/* Markdown Content Styles for Lesson Content */
.markdown-content {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: var(--theme-content);
}

.markdown-content h1 {
    color: var(--theme-content);
    font-size: 28px;
    margin-bottom: 15px;
    line-height: 1.3;
    margin-top: 30px;
}

.markdown-content h1:first-child {
    margin-top: 0;
}

.markdown-content h2 {
    color: var(--theme-content-secondary);
    font-size: 24px;
    margin-top: 35px;
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--theme-border);
}

.markdown-content h3 {
    color: var(--theme-content-secondary);
    font-size: 20px;
    margin-top: 25px;
    margin-bottom: 12px;
}

.markdown-content h4 {
    color: var(--theme-content-secondary);
    font-size: 18px;
    margin-top: 20px;
    margin-bottom: 10px;
}

.markdown-content h5 {
    color: var(--theme-content-secondary);
    font-size: 16px;
    margin-top: 18px;
    margin-bottom: 8px;
}

.markdown-content h6 {
    color: var(--theme-content-secondary);
    font-size: 14px;
    margin-top: 15px;
    margin-bottom: 8px;
}

.markdown-content p {
    margin-bottom: 15px;
    color: var(--theme-content-muted);
}

.markdown-content ul {
    margin-left: 20px;
    margin-bottom: 15px;
}

.markdown-content ol {
    margin-left: 20px;
    margin-bottom: 15px;
}

.markdown-content ul li,
.markdown-content ol li {
    margin-bottom: 8px;
    color: var(--theme-content-muted);
}

.markdown-content strong {
    color: var(--theme-content);
    font-weight: 600;
}

.markdown-content em {
    font-style: italic;
    color: var(--theme-content-muted);
}

.markdown-content blockquote {
    background-color: var(--theme-surface-sunken);
    border-left: 4px solid var(--theme-primary-600);
    padding: 15px 20px;
    margin: 20px 0;
    color: var(--theme-content-muted);
}

.markdown-content code {
    background-color: var(--theme-surface-sunken);
    padding: 2px 6px;
    border-radius: 3px;
    font-family: 'Monaco', 'Menlo', 'Consolas', monospace;
    font-size: 0.9em;
    color: #d63384;
}

.markdown-content pre {
    background-color: var(--theme-surface-sunken);
    padding: 15px;
    border-radius: 6px;
    overflow-x: auto;
    margin: 20px 0;
}

.markdown-content pre code {
    background-color: transparent;
    padding: 0;
    color: var(--theme-content);
    font-size: 0.85em;
}

.markdown-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
}

.markdown-content table th,
.markdown-content table td {
    border: 1px solid var(--theme-border);
    padding: 10px;
    text-align: left;
}

.markdown-content table th {
    background-color: var(--theme-surface-sunken);
    font-weight: 600;
    color: var(--theme-content);
}

.markdown-content table tr:nth-child(even) {
    background-color: var(--theme-surface-sunken);
}

.markdown-content hr {
    border: 0;
    height: 2px;
    background: linear-gradient(to right, var(--theme-border), var(--theme-border-strong), var(--theme-border));
    margin: 30px 0;
}

.markdown-content a {
    color: var(--theme-primary-600);
    text-decoration: none;
}

.markdown-content a:hover {
    text-decoration: underline;
}

.markdown-content img {
    max-width: 100%;
    height: auto;
    border-radius: 6px;
    margin: 20px 0;
}

/* Special box styles for common markdown patterns */
.markdown-content .info-box,
.markdown-content div[style*="background-color: #f8f9fa"] {
    background-color: var(--theme-surface-sunken);
    padding: 20px;
    border-radius: 6px;
    margin: 20px 0;
}

.markdown-content .clinical-box,
.markdown-content div[style*="background-color: #fff3cd"] {
    background-color: #fff3cd;
    border-left: 4px solid #ffc107;
    padding: 20px;
    margin: 20px 0;
}

.markdown-content .exam-box,
.markdown-content div[style*="background-color: #e7f3ff"] {
    background-color: #e7f3ff;
    border-left: 4px solid var(--theme-primary-600);
    padding: 20px;
    margin: 20px 0;
}

.markdown-content .key-takeaways,
.markdown-content div[style*="background-color: #d4edda"] {
    background-color: #d4edda;
    border-left: 4px solid #28a745;
    padding: 20px;
    margin: 20px 0;
}

/* ===== Info Panel (Global Slide-Up Panel) ===== */
.info-panel {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 35;
    pointer-events: none;
}

.info-panel-container {
    pointer-events: auto;
    background: var(--theme-surface);
    border-top: 3px solid var(--theme-panel-accent);
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.12);
    display: flex;
    flex-direction: column;
    height: 44px; /* collapsed: just tabs */
    transition: height 0.25s ease;
    overflow: hidden;
}

.info-panel-container.info-panel-expanded {
    height: 350px;
}

/* Drag Handle */
.info-panel-handle {
    display: none;
    justify-content: center;
    align-items: center;
    padding: 6px 0 2px;
    cursor: ns-resize;
    flex-shrink: 0;
    user-select: none;
    -webkit-user-select: none;
    background: var(--theme-surface-sunken);
}

.info-panel-expanded .info-panel-handle {
    display: flex;
}

.info-panel-handle-bar {
    width: 36px;
    height: 4px;
    background: var(--theme-content-subtle);
    border-radius: 2px;
}

.info-panel-handle:hover .info-panel-handle-bar {
    background: var(--theme-content-subtle);
}

/* Tab Strip */
.info-panel-tabs {
    display: flex;
    flex-shrink: 0;
    background: var(--theme-surface-sunken);
    border-bottom: 1px solid var(--theme-border);
}

.info-panel-tabs-scroll {
    display: flex;
    gap: 0;
    flex: 1;
    min-width: 0;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
}

.info-panel-tabs-scroll::-webkit-scrollbar {
    display: none;
}

.info-tab {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 10px 14px;
    font-size: 0.8125rem;
    font-weight: 500;
    white-space: nowrap;
    border: none;
    background: transparent;
    cursor: pointer;
    transition: color 0.15s, background 0.15s;
    border-bottom: 2px solid transparent;
}

.info-tab-inactive {
    color: var(--theme-content-muted);
}

.info-tab-inactive:hover {
    color: var(--theme-content);
    background: var(--theme-border);
}

.info-tab-active {
    color: var(--theme-panel-active-tab);
    border-bottom-color: var(--theme-panel-active-tab);
    background: white;
}

/* Panel Controls (fixed right, outside scroll) */
.info-panel-controls {
    display: inline-flex;
    align-items: center;
    gap: 2px;
    flex-shrink: 0;
    padding: 0 4px;
    border-left: 1px solid var(--theme-border);
    background: var(--theme-surface-sunken);
}

.info-panel-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 30px;
    height: 30px;
    flex-shrink: 0;
    border: none;
    background: transparent;
    cursor: pointer;
    color: var(--theme-content-muted);
    border-radius: 6px;
    transition: background 0.15s, color 0.15s;
}

.info-panel-btn:hover {
    background: var(--theme-surface-muted);
    color: var(--theme-content);
}

.info-panel-btn svg {
    transition: transform 0.25s ease;
}

.info-panel-expanded .info-panel-toggle-btn svg {
    transform: rotate(180deg);
}

/* Panel Body */
.info-panel-body {
    flex: 1;
    overflow-y: auto;
    padding: 0;
    min-height: 0;
    background: var(--theme-surface);
}

.info-panel-body > div {
    padding: 1rem 1.5rem;
}

@media (max-width: 767px) {
    .info-tab {
        padding: 10px 12px;
        font-size: 0.75rem;
    }

    .info-panel-body > div {
        padding: 0.75rem 1rem;
    }

    .info-panel-btn {
        width: 28px;
        height: 28px;
    }
}

@media (max-width: 520px) {
    .info-tab {
        padding: 10px 9px;
        font-size: 0.7rem;
        gap: 4px;
    }

    .info-tab svg {
        width: 14px;
        height: 14px;
    }

    .info-panel-btn {
        width: 26px;
        height: 26px;
    }

    .info-panel-controls {
        gap: 0;
        padding-right: 2px;
    }
}