:root {
    --bg-color: #0b0b0b;
    --card-bg: #151515;
    --text-color: #dddddd;
    --accent-color: #d4ff00; /* Limetková */
    --accent-dark: #a1c200;
    --font-heading: 'Montserrat', sans-serif;
    --font-body: 'Open Sans', sans-serif;
}

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

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

h1, h2, h3 { font-family: var(--font-heading); text-transform: uppercase; color: white; letter-spacing: 1px; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }

/* NAVIGÁCIA */
header {
    position: fixed; top: 0; width: 100%; padding: 20px 50px;
    display: flex; justify-content: space-between; align-items: center;
    background: rgba(11, 11, 11, 0.95); backdrop-filter: blur(5px);
    z-index: 1000; border-bottom: 1px solid #222;
}
.logo { font-size: 1.4rem; font-weight: 800; color: white; letter-spacing: 2px; }
.logo span { color: var(--accent-color); }

nav ul { display: flex; gap: 30px; }
nav a { font-size: 0.9rem; font-weight: 600; transition: color 0.3s; }
nav a:hover { color: var(--accent-color); }

/* HERO SECTION */
.hero {
    position: relative; height: 100vh;
    display: flex; align-items: center; justify-content: center;
    text-align: center; padding: 0 20px; overflow: hidden;
}
#energy-canvas {
    position: absolute; top: 0; left: 0; width: 100%; height: 100%;
    z-index: -1; opacity: 0.8;
}
.hero-content h1 { font-size: 4.5rem; margin-bottom: 10px; line-height: 1; }
.hero-content p { font-size: 1.3rem; color: #aaa; margin-bottom: 30px; }

/* TLAČIDLÁ */
.btn {
    padding: 15px 40px; background: var(--accent-color); color: #000;
    font-weight: 800; border-radius: 5px; text-transform: uppercase;
    transition: 0.3s; display: inline-block; border: none; cursor: pointer;
}
.btn:hover { background: white; }
.full-width { width: 100%; }

/* VŠEOBECNÉ */
section { padding: 80px 20px; max-width: 1100px; margin: 0 auto; }
.section-title { text-align: center; font-size: 2.5rem; margin-bottom: 50px; }
.section-title::after { content: ''; display: block; width: 60px; height: 3px; background: var(--accent-color); margin: 15px auto 0; }

/* KARTY SLUŽIEB */
.services-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 30px; }
.card {
    background: var(--card-bg); padding: 30px; border-radius: 8px; border: 1px solid #222;
    transition: transform 0.3s; display: flex; flex-direction: column; justify-content: space-between;
}
.card:hover { transform: translateY(-5px); border-color: var(--accent-color); }
.card h3 { margin-bottom: 15px; color: var(--accent-color); }

/* Mini formulár v karte */
.card-action { margin-top: 25px; border-top: 1px solid #333; padding-top: 20px; }
.cta-text { font-size: 0.9rem; color: #888; margin-bottom: 10px; font-style: italic; }

.mini-input-group { display: flex; gap: 5px; }
.card-email-input {
    background: #000; border: 1px solid #333; color: white;
    padding: 10px; border-radius: 4px; flex: 1; font-size: 0.9rem;
}
.btn-icon {
    background: var(--accent-color); border: none; width: 40px;
    border-radius: 4px; cursor: pointer; font-weight: bold; font-size: 1.2rem;
    transition: background 0.3s;
}
.btn-icon:hover { background: white; }

/* FORMULÁR KONTAKT */
.contact-form { max-width: 600px; margin: 0 auto; background: var(--card-bg); padding: 40px; border-radius: 8px; }
.form-group { margin-bottom: 20px; text-align: left; }
.form-group label { display: block; margin-bottom: 8px; font-size: 0.85rem; color: #888; text-transform: uppercase; }
input, textarea { width: 100%; padding: 12px; background: #0b0b0b; border: 1px solid #333; color: white; border-radius: 4px; }
input:focus, textarea:focus { outline: none; border-color: var(--accent-color); }

/* O MNE */
.about-container { display: flex; gap: 40px; align-items: center; flex-wrap: wrap; }
.about-img, .about-text { flex: 1; min-width: 300px; }
.about-img img { width: 100%; border-radius: 8px; filter: grayscale(100%); transition: 0.5s; }
.about-img img:hover { filter: grayscale(0%); }

footer { text-align: center; padding: 40px; margin-top: 50px; border-top: 1px solid #222; color: #555; }

/* Reveal Animation */
.reveal { opacity: 0; transform: translateY(30px); transition: all 0.8s ease-out; }
.reveal.active { opacity: 1; transform: translateY(0); }

@media (max-width: 768px) {
    .hero-content h1 { font-size: 3rem; }
    nav { display: none; }
    header { justify-content: center; }
}
/* --- SOCIÁLNE SIETE --- */
.social-links {
    display: flex;
    justify-content: center;
    gap: 25px; /* Medzera medzi ikonami */
    margin-bottom: 25px;
}

.social-icon {
    width: 32px;
    height: 32px;
    display: block;
    transition: transform 0.3s ease;
}

/* Nastavenie SVG */
.social-icon svg {
    width: 100%;
    height: 100%;
    fill: #ffffff; /* Základná biela farba */
    transition: fill 0.3s ease;
}

/* Hover efekt - zmení sa na limetkovú a zväčší sa */
.social-icon:hover {
    transform: scale(1.15); /* Jemné zväčšenie */
}

.social-icon:hover svg {
    fill: var(--accent-color); /* Zmena na neónovú */
    filter: drop-shadow(0 0 8px rgba(212, 255, 0, 0.6)); /* Žiara */
}

/* --- BANNER PRE KNIHU --- */
#book-promo {
    padding: 60px 20px;
    max-width: 1000px;
    margin: 0 auto;
}

.book-banner {
    background: linear-gradient(45deg, #1a1a1a, #0f0f0f);
    border: 1px solid var(--accent-color); /* Limetkový okraj */
    border-radius: 15px;
    padding: 40px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 30px;
    box-shadow: 0 0 20px rgba(212, 255, 0, 0.1); /* Jemná limetková žiara */
}

.book-content h2 {
    font-size: 2rem;
    color: var(--accent-color);
    margin-bottom: 10px;
}

.book-content p {
    color: #ccc;
    font-size: 1.1rem;
    max-width: 500px;
}

/* Špeciálne tlačidlo pre knihu */
.btn-book {
    background: transparent;
    border: 2px solid var(--accent-color);
    color: var(--accent-color);
    padding: 15px 30px;
}

.btn-book:hover {
    background: var(--accent-color);
    color: #000;
    box-shadow: 0 0 15px var(--accent-color);
}

/* Mobilná verzia bannera */
@media (max-width: 768px) {
    .book-banner {
        flex-direction: column;
        text-align: center;
    }
    .book-action {
        width: 100%;
    }
    .btn-book {
        display: block;
        width: 100%;
        text-align: center;
    }
}