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

:root {
    --bg: #070b10;
    --bg-soft: #0d131a;
    --border: #1d2935;
    --text: #e6edf3;
    --muted: #8b98a5;
    --green: #00ff9c;
    --green-dark: #00b875;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: Arial, Helvetica, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
}

a {
    color: inherit;
    text-decoration: none;
}

/* =========================
   HEADER
========================= */

header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(7, 11, 16, 0.92);
    border-bottom: 1px solid var(--border);
    backdrop-filter: blur(10px);
}

.navbar {
    max-width: 1200px;
    margin: auto;
    padding: 18px 25px;

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

.logo {
    font-size: 1.15rem;
    font-weight: 800;
    letter-spacing: 2px;
}

.logo span {
    color: var(--green);
}

nav {
    display: flex;
    gap: 28px;
}

nav a {
    color: var(--muted);
    font-size: 0.92rem;
    transition: color 0.2s;
}

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

/* =========================
   HERO
========================= */

.hero {
    max-width: 1200px;
    margin: auto;
    padding: 110px 25px 100px;

    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 70px;
    align-items: center;
}

.hero-tag {
    display: inline-block;

    padding: 7px 12px;
    margin-bottom: 25px;

    border: 1px solid var(--border);
    border-radius: 4px;

    color: var(--green);
    font-size: 0.75rem;
    letter-spacing: 1.5px;
}

.hero-tag span {
    font-size: 0.7rem;
}

.hero h1 {
    font-size: clamp(3rem, 6vw, 5.5rem);
    line-height: 1.02;
    letter-spacing: -3px;
    margin-bottom: 30px;
}

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

.hero p {
    max-width: 650px;
    color: var(--muted);
    font-size: 1.1rem;
}

.buttons {
    margin-top: 35px;
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.button {
    display: inline-block;

    padding: 12px 20px;

    border: 1px solid var(--green);
    border-radius: 5px;

    color: var(--green);

    font-size: 0.9rem;
    font-weight: bold;

    transition: all 0.2s;
}

.button:hover {
    background: var(--green);
    color: #06110c;
}

.button.secondary {
    border-color: var(--border);
    color: var(--text);
}

.button.secondary:hover {
    border-color: var(--green);
    color: var(--green);
    background: transparent;
}

/* =========================
   TERMINAL
========================= */

.hero-terminal {
    background: #05080c;
    border: 1px solid var(--border);
    border-radius: 8px;
    overflow: hidden;

    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.45);
}

.terminal-header {
    height: 38px;

    display: flex;
    align-items: center;

    gap: 7px;

    padding-left: 15px;

    background: #0b1016;
    border-bottom: 1px solid var(--border);
}

.terminal-header span {
    width: 10px;
    height: 10px;

    border-radius: 50%;

    background: #39434e;
}

.terminal-body {
    padding: 25px;

    font-family: "Courier New", monospace;
    font-size: 0.82rem;
    line-height: 1.9;
}

.terminal-green {
    color: var(--green);
}

.terminal-output {
    color: #7d8995;
    padding-left: 10px;
}

/* =========================
   SECTIONS
========================= */

section {
    max-width: 1200px;
    margin: auto;
    padding: 90px 25px;
}

.section-heading {
    display: flex;
    justify-content: space-between;
    align-items: end;

    gap: 50px;

    margin-bottom: 40px;
}

.section-heading h2 {
    margin-top: 10px;

    font-size: 2.4rem;
    line-height: 1.1;
}

.section-heading > p {
    max-width: 450px;
    color: var(--muted);
}

.section-label {
    color: var(--green);

    font-size: 0.72rem;
    font-weight: bold;

    letter-spacing: 2px;
}

/* =========================
   CARDS
========================= */

.cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.card {
    position: relative;

    padding: 30px;

    background: var(--bg-soft);
    border: 1px solid var(--border);
    border-radius: 7px;

    transition:
        transform 0.2s,
        border-color 0.2s;
}

.card:hover {
    transform: translateY(-5px);
    border-color: var(--green);
}

.card-number {
    position: absolute;
    top: 20px;
    right: 22px;

    color: #26313c;

    font-family: monospace;
    font-size: 0.75rem;
}

.card-icon {
    font-size: 2rem;
    margin-bottom: 20px;
}

.card h3 {
    margin-bottom: 10px;
    font-size: 1.25rem;
}

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

.card a {
    color: var(--green);
    font-size: 0.85rem;
}

/* =========================
   HOMELAB
========================= */

.lab-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1px;

    background: var(--border);
    border: 1px solid var(--border);
}

.lab-item {
    padding: 30px;

    display: flex;
    align-items: flex-start;

    gap: 20px;

    background: var(--bg);
}

.lab-icon {
    font-size: 1.8rem;
}

.lab-item h3 {
    margin-bottom: 5px;
}

.lab-item p {
    color: var(--muted);
    font-size: 0.9rem;
}

/* =========================
   ARTÍCULOS
========================= */

.article-placeholder {
    min-height: 280px;

    display: flex;
    flex-direction: column;

    justify-content: center;
    align-items: center;

    text-align: center;

    border: 1px dashed var(--border);
    border-radius: 7px;

    background:
        linear-gradient(
            135deg,
            rgba(0, 255, 156, 0.02),
            transparent
        );
}

.article-placeholder-icon {
    width: 55px;
    height: 55px;

    display: flex;
    justify-content: center;
    align-items: center;

    margin-bottom: 20px;

    border: 1px solid var(--border);
    border-radius: 50%;

    color: var(--green);

    font-size: 1.7rem;
}

.article-placeholder h3 {
    margin-bottom: 8px;
}

.article-placeholder p {
    color: var(--muted);
}

/* =========================
   SOBRE MÍ
========================= */

.about {
    max-width: 800px;
}

.about h2 {
    margin: 15px 0 20px;

    font-size: 2.8rem;
}

.about p {
    color: var(--muted);
    font-size: 1.05rem;
}

/* =========================
   FOOTER
========================= */

footer {
    margin-top: 50px;

    border-top: 1px solid var(--border);

    background: #05080c;
}

.footer-content {
    max-width: 1200px;
    margin: auto;

    padding: 35px 25px;

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

.footer-content p {
    color: var(--muted);
    font-size: 0.85rem;
}

.footer-bottom {
    padding: 15px 25px;

    text-align: center;

    border-top: 1px solid var(--border);

    color: #58636f;

    font-size: 0.75rem;
}

/* =========================
   RESPONSIVE
========================= */

@media (max-width: 900px) {

    .hero {
        grid-template-columns: 1fr;
        gap: 50px;
    }

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

    .lab-grid {
        grid-template-columns: repeat(2, 1fr);
    }

}

@media (max-width: 650px) {

    .navbar {
        flex-direction: column;
        gap: 15px;
    }

    nav {
        gap: 15px;
        flex-wrap: wrap;
        justify-content: center;
    }

    .hero {
        padding-top: 70px;
    }

    .hero h1 {
        letter-spacing: -2px;
    }

    .section-heading {
        flex-direction: column;
        align-items: flex-start;
    }

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

    .footer-content {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }

}