:root {
    --primary: #0969da;
    --primary-dark: #0860ca;
    --secondary: #1f883d;
    --bg-light: #ffffff;
    --bg-gray: #f6f8fa;
    --border: #d1d9e0;
    --text-primary: #1f2328;
    --text-secondary: #656d76;
    --success: #1a7f37;
    --error: #d1242f;
    --shadow: rgba(140, 149, 159, 0.15);
    --code-bg: #f6f8fa;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Noto Sans', Helvetica, Arial, sans-serif;
    background-color: var(--bg-light);
    color: var(--text-primary);
    line-height: 1.5;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem;
}

header {
    text-align: center;
    margin-bottom: 3rem;
    position: relative;
}

h1 {
    font-size: 2.5rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.icon {
    font-size: 3rem;
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.subtitle {
    color: var(--text-secondary);
    font-size: 1.25rem;
}

.language-selector {
    position: absolute;
    top: 0;
    right: 0;
    display: flex;
    gap: 0.5rem;
}

.language-selector button {
    padding: 0.5rem 1rem;
    border: 1px solid var(--border);
    background: var(--bg-light);
    color: var(--text-primary);
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.875rem;
    transition: all 0.2s;
}

.language-selector button:hover {
    background: var(--bg-gray);
}

.language-selector button.active {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

.split-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-bottom: 2rem;
}

.input-panel, .preview-panel {
    background: var(--bg-light);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 1.5rem;
}

.preview-panel {
    position: sticky;
    top: 2rem;
    max-height: calc(100vh - 4rem);
    overflow-y: auto;
}

section {
    margin-bottom: 2rem;
}

h2 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.form-group {
    margin-bottom: 1rem;
}

label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-primary);
    font-size: 0.875rem;
}

input[type="text"],
textarea,
select {
    width: 100%;
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 0.875rem;
    font-family: inherit;
    transition: border-color 0.2s;
}

input[type="text"]:focus,
textarea:focus,
select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(9, 105, 218, 0.1);
}

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

.features-list {
    margin-bottom: 0.5rem;
}

.feature-item {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.feature-item input {
    flex: 1;
}

.remove-btn {
    width: 32px;
    height: 32px;
    border: 1px solid var(--border);
    background: var(--bg-light);
    color: var(--text-secondary);
    border-radius: 6px;
    cursor: pointer;
    font-size: 1.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
}

.remove-btn:hover {
    background: #ffebe9;
    color: var(--error);
    border-color: #ffebe9;
}

.add-btn {
    padding: 0.5rem 1rem;
    border: 1px solid var(--border);
    background: var(--bg-gray);
    color: var(--text-primary);
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 500;
    transition: all 0.2s;
}

.add-btn:hover {
    background: #e7ecf0;
}

.badges-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 0.5rem;
}

.badges-options label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    font-weight: normal;
}

.badges-options input[type="checkbox"] {
    width: 16px;
    height: 16px;
    cursor: pointer;
}

.generate-btn {
    width: 100%;
    padding: 0.75rem 1.5rem;
    background: var(--primary);
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    transition: all 0.2s;
}

.generate-btn:hover {
    background: var(--primary-dark);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px var(--shadow);
}

.btn-icon {
    font-size: 1.25rem;
}

.preview-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border);
}

.preview-actions {
    display: flex;
    gap: 0.5rem;
}

.action-btn {
    width: 32px;
    height: 32px;
    border: 1px solid var(--border);
    background: var(--bg-light);
    border-radius: 6px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
}

.action-btn:hover {
    background: var(--bg-gray);
}

.preview-content {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Noto Sans', Helvetica, Arial, sans-serif;
    line-height: 1.6;
}

.preview-content h1 {
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border);
}

.preview-content h2 {
    font-size: 1.5rem;
    font-weight: 600;
    margin: 2rem 0 1rem;
}

.preview-content h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin: 1.5rem 0 0.5rem;
}

.preview-content p {
    margin-bottom: 1rem;
}

.preview-content code {
    background: var(--code-bg);
    padding: 0.2em 0.4em;
    border-radius: 3px;
    font-size: 85%;
    font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
}

.preview-content pre {
    background: var(--code-bg);
    padding: 1rem;
    border-radius: 6px;
    overflow-x: auto;
    margin-bottom: 1rem;
}

.preview-content pre code {
    background: none;
    padding: 0;
}

.preview-content ul {
    padding-left: 2rem;
    margin-bottom: 1rem;
}

.preview-content li {
    margin-bottom: 0.25rem;
}

.preview-content a {
    color: var(--primary);
    text-decoration: none;
}

.preview-content a:hover {
    text-decoration: underline;
}

.preview-content img {
    margin-right: 0.5rem;
}

.placeholder {
    color: var(--text-secondary);
    text-align: center;
    padding: 3rem;
}

.templates-section {
    margin-top: 3rem;
}

.templates-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.template-card {
    padding: 1.5rem;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: var(--bg-light);
    cursor: pointer;
    transition: all 0.2s;
    text-align: left;
}

.template-card:hover {
    border-color: var(--primary);
    box-shadow: 0 4px 12px var(--shadow);
    transform: translateY(-2px);
}

.template-card h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.template-card p {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

footer {
    text-align: center;
    padding: 2rem 0;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

@media (max-width: 1024px) {
    .split-layout {
        grid-template-columns: 1fr;
    }
    
    .preview-panel {
        position: static;
        max-height: none;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }
    
    h1 {
        font-size: 2rem;
    }
    
    .language-selector {
        position: static;
        justify-content: center;
        margin-top: 1rem;
    }
    
    .templates-grid {
        grid-template-columns: 1fr;
    }
}

@media (prefers-reduced-motion: reduce) {
    * {
        animation: none !important;
        transition: none !important;
    }
}