body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 20px;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    min-height: 100vh;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    background: white;
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

h1 {
    color: #f6821f;
    margin-bottom: 5px;
}

.subtitle {
    color: #666;
    font-style: italic;
    margin-bottom: 30px;
}

textarea {
    width: 95%;
    height: 120px;
    padding: 15px;
    border: 2px solid #e1e5eb;
    border-radius: 8px;
    font-size: 16px;
    margin-bottom: 20px;
    resize: vertical;
    font-family: inherit;
}

button {
    background: #f6821f;
    color: white;
    border: none;
    padding: 12px 25px;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

button:hover {
    background: #e5670c;
    transform: translateY(-2px);
}

#notes-container {
    margin-top: 40px;
    padding-top: 30px;
    border-top: 2px solid #eee;
}

.note-item {
    background: #f8f9fa;
    padding: 15px;
    margin-bottom: 15px;
    border-radius: 8px;
    border-left: 4px solid #f6821f;
}

.arch-info {
    margin-top: 40px;
    padding: 20px;
    background: #f0f7ff;
    border-radius: 10px;
}

.arch-info ul {
    list-style: none;
    padding-left: 0;
}

.arch-info li {
    padding: 8px 0;
    color: #333;
}

.ai-button {
    background: #6c63ff;
    margin-top: 10px;
}
.ai-button:hover {
    background: #554fd8;
}
#ai-summary {
    background: #f0f2ff;
    padding: 15px;
    border-radius: 8px;
    margin: 15px 0;
    border-left: 4px solid #6c63ff;
}