* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Arial', sans-serif;
    line-height: 1.6;
    color: #333;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 1rem 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-links a {
    color: white;
    text-decoration: none;
    transition: opacity 0.3s;
}

.nav-links a:hover {
    opacity: 0.8;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 150px 0 100px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("https://images.freecreatives.com/wp-content/uploads/2016/04/Beautiful-Plain-Website-Background.jpg");
    /*animation: float 6s ease-in-out infinite;*/
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
}

.hero-content {
    position: relative;
    z-index: 2;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.hero p {
    font-size: 1.3rem;
    margin-bottom: 2rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.cta-button {
    background: linear-gradient(45deg, #ff6b6b, #ee5a24);
    color: white;
    padding: 15px 40px;
    border: none;
    border-radius: 50px;
    font-size: 1.1rem;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s;
    text-decoration: none;
    display: inline-block;
    margin: 10px;
    box-shadow: 0 4px 15px rgba(238, 90, 36, 0.3);
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(238, 90, 36, 0.4);
}

.cta-secondary {
    background: transparent;
    border: 2px solid white;
    color: white;
}

.cta-secondary:hover {
    background: white;
    color: #667eea;
}

/* Stats Section */
.stats {
    background: #f8f9fa;
    padding: 80px 0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    text-align: center;
    /*background: url("https://images.freecreatives.com/wp-content/uploads/2016/04/Beautiful-Plain-Website-Background.jpg");*/
}

.stat-item {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    transition: transform 0.3s;
}

.stat-item:hover {
    transform: translateY(-5px);
}

.stat-number {
    font-size: 3rem;
    font-weight: bold;
    color: #667eea;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 1.1rem;
    color: #666;
}

/* Services Section */
.services {
    padding: 100px 0;
    background: white;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: #333;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.service-card {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    color: white;
    padding: 2rem;
    border-radius: 20px;
    text-align: center;
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
    transition: all 0.5s;
    transform: scale(0);
}

.service-card:hover::before {
    transform: scale(1);
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(245, 87, 108, 0.3);
}

.service-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.service-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    position: relative;
    z-index: 2;
}

.service-card p {
    position: relative;
    z-index: 2;
}

/* Pricing Section */
.pricing {
    background: #f8f9fa;
    padding: 100px 0;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.pricing-card {
    background: white;
    padding: 2rem;
    border-radius: 20px;
    text-align: center;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
}

.pricing-card.featured {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    transform: scale(1.05);
}

.pricing-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0,0,0,0.2);
}

.pricing-card.featured:hover {
    transform: translateY(-10px) scale(1.05);
}

.pricing-badge {
    background: #ff6b6b;
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    position: absolute;
    top: 20px;
    right: 20px;
}

.pricing-title {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.pricing-price {
    font-size: 2.5rem;
    font-weight: bold;
    margin-bottom: 1rem;
}

.pricing-features {
    list-style: none;
    margin-bottom: 2rem;
}

.pricing-features li {
    padding: 0.5rem 0;
    border-bottom: 1px solid #eee;
}

.pricing-card.featured .pricing-features li {
    border-color: rgba(255,255,255,0.2);
}

/* Case Studies */
.case-studies {
    padding: 100px 0;
    background: white;
}

.case-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.case-card {
    background: linear-gradient(135deg, #ffecd2 0%, #fcb69f 100%);
    padding: 2rem;
    border-radius: 20px;
    transition: all 0.3s;
}

.case-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(252, 182, 159, 0.3);
}

.case-results {
    display: flex;
    justify-content: space-between;
    margin-top: 1rem;
}

.case-metric {
    text-align: center;
}

.case-metric-value {
    font-size: 2rem;
    font-weight: bold;
    color: #d63031;
}

.case-metric-label {
    font-size: 0.9rem;
    color: #666;
}

/* Testimonials */
.testimonials {
    background: #f8f9fa;
    padding: 100px 0;
}

.testimonial-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.testimonial-card {
    background: white;
    padding: 2rem;
    border-radius: 20px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    position: relative;
}

.testimonial-quote {
    font-style: italic;
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.testimonial-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: bold;
}

/* Team Section */
.team {
    padding: 100px 0;
    background: white;
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.team-card {
    text-align: center;
    background: white;
    padding: 2rem;
    border-radius: 20px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    transition: all 0.3s;
}

.team-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.15);
}

.team-avatar {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    margin: 0 auto 1rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 2rem;
    font-weight: bold;
}

/* FAQ */
.faq {
    background: #f8f9fa;
    padding: 100px 0;
}

.faq-item {
    background: white;
    margin-bottom: 1rem;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.faq-question {
    padding: 1.5rem;
    cursor: pointer;
    font-weight: bold;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    transition: all 0.3s;
}

.faq-question:hover {
    opacity: 0.9;
}

.faq-answer {
    padding: 1.5rem;
    display: none;
    background: white;
}

.faq-answer.active {
    display: block;
}

/* Contact Form */
.contact {
    padding: 100px 0;
    background: linear-gradient(135deg, #6C68C9 0%, #e1d4eb 100%);
    color: white;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    margin-top: 3rem;
}

.contact-form {
    background: rgba(255,255,255,0.1);
    padding: 2rem;
    border-radius: 20px;
    backdrop-filter: blur(10px);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: bold;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 1rem;
    border: none;
    border-radius: 10px;
    background: rgba(255,255,255,0.2);
    color: white;
    backdrop-filter: blur(5px);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: rgba(255,255,255,0.7);
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.contact-icon {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: rgba(255,255,255,0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

/* Footer */
footer {
    background: #333;
    color: white;
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3 {
    margin-bottom: 1rem;
    color: #667eea;
}

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

.footer-section li {
    margin-bottom: 0.5rem;
}

.footer-section a {
    color: #ccc;
    text-decoration: none;
    transition: color 0.3s;
}

.footer-section a:hover {
    color: #667eea;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #555;
    color: #ccc;
}

/* Blog cards hover effect */
.blog-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.15);
}

/* Partners hover effect */
.partner-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.15);
}

/* Responsive */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }

    .hero p {
        font-size: 1.1rem;
    }

    .contact-grid {
        grid-template-columns: 1fr;
    }

    .nav-links {
        display: none;
    }
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}






/* Thêm style cho form contact */
.contact {
    padding: 100px 0;
    background-color: #f8f9fa;
}

.contact-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.contact-wrapper {
    display: block;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    margin-top: 40px;
}


@media (max-width: 768px) {
    .contact-wrapper {
        grid-template-columns: 1fr;
    }
}

.contact-form {
    background: white;
    padding: 40px;
    border-radius: 15px;
    box-shadow: 0 5px 30px rgba(0,0,0,0.1);
}

.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #333;
}


input.form-control,
textarea.form-control {
    color: #000;
    background-color: #fff;
    border: 1px solid #667eea;
    border-radius: 8px;
    padding: 14px;
    font-size: 16px;
    transition: all 0.3s;
}

input.form-control:focus,
textarea.form-control:focus {
    border-color: #667eea;
    outline: none;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.2);
}





.form-control:focus {
    border-color: #667eea;
    outline: none;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.2);
}

textarea.form-control {
    min-height: 150px;
    resize: vertical;
}

.submit-btn {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    padding: 16px 40px;
    font-size: 18px;
    font-weight: 600;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s;
    display: block;
    width: 100%;
}

.submit-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(102, 126, 234, 0.3);
}

.contact-info {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 40px;
    border-radius: 15px;
    box-shadow: 0 5px 30px rgba(0,0,0,0.1);
}

.contact-info h3 {
    font-size: 24px;
    margin-bottom: 30px;
    position: relative;
    padding-bottom: 15px;
}

.contact-info h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 3px;
    background: white;
}

.contact-detail {
    display: flex;
    align-items: flex-start;
    margin-bottom: 25px;
}

.contact-icon {
    font-size: 24px;
    margin-right: 15px;
    min-width: 30px;
}

.contact-text {
    line-height: 1.6;
}

.contact-text strong {
    display: block;
    margin-bottom: 5px;
}

.contact-social {
    display: flex;
    gap: 15px;
    margin-top: 40px;
}

.social-icon {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    transition: all 0.3s;
}

.social-icon:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-3px);
}

/* Animation */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-on-scroll.visible {
    opacity: 1;
}

/*!* CSS spinner (xoay tròn) *!*/
/*.btn-loading {*/
/*    position: relative;*/
/*    pointer-events: none;*/
/*    opacity: 0.7;*/
/*}*/

/*.submit-btn::after {*/
/*    content: "";*/
/*    position: absolute;*/
/*    right: 10px;*/d .
/*    top: 50%;*/
/*    width: 16px;*/
/*    height: 16px;*/
/*    border: 2px solid #fff;*/
/*    border-top: 2px solid transparent;*/
/*    border-radius: 50%;*/
/*    animation: spin 0.7s linear infinite;*/
/*    transform: translateY(-50%);*/
/*}*/

/*@keyframes spin {*/
/*    to {*/
/*        transform: rotate(360deg) translateY(-50%);*/
/*    }*/
/*}*/


.footer {
    background: #222;
    color: #fff;
    padding: 40px 20px;
    text-align: center;
}

.footer h3 {
    margin-bottom: 15px;
    font-size: 20px;
    color: #f9c74f;
}

.footer p {
    margin: 5px 0;
    line-height: 1.6;
}

.footer-bottom {
    margin-top: 20px;
    font-size: 14px;
    color: #aaa;
}