/* Reset e base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #4CAF50;
    --primary-dark: #388E3C;
    --primary-light: #C8E6C9;
    --error: #D32F2F;
    --text: #212121;
    --text-secondary: #666666;
    --bg: #FFFFFF;
    --bg-alt: #F5F5F5;
    --border: #E0E0E0;
    --shadow: rgba(0, 0, 0, 0.1);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    color: var(--text);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Navigation */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
    z-index: 1000;
}

.nav-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 16px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 700;
    font-size: 20px;
    color: var(--primary);
}

.logo-icon {
    font-size: 24px;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-links a {
    color: var(--text);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
}

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

.cta-button {
    background: var(--primary);
    color: white !important;
    padding: 10px 24px;
    border-radius: 8px;
    transition: background 0.2s, transform 0.2s;
}

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

/* Hero Section */
.hero {
    min-height: 100vh;
    background: linear-gradient(135deg, #E8F5E9 0%, #FFFFFF 100%);
    padding-top: 80px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(76, 175, 80, 0.1) 0%, transparent 70%);
    border-radius: 50%;
}

.hero-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 80px 24px;
    text-align: center;
    position: relative;
    z-index: 1;
}

.hero-title {
    font-size: clamp(36px, 6vw, 64px);
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 24px;
    color: var(--text);
}

.gradient-text {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: clamp(18px, 3vw, 24px);
    color: var(--text-secondary);
    margin-bottom: 48px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.hero-cta {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 64px;
}

.button {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 16px 32px;
    border-radius: 12px;
    font-size: 18px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
}

.button.primary {
    background: var(--primary);
    color: white;
    box-shadow: 0 4px 16px var(--shadow);
}

.button.primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 24px var(--shadow);
}

.button.secondary {
    background: white;
    color: var(--primary);
    border: 2px solid var(--primary);
}

.button.secondary:hover {
    background: var(--primary-light);
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 64px;
    flex-wrap: wrap;
}

.stat {
    text-align: center;
}

.stat-number {
    font-size: 48px;
    font-weight: 800;
    color: var(--primary);
    line-height: 1;
}

.stat-label {
    font-size: 14px;
    color: var(--text-secondary);
    margin-top: 8px;
}

/* Problem Section */
.problem {
    padding: 100px 0;
    background: var(--bg-alt);
}

.section-title {
    font-size: clamp(32px, 5vw, 48px);
    font-weight: 800;
    text-align: center;
    margin-bottom: 64px;
    color: var(--text);
}

.section-subtitle {
    font-size: 20px;
    text-align: center;
    color: var(--text-secondary);
    margin-top: -48px;
    margin-bottom: 64px;
}

.problem-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
}

.problem-card {
    background: white;
    padding: 40px;
    border-radius: 16px;
    text-align: center;
    box-shadow: 0 2px 12px var(--shadow);
    transition: transform 0.3s, box-shadow 0.3s;
}

.problem-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px var(--shadow);
}

.problem-icon {
    font-size: 64px;
    margin-bottom: 24px;
}

.problem-card h3 {
    font-size: 24px;
    margin-bottom: 16px;
    color: var(--text);
}

.problem-card p {
    color: var(--text-secondary);
    line-height: 1.8;
}

/* Features Section */
.features {
    padding: 100px 0;
    background: white;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
}

.feature-card {
    padding: 32px;
    background: var(--bg-alt);
    border-radius: 16px;
    transition: all 0.3s;
}

.feature-card:hover {
    background: var(--primary-light);
    transform: translateY(-4px);
}

.feature-icon {
    font-size: 48px;
    margin-bottom: 16px;
    display: block;
}

.feature-card h3 {
    font-size: 22px;
    margin-bottom: 12px;
    color: var(--text);
}

.feature-card p {
    color: var(--text-secondary);
    line-height: 1.8;
}

/* How it works */
.how-it-works {
    padding: 100px 0;
    background: linear-gradient(135deg, var(--primary-light) 0%, white 100%);
}

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

.step {
    display: flex;
    gap: 32px;
    margin-bottom: 64px;
    align-items: flex-start;
}

.step:last-child {
    margin-bottom: 0;
}

.step-number {
    min-width: 64px;
    height: 64px;
    background: var(--primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    font-weight: 800;
    box-shadow: 0 4px 16px rgba(76, 175, 80, 0.3);
}

.step-content h3 {
    font-size: 28px;
    margin-bottom: 12px;
    color: var(--text);
}

.step-content p {
    font-size: 18px;
    color: var(--text-secondary);
    line-height: 1.8;
}

/* Allergens Preview */
.allergens-preview {
    padding: 100px 0;
    background: white;
}

.allergens-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    max-width: 1000px;
    margin: 0 auto;
}

.allergen-badge {
    background: var(--primary-light);
    padding: 16px 24px;
    border-radius: 12px;
    font-size: 18px;
    font-weight: 600;
    text-align: center;
    border: 2px solid var(--primary);
    transition: all 0.2s;
}

.allergen-badge:hover {
    background: var(--primary);
    color: white;
    transform: scale(1.05);
}

/* Download Section */
.download {
    padding: 100px 0;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    text-align: center;
}

.download .section-title,
.download .section-subtitle {
    color: white;
}

.download-buttons {
    display: flex;
    gap: 24px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 48px;
}

.store-button {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 32px;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 12px;
    color: white;
    text-decoration: none;
    transition: all 0.3s;
}

.store-button:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: translateY(-2px);
}

.store-text {
    font-size: 12px;
    text-align: left;
}

.store-name {
    font-size: 20px;
    font-weight: 700;
    text-align: left;
}

.coming-soon {
    font-size: 16px;
    margin-bottom: 24px;
    opacity: 0.9;
}

.newsletter-form {
    display: flex;
    gap: 12px;
    max-width: 500px;
    margin: 0 auto;
}

.newsletter-form input {
    flex: 1;
    padding: 16px 24px;
    border-radius: 12px;
    border: none;
    font-size: 16px;
}

.newsletter-form button {
    padding: 16px 32px;
    background: white;
    color: var(--primary);
    border: none;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.newsletter-form button:hover {
    background: var(--primary-light);
    transform: translateY(-2px);
}

/* Footer */
.footer {
    background: var(--text);
    color: white;
    padding: 64px 0 32px;
}

.footer-content {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 48px;
}

.footer-brand p {
    margin-top: 16px;
    opacity: 0.8;
}

.footer-column h4 {
    margin-bottom: 16px;
    font-size: 18px;
}

.footer-column a {
    display: block;
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    margin-bottom: 12px;
    transition: color 0.2s;
}

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

.footer-bottom {
    text-align: center;
    padding-top: 32px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    opacity: 0.6;
}

/* Responsive */
@media (max-width: 768px) {
    .nav-links {
        gap: 16px;
    }

    .nav-links a:not(.cta-button) {
        display: none;
    }

    .hero-stats {
        gap: 32px;
    }

    .step {
        flex-direction: column;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .newsletter-form {
        flex-direction: column;
    }
}