/*-- Modern Patent Section CSS --*/
.patent-area {
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, #f7f9fb 0%, #e9ecef 100%);
}

.patent-card {
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: 45px;
    border-radius: 24px;
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-left: 6px solid #ff4d06;
    transition: all 0.6s cubic-bezier(0.165, 0.84, 0.44, 1);
    height: 100%;
}

.patent-card:hover {
    transform: translateY(-12px) scale(1.02);
    background: rgba(255, 255, 255, 0.9);
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.1);
}

.patent-card .card-icon {
    font-size: 55px;
    color: #ff4d06;
    margin-bottom: 25px;
    filter: drop-shadow(0 5px 15px rgba(255, 77, 6, 0.2));
}

.patent-card h3 {
    font-size: 32px;
    margin-bottom: 25px;
    letter-spacing: -0.5px;
}

.patent-features {
    padding: 0;
    margin: 30px 0 0;
    list-style: none;
}

.patent-features li {
    font-weight: 600;
    margin-bottom: 20px;
    color: #444;
    display: flex;
    align-items: center;
    font-size: 16px;
}

.patent-features li i {
    color: #ff4d06;
    font-size: 22px;
    margin-right: 12px;
}

.patent-viewer-container {
    background: #1a1a1a;
    border-radius: 24px;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.6s cubic-bezier(0.165, 0.84, 0.44, 1);
    perspective: 1000px;
}

.patent-viewer-container:hover {
    transform: translateY(-8px) rotateX(2deg) rotateY(-2deg);
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.3);
}

.viewer-header {
    background: rgba(40, 40, 40, 0.9);
    backdrop-filter: blur(5px);
    padding: 18px 28px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: #fff;
    font-weight: 700;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.viewer-header i {
    margin-right: 10px;
}

.expand-link {
    color: #ff4d06;
    font-size: 22px;
    transition: transform 0.3s ease;
}

.expand-link:hover {
    color: #fff;
    transform: scale(1.2);
}

.patent-image-wrap {
    background: #222;
    min-height: 480px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    cursor: zoom-in;
}

.patent-img {
    width: 100%;
    height: 480px;
    object-fit: contain;
    transition: transform 0.8s cubic-bezier(0.165, 0.84, 0.44, 1);
}

.patent-image-wrap:hover .patent-img {
    transform: scale(1.08);
}

.premium-shadow {
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.08);
}

.bg-gray {
    background-color: #f7f9fb;
}

/* Responsive Refinements */
@media (max-width: 1199px) {
    .patent-card h3 {
        font-size: 28px;
    }

    .patent-image-wrap,
    .patent-img {
        height: 400px;
        min-height: 400px;
    }
}

@media (max-width: 991px) {
    .patent-viewer-container {
        margin-top: 50px;
    }

    .patent-card {
        padding: 35px;
    }
}

@media (max-width: 767px) {
    .patent-area {
        padding-top: 70px;
        padding-bottom: 70px;
    }

    .patent-card h3 {
        font-size: 26px;
    }

    .patent-image-wrap,
    .patent-img {
        height: 350px;
        min-height: 350px;
    }

    .patent-card .card-icon {
        font-size: 45px;
    }
}

@media (max-width: 575px) {
    .patent-card {
        padding: 25px;
    }

    .patent-card p {
        font-size: 15px;
    }

    .patent-image-wrap,
    .patent-img {
        height: 300px;
        min-height: 300px;
    }

    .viewer-header {
        padding: 12px 20px;
        font-size: 15px;
    }
}