:root {
    --primary-color: #2c3e50;
    --secondary-color: #e74c3c;
    --accent-color: #3498db;
    --gradient-primary: linear-gradient(135deg, #2c3e50 0%, #3498db 100%);
    --gradient-secondary: linear-gradient(135deg, #e74c3c 0%, #f39c12 100%);
    --text-color: #333;
    --light-bg: #f8f9fa;
    --dark-bg: #2c3e50;
    --white: #ffffff;
    --font-primary: 'Montserrat', sans-serif;
    --font-secondary: 'Open Sans', sans-serif;
}

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

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

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

/* Header Styles */
.header {
    background: var(--gradient-primary);
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    transition: all 0.3s ease;
}

.header.scrolled {
    background: rgba(44, 62, 80, 0.95);
    backdrop-filter: blur(10px);
}

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

.logo {
    font-size: 3.8rem;
    font-weight: 700;
    color: var(--white);
    text-decoration: none;
    font-family: 'Dancing Script', cursive;
    font-style: italic;
    letter-spacing: 2px;
    text-transform: none;
    line-height: 1;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.2);
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    padding: 10px 0;
}

.logo:hover {
    transform: scale(1.05);
    text-shadow: 3px 3px 6px rgba(0,0,0,0.3);
}

.logo-img {
    height: 80px;
    width: auto;
    display: block;
    transition: all 0.3s ease;
}

.logo:hover .logo-img {
    transform: scale(1.05);
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-links a {
    color: var(--white);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
    padding: 0.5rem 0;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--white);
    transition: width 0.3s ease;
}

.nav-links a:hover::after {
    width: 100%;
}

/* Hero Section */
.hero {
    height: 100vh;
    background: linear-gradient(rgba(0,0,0,0.7), rgba(0,0,0,0.7)), url('https://images.unsplash.com/photo-1478737270239-2f02b77fc618?ixlib=rb-4.0.3&auto=format&fit=crop&w=1950&q=80');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    display: flex;
    align-items: center;
    text-align: left;
    color: var(--white);
    margin-top: 80px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, rgba(44, 62, 80, 0.8), rgba(52, 152, 219, 0.8));
    opacity: 0.8;
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    margin: 0 auto;
    padding: 0 20px;
}

.hero-subtitle {
    font-size: 1.2rem;
    text-transform: uppercase;
    letter-spacing: 3px;
    margin-bottom: 1rem;
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.6s ease forwards 0.2s;
}

.hero h1 {
    font-size: 4.5rem;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    font-weight: 700;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.6s ease forwards 0.4s;
}

.hero-description {
    font-size: 1.4rem;
    margin-bottom: 2.5rem;
    max-width: 600px;
    line-height: 1.6;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.3);
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.6s ease forwards 0.6s;
}

.cta-buttons {
    display: flex;
    gap: 1.5rem;
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.6s ease forwards 0.8s;
}

.btn-primary {
    padding: 1rem 2.5rem;
    font-size: 1.1rem;
    font-weight: 600;
    text-decoration: none;
    color: var(--white);
    background: var(--secondary-color);
    border-radius: 50px;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 1px;
    box-shadow: 0 4px 15px rgba(231, 76, 60, 0.4);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(231, 76, 60, 0.6);
}

.btn-secondary {
    padding: 1rem 2.5rem;
    font-size: 1.1rem;
    font-weight: 600;
    text-decoration: none;
    color: var(--white);
    background: transparent;
    border: 2px solid var(--white);
    border-radius: 50px;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.btn-secondary:hover {
    background: var(--white);
    color: var(--primary-color);
    transform: translateY(-3px);
}

/* Scroll Animations */
.fade-in {
    opacity: 0;
    transform: translateY(50px);
    transition: all 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Section Animations */
.section-header {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.section-header.visible {
    opacity: 1;
    transform: translateY(0);
}

.section-content {
    opacity: 0;
    transform: translateY(50px);
    transition: all 0.6s ease;
}

.section-content.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Card Animations */
.card-animation {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.4s ease;
}

.card-animation.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Service Section */
.service-section {
    padding: 100px 0;
    background: var(--light-bg);
}

.service-section h2 {
    text-align: center;
    margin-bottom: 3rem;
    color: var(--primary-color);
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 1s ease forwards;
}

.service-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.service-card {
    background: var(--white);
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
    opacity: 0;
    transform: translateY(50px);
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0,0,0,0.2);
}

.service-card h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

/* Voice Section */
.voice-section {
    padding: 100px 0;
    background: var(--white);
}

.voice-categories {
    display: flex;
    gap: 1rem;
    margin: 2rem 0;
    flex-wrap: wrap;
    justify-content: center;
}

.category-btn {
    padding: 0.8rem 1.5rem;
    border: none;
    background: var(--gradient-primary);
    color: var(--white);
    border-radius: 30px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
}

.category-btn.active,
.category-btn:hover {
    background: var(--gradient-secondary);
    transform: translateY(-2px);
}

.voice-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.voice-card {
    background: var(--white);
    padding: 1.5rem;
    border-radius: 15px;
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
    opacity: 0;
    transform: translateY(50px);
}

.voice-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0,0,0,0.2);
}

/* Contact Section */
.contact-section {
    padding: 100px 0;
    background: var(--gradient-primary);
    color: var(--white);
}

.contact-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

.contact-info h2 {
    margin-bottom: 2rem;
    font-size: 2.5rem;
}

.contact-form {
    background: var(--white);
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    border: 2px solid #eee;
    border-radius: 8px;
    transition: all 0.3s ease;
    color: var(--text-color);
}

.form-group label {
    color: var(--text-color);
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--accent-color);
    outline: none;
}

.form-group select {
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%232c3e50' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    background-size: 1.2em;
    padding-right: 2.5rem;
    cursor: pointer;
    font-size: 1rem;
    background-color: #f8f9fa;
    border: 2px solid #e9ecef;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.form-group select:hover {
    border-color: var(--accent-color);
    background-color: #ffffff;
}

.form-group select:focus {
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
    outline: none;
    background-color: #ffffff;
}

.form-group select option {
    padding: 1rem;
    font-size: 1rem;
    background-color: #ffffff;
    color: var(--text-color);
}

.form-group label.required::after {
    content: '*';
    color: var(--secondary-color);
    margin-left: 4px;
}

.form-group input:invalid,
.form-group input:focus:invalid {
    border-color: #e9ecef;
    background-color: #ffffff;
}

.form-group input.touched:invalid,
.form-group input.touched:focus:invalid {
    border-color: var(--secondary-color);
    background-color: rgba(231, 76, 60, 0.05);
}

.form-group input.touched:valid {
    border-color: #2ecc71;
}

.error-message {
    color: var(--secondary-color);
    font-size: 0.875rem;
    margin-top: 0.5rem;
    display: none;
}

.form-group input.touched:invalid + .error-message,
.form-submitted .form-group input:invalid + .error-message {
    display: block;
}

/* Mensajes del formulario */
.form-message {
    margin-top: 1rem;
    padding: 10px 15px;
    border-radius: 5px;
    font-weight: 500;
    font-size: 0.9rem;
    animation: fadeIn 0.3s ease;
    width: 100%;
    box-sizing: border-box;
}

.form-message.success {
    background-color: rgba(46, 204, 113, 0.2);
    color: #27ae60;
    border: 1px solid #27ae60;
}

.form-message.error {
    background-color: rgba(231, 76, 60, 0.2);
    color: #e74c3c;
    border: 1px solid #e74c3c;
}

/* Estilos para botón deshabilitado durante el envío */
.btn-primary:disabled,
.btn-secondary:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Menú Móvil */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    position: relative;
    z-index: 1000;
}

.hamburger {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--white);
    position: relative;
    transition: all 0.3s ease;
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    width: 24px;
    height: 2px;
    background: var(--white);
    transition: all 0.3s ease;
}

.hamburger::before {
    top: -8px;
}

.hamburger::after {
    bottom: -8px;
}

.menu-toggle.active .hamburger {
    background: transparent;
}

.menu-toggle.active .hamburger::before {
    transform: rotate(45deg);
    top: 0;
}

.menu-toggle.active .hamburger::after {
    transform: rotate(-45deg);
    bottom: 0;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav {
        padding: 0.5rem 1rem;
    }

    .menu-toggle {
        display: block;
    }

    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 300px;
        height: 100vh;
        background: var(--primary-color);
        padding: 80px 20px 20px;
        flex-direction: column;
        gap: 1.5rem;
        transition: all 0.3s ease;
        z-index: 999;
    }

    .nav-links.active {
        right: 0;
        box-shadow: -5px 0 15px rgba(0,0,0,0.2);
    }

    .nav-links a {
        font-size: 1.2rem;
        text-align: left;
        padding: 0.8rem 0;
        width: 100%;
        border-bottom: 1px solid rgba(255,255,255,0.1);
    }

    .nav-links a:last-child {
        border-bottom: none;
    }

    .hero {
        padding: 0 20px;
        height: calc(100vh - 80px);
        margin-top: 80px;
        text-align: center;
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .hero-content {
        padding: 0;
        width: 100%;
    }

    .hero h1 {
        font-size: 2.5rem;
        margin-bottom: 1rem;
        line-height: 1.3;
    }

    .hero-description {
        font-size: 1.1rem;
        margin-bottom: 2rem;
        padding: 0 10px;
    }

    .cta-buttons {
        flex-direction: column;
        gap: 1rem;
        width: 100%;
        max-width: 300px;
        margin: 0 auto;
    }

    .btn-primary,
    .btn-secondary {
        width: 100%;
        text-align: center;
        padding: 1rem;
        font-size: 1rem;
    }

    .contact-container {
        grid-template-columns: 1fr;
    }

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

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

    .logo-img {
        height: 60px;
    }
}