/* Reset & Grundlagen */
*, *::before, *::after {
  box-sizing: border-box;
}
html, body {
  height: 100%;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  font-family: 'Saira Extra Condensed', Arial, sans-serif;
  background: #cce8ed;
  min-height: 100vh;
}
body > main {
  flex-grow: 1;
  flex-shrink: 0;
  flex-basis: auto;
}

/* Header */
.page-header {
  width: 100%;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  text-align: center;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.5);
  color: #fff;
  font-weight: 700;
  font-size: clamp(24px, 6vw, 24px);
  letter-spacing: 2px;
  user-select: none;
  z-index: 1000;
}
.page-header h1 {
  color: #fff;
  text-shadow: 0 0 8px rgba(255, 255, 255, 0.4);
}

.color-scale-left h2 {
  color: #000;
  text-shadow: 0 0 8px rgba(128, 128, 128, 0.9);
}

/* Footer */
.page-footer {
  flex-shrink: 0;
  width: 100%;
  padding: 1em 0;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  text-align: center;
  box-shadow: 0 -2px 8px rgba(0, 0, 0, 0.5);
  color: white;
  font-weight: 500;
  font-size: 1rem;
  letter-spacing: 1px;
  user-select: none;
}

/* Tabs */
.tabs {
  width: 100%;
  max-width: 100vw;
  margin: 0 auto;
}
.tab-nav {
  display: flex;
  border-bottom: 2px solid #333;
  margin-bottom: 1em;
}
.tab-link {
  background: transparent;
  border: none;
  padding: 1em 2em;
  cursor: pointer;
  font-weight: 700;
  color: #fff;
  background-color: rgba(0, 0, 0, 0.2);
  transition: background-color 0.3s ease;
  flex: 1;
  text-align: center;
  user-select: none;
}
.tab-link.active {
  background-color: #005a87;
}
.tab-contents-container {
  width: 100vw;
  max-width: 100%;
  box-sizing: border-box;
  padding: 0 1em;
}
.tab-content {
  width: 100%;
  box-sizing: border-box;
  display: none;
}
.tab-content.active {
  display: block;
}

/* Farbpicker Container (Tab 1) */
.picker-container {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  margin: 0 1em;
  user-select: none;
}

/* Input Felder */
#inputStart,
#inputEnd {
  width: 120px;
  margin-top: 0.4em;
  text-align: center;
  font-weight: 700;
  font-family: monospace;
  font-size: 1rem;
  padding: 0.2em 0;
  color: #444;
  border: 1px solid #ccc;
  border-radius: 4px;
}

/* Beispiel Button */
.sample-btn-container {
  text-align: center;
}
#sample {
  margin-top: 1em;
  cursor: pointer;
  border: none;
  background: linear-gradient(120deg, #ff6a00, #ee0979);
  color: white;
  padding: 0.5em 1.5em;
  border-radius: 8px;
  font-weight: 700;
  font-size: 1.1rem;
  box-shadow: 0 4px 8px rgba(238, 9, 121, 0.4);
  transition: background 0.3s ease;
  user-select: none;
}
.sample {
  margin-top: 1em;
  cursor: pointer;
  border: none;
  background: linear-gradient(120deg, #ff6a00, #ee0979);
  color: white;
  padding: 0.5em 1.5em;
  border-radius: 8px;
  font-weight: 700;
  font-size: 1.1rem;
  box-shadow: 0 4px 8px rgba(238, 9, 121, 0.4);
  transition: background 0.3s ease;
  user-select: none;
}
#sample:hover {
  background: linear-gradient(120deg, #ee0979, #ff6a00);
}

/* Anzeige Farbskalen und Farbkacheln */
.colorBar.boxes {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25em;
  margin-top: 0.5em;
}
.colorBox {
  display: inline-block;
  padding: 0.2em 0.6em;
  border-radius: 4px;
  font-weight: 700;
  user-select: none;
  min-width: 50px;
  text-align: center;
  cursor: pointer;
  color: white; /* Standard weißer Text */
  transition: background-color 0.3s ease, color 0.3s ease;
}
.colorBar.oklch,
.colorBar.normal {
  width: 100%;
  height: 24px;
  border-radius: 6px;
  margin-top: 0.5em;
  box-shadow: inset 0 0 6px rgba(0, 0, 0, 0.1);
}

/* Bild Upload Bereich */
.image-upload {
  display: flex;
  justify-content: center;
  align-items: center; /* optional, vertikal zentrieren */
  margin-bottom: 1em; /* optional Abstand */
}
.upload-button {
  display: inline-block;
  padding: 0.75em 1.5em;
  background: linear-gradient(135deg, #1e90ff, #0066cc);
  color: #fff;
  border-radius: 8px;
  cursor: pointer;
  font-weight: 700;
  font-size: 1.1rem;
  user-select: none;
  text-align: center;
  box-shadow: 0 4px 8px rgba(30, 144, 255, 0.5);
  transition: background 0.3s ease;
  margin-bottom: 1em;
}
.upload-button:hover {
  background: linear-gradient(135deg, #0066cc, #004a99);
}

/* Bildanzeige Container */
.image-scaler-container {
  display: flex;
  gap: 1.5em;
  align-items: flex-start;
  justify-content: center;
  width: 100%;
  box-sizing: border-box;
}
.image-container {
  position: relative;
  width: 50%;
  height: 600px;
  overflow: hidden;
  filter: none;
  transition: filter 0.3s ease;
  display: flex;
  justify-content: center;
  align-items: center;
  border: none;
}
#image-canvas {
  max-width: 100%;
  max-height: 100%;
  display: block;
}

/* Farbinfo Bereiche */
.color-info {
  text-shadow: 0 0 8px rgba(128, 128, 128, 0.9);
  width: 50%;
  max-width: none;
  color: #000;
  background-color: rgba(240, 240, 240, 0.5);
  padding: 0.2em 0.6em;
  border-radius: 8px;
  overflow-y: auto;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  box-shadow: 0 -2px 8px rgba(0, 0, 0, 0.5);
}
#hover-color {
  display: inline-block;
  padding: 0.2em 0.6em;
  border-radius: 4px;
  color: #fff;
  font-weight: 700;
  user-select: none;
}
#hover-color[data-color] {
  background-color: var(--hover-color);
}
#hover-color, #clicked-color {
  display: inline-block;
  padding: 0.2em 0.6em;
  border-radius: 4px;
  color: #fff;
  font-weight: 700;
  user-select: none;
  min-width: 50px;
  text-align: center;
  /* gleiche Hintergrundfarbe wird dynamisch gesetzt */
}
.colorBar.boxes#image-color-scale {
  flex-direction: column;
  max-height: 400px;
  overflow-y: auto;
  display: flex;
  margin-top: 0.5em;
}
.colorBar.boxes#image-color-scale .colorBox {
  margin: 2px 0;
  width: 100%;
  height: 24px;
  line-height: 24px;
  font-size: 0.75rem;
  text-align: center;
  user-select: none;
  color: #000;
  text-shadow: 0 0 2px #fff;
}

/* Farb-Hover Indikator */
#color-hover-indicator {
  position: fixed;
  pointer-events: none;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.8);
  box-shadow: 0 0 5px rgba(0,0,0,0.6);
  mix-blend-mode: normal;
  transform: translate(-50%, -100%);
  z-index: 10000;
  transition: background-color 0.1s ease;
  display: none;
  opacity: 0.9;
}

/* Tabs Container und Layout */
.tab1-container {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 2em;
  padding: 1em;
  box-sizing: border-box;
  height: 100%;
}

/* Farbskala Linke Seite */
.color-scale-left {
  flex: 2;
  display: flex;
  flex-direction: column;
}

/* Farbpicker rechte Seite */
.color-pickers-right {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 1.5em;
  align-items: center;
}