/* ============================================================
   KVM Joaillerie — Home CSS (front-page.php)
   Dual Collection Panels — Emerald Design
   ============================================================ */

body.home {
    overflow: hidden;
}

.kvm-home {
    height: 100vh;
    padding-top: 76px;
}

/* — Dual Panels Container — */
.kvm-dual {
    position: relative;
    height: calc(100vh - 76px);
    min-height: 500px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    transition: grid-template-columns 900ms var(--ease-cubic-soft);
    overflow: hidden;
    background: #1a1a1a;
}
.kvm-dual.is-silver { grid-template-columns: 1.6fr 1fr; }
.kvm-dual.is-gold   { grid-template-columns: 1fr 1.6fr; }

/* — Medial rule — */
.kvm-dual-rule {
    position: absolute;
    top: 8%;
    bottom: 8%;
    left: 50%;
    width: 1px;
    background: rgba(245,239,226,0.18);
    pointer-events: none;
    z-index: 2;
    transition: left 900ms var(--ease-cubic-soft), opacity 600ms var(--ease-out);
}
.kvm-dual.is-silver .kvm-dual-rule { left: 61.5%; opacity: 0.4; }
.kvm-dual.is-gold   .kvm-dual-rule { left: 38.5%; opacity: 0.4; }

/* — Panel — */
.kvm-panel {
    position: relative;
    overflow: hidden;
    cursor: pointer;
    text-decoration: none;
    color: var(--cream);
}

.kvm-panel-bg {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    transform: scale(1.05);
    transition: transform 1400ms var(--ease-cubic-soft), filter 1400ms var(--ease-cubic-soft);
}
.kvm-panel:hover .kvm-panel-bg { transform: scale(1.0); }

.kvm-panel--silver .kvm-panel-bg {
    background-color: #7A8A82;
    filter: grayscale(0.85) contrast(1.1) brightness(0.78);
}
.kvm-panel--gold .kvm-panel-bg {
    background-color: #8A7A5A;
    filter: saturate(1) contrast(1.06) brightness(0.78);
}

/* Dark veil for text readability */
.kvm-panel::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(0,0,0,0.05), rgba(0,0,0,0.55));
    transition: background 800ms var(--ease-out);
}
.kvm-panel:hover::after {
    background: linear-gradient(180deg, rgba(0,0,0,0.0), rgba(0,0,0,0.42));
}

/* — Panel Inner — */
.kvm-panel-inner {
    position: relative;
    z-index: 1;
    height: 100%;
    padding: clamp(36px, 5vw, 64px);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

/* Panel top */
.kvm-panel-top {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    color: rgba(245,239,226,0.7);
}
.kvm-panel-marker {
    display: inline-flex;
    align-items: center;
    gap: 10px;
}
.kvm-marker-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    display: inline-block;
}
.kvm-panel--silver .kvm-marker-dot { background: var(--silver); }
.kvm-panel--gold .kvm-marker-dot { background: var(--gold); }

/* Panel title */
.kvm-panel-title {
    font-family: var(--serif);
    font-weight: 300;
    font-size: clamp(3rem, 7.2vw, 7.8rem);
    line-height: 0.88;
    letter-spacing: -0.035em;
    margin: 0;
    color: rgba(248,246,241,0.95);
}
.kvm-panel-title em {
    font-style: italic;
    font-weight: 300;
}
.kvm-panel--silver .kvm-panel-title em { color: #DCDAD2; }
.kvm-panel--gold .kvm-panel-title em { color: var(--gold); }

/* Panel bottom */
.kvm-panel-bottom {
    display: grid;
    grid-template-columns: 1fr auto;
    align-items: end;
    gap: 24px;
}
.kvm-panel-lede {
    max-width: 40ch;
    font-family: var(--serif);
    font-style: italic;
    font-weight: 300;
    font-size: clamp(1rem, 1.3vw, 1.2rem);
    line-height: 1.45;
    color: rgba(248,246,241,0.86);
}

/* CTA with arrow */
.kvm-panel-cta {
    display: inline-flex;
    align-items: center;
    gap: 14px;
    font-family: var(--sans);
    font-size: var(--cap);
    text-transform: uppercase;
    letter-spacing: 0.22em;
    border-bottom: 1px solid rgba(248,246,241,0.5);
    padding-bottom: 6px;
    transition: border-color 400ms var(--ease-out), gap 400ms var(--ease-out);
    white-space: nowrap;
}
.kvm-cta-arrow {
    display: inline-block;
    width: 22px;
    height: 1px;
    background: currentColor;
    position: relative;
    transition: width 400ms var(--ease-quart);
}
.kvm-cta-arrow::after {
    content: "";
    position: absolute;
    right: 0;
    top: -3px;
    width: 7px;
    height: 7px;
    border-top: 1px solid currentColor;
    border-right: 1px solid currentColor;
    transform: rotate(45deg);
}
.kvm-panel:hover .kvm-panel-cta { border-color: rgba(248,246,241,1); }
.kvm-panel:hover .kvm-cta-arrow { width: 38px; }

/* — Mobile — */
@media (max-width: 860px) {
    .kvm-dual {
        grid-template-columns: 1fr;
        height: auto;
    }
    .kvm-dual.is-silver,
    .kvm-dual.is-gold {
        grid-template-columns: 1fr;
    }
    .kvm-dual-rule { display: none; }
    .kvm-panel { min-height: 50vh; }
    .kvm-panel-title {
        font-size: clamp(2.5rem, 12vw, 5rem);
    }
    .kvm-panel-bottom {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    .kvm-home {
        height: auto;
        overflow: visible;
    }
    body.home { overflow: visible; }
}