/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary: #10b981;
    --accent: #f59e0b;
    --bg-light: #f9fafb;
    --bg-white: #ffffff;
    --text-dark: #1f2937;
    --text-gray: #6b7280;
    --border: #e5e7eb;
    --success: #10b981;
    --spacing: 1rem;
}

html {
    scroll-behavior: smooth;
}

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

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing);
}

/* Navigation */
.navbar {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: var(--bg-white);
    border-bottom: 1px solid var(--border);
    padding: 1rem 0;
    backdrop-filter: blur(10px);
    background-color: rgba(255, 255, 255, 0.95);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    text-decoration: none;
}

.logo-icon {
    width: 32px;
    height: 32px;
    color: var(--primary);
}

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

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

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

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

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

/* Hero Section */
.hero {
    padding: 6rem var(--spacing) 4rem;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(16, 185, 129, 0.05) 100%);
}

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

.hero-title {
    font-family: 'Playfair Display', serif;
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    color: var(--text-dark);
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-gray);
    margin-bottom: 2rem;
    line-height: 1.6;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    margin-bottom: 2rem;
}

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

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

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

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

.btn-secondary:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.btn-large {
    padding: 1.25rem 2rem;
    font-size: 1.125rem;
}

/* Phone Mockup */
.hero-image {
    display: flex;
    justify-content: center;
}

.phone-mockup {
    position: relative;
    width: 300px;
    height: 600px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    border-radius: 3rem;
    padding: 12px;
    box-shadow: 0 20px 60px rgba(99, 102, 241, 0.3);
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: white;
    border-radius: 2.5rem;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.app-preview {
    padding: 2rem 1rem;
    text-align: center;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.app-header {
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--primary);
    margin-bottom: 1rem;
}

.mood-circle {
    font-size: 4rem;
    margin: 1rem 0;
}

.mood-value {
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 1.5rem;
}

.app-content {
    width: 100%;
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.card {
    background: var(--bg-light);
    padding: 1rem;
    border-radius: 0.75rem;
    font-size: 0.9rem;
    color: var(--text-gray);
}

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

.features h2,
.benefits h2,
.testimonials h2,
.cta-section h2 {
    font-family: 'Playfair Display', serif;
    font-size: 2.75rem;
    text-align: center;
    margin-bottom: 3rem;
    color: var(--text-dark);
}

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

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

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(99, 102, 241, 0.1);
    border-color: var(--primary);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

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

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

/* Benefits Section */
.benefits {
    padding: 6rem var(--spacing);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.05) 0%, rgba(16, 185, 129, 0.05) 100%);
}

.benefits-list {
    max-width: 800px;
    margin: 0 auto;
}

.benefit-item {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 2rem;
    padding: 1.5rem;
    background: white;
    border-radius: 0.75rem;
    border-left: 4px solid var(--primary);
}

.benefit-check {
    font-size: 1.5rem;
    color: var(--success);
    font-weight: 700;
    flex-shrink: 0;
}

.benefit-item h3 {
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

.benefit-item p {
    color: var(--text-gray);
}

/* Testimonials Section */
.testimonials {
    padding: 6rem var(--spacing);
    background: var(--bg-white);
}

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

.testimonial-card {
    padding: 2rem;
    background: var(--bg-light);
    border-radius: 1rem;
    border: 1px solid var(--border);
}

.stars {
    color: var(--accent);
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

.testimonial-text {
    color: var(--text-dark);
    margin-bottom: 1rem;
    font-style: italic;
    line-height: 1.6;
}

.testimonial-author {
    color: var(--text-gray);
    font-weight: 600;
}

/* CTA Section */
.cta-section {
    padding: 6rem var(--spacing);
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    text-align: center;
}

.cta-section h2 {
    color: white;
    margin-bottom: 1rem;
}

.cta-section p {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.cta-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.cta-section .btn-primary {
    background-color: white;
    color: var(--primary);
}

.cta-section .btn-primary:hover {
    background-color: var(--bg-light);
}

.cta-section .btn-secondary {
    background-color: rgba(255, 255, 255, 0.2);
    color: white;
    border-color: white;
}

.cta-section .btn-secondary:hover {
    background-color: rgba(255, 255, 255, 0.3);
}

/* Footer */
.footer {
    background: var(--text-dark);
    color: white;
    padding: 3rem var(--spacing) 1rem;
}

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

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

.footer-section p {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 1rem;
}

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

.footer-section a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: color 0.3s ease;
    display: block;
    margin-bottom: 0.5rem;
}

.footer-section a:hover {
    color: white;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.6);
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }

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

    .hero {
        padding: 3rem var(--spacing) 2rem;
    }

    .features,
    .benefits,
    .testimonials,
    .cta-section {
        padding: 3rem var(--spacing);
    }

    .features h2,
    .benefits h2,
    .testimonials h2,
    .cta-section h2 {
        font-size: 2rem;
    }

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

    .phone-mockup {
        width: 250px;
        height: 500px;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

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

    .btn {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }

    .nav-links {
        flex-direction: column;
        gap: 0.5rem;
    }

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

    .phone-mockup {
        width: 200px;
        height: 400px;
    }

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

    .hero-buttons .btn {
        width: 100%;
    }
}