* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    font-family: Arial, Helvetica, sans-serif;
    background: #f4f6f8;
    color: #1f2937;
}

header {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 20px;
    background: #ffffff;
    border-bottom: 1px solid #e5e7eb;
}

.logo {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
    background: #111827;
    color: white;
    font-weight: bold;
}

header h1 {
    margin: 0;
    font-size: 22px;
}

header p {
    margin: 4px 0 0;
    color: #6b7280;
    font-size: 14px;
}

main {
    width: min(900px, calc(100% - 30px));
    margin: 30px auto;
}

.card {
    background: white;
    border-radius: 14px;
    padding: 24px;
    margin-bottom: 20px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
}

.card h2 {
    margin-top: 0;
}

.description {
    color: #6b7280;
}

textarea {
    width: 100%;
    min-height: 300px;
    resize: vertical;
    padding: 15px;
    border: 1px solid #d1d5db;
    border-radius: 10px;
    font-family: monospace;
    font-size: 13px;
    outline: none;
}

textarea:focus {
    border-color: #111827;
}

button {
    width: 100%;
    margin-top: 15px;
    padding: 14px;
    border: 0;
    border-radius: 10px;
    background: #111827;
    color: white;
    font-size: 15px;
    font-weight: bold;
    cursor: pointer;
}

button:hover {
    opacity: 0.9;
}

button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

#status {
    margin-top: 15px;
    padding: 12px;
    border-radius: 8px;
    display: none;
}

#status.success {
    display: block;
    background: #ecfdf5;
    color: #065f46;
}

#status.error {
    display: block;
    background: #fef2f2;
    color: #991b1b;
}

.hidden {
    display: none;
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
}

.info-grid div {
    padding: 15px;
    background: #f9fafb;
    border-radius: 10px;
}

.info-grid span {
    display: block;
    font-size: 12px;
    color: #6b7280;
    margin-bottom: 5px;
}

.info-grid strong {
    word-break: break-word;
}

footer {
    text-align: center;
    padding: 30px;
    color: #6b7280;
    font-size: 13px;
}

@media (max-width: 600px) {
    .info-grid {
        grid-template-columns: 1fr;
    }

    .card {
        padding: 18px;
    }
}