:root {
    --bg-color: #f8f9fa;
    --card-bg: #ffffff;
    --text-color: #212529;
    --primary: #4f46e5;
    --primary-hover: #4338ca;
    --border: #e5e7eb;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    margin: 0;
    padding: 2rem;
    display: flex;
    justify-content: center;
}

.container {
    width: 100%;
    max-width: 800px;
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

header h1 {
    margin: 0 0 0.5rem 0;
    color: var(--primary);
}

header p {
    margin: 0 0 1.5rem 0;
    color: #6b7280;
}

textarea {
    width: 100%;
    height: 250px;
    padding: 1rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 1rem;
    box-sizing: border-box;
    resize: vertical;
}

.stats {
    display: flex;
    gap: 1.5rem;
    margin: 0.75rem 0 1.5rem 0;
    color: #4b5563;
}

.actions {
    display: flex;
    gap: 0.75rem;
}

button {
    background-color: var(--primary);
    color: white;
    border: none;
    padding: 0.75rem 1.25rem;
    border-radius: 6px;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.2s;
}

button:hover {
    background-color: var(--primary-hover);
}

button.secondary {
    background-color: #e5e7eb;
    color: #374151;
}

button.secondary:hover {
    background-color: #d1d5db;
}

button.danger {
    background-color: #fee2e2;
    color: #dc2626;
}

button.danger:hover {
    background-color: #fecaca;
}

/* Offline Info Box & Download Button */
.offline-info {
    margin-top: 2rem;
    padding: 1.25rem;
    background-color: var(--bg-color);
    border: 1px dashed var(--border);
    border-radius: 8px;
}

.offline-info h3 {
    margin: 0 0 0.5rem 0;
    font-size: 1.1rem;
    color: var(--text-color);
}

.offline-info p {
    margin: 0 0 1rem 0;
    font-size: 0.9rem;
    color: #4b5563;
    line-height: 1.4;
}

.download-btn {
    display: inline-block;
    background-color: #10b981;
    color: white;
    text-decoration: none;
    padding: 0.6rem 1rem;
    border-radius: 6px;
    font-weight: 600;
    font-size: 0.9rem;
    transition: background-color 0.2s;
}

.download-btn:hover {
    background-color: #059669;
}