/* =============================================================================
   PEPTIDE PRIMERS STYLES - Sidebar Layout (2+10)
   Matching People Directory pattern
   ============================================================================= */

/* Sidebar Column */
.primer-sidebar-col {
    padding: 0;
}

.primer-sidebar {
    padding: 1rem;
}

/* Sidebar Navigation */
.primer-nav-sidebar {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.primer-nav-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 0.875rem 0.5rem;
    background: white;
    border: 2px solid #dee2e6;
    border-radius: 6px;
    text-decoration: none;
    color: var(--aps-blue);
    transition: all 0.2s ease;
    text-align: center;
}

.primer-nav-btn:hover {
    background: #e9ecef;
    border-color: var(--aps-blue);
    color: var(--aps-blue);
    text-decoration: none;
}

.primer-nav-btn.active {
    background: var(--aps-blue);
    border-color: var(--aps-blue);
    color: white;
}

.primer-nav-btn.back-link {
    flex-direction: row;
    justify-content: center;
    gap: 0.25rem;
    background: transparent;
    border-color: transparent;
    color: #6c757d;
    padding: 0.5rem;
}

.primer-nav-btn.back-link:hover {
    background: #f8f9fa;
    border-color: transparent;
    color: var(--aps-blue);
}

.primer-nav-btn .nav-label {
    font-size: 0.8rem;
    font-weight: 600;
    line-height: 1.2;
}

/* Main Content Column */
.primer-main-col {
    padding: 0;
}

/* Header Section */
.primer-header {
    padding: 1.5rem 1.5rem 1rem;
}

.primer-intro {
    font-size: 1.1rem;
    color: #555;
    line-height: 1.6;
    margin-top: 0.5rem;
}

/* Content Area */
.primer-content {
    padding: 0 1.5rem 2rem;
}

/* Tab Panes - show/hide */
.primer-tab-pane {
    display: none;
}

.primer-tab-pane.active {
    display: block;
}

/* Section Header */
.primer-section-header {
    font-weight: 600;
    font-size: 1.3em;
    margin-top: 1.5em;
    margin-bottom: 0.75em;
    padding-left: 0.5rem;
    border-left: 4px solid var(--aps-orange);
    line-height: 1;
    letter-spacing: 0.02em;
    color: var(--aps-blue);
}

/* Remove top margin from first section header */
.primer-body .primer-section-header:first-child,
.primer-tab-pane > .primer-section-header:first-of-type {
    margin-top: 0;
}

/* Primer Body Content */
.primer-body {
    line-height: 1.7;
    color: var(--aps-text);
}

.primer-body img {
    max-width: 100%;
    height: auto;
    border-radius: 4px;
    margin: 1rem 0;
}

.primer-body h3,
.primer-body h4 {
    color: var(--aps-blue);
    margin-top: 2rem;
    margin-bottom: 1rem;
}

.primer-body p {
    margin-bottom: 1rem;
}

.primer-body ul,
.primer-body ol {
    margin-bottom: 1rem;
    padding-left: 1.5rem;
    font-size: inherit;
    line-height: 1.7;
    color: var(--aps-text);
}

.primer-body li {
    margin-bottom: 0.5rem;
    font-size: inherit;
    line-height: inherit;
    color: inherit;
}

/* Disclaimer/Safety Box */
.disclaimer-box {
    background-color: #fff3cd;
    border: 1px solid #ffc107;
    border-left: 4px solid #ffc107;
    padding: 15px 20px;
    margin-bottom: 20px;
    border-radius: 4px;
}

.disclaimer-box p:last-child {
    margin-bottom: 0;
}

/* Video Container */
.video-container {
    position: relative;
    padding-bottom: 56.25%;
    height: 0;
    overflow: hidden;
    margin: 20px 0;
    border-radius: 4px;
}

.video-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

/* Video Toggle Buttons */
.video-toggle {
    margin-bottom: 15px;
}

.video-toggle summary {
    display: inline-block;
    padding: 6px 12px;
    font-size: 0.875rem;
    border: 2px solid var(--aps-green);
    border-radius: 4px;
    background-color: transparent;
    color: var(--aps-green);
    cursor: pointer;
    transition: all 0.2s ease;
}

.video-toggle summary:hover {
    background-color: var(--aps-green);
    color: white;
}

.video-toggle[open] summary {
    background-color: var(--aps-green);
    color: white;
    margin-bottom: 10px;
}

/* Tab Navigation (bottom of each pane) */
.primer-tab-nav {
    display: flex;
    justify-content: space-between;
    margin-top: 3rem;
    padding-top: 1.5rem;
    border-top: 1px solid #dee2e6;
}

/* Citations */
.citation {
    font-size: 0.9em;
    color: #666;
    padding-left: 20px;
    text-indent: -20px;
    margin-bottom: 8px;
}

/* =============================================================================
   MOBILE STYLES
   ============================================================================= */

@media (max-width: 991.98px) {
    /* On mobile, sidebar becomes horizontal scroll */
    .primer-sidebar-col {
        border-bottom: 1px solid #dee2e6;
    }

    .primer-sidebar {
        padding: 0.75rem 1rem;
    }

    .primer-nav-sidebar {
        flex-direction: row;
        overflow-x: auto;
        gap: 0.5rem;
        padding-bottom: 0.25rem;
        -webkit-overflow-scrolling: touch;
    }

    .primer-nav-sidebar hr {
        display: none;
    }

    .primer-nav-btn {
        flex-direction: row;
        gap: 0.5rem;
        padding: 0.5rem 1rem;
        white-space: nowrap;
        min-width: auto;
    }

    .primer-nav-btn.back-link {
        order: -1;
        padding: 0.5rem 0.75rem;
    }

    .primer-nav-btn .nav-label {
        font-size: 0.85rem;
    }

    .primer-header {
        padding: 1rem;
    }

    .primer-content {
        padding: 0 1rem 1.5rem;
    }
}

@media (max-width: 575.98px) {
    .primer-nav-btn {
        padding: 0.5rem 0.75rem;
    }

    .primer-nav-btn .nav-label {
        font-size: 0.8rem;
    }

    .primer-tab-nav {
        flex-direction: column;
        gap: 0.75rem;
    }

    .primer-tab-nav .btn {
        width: 100%;
    }
}