/* ─── Expand-on-Hover Panel Gallery ─── */

.expand-hover-container {
    display: flex;
    gap: 8px;
    height: 450px;
    width: 100%;
    max-width: 1100px;
    margin: 0 auto;
    padding: 0;
    overflow: hidden;
    border-radius: 20px;
}

@media (max-width: 768px) {
    .expand-hover-container {
        height: 280px;
        gap: 4px;
        border-radius: 14px;
    }
}

@media (max-width: 480px) {
    .expand-hover-container {
        height: 220px;
        gap: 3px;
        border-radius: 10px;
    }
}

@media (max-width: 480px) {
    .expand-hover-panel.collapsed {
        flex: 0.3;
    }
}

/* ─── Individual Panel ─── */
.expand-hover-panel {
    position: relative;
    flex: 1;
    min-width: 0;
    overflow: hidden;
    border-radius: 16px;
    cursor: pointer;
    transition: flex 0.6s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.expand-hover-panel.expanded {
    flex: 4;
}

.expand-hover-panel.collapsed {
    flex: 0.6;
}

@media (max-width: 768px) {
    .expand-hover-panel {
        border-radius: 10px;
    }

    .expand-hover-panel.expanded {
        flex: 5;
    }

    .expand-hover-panel.collapsed {
        flex: 0.4;
    }
}

/* ─── Panel Image ─── */
.expand-hover-image {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.expand-hover-panel:hover .expand-hover-image {
    transform: scale(1.05);
}

/* ─── Dark Overlay ─── */
.expand-hover-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top,
            rgba(0, 0, 0, 0.8) 0%,
            rgba(0, 0, 0, 0.2) 40%,
            rgba(0, 0, 0, 0.05) 100%);
    transition: background 0.5s ease;
}

.expand-hover-panel.collapsed .expand-hover-overlay {
    background: linear-gradient(to top,
            rgba(0, 0, 0, 0.85) 0%,
            rgba(0, 0, 0, 0.5) 100%);
}

/* ─── Content (Title + Subtitle) ─── */
.expand-hover-content {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 4px;
    z-index: 10;
}

@media (max-width: 768px) {
    .expand-hover-content {
        padding: 1rem;
    }
}

.expand-hover-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: #fff;
    white-space: nowrap;
    transition: font-size 0.5s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.expand-hover-panel.expanded .expand-hover-title {
    font-size: 1.75rem;
}

.expand-hover-panel.collapsed .expand-hover-title {
    font-size: 0.9rem;
    writing-mode: vertical-rl;
    text-orientation: mixed;
    transform: rotate(180deg);
    position: absolute;
    bottom: 1.5rem;
    left: 50%;
    margin-left: -0.5em;
}

@media (max-width: 768px) {
    .expand-hover-title {
        font-size: 1rem;
    }

    .expand-hover-panel.expanded .expand-hover-title {
        font-size: 1.25rem;
    }

    .expand-hover-panel.collapsed .expand-hover-title {
        font-size: 0.75rem;
    }
}

.expand-hover-subtitle {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.6);
    white-space: nowrap;
    overflow: hidden;
    opacity: 0;
    max-height: 0;
    transition:
        opacity 0.4s ease 0.15s,
        max-height 0.4s ease;
}

.expand-hover-panel.expanded .expand-hover-subtitle {
    opacity: 1;
    max-height: 2rem;
}

@media (max-width: 768px) {
    .expand-hover-subtitle {
        font-size: 0.7rem;
    }
}