/* ========================================
   VARIABLES Y RESET
   ======================================== */
:root {
    /* Colores principales */
    --primary-blue: #2196F3;
    --primary-dark: #1976D2;
    --premium-gold: #FFD700;
    --warning-orange: #FF9800;
    --error-red: #F44336;
    --success-green: #4CAF50;
    
    /* Colores neutros */
    --white: #FFFFFF;
    --gray-50: #F9FAFB;
    --gray-100: #F3F4F6;
    --gray-200: #E5E7EB;
    --gray-300: #D1D5DB;
    --gray-600: #4B5563;
    --gray-800: #1F2937;
    --gray-900: #111827;
    
    /* Sombras */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --shadow-3d: 0 6px 0 rgba(0, 0, 0, 0.15);
    
    /* Tipografía */
    --font-family: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    color: var(--gray-800);
    line-height: 1.6;
    overflow-x: hidden;
}

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

/* ========================================
   HEADER & NAVIGATION
   ======================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--white);
    box-shadow: var(--shadow-md);
    z-index: 1000;
}

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

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

.logo-icon {
    font-size: 2rem;
}

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

.nav-menu a {
    color: var(--gray-600);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

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

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
}

.menu-toggle span {
    display: block;
    width: 25px;
    height: 3px;
    background: var(--gray-800);
    transition: 0.3s;
}

/* ========================================
   HERO SECTION
   ======================================== */
.hero {
    padding: 120px 0 80px;
    background: linear-gradient(135deg, #E3F2FD 0%, #BBDEFB 100%);
}

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

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 1rem;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--gray-600);
    margin-bottom: 2rem;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    margin-bottom: 3rem;
}

.hero-stats {
    display: flex;
    gap: 2rem;
}

.stat {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-blue);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--gray-600);
}

/* Phone Mockup */
.phone-mockup {
    position: relative;
    width: 300px;
    height: 600px;
    background: var(--gray-900);
    border-radius: 40px;
    padding: 15px;
    box-shadow: var(--shadow-lg);
    margin: 0 auto;
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: var(--white);
    border-radius: 30px;
    overflow: hidden;
}

.screen-content {
    padding: 20px;
}

.app-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.badge-premium {
    background: linear-gradient(135deg, var(--premium-gold), #FFA000);
    color: var(--gray-900);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
}

.app-header h3 {
    font-size: 1.25rem;
    color: var(--gray-800);
}

.app-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 20px;
}

.list-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px;
    background: var(--gray-50);
    border-radius: 12px;
}

.list-item input[type="checkbox"] {
    width: 20px;
    height: 20px;
    accent-color: var(--primary-blue);
}

.app-members {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.member-badge {
    background: var(--primary-blue);
    color: var(--white);
    padding: 4px 10px;
    border-radius: 15px;
    font-size: 0.75rem;
}

/* ========================================
   BUTTONS
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: 12px;
    transition: all 0.3s;
    cursor: pointer;
    border: none;
}

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

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

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

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

.btn-3d {
    box-shadow: var(--shadow-3d);
    transform: translateY(0);
}

.btn-3d:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 0 rgba(0, 0, 0, 0.15);
}

.btn-3d:active {
    transform: translateY(2px);
    box-shadow: 0 2px 0 rgba(0, 0, 0, 0.15);
}

.btn-icon {
    font-size: 1.25rem;
}

/* ========================================
   FEATURES SECTION
   ======================================== */
.features {
    padding: 80px 0;
    background: var(--white);
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 1rem;
    color: var(--gray-900);
}

.section-subtitle {
    font-size: 1.125rem;
    text-align: center;
    color: var(--gray-600);
    margin-bottom: 3rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.feature-card {
    padding: 2rem;
    background: var(--gray-50);
    border-radius: 16px;
    text-align: center;
    transition: transform 0.3s, box-shadow 0.3s;
}

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

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

.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    color: var(--gray-900);
}

.feature-card p {
    color: var(--gray-600);
}

/* ========================================
   PRICING SECTION
   ======================================== */
.pricing {
    padding: 80px 0;
    background: var(--gray-50);
}

.pricing-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-bottom: 2rem;
}

.pricing-card {
    background: var(--white);
    border-radius: 16px;
    padding: 2rem;
    box-shadow: var(--shadow-md);
    position: relative;
    transition: transform 0.3s;
}

.pricing-card:hover {
    transform: translateY(-5px);
}

.pricing-card-featured {
    border: 3px solid var(--premium-gold);
    transform: scale(1.05);
}

.pricing-card-featured:hover {
    transform: scale(1.08) translateY(-5px);
}

.popular-badge {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, var(--premium-gold), #FFA000);
    color: var(--gray-900);
    padding: 8px 20px;
    border-radius: 20px;
    font-weight: 600;
    font-size: 0.875rem;
}

.pricing-header {
    text-align: center;
    padding-bottom: 2rem;
    border-bottom: 2px solid var(--gray-200);
    margin-bottom: 2rem;
}

.pricing-header h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--gray-900);
}

.price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 0.25rem;
}

.price-currency {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--gray-600);
}

.price-amount {
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary-blue);
}

.price-period {
    font-size: 1.125rem;
    color: var(--gray-600);
}

.price-description {
    margin-top: 0.5rem;
    color: var(--gray-600);
}

.pricing-features {
    list-style: none;
    margin-bottom: 2rem;
}

.pricing-features li {
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--gray-200);
}

.feature-included {
    color: var(--gray-800);
}

.feature-excluded {
    color: var(--gray-400);
}

.feature-info {
    color: var(--primary-blue);
    font-weight: 500;
}

.pricing-note {
    background: var(--primary-blue);
    color: var(--white);
    padding: 1.5rem;
    border-radius: 12px;
    text-align: center;
    font-size: 1.125rem;
}

/* ========================================
   FAQ SECTION
   ======================================== */
.faq {
    padding: 80px 0;
    background: var(--white);
}

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

.faq-item {
    margin-bottom: 1rem;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.faq-question {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    background: var(--white);
    border: 2px solid var(--gray-200);
    cursor: pointer;
    font-size: 1.125rem;
    font-weight: 600;
    text-align: left;
    transition: all 0.3s;
}

.faq-question:hover {
    background: var(--gray-50);
    border-color: var(--primary-blue);
}

.faq-icon {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-blue);
    transition: transform 0.3s;
}

.faq-item.active .faq-icon {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
    background: var(--gray-50);
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer p {
    padding: 1.5rem;
    color: var(--gray-600);
    line-height: 1.8;
}

/* ========================================
   FOOTER
   ======================================== */
.footer {
    background: var(--gray-900);
    color: var(--white);
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.footer-description {
    color: var(--gray-300);
    margin-bottom: 1rem;
}

.footer-section h4 {
    margin-bottom: 1rem;
    color: var(--white);
}

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

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

.footer-section a {
    color: var(--gray-300);
    text-decoration: none;
    transition: color 0.3s;
}

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

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--gray-600);
    color: var(--gray-400);
}

.footer-dev {
    margin-top: 0.5rem;
    font-size: 0.875rem;
}

/* ========================================
   RESPONSIVE DESIGN
   ======================================== */
@media (max-width: 968px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        flex-direction: column;
        background: var(--white);
        width: 100%;
        padding: 2rem;
        box-shadow: var(--shadow-lg);
        transition: left 0.3s;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .menu-toggle {
        display: flex;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .hero-stats {
        justify-content: center;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .pricing-cards {
        grid-template-columns: 1fr;
    }
    
    .pricing-card-featured {
        transform: scale(1);
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}

@media (max-width: 640px) {
    .hero-title {
        font-size: 1.75rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .phone-mockup {
        width: 250px;
        height: 500px;
    }
    
    .section-title {
        font-size: 2rem;
    }
}