* {
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    color: #222;
    background: #fafafa;
    margin: 0;
    padding: 0;
}

.page {
    max-width: 600px;
    margin: 0 auto;
    padding: 2rem;
}

.page-center {
    text-align: center;
}

h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: #444;
}

.page-center h1 {
    margin-bottom: 0.5rem;
}

p {
    font-size: 1.1rem;
    color: #666;
}

.form-group {
    margin-bottom: 1.5rem;
}

label {
    display: block;
    margin-bottom: 0.5rem;
    color: #444;
    font-weight: 500;
}

input[type="url"] {
    width: 100%;
    padding: 0.75rem;
    font-size: 1rem;
    border: 1px solid #ddd;
    border-radius: 4px;
}

input[type="url"]:focus {
    outline: none;
    border-color: #444;
}

button {
    width: 100%;
    padding: 0.75rem;
    font-size: 1rem;
    background-color: #444;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-weight: 500;
}

button:hover {
    background-color: #333;
}

button:disabled {
    background-color: #999;
    cursor: not-allowed;
}

.result {
    margin-top: 2rem;
    padding: 1rem;
    border-radius: 4px;
    display: none;
}

.result.success {
    background-color: #e8f5e9;
    border: 1px solid #4caf50;
    color: #2e7d32;
}

.result.error {
    background-color: #ffebee;
    border: 1px solid #f44336;
    color: #c62828;
}

.result.show {
    display: block;
}

.short-url {
    word-break: break-all;
    font-weight: 500;
    margin-top: 0.5rem;
}

.short-url a {
    color: #2e7d32;
    text-decoration: none;
}

.short-url a:hover {
    text-decoration: underline;
}

.error-message {
    margin-top: 0.5rem;
}

.link-home {
    display: inline-block;
    margin-top: 1.5rem;
    color: #444;
    text-decoration: none;
    border-bottom: 1px solid #444;
}

.link-home:hover {
    color: #333;
    border-color: #333;
}