/*
  style.css — Vollständig modernisiertes Layout
  -----------------------------------------------------------------------
  • Glassmorphism, Micro-Animationen und moderne Designsprache
  • Alle Funktionen bleiben exakt erhalten
  • Performance-optimiert mit Hardware-Beschleunigung
*/

/* =============================
   Farbvariablen (erweitert)
   ============================= */
:root {
  /* Platzhalter für die Höhe der globalen Navigation */
  --global-nav-height: 64px; /* Passen Sie diesen Wert bei Bedarf an (z.B. 56px, 72px) */

  /* Basis-Farben */
  --green: #22c55e;
  --red: #ef4444;
  --yellow: #eab308;
  --purple: #8b5cf6;
  --cyan: #06b6d4;

  /* Light Theme (Standard) */
  --bg: #F0F0F0;
  --panel: #FFFFFF;
  --text: #1a1a1a;
  --muted: #555555;
  --accent: #005cda;
  --accent-text: #FFFFFF;
  --btn: #E8E8E8;
  --btn-hover: #D4D4D4;
  --ring: #3e66d3;
  --border-color: #C0C0C0;
  --shadow-color: rgb(0 0 0 / 10%);
  --canvas-bg: #000;

  /* Neue moderne Variablen */
  --glass-bg: color-mix(in oklab, var(--panel) 80%, transparent);
  --glass-border: color-mix(in oklab, var(--border-color) 40%, transparent);
  --surface-elevation: 0 8px 32px color-mix(in oklab, var(--shadow-color) 15%, transparent);
  --surface-hover: 0 16px 48px color-mix(in oklab, var(--shadow-color) 25%, transparent);
  --surface-active: 0 4px 16px color-mix(in oklab, var(--shadow-color) 20%, transparent);

  /* Dynamische Hintergründe */
  --body-gradient: 
    radial-gradient(circle at 25% 25%, color-mix(in oklab, var(--accent) 4%, transparent) 0%, transparent 60%),
    radial-gradient(circle at 75% 75%, color-mix(in oklab, var(--green) 3%, transparent) 0%, transparent 60%),
    linear-gradient(135deg, var(--bg) 0%, color-mix(in oklab, var(--bg) 97%, var(--accent)) 100%);

  /* Layout-Variablen */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --radius-2xl: 24px;

  --space-1: 6px;
  --space-2: 10px;
  --space-3: 14px;
  --space-4: 18px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px; /* NEU: Größerer Abstandswert */

  --font-sans: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Inter, "Helvetica Neue", Arial, "Apple Color Emoji", "Segoe UI Emoji";
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;

  /* Animation Curves */
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --ease-smooth: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-bounce: cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

/* Dark Theme Overrides */
:root[data-theme="dark"] {
  --bg: #0a0a0a;
  --panel: #161616;
  --text: #f0f0f0;
  --muted: #888888;
  --accent: #6ea8fe;
  --accent-text: #0a0a0a;
  --btn: #222222;
  --btn-hover: #333333;
  --ring: #3e66d3;
  --border-color: rgb(255 255 255 / 15%);
  --shadow-color: rgb(0 0 0 / 50%);

  --glass-bg: color-mix(in oklab, var(--panel) 70%, transparent);
  --glass-border: color-mix(in oklab, var(--border-color) 60%, transparent);

  --body-gradient: 
    radial-gradient(circle at 20% 80%, color-mix(in oklab, var(--accent) 8%, transparent) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, color-mix(in oklab, var(--purple) 6%, transparent) 0%, transparent 50%),
    radial-gradient(circle at 40% 40%, color-mix(in oklab, var(--cyan) 4%, transparent) 0%, transparent 70%),
    linear-gradient(135deg, var(--bg) 0%, color-mix(in oklab, var(--bg) 95%, #1a1a2e) 100%);
}

/* =============================
   Base / Reset (verbessert)
   ============================= */
* { 
  box-sizing: border-box; 
}

html, body { 
  height: auto;
  min-height: 100%;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--text);
  background: var(--body-gradient);
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background-color 0.5s var(--ease-smooth), color 0.3s var(--ease-smooth);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  overflow-x: hidden;
}

img, canvas, svg, video { 
  display: block; 
  max-width: 100%; 
}

button { 
  font: inherit; 
  cursor: pointer; 
  border: none;
  background: none;
}

:focus-visible {
  outline: none;
  box-shadow: 
    0 0 0 3px var(--bg), 
    0 0 0 6px var(--accent),
    0 8px 20px color-mix(in oklab, var(--accent) 20%, transparent);
  border-radius: var(--radius-sm);
  transition: box-shadow 200ms var(--ease-smooth);
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { 
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* =============================
   Layout—Container & Header
   ============================= */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--space-6) var(--space-5);
  margin-top: var(--space-7); /* ERHÖHT: Mehr Abstand zum Header */
  flex: 1;
}

.app-header {
  position: sticky; 
  top: var(--global-nav-height);
  z-index: 100;
  padding: var(--space-3) var(--space-5);
  backdrop-filter: saturate(1.8) blur(24px);
  background: var(--glass-bg);
  border-bottom: 1px solid var(--glass-border);
  box-shadow: 
    0 8px 32px color-mix(in oklab, var(--shadow-color) 8%, transparent),
    inset 0 1px 0 color-mix(in oklab, white 10%, transparent);
  transition: all 0.3s var(--ease-smooth);
}

.app-header__limiter {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  width: 100%;
}

.app-header__leading {
  flex: 1 1 0%;
}

.app-header__title-container {
  flex: 0 1 auto;
  min-width: 0; /* Wichtig für das Schrumpfen in Flexbox */
  text-align: center;
}

h1.app-title {
  font-weight: 700;
  font-size: 1.2rem;
  margin: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  
  background: linear-gradient(135deg, var(--text), color-mix(in oklab, var(--text) 70%, var(--accent)));
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow: none;
}

.header-actions {
  flex: 1 1 0%;
  display: flex; 
  align-items: center; 
  justify-content: flex-end;
  gap: var(--space-2);
}

/* =============================
   Footer (modernisiert)
   ============================= */
.app-footer {
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  border-top: 1px solid var(--glass-border);
  padding: var(--space-5) 0;
  margin-top: auto;
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-5);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-3);
}

.footer-links {
  display: flex;
  gap: var(--space-5);
  flex-wrap: wrap;
  justify-content: center;
}

.footer-links a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.9rem;
  transition: all 0.3s var(--ease-smooth);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  position: relative;
  overflow: hidden;
}

.footer-links a::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, 
    color-mix(in oklab, var(--accent) 10%, transparent),
    color-mix(in oklab, var(--green) 8%, transparent));
  opacity: 0;
  transition: opacity 0.3s var(--ease-smooth);
}

.footer-links a:hover {
  color: var(--accent);
  transform: translateY(-2px);
}

.footer-links a:hover::before {
  opacity: 1;
}

.footer-text {
  color: var(--muted);
  font-size: 0.85rem;
  text-align: center;
  position: relative;
}

/* =============================
   Statusbar (Glassmorphism)
   ============================= */
#statusBar {
  display: none;
  align-items: center; 
  flex-wrap: wrap;
  gap: var(--space-3);
  padding: var(--space-4);
  margin: var(--space-4) 0;
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-2xl);
  box-shadow: 
    var(--surface-elevation),
    inset 0 1px 0 color-mix(in oklab, white 15%, transparent);
  position: relative;
  overflow: hidden;
}

#statusBar::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, 
    color-mix(in oklab, var(--accent) 3%, transparent) 0%,
    transparent 50%,
    color-mix(in oklab, var(--green) 2%, transparent) 100%);
  pointer-events: none;
}

#statusBar .stat {
  display: inline-flex; 
  align-items: center; 
  gap: 8px;
  padding: 10px 16px; 
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, 
    color-mix(in oklab, var(--accent) 12%, transparent) 0%,
    color-mix(in oklab, var(--accent) 8%, transparent) 100%);
  border: 1px solid color-mix(in oklab, var(--accent) 20%, transparent);
  color: var(--text);
  font-weight: 500;
  position: relative;
  overflow: hidden;
  transition: all 0.3s var(--ease-smooth);
}

#statusBar .stat::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, 
    transparent 0%, 
    color-mix(in oklab, white 15%, transparent) 50%, 
    transparent 100%);
  transition: left 0.6s var(--ease-smooth);
}

#statusBar .stat:hover::before {
  left: 100%;
}

/* =============================
   Upload / DropArea (dynamisch)
   ============================= */
#dropArea {
  display: grid;
  place-items: center;
  gap: var(--space-3);
  min-height: 240px;
  padding: var(--space-6);
  border: 2px dashed color-mix(in oklab, var(--border-color) 50%, transparent);
  border-radius: var(--radius-2xl);
  background: 
    linear-gradient(135deg, 
      color-mix(in oklab, var(--panel) 60%, transparent) 0%,
      color-mix(in oklab, var(--panel) 30%, transparent) 100%),
    radial-gradient(circle at center, 
      color-mix(in oklab, var(--accent) 4%, transparent) 0%,
      transparent 70%);
  color: var(--muted);
  transition: all 0.4s var(--ease-spring);
  cursor: pointer;
  position: relative;
  overflow: hidden;
  margin-bottom: var(--space-7); /* NEU: Abstand nach unten */
}

#dropArea::before {
  content: '';
  position: absolute;
  inset: -3px;
  background: linear-gradient(45deg, 
    var(--accent), var(--green), var(--purple), var(--accent));
  border-radius: inherit;
  opacity: 0;
  transition: opacity 0.4s var(--ease-smooth);
  z-index: -1;
}

#dropArea.highlight {
  border-color: transparent;
  background: 
    linear-gradient(135deg, 
      color-mix(in oklab, var(--accent) 15%, transparent) 0%,
      color-mix(in oklab, var(--green) 10%, transparent) 100%);
  transform: translateY(-6px) scale(1.02);
  box-shadow: var(--surface-hover);
}

#dropArea.highlight::before {
  opacity: 0.1;
}

.upload-icon {
  font-size: 48px;
  color: var(--accent);
  transition: all 0.3s var(--ease-bounce);
}

#dropArea:hover .upload-icon {
  transform: scale(1.1) rotate(5deg);
}

.upload-text {
  font-size: 1.1rem;
  font-weight: 500;
  transition: color 0.3s var(--ease-smooth);
}

#dropArea:hover .upload-text {
  color: var(--accent);
}

/* =============================
   Buttons (Micro-Animationen)
   ============================= */
.btn {
  display: inline-flex; 
  align-items: center; 
  justify-content: center; 
  gap: 8px;
  padding: 12px 18px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  background: var(--btn);
  color: var(--text);
  font-weight: 500;
  transition: all 0.2s var(--ease-smooth);
  text-decoration: none;
  position: relative;
  overflow: hidden;
  will-change: transform;
}

.btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  background: color-mix(in oklab, white 20%, transparent);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: all 0.4s var(--ease-smooth);
  pointer-events: none;
}

.btn:hover {
  transform: translateY(-2px);
  background: var(--btn-hover);
  box-shadow: var(--surface-elevation);
}

.btn:hover::before {
  width: 300px;
  height: 300px;
}

.btn:active {
  transform: translateY(0) scale(0.98);
  box-shadow: var(--surface-active);
}

.btn[disabled] { 
  opacity: .5; 
  pointer-events: none; 
  transform: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent) 0%, color-mix(in oklab, var(--accent) 90%, var(--purple)) 100%);
  color: var(--accent-text);
  border-color: transparent;
  box-shadow: 0 4px 16px color-mix(in oklab, var(--accent) 25%, transparent);
}

.btn-primary:hover {
  background: linear-gradient(135deg, 
    color-mix(in oklab, var(--accent) 90%, black) 0%, 
    color-mix(in oklab, var(--accent) 80%, var(--purple)) 100%);
  box-shadow: 0 8px 32px color-mix(in oklab, var(--accent) 35%, transparent);
  transform: translateY(-3px);
}

.theme-toggle, .lang-toggle {
  display: inline-grid; 
  place-items: center; 
  width: 44px; 
  height: 44px;
  border-radius: 50%;
  border: 1px solid transparent;
  background: transparent;
  color: var(--muted);
  font-size: 1rem;
  transition: all 0.3s var(--ease-spring);
  position: relative;
  overflow: hidden;
}

.theme-toggle::before, .lang-toggle::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--btn);
  border-radius: inherit;
  opacity: 0;
  transition: opacity 0.3s var(--ease-smooth);
}

.theme-toggle:hover, .lang-toggle:hover {
  color: var(--text);
  transform: scale(1.1);
  border-color: var(--border-color);
}

.theme-toggle:hover::before, .lang-toggle:hover::before {
  opacity: 1;
}

.lang-toggle.active {
  background: var(--accent);
  color: var(--accent-text);
  box-shadow: 0 4px 16px color-mix(in oklab, var(--accent) 30%, transparent);
}

/* =============================
   Grid & Karten (revolutioniert)
   ============================= */
#imageContainer {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-5);
}

.image-card {
  position: relative;
  display: flex; 
  flex-direction: column; 
  gap: var(--space-3);
  padding: var(--space-4);
  background: var(--panel);
  border: 1px solid transparent;
  border-radius: var(--radius-2xl);
  box-shadow: var(--surface-elevation);
  transition: all 0.4s var(--ease-spring);
  cursor: pointer;
  will-change: transform;
  opacity: 0;
  transform: translateY(40px);
  animation: cardFadeIn 0.6s var(--ease-smooth) forwards;
  
  /* Gradient Border */
  background: 
    var(--panel) padding-box,
    linear-gradient(135deg, 
      color-mix(in oklab, var(--border-color) 40%, transparent), 
      color-mix(in oklab, var(--accent) 15%, transparent)) border-box;
}

.image-card:nth-child(2n) {
  animation-delay: 0.1s;
}

.image-card:nth-child(3n) {
  animation-delay: 0.2s;
}

.image-card:nth-child(4n) {
  animation-delay: 0.3s;
}

@keyframes cardFadeIn {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.image-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(135deg, 
    color-mix(in oklab, var(--accent) 8%, transparent) 0%,
    transparent 40%,
    color-mix(in oklab, var(--green) 6%, transparent) 100%);
  opacity: 0;
  transition: opacity 0.4s var(--ease-smooth);
  pointer-events: none;
}

.image-card:hover {
  transform: translateY(-12px) scale(1.02);
  box-shadow: var(--surface-hover);
}

.image-card:hover::before {
  opacity: 1;
}

.image-card.selected {
  background: 
    var(--panel) padding-box,
    linear-gradient(135deg, 
      var(--accent), 
      color-mix(in oklab, var(--accent) 70%, var(--green))) border-box;
  box-shadow: 
    var(--surface-hover),
    0 0 0 4px color-mix(in oklab, var(--accent) 15%, transparent);
}

.image-preview { 
  position: relative; 
  overflow: hidden; 
  border-radius: var(--radius-lg); 
  background: var(--bg);
}

.image-preview canvas { 
  width: 100%; 
  height: auto; 
  display: block; 
  aspect-ratio: 4 / 3; 
  object-fit: cover;
  transition: all 0.4s var(--ease-smooth);
}

.image-card:hover .image-preview canvas {
  transform: scale(1.05);
}

.image-info { 
  font-size: 0.92rem; 
  color: var(--muted); 
  overflow: hidden; 
  text-overflow: ellipsis; 
  white-space: nowrap;
  position: relative;
  z-index: 2;
}

.image-actions { 
  display: flex; 
  gap: var(--space-2); 
  position: relative;
  z-index: 2;
}

.image-action-btn {
  width: 40px; 
  height: 40px; 
  border-radius: 50%;
  display: inline-grid; 
  place-items: center;
  background: var(--btn);
  color: var(--muted);
  border: 1px solid var(--border-color);
  cursor: pointer;
  transition: all 0.3s var(--ease-spring);
  position: relative;
  overflow: hidden;
}

.image-action-btn::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  background: color-mix(in oklab, var(--accent) 25%, transparent);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: all 0.3s var(--ease-smooth);
  opacity: 0;
  pointer-events: none;
}

.image-action-btn:hover {
  transform: translateY(-3px) scale(1.1);
  box-shadow: 0 8px 20px var(--shadow-color);
  color: var(--text);
  border-color: var(--accent);
}

.image-action-btn:active::after {
  width: 50px;
  height: 50px;
  opacity: 1;
  transition: all 0.1s var(--ease-smooth);
}

/* Format Dropdown (glassmorphism) */
.format-dropdown {
  position: absolute;
  top: 100%;
  left: 40px;
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--surface-elevation);
  min-width: 140px;
  z-index: 10;
  opacity: 0;
  pointer-events: none;
  transform: translateY(-10px) scale(0.95);
  transition: all 0.3s var(--ease-spring);
}

.format-dropdown.active {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0) scale(1);
}

.format-option {
  padding: 12px 16px;
  cursor: pointer;
  transition: all 0.2s var(--ease-smooth);
  font-size: 0.9rem;
  position: relative;
  overflow: hidden;
}

.format-option::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, 
    color-mix(in oklab, var(--accent) 10%, transparent),
    color-mix(in oklab, var(--green) 8%, transparent));
  opacity: 0;
  transition: opacity 0.2s var(--ease-smooth);
}

.format-option:hover {
  color: var(--accent);
}

.format-option:hover::before {
  opacity: 1;
}

.format-option.disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.format-option:first-child {
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.format-option:last-child {
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

/* =============================
   Modals (Next-Gen)
   ============================= */
#previewOverlay, #pdfSettingsModal, #formatSelectionModal, #loadingIndicator, #consentBanner, .modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: grid;
  place-items: center;
  background: color-mix(in oklab, black 40%, transparent);
  backdrop-filter: blur(8px);
  opacity: 0;
  pointer-events: none;
  transition: all 0.4s var(--ease-smooth);
}

#previewOverlay.active, #pdfSettingsModal.active, #formatSelectionModal.active, #loadingIndicator.active, #consentBanner.active, .modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.modal-container {
  width: min(640px, 92vw);
  background: var(--panel);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-2xl);
  box-shadow: 
    0 32px 64px color-mix(in oklab, var(--shadow-color) 30%, transparent),
    inset 0 1px 0 color-mix(in oklab, white 20%, transparent);
  padding: var(--space-6);
  transform: scale(0.8) translateY(40px);
  transition: all 0.4s var(--ease-spring);
  backdrop-filter: blur(20px);
  position: relative;
  overflow: hidden;
}

.modal-container::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, 
    color-mix(in oklab, var(--accent) 3%, transparent) 0%,
    transparent 50%);
  pointer-events: none;
}

#pdfSettingsModal.active .modal-container,
#formatSelectionModal.active .modal-container,
#previewOverlay.active .modal-container,
.modal-overlay.active .modal-container {
  transform: scale(1) translateY(0);
}

.modal-header { 
  display: flex; 
  align-items: center; 
  justify-content: space-between; 
  margin-bottom: var(--space-5);
  position: relative;
  z-index: 2;
}

.modal-title { 
  font-size: 1.3rem; 
  font-weight: 600;
  background: linear-gradient(135deg, var(--text), var(--accent));
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.modal-body { 
  display: grid; 
  gap: var(--space-4);
  position: relative;
  z-index: 2;
}

.modal-footer { 
  display: flex; 
  gap: var(--space-3); 
  justify-content: flex-end; 
  margin-top: var(--space-5);
  position: relative;
  z-index: 2;
}

.modal-body .row { 
  display: grid; 
  grid-template-columns: 1fr 1fr; 
  gap: var(--space-4); 
}

.modal-body input[type="text"], .modal-body select, .modal-body input[type="checkbox"] {
  width: 100%; 
  padding: 12px 16px;
  border-radius: var(--radius-lg); 
  border: 1px solid var(--border-color);
  background: var(--bg); 
  color: var(--text);
  transition: all 0.3s var(--ease-smooth);
}

.modal-body input[type="text"]:focus, .modal-body select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in oklab, var(--accent) 20%, transparent);
}

.modal-body .check { 
  display: flex; 
  align-items: center; 
  gap: 12px;
  padding: var(--space-3);
  border-radius: var(--radius-lg);
  background: color-mix(in oklab, var(--bg) 50%, transparent);
  border: 1px solid var(--glass-border);
  transition: all 0.3s var(--ease-smooth);
}

.modal-body .check:hover {
  background: color-mix(in oklab, var(--accent) 5%, transparent);
  border-color: var(--accent);
}

/* Format Selection Modal specific styles */
.format-checkbox {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border-radius: var(--radius-lg);
  transition: all 0.3s var(--ease-smooth);
  position: relative;
  overflow: hidden;
}

.format-checkbox::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, 
    color-mix(in oklab, var(--accent) 8%, transparent),
    color-mix(in oklab, var(--green) 6%, transparent));
  opacity: 0;
  transition: opacity 0.3s var(--ease-smooth);
}

.format-checkbox:hover::before {
  opacity: 1;
}

.format-checkbox input[type="checkbox"] {
  width: auto;
  margin: 0;
  scale: 1.1;
}

.format-checkbox label {
  font-size: 0.95rem;
  cursor: pointer;
  position: relative;
  z-index: 2;
}

/* =============================
   Loading Indicator (futuristisch)
   ============================= */
#loadingIndicator .box {
  display: flex; 
  align-items: center; 
  gap: 16px; 
  padding: 24px 32px;
  background: var(--glass-bg); 
  backdrop-filter: blur(20px);
  border-radius: var(--radius-2xl); 
  box-shadow: var(--surface-elevation);
  border: 1px solid var(--glass-border);
}

#loadingIndicator .spinner {
  width: 32px; 
  height: 32px;
  background: conic-gradient(from 0deg, var(--accent), var(--green), var(--purple), var(--accent));
  border-radius: 50%;
  position: relative;
  animation: spinGlow 2s linear infinite;
}

#loadingIndicator .spinner::before {
  content: '';
  position: absolute;
  inset: 4px;
  background: var(--panel);
  border-radius: 50%;
}

#loadingIndicator .loading-text {
  font-weight: 500;
  color: var(--text);
  position: relative;
}

@keyframes spinGlow {
  0% { 
    transform: rotate(0deg);
    filter: hue-rotate(0deg);
  }
  100% { 
    transform: rotate(360deg);
    filter: hue-rotate(360deg);
  }
}

/* Consent Banner */
#consentBanner {
  place-items: end center;
  padding: var(--space-4);
  background: transparent;
  backdrop-filter: none;
}

.consent-container {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  padding: var(--space-5);
  border-radius: var(--radius-2xl);
  box-shadow: var(--surface-elevation);
  border: 1px solid var(--glass-border);
  width: min(800px, 95vw);
  position: relative;
  overflow: hidden;
}

.consent-container::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, 
    color-mix(in oklab, var(--accent) 4%, transparent) 0%,
    transparent 50%);
  pointer-events: none;
}

.consent-text {
  position: relative;
  z-index: 2;
}

.consent-actions {
  display: flex;
  gap: var(--space-3);
  position: relative;
  z-index: 2;
}

/* =============================
   Empty State & Hilfsklassen
   ============================= */
#emptyState {
  display: grid; 
  place-items: center; 
  gap: var(--space-4);
  text-align: center; 
  color: var(--muted);
  padding: var(--space-6);
  border: 2px dashed color-mix(in oklab, var(--border-color) 40%, transparent); 
  border-radius: var(--radius-2xl);
  background: 
    linear-gradient(135deg, 
      color-mix(in oklab, var(--panel) 30%, transparent) 0%,
      color-mix(in oklab, var(--panel) 10%, transparent) 100%),
    radial-gradient(circle at 30% 70%, 
      color-mix(in oklab, var(--accent) 3%, transparent) 0%,
      transparent 60%);
  position: relative;
  overflow: hidden;
}

#emptyState::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(45deg, 
    transparent 30%, 
    color-mix(in oklab, var(--accent) 2%, transparent) 50%, 
    transparent 70%);
  animation: shimmerSlow 4s ease-in-out infinite;
}

@keyframes shimmerSlow {
  0%, 100% { opacity: 0; }
  50% { opacity: 1; }
}

.hidden { 
  display: none !important; 
}

.muted { 
  color: var(--muted); 
  font-size: 0.9rem; 
}

/* =============================
   FAQ Section (modernisiert)
   ============================= */
.faq-section {
  margin-top: var(--space-6);
  padding: var(--space-6);
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-2xl);
  position: relative;
  overflow: hidden;
}

.faq-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 80% 20%, 
    color-mix(in oklab, var(--accent) 4%, transparent) 0%,
    transparent 60%);
  pointer-events: none;
}

.faq-section h2 {
  text-align: center;
  margin-top: 0;
  margin-bottom: var(--space-5);
  font-size: 1.8rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--text), var(--accent));
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  position: relative;
  z-index: 2;
}

.privacy-notice {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
  padding: var(--space-5);
  background: linear-gradient(135deg, 
    color-mix(in oklab, var(--accent) 8%, transparent) 0%,
    color-mix(in oklab, var(--green) 6%, transparent) 100%);
  border-radius: var(--radius-2xl);
  border: 1px solid color-mix(in oklab, var(--accent) 25%, transparent);
  margin-bottom: var(--space-5);
  position: relative;
  overflow: hidden;
  z-index: 2;
}

.privacy-notice::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, 
    transparent 0%, 
    color-mix(in oklab, white 10%, transparent) 50%, 
    transparent 100%);
  animation: privacyShimmer 3s ease-in-out infinite;
}

@keyframes privacyShimmer {
  0%, 100% { left: -100%; }
  50% { left: 100%; }
}

.privacy-notice i {
  font-size: 2rem;
  color: var(--accent);
  margin-top: 4px;
  position: relative;
  z-index: 2;
}

.privacy-notice strong {
  display: block;
  margin-bottom: var(--space-2);
  color: var(--text);
  font-size: 1.1rem;
  position: relative;
  z-index: 2;
}

.privacy-notice p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.6;
  position: relative;
  z-index: 2;
}

.faq-list {
  position: relative;
  z-index: 2;
}

.faq-list details {
  border-bottom: 1px solid var(--glass-border);
  padding: var(--space-4) 0;
  transition: all 0.3s var(--ease-smooth);
}

.faq-list details:first-of-type {
  border-top: 1px solid var(--glass-border);
}

.faq-list details:hover {
  background: color-mix(in oklab, var(--accent) 3%, transparent);
  border-radius: var(--radius-lg);
  padding-left: var(--space-3);
  padding-right: var(--space-3);
}

.faq-list summary {
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-2);
  border-radius: var(--radius-md);
  transition: all 0.3s var(--ease-smooth);
}

.faq-list summary::-webkit-details-marker {
  display: none;
}

.faq-list summary::after {
  content: '+';
  font-size: 1.5rem;
  font-weight: 300;
  color: var(--accent);
  transition: all 0.3s var(--ease-spring);
  width: 24px;
  height: 24px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: color-mix(in oklab, var(--accent) 10%, transparent);
}

.faq-list summary:hover {
  color: var(--accent);
}

.faq-list details[open] summary::after {
  transform: rotate(45deg);
  background: var(--accent);
  color: white;
}

.faq-list details[open] p {
  animation: expandAnswer 0.5s var(--ease-smooth);
}

.faq-list p {
  margin-top: var(--space-4);
  color: var(--muted);
  line-height: 1.7;
  padding-left: var(--space-4);
  border-left: 3px solid color-mix(in oklab, var(--accent) 20%, transparent);
}

@keyframes expandAnswer {
  from { 
    opacity: 0; 
    transform: translateY(-10px);
    max-height: 0;
  }
  to { 
    opacity: 1; 
    transform: translateY(0);
    max-height: 200px;
  }
}

/* =============================
   Scroll Container Enhancement
   ============================= */
.images-scroll-container {
  position: relative;
}

.images-scroll-container::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 20px;
  background: linear-gradient(to bottom, 
    var(--bg) 0%, 
    transparent 100%);
  opacity: 0;
  transition: opacity 0.3s var(--ease-smooth);
  pointer-events: none;
  z-index: 1;
}

.images-scroll-container.scrolled::before {
  opacity: 1;
}

/* =============================
   Performance Optimizations
   ============================= */
.image-card, .btn, .image-action-btn {
  will-change: transform;
}

.image-card:hover, .btn:hover, .image-action-btn:hover {
  will-change: auto;
}

/* =============================
   Responsive Design (erweitert)
   ============================= */
@media (max-width: 768px) {
  .container {
    padding: var(--space-4) var(--space-3);
  }

  .app-header__limiter {
    flex-wrap: wrap;
    justify-content: space-between;
  }
  
  .app-header__leading {
    display: none; /* Auf kleinen Screens ausblenden */
  }

  .app-header__title-container {
    flex-basis: 100%;
    order: -1; /* Titel nach oben */
    text-align: center;
    margin-bottom: var(--space-3);
  }
  
  h1.app-title {
    white-space: normal;
  }

  .header-actions {
    flex: 1;
    justify-content: center;
  }
  
  #statusBar {
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-3);
    padding: var(--space-3);
  }
  
  #statusBar .header-spacer {
    display: none;
  }
  
  #statusBar .stat {
    justify-content: center;
  }
  
  #imageContainer {
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: var(--space-4);
  }
  
  .image-card:hover {
    transform: translateY(-6px) scale(1.01);
  }
  
  .modal-container {
    width: 95vw;
    padding: var(--space-4);
  }
  
  .modal-body .row {
    grid-template-columns: 1fr;
  }
  
  .footer-links {
    gap: var(--space-3);
  }
  
  .footer-links a {
    font-size: 0.85rem;
  }

  .faq-section {
    padding: var(--space-4);
  }

  .faq-section h2 {
    font-size: 1.5rem;
  }

  .privacy-notice {
    flex-direction: column;
    gap: var(--space-3);
    text-align: center;
  }

  .privacy-notice i {
    font-size: 1.5rem;
    margin-top: 0;
  }

  #dropArea {
    min-height: 200px;
    padding: var(--space-5);
  }

  .btn:hover::before {
    width: 200px;
    height: 200px;
  }
}

@media (max-width: 480px) {
  .app-header__title-container {
    margin-bottom: var(--space-2);
  }

  h1.app-title {
    font-size: 1rem;
  }
  
  #imageContainer {
    grid-template-columns: 1fr;
    gap: var(--space-3);
  }
  
  .footer-container {
    text-align: center;
  }
  
  .footer-links {
    flex-direction: column;
    gap: var(--space-2);
  }

  .consent-container {
    flex-direction: column;
    gap: var(--space-3);
    text-align: center;
  }

  .faq-list summary {
    font-size: 0.9rem;
  }

  .faq-list p {
    font-size: 0.85rem;
    padding-left: var(--space-3);
  }
}

/* =============================
   Dark Mode Specific Enhancements
   ============================= */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --surface-elevation: 0 8px 32px color-mix(in oklab, black 40%, transparent);
    --surface-hover: 0 16px 48px color-mix(in oklab, black 60%, transparent);
  }
}

/* =============================
   Print Styles
   ============================= */
@media print {
  .app-header, .app-footer, #statusBar, .image-actions {
    display: none !important;
  }
  
  .image-card {
    break-inside: avoid;
    box-shadow: none;
    border: 1px solid #ccc;
  }
  
  body {
    background: white !important;
  }
}