:root {
    --color-primary: #6366F1;
    --color-secondary: #EC4899;
    --color-bg: #F9FAFB;
    --color-dark: #1F2937;
    --color-light: #FFFFFF;
    --font-main: 'Poppins', sans-serif;
}

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

body {
    font-family: var(--font-main);
    line-height: 1.6;
    color: var(--color-dark);
    background: var(--color-bg);
}

a {
    text-decoration: none;
    color: inherit;
}

.navbar {
    background: var(--color-light);
    box-shadow: 0 2px 4px rgba(0,0,0,0.06);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
}

.logo {
    font-weight: 700;
    color: var(--color-primary);
}

.nav-links {
    display: flex;
    gap: 1.5rem;
    list-style: none;
}

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

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

.hero {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    color: var(--color-light);
    display: flex;
    align-items: center;
    min-height: 85vh;
    text-align: center;
}

.hero-content {
    max-width: 700px;
}

.hero h2 {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 600;
    margin-bottom: 1rem;
}

.hero p {
    font-size: 1.125rem;
    margin-bottom: 2rem;
}

.btn-primary, .btn-secondary {
    display: inline-block;
    padding: 0.75rem 2rem;
    border-radius: 50px;
    font-weight: 600;
    transition: transform 0.2s ease;
}

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

.btn-secondary {
    background: var(--color-dark);
    color: var(--color-light);
}

.btn-primary:hover, .btn-secondary:hover {
    transform: translateY(-2px);
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 2rem;
    color: var(--color-primary);
}

.features-section {
    padding: 4rem 0;
}

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

.feature-card {
    background: var(--color-light);
    border-radius: 1rem;
    padding: 2rem;
    box-shadow: 0 8px 24px rgba(0,0,0,0.04);
    text-align: center;
}

.feature-card h3 {
    margin-bottom: 0.75rem;
    color: var(--color-secondary);
}

.about-section {
    padding: 4rem 0;
}

.about-flex {
    display: flex;
    flex-direction: column-reverse;
    gap: 2rem;
}

.about-image img {
    width: 100%;
    border-radius: 1rem;
    box-shadow: 0 8px 24px rgba(0,0,0,0.08);
}

@media (min-width: 768px) {
    .about-flex {
        flex-direction: row;
        align-items: center;
    }
    .about-text, .about-image {
        flex: 1;
    }
}

.cta-section {
    background: var(--color-primary);
    color: var(--color-light);
    text-align: center;
    padding: 4rem 0;
}

.footer {
    background: var(--color-dark);
    color: var(--color-light);
    padding: 1.5rem 0;
    font-size: 0.875rem;
}

.footer-flex {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.social-links a {
    margin-left: 1rem;
}

.social-links a:hover {
    color: var(--color-secondary);
}

/* smooth fade-in on scroll */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}
.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}