FIN INIT

static/css/caching-optimizations.css

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+/**
+ * MYP Platform - CSS Caching-Optimierungen für Raspberry Pi
+ * Performance-optimierte Styles ohne GPU-intensive Effekte
+ */
+
+/* ===== KRITISCHE ABOVE-THE-FOLD STYLES - RASPBERRY PI OPTIMIERT ===== */
+/* Diese Styles sollten inline im HTML-Head geladen werden */
+.critical-header {
+  background: rgba(255, 255, 255, 0.98);
+  position: sticky;
+  top: 0;
+  z-index: 1000;
+  /* Entfernt: backdrop-filter, box-shadow */
+}
+
+.critical-nav {
+  display: flex;
+  align-items: center;
+  padding: 1rem;
+  max-width: 1200px;
+  margin: 0 auto;
+}
+
+.critical-logo {
+  font-weight: 700;
+  font-size: 1.25rem;
+  color: #0073ce;
+}
+
+.critical-main {
+  min-height: 100vh;
+  background: #fafbfc;
+  /* Entfernt: gradient für bessere Performance */
+}
+
+/* ===== LAZY LOADING PLACEHOLDER - VEREINFACHT ===== */
+.lazy-placeholder {
+  background: #f0f0f0;
+  border-radius: 4px;
+  /* Entfernt: gradient und animation */
+}
+
+.dark .lazy-placeholder {
+  background: #374151;
+  /* Entfernt: gradient und animation */
+}
+
+/* ===== PRELOAD HINTS ===== */
+.preload-image {
+  content-visibility: auto;
+  contain-intrinsic-size: 300px 200px;
+}
+
+.preload-component {
+  content-visibility: auto;
+  contain-intrinsic-size: 100px;
+}
+
+/* ===== CACHE-OPTIMIERTE KOMPONENTEN - RASPBERRY PI OPTIMIERT ===== */
+.cache-card {
+  background: rgba(255, 255, 255, 0.98);
+  border: 1px solid rgba(229, 231, 235, 0.5);
+  border-radius: 8px;
+  padding: 1rem;
+  margin-bottom: 1rem;
+  contain: layout style;
+  /* Entfernt: transition, hover-transform, paint containment */
+}
+
+.cache-button {
+  background: #0073ce;
+  color: white;
+  border: none;
+  border-radius: 6px;
+  padding: 0.5rem 1rem;
+  font-weight: 600;
+  contain: layout style;
+  /* Entfernt: transition */
+}
+
+.cache-button:hover {
+  background: #005a9f;
+}
+
+.cache-input {
+  background: rgba(255, 255, 255, 0.98);
+  border: 1px solid rgba(229, 231, 235, 0.8);
+  border-radius: 4px;
+  padding: 0.5rem;
+  contain: layout style;
+  /* Entfernt: transition, box-shadow */
+}
+
+.cache-input:focus {
+  outline: none;
+  border-color: #0073ce;
+  /* Entfernt: box-shadow */
+}
+
+/* ===== LAYOUT SHIFT PREVENTION ===== */
+.prevent-cls {
+  min-height: 200px;
+  contain: layout;
+}
+
+.image-container {
+  aspect-ratio: 16/9;
+  overflow: hidden;
+  border-radius: 8px;
+  background: #f3f4f6;
+}
+
+.image-container img {
+  width: 100%;
+  height: 100%;
+  object-fit: cover;
+  /* Entfernt: transition */
+}
+
+.image-container img[loading="lazy"] {
+  opacity: 0;
+}
+
+.image-container img[loading="lazy"].loaded {
+  opacity: 1;
+}
+
+/* ===== OPTIMIERTE TYPOGRAPHY ===== */
+.text-heading {
+  font-weight: 700;
+  line-height: 1.2;
+  color: #111827;
+  contain: layout style;
+}
+
+.text-body {
+  line-height: 1.6;
+  color: #374151;
+  contain: layout style;
+}
+
+.text-muted {
+  color: #6b7280;
+  contain: layout style;
+}
+
+/* ===== DARK MODE CACHE OPTIMIZATIONS - VEREINFACHT ===== */
+.dark .cache-card {
+  background: rgba(30, 41, 59, 0.98);
+  border-color: rgba(100, 116, 139, 0.3);
+}
+
+.dark .cache-input {
+  background: rgba(30, 41, 59, 0.98);
+  border-color: rgba(100, 116, 139, 0.5);
+  color: #e2e8f0;
+}
+
+.dark .text-heading {
+  color: #f8fafc;
+}
+
+.dark .text-body {
+  color: #e2e8f0;
+}
+
+.dark .text-muted {
+  color: #94a3b8;
+}
+
+.dark .image-container {
+  background: #374151;
+}
+
+/* ===== RESPONSIVE OPTIMIZATIONS ===== */
+@media (max-width: 768px) {
+  .critical-nav {
+    padding: 0.75rem;
+  }
+  
+  .cache-card {
+    padding: 0.75rem;
+    margin-bottom: 0.75rem;
+  }
+  
+  .cache-button {
+    padding: 0.75rem 1.25rem;
+    font-size: 0.875rem;
+  }
+}
+
+/* ===== PRINT OPTIMIZATIONS ===== */
+@media print {
+  .critical-header,
+  .cache-button {
+    display: none;
+  }
+  
+  .cache-card {
+    border: 1px solid #000;
+    break-inside: avoid;
+  }
+}
+
+/* ===== ALLE GPU ACCELERATION ENTFERNT ===== */
+/* GPU-Beschleunigung ist auf Raspberry Pi problematisch */
+
+/* ===== NUR FADE-IN OHNE TRANSFORM ===== */
+.fade-in-optimized {
+  opacity: 0;
+  /* Entfernt: transform und alle transform-Animationen */
+}
+
+.fade-in-optimized.visible {
+  opacity: 1;
+  /* Nur opacity change */
+}
+
+/* ===== CONTAINER QUERIES SUPPORT ===== */
+@container (min-width: 300px) {
+  .cache-card {
+    display: grid;
+    grid-template-columns: 1fr auto;
+    gap: 1rem;
+    align-items: center;
+  }
+}
+
+/* ===== CONTENT VISIBILITY OPTIMIZATIONS ===== */
+.auto-height {
+  content-visibility: auto;
+  contain-intrinsic-size: 0 200px;
+}
+
+.hidden-content {
+  content-visibility: hidden;
+}
+
+/* ===== REDUCED MOTION PREFERENCES - ERWEITERT ===== */
+@media (prefers-reduced-motion: reduce) {
+  .fade-in-optimized,
+  .cache-card,
+  .cache-button,
+  .cache-input {
+    transition: none !important;
+    transform: none !important;
+    animation: none !important;
+  }
+  
+  .lazy-placeholder {
+    animation: none !important;
+    background: #f0f0f0 !important;
+  }
+}
+
+/* ===== HIGH CONTRAST MODE ===== */
+@media (prefers-contrast: high) {
+  .cache-card {
+    border-width: 2px;
+    border-color: #000;
+  }
+  
+  .cache-button {
+    border: 2px solid #000;
+  }
+  
+  .cache-input {
+    border-width: 2px;
+    border-color: #000;
+  }
+}
+
+/* ===== RASPBERRY PI SPECIFIC OPTIMIERUNGEN ===== */
+.raspberry-pi-optimized {
+  /* Minimale CSS Properties */
+  /* Keine will-change */
+  /* Keine Transforms */
+  /* Keine Shadows */
+  /* Nur opacity und color Transitions */
+  transition: opacity 0.2s ease, color 0.2s ease, background-color 0.2s ease;
+}
+
+.performance-critical {
+  /* Für kritische Bereiche */
+  contain: layout style;
+  /* Keine paint containment */
+}