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

:root {
    --primary-color: #667eea;
    --secondary-color: #764ba2;
    --text-dark: #1f2937;
    --text-light: #6b7280;
    --bg-light: #f9fafb;
    --white: #ffffff;
    --border-color: #e5e7eb;
    --shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.15);
}

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

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

/* Fondo de estrellas */
.stars-background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: -1;
    background: radial-gradient(2px 2px at 20px 30px, #f5f5f5, rgba(255, 255, 255, 0)),
                radial-gradient(2px 2px at 60px 70px, #fff, rgba(255, 255, 255, 0)),
                radial-gradient(1px 1px at 50px 50px, #fff, rgba(255, 255, 255, 0)),
                radial-gradient(1px 1px at 130px 80px, #fff, rgba(255, 255, 255, 0)),
                radial-gradient(2px 2px at 90px 10px, #fff, rgba(255, 255, 255, 0));
    background-repeat: repeat;
    background-size: 200px 200px;
    background-color: #f9fafb;
}

/* Navegación */
.navbar {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

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

.navbar-brand {
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: flex;
    align-items: center;
    gap: 1rem;
}

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

.nav-menu a {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    transition: color 0.3s ease;
    font-size: 0.95rem;
}

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

/* Language Switcher */
.language-switcher {
    display: flex;
    gap: 0.5rem;
    border-left: 1px solid var(--border-color);
    padding-left: 1rem;
}

.lang-btn {
    background: transparent;
    border: 2px solid var(--border-color);
    padding: 0.4rem 0.8rem;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 700;
    font-size: 0.8rem;
    letter-spacing: 0.5px;
    color: var(--text-dark);
    transition: all 0.3s ease;
    text-transform: uppercase;
    min-width: 45px;
    text-align: center;
}

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

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

/* Hero Section */
.hero {
    padding: 4rem 0;
    position: relative;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    align-items: center;
}

.hero-content {
    z-index: 1;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

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

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 1rem;
}

.hero-description {
    font-size: 1.1rem;
    color: var(--text-light);
    margin-bottom: 2rem;
    line-height: 1.8;
}

.cta-button {
    display: inline-block;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 1rem 2rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    box-shadow: var(--shadow);
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

/* Device Frame */
.hero-illustration {
    display: flex;
    justify-content: center;
    align-items: center;
}

.device-frame {
    width: 280px;
    height: 560px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 40px;
    padding: 12px;
    box-shadow: var(--shadow-lg);
    position: relative;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.device-frame::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 130px;
    height: 25px;
    background: #000;
    border-radius: 0 0 20px 20px;
    z-index: 10;
}

.device-screen {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    border-radius: 35px;
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

/* Apps Section */
.apps-section {
    padding: 4rem 0;
    background-color: var(--bg-light);
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

.section-subtitle {
    text-align: center;
    color: var(--text-light);
    font-size: 1.1rem;
    margin-bottom: 3rem;
}

.apps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.app-card {
    background: var(--white);
    border-radius: 20px;
    padding: 2rem;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid var(--border-color);
}

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

.app-icon {
    width: 60px;
    height: 60px;
    border-radius: 15px;
    margin-bottom: 1.5rem;
}

.app-name {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

.app-description {
    color: var(--text-light);
    margin-bottom: 1rem;
    line-height: 1.6;
}

.app-tags {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.tag {
    display: inline-block;
    background: rgba(102, 126, 234, 0.1);
    color: var(--primary-color);
    padding: 0.4rem 0.8rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
}

.app-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    transition: opacity 0.3s ease;
}

.app-link:hover {
    opacity: 0.9;
}

/* Contact Section */
/* Sections Wrapper */
.sections-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
}

.contact-section {
    padding: 4rem 0;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%);
}

.contact-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    margin-top: 2rem;
}

.email-link {
    display: inline-flex;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem 2.5rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    text-decoration: none;
    border-radius: 12px;
    font-weight: 600;
    font-size: 1.2rem;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    box-shadow: var(--shadow);
}

.email-link:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

.email-text {
    letter-spacing: 0.3px;
}

.contact-hint {
    color: var(--text-light);
    font-size: 0.95rem;
}

/* Contact Form Styling */
.contact-form {
    display: none;
}

.form-status {
    display: none;
}

/* Form Group */

/* Coffee Section */
.coffee-section {
    padding: 4rem 0;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%);
}

.coffee-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
    margin-top: 3rem;
}

.coffee-qr {
    display: flex;
    justify-content: center;
    align-items: center;
}

.qr-image {
    max-width: 250px;
    width: 100%;
    height: auto;
    border-radius: 16px;
    box-shadow: var(--shadow-lg);
    transition: transform 0.3s ease;
}

.qr-image:hover {
    transform: scale(1.05);
}

.coffee-info {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.coffee-text {
    font-size: 1.1rem;
    color: var(--text-dark);
    font-weight: 500;
}

.coffee-link {
    display: inline-block;
    padding: 1rem 2rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    text-decoration: none;
    border-radius: 12px;
    font-weight: 600;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    box-shadow: var(--shadow);
    width: fit-content;
}

.coffee-link:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* Footer */
.footer {
    background-color: var(--text-dark);
    color: white;
    padding: 2rem 0;
    text-align: center;
}

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

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

/* Responsive */
@media (max-width: 768px) {
    .navbar .container {
        flex-direction: column;
        gap: 0.8rem;
    }

    .navbar-brand {
        font-size: 1rem;
        gap: 0.5rem;
    }

    .nav-menu {
        gap: 0.8rem;
        justify-content: center;
        width: 100%;
        font-size: 0.85rem;
    }

    .language-switcher {
        border-left: none;
        padding-left: 0;
        gap: 0.3rem;
    }

    .lang-btn {
        padding: 0.3rem 0.6rem;
        font-size: 0.7rem;
        min-width: 38px;
    }

    .hero {
        padding: 2rem 0;
    }

    .hero .container {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .hero-content {
        text-align: center;
    }

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

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

    .hero-description {
        font-size: 0.95rem;
        margin-bottom: 1.5rem;
    }

    .cta-button {
        display: inline-block;
    }

    .device-frame {
        width: 150px;
        height: 300px;
    }

    .device-frame::before {
        width: 70px;
        height: 13px;
        border-radius: 0 0 10px 10px;
    }

    .apps-section {
        padding: 2rem 0;
    }

    .section-title {
        font-size: 1.8rem;
    }

    .section-subtitle {
        font-size: 0.95rem;
    }

    .apps-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .sections-wrapper {
        grid-template-columns: 1fr;
    }

    .contact-section,
    .coffee-section {
        padding: 2rem 0;
    }

    .contact-content {
        gap: 0.8rem;
    }

    .coffee-content {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        margin-top: 1.5rem;
    }

    .qr-image {
        max-width: 180px;
    }

    .email-link {
        padding: 1rem 1.5rem;
        font-size: 1rem;
        flex-direction: row;
        gap: 0.5rem;
        white-space: nowrap;
    }

    .email-icon {
        font-size: 1.2rem;
        flex-shrink: 0;
    }

    .coffee-link {
        padding: 0.8rem 1.5rem;
        font-size: 0.95rem;
        width: 100%;
        text-align: center;
    }

    .contact-content,
    .coffee-info {
        align-items: center;
        text-align: center;
    }

    .contact-hint {
        font-size: 0.9rem;
    }
}