/* Structural CSS for Interactive Hover Expand Cards */
:root {
    --ihe-transition-duration: 600ms;
}

.ihe-wrapper {
    width: 100%;
}

.ihe-container {
    display: flex;
    flex-direction: row;
    width: 100%;
    box-sizing: border-box;
}

/* Base Card Styles */
.ihe-card {
    position: relative;
    flex: 1 1 0%;
    overflow: hidden;
    cursor: pointer;
    box-sizing: border-box;
    transition: flex var(--ihe-transition-duration) cubic-bezier(0.25, 1, 0.5, 1),
                background-color var(--ihe-transition-duration) ease,
                border-radius var(--ihe-transition-duration) ease;
    outline: none;
}

/* Desktop Width Proportions via CSS custom properties */
@media (min-width: 1025px) {
    .ihe-card {
        flex: 0 0 var(--ihe-desktop-inactive, 25%);
        width: var(--ihe-desktop-inactive, 25%);
    }
    .ihe-card.is-active {
        flex: 0 0 var(--ihe-desktop-active, 50%);
        width: var(--ihe-desktop-active, 50%);
    }
}

/* Tablet Proportions */
@media (max-width: 1024px) and (min-width: 768px) {
    .ihe-card {
        flex: 0 0 var(--ihe-tablet-inactive, 25%);
        width: var(--ihe-tablet-inactive, 25%);
    }
    .ihe-card.is-active {
        flex: 0 0 var(--ihe-tablet-active, 50%);
        width: var(--ihe-tablet-active, 50%);
    }
}

/* Mobile: Stack layout */
@media (max-width: 767px) {
    .ihe-container {
        flex-direction: column;
    }
    .ihe-card {
        flex: 1 1 auto !important;
        width: 100% !important;
        height: auto !important;
        min-height: 250px;
    }
}

/* Background image handling */
.ihe-card-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-size: cover;
    background-position: center center;
    background-repeat: no-repeat;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--ihe-transition-duration) ease,
                transform var(--ihe-transition-duration) cubic-bezier(0.25, 1, 0.5, 1);
}

.ihe-card.is-active .ihe-card-bg {
    opacity: 1;
}

/* Zoom effect option */
.ihe-card.ihe-zoom-enabled:hover .ihe-card-bg {
    transform: scale(1.05);
}

/* Overlay Visuals */
.ihe-card-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--ihe-transition-duration) ease;
}

.ihe-card.is-active .ihe-card-overlay {
    opacity: 1;
}

/* Content Layout Inner Container */
.ihe-card-inner {
    position: relative;
    z-index: 2;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    height: 100%;
    width: 100%;
    padding: 30px;
    box-sizing: border-box;
}

/* Inactive card content styles */
.ihe-card-inactive-content {
    opacity: 1;
    transform: translateY(0);
    transition: opacity calc(var(--ihe-transition-duration) * 0.7) ease,
                transform calc(var(--ihe-transition-duration) * 0.7) ease,
                padding var(--ihe-transition-duration) ease;
    pointer-events: none;
    box-sizing: border-box;
}

.ihe-card.is-active .ihe-card-inactive-content {
    opacity: 0;
    transform: translateY(-10px);
    pointer-events: none;
}

/* Active card content styles */
.ihe-card-active-content {
    opacity: 0;
    transform: translateY(15px);
    transition: opacity calc(var(--ihe-transition-duration) * 0.8) ease,
                transform calc(var(--ihe-transition-duration) * 0.8) cubic-bezier(0.25, 1, 0.5, 1),
                padding var(--ihe-transition-duration) ease;
    pointer-events: none;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    justify-content: flex-end;
    margin-top: auto;
    box-sizing: border-box;
    width: 100%;
}

.ihe-card.is-active .ihe-card-active-content {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

/* Typography styles matching reference */
.ihe-card-title {
    margin: 0 0 10px 0;
    font-weight: 600;
    display: block;
    max-width: 100%;
    box-sizing: border-box;
}

.ihe-card-description {
    margin: 0;
    font-size: 14px;
    line-height: 1.5;
    display: block;
    max-width: 100%;
    box-sizing: border-box;
}

/* Large card number label */
.ihe-card-number {
    position: absolute;
    bottom: 25px;
    right: 30px;
    font-size: 80px;
    font-weight: 700;
    line-height: 1;
    pointer-events: none;
    transition: color var(--ihe-transition-duration) ease,
                opacity var(--ihe-transition-duration) ease;
}

@media (max-width: 1024px) {
    .ihe-card-number {
        font-size: 60px;
        bottom: 20px;
        right: 25px;
    }
}

/* Button default visual styling */
.ihe-card-button {
    display: inline-block;
    margin-top: 15px;
    padding: 10px 20px;
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    transition: transform 0.2s ease, opacity 0.2s ease;
}

.ihe-card-button:hover {
    transform: translateY(-2px);
    opacity: 0.95;
}