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

body {
    font-family: 'Segoe UI', Tahoma, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.container {
    background: white;
    border-radius: 20px;
    padding: 40px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    max-width: 600px;
    width: 100%;
}

h1 {
    text-align: center;
    color: #333;
    margin-bottom: 30px;
}

.unlock-box {
    background: #f8f9fa;
    padding: 30px;
    border-radius: 15px;
    text-align: center;
    margin-bottom: 20px;
}

.unlock-box p {
    color: #666;
    margin-bottom: 20px;
    font-size: 16px;
}

input[type="password"],
input[type="text"] {
    width: 100%;
    padding: 15px;
    border: 2px solid #ddd;
    border-radius: 10px;
    font-size: 16px;
    margin-bottom: 15px;
}

button {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    padding: 15px 40px;
    border-radius: 10px;
    font-size: 16px;
    cursor: pointer;
    transition: transform 0.2s;
}

button:hover {
    transform: translateY(-2px);
}

.error {
    background: #f8d7da;
    color: #721c24;
    padding: 15px;
    border-radius: 10px;
    margin-bottom: 20px;
}

.message {
    background: #d4edda;
    color: #155724;
    padding: 20px;
    border-radius: 10px;
    margin-bottom: 20px;
    white-space: pre-wrap;
}

.hint {
    text-align: center;
    color: #999;
    font-size: 14px;
}

.gallery-box {
    text-align: center;
}

.illustration {
    max-width: 100%;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
    margin-bottom: 20px;
}

.download-section {
    margin: 30px 0;
}

.download-btn {
    display: inline-block;
    background: #28a745;
    color: white;
    padding: 15px 40px;
    border-radius: 10px;
    text-decoration: none;
    font-size: 18px;
    transition: background 0.3s;
}

.download-btn:hover {
    background: #218838;
}

.note {
    color: #666;
    font-size: 14px;
    padding: 15px;
    background: #f8f9fa;
    border-radius: 10px;
    margin-top: 20px;
}

.logout-link {
    display: block;
    text-align: center;
    color: #667eea;
    text-decoration: none;
    margin-top: 30px;
}

.admin-section {
    background: #f8f9fa;
    padding: 25px;
    border-radius: 15px;
    margin-bottom: 20px;
}

.admin-section h2 {
    color: #333;
    margin-bottom: 20px;
}

.user-card {
    background: white;
    padding: 20px;
    border-radius: 10px;
    margin-bottom: 15px;
    border: 1px solid #ddd;
}

.user-card h3 {
    color: #667eea;
    margin-bottom: 10px;
}

.user-card p {
    color: #666;
    margin-bottom: 10px;
}

input[type="file"] {
    margin-bottom: 10px;
}