html {
  font-size: 18px;
}

:root {
  --primary-gradient: linear-gradient(135deg, #1e1b4b 0%, #0f172a 50%, #172554 100%);
  --accent-color: #6366f1;
  --accent-hover: #4f46e5;
  --dim-instruktiv: #3b82f6;
  --dim-agil: #10b981;
  --dim-partizipativ: #f59e0b;
  --dim-edtech: #8b5cf6;
  --dim-relational: #ec4899;
  --card-bg: rgba(255, 255, 255, 0.96);
  --glass-border: rgba(255, 255, 255, 0.2);
}

body {
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--primary-gradient);
  background-attachment: fixed;
  color: #1e293b;
  min-height: 100vh;
  font-size: 1.05rem;
  line-height: 1.6;
}

/* Header & Banner */
.app-header {
  background: rgba(15, 23, 42, 0.75);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  color: #fff;
  padding: 1.5rem 0;
}

.sponsor-badge {
  background: linear-gradient(90deg, #3b82f6, #6366f1);
  color: white;
  padding: 0.45rem 1.1rem;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.sponsor-badge:hover {
  color: white;
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(99, 102, 241, 0.4);
}

/* Card Styling */
.quiz-card {
  background: var(--card-bg);
  border-radius: 1.25rem;
  border: 1px solid var(--glass-border);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.25);
  backdrop-filter: blur(10px);
}

/* Progress bar */
.progress-container {
  height: 12px;
  border-radius: 10px;
  background: rgba(226, 232, 240, 0.8);
  overflow: hidden;
}

.progress-bar-custom {
  background: linear-gradient(90deg, #6366f1, #ec4899);
  transition: width 0.4s ease;
}

/* Dimension Badges (Results Page) */
.dimension-tag {
  font-weight: 700;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.35rem 0.75rem;
  border-radius: 6px;
  color: #fff;
}

.tag-instruktiv { background-color: var(--dim-instruktiv); }
.tag-agil { background-color: var(--dim-agil); }
.tag-partizipativ { background-color: var(--dim-partizipativ); }
.tag-edtech { background-color: var(--dim-edtech); }
.tag-relational { background-color: var(--dim-relational); }

/* Slider Group Styling */
.slider-group {
  background: #f8fafc;
  border: 1px solid #cbd5e1;
  border-radius: 1.1rem;
  padding: 1.35rem;
  margin-bottom: 1.25rem;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.slider-group:hover {
  border-color: #94a3b8;
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.05);
}

.option-text {
  font-size: 1.15rem;
  line-height: 1.6;
  color: #0f172a;
  font-weight: 500;
}

.slider-scale-text {
  font-size: 0.95rem;
  font-weight: 600;
  color: #475569;
}

/* Slider Controls & Track */
.form-range {
  height: 12px;
  border-radius: 6px;
}

.form-range::-webkit-slider-thumb {
  width: 28px;
  height: 28px;
  margin-top: -8px;
  background: #6366f1;
  border: 2px solid #ffffff;
  box-shadow: 0 3px 10px rgba(99, 102, 241, 0.45);
  cursor: pointer;
  transition: transform 0.15s ease;
}

.form-range::-webkit-slider-thumb:active {
  transform: scale(1.15);
}

.form-range::-moz-range-thumb {
  width: 28px;
  height: 28px;
  background: #6366f1;
  border: 2px solid #ffffff;
  box-shadow: 0 3px 10px rgba(99, 102, 241, 0.45);
  cursor: pointer;
}

.slider-value-badge {
  min-width: 2.8rem;
  text-align: center;
  font-weight: 700;
  font-size: 1.25rem;
  border-radius: 8px;
  padding: 0.25rem 0.65rem;
  color: white;
  background-color: var(--accent-color);
}

/* Form Controls Accessibility */
.form-select, .form-control {
  font-size: 1.1rem;
  padding: 0.75rem 1rem;
  border-radius: 0.6rem;
}

.form-label {
  font-size: 1.05rem;
}

/* Radar Chart Canvas Container */
.chart-wrapper {
  position: relative;
  max-width: 620px;
  margin: 0 auto;
  padding: 1.75rem;
  background: #ffffff;
  border-radius: 1.25rem;
  box-shadow: 0 10px 25px rgba(0,0,0,0.08);
}

/* Buttons */
.btn-primary-custom {
  background: linear-gradient(135deg, var(--accent-color), var(--accent-hover));
  border: none;
  color: #fff;
  font-weight: 600;
  font-size: 1.15rem;
  padding: 0.85rem 2rem;
  border-radius: 50px;
  box-shadow: 0 6px 20px rgba(99, 102, 241, 0.35);
  transition: all 0.25s ease;
}

.btn-primary-custom:hover {
  background: linear-gradient(135deg, #4f46e5, #4338ca);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(99, 102, 241, 0.45);
}

.btn-outline-custom {
  border: 2px solid var(--accent-color);
  color: var(--accent-color);
  font-weight: 600;
  font-size: 1.1rem;
  padding: 0.8rem 1.8rem;
  border-radius: 50px;
  background: transparent;
  transition: all 0.2s ease;
}

.btn-outline-custom:hover {
  background: var(--accent-color);
  color: #fff;
}

/* School Banner Notice */
.school-notice-banner {
  background: linear-gradient(90deg, #dbeafe, #e0e7ff);
  border-left: 5px solid #3b82f6;
  color: #1e3a8a;
  border-radius: 8px;
  padding: 1rem 1.5rem;
  margin-bottom: 1.5rem;
  font-size: 1.05rem;
}

/* School Leader Box Styling */
.school-leader-box {
  background: linear-gradient(135deg, #1e1b4b 0%, #0f172a 100%) !important;
  color: #ffffff !important;
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.school-leader-box h3, 
.school-leader-box h4 {
  color: #ffffff !important;
}

.school-leader-box p {
  color: #cbd5e1 !important;
}

/* Footer */
footer {
  color: rgba(255, 255, 255, 0.7);
  font-size: 1rem;
  padding: 2.5rem 0;
}