:root {
    --bg-color: #f4f5f7;
    --text-color: #333;
    --heading-color: #1a202c;
    --accent-color: #3b82f6; /* Příjemná modrá */
    --card-bg: #ffffff;
    --code-bg: #1e293b;
    --code-text: #e2e8f0;
    --border-radius: 8px;
    --warning-bg: #fff7ed;
    --warning-border: #f97316;
}

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    margin: 0;
    padding: 0;
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 20px;
}

header {
    text-align: center;
    margin-bottom: 40px;
    padding: 40px 0;
}

h1 {
    font-size: 3rem;
    margin-bottom: 0.5rem;
    color: var(--heading-color);
    letter-spacing: -0.02em;
}

.subtitle {
    font-size: 1.2rem;
    color: #64748b;
    font-weight: 500;
}

/* Karty pro každou sekci */
section {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 40px;
    margin-bottom: 30px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    transition: transform 0.2s;
}

section:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

h2 {
    color: var(--accent-color);
    border-bottom: 2px solid #e2e8f0;
    padding-bottom: 10px;
    margin-top: 0;
    font-size: 1.8rem;
}

h3 {
    color: var(--heading-color);
    margin-top: 30px;
    font-size: 1.4rem;
    border-left: 4px solid var(--accent-color);
    padding-left: 10px;
}

h4 {
    color: #475569;
    font-weight: 600;
    margin-top: 20px;
    text-transform: uppercase;
    font-size: 0.9rem;
    letter-spacing: 0.05em;
}

/* Seznamy */
ul, ol {
    margin-left: 20px;
}

li {
    margin-bottom: 8px;
}

strong {
    color: #0f172a;
    font-weight: 600;
    background-color: #e0f2fe; /* Zvýrazňovač */
    padding: 0 4px;
    border-radius: 4px;
}

/* Kódové bloky */
pre {
    background-color: var(--code-bg);
    color: var(--code-text);
    padding: 20px;
    border-radius: var(--border-radius);
    overflow-x: auto;
    font-family: 'Fira Code', monospace;
    font-size: 0.9rem;
    line-height: 1.5;
    border: 1px solid #334155;
    box-shadow: inset 0 2px 4px 0 rgba(0, 0, 0, 0.2);
}

code {
    font-family: 'Fira Code', monospace;
}

/* Inline kód (uvnitř textu) */
li code, p code {
    background-color: #f1f5f9;
    color: #d63384; /* Růžová pro inline kód */
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.9em;
    border: 1px solid #cbd5e1;
}

/* Warning / Alert box */
.warning, .alert {
    background-color: var(--warning-bg);
    border-left: 5px solid var(--warning-border);
    padding: 15px;
    margin: 20px 0;
    color: #c2410c;
}

.note {
    background-color: #eff6ff;
    border-left: 5px solid #3b82f6;
    padding: 15px;
    margin: 20px 0;
    color: #1e40af;
}

.status-codes h4 {
    color: #0f766e;
    margin-bottom: 5px;
}

footer {
    text-align: center;
    padding: 40px;
    color: #64748b;
    font-weight: bold;
}

/* Responzivita */
@media (max-width: 768px) {
    .container {
        padding: 10px;
    }
    
    section {
        padding: 20px;
    }

    h1 {
        font-size: 2rem;
    }
}