Add multi-player support (2-4 players) and AI bots

public/styles.css

@@ -30,6 +30,110 @@ body {
   overflow: hidden;
 }
 
+/* Start Screen */
+.start-screen {
+  display: flex;
+  justify-content: center;
+  align-items: center;
+  height: 100vh;
+  background: var(--bg-primary);
+}
+
+.start-panel {
+  background: var(--bg-secondary);
+  padding: 40px;
+  border-radius: 12px;
+  text-align: center;
+  max-width: 450px;
+  width: 90%;
+  border: 2px solid var(--accent-primary);
+}
+
+.start-panel h1 {
+  font-size: 2.5rem;
+  color: var(--accent-primary);
+  text-transform: uppercase;
+  letter-spacing: 4px;
+  margin-bottom: 5px;
+}
+
+.start-panel .subtitle {
+  font-size: 1rem;
+  color: var(--text-secondary);
+  margin-bottom: 30px;
+}
+
+.setup-section {
+  text-align: left;
+}
+
+.setup-section h3 {
+  font-size: 1.1rem;
+  color: var(--text-primary);
+  margin-bottom: 20px;
+  text-transform: uppercase;
+  letter-spacing: 1px;
+}
+
+.setup-group {
+  margin-bottom: 20px;
+}
+
+.setup-group label {
+  display: block;
+  font-size: 0.9rem;
+  color: var(--text-secondary);
+  margin-bottom: 8px;
+}
+
+.setup-group select {
+  width: 100%;
+  padding: 10px;
+  background: var(--bg-panel);
+  border: 1px solid var(--accent-secondary);
+  border-radius: 6px;
+  color: var(--text-primary);
+  font-size: 0.9rem;
+}
+
+.player-type-row {
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+  margin-bottom: 8px;
+  padding: 8px;
+  background: var(--bg-panel);
+  border-radius: 6px;
+}
+
+.player-type-row span {
+  font-size: 0.85rem;
+  color: var(--text-primary);
+}
+
+.player-type-row select {
+  width: 120px;
+  padding: 6px;
+  background: var(--bg-primary);
+  border: 1px solid var(--accent-secondary);
+  border-radius: 4px;
+  color: var(--text-primary);
+  font-size: 0.85rem;
+}
+
+.btn-large {
+  width: 100%;
+  padding: 15px;
+  font-size: 1rem;
+  margin-top: 10px;
+}
+
+.game-screen {
+  display: flex;
+  flex-direction: column;
+  height: 100vh;
+}
+
 .game-container {
   display: flex;
   flex-direction: column;
@@ -89,6 +193,7 @@ body {
   padding: 12px;
   border-left: 4px solid transparent;
   transition: all 0.3s ease;
+  margin-bottom: 10px;
 }
 
 .player-card.active {
@@ -96,7 +201,7 @@ body {
 }
 
 .player-1 {
-  border-left-color: var(--player1-color);
+  border-left-color: #4ecca3;
 }
 
 .player-1.active {
@@ -104,13 +209,44 @@ body {
 }
 
 .player-2 {
-  border-left-color: var(--player2-color);
+  border-left-color: #e94560;
 }
 
 .player-2.active {
   background: linear-gradient(135deg, var(--bg-panel), rgba(233, 69, 96, 0.1));
 }
 
+.player-3 {
+  border-left-color: #f9ed69;
+}
+
+.player-3.active {
+  background: linear-gradient(135deg, var(--bg-panel), rgba(249, 237, 105, 0.1));
+}
+
+.player-4 {
+  border-left-color: #a8e6cf;
+}
+
+.player-4.active {
+  background: linear-gradient(135deg, var(--bg-panel), rgba(168, 230, 207, 0.1));
+}
+
+.player-card.ai-controlled {
+  opacity: 0.8;
+}
+
+.player-card.ai-controlled::after {
+  content: 'AI';
+  position: absolute;
+  top: 5px;
+  right: 8px;
+  font-size: 0.7rem;
+  background: var(--accent-secondary);
+  padding: 2px 6px;
+  border-radius: 4px;
+}
+
 .player-card h3 {
   font-size: 1rem;
   margin-bottom: 10px;