/* Základní reset a box-sizing */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* Nastavení písma pro cloudový/profesionální vzhled */
body {
    font-family: 'Poppins', sans-serif;
    line-height: 1.6;
    background-color: #f4f7fa; /* Velmi světle šedá pro "cloud" efekt */
    color: #333;
}

/* Kontejner pro omezení šířky obsahu */
.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px 0;
}

/* Barvy */
:root {
    --primary-color: #007bff; /* Typická cloudová modrá */
    --secondary-color: #6c757d;
    --accent-color: #28a745; /* Zelená pro CTA */
    --text-dark: #333;
    --text-light: #fff;
    --bg-light: #fff;
    --bg-dark: #1f2a38;
}

/* --- Header & Navigace --- */
.header {
    background-color: var(--bg-light);
    border-bottom: 1px solid #e0e6ed;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
}

.header h1 {
    font-size: 28px;
    font-weight: 700;
    color: var(--primary-color);
}

.header h1 span {
    color: var(--text-dark);
    font-weight: 300;
}

.header nav a {
    text-decoration: none;
    color: var(--secondary-color);
    margin-left: 20px;
    font-weight: 600;
    transition: color 0.3s;
}

.header nav a:hover {
    color: var(--primary-color);
}


/* --- CTA Tlačítko (Cloud Style) --- */
.cta-button {
    display: inline-block;
    background-color: var(--accent-color);
    color: var(--text-light);
    padding: 12px 30px;
    border-radius: 5px;
    text-decoration: none;
    font-weight: 600;
    letter-spacing: 0.5px;
    transition: background-color 0.3s, transform 0.2s;
    border: none;
    cursor: pointer;
}

.cta-button:hover {
    background-color: #218838; /* Tmavší zelená */
    transform: translateY(-2px);
}

.secondary-cta {
    background-color: var(--primary-color);
}

.secondary-cta:hover {
    background-color: #0056b3; 
}


/* --- Hero Sekce (Dominantní prvek) --- */
.hero-section {
    background-color: var(--bg-dark); /* Tmavší, profesionální pozadí */
    color: var(--text-light);
    padding: 100px 0;
    text-align: center;
    clip-path: polygon(0 0, 100% 0, 100% 90%, 0% 100%); /* Volitelný moderní řez */
}

.hero-section .tagline {
    font-size: 14px;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.hero-section h2 {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 20px;
    line-height: 1.1;
}

.hero-section .description {
    font-size: 18px;
    max-width: 700px;
    margin: 0 auto 30px;
    color: #c9d6e4;
}

/* --- Sekce Vlastností (Features) --- */
.features-section {
    padding: 80px 0;
    text-align: center;
    background-color: var(--bg-light);
}

.features-section h3 {
    font-size: 32px;
    margin-bottom: 50px;
    color: var(--text-dark);
}

.feature-grid {
    display: flex;
    justify-content: space-around;
    gap: 30px;
    margin-bottom: 60px;
}

.feature-item {
    flex: 1;
    padding: 30px;
    background-color: #f8f9fa;
    border: 1px solid #e9ecef;
    border-radius: 8px;
    transition: transform 0.3s, box-shadow 0.3s;
}

.feature-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.08);
}

.feature-item i {
    font-size: 40px;
    color: var(--primary-color);
    margin-bottom: 15px;
    display: block;
}

.feature-item h4 {
    font-size: 20px;
    margin-bottom: 10px;
    color: var(--text-dark);
}

/* --- Box s cenovou nabídkou --- */
.pricing-box {
    background-color: #e6f0ff; /* Světle modré pozadí */
    padding: 40px;
    border-radius: 8px;
    border-left: 5px solid var(--primary-color);
    max-width: 800px;
    margin: 0 auto;
}

.pricing-box h4 {
    font-size: 24px;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.price-info {
    font-size: 18px;
    margin-bottom: 25px;
    color: #495057;
}


/* --- Kontaktní sekce (S MAILTO ODZKAZEM) --- */
.contact-section {
    padding: 80px 0;
    background-color: #f4f7fa;
    text-align: center;
}

.contact-section h3 {
    margin-bottom: 30px;
    font-size: 32px;
}

.contact-info-text {
    font-size: 18px;
    margin-bottom: 30px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    color: var(--secondary-color);
}

.contact-mail-button {
    /* Přidává větší padding pro výraznější tlačítko */
    font-size: 18px;
    padding: 15px 40px;
}

.contact-email-display {
    margin-top: 20px;
    font-size: 16px;
    color: var(--text-dark);
}

/* --- Footer --- */
.footer {
    background-color: var(--bg-dark);
    color: #99a2ad;
    text-align: center;
    padding: 20px 0;
    font-size: 14px;
}

/* --- Responzivita (pro mobily) --- */
@media (max-width: 768px) {
    .hero-section h2 {
        font-size: 36px;
    }

    .feature-grid {
        flex-direction: column;
    }
    
    .header .container {
        flex-direction: column;
        text-align: center;
    }

    .header nav {
        margin-top: 10px;
    }

    .header nav a {
        margin: 0 10px;
    }
}