.estimator-container {
    padding: 60px 0;
}

.estimator-header {
    text-align: center;
    margin-bottom: 50px;
}

.estimator-header h1 {
    font-family: var(--font-heading);
    color: var(--color-wood-amber);
    margin-bottom: 10px;
}

.estimator-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 40px;
    align-items: start;
}

/* Left Side: Inputs */
.estimator-controls {
    background-color: var(--color-surface);
    padding: 30px;
    border-radius: 8px;
    border: 1px solid var(--color-gunmetal);
}

.form-group {
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--color-gunmetal);
}

.form-group:last-child {
    border-bottom: none;
    margin-bottom: 0;
}

.form-group h3 {
    font-family: var(--font-heading);
    margin-bottom: 20px;
    color: #fff;
}

.input-row {
    display: flex;
    gap: 20px;
}

.input-col {
    flex: 1;
}

label {
    display: block;
    margin-bottom: 8px;
    color: #ccc;
    font-size: 0.9rem;
}

input[type="number"], select {
    width: 100%;
    padding: 12px;
    margin-bottom: 20px;
    background-color: var(--color-matte-black);
    border: 1px solid var(--color-gunmetal);
    color: #fff;
    border-radius: 4px;
    font-family: var(--font-primary);
}

input[type="number"]:focus, select:focus {
    outline: none;
    border-color: var(--color-wood-amber);
}

/* Range Slider */
input[type="range"] {
    width: 100%;
    accent-color: var(--color-wood-amber);
    margin-bottom: 20px;
}

.checkbox-group {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: 10px;
}

.checkbox-group input {
    width: 20px;
    height: 20px;
    accent-color: var(--color-wood-amber);
}

/* Right Side: Result Display */
.estimator-result {
    background-color: var(--color-matte-black);
    padding: 40px 30px;
    border-radius: 8px;
    text-align: center;
    position: sticky;
    top: 100px; /* Keeps it in view as they scroll the form */
    border: 2px solid var(--color-wood-amber);
}

.estimator-result h3 {
    font-family: var(--font-heading);
    color: #fff;
    margin-bottom: 20px;
}

.price-display {
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--color-wood-amber);
    margin-bottom: 20px;
}

.disclaimer {
    font-size: 0.85rem;
    color: #888;
    margin-bottom: 30px;
}

.estimator-result .btn {
    width: 100%;
    margin: 0;
}

/* Mobile Responsiveness */
@media (max-width: 900px) {
    .estimator-grid {
        grid-template-columns: 1fr;
    }
    .estimator-result {
        position: static;
    }
}

/* New Steel Selection Grid */
.helper-text {
    font-size: 0.85rem;
    color: #ccc;
    margin-bottom: 15px;
}

.steel-checkbox-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
    gap: 15px;
    margin-bottom: 20px;
    background-color: rgba(0, 0, 0, 0.2);
    padding: 15px;
    border-radius: 4px;
    border: 1px solid var(--color-gunmetal);
}

.steel-checkbox-grid label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    cursor: pointer;
    margin-bottom: 0;
}

.steel-checkbox-grid input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--color-wood-amber);
    cursor: pointer;
}

/* Dynamic Length Inputs */
.dynamic-steel-input {
    margin-top: 15px;
    padding: 15px;
    background-color: rgba(0, 0, 0, 0.3);
    border-left: 3px solid var(--color-wood-amber);
    border-radius: 4px;
    animation: slideDown 0.3s ease;
}

.dynamic-steel-input label {
    color: var(--color-wood-amber);
    font-weight: 500;
}

.dynamic-steel-input input {
    margin-bottom: 0 !important; /* Overrides default spacing */
}

@keyframes slideDown {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ==========================================================================
   Visual Wood Selection Grid
   ========================================================================== */
.wood-selection-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
    gap: 15px;
    margin-bottom: 30px;
}

.wood-card {
    cursor: pointer;
    display: block;
    margin-bottom: 0;
}

/* Hide the actual radio button circle completely */
.wood-card input[type="radio"] {
    display: none; 
}

/* Style the visible card */
.wood-card-content {
    background-color: rgba(30, 30, 30, 0.6);
    border: 2px solid var(--color-gunmetal);
    border-radius: 6px;
    overflow: hidden;
    text-align: center;
    transition: var(--transition-smooth);
}

.wood-card-content img {
    width: 100%;
    height: 70px; /* Keeps all images uniformly sized */
    object-fit: cover;
    display: block;
    border-bottom: 1px solid var(--color-gunmetal);
    background-color: #333; /* Placeholder color if image fails to load */
}

.wood-card-content span {
    display: block;
    padding: 8px 5px;
    font-size: 0.85rem;
    color: #ccc;
    font-weight: 500;
}

/* Hover Effect */
.wood-card:hover .wood-card-content {
    transform: translateY(-3px);
    border-color: #666;
}

/* Active / Selected State - Turns Amber when clicked */
.wood-card input[type="radio"]:checked + .wood-card-content {
    border-color: var(--color-wood-amber);
    background-color: rgba(212, 163, 115, 0.1); /* Very faint amber background */
    box-shadow: 0 4px 12px rgba(0,0,0,0.3);
}

.wood-card input[type="radio"]:checked + .wood-card-content span {
    color: var(--color-wood-amber);
    font-weight: 700;
}