/* Biến màu sắc */
:root {
    --primary: #1e3c72;
    --primary-light: #2a5298;
    --secondary: #ff6b6b;
    --secondary-light: #ff8e8e;
    --success: #20bf6b;
    --success-light: #26de81;
    --info: #0fb9b1;
    --info-light: #2bcbba;
    --warning: #f7b731;
    --warning-light: #fed330;
    --danger: #eb3b5a;
    --danger-light: #fc5c65;
    --purple: #8854d0;
    --purple-light: #a55eea;
    --pink: #e84393;
    --pink-light: #fd79a8;
    --gradient-1: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
    --gradient-2: linear-gradient(135deg, #ff6b6b 0%, #ff8e8e 100%);
    --gradient-3: linear-gradient(135deg, #20bf6b 0%, #26de81 100%);
    --gradient-4: linear-gradient(135deg, #8854d0 0%, #a55eea 100%);
    --gradient-5: linear-gradient(135deg, #0fb9b1 0%, #2bcbba 100%);
    --gradient-6: linear-gradient(135deg, #f7b731 0%, #fed330 100%);
    --gradient-7: linear-gradient(135deg, #eb3b5a 0%, #fc5c65 100%);
    --gradient-8: linear-gradient(135deg, #e84393 0%, #fd79a8 100%);
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes float {
    0% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-10px);
    }
    100% {
        transform: translateY(0px);
    }
}

@keyframes pulse {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
    100% {
        transform: scale(1);
    }
}

@keyframes rotate {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

@keyframes gradientBg {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}

/* Hero Section */
.hero-section {
    background: var(--gradient-1);
    background-size: 200% 200%;
    animation: gradientBg 15s ease infinite;
    padding: 120px 0 100px;
    color: white;
    position: relative;
    overflow: hidden;
}

.hero-title {
    animation: fadeInUp 1s ease-out;
    position: relative;
    z-index: 2;
    font-size: 3.5rem;
    font-weight: 800;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.hero-subtitle {
    animation: fadeInUp 1s ease-out 0.2s;
    animation-fill-mode: both;
    position: relative;
    z-index: 2;
    font-size: 1.3rem;
    max-width: 600px;
    margin: 0 auto 2rem;
    text-shadow: 0 1px 5px rgba(0, 0, 0, 0.1);
}

.hero-image-container {
    position: relative;
    animation: float 6s ease-in-out infinite;
    z-index: 2;
}

.hero-image {
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
    transition: all 0.3s ease;
    transform: perspective(1000px) rotateY(-5deg);
}

.hero-shape-1 {
    position: absolute;
    top: -30px;
    right: -30px;
    width: 100px;
    height: 100px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    z-index: -1;
    animation: pulse 4s infinite;
}

.hero-shape-2 {
    position: absolute;
    bottom: -20px;
    left: -20px;
    width: 70px;
    height: 70px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    z-index: -1;
    animation: pulse 4s infinite 1s;
}

.hero-wave {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 50px;
    background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1440 320"><path fill="white" fill-opacity="1" d="M0,96L48,112C96,128,192,160,288,160C384,160,480,128,576,122.7C672,117,768,139,864,149.3C960,160,1056,160,1152,138.7C1248,117,1344,75,1392,53.3L1440,32L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z"></path></svg>');
    background-size: cover;
}

.btn-glow {
    position: relative;
    z-index: 1;
    overflow: hidden;
    font-weight: 700;
    letter-spacing: 0.5px;
    padding: 12px 30px;
    border-radius: 50px;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.15);
}

.btn-glow:after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: rgba(255, 255, 255, 0.2);
    transform: rotate(30deg);
    animation: rotate 10s linear infinite;
    z-index: -1;
}

.btn-custom {
    padding: 12px 30px;
    border-radius: 50px;
    font-weight: 600;
    transition: all 0.3s ease;
    text-transform: uppercase;
    font-size: 0.9rem;
    letter-spacing: 0.5px;
}

.btn-custom:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

/* Stats Section */
.stats-section {
    padding: 80px 0;
    background: #f8f9fa;
    position: relative;
    margin-top: -1px;
}

.stats-card {
    background: white;
    border-radius: 15px;
    padding: 30px 20px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    z-index: 1;
    border: 1px solid rgba(0, 0, 0, 0.03);
}

.stats-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
    border-color: rgba(var(--primary-rgb), 0.1);
}

.stats-card:before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(30, 60, 114, 0.03), rgba(42, 82, 152, 0.03));
    z-index: -1;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.stats-card:hover:before {
    opacity: 1;
}

.stats-icon {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    background: var(--gradient-1);
    color: white;
    font-size: 2rem;
    box-shadow: 0 10px 20px rgba(30, 60, 114, 0.2);
    transition: all 0.3s ease;
}

.stats-card:hover .stats-icon {
    transform: scale(1.1) rotate(10deg);
}

.stats-number {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 10px;
    background: linear-gradient(to right, var(--primary), var(--primary-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
}

/* Why Choose Us Section */
.why-choose-section {
    padding: 100px 0;
    position: relative;
    overflow: hidden;
    background: linear-gradient(to right, #f8f9fa, #ffffff);
}

.why-choose-image-container {
    position: relative;
    z-index: 2;
    animation: float 6s ease-in-out infinite;
}

.why-choose-image {
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.why-choose-shape-1 {
    position: absolute;
    top: -30px;
    right: -30px;
    width: 150px;
    height: 150px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(30, 60, 114, 0.05), rgba(42, 82, 152, 0.05));
    z-index: -1;
    animation: pulse 4s infinite;
}

.why-choose-shape-2 {
    position: absolute;
    bottom: -20px;
    left: -20px;
    width: 100px;
    height: 100px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(255, 107, 107, 0.05), rgba(255, 142, 142, 0.05));
    z-index: -1;
    animation: pulse 4s infinite 1s;
}

.why-choose-shape-3 {
    position: absolute;
    bottom: 10%;
    right: -100px;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(136, 84, 208, 0.03), rgba(165, 94, 234, 0.03));
    z-index: 0;
}

.why-choose-item {
    transition: all 0.3s ease;
    padding: 20px;
    border-radius: 15px;
    background: white;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.03);
    border: 1px solid rgba(0, 0, 0, 0.03);
}

.why-choose-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.08);
    border-color: rgba(var(--primary-rgb), 0.1);
}

.why-choose-icon-wrapper {
    width: 60px;
    height: 60px;
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-1);
    color: white;
    font-size: 1.5rem;
    box-shadow: 0 10px 20px rgba(30, 60, 114, 0.15);
    transition: all 0.3s ease;
    flex-shrink: 0;
}

.why-choose-item:hover .why-choose-icon-wrapper {
    transform: scale(1.1) rotate(10deg);
}

.why-choose-title {
    font-weight: 700;
    color: #333;
    transition: all 0.3s ease;
}

.why-choose-item:hover .why-choose-title {
    color: var(--primary);
}

.why-choose-text {
    color: #6c757d;
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 0;
}

/* Features Section */
.features-section {
    padding: 100px 0;
    position: relative;
    overflow: hidden;
    background: #f8f9fa;
}

.section-title {
    position: relative;
    margin-bottom: 50px;
    animation: fadeInUp 1s ease-out;
    font-size: 2.5rem;
    font-weight: 800;
    color: #333;
}

.section-title:after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: var(--gradient-1);
    border-radius: 2px;
}

.feature-card {
    background: white;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
    z-index: 1;
    border: 1px solid rgba(0, 0, 0, 0.03);
}

.feature-card:hover {
    transform: translateY(-15px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    border-color: rgba(var(--primary-rgb), 0.1);
}

.feature-card:before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(30, 60, 114, 0.03), rgba(42, 82, 152, 0.03));
    z-index: -1;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.feature-card:hover:before {
    opacity: 1;
}

.feature-icon-wrapper {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    color: white;
    transition: all 0.3s ease;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.feature-icon-wrapper.primary {
    background: var(--gradient-1);
}

.feature-icon-wrapper.success {
    background: var(--gradient-3);
}

.feature-icon-wrapper.info {
    background: var(--gradient-5);
}

.feature-card:hover .feature-icon-wrapper {
    transform: scale(1.1) rotate(10deg);
}

.feature-icon {
    font-size: 2rem;
    transition: all 0.3s ease;
}

.feature-title {
    font-weight: 700;
    margin-bottom: 15px;
    color: #333;
    transition: all 0.3s ease;
}

.feature-card:hover .feature-title {
    color: var(--primary);
}

.feature-text {
    color: #6c757d;
    font-size: 0.95rem;
    line-height: 1.6;
}

.features-shape-1 {
    position: absolute;
    top: 20%;
    right: -100px;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(30, 60, 114, 0.03), rgba(42, 82, 152, 0.03));
    z-index: 0;
}

.features-shape-2 {
    position: absolute;
    bottom: 10%;
    left: -100px;
    width: 200px;
    height: 200px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(255, 107, 107, 0.03), rgba(255, 142, 142, 0.03));
    z-index: 0;
}

/* Testimonials Section */
.testimonials-section {
    padding: 100px 0;
    position: relative;
    overflow: hidden;
    background: linear-gradient(to right, #ffffff, #f8f9fa);
}

.testimonials-container {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
}

.testimonial-card {
    display: none;
    animation: fadeInUp 0.5s ease-out;
}

.testimonial-content {
    background: white;
    border-radius: 20px;
    padding: 30px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    position: relative;
    z-index: 1;
    border: 1px solid rgba(0, 0, 0, 0.03);
    transition: all 0.3s ease;
}

.testimonial-content:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
    border-color: rgba(var(--primary-rgb), 0.1);
}

.testimonial-rating {
    color: #f7b731;
    font-size: 1.2rem;
}

.testimonial-text {
    color: #6c757d;
    font-size: 1.1rem;
    line-height: 1.7;
    font-style: italic;
}

.testimonial-avatar {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid white;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.testimonial-name {
    font-weight: 700;
    color: #333;
    font-size: 1.1rem;
}

.testimonial-position {
    color: #6c757d;
    font-size: 0.9rem;
}

.testimonial-controls {
    margin-top: 30px;
}

.testimonial-prev,
.testimonial-next {
    width: 40px;
    height: 40px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-color: var(--primary);
    color: var(--primary);
    transition: all 0.3s ease;
}

.testimonial-prev:hover,
.testimonial-next:hover {
    background: var(--primary);
    color: white;
    transform: translateY(-3px);
}

.testimonial-dots {
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.testimonial-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: #e0e0e0;
    margin: 0 5px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.testimonial-dot.active {
    background: var(--primary);
    transform: scale(1.3);
}

.testimonials-shape-1 {
    position: absolute;
    top: 10%;
    left: -100px;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(30, 60, 114, 0.03), rgba(42, 82, 152, 0.03));
    z-index: 0;
}

.testimonials-shape-2 {
    position: absolute;
    bottom: 10%;
    right: -100px;
    width: 200px;
    height: 200px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(255, 107, 107, 0.03), rgba(255, 142, 142, 0.03));
    z-index: 0;
}

/* CTA Section */
.cta-section-container {
    padding: 50px 0;
    background: #f8f9fa;
}

.cta-section {
    background: linear-gradient(45deg, #f8f9fa 0%, #fff 100%);
    border-radius: 20px;
    position: relative;
    overflow: hidden;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.05);
    z-index: 1;
    border: 1px solid rgba(0, 0, 0, 0.03);
}

.cta-title {
    color: #333;
    position: relative;
    z-index: 2;
    animation: fadeInUp 1s ease-out;
    font-size: 2.2rem;
    font-weight: 800;
}

.cta-text {
    color: #6c757d;
    position: relative;
    z-index: 2;
    animation: fadeInUp 1s ease-out 0.2s;
    animation-fill-mode: both;
    font-size: 1.2rem;
}

.btn-cta {
    position: relative;
    z-index: 2;
    overflow: hidden;
    padding: 12px 30px;
    font-weight: 700;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    font-size: 0.9rem;
}

.btn-cta:after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: rgba(255, 255, 255, 0.1);
    transform: rotate(30deg);
    transition: all 0.5s ease;
    z-index: -1;
}

.btn-cta:hover:after {
    transform: rotate(0deg);
}

.cta-shape-1 {
    position: absolute;
    top: -30px;
    right: -30px;
    width: 100px;
    height: 100px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(30, 60, 114, 0.05), rgba(42, 82, 152, 0.05));
    z-index: 0;
}

.cta-shape-2 {
    position: absolute;
    bottom: -20px;
    left: -20px;
    width: 70px;
    height: 70px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(255, 107, 107, 0.05), rgba(255, 142, 142, 0.05));
    z-index: 0;
}

/* Responsive */
@media (max-width: 992px) {
    .hero-section {
        padding: 80px 0 60px;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .features-section,
    .stats-section,
    .why-choose-section,
    .testimonials-section {
        padding: 60px 0;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .cta-title {
        font-size: 1.8rem;
    }
    
    .cta-text {
        font-size: 1.1rem;
    }
}

@media (max-width: 768px) {
    .hero-section {
        padding: 60px 0 40px;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .stats-card {
        padding: 20px 15px;
    }
    
    .stats-icon {
        width: 60px;
        height: 60px;
        font-size: 1.5rem;
    }
    
    .stats-number {
        font-size: 2rem;
    }
    
    .feature-icon-wrapper,
    .why-choose-icon-wrapper {
        width: 60px;
        height: 60px;
        font-size: 1.5rem;
    }
    
    .feature-icon {
        font-size: 1.5rem;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .testimonial-text {
        font-size: 1rem;
    }
}

/* Thêm hiệu ứng cho các phần tử khi scroll */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.6s ease-out;
}

.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}