feat: pick out button and icon-button components

src/lib/components/ui/Button.svelte

@@ -0,0 +1,139 @@
+<script lang="ts">
+  type ButtonVariant = "primary" | "secondary" | "danger";
+  type ButtonSize = "sm" | "md" | "lg";
+  type ButtonType = "button" | "submit" | "reset";
+
+  let {
+    variant = "primary",
+    size = "md",
+    disabled = false,
+    type = "button",
+    fullWidth = false,
+    loading = false,
+    class: className = "",
+    children,
+    ...restProps
+  }: {
+    variant?: ButtonVariant;
+    size?: ButtonSize;
+    disabled?: boolean;
+    type?: ButtonType;
+    fullWidth?: boolean;
+    loading?: boolean;
+    class?: string;
+    children?: any;
+    [key: string]: any;
+  } = $props();
+</script>
+
+<button
+  {type}
+  {disabled}
+  class:btn-primary={variant === "primary"}
+  class:btn-secondary={variant === "secondary"}
+  class:btn-danger={variant === "danger"}
+  class:btn-sm={size === "sm"}
+  class:btn-md={size === "md"}
+  class:btn-lg={size === "lg"}
+  class:btn-full={fullWidth}
+  class:btn-loading={loading}
+  class={className}
+  {...restProps}
+>
+  {#if loading}
+    <span class="btn-spinner"></span>
+  {/if}
+  {@render children?.()}
+</button>
+
+<style>
+  .btn {
+    display: inline-flex;
+    align-items: center;
+    justify-content: center;
+    gap: 0.5rem;
+    padding: 0.75rem 1.5rem;
+    border: none;
+    border-radius: 4px;
+    font-size: 1rem;
+    font-weight: 500;
+    cursor: pointer;
+    transition: all 0.3s ease;
+    white-space: nowrap;
+  }
+
+  .btn:disabled {
+    opacity: 0.5;
+    cursor: not-allowed;
+  }
+
+  /* Sizes */
+  .btn-sm {
+    padding: 0.5rem 1rem;
+    font-size: 0.875rem;
+  }
+
+  .btn-md {
+    padding: 0.75rem 1.5rem;
+    font-size: 1rem;
+  }
+
+  .btn-lg {
+    padding: 1rem 2rem;
+    font-size: 1.125rem;
+  }
+
+  .btn-full {
+    width: 100%;
+  }
+
+  /* Variants */
+  .btn-primary {
+    background: #007bff;
+    color: white;
+  }
+
+  .btn-primary:hover:not(:disabled) {
+    background: #0056b3;
+  }
+
+  .btn-secondary {
+    background: #6c757d;
+    color: white;
+  }
+
+  .btn-secondary:hover:not(:disabled) {
+    background: #545b62;
+  }
+
+  .btn-danger {
+    background: #dc3545;
+    color: white;
+  }
+
+  .btn-danger:hover:not(:disabled) {
+    background: #c82333;
+  }
+
+  /* Loading state */
+  .btn-loading {
+    position: relative;
+    pointer-events: none;
+  }
+
+  .btn-spinner {
+    display: inline-block;
+    width: 1rem;
+    height: 1rem;
+    border: 2px solid currentColor;
+    border-right-color: transparent;
+    border-radius: 50%;
+    animation: spin 0.6s linear infinite;
+  }
+
+  @keyframes spin {
+    to {
+      transform: rotate(360deg);
+    }
+  }
+</style>

src/lib/components/ui/IconButton.svelte

@@ -0,0 +1,100 @@
+<script lang="ts">
+  type IconButtonVariant = "primary" | "secondary" | "danger";
+  type IconButtonSize = "sm" | "md" | "lg";
+
+  let {
+    variant = "secondary",
+    size = "md",
+    disabled = false,
+    ariaLabel = "",
+    class: className = "",
+    children,
+    ...restProps
+  }: {
+    variant?: IconButtonVariant;
+    size?: IconButtonSize;
+    disabled?: boolean;
+    ariaLabel?: string;
+    class?: string;
+    children?: any;
+    [key: string]: any;
+  } = $props();
+</script>
+
+<button
+  {disabled}
+  aria-label={ariaLabel}
+  class:icon-btn-primary={variant === "primary"}
+  class:icon-btn-secondary={variant === "secondary"}
+  class:icon-btn-danger={variant === "danger"}
+  class:icon-btn-sm={size === "sm"}
+  class:icon-btn-md={size === "md"}
+  class:icon-btn-lg={size === "lg"}
+  class={className}
+  {...restProps}
+>
+  {@render children?.()}
+</button>
+
+<style>
+  .icon-btn {
+    display: inline-flex;
+    align-items: center;
+    justify-content: center;
+    border: none;
+    cursor: pointer;
+    transition: all 0.2s ease;
+    background: none;
+    padding: 0.25rem 0.5rem;
+    font-size: 1.2rem;
+  }
+
+  .icon-btn:disabled {
+    opacity: 0.5;
+    cursor: not-allowed;
+  }
+
+  /* Sizes */
+  .icon-btn-sm {
+    padding: 0.125rem 0.25rem;
+    font-size: 1rem;
+  }
+
+  .icon-btn-md {
+    padding: 0.25rem 0.5rem;
+    font-size: 1.2rem;
+  }
+
+  .icon-btn-lg {
+    padding: 0.375rem 0.75rem;
+    font-size: 1.5rem;
+  }
+
+  /* Variants */
+  .icon-btn-primary {
+    color: #007bff;
+  }
+
+  .icon-btn-primary:hover:not(:disabled) {
+    color: #0056b3;
+    transform: scale(1.1);
+  }
+
+  .icon-btn-secondary {
+    color: #666;
+  }
+
+  .icon-btn-secondary:hover:not(:disabled) {
+    color: #007bff;
+    transform: scale(1.1);
+  }
+
+  .icon-btn-danger {
+    color: #dc3545;
+  }
+
+  .icon-btn-danger:hover:not(:disabled) {
+    color: #c82333;
+    transform: scale(1.1);
+  }
+</style>

src/lib/components/ui/index.ts

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+export { default as Button } from "./Button.svelte";
+export { default as IconButton } from "./IconButton.svelte";