Better error norifications

src/routes/private/events/event/view/components/ErrorMessage.svelte

@@ -1,11 +1,127 @@
 <script lang="ts">
-  let { error } = $props<{
-    error: string;
+  import { onMount } from 'svelte';
+
+  let { 
+    message, 
+    type = 'error',
+    duration = 50000,
+    onDismiss 
+  } = $props<{
+    message: string;
+    type?: 'error' | 'success' | 'warning' | 'info';
+    duration?: number;
+    onDismiss?: () => void;
   }>();
+
+  let visible = $state(true);
+  let timeoutId: ReturnType<typeof setTimeout>;
+
+  // Auto-dismiss after specified duration
+  onMount(() => {
+    if (duration > 0) {
+      timeoutId = setTimeout(() => {
+        dismiss();
+      }, duration);
+    }
+
+    // Cleanup timeout on component destroy
+    return () => {
+      if (timeoutId) {
+        clearTimeout(timeoutId);
+      }
+    };
+  });
+
+  function dismiss() {
+    visible = false;
+    if (onDismiss) {
+      onDismiss();
+    }
+  }
+
+  // Get styles based on toast type
+  const getToastStyles = (type: string) => {
+    switch (type) {
+      case 'success':
+        return 'border-green-200 bg-green-50 text-green-800';
+      case 'warning':
+        return 'border-yellow-200 bg-yellow-50 text-yellow-800';
+      case 'info':
+        return 'border-blue-200 bg-blue-50 text-blue-800';
+      case 'error':
+      default:
+        return 'border-red-200 bg-red-50 text-red-800';
+    }
+  };
+
+  // Get icon based on toast type
+  const getIcon = (type: string) => {
+    switch (type) {
+      case 'success':
+        return '✓';
+      case 'warning':
+        return '⚠';
+      case 'info':
+        return 'ℹ';
+      case 'error':
+      default:
+        return '✕';
+    }
+  };
 </script>
 
-{#if error}
-  <div class="mt-4 rounded border border-red-200 bg-red-50 p-3">
-    <p class="text-sm text-red-600">{error}</p>
+{#if visible && message}
+  <div 
+    class="fixed top-4 left-4 z-50 max-w-sm rounded-lg border p-4 shadow-lg transition-all duration-300 ease-in-out {getToastStyles(type)}"
+    role="alert"
+    aria-live="polite"
+  >
+    <div class="flex items-start gap-3">
+      <!-- Icon -->
+      <div class="flex-shrink-0">
+        <span class="text-lg font-semibold" aria-hidden="true">
+          {getIcon(type)}
+        </span>
+      </div>
+      
+      <!-- Message -->
+      <div class="flex-1">
+        <p class="text-sm font-medium">
+          {message}
+        </p>
+      </div>
+      
+      <!-- Close button -->
+      <button
+        onclick={dismiss}
+        class="flex-shrink-0 ml-2 text-current opacity-70 hover:opacity-100 transition-opacity"
+        aria-label="Dismiss notification"
+      >
+        <svg class="h-4 w-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+          <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M6 18L18 6M6 6l12 12" />
+        </svg>
+      </button>
+    </div>
+    
+    <!-- Progress bar for auto-dismiss -->
+    {#if duration > 0}
+      <div class="mt-2 h-1 w-full bg-black bg-opacity-10 rounded-full overflow-hidden">
+        <div 
+          class="h-full bg-current opacity-30 transition-all ease-linear"
+          style="animation: progress {duration}ms linear forwards;"
+        ></div>
+      </div>
+    {/if}
   </div>
 {/if}
+
+<style>
+  @keyframes progress {
+    from {
+      width: 100%;
+    }
+    to {
+      width: 0%;
+    }
+  }
+</style>