    color: #fff;
    margin-bottom: 12px;
}

.label-title .green {
    color: #00ff66;
}

.label-subtitle {
    font-size: 14px;
    color: #555;
    line-height: 1.7;
}

.label-specs {
    display: flex;
    gap: 8px;
    margin-top: 16px;
    flex-wrap: wrap;
}

.label-spec {
    display: inline-block;
    background: rgba(0, 255, 102, 0.08);
    color: #00ff66;
    font-size: 11px;
    font-weight: 600;
    padding: 5px 12px;
    border-radius: 3px;
    letter-spacing: 0.5px;
}

/* ── Decorative line ── */
.label-line {
    display: block;
    width: 60px;
    height: 1px;
    background: #00ff66;
    margin-bottom: 16px;
}

/* ── Label positions ── */
.showcase-label[data-phase="intro"] {
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) translateY(20px);
    text-align: center;
}
.showcase-label[data-phase="intro"].active {
    transform: translate(-50%, -50%);
}
.showcase-label[data-phase="intro"] .label-line {
    margin: 0 auto 16px;
}

.showcase-label[data-phase="display"] {
    top: 25%;
    right: 6%;
    text-align: left;
}

.showcase-label[data-phase="body"] {
    top: 30%;
    left: 5%;
    text-align: left;
}

.showcase-label[data-phase="terminals"] {
    top: 22%;
    right: 6%;
    text-align: left;
}

.showcase-label[data-phase="cells"] {
    bottom: 12%;
    left: 50%;
    transform: translateX(-50%) translateY(20px);
    text-align: center;
}
.showcase-label[data-phase="cells"].active {
    transform: translateX(-50%);
}
.showcase-label[data-phase="cells"] .label-line {
    margin: 0 auto 16px;
}

/* ── Progress dots ── */
.showcase-progress {
    position: absolute;
    right: 24px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 20;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.progress-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    border: 1.5px solid #333;
    background: transparent;
    transition: all 0.3s ease;
    cursor: pointer;
}

.progress-dot.active {
    border-color: #00ff66;
    background: #00ff66;
    box-shadow: 0 0 10px rgba(0, 255, 102, 0.3);
}

/* ── Scroll hint ── */
.showcase-scroll-hint {
    position: absolute;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    z-index: 15;
    opacity: 0.35;
    transition: opacity 0.5s;
}

.showcase-scroll-hint.hidden {
    opacity: 0;
    pointer-events: none;
}

.showcase-scroll-hint span {
    font-size: 10px;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: #fff;
}

.showcase-scroll-line {
    width: 1px;
    height: 36px;
    background: #fff;
    animation: showcaseScrollPulse 2s ease-in-out infinite;
}

@keyframes showcaseScrollPulse {
    0% { transform: scaleY(1); opacity: 1; }
    100% { transform: scaleY(0.2); opacity: 0; }
}

/* ── Responsive ── */
@media (max-width: 768px) {
    .showcase-label[data-phase="display"],
    .showcase-label[data-phase="body"],
    .showcase-label[data-phase="terminals"] {
        left: 5%;
        right: 5%;
        top: auto;
        bottom: 8%;
        text-align: center;
    }
    .showcase-label .label-line {
        margin: 0 auto 12px !important;
    }
    .showcase-progress {
        right: 10px;
    }
    .label-title {
        font-size: 24px;
    }
}