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

html {
    scroll-behavior: smooth;
}

body { 
    font-family: 'Inter', sans-serif;
    background-color: #0b0f19; 
    color: #f8fafc; 
    
    background-image: linear-gradient(to bottom, rgba(11, 15, 25, 0.75), rgba(11, 15, 25, 0.9)), url('/assets/img/novinky_pozadi.jpg'); 
    
    background-repeat: no-repeat;
    background-position: center center;
    background-size: cover;
    background-attachment: fixed; 
    
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

main {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 16px;
    width: 100%;
}

main.content-container {
    max-width: 896px;
    padding: 40px 16px;
}

@media (min-width: 768px) {
    main.content-container {
        padding: 80px 16px;
    }
}

/* ==========================================================================
   2. NAVIGACE (Sticky Navbar)
   ========================================================================== */
.navbar, /* Skryto v základu pro PC verze */
.section-divider {
    border: none;
    height: 1px;
    background: linear-gradient(to right, transparent, #3b82f6, transparent);
    margin: 60px auto;
    width: 80%;
    box-shadow: 0 0 10px rgba(59, 130, 246, 0.5); 
}






/* ==========================================================================
   3. STRÁNKA O NÁS (o_nas.html)
   ========================================================================== */
.page-header {
    text-align: center;
    margin-bottom: 40px;
}

.page-header h1 {
    font-size: 36px;
    font-weight: 900;
    margin-bottom: 16px;
}

.subtitle {
    font-size: 16px;
    color: #94a3b8;
    margin-bottom: 0;
    max-width: 672px;
    line-height: 1.5;
    margin-left: auto;
    margin-right: auto;
}

@media (min-width: 768px) {
    .page-header {
        margin-bottom: 64px;
    }
    .page-header h1 {
        font-size: 48px;
        margin-bottom: 24px;
    }
    .subtitle {
        font-size: 20px;
        line-height: 1.6;
    }
}

/* Mřížka se statistikami */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr); 
    gap: 16px;
    margin-bottom: 48px;
}

@media (min-width: 768px) {
    .stats-grid {
        grid-template-columns: repeat(4, 1fr); 
        gap: 24px;
        margin-bottom: 80px;
    }
}

.stat-card {
    background-color: #1e293b;
    border: 1px solid #334155;
    padding: 20px;
    border-radius: 20px;
    text-align: center;
}

@media (min-width: 768px) {
    .stat-card {
        padding: 24px;
        border-radius: 24px;
    }
}

.stat-number {
    color: #3b82f6;
    font-weight: 900;
    font-size: 22px;
    margin-bottom: 4px;
}

.stat-label {
    color: #64748b;
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

@media (min-width: 768px) {
    .stat-number {
        font-size: 26px;
    }
    .stat-label {
        font-size: 14px;
    }
}

.about-article {
    background-color: #1e293b;
    border: 1px solid #334155;
    padding: 24px;
    border-radius: 24px;
    font-size: 16px;
    line-height: 1.6;
}

.about-article p {
    margin-bottom: 20px;
    color: #cbd5e1;
}

.about-article p:last-of-type {
    margin-bottom: 0;
}

@media (min-width: 768px) {
    .about-article {
        padding: 40px;
        font-size: 18px;
        line-height: 1.8;
    }
    .about-article p {
        margin-bottom: 24px;
    }
}

.join-box {
    margin-top: 32px;
    padding: 20px;
    background-color: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.3);
    border-radius: 16px;
}

.join-box h3 {
    color: #60a5fa;
    font-weight: 700;
    font-size: 18px;
    margin-bottom: 8px;
}

.join-box p {
    color: #f8fafc;
    margin-bottom: 0;
    font-size: 14px;
    line-height: 1.5;
}

@media (min-width: 768px) {
    .join-box {
        padding: 24px;
    }
    .join-box h3 {
        font-size: 20px;
    }
    .join-box p {
        font-size: 16px;
        line-height: 1.6;
    }
}

/* ==========================================================================
   4. PATIČKA (Footer)
   ========================================================================== */
footer {
    background-color: #1e293b;
    border-top: 1px solid #1e293b;
    padding: 32px 16px;
    margin-top: auto;
    text-align: center;
}

.copyright {
    color: #475569;
    font-size: 14px;
}

/* ==========================================================================
   5. ZMĚNY POUZE PRO MOBIL (Šířka pod 768px)
   ========================================================================== */