style: Add CSS variable fallbacks for better browser compatibility
Following LogRocket CSS best practices: - Added fallback values to 150+ CSS variable usages across 22 files - Fallbacks use light theme defaults for consistent behavior - Improves compatibility with older browsers - Example: var(--text-primary) → var(--text-primary, #1a1a1a) Variables with fallbacks: - Colors: text-primary, text-secondary, text-muted, accent-blue, etc. - Backgrounds: page-bg, paper-bg, action-bar-bg, sidebar-bg - Shadows: shadow-sm, shadow-md, shadow-lg - Borders: border-color, border-light, icon-border CSS Variables Best Practices compliance: 6/7 recommendations now followed
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@@ -24,7 +24,7 @@
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height: 80px;
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object-fit: contain;
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border-radius: 4px;
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border: 1px solid var(--icon-border);
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border: 1px solid var(--icon-border, #ddd);
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background: transparent;
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padding: 4px;
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}
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@@ -36,9 +36,9 @@
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align-items: center;
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justify-content: center;
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border-radius: 4px;
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border: 1px solid var(--icon-border);
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border: 1px solid var(--icon-border, #ddd);
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background: transparent;
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color: var(--text-light);
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color: var(--text-light, #999999);
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padding: 10px;
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}
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@@ -55,7 +55,7 @@
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font-weight: 600;
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margin: 0 0 0.3rem 0;
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line-height: 1.4;
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color: var(--text-dark);
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color: var(--text-dark, #1a1a1a);
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}
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.course-title-text {
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@@ -72,17 +72,17 @@
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.course-separator,
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.course-location,
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.course-duration {
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color: var(--text-muted);
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color: var(--text-muted, #666666);
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font-size: 0.9em;
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}
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.course-separator {
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color: var(--text-light);
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color: var(--text-light, #999999);
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}
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.course-desc {
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font-size: 0.85em;
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color: var(--text-gray);
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color: var(--text-gray, #333333);
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margin-top: 0.4rem;
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line-height: 1.4;
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text-align: justify;
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@@ -97,7 +97,7 @@
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align-items: center;
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justify-content: center;
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border-radius: 4px;
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border: 1px solid var(--icon-border);
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border: 1px solid var(--icon-border, #ddd);
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background: transparent !important;
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padding: 8px;
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}
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