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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    min-height: 100vh;
    padding: 20px;
    color: #eee;
}

.container {
    max-width: 800px;
    margin: 0 auto;
}

header {
    text-align: center;
    margin-bottom: 40px;
}

header h1 {
    font-size: 2rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.card {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    padding: 24px;
    margin-bottom: 20px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.card h2 {
    font-size: 1.2rem;
    margin-bottom: 16px;
    color: #667eea;
}

.form-group {
    margin-bottom: 16px;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}

label {
    display: block;
    margin-bottom: 6px;
    font-size: 0.9rem;
    color: #aaa;
}

input,
select,
textarea {
    width: 100%;
    padding: 10px 12px;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 6px;
    color: #fff;
    font-size: 0.9rem;
}

input:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: #667eea;
}

textarea {
    resize: vertical;
    font-family: 'Consolas', 'Monaco', monospace;
}

.btn {
    padding: 10px 20px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 6px;
    color: #fff;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.2s;
}

.btn:hover {
    background: rgba(255, 255, 255, 0.15);
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border: none;
    width: 100%;
}

.btn-primary:hover {
    transform: translateY(-1px);
}

.preview-box {
    background: rgba(0, 0, 0, 0.3);
    border-radius: 8px;
    padding: 20px;
    text-align: center;
    margin-bottom: 16px;
}

.preview-box img {
    max-width: 100%;
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.actions {
    display: flex;
    gap: 12px;
}

.actions .btn {
    flex: 1;
}

#verifyResult,
#result {
    margin-top: 12px;
    padding: 12px;
    border-radius: 6px;
    font-size: 0.9rem;
    display: none;
}

.success {
    background: rgba(16, 185, 129, 0.2);
    border: 1px solid rgba(16, 185, 129, 0.3);
    color: #10b981;
}

.error {
    background: rgba(239, 68, 68, 0.2);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: #ef4444;
}

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