:root {
    --bg: linear-gradient(135deg, #0f172a, #0b1220 60%);
    --card: #0f172a;
    --accent: #7c3aed;
}
* {
    box-sizing: border-box;
}
html,
body {
    height: 100%;
    margin: 0;
    font-family:
        Inter,
        system-ui,
        Segoe UI,
        Helvetica,
        Arial;
}
body {
    background: var(--bg);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 32px;
    color: #e6eef8;
}
.card {
    width: 100%;
    max-width: 720px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 14px;
    padding: 24px;
    box-shadow: 0 6px 30px rgba(2, 6, 23, 0.6);
    backdrop-filter: blur(6px);
}
.card h1 {
    margin: 0;
    font-size: 28px;
}
.lead {
    color: #a9c3df;
    margin: 6px 0 16px;
}
label {
    font-size: 12px;
    color: #9fb4d6;
}
textarea {
    width: 100%;
    height: 88px;
    padding: 10px;
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.06);
    background: rgba(255, 255, 255, 0.02);
    color: inherit;
    resize: vertical;
}
.row {
    display: flex;
    gap: 12px;
    margin-top: 12px;
}
.row > div {
    flex: 1;
}
input[type="color"] {
    width: 100%;
    height: 40px;
    border-radius: 8px;
    border: 0;
}
input[type="number"] {
    width: 100%;
    padding: 8px;
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.06);
    background: rgba(255, 255, 255, 0.02);
    color: inherit;
}
.actions {
    display: flex;
    gap: 10px;
    align-items: center;
    margin-top: 14px;
}
button,
.btn {
    background: var(--accent);
    color: white;
    padding: 10px 14px;
    border-radius: 10px;
    border: 0;
    cursor: pointer;
    text-decoration: none;
}
.btn.ghost {
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.06);
}
.preview {
    margin-top: 18px;
    display: flex;
    justify-content: center;
}
.preview img {
    max-width: 320px;
    border-radius: 8px;
    background: white;
    padding: 8px;
}