:root {
    --primary: #5c69f5;
    --secondary: #5666f8;
    --black: #000000;
    --white: #ffffff;
    --gray: #cfd2ff;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    background: var(--black);
    color: var(--white);
}

/* ================= HEADER ================= */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 18px 60px;
    position: fixed;
    width: 100%;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(12px);
    z-index: 1000;
}

.logo {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--primary);
}

.nav {
    display: flex;
    gap: 25px;
}

.nav a {
    color: var(--white);
    text-decoration: none;
    font-weight: 500;
    transition: 0.3s;
}

.nav a:hover {
    color: var(--secondary);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: var(--white);
    border: none;
    padding: 10px 22px;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 600;
}

.btn-secondary {
    background: transparent;
    border: 1px solid var(--primary);
    color: var(--primary);
    padding: 10px 22px;
    border-radius: 6px;
}

/* ================= HERO ================= */
.hero {
    display: grid;
    grid-template-columns: 1fr 1fr;
    min-height: 100vh;
    padding: 140px 60px 80px;
    gap: 40px;
}

.hero-content h1 {
    font-family: 'Orbitron', sans-serif;
    font-size: 3.2rem;
    line-height: 1.2;
}

.hero-content h1 span {
    color: var(--primary);
}

.hero-content p {
    margin: 20px 0 35px;
    color: var(--gray);
    font-size: 1.05rem;
}

.hero-buttons {
    display: flex;
    gap: 15px;
}

/* ================= SECTIONS ================= */
.section {
    padding: 80px 60px;
}

.section h2 {
    font-family: 'Orbitron';
    font-size: 2.2rem;
    margin-bottom: 40px;
    color: var(--primary);
}

.section.dark {
    background: #050505;
}

/* ================= CARDS ================= */
.cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 30px;
}

.card {
    background: #0b0b0b;
    padding: 35px;
    border-radius: 12px;
    border: 1px solid rgba(92, 105, 245, 0.3);
    transition: all 0.3s ease;
}

.card:hover {
    transform: translateY(-12px);
    border-color: var(--primary);
}

.card h3 {
    margin-bottom: 15px;
    color: var(--secondary);
}

.card p {
    color: var(--gray);
    margin-bottom: 20px;
}

.level {
    font-weight: 600;
    color: var(--primary);
}

/* ================= METODOLOGÍA ================= */
.steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 25px;
}

.step {
    padding: 25px;
    background: #0d0d0d;
    border-radius: 10px;
    border-left: 4px solid var(--primary);
}

/* ================= NIVELES ================= */
.levels {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}

.level-box {
    padding: 25px;
    text-align: center;
    background: linear-gradient(135deg, #0d0d0d, #111);
    border-radius: 10px;
    border: 1px solid rgba(92, 105, 245, 0.3);
}

/* ================= CONTACTO ================= */
.contact-form {
    max-width: 500px;
    margin: auto;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.contact-form input,
.contact-form textarea {
    background: #0d0d0d;
    border: 1px solid rgba(92, 105, 245, 0.3);
    padding: 12px;
    color: var(--white);
    border-radius: 6px;
}

/* ================= FOOTER ================= */
.footer {
    text-align: center;
    padding: 30px;
    background: #000;
    color: var(--gray);
}

/* ================= RESPONSIVE ================= */
@media (max-width: 992px) {
    .hero {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-buttons {
        justify-content: center;
    }

    .hero-animation {
        display: none;
    }
}

@media (max-width: 768px) {
    .header {
        padding: 15px 25px;
    }

    .nav {
        display: none;
    }

    .section {
        padding: 60px 25px;
    }

    .hero {
        padding: 120px 25px 60px;
    }

    .hero-content h1 {
        font-size: 2.4rem;
    }
}