@media (max-width: 1024px) {
    .conference-title {
        font-size: 2.2rem;
    }

    .conference-year {
        font-size: 3.5rem;
    }

    .conference-location-date {
        font-size: 1.3rem;
    }

    .conference-tagline {
        font-size: 1.5rem;
    }

    .countdown-container {
        gap: 20px;
    }

    .countdown-box {
        min-width: 120px;
    }

    .registration-form-container {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .registration-form {
        padding-right: 0;
        border-right: none;
        padding-bottom: 30px;
        border-bottom: 1px solid var(--gray);
    }

    .registration-info {
        padding-left: 0;
    }
}

@media (max-width: 768px) {
    .hero-image {
        display: block;
        height: 60vh;
        width: 100%;
    }

    .hero-image img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        object-position: center;
    }

    .conference-info {
        padding: 40px 0;
        margin-top: 0;
    }

    .header-container {
        flex-wrap: wrap;
        height: auto;
        padding: 15px 0;
    }

    .logo {
        width: 100%;
        justify-content: center;
        margin-bottom: 15px;
    }

    .nav-menu {
        display: none;
        width: 100%;
        flex-direction: column;
        gap: 10px;
        text-align: center;
    }

    .nav-menu.active {
        display: flex;
    }

    .menu-toggle {
        display: block;
        position: absolute;
        right: 20px;
        top: 25px;
    }

    .conference-title {
        font-size: 1.8rem;
    }

    .conference-year {
        font-size: 3rem;
    }

    .conference-location-date {
        font-size: 1.1rem;
        flex-direction: column;
        gap: 10px;
    }

    .separator {
        display: none;
    }

    .conference-tagline {
        font-size: 1.3rem;
        padding: 0 10px;
    }

    .conference-actions {
        gap: 20px;
    }

    .btn-register {
        padding: 12px 30px;
        font-size: 1rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .countdown-container {
        flex-wrap: wrap;
        gap: 15px;
    }

    .countdown-box {
        min-width: calc(50% - 30px);
    }

    .speakers-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }

    .speaker-card {
        margin-bottom: 0;
    }
}

@media (max-width: 480px) {
    .hero-image {
        height: 50vh;
    }

    .hero-image img {
        object-fit: cover;
        object-position: center;
    }

    .conference-title {
        font-size: 1.5rem;
    }

    .conference-year {
        font-size: 2.5rem;
    }

    .conference-tagline {
        font-size: 1.1rem;
    }

    .conference-actions {
        flex-direction: column;
        gap: 15px;
    }

    .btn-register {
        width: 100%;
        justify-content: center;
    }

    .countdown-box {
        min-width: calc(50% - 15px);
    }

    .countdown-number {
        font-size: 2.5rem;
    }

    .btn-submit {
        padding: 12px 25px;
        font-size: 1rem;
    }

    .registration-form-container {
        padding: 20px;
    }
}

@media (max-width: 360px) {
    .speakers-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .countdown-section {
        padding: 40px 0;
    }

    .countdown-number {
        font-size: 2.8rem;
    }

    .countdown-label {
        font-size: 1rem;
    }
}

@media (max-width: 768px) {
    .speakers-section {
        padding: 40px 0;
    }

    .speaker-img {
        height: 200px;
    }

    .speaker-name {
        font-size: 1.2rem;
    }

    .speaker-title,
    .speaker-country {
        font-size: 0.9rem;
    }
}