/* Basis reset */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

/* Header styling */
.site-header {
    background-color: #0073e6;
    padding: 15px 0;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    width: 100%;
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 20px;
    position: relative;
}

.logo a {
    color: white;
    font-size: 1.5rem;
    font-weight: 700;
    text-decoration: none;
}

.main-nav ul {
    display: flex;
    list-style: none;
    flex-wrap: wrap;
}

.main-nav li {
    margin-left: 20px;
}

.main-nav a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    transition: opacity 0.3s ease;
    padding: 5px 8px;
    border-radius: 4px;
}

.main-nav a:hover {
    opacity: 0.8;
    background-color: rgba(255, 255, 255, 0.1);
}

/* Hamburger menu */
.hamburger-menu {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 21px;
    cursor: pointer;
    z-index: 10;
}

.hamburger-menu span {
    display: block;
    height: 3px;
    width: 100%;
    background-color: white;
    border-radius: 3px;
    transition: all 0.3s ease;
}

.hamburger-menu.active span:nth-child(1) {
    transform: translateY(9px) rotate(45deg);
}

.hamburger-menu.active span:nth-child(2) {
    opacity: 0;
}

.hamburger-menu.active span:nth-child(3) {
    transform: translateY(-9px) rotate(-45deg);
}

@media (max-width: 768px) {
    .hamburger-menu {
        display: flex;
    }
    
    .main-nav {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: #0073e6;
        box-shadow: 0 5px 10px rgba(0, 0, 0, 0.2);
        padding: 0;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease;
        z-index: 5;
    }
    
    .main-nav.active {
        max-height: 500px;
    }
    
    .main-nav ul {
        flex-direction: column;
        padding: 10px 0;
    }
    
    .main-nav li {
        margin: 0;
        width: 100%;
    }
    
    .main-nav a {
        display: block;
        padding: 12px 20px;
        text-align: left;
        border-radius: 0;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }
    
    .main-nav a:hover {
        background-color: rgba(255, 255, 255, 0.1);
    }
}

/* Body styling */
body {
    background: #f4f6f8;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    padding: 0;
    margin: 0;
}

.main-content {
    flex: 1;
    padding: 20px;
    display: flex;
    justify-content: center;
    align-items: flex-start;
}

/* Container */
.container {
    background: #fff;
    padding: 30px 40px;
    border-radius: 8px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 800px;
}

/* Titel */
h1 {
    margin-bottom: 25px;
    font-weight: 700;
    font-size: 1.8rem;
    color: #222;
    text-align: center;
}

/* Label */
label {
    display: block;
    font-weight: 600;
    margin-bottom: 8px;
    color: #444;
}

/* File input */
input[type="file"] {
    display: block;
    width: 100%;
    padding: 8px;
    border: 1px solid #bbb;
    border-radius: 5px;
    cursor: pointer;
    transition: border-color 0.2s ease;
    font-size: 1rem;
    color: #333;
}

input[type="file"]:focus,
input[type="file"]:hover {
    border-color: #0073e6;
    outline: none;
}

/* Submit button */
input[type="submit"] {
    margin-top: 25px;
    width: 100%;
    padding: 12px;
    background: #0073e6;
    color: white;
    font-weight: 700;
    border: none;
    border-radius: 6px;
    font-size: 1.1rem;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

input[type="submit"]:hover {
    background: #005bb5;
}

/* Kleine instructie tekst */
.instructions {
    font-size: 0.9rem;
    color: #666;
    margin-top: 5px;
    text-align: center;
}

/* Footer styling */
.site-footer {
    background-color: #f0f0f0;
    padding: 20px 0;
    width: 100%;
    border-top: 1px solid #ddd;
    margin-top: auto;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.footer-info {
    text-align: center;
}

.footer-info p {
    margin: 5px 0;
    color: #666;
    font-size: 0.9rem;
}

.footer-info a {
    color: #0073e6;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-info a:hover {
    color: #005bb5;
    text-decoration: underline;
}

@media (max-width: 768px) {
    .footer-info p {
        font-size: 0.8rem;
    }
    
    .container {
        padding: 20px;
    }
    
    h1 {
        font-size: 1.5rem;
    }
}