Refactor appointment model and views to use a single date field; update tooltip and calendar display for improved functionality

assets/stylesheets/customer_appointments.css

@@ -23,8 +23,8 @@ table.cal td {
     background: #edf4ff;
     border: 1px solid #c5d8f3;
     border-radius: 3px;
-    font-size: 10px;
-    line-height: 1.2;
+    font-size: 0.9em; /* Matches Redmine calendar default text size */
+    line-height: 1.3;
     overflow: visible !important; /* Allows tooltip popover to extend outside */
     width: 100%;
     max-width: 100%;
@@ -100,7 +100,7 @@ table.cal td {
 .appointment-hours {
     flex-shrink: 0;
     color: #444;
-    font-size: 9px;
+    font-size: 0.85em; /* Slightly smaller than main text to keep layout balanced */
     font-weight: bold;
     margin-left: auto;
 }
@@ -108,11 +108,11 @@ table.cal td {
 /* Option B: Multi-line wrapping for details */
 .appointment-detail {
     color: #555;
-    font-size: 9px;
+    font-size: 0.9em; /* Matches calendar item body text */
     white-space: normal;
     overflow-wrap: anywhere;
     word-break: break-word;
-    margin-top: 1px;
+    margin-top: 2px;
     min-width: 0;
 }
 
@@ -203,4 +203,47 @@ table.cal td {
 .appointment-block .tip .buttons {
     margin: 0;
     text-align: right;
+}
+
+.calendar-badge {
+    display: inline-block;
+    width: 38px;
+    border: 1px solid #b8c0c8;
+    border-radius: 4px;
+    overflow: hidden;
+    text-align: center;
+    vertical-align: middle;
+    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
+    margin-right: 8px;
+    line-height: 1;
+    background: #fff;
+}
+
+.calendar-badge .month {
+    background-color: #c22b2b; /* Redmine primary red tone */
+    color: #ffffff;
+    font-size: 9px;
+    font-weight: bold;
+    padding: 3px 0 2px 0;
+    text-transform: uppercase;
+    letter-spacing: 0.5px;
+}
+
+.calendar-badge .day {
+    color: #333333;
+    font-size: 16px;
+    font-weight: bold;
+    padding: 4px 0 3px 0;
+}
+
+.appointment-title {
+    vertical-align: middle;
+}
+
+.appointment-dates {
+    font-size: 70%;
+    color: #666;
+    margin-left: 8px;
+    font-weight: normal;
+    vertical-align: middle;
 }