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

/*  primary: #7c3aed 
    primary-dark: #6d28d9
    secondary: #a78bfa
    accent: #06b6d4
    success: #10b981
    bg-light: #f8fafc
    bg-white: #ffffff
    text-primary: #1e293b
    text-secondary: #64748b
    shadow: 0 4px 20px rgba(124, 58, 237, 0.15)
    shadow-lg: 0 10px 40px rgba(124, 58, 237, 0.2)
            
*/

 body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    line-height: 1.6;
    color: #1e293b;
    background: #f8fafc;
    overflow-x: hidden;
}

header {
    background: white;
    padding: 1rem 2rem;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: #1e293b;
}

.logo-text {
    font-size: 1.3rem;
    font-weight: 700;
}

.header-actions {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.btn-login {
    color: #1e293b;
    text-decoration: none;
    padding: 0.6rem 1.5rem;
    border-radius: 8px;
    font-weight: 500;
    transition: all 0.3s ease;
}

.btn-login:hover {
    background: #f8fafc;
}

.btn-signup {
    background: #7c3aed;
    color: white;
    text-decoration: none;
    padding: 0.6rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 4px 20px rgba(124, 58, 237, 0.15);
}

.btn-signup:hover {
    background: #6d28d9;
    transform: translateY(-2px);
    box-shadow: 0 10px 40px rgba(124, 58, 237, 0.2);
}

.hero {
    text-align: center;
    padding: 6rem 2rem 4rem;
    max-width: 900px;
    margin: 0 auto;
}

.hero h1 {
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 800;
    color: #7c3aed;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.hero p {
    font-size: 1.2rem;
    color: #64748b;
    margin-bottom: 2.5rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-cta {
    background: #7c3aed;
    color: white;
    text-decoration: none;
    padding: 1rem 2.5rem;
    border-radius: 10px;
    font-weight: 600;
    font-size: 1.1rem;
    display: inline-block;
    box-shadow: 0 4px 20px rgba(124, 58, 237, 0.15);
    transition: all 0.3s ease;
}

.hero-cta:hover {
    background: #6d28d9;
    transform: translateY(-3px);
    box-shadow: 0 10px 40px rgba(124, 58, 237, 0.2);
}

.demo-preview {
    max-width: 1000px;
    margin: 4rem auto;
    padding: 0 2rem;
}

.preview-card {
    background: white;
    border-radius: 20px;
    padding: 2.5rem;
    box-shadow: 0 10px 40px rgba(124, 58, 237, 0.2);
    position: relative;
    overflow: hidden;
}

.preview-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #7c3aed, #a78bfa);
}

.preview-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 2rem;
}

.preview-avatar {
    width: 50px;
    height: 50px;
    background: linear-gradient(90deg, #7c3aed, #a78bfa);
    border-radius: 50%;
}

.preview-info {
    flex: 1;
}

.preview-title {
    height: 12px;
    background: #f8fafc;
    border-radius: 6px;
    width: 60%;
    margin-bottom: 0.5rem;
}

.preview-subtitle {
    height: 8px;
    background: #f8fafc;
    border-radius: 4px;
    width: 40%;
}

.preview-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.stat-box {
    background: #f8fafc;
    padding: 1.5rem;
    border-radius: 12px;
    height: 80px;
}

.features {
    padding: 6rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.features-header {
    text-align: center;
    margin-bottom: 4rem;
}

.features-header h2 {
    font-size: 2.5rem;
    font-weight: 800;
    color: #1e293b;
    margin-bottom: 1rem;
}

.features-header p {
    font-size: 1.1rem;
    color: #64748b;
}

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

.feature-card {
    background: white;
    padding: 2rem;
    border-radius: 16px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 20px rgba(124, 58, 237, 0.15);
}

.feature-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #7c3aed, #a78bfa);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    padding: 0.75rem;
}

.feature-icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    filter: brightness(0) invert(1);
}

.feature-card h3 {
    font-size: 1.3rem;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 0.75rem;
}

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

.why-section {
    padding: 6rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.why-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.why-text h2 {
    font-size: 2.5rem;
    font-weight: 800;
    color: #1e293b;
    margin-bottom: 1.5rem;
}

.why-text p {
    color: #64748b;
    font-size: 1.1rem;
    margin-bottom: 2rem;
    line-height: 1.8;
}

.why-list {
    list-style: none;
}

.why-list li {
    padding: 0.75rem 0;
    color: #64748b;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding-left: 2rem;
    position: relative;
}

.why-list li::before {
    content: '';
    position: absolute;
    left: 0;
    width: 8px;
    height: 8px;
    background: #7c3aed;
    border-radius: 50%;
}

.why-visual {
    background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #a855f7 100%);
    border-radius: 20px;
    padding: 3rem;
    min-height: 400px;
    display: flex;
    flex-direction: column;
    gap: 2rem;
    position: relative;
    overflow: hidden;
}

.why-visual-card {
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    border-radius: 16px;
    padding: 1.5rem;
    position: relative;
}

.visual-line-long {
    height: 12px;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 6px;
    width: 80%;
    margin-bottom: 0.75rem;
}

.visual-line-short {
    height: 10px;
    background: rgba(255, 255, 255, 0.25);
    border-radius: 5px;
    width: 60%;
}

.visual-line-medium {
    height: 10px;
    background: rgba(255, 255, 255, 0.25);
    border-radius: 5px;
    width: 70%;
    margin-bottom: 0.75rem;
}

@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

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

    .preview-stats {
        grid-template-columns: 1fr;
    }

    .header-actions {
        gap: 0.5rem;
    }

    .btn-login,
    .btn-signup {
        padding: 0.5rem 1rem;
        font-size: 0.9rem;
    }
}

@media (max-width: 494px) {
    .btn-login,
    .btn-signup {
        padding: 0.4rem 0.8rem;
        font-size: 0.85rem;
    }

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

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

.hero,
.demo-preview,
.features,
.why-section {
    animation: fadeInUp 0.8s ease forwards;
}