.footer {
    width: 100%;
    max-width: 1280px;
    margin: 20px auto 0;
    background: #4facfe;
    color: white;
    padding: 30px 20px 20px;
}

.footer-container {
    display: grid;
    grid-template-columns: 1fr 1fr 1.2fr;
    gap: 40px;
    max-width: 1200px;
    margin: 0 auto;
}

.footer-column h3 {
    font-size: 14px;
    font-weight: bold;
    margin-bottom: 15px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.footer-column ul {
    list-style: none;
}

.footer-column ul li {
    margin-bottom: 8px;
    font-size: 13px;
    line-height: 1.4;
}

.footer-column ul li a {
    color: white;
    text-decoration: none;
    opacity: 0.9;
    transition: opacity 0.3s;
}

.footer-column ul li a:hover {
    opacity: 1;
    text-decoration: underline;
}

.hotline {
    color: #ff6600;
    font-weight: bold;
}

.newsletter-section {
    background: rgba(255, 255, 255, 0.1);
    padding: 20px;
    border-radius: 8px;
}

.newsletter-section h3 {
    margin-bottom: 15px;
}

.newsletter-form {
    display: flex;
    margin-bottom: 10px;
}

.newsletter-form input {
    flex: 1;
    padding: 10px 15px;
    border: none;
    border-radius: 25px 0 0 25px;
    font-size: 13px;
    outline: none;
}

.newsletter-form button {
    padding: 10px 20px;
    background-color: #ff6600;
    color: white;
    border: none;
    border-radius: 0 25px 25px 0;
    font-weight: bold;
    cursor: pointer;
    font-size: 13px;
    transition: background-color 0.3s;
}

.newsletter-form button:hover {
    background-color: #e55500;
}

.footer-logo-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 12px;
    gap: 20px;
}

.footer-logo-row img {
    max-width: 130px;
    height: auto;
}

/* Responsive cho tablet */
@media (max-width: 768px) {
    .footer {
        margin: 0;
        padding: 20px 15px 15px;
    }
    
    .footer-container {
        grid-template-columns: 1fr 1fr;
        gap: 25px;
    }
    
    .footer-column.newsletter-section {
        display: none;
    }
    
    .footer-logo-row {
        grid-column: 1 / -1;
        flex-direction: column;
        gap: 12px;
        align-items: flex-start;
        margin-top: 15px;
    }
}

/* Responsive cho mobile */
@media (max-width: 480px) {
    .footer {
        padding: 15px 10px 15px;
    }
    
    .footer-container {
        grid-template-columns: 1fr 1fr;
        gap: 20px;
    }
    
    .footer-column h3 {
        font-size: 13px;
        margin-bottom: 12px;
    }
    
    .footer-column ul li {
        margin-bottom: 6px;
        font-size: 12px;
    }
    
    .footer-column.newsletter-section {
        display: none;
    }
    
    .footer-logo-row {
        grid-column: 1 / -1;
        flex-direction: column;
        gap: 10px;
        align-items: flex-start;
        margin-top: 15px;
    }
    
    .footer-logo-row div {
        font-size: 11px;
        line-height: 1.4;
    }
    
    .footer-logo-row img {
        max-width: 110px;
        align-self: flex-start;
    }
}

/* Responsive cho mobile nhỏ */
@media (max-width: 360px) {
    .footer {
        padding: 12px 8px 12px;
    }
    
    .footer-container {
        gap: 15px;
    }
    
    .footer-column h3 {
        font-size: 12px;
        margin-bottom: 10px;
    }
    
    .footer-column ul li {
        margin-bottom: 5px;
        font-size: 11px;
    }
    
    .footer-logo-row div {
        font-size: 10px;
    }
    
    .footer-logo-row img {
        max-width: 100px;
    }
}