/* =============================================
   CSS Reset and Base Styles
   ============================================= */

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: #2c3e50;
    background-color: #ffffff;
    overflow-x: hidden;
}

/* =============================================
   Color Variables
   ============================================= */

:root {
    --primary-blue: #2563eb;
    --secondary-blue: #1e40af;
    --light-blue: #3b82f6;
    --accent-blue: #60a5fa;
    --dark-blue: #1e3a8a;
    --navy-blue: #1e293b;
    --light-gray: #f8fafc;
    --medium-gray: #64748b;
    --dark-gray: #334155;
    --white: #ffffff;
    --shadow: rgba(0, 0, 0, 0.1);
    --shadow-light: rgba(0, 0, 0, 0.05);
    --gradient: linear-gradient(135deg, var(--primary-blue) 0%, var(--secondary-blue) 100%);
}

/* =============================================
   Typography
   ============================================= */

h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: 1rem;
    color: var(--navy-blue);
}

h1 {
    font-size: 3.5rem;
    font-weight: 700;
}

h2 {
    font-size: 2.5rem;
    font-weight: 600;
}

h3 {
    font-size: 1.5rem;
    font-weight: 600;
}

p {
    margin-bottom: 1rem;
    color: var(--medium-gray);
    font-size: 1.1rem;
    line-height: 1.7;
}

/* =============================================
   Layout and Container
   ============================================= */

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* =============================================
   Header Styles
   ============================================= */

.header {
    background: var(--white);
    padding: 2rem 0;
    box-shadow: 0 2px 20px var(--shadow-light);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
}

.logo {
    text-align: center;
}

.logo-img {
    height: 120px;
    width: auto;
    transition: transform 0.3s ease;
}

.logo-img:hover {
    transform: scale(1.05);
}

/* =============================================
   Hero Section
   ============================================= */

.hero {
    background: var(--gradient);
    padding: 6rem 0;
    text-align: 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="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    margin: 0 auto;
}

.hero-title {
    color: var(--white);
    font-size: 4rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.hero-subtitle {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.5rem;
    font-weight: 400;
    margin-bottom: 2rem;
    opacity: 0.95;
}

.hero-description {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 20px;
    padding: 2.5rem;
    margin-top: 3rem;
}

.hero-description p {
    color: var(--white);
    font-size: 1.2rem;
    margin: 0;
    line-height: 1.8;
}

/* =============================================
   Features Section
   ============================================= */

.features {
    padding: 8rem 0;
    background: var(--light-gray);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 3rem;
    margin-top: 4rem;
}

.feature-card {
    background: var(--white);
    padding: 3rem 2rem;
    border-radius: 20px;
    text-align: center;
    box-shadow: 0 10px 40px var(--shadow-light);
    transition: all 0.3s ease;
    border: 1px solid rgba(37, 99, 235, 0.1);
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 60px var(--shadow);
    border-color: var(--accent-blue);
}

.feature-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 2rem;
    color: var(--white);
    transition: transform 0.3s ease;
}

.feature-card:hover .feature-icon {
    transform: scale(1.1) rotate(5deg);
}

.feature-card h3 {
    color: var(--navy-blue);
    margin-bottom: 1.5rem;
    font-size: 1.4rem;
}

.feature-card p {
    color: var(--medium-gray);
    line-height: 1.7;
}

/* =============================================
   CTA Section
   ============================================= */

.cta {
    padding: 8rem 0;
    background: var(--white);
    text-align: center;
}

.cta-content {
    max-width: 700px;
    margin: 0 auto;
}

.cta h2 {
    color: var(--navy-blue);
    margin-bottom: 1.5rem;
    font-size: 2.5rem;
}

.cta p {
    font-size: 1.2rem;
    color: var(--medium-gray);
    margin-bottom: 3rem;
}

.cta-buttons {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* =============================================
   Button Styles
   ============================================= */

.btn {
    display: inline-block;
    padding: 1rem 2.5rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s ease;
    border: 2px solid transparent;
    cursor: pointer;
}

.btn-primary {
    background: var(--gradient);
    color: var(--white);
    box-shadow: 0 4px 20px rgba(37, 99, 235, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(37, 99, 235, 0.4);
}

.btn-secondary {
    background: transparent;
    color: var(--primary-blue);
    border-color: var(--primary-blue);
}

.btn-secondary:hover {
    background: var(--primary-blue);
    color: var(--white);
    transform: translateY(-3px);
    box-shadow: 0 4px 20px rgba(37, 99, 235, 0.3);
}

/* =============================================
   Footer Styles
   ============================================= */

.footer {
    background: #19345b;
    padding: 3rem 0 2rem;
    color: var(--white);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 2rem;
}

.footer-brand {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
}

.footer-logo {
    height: 60px;
    width: auto;
    transition: transform 0.3s ease;
}

.footer-logo:hover {
    transform: scale(1.05);
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.7);
    margin: 0;
    font-size: 0.9rem;
}

.footer-info p {
    color: rgba(255, 255, 255, 0.8);
    margin: 0;
    font-size: 1rem;
    font-weight: 500;
}

/* =============================================
   Responsive Design
   ============================================= */

@media (max-width: 768px) {
    .container {
        padding: 0 1rem;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.2rem;
    }
    
    .hero-description {
        padding: 2rem;
    }
    
    .hero-description p {
        font-size: 1.1rem;
    }
    
    h2 {
        font-size: 2rem;
    }
    
    .features {
        padding: 4rem 0;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
        margin-top: 2rem;
    }
    
    .feature-card {
        padding: 2rem 1.5rem;
    }
    
    .cta {
        padding: 4rem 0;
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        padding: 0.8rem 2rem;
        width: 100%;
        max-width: 300px;
        text-align: center;
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-brand {
        align-items: center;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 4rem 0;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .logo-img {
        height: 80px;
    }
    
    .header {
        padding: 1.5rem 0;
    }
    
    .features {
        padding: 3rem 0;
    }
    
    .cta {
        padding: 3rem 0;
    }
}

/* =============================================
   Animation and Effects
   ============================================= */

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

.hero-content {
    animation: fadeInUp 1s ease-out;
}

.feature-card {
    animation: fadeInUp 0.8s ease-out;
}

.feature-card:nth-child(2) {
    animation-delay: 0.2s;
}

.feature-card:nth-child(3) {
    animation-delay: 0.4s;
}

/* =============================================
   Accessibility and Performance
   ============================================= */

@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    html {
        scroll-behavior: auto;
    }
}