:root {
  --bg: #f3f7ff;
  --panel: rgba(255, 255, 255, 0.82);
  --panel-strong: #ffffff;
  --primary: #2355d8;
  --primary-strong: #163d9c;
  --accent: #ffb703;
  --text: #11243b;
  --text-soft: #53657b;
  --success: #0ca678;
  --warning: #f59e0b;
  --danger: #e11d48;
  --shadow: 0 18px 45px rgba(21, 45, 90, 0.12);
  --radius-lg: 28px;
  --radius-md: 18px;
  --radius-sm: 12px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Inter", sans-serif;
  background:
    radial-gradient(circle at top left, rgba(35, 85, 216, 0.15), transparent 35%),
    linear-gradient(180deg, #edf4ff 0%, #f7f9fd 100%);
  color: var(--text);
}

button,
input,
select {
  font: inherit;
}

.page-shell {
  max-width: 1100px;
  margin: 0 auto;
  padding: 20px 14px 40px;
}

.topbar {
  padding: 4px 0 14px;
  display: flex;
  justify-content: center;
}

.brand-wrap {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  text-align: center;
}

.brand-mark {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  border-radius: 16px;
  background: linear-gradient(135deg, var(--primary), #5cb8ff);
  color: white;
  font-size: 1.5rem;
  box-shadow: var(--shadow);
}

.eyebrow {
  margin: 0 0 4px;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-soft);
}

.eyebrow.accent {
  color: var(--primary);
}

h1,
h2,
h3,
p {
  margin: 0;
}

h1 {
  font-size: clamp(1.5rem, 2vw, 2rem);
}

.app {
  display: grid;
  gap: 18px;
}

.tabbar {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  width: max-content;
  max-width: 100%;
  margin: 0 auto 18px;
  padding: 8px;
  background: rgba(255, 255, 255, 0.65);
  border: 1px solid rgba(35, 85, 216, 0.08);
  border-radius: 999px;
  box-shadow: var(--shadow);
}

.tab {
  padding: 10px 18px;
  border-radius: 999px;
  background: transparent;
  color: var(--text-soft);
  font-weight: 700;
}

.tab.active {
  background: linear-gradient(135deg, var(--primary), #4d7cff);
  color: white;
  box-shadow: 0 12px 18px rgba(35, 85, 216, 0.18);
}

.view-panel {
  display: none;
}

.view-panel.active {
  display: block;
}

.panel {
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid rgba(94, 117, 163, 0.12);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  backdrop-filter: blur(8px);
}

.search-hero {
  display: block;
  width: min(100%, 620px);
  margin: 0 auto;
  padding: 18px;
}

.search-panel {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 14px;
  padding: 14px;
  border-radius: var(--radius-md);
  background: linear-gradient(180deg, rgba(248, 250, 255, 0.96), #eef4ff);
  border: 1px solid rgba(35, 85, 216, 0.08);
}

.plate-input-wrap {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  max-width: 980px;
  min-height: 160px;
  margin: 0 auto;
  background-image: url('kennzeichen.jpg');
  background-size: contain;
  background-repeat: no-repeat;
  background-position: center;
  border-radius: 18px;
  overflow: hidden;
}

#plateInput,
#stateFilter {
  position: relative;
  z-index: 1;
  width: 100%;
  min-height: 160px;
  border: none;
  background: transparent;
  color: #111827;
  padding: 18px 24px;
  font-size: clamp(3rem, 7vw, 7rem);
  font-weight: 900;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  text-align: center;
  text-shadow: 0 5px 0 rgba(0, 0, 0, 0.08);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

#plateInput {
  appearance: none;
  -webkit-appearance: none;
  pointer-events: auto;
}

#plateInput::placeholder {
  color: rgba(17, 24, 39, 0.4);
  letter-spacing: 0.12em;
}

#plateInput::placeholder {
  color: rgba(17, 36, 59, 0.44);
  letter-spacing: 0.1em;
}

#plateInput:focus,
#stateFilter:focus {
  outline: none;
  box-shadow: inset 0 0 0 1px rgba(35, 85, 216, 0.15);
}

button {
  border: none;
  border-radius: 14px;
  cursor: pointer;
  transition: transform 0.18s ease, box-shadow 0.18s ease, opacity 0.18s ease;
}

button:hover {
  transform: translateY(-1px);
}

#searchBtn {
  width: 100%;
  background: linear-gradient(135deg, var(--primary), #4d7cff);
  color: white;
  font-weight: 700;
  padding: 12px 14px;
  box-shadow: 0 12px 24px rgba(35, 85, 216, 0.24);
}

.result-card {
  margin-top: 16px;
  background: linear-gradient(135deg, #f8faff 0%, #ffffff 100%);
  border: 1px solid rgba(35, 85, 216, 0.08);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  padding: 18px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.result-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 7px 10px;
  border-radius: 999px;
  background: rgba(35, 85, 216, 0.1);
  color: var(--primary-strong);
  font-weight: 700;
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.status {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  padding: 7px 10px;
  font-size: 0.72rem;
  font-weight: 700;
}

.status.neutral {
  background: #eaf1ff;
  color: var(--primary-strong);
}

.status.success {
  background: rgba(12, 166, 120, 0.1);
  color: var(--success);
}

.status.warning {
  background: rgba(245, 158, 11, 0.12);
  color: var(--warning);
}

.result-main {
  display: block;
}

.result-details {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.result-details.single-column {
  grid-template-columns: 1fr;
}

.result-details > div {
  padding: 12px 10px;
  border-radius: 14px;
  background: #f5f8ff;
  border: 1px solid rgba(35, 85, 216, 0.06);
}

.meta-label {
  display: block;
  margin-bottom: 6px;
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-soft);
  font-weight: 700;
}

.result-details p {
  font-size: 0.98rem;
  font-weight: 700;
}

.panel-list,
.panel-quiz {
  padding: 18px;
}

.panel-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.panel-head h3,
.panel-quiz h3 {
  font-size: clamp(1.1rem, 2vw, 1.5rem);
  margin-top: 6px;
}

.quiz-header-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.score-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(35, 85, 216, 0.08);
  color: var(--primary-strong);
  font-weight: 700;
}

.score-badge strong {
  font-size: 1.1rem;
}

#stateFilter {
  max-width: 220px;
}

.letter-pager {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.letter-button {
  border-radius: 999px;
  padding: 8px 12px;
  background: rgba(35, 85, 216, 0.08);
  color: var(--primary-strong);
  font-weight: 700;
}

.letter-button.active {
  background: linear-gradient(135deg, var(--primary), #4d7cff);
  color: white;
}

.overview-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.overview-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 12px;
  border-radius: 12px;
  background: #f5f8ff;
  border: 1px solid rgba(35, 85, 216, 0.06);
}

.overview-code {
  min-width: 52px;
  text-align: center;
  padding: 7px 9px;
  border-radius: 10px;
  background: rgba(35, 85, 216, 0.08);
  color: var(--primary-strong);
  font-weight: 800;
}

.overview-copy {
  flex: 1;
  min-width: 0;
}

.overview-copy strong {
  display: block;
  margin-bottom: 4px;
  font-size: 0.9rem;
}

.overview-copy span {
  color: var(--text-soft);
  font-size: 0.78rem;
}

.quiz-question {
  padding: 16px 12px;
  margin-top: 12px;
  background: linear-gradient(135deg, rgba(35, 85, 216, 0.1), rgba(123, 156, 255, 0.15));
  border-radius: 16px;
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  font-weight: 800;
  letter-spacing: 0.12em;
  text-align: center;
}

.quiz-options {
  display: grid;
  gap: 10px;
  margin-top: 16px;
}

.quiz-option {
  width: 100%;
  text-align: left;
  padding: 12px 14px;
  border-radius: 12px;
  background: #f5f8ff;
  color: var(--text);
  font-weight: 600;
  border: 1px solid rgba(35, 85, 216, 0.08);
}

.quiz-option.correct {
  background: rgba(12, 166, 120, 0.1);
  border-color: rgba(12, 166, 120, 0.2);
  color: var(--success);
}

.quiz-option.wrong {
  background: rgba(225, 29, 72, 0.05);
  border-color: rgba(225, 29, 72, 0.15);
  color: var(--danger);
}

.quiz-option:disabled {
  cursor: default;
  opacity: 1;
}

.quiz-footer {
  margin-top: 16px;
  display: flex;
  justify-content: flex-end;
}

.secondary {
  background: rgba(35, 85, 216, 0.08);
  color: var(--primary-strong);
  font-weight: 700;
  padding: 12px 16px;
}

@media (max-width: 820px) {
  .search-hero {
    grid-template-columns: 1fr;
  }

  .result-details {
    grid-template-columns: 1fr;
  }

  .panel-head {
    flex-direction: column;
    align-items: flex-start;
  }

  #stateFilter {
    max-width: 100%;
    width: 100%;
  }

  .overview-list {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 540px) {
  .page-shell {
    padding-left: 10px;
    padding-right: 10px;
  }

  .tabbar {
    width: 100%;
    justify-content: space-between;
  }

  .tab {
    flex: 1;
    padding-left: 10px;
    padding-right: 10px;
  }

  .search-hero,
  .panel-list,
  .panel-quiz,
  .result-card {
    padding-left: 12px;
    padding-right: 12px;
  }

  .input-row {
    flex-direction: column;
  }

  #searchBtn {
    width: 100%;
  }

  .result-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .quiz-question {
    letter-spacing: 0.08em;
  }
}