* {
    box-sizing: border-box;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

body {
    margin: 0;
    background: #0b0c10;
    color: #f5f5f5;
}

.wrapper {
    max-width: 600px;
    margin: 0 auto;
    padding: 2rem 1.5rem 3rem;
}

header h1 {
    margin: 0 0 0.5rem;
    font-size: 1.9rem;
}

header p {
    margin: 0 0 1.5rem;
    color: #c5c6c7;
}

form {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-bottom: 2rem;
}

label {
    font-weight: 600;
}

textarea {
    min-height: 90px;
    padding: 0.75rem;
    border-radius: 6px;
    border: 1px solid #45a29e;
    background: #1f2833;
    color: #f5f5f5;
    resize: vertical;
}

button {
    padding: 0.75rem 1rem;
    border-radius: 6px;
    border: none;
    background: #45a29e;
    color: #0b0c10;
    font-weight: 600;
    cursor: pointer;
}

button:hover {
    background: #66fcf1;
}

#qr-section {
    text-align: center;
}

#qrcode {
    margin: 1rem auto;
    padding: 0.75rem;
    background: #fff;
    display: inline-block;
}

footer {
    margin-top: 2.5rem;
    border-top: 1px solid #1f2833;
    padding-top: 1.5rem;
    font-size: 0.9rem;
    color: #c5c6c7;
}

footer a {
    color: #66fcf1;
    text-decoration: none;
}

footer a:hover {
    text-decoration: underline;
}

.small {
    margin-top: 0.75rem;
    font-size: 0.8rem;
}

.hidden {
    display: none;
}

.mobile-note {
    display: none;
}

@media (max-width: 768px) {
    .mobile-note {
        display: block;
        text-align: center;
        margin-top: 1rem;
        color: #aaa;
        font-size: 0.9rem;
    }
}