:root {
    --primary: #2962FF;
    --primary-dark: #0039CB; /* Darker shade for hover */
    --on-primary: #FFFFFF;
    --background: #F5F6F8;
    --surface: #FFFFFF;
    --text-main: #212121;
    --text-secondary: #757575;
    --outline: #E0E0E0;
    --container-bg: #E3F2FD;
    --radius: 12px;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
}

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

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

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

/* Header */
.header {
    background-color: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--outline);
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    text-decoration: none;
    letter-spacing: -0.5px;
    white-space: nowrap;
}

.nav {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav a {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    transition: color 0.3s;
}

.nav a:hover {
    color: var(--primary);
}

.nav a.btn {
    color: var(--on-primary);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius);
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    cursor: pointer;
    border: 2px solid transparent;
}

.btn-primary {
    background-color: var(--primary);
    color: var(--on-primary);
}

.btn-primary:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(41, 98, 255, 0.3);
}

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

.btn-outline:hover {
    background-color: var(--container-bg);
    transform: translateY(-2px);
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

/* Hero Section */
.hero {
    padding: 6rem 0;
    position: relative;
    overflow: hidden;
}

.hero-bg-shape {
    position: absolute;
    top: -20%;
    right: -10%;
    width: 60%;
    height: 140%;
    background: linear-gradient(135deg, var(--container-bg), #FFFFFF);
    border-radius: 50% 0 0 50%;
    z-index: -1;
    opacity: 0.6;
    transform: skewX(-10deg);
}

.hero-container {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 4rem;
    align-items: center;
}

.hero-title {
    font-size: 3.5rem;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    color: var(--text-main);
}

.highlight {
    color: var(--primary);
    position: relative;
    display: inline-block;
}

.highlight::after {
    content: '';
    position: absolute;
    bottom: 0.2em;
    left: 0;
    width: 100%;
    height: 0.3em;
    background-color: rgba(41, 98, 255, 0.15);
    z-index: -1;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    max-width: 600px;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.hero-image {
    position: relative;
    perspective: 1000px;
}

.mockup-placeholder {
    width: 100%;
    aspect-ratio: 9/16;
    background-color: var(--surface);
    border-radius: 24px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.1);
    border: 8px solid var(--text-main);
    overflow: hidden;
    transform: rotateY(-10deg) rotateX(5deg);
    transition: transform 0.5s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.mockup-placeholder:hover {
    transform: rotateY(0) rotateX(0);
}

.mockup-placeholder img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Features */
.features {
    padding: 6rem 0;
    background-color: #FFFFFF;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 4rem;
    color: var(--text-main);
}

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

.feature-card {
    background: var(--background);
    padding: 2.5rem;
    border-radius: var(--radius);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid transparent;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow);
    border-color: var(--container-bg);
    background: #FFFFFF;
}

.feature-icon {
    width: 64px;
    height: 64px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.bg-blue-light {
    background-color: var(--container-bg);
    color: var(--primary);
}

.feature-card h3 {
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.feature-card p {
    color: var(--text-secondary);
}

/* Footer */
.footer {
    background-color: #FFFFFF;
    padding: 2rem 0;
    border-top: 1px solid var(--outline);
}

.footer-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-secondary);
}

.footer-links {
    display: flex;
    gap: 1.5rem;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
}

.footer-links a:hover {
    color: var(--primary);
}

/* Response */
@media (max-width: 768px) {
    .header-container {
        padding: 0 1rem;
    }
    
    .nav {
        gap: 1rem;
    }
    
    .logo {
        font-size: 1.25rem;
    }
    
    .hero {
        padding: 3rem 0;
    }
    
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 3rem;
    }
    
    .hero-subtitle {
        margin: 0 auto 2rem;
    }
    
    .hero-actions {
        justify-content: center;
        flex-direction: column;
        width: 100%;
    }
    
    .btn {
        width: 100%;
    }
    
    .mockup-placeholder {
        transform: none;
        max-width: 300px;
        margin: 0 auto;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .footer-container {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
}