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

:root {
    /* Paleta de colores fría profesional */
    --primary-dark: #1e3a5f;
    --primary-medium: #2c5282;
    --secondary-dark: #4a5568;
    --secondary-medium: #718096;
    --text-primary: #2d3748;
    --text-secondary: #4a5568;
    --text-light: #718096;
    --bg-primary: #ffffff;
    --bg-secondary: #f7fafc;
    --bg-alt: #edf2f7;
    --border-color: #e2e8f0;
    --accent-color: #3182ce;
    --status-error: #ba3e2b;
    --status-success: #38a169;
    
    /* Tipografía */
    --font-heading: 'Playfair Display', serif;
    --font-body: 'Inter', sans-serif;
    
    /* Espaciado */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2rem;
    --space-xl: 3rem;
    --space-xxl: 4rem;
    
    /* Contenedor */
    --container-max: 1200px;
    
    /* Transiciones */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Tipografía Base */
body {
    font-family: var(--font-body);
    font-weight: 400;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: var(--space-sm);
}

/* Contenedor */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

/* Header */
.header {
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    transition: var(--transition);
}

.nav-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.logo-img {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    object-fit: cover;
}

.logo-text {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--primary-dark);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--space-xl);
}

.nav-link {
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 400;
    font-size: 0.95rem;
    padding: var(--space-xs) 0;
    position: relative;
    transition: var(--transition);
}

.nav-link:hover {
    color: var(--primary-dark);
}

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

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

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-xs);
}

.menu-toggle span {
    width: 25px;
    height: 2px;
    background: var(--text-primary);
    transition: var(--transition);
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
    padding: 120px 0 var(--space-xxl) 0;
    margin-top: 80px;
    min-height: 80vh;
    display: flex;
    align-items: center;
}

.hero-content {
    max-width: 800px;
    text-align: center;
    margin: 0 auto;
}

.hero-title {
    font-size: 3.5rem;
    font-family: var(--font-heading);
    color: var(--primary-dark);
    margin-bottom: var(--space-md);
    animation: fadeInUp 1s ease-out;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--secondary-dark);
    margin-bottom: var(--space-lg);
    font-weight: 300;
    animation: fadeInUp 1s ease-out 0.2s both;
}

.hero-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: var(--space-xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    animation: fadeInUp 1s ease-out 0.4s both;
}

.cta-button {
    display: inline-block;
    background: var(--primary-dark);
    color: white;
    padding: var(--space-md) var(--space-xl);
    text-decoration: none;
    font-weight: 500;
    font-size: 1.1rem;
    border-radius: 0;
    transition: var(--transition);
    border: 2px solid var(--primary-dark);
    animation: fadeInUp 1s ease-out 0.6s both;
}

.cta-button:hover {
    background: transparent;
    color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(30, 58, 95, 0.15);
}

/* Secciones */
.section {
    padding: var(--space-xxl) 0;
}

.section-alt {
    background: var(--bg-secondary);
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-xxl);
}

.section-title {
    font-size: 2.5rem;
    color: var(--primary-dark);
    margin-bottom: var(--space-md);
}

.section-line {
    width: 60px;
    height: 3px;
    background: var(--accent-color);
    margin: 0 auto;
}

/* Sobre Mí */
.about-content {
    max-width: 1000px;
    margin: 0 auto;
}

.about-main {
    display: grid;
    grid-template-columns: 400px 1fr;
    gap: var(--space-xxl);
    align-items: center;
    margin-bottom: var(--space-xxl);
}

.about-image {
    position: relative;
}

.profile-photo {
    width: 100%;
    height: 300px;
    object-fit: cover;
    border-radius: 8px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
}

.profile-photo:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

.about-text {
    padding-left: var(--space-lg);
}

.about-paragraph {
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: var(--space-lg);
    color: var(--text-secondary);
    text-align: justify;
}

.credentials {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-xl);
    margin-top: var(--space-xxl);
}

.credential-item {
    text-align: center;
    padding: var(--space-lg);
    background: var(--bg-primary);
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
}

.credential-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.credential-item h4 {
    color: var(--primary-dark);
    font-size: 1.2rem;
    margin-bottom: var(--space-sm);
}

.credential-item p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: var(--space-xs);
}

/* Servicios */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-xl);
}

.service-card {
    background: var(--bg-primary);
    padding: var(--space-xl);
    text-align: center;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 35px rgba(0, 0, 0, 0.1);
    border-color: var(--accent-color);
}

.service-icon {
    font-size: 3rem;
    margin-bottom: var(--space-md);
    opacity: 0.8;
}

.service-title {
    font-size: 1.4rem;
    color: var(--primary-dark);
    margin-bottom: var(--space-md);
}

.service-description {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Contacto */
.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xxl);
    max-width: 1000px;
    margin: 0 auto;
}

.contact-info h3 {
    color: var(--primary-dark);
    font-size: 1.5rem;
    margin-bottom: var(--space-lg);
}

.contact-item {
    margin-bottom: var(--space-lg);
}

.contact-item strong {
    color: var(--primary-dark);
    display: block;
    margin-bottom: var(--space-xs);
    font-weight: 500;
}

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

/* Formulario */
.contact-form-container {
    background: var(--bg-secondary);
    padding: var(--space-xl);
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.contact-form h3 {
    color: var(--primary-dark);
    font-size: 1.5rem;
    margin-bottom: var(--space-lg);
    text-align: center;
}

.form-group {
    margin-bottom: var(--space-lg);
}

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

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: var(--space-md);
    border: 2px solid var(--border-color);
    border-radius: 4px;
    font-family: var(--font-body);
    font-size: 1rem;
    background: var(--bg-primary);
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(49, 130, 206, 0.1);
}

.submit-button {
    width: 100%;
    background: var(--primary-dark);
    color: white;
    padding: var(--space-md);
    border: none;
    border-radius: 4px;
    font-size: 1.1rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    margin-bottom: var(--space-md);
}

.submit-button:hover:not(:disabled) {
    background: var(--primary-medium);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(30, 58, 95, 0.2);
}

.submit-button:disabled {
    background: var(--text-light);
    cursor: not-allowed;
    transform: none;
}

.form-note {
    font-size: 0.9rem;
    color: var(--text-light);
    text-align: center;
    line-height: 1.5;
}

/* Estados de error y éxito */
.form-group input.error,
.form-group select.error,
.form-group textarea.error {
    border-color: var(--status-error);
    box-shadow: 0 0 0 3px rgba(186, 62, 43, 0.1);
}

.error-message {
    color: var(--status-error);
    font-size: 0.9rem;
    margin-top: 0.25rem;
    display: block;
    animation: fadeInError 0.3s ease;
}

.success-message {
    color: var(--status-success);
    font-size: 0.9rem;
    margin-top: 0.25rem;
    display: block;
}

/* Footer */
.footer {
    background: var(--primary-dark);
    color: white;
    padding: var(--space-xl) 0;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-lg);
}

.footer-info p {
    margin-bottom: var(--space-xs);
    opacity: 0.9;
}

.footer-links {
    display: flex;
    gap: var(--space-lg);
}

.footer-link {
    color: white;
    text-decoration: none;
    opacity: 0.8;
    transition: var(--transition);
}

.footer-link:hover {
    opacity: 1;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    animation: fadeIn 0.3s ease;
}

.modal-content {
    background-color: var(--bg-primary);
    margin: 15% auto;
    padding: var(--space-xl);
    border-radius: 8px;
    width: 90%;
    max-width: 500px;
    position: relative;
    animation: slideIn 0.3s ease;
}

.close {
    color: var(--text-light);
    float: right;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    line-height: 1;
}

.close:hover {
    color: var(--text-primary);
}

/* Loading Spinner */
.loading-spinner {
    display: none;
    position: fixed;
    z-index: 3000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    justify-content: center;
    align-items: center;
    flex-direction: column;
}

.loading-spinner.show {
    display: flex;
}

.spinner {
    border: 4px solid var(--border-color);
    border-top: 4px solid var(--accent-color);
    border-radius: 50%;
    width: 50px;
    height: 50px;
    animation: spin 1s linear infinite;
    margin-bottom: var(--space-md);
}

.loading-spinner p {
    color: white;
    font-size: 1.1rem;
}

/* Animaciones */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

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

@keyframes fadeInError {
    from {
        opacity: 0;
        transform: translateY(-5px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Responsive Design */
@media (max-width: 1024px) {
    .container {
        padding: 0 var(--space-md);
    }
    
    .nav-container {
        padding: 0 var(--space-md);
    }
    
    .hero-title {
        font-size: 2.8rem;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
    }
    
    .credentials {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
        gap: var(--space-lg);
    }

    .about-main {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
        text-align: center;
    }

    .about-text {
        padding-left: 0;
    }

    .profile-photo {
        max-width: 400px;
        margin: 0 auto;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--bg-primary);
        flex-direction: column;
        padding: var(--space-lg);
        border-bottom: 1px solid var(--border-color);
        gap: var(--space-md);
    }
    
    .nav-menu.active {
        display: flex;
    }
    
    .menu-toggle {
        display: flex;
    }
    
    .hero {
        padding: 100px 0 var(--space-xl) 0;
        min-height: 70vh;
    }
    
    .hero-title {
        font-size: 2.2rem;
    }
    
    .hero-subtitle {
        font-size: 1.2rem;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }
    
    .section {
        padding: var(--space-xl) 0;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
    }

    .about-main {
        gap: var(--space-lg);
    }

    .profile-photo {
        height: 250px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--space-sm);
    }
    
    .nav-container {
        padding: 0 var(--space-sm);
    }
    
    .hero-title {
        font-size: 1.8rem;
    }
    
    .hero-description {
        font-size: 1rem;
    }
    
    .contact-form-container {
        padding: var(--space-lg);
    }
    
    .credentials {
        grid-template-columns: 1fr;
    }
    
    .modal-content {
        margin: 25% auto;
        padding: var(--space-lg);
    }

    .profile-photo {
        height: 200px;
    }
}