* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: #f3f4f6;
    padding: 20px;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    padding: 40px;
}

h1 {
    color: #1f2937;
    margin-bottom: 24px;
    font-size: 28px;
}

h2 {
    color: #374151;
    margin-top: 32px;
    margin-bottom: 16px;
    padding-top: 24px;
    border-top: 1px solid #e5e7eb;
    font-size: 20px;
}

.form-group {
    margin-bottom: 20px;
}

label {
    display: block;
    color: #374151;
    font-weight: 500;
    margin-bottom: 6px;
    font-size: 14px;
}

.required {
    color: #ef4444;
}

input[type="text"],
input[type="email"],
input[type="date"],
input[type="time"],
textarea {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid #d1d5db;
    border-radius: 6px;
    font-size: 14px;
    transition: border-color 0.2s;
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="date"]:focus,
input[type="time"]:focus,
textarea:focus {
    outline: none;
    border-color: #3b82f6;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

textarea {
    resize: vertical;
    min-height: 80px;
}

.radio-group,
.checkbox-group {
    margin-top: 8px;
}

.radio-option,
.checkbox-option {
    display: flex;
    align-items: center;
    margin-bottom: 8px;
}

input[type="radio"],
input[type="checkbox"] {
    margin-right: 8px;
    cursor: pointer;
}

.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.error {
    color: #ef4444;
    font-size: 13px;
    margin-top: 4px;
    display: flex;
    align-items: center;
}

.error-box {
    background: #fef2f2;
    border: 1px solid #fecaca;
    color: #991b1b;
    padding: 12px;
    border-radius: 6px;
    margin-bottom: 20px;
}

.hidden {
    display: none;
}

button {
    width: 100%;
    background: #2563eb;
    color: white;
    padding: 14px 24px;
    border: none;
    border-radius: 6px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    margin-top: 24px;
    transition: background 0.2s;
}

button:hover:not(:disabled) {
    background: #1d4ed8;
}

button:disabled {
    background: #9ca3af;
    cursor: not-allowed;
}

.success-screen {
    text-align: center;
}

.success-screen h2 {
    color: #059669;
    margin-top: 0;
    border-top: none;
    padding-top: 0;
}

.json-output {
    background: #1f2937;
    color: #10b981;
    padding: 20px;
    border-radius: 6px;
    overflow-x: auto;
    text-align: left;
    margin: 24px 0;
}

.json-output pre {
    margin: 0;
    font-family: 'Courier New', monospace;
    font-size: 13px;
    line-height: 1.5;
}

.help-text {
    color: #6b7280;
    font-size: 13px;
    margin-top: 4px;
}