/* --- Modern UI Refresh with Preview Pane --- */

/* 1. General Layout & Typography */
:root {
    --primary-color: #0d6efd;
    --border-color: #dee2e6;
    --background-color: #f8f9fa;
    --text-color: #212529;
    --subtle-text-color: #6c757d;
}

body {
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", "Noto Sans", "Liberation Sans", Arial, sans-serif;
    background-color: var(--background-color);
    margin: 0;
    color: var(--text-color);
}

/* New Two-Column Layout */
.main-wrapper {
    display: flex;
    gap: 2rem;
    width: 100%;
    max-width: 1600px;
    margin: 0 auto;
    padding: 2rem;
    box-sizing: border-box;
}

.form-column, .preview-column {
    flex: 1;
    min-width: 0; /* Prevents flex items from overflowing */
}

.form-container, .preview-container {
    background: #fff;
    padding: 2.5rem 3rem;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    box-shadow: 0 4px 25px rgba(0, 0, 0, 0.05);
    height: 100%;
}

.logo {
    display: block;
    margin: 0 auto 1rem auto;
    max-height: 50px;
    width: auto;
}

h2 { text-align: center; font-weight: 600; color: var(--text-color); margin-top: 0; margin-bottom: 0.5rem; }
p { text-align: center; color: var(--subtle-text-color); margin-bottom: 2.5rem; }

/* 2. Modern Form Styles (Unchanged) */
.form-group { margin-bottom: 2rem; }
.form-group label { display: block; margin-bottom: 0.75rem; font-weight: 500; font-size: 0.9rem; color: var(--text-color); }
input[type="text"], input[type="password"], textarea { width: 100%; padding: 0.8rem 0; border: none; border-bottom: 2px solid #ccc; box-sizing: border-box; font-size: 1rem; background-color: transparent; transition: border-color 0.2s ease-in-out; }
input[type="text"]:focus, input[type="password"]:focus, textarea:focus { outline: none; border-bottom-color: var(--primary-color); }
textarea { resize: vertical; min-height: 120px; }
button[type="submit"] { width: 100%; padding: 0.9rem; background-color: var(--primary-color); border: none; border-radius: 8px; color: white; font-size: 1rem; font-weight: 600; cursor: pointer; transition: background-color 0.2s, transform 0.1s; }
button[type="submit"]:hover { background-color: #0b5ed7; }
button[type="submit"]:active { transform: scale(0.99); }

/* 3. Category Scrollable Box (Unchanged) */
.category-scroll-container { max-height: 160px; overflow-y: auto; border: 1px solid var(--border-color); padding: 1rem; border-radius: 8px; background-color: var(--background-color); }
.category-scroll-container::-webkit-scrollbar { width: 6px; }
.category-scroll-container::-webkit-scrollbar-track { background: transparent; }
.category-scroll-container::-webkit-scrollbar-thumb { background: #ccc; border-radius: 3px; }
.category-scroll-container::-webkit-scrollbar-thumb:hover { background: #999; }
.checkbox-group { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 0.75rem; }
.checkbox-item { display: flex; align-items: center; position: relative; }
.checkbox-item input[type="checkbox"] { opacity: 0; position: absolute; width: 100%; height: 100%; cursor: pointer; }
.checkbox-item label { margin-bottom: 0; font-weight: normal; display: flex; align-items: center; cursor: pointer; }
.checkbox-item label::before { content: ''; width: 18px; height: 18px; border: 2px solid var(--border-color); border-radius: 4px; margin-right: 0.75rem; transition: all 0.2s; }
.checkbox-item input[type="checkbox"]:checked + label::before { background-color: var(--primary-color); border-color: var(--primary-color); }
.checkbox-item input[type="checkbox"]:checked + label::after { content: ''; position: absolute; left: 5px; top: 50%; transform: translateY(-50%) rotate(45deg); width: 5px; height: 10px; border: solid white; border-width: 0 2px 2px 0; }

/* 4. Preview Pane Styles (NEW) */
.preview-header {
    text-align: center;
    font-weight: 500;
    color: var(--subtle-text-color);
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 1rem;
    margin-bottom: 1.5rem;
}

.preview-image-container {
    width: 100%;
    margin-bottom: 2rem;
    border-radius: 8px;
    overflow: hidden;
    background-color: var(--background-color);
    border: 1px solid var(--border-color);
}

#preview-image {
    width: 100%;
    height: auto;
    display: block;
    aspect-ratio: 16 / 9;
    object-fit: cover;
}

#preview-title {
    font-size: 2.5rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    word-wrap: break-word;
}

#preview-body {
    font-size: 1.1rem;
    line-height: 1.7;
    color: #495057;
    word-wrap: break-word;
}

/* 5. Responsive Design */
@media (max-width: 1200px) {
    .main-wrapper {
        flex-direction: column;
    }
}

/* 6. Messages & Links (Unchanged) */
.logout-link { position: absolute; top: 1.5rem; right: 1.5rem; text-decoration: none; color: var(--subtle-text-color); font-size: 0.9rem; }
.logout-link:hover { color: var(--primary-color); }
.message { text-align: center; padding: 0.75rem; margin-top: 1rem; border-radius: 6px; display: none; }
#form-message:not(:empty) { display: block; }
.message.error { background-color: #f8d7da; color: #842029; }
.message.success { background-color: #d1e7dd; color: #0f5132; }
.message.info { background-color: #cff4fc; color: #055160; }