/* Moderní styl pro stránky Vyuka HK - inspirováno designem CŽV */

/* Reset a základní styly */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    background-color: #f5f5f5;
}

/* Header styly */
header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 30px 20px;
    border-radius: 10px;
    margin-bottom: 30px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

#main-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 30px 20px;
    border-radius: 10px;
    margin-bottom: 30px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

header h1 {
    margin: 0;
    font-size: 2em;
    color: white;
}

#logo {
    color: white;
    text-decoration: none;
    font-size: 1.5rem;
    font-weight: 600;
    display: block;
}

#logo:hover {
    opacity: 0.9;
}

header a {
    color: white;
    text-decoration: none;
    background: rgba(255,255,255,0.2);
    padding: 10px 20px;
    border-radius: 5px;
    font-weight: 500;
    transition: all 0.3s ease;
    border: 2px solid white;
    display: inline-block;
}

header a:hover {
    background: rgba(255,255,255,0.3) !important;
    transform: translateY(-2px);
}

/* Main content */
main {
    background: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    margin-bottom: 30px;
}

/* Nadpisy */
h1 {
    color: #667eea;
    margin-bottom: 20px;
}

h2 {
    color: #667eea;
    border-bottom: 3px solid #667eea;
    padding-bottom: 10px;
    margin-top: 40px;
    margin-bottom: 20px;
}

h3 {
    color: #764ba2;
    margin-top: 30px;
    margin-bottom: 15px;
}

/* Seznamy */
ul {
    list-style: none;
    padding: 0;
}

ul li {
    margin: 10px 0;
    padding: 10px;
    background: #f8f9fa;
    border-left: 4px solid #667eea;
    border-radius: 4px;
    transition: all 0.3s ease;
}

ul li:hover {
    background: #e9ecef;
    transform: translateX(5px);
}

ul li a {
    color: #495057;
    text-decoration: none;
    font-weight: 500;
}

ul li a:hover {
    color: #667eea;
}

#main-list {
    list-style: none;
    padding: 0;
}

#main-list li {
    margin: 10px 0;
    padding: 15px;
    background: #f8f9fa;
    border-left: 4px solid #667eea;
    border-radius: 4px;
    transition: all 0.3s ease;
}

#main-list li:hover {
    background: #e9ecef;
    transform: translateX(5px);
}

#main-list a {
    color: #495057;
    text-decoration: none;
    font-weight: 500;
    font-size: 1.2rem;
}

#main-list a:hover {
    color: #667eea;
}

/* Alert boxy */
.alert-box {
    background-color: #fff3cd;
    border-left: 4px solid #ffc107;
    padding: 15px 20px;
    margin: 20px 0;
    border-radius: 4px;
}

.alert-box strong {
    color: #856404;
}

/* Tlačítka */
.btn-primary {
    display: inline-block;
    padding: 15px 30px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    text-decoration: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: bold;
    transition: all 0.3s ease;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(0,0,0,0.15);
}

/* Sekce */
.section {
    margin: 30px 0;
}

/* Footer */
footer {
    text-align: center;
    margin-top: 40px;
    padding: 20px;
    background: white;
    border-radius: 10px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    position: relative;
    bottom: auto;
    left: auto;
    right: auto;
}

footer a {
    color: #667eea;
    text-decoration: none;
    font-weight: 500;
    font-size: 1.1em;
    display: inline-block;
    margin: 5px 0;
}

footer a:hover {
    text-decoration: underline;
}

footer b {
    color: #495057;
}

/* Formuláře */
.form-container {
    margin: 30px 0;
}

.form-container iframe {
    border: 1px solid #dee2e6;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

/* Obsah bloky */
.obsah {
    width: 100%;
    margin: 1rem auto;
    padding: 1.5rem;
    background-color: #f8f9fa;
    border-radius: 8px;
    border-left: 4px solid #667eea;
}

.obsah ul {
    text-align: left;
    list-style: none;
}

.odstavec {
    width: 100%;
    margin: 1rem auto;
    padding: 1rem;
    background-color: #ffffff;
    border-radius: 8px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}

.definice {
    width: 100%;
    margin: 1.5rem auto;
    padding: 1.5rem;
    background-color: #fff8e1;
    border: solid 2px #ffc107;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.veta {
    width: 100%;
    margin: 1.5rem auto;
    padding: 1.5rem;
    background-color: #e3f2fd;
    border: solid 2px #667eea;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.dukaz {
    width: 100%;
    margin: 1rem auto;
    padding: 1rem;
    background-color: #f5f5f5;
    border-left: 3px solid #999;
    border-radius: 4px;
}

/* Responsivita */
@media (max-width: 768px) {
    body {
        padding: 10px;
    }

    header {
        padding: 20px 15px;
    }

    main {
        padding: 20px;
    }

    h1 {
        font-size: 1.5em;
    }

    h2 {
        font-size: 1.3em;
    }

    ul li {
        padding: 8px;
    }

    #main-list a {
        font-size: 1rem;
    }
}