/* =========================================
   1. ZÁKLADNÍ NASTAVENÍ
   ========================================= */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Arial', sans-serif;
    background: #000;
    overflow-x: hidden;
    min-height: 100vh;
    color: #fff;
}

/* VIDEO POZADÍ */
.video-background {
    position: fixed;
    top: 50%;
    left: 50%;
    min-width: 100%;
    min-height: 100%;
    width: auto;
    height: auto;
    transform: translate(-50%, -50%);
    z-index: -100;
    object-fit: cover;
    filter: brightness(0.4);
}

/* =========================================
   2. NAVIGACE - OPRAVA ZAROVNÁNÍ
   ========================================= */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(12px);
    z-index: 9999;
    padding: 10px 0;
    border-bottom: 1px solid rgba(0, 212, 255, 0.3);
}

.nav-menu {
    display: flex;
    justify-content: center;
    align-items: center;
    list-style: none;
    gap: 20px;
}

.nav-link {
    color: #fff;
    text-decoration: none;
    font-size: 16px;
    padding: 12px 20px;
    letter-spacing: 1px;
    transition: all 0.3s ease;
    display: inline-block;
    font-weight: bold;
}

.nav-link:hover {
    background: rgba(0, 212, 255, 0.2);
    border-radius: 8px;
    color: #00d4ff;
}

/* ROLETRKA (DROPDOWN) */
.dropdown {
    position: relative;
    display: inline-block;
}

.dropdown::after {
    content: "";
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    height: 15px;
    display: block;
}

.dropdown-content {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background: rgba(0, 0, 0, 0.95);
    backdrop-filter: blur(15px);
    border: 1px solid rgba(0, 212, 255, 0.5);
    min-width: 250px;
    z-index: 10000;
    box-shadow: 0 10px 25px rgba(0,0,0,0.8);
    border-radius: 4px;
    margin-top: 5px;
}

.dropdown:hover .dropdown-content {
    display: block;
}

.drop-item {
    color: #fff !important;
    padding: 12px 20px;
    text-decoration: none;
    display: block !important;
    text-align: left;
    font-size: 0.9rem;
    transition: 0.2s;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.drop-item:hover {
    background: rgba(0, 212, 255, 0.2);
    color: #00d4ff !important;
}

/* =========================================
   3. OBSAH OSTATNÍCH STRÁNEK (TEXTOVÉ KONTEJNERY)
   ========================================= */
.main-content {
    max-width: 900px;
    margin: 160px auto 40px;
    padding: 0 20px;
}

.text-container {
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(15px);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 20px;
    padding: 50px;
    text-align: center;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.6);
}

/* =========================================
   4. MONITOR / POČITADLO
   ========================================= */
.visit-counter {
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 1000;
}

.brain-monitor {
    background: rgba(0, 0, 0, 0.85);
    border: 1px solid #00d4ff;
    border-radius: 12px;
    padding: 15px;
    display: flex;
    align-items: center;
    gap: 15px;
    color: #00d4ff;
}

.pulse-dot {
    width: 12px;
    height: 12px;
    background: #00d4ff;
    border-radius: 50%;
    animation: pulse-glow 2s infinite;
}

@keyframes pulse-glow {
    0% { transform: scale(1); box-shadow: 0 0 0 0 rgba(0, 212, 255, 0.7); }
    70% { transform: scale(1.1); box-shadow: 0 0 0 10px rgba(0, 212, 255, 0); }
    100% { transform: scale(1); box-shadow: 0 0 0 0 rgba(0, 212, 255, 0); }
}

/* =========================================
   5. SPECIFICKÝ STYL PRO KNIHU (BÍLÝ LIST)
   ========================================= */
/* Použij tento obal v HTML pro stránku s knihou */
.book-wrapper {
    display: flex;
    justify-content: center;
    padding: 140px 20px 60px; /* Aby nebyla pod navbarem */
    width: 100%;
}

.book-page {
    background-color: #ffffff;
    width: 1100px; /* Tvůj požadovaný široký list */
    min-height: 100vh;
    padding: 80px 100px;
    box-shadow: 0 10px 50px rgba(0,0,0,0.8);
    color: #000;
    font-family: 'Georgia', serif;
}

.book-page h1, .book-page h2, .book-page p {
    text-shadow: none; /* Odstraní modrou záři z textu knihy */
}

.book-title {
    font-size: 11pt;
    text-transform: uppercase;
    letter-spacing: 3px;
    color: #333;
    margin-bottom: 5px;
    text-align: left;
}

.header-line {
    border: none;
    border-top: 1px solid #000;
    margin-bottom: 30px;
}

h1.chapter-number {
    font-size: 22pt;
    color: #000;
    text-align: left;
    margin-bottom: 40px;
}

.content p {
    font-size: 14pt;
    line-height: 1.9;
    margin-bottom: 1.8em;
    text-align: justify;
    max-width: 850px;
    margin-left: auto;
    margin-right: auto;
    color: #000;
}

.drop-cap::first-letter {
    font-size: 4.5em;
    float: left;
    line-height: 0.8;
    margin-right: 15px;
    font-weight: bold;
}

.highlight-text {
    margin: 60px 0 !important;
    text-align: center !important;
    font-style: italic;
    font-size: 1.5rem;
    color: #000;
}
/* --- TLAČÍTKO VSTUP (Styl jako monitor/počitadlo) --- */
.btn-vstup {
    display: inline-block;
    padding: 15px 40px;
    background: rgba(0, 0, 0, 0.85); /* Tmavé pozadí jako u počitadla */
    color: #00d4ff; /* Tyrkysové písmo */
    font-family: 'Courier New', Courier, monospace; /* Strojové písmo */
    font-size: 1.1rem;
    font-weight: bold;
    text-transform: uppercase;
    text-decoration: none;
    letter-spacing: 3px;
    
    /* Rámeček jako má monitor */
    border: 1px solid #00d4ff; 
    border-radius: 12px;
    
    /* Záře (glow efekt) */
    box-shadow: 0 0 15px rgba(0, 212, 255, 0.3);
    transition: all 0.3s ease-in-out;
    cursor: pointer;
}

.btn-vstup:hover {
    background: rgba(0, 212, 255, 0.1); /* Jemné prosvětlení při přejetí */
    box-shadow: 0 0 25px rgba(0, 212, 255, 0.6), inset 0 0 10px rgba(0, 212, 255, 0.2);
    transform: translateY(-2px); /* Mírné nadzvednutí */
    color: #fff; /* Písmo zbělá při hoveru pro lepší efekt */
}