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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: #f5f5f5;
    min-height: 100vh;
    padding: 2rem;
}

.container {
    display: grid;
    grid-template-columns: 6fr 3fr;
    gap: 2rem;
    max-width: 1400px;
    margin: 0 auto;
    align-items: start;
}

.main-column {
    background: white;
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.sidebar {
    background: white;
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    max-height: calc(100vh - 4rem);
    overflow-y: auto;
}

h1 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: #333;
}

h2 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    color: #333;
}

h3 {
    font-size: 1rem;
    margin-bottom: 0.5rem;
    color: #555;
    margin-top: 1.5rem;
}

p {
    color: #666;
    line-height: 1.6;
    margin-bottom: 1rem;
}

.drop-zone {
    border: 2px dashed #ccc;
    border-radius: 8px;
    padding: 3rem;
    text-align: center;
    transition: all 0.3s ease;
    cursor: pointer;
    margin-bottom: 1.5rem;
}

.drop-zone:hover,
.drop-zone.dragover {
    border-color: #007bff;
    background: #f8f9fa;
}

.drop-zone input {
    display: none;
}

.drop-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.btn {
    background: #007bff;
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 6px;
    font-size: 1rem;
    cursor: pointer;
    transition: background 0.2s;
}

.btn:hover {
    background: #0056b3;
}

.btn:disabled {
    background: #ccc;
    cursor: not-allowed;
}

.status {
    margin-top: 1rem;
    padding: 1rem;
    border-radius: 6px;
    display: none;
}

.status.success {
    background: #d4edda;
    color: #155724;
    display: block;
}

.status.error {
    background: #f8d7da;
    color: #721c24;
    display: block;
}

.status.processing {
    background: #fff3cd;
    color: #856404;
    display: block;
}

.file-info {
    margin-top: 1rem;
    padding: 1rem;
    background: #f8f9fa;
    border-radius: 6px;
}

.file-info strong {
    display: block;
    margin-bottom: 0.5rem;
}

.guide-image {
    width: 100%;
    /* height: 200px; */
    background: #e9ecef;
    border-radius: 6px;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #6c757d;
}

ul {
    color: #666;
    line-height: 1.8;
    margin-left: 1.5rem;
    margin-bottom: 1rem;
}

.information {
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid #eee;
    text-align: center;
}

.information p {
    margin-bottom: 1rem;
}

.donate-btn {
    display: inline-block;
    background: #ff6b35;
    color: white;
    text-decoration: none;
    padding: 0.75rem 1.5rem;
    border-radius: 6px;
    font-weight: 500;
    transition: background 0.2s;
}

.donate-btn:hover {
    background: #e55a2b;
}

.donate-btn.github {
    background: #333;
}

.donate-btn.github:hover {
    background: #555;
}

.donation-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.social-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.social-btn {
    display: inline-block;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 500;
    transition: background 0.2s;
}

.social-btn.github {
    background: #333;
    color: white;
}

.social-btn.github:hover {
    background: #555;
}

.social-btn.twitter {
    background: #1da1f2;
    color: white;
}

.social-btn.twitter:hover {
    background: #0d8ddb;
}

span {
    font-family: 'SF Mono', Monaco, 'Courier New', monospace;
    background: #f0f0f0;
    padding: 0.15rem 0.4rem;
    border-radius: 4px;
    font-size: 0.9em;
    color: #c7254e;
    white-space: nowrap;
}