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frontend/src/components/base/AdBanner.astro

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+---
+interface AdBannerProps {
+    width?: string;
+    height?: string;
+    className?: string;
+}
+
+const {
+    width = "300",
+    height = "250",
+    className = ""
+} = Astro.props as AdBannerProps;
+
+const displayWidth = `${width}px`;
+const displayHeight = `${height}px`;
+const sizeLabel = `${width}×${height}`;
+---
+
+<div class={`ad-banner ${className}`} style={`--ad-width: ${displayWidth}; --ad-height: ${displayHeight};`}>
+    <div class="ad-banner__placeholder">
+        <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="1.5">
+            <rect x="3" y="3" width="18" height="18" rx="2" ry="2"/>
+            <circle cx="8.5" cy="8.5" r="1.5"/>
+            <polyline points="21 15 16 10 5 21"/>
+        </svg>
+        <span>Рекламный блок</span>
+        <span class="ad-banner__size">{sizeLabel}</span>
+    </div>
+</div>
+
+<style>
+    .ad-banner {
+        background: #ffffff;
+        border-radius: 16px;
+        border: 1px solid #e2e8f0;
+        overflow: hidden;
+    }
+
+    .ad-banner__placeholder {
+        display: flex;
+        flex-direction: column;
+        align-items: center;
+        justify-content: center;
+        padding: 2rem 1rem;
+        text-align: center;
+        min-height: calc(var(--ad-height, 250px) - 4px);
+        min-width: calc(var(--ad-width, 300px) - 2px);
+        width: 100%;
+        background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
+    }
+
+    .ad-banner__placeholder svg {
+        width: 48px;
+        height: 48px;
+        color: #94a3b8;
+        margin-bottom: 1rem;
+    }
+
+    .ad-banner__placeholder span {
+        color: #64748b;
+        font-size: 0.9rem;
+    }
+
+    .ad-banner__size {
+        font-size: 0.75rem !important;
+        color: #94a3b8 !important;
+        margin-top: 0.5rem;
+    }
+
+    .ad-banner--dashed {
+        border: 2px dashed #cbd5e1;
+        background: #f1f5f9;
+    }
+
+    .ad-banner--dashed .ad-banner__placeholder {
+        background: transparent;
+    }
+
+    .ad-banner--horizontal {
+        display: flex;
+        align-items: center;
+        justify-content: center;
+    }
+
+    .ad-banner--horizontal .ad-banner__placeholder {
+        min-height: 90px;
+        padding: 1.5rem 2rem;
+    }
+
+    .ad-banner--vertical {
+        min-height: var(--ad-height, 250px);
+    }
+
+    .ad-banner--vertical .ad-banner__placeholder {
+        height: 100%;
+    }
+</style>