* { box-sizing: border-box; }

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
    background: #f4f6f8;
    color: #1f2937;
    margin: 0;
    padding: 24px;
}

.container {
    max-width: 760px;
    margin: 0 auto;
    background: #fff;
    border-radius: 10px;
    box-shadow: 0 2px 6px rgba(0,0,0,0.06);
    padding: 28px 32px;
}

h1 {
    margin-top: 0;
    font-size: 24px;
    color: #111827;
}

.subtitle {
    color: #6b7280;
    margin-top: -8px;
    margin-bottom: 24px;
    font-size: 14px;
}

fieldset {
    border: 1px solid #e5e7eb;
    border-radius: 8px;
    padding: 16px 20px 20px;
    margin: 0 0 20px;
}

legend {
    padding: 0 8px;
    font-weight: 600;
    color: #374151;
}

.row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px 18px;
}

.row.three { grid-template-columns: 1fr 1fr 1fr; }
.full { grid-column: 1 / -1; }

label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    margin-bottom: 4px;
    color: #374151;
}

label .req { color: #dc2626; }

input[type=text], input[type=email], input[type=tel], input[type=url],
input[type=date], input[type=number], select, textarea {
    width: 100%;
    padding: 8px 10px;
    border: 1px solid #d1d5db;
    border-radius: 6px;
    font-size: 14px;
    background: #fff;
    color: #111827;
}

input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: #2563eb;
    box-shadow: 0 0 0 3px rgba(37,99,235,0.15);
}

textarea { min-height: 70px; resize: vertical; }

button {
    background: #2563eb;
    color: #fff;
    border: 0;
    padding: 11px 22px;
    font-size: 15px;
    font-weight: 600;
    border-radius: 6px;
    cursor: pointer;
}
button:hover { background: #1d4ed8; }

.result {
    margin-bottom: 24px;
    padding: 16px 20px;
    border-radius: 8px;
    font-size: 14px;
}
.result.accepted { background: #ecfdf5; border: 1px solid #a7f3d0; color: #065f46; }
.result.rejected { background: #fef2f2; border: 1px solid #fecaca; color: #991b1b; }
.result.duplicate { background: #fffbeb; border: 1px solid #fde68a; color: #92400e; }
.result h2 { margin: 0 0 6px; font-size: 16px; }

details {
    margin-top: 10px;
    background: #f9fafb;
    border: 1px solid #e5e7eb;
    border-radius: 6px;
    padding: 8px 12px;
}
details summary { cursor: pointer; font-weight: 500; }
pre {
    background: #0f172a;
    color: #e2e8f0;
    padding: 12px;
    border-radius: 6px;
    overflow-x: auto;
    font-size: 12px;
    margin: 8px 0 0;
}

.back-link {
    display: inline-block;
    margin-top: 8px;
    color: #2563eb;
    text-decoration: none;
}
.back-link:hover { text-decoration: underline; }

@media (max-width: 600px) {
    .row, .row.three { grid-template-columns: 1fr; }
    .container { padding: 20px; }
}