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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 40px 20px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    background: white;
    border-radius: 16px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    padding: 40px;
}

h1 {
    color: #1a202c;
    margin-bottom: 30px;
    font-size: 2.5rem;
    text-align: center;
}

h2 {
    color: #2d3748;
    margin-bottom: 20px;
    font-size: 1.5rem;
    border-bottom: 3px solid #667eea;
    padding-bottom: 10px;
}

h3 {
    color: #4a5568;
    margin: 20px 0 10px;
    font-size: 1.2rem;
}

.section {
    margin-bottom: 40px;
}

.info-box {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 20px;
    border-radius: 12px;
    margin-bottom: 30px;
    font-size: 1.1rem;
}

.form-model {
    background: #f7fafc;
    padding: 30px;
    border-radius: 12px;
    display: grid;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-weight: 600;
    color: #2d3748;
}

.form-inline {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

input, select, button {
    padding: 12px 16px;
    border: 2px solid #e2e8f0;
    border-radius: 8px;
    font-size: 1rem;
    transition: all 0.3s ease;
}

input:focus, select:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

button {
    background: #667eea;
    color: white;
    border: none;
    cursor: pointer;
    font-weight: 600;
}

button:hover {
    background: #5a67d8;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
}

.btn-danger {
    background: #e53e3e;
}

.btn-danger:hover {
    background: #c53030;
}

.btn-small {
    padding: 6px 12px;
    font-size: 0.85rem;
}

.btn-success {
    background: #48bb78;
}

.btn-success:hover {
    background: #38a169;
}

.btn-secondary {
    background: #a0aec0;
}

.btn-secondary:hover {
    background: #718096;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}

th, td {
    padding: 14px;
    text-align: left;
    border-bottom: 1px solid #e2e8f0;
}

th {
    background: #f7fafc;
    font-weight: 600;
    color: #2d3748;
}

tr:hover {
    background: #f7fafc;
}

code {
    background: #2d3748;
    color: #68d391;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 0.9rem;
}

pre {
    background: #2d3748;
    color: #e2e8f0;
    padding: 20px;
    border-radius: 8px;
    overflow-x: auto;
    margin-top: 10px;
}

pre code {
    background: none;
    padding: 0;
}