/* ==========================================================================
   Source Management & Home Views
   ========================================================================== */

/* ===== Home: Source Cards ===== */
.learning-home-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-lg);
    font-family: var(--font-family-content);
}

.learning-home-header h2 {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--text-primary);
}

.learning-sources-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(min(280px, 100%), 1fr));
    gap: var(--space-md);
}

.learning-source-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    padding-bottom: 52px;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: var(--shadow-card);
    position: relative;
    overflow: visible;
}

.learning-source-card:hover {
    border-color: var(--accent-blue);
    transform: translateY(-2px);
    box-shadow: var(--shadow-card-hover);
}

.learning-source-card-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-xs);
}

.learning-source-card-meta {
    font-size: var(--font-size-md);
    color: var(--text-muted);
    margin-bottom: var(--space-sm);
}

.learning-source-card-size {
    margin-left: var(--space-sm);
    opacity: 0.75;
}

/* Card with background image: horizontal layout */
.learning-source-card--with-image {
    display: flex;
    gap: var(--space-md);
    padding: 0;
    padding-bottom: 52px;
    overflow: visible;
}

.learning-source-card-image {
    width: 100px;
    min-height: 120px;
    flex-shrink: 0;
    background-size: cover;
    background-position: center;
    background-color: var(--bg-tertiary, #2a2a40);
    border-radius: var(--radius-lg) 0 0 0;
}

.learning-source-card--with-image .learning-source-actions {
    left: var(--space-md);
}

.learning-source-card--with-image .learning-source-card-body {
    flex: 1;
    padding: var(--space-lg) var(--space-lg) var(--space-lg) 0;
    min-width: 0;
}

.learning-source-card:not(.learning-source-card--with-image) .learning-source-card-body {
    /* No image — keep normal padding from card */
}

.learning-source-card-desc {
    font-size: var(--font-size-md);
    color: var(--text-secondary);
    line-height: 1.4;
    margin-bottom: var(--space-sm);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.learning-source-card-progress {
    margin-top: var(--space-sm);
}

/* ===== Status Badge ===== */
.learning-source-status {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: var(--font-size-sm);
    font-weight: 600;
    padding: 2px 8px;
    border-radius: var(--radius-full);
}

.learning-source-status--ready {
    color: var(--accent-green);
    background: var(--accent-green-bg);
}

.learning-source-status--syncing {
    color: var(--accent-blue);
    background: var(--accent-blue-bg);
}

.learning-source-status--update {
    color: var(--accent-amber);
    background: rgba(245, 158, 11, 0.1);
}

.learning-source-status--error {
    color: var(--accent-red);
    background: var(--accent-red-bg);
}

/* ===== Online Indicator & Pending Badge ===== */
.source-online-dot {
    position: absolute;
    top: 10px;
    right: 10px;
    display: block;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    border: 2px solid var(--bg-secondary);
    z-index: 2;
}

.source-online-dot--online {
    background: var(--accent-green, #27ae60);
}

.source-online-dot--offline {
    background: var(--text-muted, #b1a7a7);
}

.source-pending-reports {
    font-size: var(--font-size-sm-md);
    color: var(--accent-amber, #e6a055);
    margin-left: var(--space-sm, 8px);
}

.source-pending-reports:empty {
    display: none;
}

/* ===== Empty State ===== */
.learning-empty-state {
    text-align: center;
    padding: var(--space-2xl) var(--space-lg);
    color: var(--text-muted);
}

.learning-empty-state h3 {
    font-size: var(--font-size-xl);
    color: var(--text-secondary);
    margin-bottom: var(--space-sm);
}

.learning-empty-state p {
    font-size: var(--font-size-base);
    margin-bottom: var(--space-lg);
}

/* ===== Add Source View ===== */
.learning-add-source {
    max-width: 500px;
    margin: 0 auto;
    padding: var(--space-xl) 0;
}

.learning-add-source h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-md);
}

.learning-add-source-input {
    display: flex;
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
}

.learning-add-source-input input {
    flex: 1;
    padding: 10px 14px;
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    outline: none;
    transition: border-color 0.2s;
}

.learning-add-source-input input:focus {
    border-color: var(--accent-blue);
}

.learning-add-source-error {
    color: var(--accent-red);
    font-size: var(--font-size-md-lg);
    margin-top: var(--space-sm);
}

.learning-add-source-loading {
    color: var(--text-muted);
    font-size: var(--font-size-md-lg);
    margin-top: var(--space-sm);
}

.learning-add-source-predefined {
    margin-bottom: var(--space-md);
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.learning-add-source-predefined h4 {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin: 0;
}

.learning-add-source-predefined-btn {
    width: 100%;
    padding: 10px 14px;
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    text-align: left;
    cursor: pointer;
    transition: border-color 0.2s, background 0.2s;
    word-break: break-all;
}

.learning-add-source-predefined-btn:hover {
    border-color: var(--accent-blue);
    background: var(--bg-tertiary, var(--bg-secondary));
}

.learning-add-source-predefined-btn:focus {
    outline: 2px solid var(--accent-blue);
    outline-offset: 2px;
}

/* ===== Tags Row ===== */
.learning-source-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    margin-top: var(--space-sm);
    align-items: center;
}

.learning-tag {
    display: inline-flex;
    align-items: center;
    gap: 3px;
    font-size: var(--font-size-xs);
    font-weight: 600;
    padding: 2px 8px;
    border-radius: var(--radius-full);
    color: #fff;
    cursor: pointer;
    transition: opacity 0.15s;
    user-select: none;
    line-height: 1.4;
}

.learning-tag:hover {
    opacity: 0.8;
}

.learning-tag-add {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    font-size: var(--font-size-md);
    font-weight: 600;
    color: var(--text-muted);
    background: none;
    border: 1.5px dashed var(--border-color);
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: border-color 0.15s, color 0.15s;
    padding: 0;
    line-height: 1;
}

.learning-tag-add:hover {
    border-color: var(--accent-blue);
    color: var(--accent-blue);
}

/* ===== Tag Modal ===== */
.tag-modal-input-row {
    display: flex;
    gap: var(--space-sm);
}

.tag-modal-input-row input {
    flex: 1;
    padding: 8px 12px;
    background: var(--bg-primary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    outline: none;
    transition: border-color 0.2s;
}

.tag-modal-input-row input:focus {
    border-color: var(--accent-blue);
}

.tag-modal-existing {
    margin-top: var(--space-md);
}

.tag-modal-existing-label {
    font-size: var(--font-size-sm-md);
    font-weight: 600;
    color: var(--text-muted);
    margin-bottom: var(--space-xs);
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.tag-modal-existing-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.tag-modal-existing-tags .learning-tag {
    font-size: var(--font-size-sm-md);
    padding: 3px 10px;
}

/* ===== Home Filter Bar ===== */
.learning-home-filter-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    align-items: center;
    padding: var(--space-sm) 0;
    margin-bottom: var(--space-sm);
}

.learning-btn-icon.active {
    color: var(--accent-blue);
    background: var(--accent-blue-bg);
}

/* ===== Free Mode Toggle on Source Card ===== */
.learning-source-free-toggle {
    display: flex;
    align-items: center;
    gap: 6px;
    cursor: pointer;
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    z-index: 1;
    margin-left: auto;
}

.learning-source-free-toggle input {
    display: none;
}

.learning-source-free-switch {
    width: 32px;
    height: 18px;
    background: var(--border-color);
    border-radius: 9px;
    position: relative;
    transition: background 0.2s;
}

.learning-source-free-switch::after {
    content: '';
    position: absolute;
    top: 2px;
    left: 2px;
    width: 14px;
    height: 14px;
    background: #fff;
    border-radius: 50%;
    transition: transform 0.2s;
}

.learning-source-free-toggle input:checked + .learning-source-free-switch {
    background: var(--accent-blue, #4361ee);
}

.learning-source-free-toggle input:checked + .learning-source-free-switch::after {
    transform: translateX(14px);
}

.learning-source-free-label {
    user-select: none;
}

/* ===== Source Settings ===== */
.learning-source-actions {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    flex-wrap: wrap;
    position: absolute;
    bottom: var(--space-sm);
    left: var(--space-lg);
    right: var(--space-lg);
}

/* ===== Source Metadata (Map Header) ===== */
.learning-source-meta {
    padding: var(--space-sm) 0 var(--space-md);
    margin-bottom: var(--space-sm);
    border-bottom: 1px solid var(--border-color);
}

.source-meta-description {
    font-size: var(--font-size-md-lg);
    color: var(--text-secondary);
    line-height: 1.5;
    margin-bottom: var(--space-sm);
}

.source-meta-authors {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xs) var(--space-lg);
    margin-bottom: var(--space-sm);
}

.source-meta-author {
    font-size: var(--font-size-md);
    color: var(--text-muted);
}

.source-meta-ai-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(230, 126, 34, 0.1);
    border: 1px solid rgba(230, 126, 34, 0.25);
    color: var(--accent-amber, #e6a055);
    border-radius: var(--radius-sm, 4px);
    padding: 4px 10px;
    font-size: var(--font-size-sm-md);
}

.source-meta-ai-badge svg {
    flex-shrink: 0;
}

.source-meta-ai-sources {
    color: var(--text-muted);
    margin-left: 2px;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
    .learning-sources-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .learning-source-card {
        padding: var(--space-md);
        padding-bottom: 48px;
    }

    .learning-source-card--with-image {
        flex-direction: column;
        padding: 0;
        padding-bottom: 48px;
    }

    .learning-source-card-image {
        width: 100%;
        min-height: 80px;
        max-height: 120px;
        border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    }

    .learning-source-card--with-image .learning-source-card-body {
        padding: var(--space-md);
    }

    .learning-source-card--with-image .learning-source-actions {
        left: var(--space-md);
    }
}