Aesthetic improvements: cards, urgency colours, gradient strip, toggle buttons (#16)

- Conference entries now render as white cards with a subtle border,
  border-radius, and hover lift (box-shadow + translateY) for depth
- Timer colour reflects urgency: red < 7 days, amber < 30 days, green otherwise
- Top strip replaced with a blue-to-purple gradient for a modern look
- Sort buttons styled as a connected toggle group (shared border, rounded ends)
- Conf title font weight bumped to 600, border-bottom removed, blue hover colour

Author: ajithsureshtii

static/css/deadlines.css

@@ -50,8 +50,8 @@ body *::selection {
 }
 
 .top-strip {
-  background-color: #333;
-  height: 0.25em;
+  background: linear-gradient(90deg, #007bff 0%, #6610f2 100%);
+  height: 4px;
   width: 100%;
 }
 
@@ -140,9 +140,33 @@ footer {
   margin-bottom: 5px;
 }
 
+.conf {
+  background: #fff;
+  border: 1px solid #e8ecf0;
+  border-radius: 8px;
+  padding: 14px 18px 6px;
+  margin-bottom: 10px;
+  transition: box-shadow 0.18s ease, transform 0.18s ease;
+}
+
+.conf:hover {
+  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.09);
+  transform: translateY(-1px);
+}
+
+.conf hr {
+  display: none;
+}
+
 .conf-title {
-  font-size: 16px;
-  font-weight: 500;
+  font-size: 17px;
+  font-weight: 600;
+  border-bottom: none;
+  transition: color 0.15s ease;
+}
+
+.conf-title:hover {
+  color: #007bff;
 }
 
 .tagtitle {
@@ -230,6 +254,18 @@ footer {
   font-weight: 500;
 }
 
+.timer.urgent {
+  color: #dc3545;
+}
+
+.timer.warning {
+  color: #fd7e14;
+}
+
+.timer.ok {
+  color: #28a745;
+}
+
 #conf-timer {
   font-size: 72px;
   color: #444;

static/css/styles.css

@@ -17,8 +17,24 @@ h2 .evtname {
   vertical-align: middle;
 }
 
+.sort-btn {
+  border-radius: 0 !important;
+  margin-left: -1px;
+}
+
+.sort-btn[data-sort="deadline"] {
+  border-radius: 4px 0 0 4px !important;
+  margin-left: 0;
+}
+
+.sort-btn[data-sort="event-date"] {
+  border-radius: 0 4px 4px 0 !important;
+}
+
 .sort-btn.active-sort {
   background-color: #337ab7;
   color: #fff;
   border-color: #2e6da4;
+  z-index: 1;
+  position: relative;
 }

static/js/main.js

@@ -57,9 +57,18 @@ $(function() {
     if (confDeadline) {
       function make_update_countdown_fn(confDeadline) {
         return function(event) {
-          diff = moment() - confDeadline
+          diff = moment() - confDeadline;
           if (diff <= 0) {
-             $(this).html(event.strftime('%D days %Hh %Mm %Ss'));
+            $(this).html(event.strftime('%D days %Hh %Mm %Ss'));
+            var daysLeft = -diff / 86400000;
+            $(this).removeClass('urgent warning ok');
+            if (daysLeft < 7) {
+              $(this).addClass('urgent');
+            } else if (daysLeft < 30) {
+              $(this).addClass('warning');
+            } else {
+              $(this).addClass('ok');
+            }
           } else {
             $(this).html(confDeadline.fromNow());
           }