/* ===== Global Styles ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #6366f1;
    --primary-light: #818cf8;
    --primary-dark: #4f46e5;
    --secondary-color: #ec4899;
    --accent-color: #f59e0b;
    --text-dark: #1f2937;
    --text-light: #6b7280;
    --bg-light: #f9fafb;
    --bg-white: #ffffff;
    --border-color: #e5e7eb;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    color: var(--text-dark);
    background-color: var(--bg-white);
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ===== Navigation ===== */
.navbar {
    background: var(--bg-white);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-sm);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 20px;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.nav-brand i {
    font-size: 1.75rem;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

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

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

.nav-cta {
    background: var(--primary-color);
    color: white !important;
    padding: 0.5rem 1.5rem;
    border-radius: 0.5rem;
    transition: background 0.3s ease;
}

.nav-cta:hover {
    background: var(--primary-dark);
}

/* ===== Hero Section ===== */
.hero {
    background: linear-gradient(135deg, #f9fafb 0%, #f3f4f6 100%);
    padding: 6rem 0;
    position: relative;
    overflow: hidden;
}

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

.hero-content h1 {
    font-size: 3rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-content p {
    font-size: 1.125rem;
    color: var(--text-light);
    margin-bottom: 2rem;
    line-height: 1.8;
}

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

.hero-visual {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 400px;
}

.gradient-orb {
    position: absolute;
    width: 300px;
    height: 300px;
    background: linear-gradient(135deg, var(--primary-light), var(--secondary-color));
    border-radius: 50%;
    opacity: 0.3;
    filter: blur(40px);
    animation: float 6s ease-in-out infinite;
}

.hero-visual i {
    font-size: 8rem;
    color: var(--primary-color);
    z-index: 10;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-30px); }
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

/* ===== Buttons ===== */
.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 0.5rem;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
}

.btn-primary {
    background: var(--primary-color);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: var(--bg-light);
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.btn-secondary:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
}

.btn-large {
    padding: 1rem 2.5rem;
    font-size: 1.125rem;
}

/* ===== Features Section ===== */
.features {
    padding: 6rem 0;
    background: var(--bg-white);
}

.features h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 4rem;
    color: var(--text-dark);
}

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

.feature-card {
    background: var(--bg-light);
    padding: 2rem;
    border-radius: 1rem;
    text-align: center;
    transition: all 0.3s ease;
    border: 1px solid var(--border-color);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.feature-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    font-size: 1.75rem;
    color: white;
}

.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
    color: var(--text-dark);
}

.feature-card p {
    color: var(--text-light);
    line-height: 1.6;
}

/* ===== How It Works Section ===== */
.how-it-works {
    padding: 6rem 0;
    background: linear-gradient(135deg, #f9fafb 0%, #f3f4f6 100%);
}

.how-it-works h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 4rem;
    color: var(--text-dark);
}

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

.step {
    background: var(--bg-white);
    padding: 2rem;
    border-radius: 1rem;
    text-align: center;
    flex: 1;
    min-width: 250px;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
}

.step-number {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 auto 1rem;
}

.step h3 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
    color: var(--text-dark);
}

.step p {
    color: var(--text-light);
}

.step-arrow {
    color: var(--primary-color);
    font-size: 2rem;
    display: flex;
    align-items: center;
}

@media (max-width: 768px) {
    .step-arrow {
        transform: rotate(90deg);
    }
}

/* ===== CTA Section ===== */
.cta {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    padding: 6rem 0;
    text-align: center;
    color: white;
}

.cta h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: white;
}

.cta p {
    font-size: 1.125rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.cta .btn {
    background: white;
    color: var(--primary-color);
    margin: 0 auto;
}

.cta .btn:hover {
    background: var(--bg-light);
    transform: translateY(-2px);
}

.cta-note {
    font-size: 0.875rem;
    margin-top: 1rem;
    opacity: 0.8;
}

/* ===== Footer ===== */
.footer {
    background: var(--text-dark);
    color: white;
    padding: 4rem 0 2rem;
}

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

.footer-section h4 {
    margin-bottom: 1rem;
    font-size: 1.125rem;
}

.footer-section p {
    color: #9ca3af;
    line-height: 1.6;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section a {
    color: #9ca3af;
    text-decoration: none;
    transition: color 0.3s ease;
}

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

.social-links {
    display: flex;
    gap: 1rem;
    font-size: 1.5rem;
}

.footer-bottom {
    border-top: 1px solid #374151;
    padding-top: 2rem;
    text-align: center;
    color: #9ca3af;
}

/* ===== Responsive Design ===== */
@media (max-width: 768px) {
    .hero .container {
        grid-template-columns: 1fr;
        padding: 3rem 0;
    }

    .hero-content h1 {
        font-size: 2rem;
    }

    .hero-visual {
        height: 300px;
    }

    .hero-visual i {
        font-size: 5rem;
    }

    .gradient-orb {
        width: 200px;
        height: 200px;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .btn {
        justify-content: center;
    }

    .nav-menu {
        gap: 1rem;
        font-size: 0.9rem;
    }

    .features h2,
    .how-it-works h2,
    .cta h2 {
        font-size: 1.75rem;
    }

    .steps {
        flex-direction: column;
    }

    .step-arrow {
        transform: rotate(90deg);
        margin: -1rem 0;
    }

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

@media (max-width: 480px) {
    .hero-content h1 {
        font-size: 1.5rem;
    }

    .hero-content p {
        font-size: 1rem;
    }

    .nav-menu {
        gap: 0.5rem;
    }

    .nav-brand {
        font-size: 1.25rem;
    }

    .nav-brand i {
        font-size: 1.5rem;
    }
}