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

:root {
    --primary-color: #2563eb;
    --secondary-color: #1e40af;
    --accent-color: #3b82f6;
    --dark-bg: #1e293b;
    --light-bg: #f1f5f9;
    --text-dark: #0f172a;
    --text-light: #64748b;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: #ffffff;
}

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

/* Header y Navegación */
header {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

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

.logo h1 {
    font-size: 1.5rem;
    font-weight: 700;
}

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

.nav-menu a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
    padding: 0.5rem 1rem;
    border-radius: 5px;
}

.nav-menu a:hover {
    background-color: rgba(255, 255, 255, 0.2);
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 6rem 2rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1440 320"><path fill="%23ffffff" fill-opacity="0.1" d="M0,96L48,112C96,128,192,160,288,160C384,160,480,128,576,122.7C672,117,768,139,864,138.7C960,139,1056,117,1152,101.3C1248,85,1344,75,1392,69.3L1440,64L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z"></path></svg>') no-repeat bottom;
    background-size: cover;
}

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

.hero h2 {
    font-size: 3rem;
    margin-bottom: 1rem;
    animation: fadeInUp 1s ease;
}

.hero p {
    font-size: 1.3rem;
    margin-bottom: 2rem;
    animation: fadeInUp 1s ease 0.2s;
    animation-fill-mode: both;
}

.cta-button {
    background-color: white;
    color: var(--primary-color);
    padding: 1rem 2.5rem;
    font-size: 1.1rem;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

/* Sección de Dispositivos */
.devices-section {
    padding: 5rem 2rem;
    background-color: var(--light-bg);
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--text-dark);
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 100px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    margin: 1rem auto;
    border-radius: 2px;
}

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

.device-card {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    text-align: center;
}

.device-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

.device-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
    animation: bounce 2s infinite;
}

.device-card h3 {
    color: var(--primary-color);
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.device-card p {
    color: var(--text-light);
    margin-bottom: 1.5rem;
}

.learn-more {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: white;
    padding: 0.7rem 1.5rem;
    border: none;
    border-radius: 25px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s ease;
}

.learn-more:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 15px rgba(37, 99, 235, 0.4);
}

/* Topologías */
.topologies-section {
    padding: 5rem 2rem;
    background: white;
}

.topologies-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.topology-card {
    background: linear-gradient(135deg, #f6f8fb 0%, #e9ecef 100%);
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    border: 2px solid transparent;
    transition: all 0.3s ease;
}

.topology-card:hover {
    border-color: var(--primary-color);
    transform: scale(1.03);
}

.topology-card h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.topology-visual {
    width: 100%;
    height: 150px;
    margin-top: 1.5rem;
    background: white;
    border-radius: 10px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.topology-visual::before {
    content: '⚙️';
    font-size: 3rem;
    opacity: 0.3;
}

/* Animación de Red */
.network-animation {
    padding: 5rem 2rem;
    background: linear-gradient(135deg, #1e293b 0%, #334155 100%);
    color: white;
}

.animation-container {
    position: relative;
    height: 300px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 15px;
    margin: 2rem 0;
    display: flex;
    justify-content: space-around;
    align-items: center;
    padding: 2rem;
}

.network-node {
    background: var(--primary-color);
    color: white;
    padding: 1.5rem;
    border-radius: 50%;
    font-weight: 600;
    box-shadow: 0 4px 15px rgba(37, 99, 235, 0.5);
    z-index: 2;
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    font-size: 0.9rem;
}

.data-packet {
    position: absolute;
    width: 20px;
    height: 20px;
    background: var(--success-color);
    border-radius: 50%;
    left: 10%;
    top: 50%;
    transform: translateY(-50%);
    opacity: 0;
    box-shadow: 0 0 20px var(--success-color);
}

.data-packet.animate {
    animation: packetFlow 4s ease-in-out;
}

/* Footer */
footer {
    background: var(--dark-bg);
    color: white;
    padding: 3rem 2rem 1rem;
}

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

.footer-author {
    background: rgba(255, 255, 255, 0.1);
    padding: 1.5rem;
    border-radius: 10px;
    border-left: 4px solid var(--primary-color);
}

.footer-author h4 {
    color: var(--accent-color);
    margin-bottom: 0.5rem;
}

.footer-links ul {
    list-style: none;
}

.footer-links a {
    color: #94a3b8;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: white;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: #94a3b8;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    animation: fadeIn 0.3s;
}

.modal-content {
    background-color: white;
    margin: 5% auto;
    padding: 2rem;
    border-radius: 15px;
    width: 80%;
    max-width: 600px;
    position: relative;
    animation: slideDown 0.3s;
}

.close {
    color: #aaa;
    float: right;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    transition: color 0.3s;
}

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

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

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

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

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

@keyframes packetFlow {
    0% {
        left: 10%;
        opacity: 1;
    }
    25% {
        left: 35%;
        opacity: 1;
    }
    50% {
        left: 60%;
        opacity: 1;
    }
    75% {
        left: 85%;
        opacity: 1;
    }
    100% {
        left: 85%;
        opacity: 0;
    }
}

/* Responsive */
@media (max-width: 768px) {
    .nav-menu {
        gap: 1rem;
        flex-wrap: wrap;
    }

    .hero h2 {
        font-size: 2rem;
    }

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

    .devices-grid,
    .topologies-grid {
        grid-template-columns: 1fr;
    }

    .animation-container {
        flex-direction: column;
        height: auto;
        gap: 2rem;
    }

    .network-node {
        position: static !important;
    }
}