:root {
    /* Color Palette - Premium Dark Tech Theme */
    --primary: #00e5ff;
    /* Cyan accent */
    --primary-dark: #00b8cc;
    --secondary: #7000ff;
    /* Purple accent */
    --bg-dark: #0a0a0a;
    --bg-card: #141414;
    --bg-glass: rgba(20, 20, 20, 0.7);
    --text-main: #ffffff;
    --text-muted: #a0a0a0;
    --border-color: #333333;
    --gradient-main: linear-gradient(135deg, var(--secondary), var(--primary));

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 8rem;

    /* Transitions */
    --transition: all 0.3s ease;

    /* Fonts */
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
}

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

body {
    background-color: var(--bg-dark);
    color: var(--text-main);
    font-family: var(--font-body);
    line-height: 1.6;
    overflow-x: hidden;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
}

h1 {
    font-size: 3.5rem;
    background: var(--gradient-main);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

h2 {
    font-size: 2.5rem;
    color: var(--primary);
}

h3 {
    font-size: 1.75rem;
    color: var(--primary);
}

h4,
h5,
h6 {
    color: var(--primary);
}

strong,
b {
    color: var(--primary);
    font-weight: 700;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    display: block;
    border-radius: 8px;
}

/* Utilities */
.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

.btn {
    display: inline-block;
    padding: 0.8rem 2rem;
    border-radius: 50px;
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.9rem;
    cursor: pointer;
    border: none;
    transition: var(--transition);
}

.btn-primary {
    background: var(--gradient-main);
    color: white;
    box-shadow: 0 4px 15px rgba(0, 229, 255, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 229, 255, 0.5);
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--primary);
    color: var(--primary);
}

.btn-outline:hover {
    background: var(--primary);
    color: var(--bg-dark);
}

.section {
    padding: var(--spacing-xl) 0;
}

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

.mb-sm {
    margin-bottom: var(--spacing-sm);
}

.mb-md {
    margin-bottom: var(--spacing-md);
}

.mb-lg {
    margin-bottom: var(--spacing-lg);
}

/* Header */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: var(--bg-glass);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding: 1rem 0;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    font-family: var(--font-heading);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo img {
    height: 40px;
}

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

.nav-links a {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-muted);
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--primary);
}

.mobile-toggle {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
}

/* Hero Section */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    background: url('Recursos/BannerA.jpg?v=2') no-repeat center center/cover;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to right, rgba(10, 10, 10, 0.9), rgba(10, 10, 10, 0.6));
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
}

.hero p {
    font-size: 1.25rem;
    color: var(--text-muted);
    margin-bottom: var(--spacing-md);
    max-width: 600px;
}

.hero-btns {
    display: flex;
    gap: 1rem;
}

/* Value Blocks */
.value-blocks {
    background: var(--bg-card);
    margin-top: -50px;
    position: relative;
    z-index: 10;
    border-radius: 12px;
    padding: var(--spacing-md);
    box-shadow: 0 -10px 30px rgba(0, 0, 0, 0.5);
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
}

.value-item {
    text-align: center;
    padding: var(--spacing-sm);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 8px;
    transition: var(--transition);
}

.value-item:hover {
    background: rgba(255, 255, 255, 0.03);
    border-color: var(--primary);
}

.value-item i {
    font-size: 2rem;
    color: var(--primary);
    margin-bottom: 1rem;
}

/* Services Preview */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
}

.service-card {
    background: var(--bg-card);
    padding: var(--spacing-md);
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    border-color: var(--secondary);
}

.service-card h3 {
    margin-top: 1rem;
    font-size: 1.5rem;
}

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

.service-icon {
    font-size: 2.5rem;
    color: var(--secondary);
}

.service-link {
    color: var(--primary);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.service-link:hover {
    gap: 0.8rem;
}

/* Footer */
footer {
    background: #050505;
    padding-top: var(--spacing-xl);
    border-top: 1px solid #222;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.footer-col h4 {
    color: var(--primary);
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
}

.footer-col ul li {
    margin-bottom: 0.8rem;
}

.footer-col ul li a {
    color: var(--text-muted);
}

.footer-col ul li a:hover {
    color: var(--primary);
}

.footer-bottom {
    border-top: 1px solid #222;
    padding: 2rem 0;
    text-align: center;
    color: #666;
    font-size: 0.9rem;
}

/* Mobile */
@media (max-width: 768px) {
    h1 {
        font-size: 2.5rem;
    }

    .mobile-toggle {
        display: block;
    }

    .nav-links {
        position: fixed;
        top: 70px;
        left: 0;
        width: 100%;
        background: var(--bg-card);
        flex-direction: column;
        padding: 2rem;
        gap: 1.5rem;
        transform: translateY(-150%);
        transition: var(--transition);
    }

    .nav-links.active {
        transform: translateY(0);
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    }

    .hero-btns {
        flex-direction: column;
    }

    .value-blocks {
        margin-top: var(--spacing-md);
        background: transparent;
        box-shadow: none;
        padding: 0;
    }

    h2 {
        font-size: 1.8rem;
        word-wrap: break-word;
    }

    h3 {
        font-size: 1.4rem;
    }

    .course-highlight {
        padding: 1.5rem;
    }

    .section {
        padding: 4rem 0;
    }

    .container {
        padding: 0 1.5rem;
    }
}

/* Animations */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

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

/* Utilities */
.text-primary {
    color: var(--primary) !important;
}

.text-secondary {
    color: var(--secondary) !important;
}