:root {
    --primary-color: 220 70% 50%; /* #3b82f6 */
    --primary-dark: 220 70% 40%; /* #2563eb */
    --secondary-color: 210 11% 98%; /* #f8fafc */
    --dark-color: 210 11% 15%; /* #1e293b */
    --light-gray: 210 11% 96%; /* #f1f5f9 */
    --text-color: 210 11% 25%; /* #475569 */
    --border-color: 210 16% 93%; /* #e2e8f0 */
    --success-color: 142 71% 45%; /* #22c55e */
    --gradient-primary: linear-gradient(135deg, hsl(220, 70%, 50%), hsl(220, 70%, 40%));
    --gradient-dark: linear-gradient(135deg, hsl(210, 11%, 15%), hsl(210, 11%, 25%));
}

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

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: hsl(var(--text-color));
    overflow-x: hidden;
}

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}

/* Navigation */
.navbar {
    background: rgba(30, 41, 59, 0.95);
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
    padding: 1rem 0;
}

.navbar.scrolled {
    background: hsl(var(--dark-color));
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
}

.navbar-brand {
    font-size: 1.5rem;
    font-weight: 700;
    color: white !important;
}

.navbar-nav .nav-link {
    color: rgba(255, 255, 255, 0.8) !important;
    font-weight: 500;
    margin: 0 0.5rem;
    transition: all 0.3s ease;
    position: relative;
}

.navbar-nav .nav-link:hover,
.navbar-nav .nav-link.active {
    color: white !important;
    transform: translateY(-1px);
}

.navbar-nav .nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 50%;
    width: 0;
    height: 2px;
    background: hsl(var(--primary-color));
    transition: all 0.3s ease;
    transform: translateX(-50%);
}

.navbar-nav .nav-link:hover::after,
.navbar-nav .nav-link.active::after {
    width: 80%;
}

/* Hero Section */
.hero-section {
    background: var(--gradient-dark);
    position: relative;
    color: white;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Ccircle cx='30' cy='30' r='4'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E") repeat;
    animation: float 20s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(180deg); }
}

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

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 2rem;
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 1s ease 0.5s forwards;
}

.hero-subtitle {
    font-size: 1.25rem;
    font-weight: 300;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto 2rem;
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 1s ease 0.8s forwards;
}

.hero-buttons {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 1s ease 1.1s forwards;
}

@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 1s ease 0.5s forwards;
}

.fade-in-delay {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 1s ease 0.8s forwards;
}

.fade-in-delay-2 {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 1s ease 1.1s forwards;
}

/* Buttons */
.btn {
    font-weight: 600;
    padding: 0.75rem 2rem;
    border-radius: 50px;
    transition: all 0.3s ease;
    border: none;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(59, 130, 246, 0.4);
    color: white;
}

.btn-outline-light {
    border: 2px solid rgba(255, 255, 255, 0.3);
    color: white;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
}

.btn-outline-light:hover {
    background: white;
    color: hsl(var(--dark-color));
    transform: translateY(-2px);
}

.btn-light:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(255, 255, 255, 0.3);
}

/* Sections */
section {
    padding: 5rem 0;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: hsl(var(--dark-color));
    margin-bottom: 1rem;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: var(--gradient-primary);
    border-radius: 2px;
}

.section-subtitle {
    font-size: 1.1rem;
    color: hsl(var(--text-color));
    opacity: 0.8;
    max-width: 600px;
    margin: 0 auto;
}

/* About Section */
.about-content h3 {
    color: hsl(var(--dark-color));
    font-weight: 700;
    font-size: 2rem;
}

.feature-item {
    display: flex;
    align-items: center;
    font-weight: 500;
}

.stat-card {
    background: white;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

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

.stat-card h3 {
    font-size: 2.5rem;
    font-weight: 700;
    color: hsl(var(--primary-color));
}

/* Service Cards */
.service-card {
    background: white;
    padding: 2.5rem 2rem;
    border-radius: 20px;
    text-align: center;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    border: 1px solid hsl(var(--border-color));
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.service-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    transition: all 0.3s ease;
}

.service-icon i {
    font-size: 2rem;
    color: white;
}

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

.service-card h4 {
    color: hsl(var(--dark-color));
    font-weight: 600;
    margin-bottom: 1rem;
}

.service-card p {
    color: hsl(var(--text-color));
    opacity: 0.8;
}

/* Solution Cards */
.solution-card {
    background: white;
    border-radius: 20px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    transition: all 0.3s ease;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.solution-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.15);
}

.solution-header {
    padding: 2rem;
    background: hsl(var(--secondary-color));
    display: flex;
    align-items: center;
}

.solution-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 1rem;
}

.solution-icon i {
    font-size: 1.5rem;
    color: white;
}

.solution-title h4 {
    color: hsl(var(--dark-color));
    font-weight: 700;
    margin-bottom: 0.25rem;
}

.solution-body {
    padding: 2rem;
    flex-grow: 1;
}

.solution-body p {
    color: hsl(var(--text-color));
    margin-bottom: 1.5rem;
}

.solution-features {
    list-style: none;
    padding: 0;
}

.solution-features li {
    padding: 0.5rem 0;
    display: flex;
    align-items: center;
}

.solution-footer {
    padding: 0 2rem 2rem;
}

/* CTA Section */
.cta-section {
    background: var(--gradient-primary);
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='100' height='100' viewBox='0 0 100 100' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='%23ffffff' fill-opacity='0.1'%3E%3Cpolygon points='50 0 60 40 100 50 60 60 50 100 40 60 0 50 40 40'/%3E%3C/g%3E%3C/svg%3E") repeat;
    animation: rotate 60s linear infinite;
}

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

/* Contact Form */
.contact-form-wrapper {
    background: white;
    padding: 3rem;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.form-control,
.form-select {
    border: 2px solid hsl(var(--border-color));
    border-radius: 10px;
    padding: 0.75rem 1rem;
    transition: all 0.3s ease;
    font-weight: 500;
}

.form-control:focus,
.form-select:focus {
    border-color: hsl(var(--primary-color));
    box-shadow: 0 0 0 0.2rem rgba(59, 130, 246, 0.15);
}

.form-label {
    font-weight: 600;
    color: hsl(var(--dark-color));
    margin-bottom: 0.5rem;
}

.contact-info i {
    color: hsl(var(--primary-color));
}

.contact-info h5 {
    color: hsl(var(--dark-color));
    font-weight: 600;
    margin-bottom: 0.5rem;
}

/* Footer */
.footer {
    background: hsl(var(--dark-color));
    color: white;
}

.footer-brand {
    font-size: 1.25rem;
    font-weight: 700;
    display: flex;
    align-items: center;
}

.footer-text {
    opacity: 0.8;
    margin-bottom: 0;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    margin: 0 1rem;
    transition: all 0.3s ease;
}

.footer-links a:hover {
    color: white;
}

.footer-social {
    margin-top: 1rem;
}

.social-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    color: white;
    text-decoration: none;
    margin: 0 0.5rem;
    transition: all 0.3s ease;
}

.social-link:hover {
    background: hsl(var(--primary-color));
    color: white;
    transform: translateY(-2px);
}

.footer-divider {
    border-color: rgba(255, 255, 255, 0.1);
    margin: 2rem 0 1rem;
}

.copyright-text {
    opacity: 0.6;
    margin-bottom: 0;
}

/* Animations */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease;
}

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

/* Responsive Design */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .contact-form-wrapper {
        padding: 2rem;
    }
    
    .solution-header {
        flex-direction: column;
        text-align: center;
    }
    
    .solution-icon {
        margin-right: 0;
        margin-bottom: 1rem;
    }
    
    .hero-buttons .btn {
        display: block;
        margin-bottom: 1rem;
        width: 100%;
    }
    
    .footer-links a {
        display: block;
        margin: 0.5rem 0;
    }
}

@media (max-width: 576px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .service-card,
    .contact-form-wrapper {
        padding: 1.5rem;
    }
    
    .solution-header,
    .solution-body,
    .solution-footer {
        padding: 1.5rem;
    }
}

/* Loading animation */
.loading {
    opacity: 0.6;
    pointer-events: none;
}

.btn.loading {
    position: relative;
    color: transparent;
}

.btn.loading::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    top: 50%;
    left: 50%;
    margin-left: -10px;
    margin-top: -10px;
    border: 2px solid transparent;
    border-top-color: currentColor;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* Success/Error messages */
.alert {
    border-radius: 10px;
    border: none;
    padding: 1rem 1.5rem;
    margin-bottom: 1rem;
}

.alert-success {
    background-color: rgba(34, 197, 94, 0.1);
    color: hsl(var(--success-color));
    border-left: 4px solid hsl(var(--success-color));
}

.alert-danger {
    background-color: rgba(239, 68, 68, 0.1);
    color: #dc2626;
    border-left: 4px solid #dc2626;
}