/* ============================================================
   The Elita Edge — Scroll-Driven Engineering Showcase Styles
   Step 5 Signature Experience — Elita Lifts & Escalators
   ============================================================ */

.elita-edge {
    position: relative;
    padding-top: calc(var(--space-2xl) + 20px);
    padding-bottom: var(--space-2xl);
    background-color: var(--color-page, #F5F4F0);
    border-top: 1px solid var(--color-border, #E2E1DC);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    box-sizing: border-box;
    overflow: visible;
}

/* ---- Section Intro Header ---- */
.elita-edge__intro {
    text-align: center;
    max-width: 820px;
    margin: 0 auto 32px;
}

.elita-edge__eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-heading);
    font-size: 0.75rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.18em;
    color: var(--color-brand);
    margin-bottom: 10px;
}

.elita-edge__eyebrow-line {
    width: 20px;
    height: 2px;
    background-color: var(--color-brand);
    display: inline-block;
}

.elita-edge__heading {
    font-family: var(--font-heading);
    font-size: clamp(2rem, 3.2vw, 2.75rem);
    font-weight: 800;
    color: var(--color-text);
    line-height: 1.15;
    letter-spacing: -0.02em;
    margin-bottom: 10px;
}

.elita-edge__lead {
    font-family: var(--font-body);
    font-size: clamp(0.95rem, 1.1vw, 1.05rem);
    color: var(--color-text-muted);
    line-height: 1.55;
    max-width: 640px;
    margin: 0 auto;
}

/* ---- Desktop Pinned Stage Wrapper ---- */
.elita-edge__stage-wrapper {
    position: relative;
    width: 100%;
}

.elita-edge__stage {
    display: grid;
    grid-template-columns: 38% 62%;
    gap: var(--space-2xl);
    align-items: center;
    min-height: 460px;
    position: relative;
}

/* Zone 1 (Left Content Area) */
.elita-edge__content-column {
    position: relative;
    height: 100%;
    min-height: 420px;
    display: flex;
    align-items: center;
}

/* Vertical Timeline Indicator (01 │ 02 │ 03 │ 04) */
.elita-edge__timeline {
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    flex-direction: column;
    gap: 18px;
    z-index: 5;
}

.elita-edge__timeline-step {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    cursor: pointer;
}

.elita-edge__step-num {
    font-family: var(--font-heading);
    font-size: 0.75rem;
    font-weight: 700;
    color: rgba(0, 0, 0, 0.28);
    transition: color var(--transition-fast, 0.2s);
}

.elita-edge__step-line {
    width: 1px;
    height: 20px;
    background: rgba(0, 0, 0, 0.12);
    transition: all var(--transition-fast, 0.2s);
}

.elita-edge__timeline-step:last-child .elita-edge__step-line {
    display: none;
}

.elita-edge__timeline-step.active .elita-edge__step-num {
    color: var(--color-brand);
    font-weight: 800;
}

.elita-edge__timeline-step.active .elita-edge__step-line {
    background: var(--color-brand);
    width: 2px;
}

/* Stories Stack */
.elita-edge__stories {
    margin-left: 48px;
    position: relative;
    width: calc(100% - 48px);
    height: 380px;
}

.elita-edge__story {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
    opacity: 0;
    transform: translateY(20px);
    pointer-events: none;
    transition: opacity 0.5s cubic-bezier(0.16, 1, 0.3, 1), transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.elita-edge__story.active {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

.elita-edge__story-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
}

.elita-edge__chapter-label {
    font-family: var(--font-heading);
    font-size: 0.6875rem;
    font-weight: 800;
    letter-spacing: 0.16em;
    color: var(--color-brand);
}

.elita-edge__pillar-tag {
    font-family: var(--font-heading);
    font-size: 0.6875rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    color: var(--color-text-muted);
    text-transform: uppercase;
}

.elita-edge__story-title {
    font-family: var(--font-heading);
    font-size: clamp(1.8rem, 2.4vw, 2.5rem);
    font-weight: 800;
    color: var(--color-text);
    line-height: 1.15;
    letter-spacing: -0.02em;
    margin-bottom: 16px;
}

.elita-edge__story-desc {
    font-family: var(--font-body);
    font-size: 0.9375rem;
    color: var(--color-text-muted);
    line-height: 1.65;
    margin-bottom: 24px;
}

.elita-edge__story-specs {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    border-top: 1px solid var(--color-border, #E2E1DC);
    padding-top: 18px;
}

.elita-edge__spec-item {
    display: flex;
    flex-direction: column;
}

.elita-edge__spec-val {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--color-text);
    letter-spacing: -0.02em;
}

.elita-edge__spec-name {
    font-family: var(--font-heading);
    font-size: 0.6875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-text-muted);
    margin-top: 2px;
}

/* Zone 2 (Right Visual Stage) */
.elita-edge__visual-column {
    position: relative;
    width: 100%;
}

.elita-edge__visual-frame {
    position: relative;
    width: 100%;
    height: clamp(420px, 50vh, 480px);
    border-radius: var(--radius-xs, 4px);
    overflow: hidden;
    background-color: var(--color-surface-muted, #EEEDE9);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.12), inset 0 0 0 1px rgba(0, 0, 0, 0.08);
}

.elita-edge__visual-layer {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transform: scale(1.03);
    transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1), transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.elita-edge__visual-layer.active {
    opacity: 1;
    transform: scale(1);
}

.elita-edge__visual-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    display: block;
}

.elita-edge__visual-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(7, 23, 29, 0.1) 0%, transparent 30%, transparent 70%, rgba(7, 23, 29, 0.6) 100%);
    pointer-events: none;
}

.elita-edge__visual-badge {
    position: absolute;
    bottom: 24px;
    left: 24px;
    background: rgba(7, 23, 29, 0.92);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 2px;
    padding: 6px 14px;
    color: #FFFFFF;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    z-index: 2;
}

.elita-edge__badge-idx {
    font-family: var(--font-heading);
    font-size: 0.75rem;
    font-weight: 800;
    color: var(--color-brand);
}

.elita-edge__badge-text {
    font-family: var(--font-heading);
    font-size: 0.6875rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.9);
}

/* ---- Mobile Layout (<= 767px) ---- */
.elita-edge__mobile-chapters {
    display: none;
}

@media (max-width: 1023px) {
    .elita-edge__stage {
        grid-template-columns: 42% 58%;
        gap: var(--space-xl);
        min-height: 480px;
    }

    .elita-edge__visual-frame {
        height: 460px;
    }
}

@media (max-width: 767px) {
    .elita-edge {
        padding-top: var(--space-2xl);
        padding-bottom: var(--space-2xl);
    }

    .elita-edge__intro {
        text-align: left;
        margin-bottom: var(--space-xl);
    }

    .elita-edge__stage-wrapper {
        display: none; /* Hide complex pinned stage on mobile */
    }

    .elita-edge__mobile-chapters {
        display: block; /* Sequential layout on mobile */
    }

    .elita-edge__mobile-card {
        background: #FFFFFF;
        border: 1px solid var(--color-border, #E2E1DC);
        border-radius: var(--radius-xs, 4px);
        padding: 24px 20px;
        margin-bottom: 24px;
        box-shadow: 0 4px 16px rgba(0, 0, 0, 0.04);
    }

    .elita-edge__mobile-title {
        font-family: var(--font-heading);
        font-size: 1.5rem;
        font-weight: 800;
        color: var(--color-text);
        margin: 10px 0 16px;
        letter-spacing: -0.01em;
    }

    .elita-edge__mobile-visual {
        position: relative;
        width: 100%;
        height: 240px;
        border-radius: var(--radius-xs, 4px);
        overflow: hidden;
        margin-bottom: 18px;
        background-color: var(--color-surface-muted, #EEEDE9);
    }

    .elita-edge__mobile-img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        display: block;
    }

    .elita-edge__mobile-desc {
        font-family: var(--font-body);
        font-size: 0.9375rem;
        color: var(--color-text-muted);
        line-height: 1.6;
        margin-bottom: 18px;
    }
}