Add Local leaderboard, CSS optimiztion

data/index.css

@@ -53,6 +53,32 @@ body {
   border-radius: 10px;
 }
 
+.leaderboard-btn {
+  position: fixed;
+  top: 20px;
+  right: 90px;
+  background: rgba(255, 255, 255, 0.2);
+  border: 2px solid rgba(255, 255, 255, 0.3);
+  color: white;
+  padding: 15px;
+  border-radius: 50%;
+  text-decoration: none;
+  font-size: 1.5rem;
+  transition: all 0.3s ease;
+  z-index: 1000;
+  width: 60px;
+  height: 60px;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+}
+
+.leaderboard-btn:hover {
+  background: rgba(255, 255, 255, 0.3);
+  border-color: rgba(255, 255, 255, 0.5);
+  transform: scale(1.1);
+}
+
 .settings-btn {
   position: fixed;
   top: 20px;
@@ -82,7 +108,7 @@ body {
 .heartbeat-indicators {
   position: fixed;
   top: 20px;
-  right: 90px;
+  right: 160px;
   display: flex;
   gap: 15px;
   z-index: 1000;
@@ -93,6 +119,56 @@ body {
   border: 1px solid rgba(255, 255, 255, 0.2);
 }
 
+@media (max-width: 768px) {
+  .logo {
+    width: 40px;
+    height: 40px;
+    top: 15px;
+    left: 15px;
+    padding: 3px;
+  }
+  
+  .leaderboard-btn {
+    top: 15px;
+    right: 60px;
+    padding: 10px;
+    font-size: 1.2rem;
+  }
+  
+  .settings-btn {
+    top: 15px;
+    right: 15px;
+    padding: 10px;
+    font-size: 1.2rem;
+  }
+  
+  .heartbeat-indicators {
+    top: 15px;
+    right: 90px;
+    gap: 8px;
+    padding: 8px 12px;
+    font-size: 0.8rem;
+  }
+  
+  .heartbeat-indicator {
+    width: 12px;
+    height: 12px;
+  }
+  
+  .heartbeat-indicator::before {
+    font-size: 8px;
+    top: -20px;
+  }
+  
+  .header h1 {
+    font-size: clamp(1.2rem, 3vw, 1.8rem);
+  }
+  
+  .header p {
+    font-size: clamp(0.7rem, 1.5vw, 0.9rem);
+  }
+}
+
 .heartbeat-indicator {
   width: 20px;
   height: 20px;
@@ -300,7 +376,7 @@ body {
   transition: transform 0.3s ease;
   display: flex;
   flex-direction: column;
-  justify-content: center;
+  justify-content: space-between;
   height: 100%;
   overflow: hidden;
 }
@@ -344,7 +420,7 @@ body {
 }
 
 .time-display {
-  font-size: clamp(3rem, 9vw, 10rem);
+  font-size: clamp(3rem, 13vw, 13rem);
   font-weight: bold;
   margin: clamp(10px, 1vh, 15px) 0;
   font-family: "Courier New", monospace;
@@ -353,7 +429,7 @@ body {
 }
 
 .status {
-  font-size: clamp(1.5rem, 3vw, 3rem);
+  font-size: clamp(1.5rem, 4vw, 5rem);
   margin: clamp(8px, 1vh, 12px) 0;
   padding: clamp(6px, 1vh, 10px) clamp(12px, 2vw, 18px);
   border-radius: 20px;
@@ -428,20 +504,40 @@ body {
   border-radius: 15px;
   padding: clamp(10px, 1.5vh, 15px);
   margin: 1vh 0 0 0;
-  width: 50%;
-  max-width: 50%;
+  width: clamp(320px, 80vw, 960px);
+  max-width: 960px;
   text-align: center;
   border: 1px solid rgba(255, 255, 255, 0.2);
   flex-shrink: 0;
   align-self: center;
+  display: flex;
+  flex-direction: column;
+  align-items: stretch;
+  gap: clamp(12px, 2vh, 20px);
+  box-sizing: border-box;
+}
+
+#leaderboard-container {
+  text-align: left;
+  display: grid;
+  grid-template-columns: 1fr;
+  gap: clamp(12px, 2vh, 20px);
+  width: 100%;
+}
+
+@media (min-width: 768px) {
+  #leaderboard-container {
+    grid-template-columns: repeat(2, minmax(0, 1fr));
+  }
 }
 
 .best-times h3 {
   font-size: clamp(0.9rem, 1.8vw, 1.1rem);
-  margin-bottom: clamp(5px, 0.5vh, 8px);
+  margin: 0 auto;
   font-weight: bold;
   text-transform: uppercase;
   font-family: "Segoe UI", Arial, sans-serif;
+  text-align: center;
 }
 
 .best-time-row {
@@ -468,10 +564,13 @@ body {
   font-size: clamp(1.1rem, 2.2vw, 1.4rem);
   font-weight: 600;
   background: rgba(255, 255, 255, 0.15);
-  padding: clamp(8px, 1.5vh, 12px) clamp(12px, 2vw, 16px);
+  padding: clamp(12px, 2vh, 16px) clamp(16px, 3vw, 24px);
   border-radius: 10px;
   border: 1px solid rgba(255, 255, 255, 0.3);
   transition: all 0.3s ease;
+  min-height: 50px;
+  width: 100%;
+  box-sizing: border-box;
 }
 
 .leaderboard-entry:hover {
@@ -502,6 +601,60 @@ body {
   text-align: right;
 }
 
+.leaderboard-entry.gold {
+  background: linear-gradient(135deg, #ffd700 0%, #ffed4e 100%);
+  border-color: #ffd700;
+  color: #b8860b;
+  font-weight: bold;
+  box-shadow: 0 4px 15px rgba(255, 215, 0, 0.3);
+}
+
+.leaderboard-entry.gold .rank {
+  color: #7a4d00;
+  text-shadow: 0 1px 2px rgba(255, 255, 255, 0.6);
+}
+
+.leaderboard-entry.gold .time {
+  color: #0f5132;
+  text-shadow: 0 1px 2px rgba(255, 255, 255, 0.5);
+}
+
+.leaderboard-entry.silver {
+  background: linear-gradient(135deg, #c0c0c0 0%, #e8e8e8 100%);
+  border-color: #c0c0c0;
+  color: #696969;
+  font-weight: bold;
+  box-shadow: 0 4px 15px rgba(192, 192, 192, 0.3);
+}
+
+.leaderboard-entry.silver .rank {
+  color: #4b5563;
+  text-shadow: 0 1px 2px rgba(255, 255, 255, 0.6);
+}
+
+.leaderboard-entry.silver .time {
+  color: #0f5132;
+  text-shadow: 0 1px 2px rgba(255, 255, 255, 0.5);
+}
+
+.leaderboard-entry.bronze {
+  background: linear-gradient(135deg, #cd7f32 0%, #e6a85c 100%);
+  border-color: #cd7f32;
+  color: #8b4513;
+  font-weight: bold;
+  box-shadow: 0 4px 15px rgba(205, 127, 50, 0.3);
+}
+
+.leaderboard-entry.bronze .rank {
+  color: #7a3410;
+  text-shadow: 0 1px 2px rgba(255, 255, 255, 0.6);
+}
+
+.leaderboard-entry.bronze .time {
+  color: #0f5132;
+  text-shadow: 0 1px 2px rgba(255, 255, 255, 0.5);
+}
+
 .no-times {
   text-align: center;
   color: rgba(255, 255, 255, 0.7);