/* Variables CSS */
:root {
    --bg-primary: #0a0a0a;
    --bg-secondary: #1a1a1a;
    --bg-card: #1f1f1f;
    --text-primary: #ffffff;
    --text-secondary: #b0b0b0;
    --accent-primary: #4dd0e1;
    --accent-secondary: #26a69a;
    --accent-teal: #00bcd4;
    --border-color: #2a2a2a;
    --success: #4caf50;
    --error: #f44336;
    --container-width: 1200px;
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    --border-radius: 12px;
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

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

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Header */
.header {
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) var(--spacing-md);
    position: relative;
    gap: var(--spacing-sm);
}

.logo {
    display: flex;
    align-items: center;
}

.logo h1 {
    font-size: 1.5rem;
    color: var(--accent-primary);
    font-weight: 700;
    margin: 0;
}

/* Botón hamburguesa - visible solo en móvil */
.menu-toggle {
    display: flex;
    flex-direction: column;
    justify-content: space-around;
    width: 28px;
    height: 24px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 1001;
    position: relative;
    flex-shrink: 0;
    margin-right: var(--spacing-xs);
}

.menu-toggle span {
    width: 100%;
    height: 3px;
    background-color: var(--text-primary);
    border-radius: 3px;
    transition: var(--transition);
    transform-origin: center;
}

.menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
}

.menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(8px, -8px);
}

/* Menú de navegación - mobile-first: oculto por defecto */
.nav-menu {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background-color: var(--bg-secondary);
    list-style: none;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    align-items: flex-start;
    padding: 80px var(--spacing-md) var(--spacing-md);
    gap: var(--spacing-md);
    transform: translateX(-100%);
    transition: transform 0.3s ease;
    z-index: 1000;
    border-right: 1px solid var(--border-color);
}

.nav-menu.active {
    transform: translateX(0);
}

.nav-menu li {
    width: 100%;
}

.nav-menu a {
    color: var(--text-primary);
    text-decoration: none;
    transition: var(--transition);
    font-weight: 500;
    font-size: 1.25rem;
    display: block;
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--border-color);
}

.nav-menu a:hover {
    color: var(--accent-primary);
    padding-left: var(--spacing-sm);
}

/* Language Selector */
.lang-selector {
    display: flex;
    gap: var(--spacing-xs);
    align-items: center;
    margin-left: auto;
}

.lang-btn {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 0.5rem 0.75rem;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 500;
    transition: var(--transition);
    font-family: inherit;
}

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

.lang-btn.active {
    background-color: var(--accent-primary);
    color: var(--bg-primary);
    border-color: var(--accent-primary);
}

/* Hero Section */
.hero {
    padding: var(--spacing-xl) 0;
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
}

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

.hero-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    line-height: 1.2;
    background: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

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

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-image img {
    max-width: 100%;
    height: auto;
    border-radius: var(--border-radius);
    box-shadow: 0 20px 60px rgba(77, 208, 225, 0.2);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-secondary) 100%);
    color: var(--bg-primary);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(77, 208, 225, 0.4);
}

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

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

/* Section Titles */
.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: var(--spacing-lg);
    font-weight: 700;
}

.section-subtitle {
    text-align: center;
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: var(--spacing-md);
}

/* Features Section */
.features {
    padding: var(--spacing-xl) 0;
    background-color: var(--bg-secondary);
}

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

.feature-card {
    background-color: var(--bg-card);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.feature-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent-primary);
    box-shadow: 0 10px 30px rgba(77, 208, 225, 0.1);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-xs);
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-xs);
    color: var(--accent-primary);
}

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

.feature-image {
    width: 100%;
    max-width: 300px;
    height: auto;
    border-radius: 8px;
    margin-top: var(--spacing-sm);
    border: 1px solid var(--border-color);
}

/* Pricing Section */
.pricing {
    padding: var(--spacing-xl) 0;
    background-color: var(--bg-primary);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
    max-width: 900px;
    margin: 0 auto;
}

.pricing-card {
    background-color: var(--bg-card);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    position: relative;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.pricing-card.featured {
    border-color: var(--accent-primary);
    box-shadow: 0 10px 40px rgba(77, 208, 225, 0.2);
}

.badge {
    position: absolute;
    top: -15px;
    right: var(--spacing-md);
    background: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-secondary) 100%);
    color: var(--bg-primary);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 600;
}

.pricing-card h3 {
    font-size: 1.75rem;
    margin-top: var(--spacing-sm);
    color: var(--accent-primary);
}

.price {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.price span {
    font-size: 1rem;
    color: var(--text-secondary);
}

.pricing-lifetime-price {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.pricing-features {
    list-style: none;
    margin: var(--spacing-md) 0;
    flex-grow: 1;
}

.pricing-features li {
    padding: var(--spacing-xs) 0;
    color: var(--text-secondary);
}

/* Contact Section */
.contact {
    padding: var(--spacing-xl) 0;
    background-color: var(--bg-secondary);
}

.contact-wrapper {
    max-width: 600px;
    margin: 0 auto;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.form-group label {
    color: var(--text-primary);
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 0.75rem;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(77, 208, 225, 0.1);
}

.form-message {
    padding: var(--spacing-sm);
    border-radius: 8px;
    text-align: center;
    font-weight: 500;
    display: none;
}

.form-message.success {
    background-color: rgba(76, 175, 80, 0.2);
    color: var(--success);
    border: 1px solid var(--success);
    display: block;
}

.form-message.error {
    background-color: rgba(244, 67, 54, 0.2);
    color: var(--error);
    border: 1px solid var(--error);
    display: block;
}

/* Footer */
.footer {
    background-color: var(--bg-primary);
    border-top: 1px solid var(--border-color);
    padding: var(--spacing-md) 0;
    text-align: center;
    color: var(--text-secondary);
}

.footer a {
    color: var(--accent-primary);
    text-decoration: none;
}

.footer a:hover {
    text-decoration: underline;
}

/* Responsive - Desktop */
@media (min-width: 769px) {
    /* Ocultar botón hamburguesa en desktop */
    .menu-toggle {
        display: none;
    }

    .nav {
        gap: var(--spacing-md);
    }

    /* Mostrar menú siempre visible en desktop */
    .nav-menu {
        position: static;
        width: auto;
        height: auto;
        background-color: transparent;
        flex-direction: row;
        justify-content: flex-start;
        align-items: center;
        padding: 0;
        gap: var(--spacing-md);
        transform: translateX(0);
        border-right: none;
    }

    .nav-menu li {
        width: auto;
    }

    .nav-menu a {
        font-size: 1rem;
        padding: 0;
        border-bottom: none;
    }

    .nav-menu a:hover {
        padding-left: 0;
    }

    .lang-selector {
        margin-left: var(--spacing-md);
        margin-right: 0;
    }
}

/* Responsive - Mobile */
@media (max-width: 768px) {
    .hero .container {
        grid-template-columns: 1fr;
    }

    .hero-title {
        font-size: 2rem;
    }

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

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

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

    .section-title {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-sm);
    }

    .hero {
        padding: var(--spacing-md) 0;
    }

    .hero-title {
        font-size: 1.75rem;
    }

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