/* Project ATLAS - Site #7: Farbwähler & Farbpalette Generator (German) */
:root {
  --bg-primary: #0a0e1a;
  --bg-surface: #121829;
  --bg-card: #1c2438;
  --border-subtle: #2d3748;
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --accent-primary: #6366f1;
  --accent-primary-hover: #4f46e5;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Ubuntu, sans-serif;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-sans);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.5rem;
  width: 100%;
}

/* Header */
header {
  border-bottom: 1px solid var(--border-subtle);
  background: rgba(18, 24, 41, 0.85);
  backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 50;
}

.nav-wrapper {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 4rem;
}

.logo-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--text-primary);
  font-weight: 800;
  font-size: 1.25rem;
}

.logo-icon {
  width: 2rem;
  height: 2rem;
  color: var(--accent-primary);
}

nav ul {
  display: flex;
  list-style: none;
  gap: 1.5rem;
}

nav a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  transition: color 0.15s ease;
}

nav a:hover {
  color: var(--accent-primary);
}

/* Tool Section */
.tool-section {
  padding: 3rem 0;
  background: radial-gradient(circle at 50% 20%, rgba(99, 102, 241, 0.08) 0%, transparent 60%);
}

.tool-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 1.5rem;
  padding: 2.5rem;
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.5);
}

.picker-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
  align-items: start;
}

@media (max-width: 840px) {
  .picker-grid {
    grid-template-columns: 1fr;
  }
}

/* Color Preview Box */
.color-preview-box {
  width: 100%;
  height: 220px;
  border-radius: 1rem;
  border: 2px solid var(--border-subtle);
  box-shadow: 0 8px 16px rgba(0,0,0,0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 700;
  font-family: var(--font-mono);
  transition: background-color 0.15s ease, color 0.15s ease;
  position: relative;
  overflow: hidden;
}

.picker-actions {
  display: flex;
  gap: 1rem;
  margin-top: 1.25rem;
}

.color-input-native {
  opacity: 0;
  position: absolute;
  pointer-events: none;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.8rem 1.5rem;
  border-radius: 0.75rem;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all 0.15s ease;
}

.btn-primary {
  background: var(--accent-primary);
  color: #fff;
  flex: 1;
}

.btn-primary:hover {
  background: var(--accent-primary-hover);
}

.btn-secondary {
  background: var(--bg-card);
  color: var(--text-primary);
  border: 1px solid var(--border-subtle);
}

.btn-secondary:hover {
  border-color: var(--accent-primary);
}

/* Values Table */
.values-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.value-item {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 0.75rem;
  padding: 0.85rem 1.25rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.value-label {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-secondary);
  text-transform: uppercase;
}

.value-string {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  color: #fff;
  font-weight: 600;
}

.btn-copy {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--text-secondary);
  padding: 0.35rem 0.75rem;
  border-radius: 0.5rem;
  font-size: 0.85rem;
  cursor: pointer;
}

.btn-copy:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.18);
}

/* Palettes Section */
.palettes-block {
  margin-top: 2.5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border-subtle);
}

.palettes-block h3 {
  font-size: 1.2rem;
  margin-bottom: 1.25rem;
  color: #fff;
}

.palette-row {
  margin-bottom: 1.5rem;
}

.palette-label {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
  font-weight: 600;
}

.swatches-bar {
  display: flex;
  height: 50px;
  border-radius: 0.75rem;
  overflow: hidden;
  border: 1px solid var(--border-subtle);
}

.swatch {
  flex: 1;
  cursor: pointer;
  position: relative;
  transition: transform 0.15s ease;
}

.swatch:hover {
  transform: scaleY(1.1);
  z-index: 2;
  box-shadow: 0 4px 12px rgba(0,0,0,0.4);
}

/* Contrast Checker */
.contrast-box {
  margin-top: 2rem;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 0.75rem;
  padding: 1.25rem;
  display: flex;
  justify-content: space-around;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.contrast-item {
  text-align: center;
}

.contrast-badge {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  border-radius: 9999px;
  font-size: 0.85rem;
  font-weight: 700;
  margin-top: 0.25rem;
}

.badge-pass {
  background: rgba(16, 185, 129, 0.2);
  color: #10b981;
  border: 1px solid #10b981;
}

.badge-fail {
  background: rgba(244, 63, 94, 0.2);
  color: #f43f5e;
  border: 1px solid #f43f5e;
}

/* Editorial Section */
.content-section {
  padding: 4rem 0;
}

.editorial-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 1.25rem;
  padding: 2.5rem;
  margin-bottom: 2.5rem;
}

.editorial-card h2 {
  font-size: 1.75rem;
  color: #fff;
  margin-bottom: 1.25rem;
}

.editorial-card h3 {
  font-size: 1.3rem;
  color: var(--accent-primary);
  margin: 1.75rem 0 0.75rem;
}

.editorial-card p, .editorial-card li {
  color: #cbd5e1;
  font-size: 1.05rem;
  margin-bottom: 1rem;
}

.editorial-card ul, .editorial-card ol {
  padding-left: 1.5rem;
  margin-bottom: 1.25rem;
}

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin: 1.5rem 0;
}

@media (max-width: 768px) {
  .grid-2 {
    grid-template-columns: 1fr;
  }
}

.info-box {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 0.75rem;
  padding: 1.25rem;
}

/* Footer */
footer {
  border-top: 1px solid var(--border-subtle);
  background: var(--bg-surface);
  padding: 3rem 0;
  margin-top: auto;
  font-size: 0.95rem;
  color: var(--text-secondary);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 2.5rem;
}

@media (max-width: 768px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 0.5rem;
}

.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
}

.footer-links a:hover {
  color: var(--accent-primary);
}

/* Toast */
.toast {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background: #10b981;
  color: #022c1e;
  padding: 0.75rem 1.5rem;
  border-radius: 0.5rem;
  font-weight: 700;
  box-shadow: 0 10px 15px -3px rgba(0,0,0,0.5);
  transform: translateY(100px);
  opacity: 0;
  transition: all 0.25s ease;
  z-index: 100;
}

.toast.show {
  transform: translateY(0);
  opacity: 1;
}