/* Globální proměnné */
:root {
    --color-background-dark: #1a1a2e;
    --color-text-light: #e0e0e0;
    --color-primary-accent: #00BCD4;
    --color-primary-accent-hover: #4DD0E1;
    --color-secondary-accent: #0f3460;
    --color-card-background: #2e2e4a;
    --font-heading: 'Montserrat', sans-serif;
    --font-body: 'Merriweather', serif;
}


/* Základní styly */
body { font-family: var(--font-body); line-height: 1.6; margin: 0; background-color: var(--color-background-dark); color: var(--color-text-light); }
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
a { color: var(--color-primary-accent); text-decoration: none; }
h1, h2, h3, h4 { font-family: var(--font-heading); }
h1 { font-size: 2.8em; } h2 { font-size: 2.2em; } h3 { font-size: 1.8em; }

/* Společné prvky */
.btn-primary { display: inline-block; padding: 12px 25px; border-radius: 5px; font-weight: bold; background-color: var(--color-primary-accent); color: #fff; border: none; transition: all 0.2s; }
.btn-primary:hover { background-color: var(--color-primary-accent-hover); transform: translateY(-2px); }

/* Hlavička */
.main-header { background-color: rgba(26, 26, 46, 0.9); padding: 20px 0; position: sticky; top: 0; z-index: 1000; }
.main-header .container { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; }
.site-title { margin: 0; font-size: 1.8em; }
.site-title a { color: #fff; }
.header-logo { width: 50px; cursor: pointer; }
.main-nav ul { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; }
.main-nav li { margin-left: 30px; }
.main-nav a { color: var(--color-text-light); font-weight: bold; }
/* Skrývání headeru */
header.header-hidden {transform: translateY(-100%); transition: transform 0.3s ease-in-out; }
header { transition: transform 0.3s ease-in-out;}


/* Patička */
.main-footer { background-color: #111; padding: 40px 0; text-align: center; }
.social-links img { width: 30px; margin: 0 10px; opacity: 0.7; transition: opacity 0.3s ease; }
.social-links img:hover { opacity: 1; }

/* Styly pro sekce na index.html */
section { padding: 80px 20px; text-align: center; }
section.alternate-bg { background-color: var(--color-secondary-accent); }
.hero-section, .about-section, .info-section, .quote-section { display: flex; align-items: center; justify-content: center;}
.hero-section { min-height: 70vh; background: linear-gradient(135deg, var(--color-secondary-accent) 0%, var(--color-background-dark) 100%); color: #fff; }
.hero-content, .about-content { max-width: 800px; margin: auto; }
.profile-thumbnail { width: 100px; height: 100px; border-radius: 50%; border: 3px solid var(--color-primary-accent); cursor: pointer; margin-bottom: 1rem; }
.category-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 30px; margin-top: 40px; }
.category-card { background-color: var(--color-card-background); padding: 30px; border-radius: 10px; text-align: left; transition: transform 0.3s ease, box-shadow 0.3s ease; display: flex; flex-direction: column; justify-content: space-between; color: var(--color-text-light); min-height: 250px;}
.category-card:hover { transform: translateY(-10px); }
.card-icon { width: 60px; height: 60px; background-color: var(--color-primary-accent); border-radius: 50%; margin-bottom: 20px; display: flex; align-items: center; justify-content: center; font-size: 2em; color: #fff; margin-bottom: 1rem; }
.category-card h4 { color: var(--color-primary-accent); }
.category-card p { flex-grow: 1; color: #c0c0c0;}
.card-link { display: block; margin-top: 1rem; font-weight: bold; color: var(--color-primary-accent); }

/* Modální okno a responzivita */
.photo-modal-overlay { display: none; position: fixed; z-index: 2000; left: 0; top: 0; width: 100%; height: 100%; background-color: rgba(0,0,0,0.9); align-items: center; justify-content: center; }
.photo-modal-content { position: relative; padding: 20px; }
.close-modal-btn { position: absolute; top: 10px; right: 25px; font-size: 35px; color: #fff; cursor: pointer; }
.photo-modal-image { max-width: 90vw; max-height: 80vh; }
.hidden-section { display: none !important; }

@media (max-width: 768px) {
  .main-header .container, .main-nav ul { flex-direction: column; gap: 15px; }
  .main-nav li { margin-left: 0; }
}

/* ===================================== */
/* 🧊 Výchozí styl banneru */
#friends-box {
  margin: 1.5rem auto;
  padding: 1rem;
  text-align: center;
  max-width: 300px;
}

/* 🖥 Styl pro desktop – plovoucí box */
@media (min-width: 769px) {
  #friends-box.friends-floating {
    position: fixed;
    top: 10%;
    left: 10px;
    width: 220px;
    background-color: rgba(0, 0, 0, 0.4); 
    border: 1px solid rgba(255, 255, 255, 0.25); 
    border-radius: 10px;
    padding: 15px;
    color: white;
    z-index: 1000;
    transition: all 1.3s ease;
    backdrop-filter: blur(3px);
  }

  #friends-box.friends-floating h4 {
    font-size: 1.1em;
    margin-bottom: 0.6em;
  }

  .friend-banner {
    width: 40%;
    margin-bottom: -1.5em;
    border-radius: 20px;
  }

  /* 🔻 Stav SBALENÝ */
  #friends-box.collapsed {
    width: 40px !important;
    max-width: 40px !important;
    padding: 5px !important;
    overflow: hidden;
    white-space: nowrap;
    opacity: 0.5;
  }

  /* 🔁 Tlačítko ve sbaleném stavu */
  #friends-box.collapsed #toggle-button {
    right: 5px;
    transform: rotate(180deg);
  }
}

/* 🎯 Tlačítko na sbalení */
#toggle-button {
  position: absolute;
  top: 10px;
  right: -15px;
  width: 30px;
  height: 30px;
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 50%;
  color: white;
  font-weight: bold;
  font-size: 18px;
  line-height: 28px;
  text-align: center;
  cursor: pointer;
  z-index: 1001;
  transition: all 0.3s ease;
}