:root {
    --bg-color: #f3f4f6;
    --panel-bg: #ffffff;
    --text-primary: #1f2937;
    --primary-color: #2563eb;
    --border-color: #e5e7eb;
}

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

body {
    font-family: 'Noto Sans Bengali', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
}

.app-header {
    text-align: center;
    padding: 1.5rem;
    background: var(--panel-bg);
    border-bottom: 1px solid var(--border-color);
}

.privacy-notice {
    font-size: 0.875rem;
    color: #16a34a;
    margin-top: 0.5rem;
}

.editor-container {
    display: flex;
    flex-wrap: wrap;
    max-width: 1200px;
    margin: 2rem auto;
    gap: 2rem;
    padding: 0 1rem;
}

.controls-panel {
    flex: 1;
    min-width: 300px;
    background: var(--panel-bg);
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.input-group {
    margin-bottom: 1.25rem;
}

.input-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.input-group input, .input-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-family: inherit;
}

.preview-panel {
    flex: 1.5;
    min-width: 300px;
    display: flex;
    justify-content: center;
    align-items: flex-start;
}

/* Canvas scaling for responsive preview */
.canvas-wrapper {
    width: 100%;
    max-width: 500px; /* Limits preview size */
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
}

#cardCanvas {
    width: 100%; /* Scales correctly in preview while maintaining 1080x1080 internal resolution */
    height: auto;
    display: block;
}

.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-weight: bold;
}

.btn-primary { background: var(--primary-color); color: white; }
.btn-secondary { background: #e5e7eb; color: var(--text-primary); }

/* Mobile Optimization: Preview comes first */
@media (max-width: 768px) {
    .editor-container {
        flex-direction: column-reverse;
    }
}