:root {
    --primary: #006a4e; /* বাংলাদেশ গ্রিন */
    --surface: #ffffff;
    --bg-main: #f4f6f8;
    --border: #e0e0e0;
    --text-main: #333333;
    --highlight: rgba(255, 235, 59, 0.35);
    --highlight-border: #fbc02d;
}

* { box-sizing: border-box; margin: 0; padding: 0; font-family: 'SolaimanLipi', sans-serif; }

body { background-color: var(--bg-main); color: var(--text-main); }

.breadcrumb {
    padding: 10px 20px;
    background: var(--surface);
    font-size: 13px;
    color: var(--primary);
    border-bottom: 1px solid var(--border);
}

.main-container {
    display: flex;
    max-width: 1200px;
    margin: 20px auto;
    gap: 20px;
    padding: 0 15px;
}

.content-area {
    flex: 7;
    background: var(--surface);
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.sidebar {
    flex: 3;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.header-titles h1 { font-size: 22px; color: var(--primary); margin-bottom: 8px; }
.header-titles p { font-size: 14px; color: #666; margin-bottom: 20px; }

.ad-placeholder {
    border: 1px dashed #ccc;
    background: #f9f9f9;
    color: #aaa;
    text-align: center;
    padding: 30px;
    margin-bottom: 20px;
    border-radius: 4px;
}

.sidebar-ad { padding: 100px 20px; }

.search-box {
    position: relative;
    margin-bottom: 15px;
}

.search-box input {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid var(--primary);
    border-radius: 6px;
    font-size: 15px;
    outline: none;
}

.clear-btn {
    position: absolute; right: 12px; top: 50%; transform: translateY(-50%);
    background: none; border: none; font-size: 20px; color: #888; cursor: pointer;
}

.answer-card {
    border: 2px solid var(--primary);
    border-radius: 6px;
    padding: 15px;
    margin-bottom: 20px;
    background: #f2fcf7;
}

.answer-card h3 { color: var(--primary); font-size: 16px; margin-bottom: 8px; }
.answer-card p { font-size: 15px; margin-bottom: 12px; line-height: 1.5; }

.btn-highlight {
    background: var(--primary); color: white; border: none;
    padding: 8px 15px; border-radius: 4px; cursor: pointer; font-size: 13px;
}

.pdf-section { border: 1px solid var(--border); border-radius: 6px; overflow: hidden; }

.pdf-controls {
    background: #eef1f6;
    display: flex; justify-content: space-between; align-items: center;
    padding: 10px 15px; border-bottom: 1px solid var(--border);
}

.btn-nav {
    background: var(--primary); color: white; border: none;
    padding: 6px 12px; border-radius: 4px; cursor: pointer; font-size: 13px;
}

/* পিডিএফ এর ওপর হাইলাইট বক্সের জাদুকরী ট্রিক */
.pdf-viewer-wrapper {
    position: relative;
    width: 100%;
    height: 600px; /* উচ্চতা ফিক্সড */
}

.pdf-viewer-wrapper iframe { border: none; }

.highlight-overlay {
    position: absolute;
    left: 5%;
    width: 90%;
    height: 80px; /* ডিফল্ট হাইলাইট উচ্চতা */
    background: var(--highlight);
    border: 2px solid var(--highlight-border);
    border-radius: 4px;
    pointer-events: none; /* মাউস ইভেন্ট ইগনোর করবে, ফলে পেজ স্ক্রল করা যাবে */
    transition: top 0.4s ease-in-out, opacity 0.3s;
    z-index: 10;
    box-shadow: 0 0 10px rgba(251, 192, 45, 0.4);
}

/* Sidebar Widgets */
.widget { border: 1px solid var(--border); border-radius: 6px; background: var(--surface); padding: 15px; }
.widget-title { font-size: 15px; color: var(--text-main); margin-bottom: 12px; border-bottom: 1px solid var(--border); padding-bottom: 8px; }
.widget-list { list-style: none; }
.widget-list li { margin-bottom: 10px; }
.widget-list a { text-decoration: none; color: #555; font-size: 14px; display: flex; align-items: center; gap: 8px; }
.widget-list a:hover { color: var(--primary); }

.faq-item { border: 1px solid var(--border); border-radius: 4px; margin-bottom: 8px; }
.faq-header { padding: 10px; font-size: 13px; cursor: pointer; display: flex; justify-content: space-between; align-items: center; background: #fafafa; }
.faq-header:hover { color: var(--primary); }
.faq-body { padding: 10px; font-size: 13px; border-top: 1px solid var(--border); background: white; }

.hidden { display: none !important; }

@media (max-width: 768px) {
    .main-container { flex-direction: column; }
}