:root {
    --sap-primary-color: #1e40af;
    --sap-hover-color: #f92020;
    --sap-text-color: #ffffff;
    --sap-card-bg: #ffffff;
    --sap-card-border: #055ba5;
    --sap-card-title: #1a202c;
    --sap-card-price: #1e40af;
    --sap-card-desc: #4a5568;
    --sap-tool-bg: #f9f9f9;
    --sap-label-color: #4a5568;
    --sap-slider-circle: #1e40af;
    --sap-slider-circle-border: #ffffff;
    --sap-slider-active-track: #1e40af;
    --sap-slider-inactive-track: #cbd5e0;
    --sap-slider-filter-color: #e53e3e;
}

.storage-tool-container {
    width: 100%;
    margin: 0 auto 30px auto;
    text-align: center;
    background: var(--sap-tool-bg);
    padding: 40px 30px;
    border-radius: 25px;
    color: var(--sap-label-color);
}

.storage-tool-container p,
.storage-tool-container a {
    color: var(--sap-label-color);
}

.current-selection-label {
    color: var(--sap-label-color);
}

.storage-range-input {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 8px;
    border-radius: 4px;
    outline: none;
    margin: 15px 0 30px;
    cursor: pointer;
}

/* Webkit Thumb */
.storage-range-input::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--sap-slider-circle);
    border: 4px solid var(--sap-slider-circle-border);
    box-shadow: 0 1px 5px rgba(0,0,0,0.3);
    cursor: pointer;
    transition: transform 0.1s ease;
}

.storage-range-input:active::-webkit-slider-thumb {
    transform: scale(1.15);
}

/* Firefox Thumb */
.storage-range-input::-moz-range-thumb {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--sap-slider-circle);
    border: 4px solid var(--sap-slider-circle-border);
    box-shadow: 0 1px 5px rgba(0,0,0,0.3);
    cursor: pointer;
    transition: transform 0.1s ease;
}

.storage-range-input:active::-moz-range-thumb {
    transform: scale(1.15);
}

/* Dynamic Active Filter Thumb Color */
.storage-tool-container.is-filtered .storage-range-input::-webkit-slider-thumb {
    background: var(--sap-slider-filter-color);
}

.storage-tool-container.is-filtered .storage-range-input::-moz-range-thumb {
    background: var(--sap-slider-filter-color);
}

/* Slider Labels */
.slider-labels {
    display: flex;
    justify-content: space-between;
    width: 100%;
    padding: 0 2px;
}

.slider-labels p {
    margin: 0;
    font-size: 18px;
    font-weight: 600;
    color: var(--sap-label-color);
    cursor: pointer;
}

/* Grid Layout */
.storage-unit-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
}

/* Card Styling */
.unit-card {
    display: flex;
    flex-flow: column;
    justify-content: center;
    align-items: center;
    gap: 15px;
    background-color: var(--sap-card-bg);
    border: 2px solid var(--sap-card-border);
    padding: 30px;
    border-radius: 12px;
    text-align: center;
    box-shadow: 4px 4px 6px rgba(0, 0, 0, 0.25);
    transition: transform 0.3s ease, border-color 0.3s ease, opacity 0.3s ease;
}

.unit-card:hover {
    transform: translateY(-5px);
    border-color: var(--sap-hover-color);
}

.unit-card * {
    margin: 0;
}

.unit-card .unit-size {
    color: var(--sap-card-title);
}

.unit-card .unit-price {
    color: var(--sap-card-title);
    text-transform: capitalize;
    line-height: normal;
}

.unit-card .unit-price span {
    display: block;
    font-size: 0.6em;
}

.unit-card .unit-desc {
    color: var(--sap-card-desc);
}

.unit-card .unit-sqft {
    font-size: 14px;
    font-weight: 600;
    color: var(--sap-card-desc);
    margin-top: -20px;
}

/* Reserve Button */
.reserve-btn {
    background-color: var(--sap-primary-color);
    color: var(--sap-text-color) !important;
    display: block;
    width: 100%;
    padding: 10px 15px;
    border-radius: 50px;
    text-decoration: none;
    font-family: sans-serif;
    font-size: 20px;
    font-weight: 600;
    text-transform: initial;
    transition: background 0.3s ease-in-out;
}

.reserve-btn:hover {
    background-color: var(--sap-hover-color);
    color: var(--sap-text-color) !important;
}