/* Case Study Introduction */
.letter-spacing-1 {
    letter-spacing: 1.5px;
}

/* Filter Buttons */
.btn-filter {
    background: #f8f9fa;
    color: #223645;
    border: 2px solid #e9ecef;
    padding: 10px 25px;
    font-weight: 600;
    margin: 0 5px;
    transition: all 0.3s ease;
    border-radius: 4px;
}

.btn-filter:hover,
.btn-filter.active {
    background: #e41e13;
    color: #fff;
    border-color: #e41e13;
    transform: translateY(-2px);
}

/* Case Study Cards */
.case-study-card-link {
    text-decoration: none;
    color: inherit;
    display: block;
}

.case-study-card {
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid #f0f0f0;
}

.case-study-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15) !important;
    border-color: #e41e13;
}

.case-study-image-wrapper {
    height: 280px;
    background: #f5f5f5;
}

.case-study-image {
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.case-study-card:hover .case-study-image {
    transform: scale(1.15);
}

.case-study-overlay {
    background: linear-gradient(135deg, rgba(228, 30, 19, 0.9) 0%, rgba(228, 30, 19, 0.8) 100%);
    opacity: 0;
    transition: opacity 0.4s ease-in-out;
    z-index: 2;
}

.case-study-card:hover .case-study-overlay {
    opacity: 1;
}

.case-study-badge {
    z-index: 3;
}

.case-study-card .feature-box-info h5 {
    color: #223645;
    transition: color 0.3s ease;
    font-size: 20px;
    line-height: 1.4;
}

.case-study-card:hover .feature-box-info h5 {
    color: #e41e13;
}

.case-study-meta {
    border-top: 1px solid #e9ecef;
    border-bottom: 1px solid #e9ecef;
    padding-top: 10px;
    padding-bottom: 10px;
}

.btn-case-study-link {
    background: transparent;
    color: #e41e13;
    border: 2px solid #e41e13;
    padding: 8px 20px;
    font-weight: 600;
    font-size: 14px;
    text-transform: uppercase;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
    border-radius: 4px;
}

.btn-case-study-link:hover {
    background: #e41e13;
    color: #fff;
    transform: translateX(5px);
    box-shadow: 0 4px 15px rgba(228, 30, 19, 0.3);
}

/* Results Section */
.result-card {
    transition: all 0.3s ease;
    border: 1px solid #e9ecef;
}

.result-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1) !important;
    border-color: #e41e13;
}

.result-icon {
    transition: transform 0.3s ease;
}

.result-card:hover .result-icon {
    transform: scale(1.1);
}

/* CTA Section */
.btn-cta-primary {
    background: linear-gradient(135deg, #e41e13 0%, #c41a10 100%);
    color: #fff;
    padding: 14px 35px;
    font-weight: 600;
    text-transform: uppercase;
    border: none;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(228, 30, 19, 0.3);
    border-radius: 4px;
}

.btn-cta-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(228, 30, 19, 0.4);
    color: #fff;
}

.btn-cta-outline {
    background: transparent;
    color: #fff;
    border: 2px solid #fff;
    padding: 14px 35px;
    font-weight: 600;
    text-transform: uppercase;
    transition: all 0.3s ease;
    border-radius: 4px;
}

.btn-cta-outline:hover {
    background: #fff;
    color: #223645;
    transform: translateY(-2px);
}

/* Subscribe Section */
.form-control-modern {
    width: 100%;
    padding: 14px 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
    border-radius: 0;
    font-size: 15px;
    transition: all 0.3s ease;
}

.form-control-modern::placeholder {
    color: rgba(255, 255, 255, 0.7);
}

.form-control-modern:focus {
    outline: none;
    border-color: #fff;
    background: rgba(255, 255, 255, 0.15);
    color: #fff;
}

/* Filter Functionality */
.case-study-item {
    display: block;
}

.case-study-item.hidden {
    display: none;
}

@media (max-width: 768px) {
    .case-study-image-wrapper {
        height: 240px;
    }

    .case-study-card .feature-box-info {
        padding: 1.5rem !important;
    }

    .case-study-card .feature-box-info h5 {
        font-size: 18px;
    }

    .btn-filter {
        display: block;
        width: 100%;
        margin: 5px 0;
    }

    .sub-left h4 {
        font-size: 18px;
        margin-bottom: 20px !important;
    }

    .cta-buttons .btn {
        display: block;
        width: 100%;
        margin-bottom: 10px !important;
    }
}