/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #25D366;
    --primary-dark: #128C7E;
    --secondary-color: #075E54;
    --accent-color: #FF6B35;
    --text-dark: #1a1a1a;
    --text-light: #666;
    --bg-light: #f8f9fa;
    --bg-white: #ffffff;
    --shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.15);
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background: linear-gradient(180deg, #f8f9fa 0%, #ffffff 100%);
    background-attachment: fixed;
    overflow-x: hidden;
}

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

/* Header and Navigation */
.header {
    background: var(--bg-white);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar {
    padding: 1rem 0;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: var(--text-dark);
}

.logo-dc {
    display: flex;
    align-items: center;
    gap: 2px;
}

.dc-letter {
    font-size: 2rem;
    font-weight: 900;
    color: var(--primary-color);
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -2px;
}

.logo-text {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-dark);
}

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

.nav-menu a {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: var(--transition);
}

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

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.menu-toggle span {
    width: 25px;
    height: 3px;
    background: var(--text-dark);
    transition: var(--transition);
}

/* Hero Section */
.hero {
    min-height: 90vh;
    display: flex;
    align-items: center;
    padding: 4rem 0;
    position: relative;
    overflow: hidden;
}

.hero::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: url('fondito.jpg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    background-attachment: fixed;
    z-index: 0;
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
    transform: translateZ(0) scale(1);
    -webkit-transform: translateZ(0) scale(1);
    image-rendering: -webkit-optimize-contrast;
    image-rendering: optimize-contrast;
    -ms-interpolation-mode: bicubic;
    will-change: transform;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(0, 0, 0, 0.4) 0%, rgba(0, 0, 0, 0.2) 100%);
    z-index: 1;
}

.hero-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    text-align: center;
    position: relative;
    z-index: 2;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    color: white;
    line-height: 1.2;
    text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.5);
}

.hero-subtitle {
    font-size: 1.3rem;
    color: rgba(255, 255, 255, 0.95);
    margin-bottom: 2.5rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    text-shadow: 1px 1px 4px rgba(0, 0, 0, 0.5);
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    padding: 1rem 2.5rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    display: inline-block;
    border: 2px solid transparent;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: transparent;
    color: var(--primary-color);
    border-color: var(--primary-color);
}

.btn-secondary:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
}

.hero-image {
    display: none;
}

/* Services Section */
.services {
    padding: 5rem 0;
    background: var(--bg-white);
}

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

.section-subtitle {
    text-align: center;
    color: var(--text-light);
    font-size: 1.1rem;
    margin-bottom: 3rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.service-card {
    background: var(--bg-white);
    padding: 2.5rem;
    border-radius: 15px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid #e9ecef;
}

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

.service-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    color: white;
}

.service-icon svg {
    width: 30px;
    height: 30px;
}

.service-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.service-description {
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.service-features {
    list-style: none;
    padding: 0;
}

.service-features li {
    padding: 0.5rem 0;
    color: var(--text-light);
    font-size: 0.95rem;
}

.technology-section {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    padding: 3rem;
    border-radius: 15px;
    color: white;
    text-align: center;
    margin-top: 3rem;
}

.technology-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.technology-description {
    font-size: 1.1rem;
    line-height: 1.8;
    opacity: 0.95;
}

/* About Section */
.about {
    padding: 5rem 0;
    background: var(--bg-light);
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.about-item {
    text-align: center;
    padding: 2rem;
    background: var(--bg-white);
    border-radius: 15px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

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

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

.about-item h3 {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.about-item p {
    color: var(--text-light);
    line-height: 1.8;
}

/* Contact Section */
.contact {
    padding: 5rem 0;
    background: var(--bg-white);
}

.contact-content {
    max-width: 800px;
    margin: 0 auto;
}

.contact-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.contact-item {
    text-align: center;
    padding: 2rem;
    background: var(--bg-light);
    border-radius: 15px;
}

.contact-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.contact-item h3 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

.contact-item p {
    color: var(--text-light);
}

/* Footer */
.footer {
    background: var(--text-dark);
    color: white;
    padding: 3rem 0;
    text-align: center;
}

.footer-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin-bottom: 1rem;
}

.footer-logo .dc-letter {
    color: var(--primary-color);
    -webkit-text-fill-color: var(--primary-color);
}

.footer-logo .logo-text {
    color: white;
}

.footer-text {
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 1rem;
}

.footer-copyright {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9rem;
}

/* WhatsApp Floating Button */
.whatsapp-float {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 60px;
    height: 60px;
    background: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    z-index: 999;
    transition: var(--transition);
    animation: pulse 2s infinite;
}

.whatsapp-float:hover {
    transform: scale(1.1);
    background: var(--primary-dark);
}

.whatsapp-float svg {
    width: 35px;
    height: 35px;
    color: white;
}

@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.7);
    }
    70% {
        box-shadow: 0 0 0 10px rgba(37, 211, 102, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(37, 211, 102, 0);
    }
}

/* Chat Widget */
.chat-widget {
    position: fixed;
    bottom: 110px;
    right: 30px;
    width: 350px;
    max-height: 500px;
    background: white;
    border-radius: 20px;
    box-shadow: var(--shadow-lg);
    z-index: 998;
    display: none;
    flex-direction: column;
    overflow: hidden;
    transform: translateY(20px);
    opacity: 0;
    transition: var(--transition);
}

.chat-widget.active {
    display: flex;
    transform: translateY(0);
    opacity: 1;
}

.chat-header {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    padding: 1.2rem;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.chat-logo {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.chat-logo svg {
    width: 24px;
    height: 24px;
    color: white;
}

.chat-info {
    flex: 1;
}

.chat-info h4 {
    font-size: 1rem;
    margin-bottom: 0.2rem;
}

.chat-info p {
    font-size: 0.85rem;
    opacity: 0.9;
}

.chat-toggle {
    background: none;
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: var(--transition);
}

.chat-toggle:hover {
    background: rgba(255, 255, 255, 0.2);
}

.chat-body {
    padding: 1.5rem;
    flex: 1;
    overflow-y: auto;
}

.chat-messages {
    margin-bottom: 1.5rem;
}

.chat-message {
    margin-bottom: 1rem;
}

.chat-message p {
    background: var(--bg-light);
    padding: 0.8rem 1rem;
    border-radius: 15px;
    display: inline-block;
    max-width: 80%;
}

.chat-actions {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.chat-action-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.8rem 1rem;
    background: var(--primary-color);
    color: white;
    text-decoration: none;
    border-radius: 10px;
    font-weight: 600;
    transition: var(--transition);
}

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

.chat-action-btn svg {
    width: 20px;
    height: 20px;
}

.chat-widget-toggle {
    display: none !important;
}

/* Responsive Design */
@media (max-width: 768px) {
    .menu-toggle {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        flex-direction: column;
        background: white;
        width: 100%;
        padding: 2rem;
        box-shadow: var(--shadow);
        transition: var(--transition);
        z-index: 999;
    }

    .nav-menu.active {
        left: 0;
    }

    .hero {
        background-attachment: scroll;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.1rem;
    }

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

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

    .chat-widget {
        width: calc(100% - 40px);
        right: 20px;
        bottom: 100px;
    }

    .whatsapp-float {
        bottom: 20px;
        right: 20px;
        width: 55px;
        height: 55px;
    }

    .chat-widget-toggle {
        bottom: 90px;
        right: 20px;
        width: 55px;
        height: 55px;
    }

    .technology-section {
        padding: 2rem;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }

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

    .btn {
        padding: 0.8rem 1.5rem;
        font-size: 0.9rem;
    }

    .service-card {
        padding: 1.5rem;
    }

    .dc-letter {
        font-size: 1.5rem;
    }

    .logo-text {
        font-size: 0.9rem;
    }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    * {
        animation: none !important;
        transition: none !important;
    }
}

/* Print Styles */
@media print {
    .whatsapp-float,
    .chat-widget,
    .chat-widget-toggle {
        display: none !important;
    }
}