body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f4f4f9;
    margin: 0;
    padding: 0;
    color: #333;
}

/* Login Styles */
.login-container {
    max-width: 400px;
    margin: 100px auto;
    padding: 2rem;
    background: white;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.login-container h2 {
    text-align: center;
    margin-bottom: 1.5rem;
    color: #2c3e50;
}

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.form-group input {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    box-sizing: border-box;
}

button {
    width: 100%;
    padding: 0.75rem;
    background-color: #3498db;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1rem;
    transition: background 0.3s;
}

button:hover {
    background-color: #2980b9;
}

/* Dashboard Styles */
nav {
    background-color: #2c3e50;
    color: white;
    padding: 1rem 0;
    margin-bottom: 2rem;
}

.nav-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-content h1 {
    margin: 0;
    font-size: 1.5rem;
}

.btn-logout {
    color: white;
    text-decoration: none;
    padding: 0.5rem 1rem;
    border: 1px solid rgba(255,255,255,0.3);
    border-radius: 4px;
}

.btn-logout:hover {
    background-color: rgba(255,255,255,0.1);
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 1rem;
}

.code-card {
    background: white;
    border-radius: 8px;
    padding: 1.5rem;
    margin-bottom: 1rem;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
    border-left: 4px solid #3498db;
}

.code-header {
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
    color: #7f8c8d;
}

.code-body pre {
    background-color: #f8f9fa;
    padding: 1rem;
    border-radius: 4px;
    white-space: pre-wrap;
    word-wrap: break-word;
    margin: 0;
    font-family: 'Consolas', monospace;
    color: #2c3e50;
}

.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 2rem 0;
    gap: 1rem;
}

.btn-page {
    padding: 0.5rem 1rem;
    background-color: white;
    border: 1px solid #ddd;
    text-decoration: none;
    color: #333;
    border-radius: 4px;
}

.btn-page:hover {
    background-color: #f1f1f1;
}

.alert {
    padding: 1rem;
    border-radius: 4px;
    margin-bottom: 1rem;
}

.alert.error {
    background-color: #fee2e2;
    color: #dc2626;
    border: 1px solid #fecaca;
}

.no-data {
    text-align: center;
    color: #7f8c8d;
    margin-top: 2rem;
}