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

:root {
    /* Colores */
    --color-primary: #2E7D32;
    --color-primary-dark: #1B5E20;
    --color-primary-light: #4CAF50;
    --color-secondary: #5D4037;
    --color-accent: #FFC107;
    --color-bg: #FFFFFF;
    --color-bg-alt: #F5F5F5;
    --color-text: #1C1B1F;
    --color-text-light: #666666;
    --color-border: #E0E0E0;
    --color-shadow: rgba(0, 0, 0, 0.1);

    /* Espaciado */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;

    /* Bordes */
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-full: 9999px;

    /* Transiciones */
    --transition: 0.3s ease;
}

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

img {
    max-width: 100%;
    height: auto;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

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

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

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

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-primary);
}

.logo-icon {
    font-size: 1.5rem;
}

.nav {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
}

.nav-link {
    font-weight: 500;
    color: var(--color-text);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
}

.nav-link:hover {
    color: var(--color-primary);
    background: var(--color-bg-alt);
}

.btn-download-small {
    background: var(--color-primary);
    color: white !important;
    padding: var(--spacing-xs) var(--spacing-sm) !important;
}

/* Hero Section */
.hero {
    padding: calc(var(--spacing-xl) + 60px) 0 var(--spacing-xl);
    background: linear-gradient(135deg, #E8F5E9 0%, #FFFFFF 100%);
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    align-items: center;
}

.hero-title {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: var(--spacing-sm);
    color: var(--color-primary-dark);
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-md);
    max-width: 500px;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    flex-wrap: wrap;
}

.hero-note {
    font-size: 0.875rem;
    color: var(--color-text-light);
}

/* Phone Mockup */
.phone-mockup {
    width: 280px;
    height: 560px;
    background: #1C1B1F;
    border-radius: 40px;
    padding: 12px;
    margin: 0 auto;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
}

.phone-screen {
    background: white;
    border-radius: 32px;
    height: 100%;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.screen-header {
    background: var(--color-primary);
    color: white;
    padding: var(--spacing-sm);
    text-align: center;
    font-weight: 600;
}

.screen-content {
    flex: 1;
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
}

.screen-stat {
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-primary);
}

.screen-label {
    color: var(--color-text-light);
    font-size: 0.875rem;
}

.screen-list {
    width: 100%;
    margin-top: var(--spacing-sm);
}

.screen-item {
    height: 40px;
    background: var(--color-bg-alt);
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing-xs);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-full);
    font-weight: 600;
    transition: var(--transition);
    cursor: pointer;
    border: none;
    font-size: 1rem;
}

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

.btn-primary:hover {
    background: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(46, 125, 50, 0.3);
}

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

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

.btn-premium {
    background: linear-gradient(135deg, var(--color-accent) 0%, #FF9800 100%);
    color: var(--color-text);
    margin-top: var(--spacing-sm);
}

.btn-premium:hover {
    transform: scale(1.05);
    box-shadow: 0 10px 30px rgba(255, 193, 7, 0.4);
}

.btn-download {
    background: var(--color-primary);
    color: white;
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: 1.125rem;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    text-align: center;
}

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

.btn-icon {
    font-size: 1.5rem;
}

/* Sections */
section {
    padding: var(--spacing-xl) 0;
}

.section-title {
    font-size: 2rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-xs);
    color: var(--color-primary-dark);
}

.section-subtitle {
    text-align: center;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-lg);
}

/* Features Section */
.features {
    background: var(--color-bg-alt);
}

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

.feature-card {
    background: white;
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.1);
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
}

.feature-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

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

/* How Section */
.steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

.step {
    text-align: center;
}

.step-number {
    width: 60px;
    height: 60px;
    background: var(--color-primary);
    color: white;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 auto var(--spacing-sm);
}

.step-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

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

/* Premium Section */
.premium {
    background: linear-gradient(135deg, #FFF8E1 0%, #FFFFFF 100%);
    border-top: 1px solid var(--color-accent);
    border-bottom: 1px solid var(--color-accent);
}

.premium-content {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.premium-title {
    font-size: 2rem;
    margin-bottom: var(--spacing-xs);
}

.premium-text {
    color: var(--color-text-light);
    margin-bottom: var(--spacing-md);
}

.premium-features {
    list-style: none;
    margin: var(--spacing-md) 0;
    display: inline-block;
    text-align: left;
}

.premium-feature {
    padding: var(--spacing-xs) 0;
    font-size: 1.125rem;
}

/* Download Section */
.download {
    background: var(--color-bg-alt);
}

.download-card {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-md);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    flex-wrap: wrap;
}

.download-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.download-meta {
    color: var(--color-text-light);
    margin-bottom: var(--spacing-sm);
}

.download-features {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-xs);
}

.download-note {
    text-align: center;
    font-size: 0.875rem;
    color: var(--color-text-light);
    margin-top: var(--spacing-sm);
}

.install-help {
    max-width: 600px;
    margin: var(--spacing-md) auto 0;
}

.install-help details {
    background: white;
    border-radius: var(--radius-sm);
    padding: var(--spacing-sm);
    cursor: pointer;
}

.install-help summary {
    font-weight: 600;
    color: var(--color-primary);
}

.install-steps {
    margin-top: var(--spacing-sm);
    padding-left: var(--spacing-md);
}

.install-steps li {
    margin-bottom: var(--spacing-xs);
    color: var(--color-text-light);
}

/* Footer */
.footer {
    background: var(--color-text);
    color: white;
    padding: var(--spacing-lg) 0 var(--spacing-md);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
}

.footer-title {
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.footer-text {
    color: rgba(255, 255, 255, 0.7);
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: var(--spacing-xs);
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
}

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

/* Responsive */
@media (max-width: 768px) {
    .nav {
        gap: var(--spacing-xs);
    }

    .nav-link:not(.btn-download-small) {
        display: none;
    }

    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-buttons {
        justify-content: center;
    }

    .phone-mockup {
        width: 220px;
        height: 440px;
    }

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

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

    .download-card {
        flex-direction: column;
        text-align: center;
    }

    .download-features {
        text-align: left;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 1.75rem;
    }

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

    .section-title {
        font-size: 1.5rem;
    }

    .btn-download {
        width: 100%;
    }
}