/* Reset và Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
}

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #ffffff;
    overflow-x: hidden;
}

/* Global Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.8);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

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

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

/* Smooth transitions for all elements */
* {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

/* Header */
.header {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    z-index: 1000;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border-bottom: 1px solid rgba(226, 232, 240, 0.3);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo {
    cursor: pointer;
    transition: all 0.3s ease;
}

.nav-logo:hover {
    transform: scale(1.02);
}

.logo-content {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.logo-main {
    display: flex;
    align-items: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: #2563eb;
}

.logo-main i {
    margin-right: 10px;
    font-size: 1.8rem;
    animation: pulse 2s infinite;
}

.logo-slogan {
    font-size: 0.75rem;
    font-weight: 500;
    color: #64748b;
    margin-top: 2px;
    font-style: italic;
    transition: all 0.3s ease;
}

.nav-logo:hover .logo-slogan {
    color: #2563eb;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-menu a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    padding: 8px 16px;
    border-radius: 8px;
}

.nav-menu a:hover {
    color: #2563eb;
    background: rgba(37, 99, 235, 0.1);
    transform: translateY(-2px);
}

.nav-menu a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: 2px;
    left: 50%;
    background: linear-gradient(90deg, #2563eb, #3b82f6);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    transform: translateX(-50%);
    border-radius: 1px;
}

.nav-menu a:hover::after {
    width: 80%;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: #333;
    margin: 3px 0;
    transition: 0.3s;
}

/* Language Switcher */
.language-switcher {
    display: flex !important;
    gap: 0.5rem;
    align-items: center;
    z-index: 100;
    visibility: visible !important;
    opacity: 1 !important;
}

.lang-btn {
    padding: 6px 12px;
    border: 2px solid #2563eb;
    background: transparent;
    color: #2563eb;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 600;
    font-size: 0.9rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.lang-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: #2563eb;
    transition: left 0.3s ease;
    z-index: -1;
}

.lang-btn:hover::before,
.lang-btn.active::before {
    left: 0;
}

.lang-btn:hover,
.lang-btn.active {
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.lang-btn.active {
    background: #2563eb;
    color: white;
}

/* Hero Section */
.hero {
    padding: 100px 0 40px;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    min-height: 70vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="25" cy="25" r="1" fill="%23e2e8f0" opacity="0.3"/><circle cx="75" cy="75" r="1" fill="%23cbd5e1" opacity="0.2"/><circle cx="50" cy="10" r="0.5" fill="%23e2e8f0" opacity="0.4"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    opacity: 0.5;
    animation: float 6s ease-in-out infinite;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 2;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
    color: #1e293b;
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 1s ease 0.3s forwards;
}



.highlight {
    color: #2563eb;
    position: relative;
    display: inline-block;
}

.highlight::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.1), rgba(59, 130, 246, 0.1));
    border-radius: 8px;
    transform: scale(0);
    animation: scaleIn 0.6s ease 1.2s forwards;
}

.highlight::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 3px;
    background: linear-gradient(90deg, #2563eb, #3b82f6);
    border-radius: 2px;
    animation: slideRight 0.8s ease 1s forwards;
}

@keyframes slideRight {
    to {
        width: 100%;
    }
}

.hero-description {
    font-size: 1.2rem;
    color: #64748b;
    margin-bottom: 2.5rem;
    line-height: 1.7;
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 1s ease 0.6s forwards;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 1s ease 0.9s forwards;
}

.btn {
    padding: 14px 32px;
    border-radius: 12px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: none;
    cursor: pointer;
    font-size: 1rem;
    position: relative;
    overflow: hidden;
    transform: translateY(0);
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.btn:hover::before {
    left: 100%;
}

.btn-primary {
    background: linear-gradient(135deg, #2563eb, #3b82f6);
    color: white;
    box-shadow: 0 4px 15px rgba(37, 99, 235, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 12px 35px rgba(37, 99, 235, 0.4);
    background: linear-gradient(135deg, #1d4ed8, #2563eb);
}

.btn-primary:active {
    transform: translateY(-1px) scale(0.98);
}

.btn-secondary {
    background: white;
    color: #2563eb;
    border: 2px solid #2563eb;
    box-shadow: 0 4px 15px rgba(37, 99, 235, 0.1);
}

.btn-secondary:hover {
    background: #2563eb;
    color: white;
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 12px 35px rgba(37, 99, 235, 0.3);
}

.btn-secondary:active {
    transform: translateY(-1px) scale(0.98);
}

.hero-image {
    position: relative;
    opacity: 0;
    transform: translateX(50px);
    animation: fadeInRight 1s ease 0.5s forwards;
}

.hero-image::before {
    content: '';
    position: absolute;
    top: -10px;
    left: -10px;
    right: -10px;
    bottom: -10px;
    background: linear-gradient(135deg, #2563eb, #3b82f6);
    border-radius: 30px;
    z-index: -1;
    opacity: 0.1;
    animation: pulse 3s ease-in-out infinite;
}

.hero-image img {
    width: 100%;
    height: 400px;
    object-fit: cover;
    border-radius: 20px;
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.15);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.hero-image:hover img {
    transform: scale(1.02) rotate(1deg);
    box-shadow: 0 35px 70px rgba(0, 0, 0, 0.2);
}

/* Services Section */
.services {
    padding: 40px 0;
    background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
    position: relative;
}

.services::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, #e2e8f0, transparent);
}

.section-header {
    text-align: center;
    margin-bottom: 2.5rem;
    opacity: 1 !important;
    transform: translateY(0) !important;
    visibility: visible !important;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: #1e293b !important;
    margin-bottom: 1rem;
    display: block !important;
    visibility: visible !important;
    opacity: 1 !important;
    position: relative;
    z-index: 10;
}

.section-header p {
    font-size: 1.2rem;
    color: #64748b;
    max-width: 600px;
    margin: 0 auto;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 1400px;
    margin: 0 auto;
}

.service-card {
    background: white;
    padding: 2.5rem;
    border-radius: 20px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid #f1f5f9;
    position: relative;
    overflow: hidden;
    opacity: 0;
    transform: translateY(50px);
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(37, 99, 235, 0.05), transparent);
    transition: left 0.6s;
}

.service-card:hover::before {
    left: 100%;
}

.service-card:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.15);
    border-color: rgba(37, 99, 235, 0.2);
}

.service-card.animate {
    animation: fadeInUp 0.8s ease forwards;
}

.service-card:nth-child(1) { animation-delay: 0.1s; }
.service-card:nth-child(2) { animation-delay: 0.2s; }
.service-card:nth-child(3) { animation-delay: 0.3s; }
.service-card:nth-child(4) { animation-delay: 0.4s; }
.service-card:nth-child(5) { animation-delay: 0.5s; }
.service-card:nth-child(6) { animation-delay: 0.6s; }

.service-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #2563eb, #3b82f6);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    position: relative;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.service-icon::before {
    content: '';
    position: absolute;
    top: -5px;
    left: -5px;
    right: -5px;
    bottom: -5px;
    background: linear-gradient(135deg, #2563eb, #3b82f6);
    border-radius: 25px;
    opacity: 0;
    transition: opacity 0.4s ease;
    z-index: -1;
}

.service-card:hover .service-icon::before {
    opacity: 0.2;
}

.service-card:hover .service-icon {
    transform: scale(1.1) rotate(5deg);
    box-shadow: 0 10px 25px rgba(37, 99, 235, 0.3);
}

.service-icon i {
    font-size: 2.2rem;
    color: white;
    transition: all 0.3s ease;
}

.service-card:hover .service-icon i {
    transform: scale(1.1);
}

.service-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 1rem;
}

.service-card p {
    color: #64748b;
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.service-features {
    list-style: none;
}

.service-features li {
    padding: 0.5rem 0;
    color: #475569;
    position: relative;
    padding-left: 1.5rem;
}

.service-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #2563eb;
    font-weight: bold;
}

/* About Section */
.about {
    padding: 40px 0;
    background: linear-gradient(135deg, #f8fafc 0%, #ffffff 50%, #f1f5f9 100%);
    position: relative;
    overflow: hidden;
}

.about::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, #2563eb, transparent);
    opacity: 0.3;
}

.about::after {
    content: '';
    position: absolute;
    top: 20%;
    right: -10%;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(37, 99, 235, 0.05) 0%, transparent 70%);
    border-radius: 50%;
    animation: float 8s ease-in-out infinite;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 2;
}

.about-text h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 1.5rem;
}

.about-text > p {
    font-size: 1.2rem;
    color: #64748b;
    margin-bottom: 2rem;
    line-height: 1.7;
}

.features {
    display: grid;
    gap: 2rem;
}

.feature {
    display: flex;
    align-items: flex-start;
    gap: 1.5rem;
    padding: 1.5rem;
    background: rgba(255, 255, 255, 0.7);
    border-radius: 16px;
    border: 1px solid rgba(226, 232, 240, 0.5);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    opacity: 1;
    transform: translateX(0);
}

.feature:hover {
    background: rgba(255, 255, 255, 0.9);
    transform: translateX(0) scale(1.02);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.feature.animate {
    animation: fadeInLeft 0.8s ease forwards;
}

.feature:nth-child(1) { animation-delay: 0.1s; }
.feature:nth-child(2) { animation-delay: 0.2s; }
.feature:nth-child(3) { animation-delay: 0.3s; }
.feature:nth-child(4) { animation-delay: 0.4s; }

.feature i {
    font-size: 1.8rem;
    color: #2563eb;
    margin-top: 0.25rem;
    padding: 12px;
    background: rgba(37, 99, 235, 0.1);
    border-radius: 12px;
    transition: all 0.3s ease;
}

.feature:hover i {
    background: rgba(37, 99, 235, 0.2);
    transform: scale(1.1) rotate(5deg);
}

.feature h4 {
    font-size: 1.3rem;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 0.5rem;
    transition: color 0.3s ease;
}

.feature:hover h4 {
    color: #2563eb;
}

.feature p {
    color: #64748b;
    line-height: 1.6;
}

.about-image {
    position: relative;
}

.about-image::before {
    content: '';
    position: absolute;
    top: -15px;
    left: -15px;
    right: -15px;
    bottom: -15px;
    background: linear-gradient(135deg, #2563eb, #3b82f6);
    border-radius: 30px;
    opacity: 0.1;
    z-index: -1;
    animation: pulse 4s ease-in-out infinite;
}

.about-image img {
    width: 100%;
    height: 400px;
    object-fit: cover;
    border-radius: 20px;
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.15);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    opacity: 1;
    transform: translateX(0) scale(1);
}

.about-image:hover img {
    transform: scale(1.03) rotate(-1deg);
    box-shadow: 0 35px 70px rgba(0, 0, 0, 0.2);
}

/* Contact Section */
.contact {
    padding: 40px 0;
    background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
    position: relative;
}

.contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, #e2e8f0, transparent);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

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

.contact-item {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    padding: 2rem;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.9), rgba(248, 250, 252, 0.9));
    border-radius: 16px;
    border: 1px solid rgba(226, 232, 240, 0.5);
    border-left: 4px solid #2563eb;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    opacity: 1;
    transform: translateY(0);
    position: relative;
    overflow: hidden;
}

.contact-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(37, 99, 235, 0.05), transparent);
    transition: left 0.6s;
}

.contact-item:hover::before {
    left: 100%;
}

.contact-item:hover {
    transform: translateY(-5px) scale(1.02);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
    border-left-color: #3b82f6;
}

.contact-item.animate {
    animation: fadeInUp 0.8s ease forwards;
}

.contact-item:nth-child(1) { animation-delay: 0.1s; }
.contact-item:nth-child(2) { animation-delay: 0.2s; }
.contact-item:nth-child(3) { animation-delay: 0.3s; }

.contact-item i {
    font-size: 1.8rem;
    color: #2563eb;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(37, 99, 235, 0.1);
    border-radius: 12px;
    transition: all 0.3s ease;
}

.contact-item:hover i {
    background: rgba(37, 99, 235, 0.2);
    transform: scale(1.1) rotate(5deg);
}

.contact-item h4 {
    font-size: 1.2rem;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 0.5rem;
    transition: color 0.3s ease;
}

.contact-item:hover h4 {
    color: #2563eb;
}

.contact-item p {
    color: #64748b;
    font-weight: 500;
    font-size: 1.1rem;
}

.contact-form {
    background: linear-gradient(135deg, rgba(248, 250, 252, 0.9), rgba(255, 255, 255, 0.9));
    padding: 3rem;
    border-radius: 20px;
    border: 1px solid rgba(226, 232, 240, 0.5);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    position: relative;
    opacity: 1;
    transform: translateY(0);
}

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

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid #e2e8f0;
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
    background: white;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #2563eb;
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* Social Contact */
.social-contact {
    padding: 50px 0;
    background: linear-gradient(135deg, #2563eb, #3b82f6);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.social-contact::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%);
    animation: rotate 20s linear infinite;
}

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

.social-contact h3 {
    color: white;
    font-size: 2rem;
    margin-bottom: 2.5rem;
    position: relative;
    z-index: 2;
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 1s ease 0.3s forwards;
}

.social-buttons {
    display: flex;
    justify-content: center;
    gap: 2rem;
    position: relative;
    z-index: 2;
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 1s ease 0.6s forwards;
}

.social-btn {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 16px 32px;
    background: white;
    color: #2563eb;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
    position: relative;
    overflow: hidden;
}

.social-btn:hover {
    transform: translateY(-5px) scale(1.05);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.25);
}

.social-btn.zalo {
    background: #0068ff;
    color: white;
}

.social-btn.facebook {
    background: #1877f2;
    color: white;
}

/* Footer */
.footer {
    background: #1e293b;
    color: white;
    padding: 40px 0 20px;
}

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

.footer-logo {
    display: flex;
    align-items: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: #2563eb;
    margin-bottom: 1rem;
}

.footer-logo i {
    margin-right: 10px;
    font-size: 1.8rem;
}

.footer-slogan {
    font-size: 1rem;
    font-weight: 600;
    color: #3b82f6;
    margin: 0.5rem 0 1rem 0;
    font-style: italic;
    text-align: left;
}

.footer-section h4 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #2563eb;
}

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

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

.footer-section ul li a {
    color: #94a3b8;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section ul li a:hover {
    color: white;
}

.footer-section ul li i {
    margin-right: 0.5rem;
    color: #2563eb;
}

.footer-bottom {
    border-top: 1px solid #334155;
    padding-top: 2rem;
    text-align: center;
    color: #94a3b8;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: white;
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
        padding: 2rem 0;
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-toggle {
        display: flex;
    }

    .language-switcher {
        order: 2;
        margin-right: 1rem;
        gap: 0.3rem;
    }

    .nav-toggle {
        order: 3;
    }

    .lang-btn {
        padding: 4px 8px;
        font-size: 0.8rem;
    }

    .logo-main {
        font-size: 1.3rem;
    }

    .logo-main i {
        font-size: 1.5rem;
        margin-right: 8px;
    }

    .logo-slogan {
        font-size: 0.65rem;
    }

    .hero {
        padding: 80px 0 30px;
        min-height: 60vh;
    }

    .hero-container {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }

    .hero-title {
        font-size: 2.5rem;
    }



    .hero-buttons {
        justify-content: center;
        flex-wrap: wrap;
    }

    .services {
        padding: 30px 0;
    }

    .services-grid {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 1.5rem;
    }

    .about {
        padding: 30px 0;
    }

    .about-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .contact {
        padding: 30px 0;
    }

    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .social-buttons {
        flex-direction: column;
        align-items: center;
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer-slogan {
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 70px 0 25px;
        min-height: 50vh;
    }

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

    .services, .about, .contact {
        padding: 25px 0;
    }

    .section-header {
        margin-bottom: 2rem;
    }

    .section-header h2 {
        font-size: 2rem;
    }

    .service-card {
        padding: 1.5rem;
    }

    .contact-form {
        padding: 1.5rem;
    }

    .logo-main {
        font-size: 1.1rem;
    }

    .logo-main i {
        font-size: 1.3rem;
        margin-right: 6px;
    }

    .logo-slogan {
        font-size: 0.6rem;
    }

    .footer {
        padding: 30px 0 15px;
    }
}

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

.service-card {
    animation: fadeInUp 0.6s ease forwards;
}

.service-card:nth-child(1) { animation-delay: 0.1s; }
.service-card:nth-child(2) { animation-delay: 0.2s; }
.service-card:nth-child(3) { animation-delay: 0.3s; }
.service-card:nth-child(4) { animation-delay: 0.4s; }

/* Loading state */
body.loading * {
    animation-play-state: paused !important;
}

/* Enhanced section transitions */
.section-header {
    opacity: 0;
    transform: translateY(50px);
}

.about-text {
    opacity: 1;
    transform: translateX(0);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.about-image {
    opacity: 1;
    transform: translateX(0);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Contact form enhancements */
.contact-form {
    position: relative;
    overflow: hidden;
}

.contact-form::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(37, 99, 235, 0.03), transparent);
    animation: shimmer 3s ease-in-out infinite;
}

@keyframes shimmer {
    0% { transform: translateX(-100%) translateY(-100%) rotate(45deg); }
    100% { transform: translateX(100%) translateY(100%) rotate(45deg); }
}

/* Enhanced form inputs */
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: #2563eb;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
    transform: translateY(-2px);
}

/* Social buttons enhancement */
.social-btn {
    position: relative;
    overflow: hidden;
}

.social-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.social-btn:hover::before {
    left: 100%;
}

/* Footer animation */
.footer {
    position: relative;
    overflow: hidden;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, #334155, transparent);
}

/* Smooth scrolling for older browsers */
@media (prefers-reduced-motion: no-preference) {
    html {
        scroll-behavior: smooth;
    }
}

/* Performance optimizations */
.hero-image img,
.about-image img {
    will-change: transform;
}

.service-card {
    will-change: transform, box-shadow;
}

.btn {
    will-change: transform, box-shadow;
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f5f9;
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, #2563eb, #3b82f6);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, #1d4ed8, #2563eb);
}