Add more visual elements to explain encryption modes

Author: jedisct1

www/assets/css/main.css

@@ -519,6 +519,148 @@ p {
     font-size: 0.9rem;
 }
 
+/* Enhanced Visual Elements for Encryption Modes */
+.mode-card {
+    border: 1px solid var(--color-border);
+    border-radius: 0.75rem;
+    padding: 1.5rem;
+    margin-bottom: 2rem;
+    background-color: white;
+    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
+    transition: transform 0.3s ease, box-shadow 0.3s ease;
+}
+
+.mode-card:hover {
+    transform: translateY(-5px);
+    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
+}
+
+.mode-card-header {
+    display: flex;
+    align-items: center;
+    margin-bottom: 1rem;
+    padding-bottom: 1rem;
+    border-bottom: 1px solid var(--color-border);
+}
+
+.mode-card-icon {
+    width: 48px;
+    height: 48px;
+    border-radius: 50%;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    margin-right: 1rem;
+    flex-shrink: 0;
+}
+
+.deterministic-icon {
+    background-color: #3b82f6;
+    color: white;
+}
+
+.nd-icon {
+    background-color: #10b981;
+    color: white;
+}
+
+.ndx-icon {
+    background-color: #8b5cf6;
+    color: white;
+}
+
+.mode-card-title {
+    margin: 0;
+    font-size: 1.25rem;
+    font-weight: 600;
+}
+
+.mode-card-subtitle {
+    margin: 0.25rem 0 0 0;
+    font-size: 0.875rem;
+    color: var(--color-text-light);
+}
+
+.feature-list {
+    display: grid;
+    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
+    gap: 1rem;
+    margin: 1.5rem 0;
+}
+
+.feature-item {
+    display: flex;
+    align-items: flex-start;
+}
+
+.feature-icon {
+    width: 24px;
+    height: 24px;
+    border-radius: 50%;
+    background-color: #f0f9ff;
+    color: #3b82f6;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    margin-right: 0.75rem;
+    flex-shrink: 0;
+}
+
+.feature-text {
+    font-size: 0.875rem;
+}
+
+.mode-comparison {
+    width: 100%;
+    border-collapse: collapse;
+    margin: 2rem 0;
+}
+
+.mode-comparison th,
+.mode-comparison td {
+    padding: 0.75rem 1rem;
+    border: 1px solid var(--color-border);
+    text-align: left;
+}
+
+.mode-comparison th {
+    background-color: #f8fafc;
+    font-weight: 600;
+}
+
+.mode-comparison tr:nth-child(even) {
+    background-color: #f8fafc;
+}
+
+.mode-comparison .check {
+    color: #10b981;
+}
+
+.mode-comparison .x {
+    color: #ef4444;
+}
+
+.mode-diagram {
+    display: flex;
+    flex-direction: column;
+    align-items: center;
+    margin: 2rem 0;
+}
+
+.mode-diagram-title {
+    font-size: 1rem;
+    font-weight: 600;
+    margin-bottom: 1rem;
+}
+
+.mode-diagram-image {
+    max-width: 100%;
+    height: auto;
+    border-radius: 0.5rem;
+    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
+}
+}
+
 .max-w-4xl {
     max-width: 56rem;
 }