/* main.css */
:root {
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --accent-color: #e74c3c;
    --light-color: #ecf0f1;
    --dark-color: #34495e;
    --success-color: #27ae60;
    --warning-color: #f39c12;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f5f7fa;
    color: #333;
    line-height: 1.6;
}

/* Hlavička */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: var(--primary-color);
    color: white;
    padding: 10px 20px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.header-left h1 {
    font-size: 1.5rem;
    margin-bottom: 5px;
}

.company-name {
    font-size: 1.2rem;
    font-weight: bold;
    color: var(--light-color);
}

.header-center {
    display: flex;
    gap: 20px;
}

.period-selector select,
.company-switcher select {
    padding: 8px 12px;
    border-radius: 4px;
    border: none;
    background-color: white;
    color: var(--dark-color);
    font-size: 0.9rem;
    min-width: 200px;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 15px;
}

.btn-logout {
    padding: 6px 12px;
    background-color: var(--accent-color);
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.9rem;
}

.btn-logout:hover {
    background-color: #c0392b;
}

/* Hlavní navigace */
.main-nav {
    background-color: var(--dark-color);
    padding: 0 20px;
}

.nav-level-1 {
    display: flex;
    list-style: none;
}

.nav-level-1 > li {
    position: relative;
}

.nav-level-1 > li > a {
    display: block;
    padding: 15px 20px;
    color: white;
    text-decoration: none;
    font-weight: 500;
    transition: background-color 0.3s;
}

.nav-level-1 > li > a:hover {
    background-color: rgba(255,255,255,0.1);
}

/* Submenu */
.nav-level-2,
.nav-level-3 {
    display: none;
    position: absolute;
    background-color: white;
    min-width: 220px;
    box-shadow: 0 8px 16px rgba(0,0,0,0.1);
    border-radius: 0 0 4px 4px;
    z-index: 1000;
    list-style: none;
}

.nav-level-2 {
    top: 100%;
    left: 0;
}

.nav-level-3 {
    top: 0;
    left: 100%;
}

.has-submenu:hover > ul {
    display: block;
}

.nav-level-2 li,
.nav-level-3 li {
    position: relative;
}

.nav-level-2 a,
.nav-level-3 a {
    display: block;
    padding: 12px 20px;
    color: var(--dark-color);
    text-decoration: none;
    border-bottom: 1px solid #eee;
    transition: background-color 0.2s;
}

.nav-level-2 a:hover,
.nav-level-3 a:hover {
    background-color: #f8f9fa;
    color: var(--secondary-color);
}

/* Obsah */
.content {
    padding: 20px;
    min-height: calc(100vh - 160px);
}

/* Patička */
.footer {
    background-color: var(--primary-color);
    color: white;
    text-align: center;
    padding: 15px;
    font-size: 0.9rem;
}

/* Formuláře a tabulky */
.form-group {
    margin-bottom: 15px;
}

.form-control {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 1rem;
}

.btn {
    padding: 10px 20px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1rem;
    transition: background-color 0.3s;
}

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

.btn-primary:hover {
    background-color: #2980b9;
}

.table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
    background-color: white;
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
}

.table th {
    background-color: var(--light-color);
    padding: 12px;
    text-align: left;
    font-weight: 600;
    border-bottom: 2px solid #ddd;
}

.table td {
    padding: 10px 12px;
    border-bottom: 1px solid #eee;
}

.table tr:hover {
    background-color: #f9f9f9;
}

/* Responsivní design */
@media (max-width: 1024px) {
    .header {
        flex-direction: column;
        gap: 10px;
        text-align: center;
    }
    
    .header-center {
        flex-direction: column;
        gap: 10px;
    }
    
    .nav-level-1 {
        flex-wrap: wrap;
    }
}

@media (max-width: 768px) {
    .nav-level-1 {
        flex-direction: column;
    }
    
    .nav-level-2,
    .nav-level-3 {
        position: static;
        box-shadow: none;
        width: 100%;
    }
    
    .has-submenu:hover > ul {
        display: block;
        position: static;
    }
    
    .nav-level-3 {
        margin-left: 20px;
    }
}