:root {
  --bg: #07110f;
  --bg-2: #0d1a17;
  --surface: #fbfff8;
  --surface-2: #eef6f0;
  --ink: #121716;
  --muted: #64706c;
  --line: #dce8e0;
  --teal: #18d7c1;
  --teal-dark: #087f75;
  --lime: #c8f35d;
  --coral: #ff6c5c;
  --violet: #7b61ff;
  --warning: #ffb84f;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.28);
  --radius: 8px;
  --ease: cubic-bezier(0.2, 0.8, 0.2, 1);
  color-scheme: dark;
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  background: var(--bg);
}

body {
  min-height: 100vh;
  margin: 0;
  overflow-x: hidden;
  color: var(--surface);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  letter-spacing: 0;
  background:
    linear-gradient(120deg, rgba(24, 215, 193, 0.08), transparent 36%),
    linear-gradient(180deg, #07110f 0%, #0c1715 54%, #101513 100%);
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -3;
  content: "";
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: linear-gradient(to bottom, black, transparent 74%);
}

button,
input {
  font: inherit;
}

button {
  border: 0;
}

svg {
  width: 1.1em;
  height: 1.1em;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2;
}

#signal-canvas {
  position: fixed;
  inset: 0;
  z-index: -2;
  width: 100%;
  height: 100%;
  pointer-events: none;
  opacity: 0.7;
}

.app-shell {
  width: min(1180px, calc(100% - 24px));
  margin: 0 auto;
  padding: 16px 0 28px;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 0;
  backdrop-filter: blur(14px);
}

.brand {
  display: inline-flex;
  align-items: center;
  min-width: 0;
  gap: 10px;
  color: inherit;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  flex: 0 0 auto;
  width: 42px;
  height: 42px;
  place-items: center;
  color: var(--lime);
  border: 1px solid rgba(200, 243, 93, 0.38);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.06);
  box-shadow: inset 0 0 28px rgba(24, 215, 193, 0.12);
}

.brand-mark svg {
  width: 28px;
  height: 28px;
}

.brand-mark path:first-child {
  stroke: var(--teal);
}

.brand-copy {
  display: grid;
  min-width: 0;
  line-height: 1.1;
}

.brand-copy strong {
  font-size: 0.98rem;
  font-weight: 820;
}

.brand-copy span {
  overflow: hidden;
  color: rgba(251, 255, 248, 0.66);
  font-size: 0.75rem;
  font-weight: 650;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.topbar-actions {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.signal-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 36px;
  padding: 0 10px;
  color: rgba(251, 255, 248, 0.82);
  border: 1px solid rgba(251, 255, 248, 0.12);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.06);
  font-size: 0.78rem;
  font-weight: 740;
}

.signal-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--teal);
  box-shadow: 0 0 0 5px rgba(24, 215, 193, 0.16);
}

.icon-button {
  display: inline-grid;
  width: 38px;
  height: 38px;
  place-items: center;
  color: var(--surface);
  border: 1px solid rgba(251, 255, 248, 0.14);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.08);
  cursor: pointer;
  transition:
    transform 180ms var(--ease),
    background 180ms var(--ease),
    border-color 180ms var(--ease);
}

.icon-button:hover {
  transform: translateY(-1px);
  border-color: rgba(24, 215, 193, 0.38);
  background: rgba(24, 215, 193, 0.13);
}

.quiz-layout {
  display: grid;
  gap: 14px;
}

.main-surface,
.insight-rail {
  border: 1px solid rgba(251, 255, 248, 0.12);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.main-surface {
  position: relative;
  min-height: min(680px, calc(100vh - 112px));
  overflow: hidden;
  color: var(--ink);
  background:
    linear-gradient(150deg, rgba(24, 215, 193, 0.12), transparent 28%),
    linear-gradient(330deg, rgba(255, 108, 92, 0.12), transparent 30%),
    var(--surface);
}

.main-surface::before {
  position: absolute;
  top: 0;
  right: 0;
  left: 0;
  height: 7px;
  content: "";
  background: linear-gradient(90deg, var(--teal), var(--lime), var(--coral), var(--violet));
}

.intro-view,
.quiz-view,
.result-view {
  min-height: inherit;
  padding: clamp(22px, 5vw, 46px);
}

.intro-view {
  display: grid;
  align-content: space-between;
  gap: 28px;
}

.intro-grid {
  display: grid;
  gap: 28px;
}

.intro-copy {
  display: grid;
  gap: 16px;
}

.intro-copy h1,
.question-block h1,
.result-hero h1 {
  margin: 0;
  color: var(--ink);
  font-size: clamp(2.05rem, 9vw, 4.7rem);
  font-weight: 850;
  letter-spacing: 0;
  line-height: 0.94;
}

.intro-copy p,
#questionHelp,
.result-hero p,
.intro-actions p {
  max-width: 64ch;
  margin: 0;
  color: var(--muted);
  font-size: 1rem;
  font-weight: 540;
  line-height: 1.55;
}

.readiness-preview {
  display: grid;
  grid-template-columns: 96px 1fr;
  align-items: center;
  gap: 16px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.7);
}

.preview-ring {
  display: grid;
  width: 96px;
  height: 96px;
  place-items: center;
  border-radius: 50%;
  background:
    conic-gradient(from 180deg, var(--teal), var(--lime), var(--coral), var(--violet), var(--teal));
  animation: slow-turn 10s linear infinite;
}

.preview-ring span {
  display: grid;
  width: 72px;
  height: 72px;
  place-items: center;
  color: var(--ink);
  border-radius: 50%;
  background: var(--surface);
  font-weight: 900;
}

.readiness-preview ul {
  display: grid;
  gap: 9px;
  margin: 0;
  padding: 0;
  color: var(--ink);
  font-size: 0.88rem;
  font-weight: 760;
  list-style: none;
}

.readiness-preview li {
  display: flex;
  align-items: center;
  gap: 8px;
}

.readiness-preview li span {
  color: var(--teal-dark);
  font-size: 0.72rem;
  font-weight: 900;
}

.intro-actions,
.result-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
}

.primary-button,
.secondary-button,
.ghost-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  gap: 10px;
  padding: 0 18px;
  border-radius: var(--radius);
  font-size: 0.95rem;
  font-weight: 820;
  line-height: 1;
  text-decoration: none;
  cursor: pointer;
  transition:
    transform 180ms var(--ease),
    box-shadow 180ms var(--ease),
    background 180ms var(--ease),
    color 180ms var(--ease),
    border-color 180ms var(--ease);
}

.primary-button {
  color: #06110f;
  background: var(--lime);
  box-shadow: 0 16px 34px rgba(28, 74, 50, 0.18);
}

.primary-button:hover:not(:disabled),
.secondary-button:hover:not(:disabled),
.ghost-button:hover:not(:disabled) {
  transform: translateY(-2px);
}

.primary-button:active:not(:disabled),
.secondary-button:active:not(:disabled),
.ghost-button:active:not(:disabled) {
  transform: translateY(0);
}

.primary-button:disabled {
  color: rgba(18, 23, 22, 0.52);
  background: #d8e5d7;
  cursor: not-allowed;
  box-shadow: none;
}

.secondary-button {
  color: var(--ink);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.72);
}

.ghost-button {
  color: var(--teal-dark);
  background: transparent;
}

.quiz-view {
  display: grid;
  grid-template-rows: auto auto 1fr auto;
  gap: 18px;
}

.question-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  color: var(--muted);
  font-size: 0.8rem;
  font-weight: 850;
  text-transform: uppercase;
}

.question-meta span:last-child {
  color: var(--teal-dark);
}

.progress-track,
.mini-track {
  position: relative;
  height: 8px;
  overflow: hidden;
  border-radius: 999px;
  background: #dfe9e2;
}

.progress-track span,
.mini-track span {
  display: block;
  width: 0%;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--teal), var(--lime), var(--coral));
  transition: width 420ms var(--ease);
}

.question-block {
  display: grid;
  align-content: start;
  gap: 18px;
  padding-top: 10px;
}

.question-block h1 {
  font-size: clamp(1.75rem, 6vw, 3.65rem);
  line-height: 0.98;
}

.option-list {
  display: grid;
  gap: 10px;
}

.option-button {
  position: relative;
  display: grid;
  grid-template-columns: 30px 1fr;
  align-items: start;
  gap: 12px;
  width: 100%;
  min-height: 66px;
  padding: 14px;
  color: var(--ink);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.72);
  text-align: left;
  cursor: pointer;
  transition:
    transform 180ms var(--ease),
    border-color 180ms var(--ease),
    background 180ms var(--ease),
    box-shadow 180ms var(--ease);
}

.option-button::before {
  display: grid;
  width: 30px;
  height: 30px;
  place-items: center;
  content: attr(data-letter);
  color: var(--teal-dark);
  border: 1px solid rgba(8, 127, 117, 0.28);
  border-radius: 50%;
  background: #f4fbf7;
  font-size: 0.78rem;
  font-weight: 900;
}

.option-button:hover {
  transform: translateY(-1px);
  border-color: rgba(8, 127, 117, 0.32);
  background: #ffffff;
}

.option-button[aria-checked="true"] {
  border-color: var(--teal-dark);
  background: linear-gradient(90deg, rgba(24, 215, 193, 0.18), rgba(255, 255, 255, 0.92));
  box-shadow: 0 18px 38px rgba(15, 66, 58, 0.12);
}

.option-button[aria-checked="true"]::before {
  color: #06110f;
  border-color: transparent;
  background: var(--lime);
}

.option-text {
  min-width: 0;
  font-size: 0.98rem;
  font-weight: 700;
  line-height: 1.34;
}

.quiz-actions {
  position: sticky;
  bottom: 0;
  display: grid;
  grid-template-columns: 1fr 1.25fr;
  gap: 10px;
  padding-top: 12px;
  background: linear-gradient(to top, var(--surface) 72%, rgba(251, 255, 248, 0));
}

.result-view {
  display: grid;
  align-content: start;
  gap: 24px;
}

.result-hero {
  display: grid;
  align-items: center;
  gap: 18px;
}

.result-gauge {
  display: grid;
  width: min(48vw, 168px);
  aspect-ratio: 1;
  place-items: center;
  border-radius: 50%;
  background: conic-gradient(var(--teal) 0deg, var(--lime) 0deg, #dde8df 0deg);
  box-shadow: inset 0 0 0 1px rgba(18, 23, 22, 0.08);
  transition: background 700ms var(--ease);
}

.result-gauge span {
  display: grid;
  width: 72%;
  height: 72%;
  place-items: center;
  color: var(--ink);
  border-radius: 50%;
  background: var(--surface);
  font-size: clamp(1.65rem, 8vw, 2.55rem);
  font-weight: 900;
}

.result-label {
  display: block;
  margin-bottom: 9px;
  color: var(--teal-dark);
  font-size: 0.78rem;
  font-weight: 900;
  text-transform: uppercase;
}

.result-hero h1 {
  font-size: clamp(1.95rem, 8vw, 4rem);
}

.result-grid {
  display: grid;
  gap: 12px;
}

.result-panel {
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.72);
}

.result-panel h2,
.rail-section h2 {
  margin: 0 0 12px;
  color: inherit;
  font-size: 0.88rem;
  font-weight: 900;
  text-transform: uppercase;
}

.area-results,
.mini-areas {
  display: grid;
  gap: 12px;
}

.area-row {
  display: grid;
  gap: 7px;
}

.area-row header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  color: var(--ink);
  font-size: 0.88rem;
  font-weight: 820;
}

.area-row header span:last-child {
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}

.area-bar {
  height: 9px;
  overflow: hidden;
  border-radius: 999px;
  background: #e2ebe4;
}

.area-bar span {
  display: block;
  width: 0%;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--teal), var(--lime));
  transition: width 560ms var(--ease);
}

.focus-list {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.focus-list li {
  padding-left: 14px;
  color: var(--ink);
  border-left: 3px solid var(--coral);
  font-size: 0.94rem;
  font-weight: 690;
  line-height: 1.45;
}

.insight-rail {
  display: grid;
  gap: 10px;
  align-content: start;
  padding: 10px;
  background: rgba(6, 17, 15, 0.76);
  backdrop-filter: blur(18px);
}

.rail-section {
  padding: 14px;
  border: 1px solid rgba(251, 255, 248, 0.1);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.055);
}

.compact-score {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  align-content: start;
  gap: 10px;
}

.compact-score span {
  color: rgba(251, 255, 248, 0.68);
  font-size: 0.78rem;
  font-weight: 780;
  text-transform: uppercase;
}

.compact-score strong {
  color: var(--lime);
  font-size: 2rem;
  font-weight: 900;
  font-variant-numeric: tabular-nums;
}

.compact-score .mini-track {
  grid-column: 1 / -1;
  background: rgba(251, 255, 248, 0.12);
}

.rail-section h2 {
  color: rgba(251, 255, 248, 0.7);
}

.mini-areas .area-row header {
  color: rgba(251, 255, 248, 0.9);
}

.mini-areas .area-row header span:last-child {
  color: rgba(251, 255, 248, 0.52);
}

.mini-areas .area-bar {
  background: rgba(251, 255, 248, 0.12);
}

.signal-log {
  display: grid;
  gap: 9px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.signal-log li {
  color: rgba(251, 255, 248, 0.74);
  font-size: 0.86rem;
  font-weight: 620;
  line-height: 1.35;
}

.signal-log li::before {
  display: inline-block;
  width: 7px;
  height: 7px;
  margin-right: 8px;
  border-radius: 50%;
  background: var(--teal);
  content: "";
  vertical-align: 1px;
}

.toast {
  position: fixed;
  right: 16px;
  bottom: 16px;
  z-index: 50;
  max-width: min(360px, calc(100vw - 32px));
  padding: 12px 14px;
  color: #06110f;
  border-radius: var(--radius);
  background: var(--lime);
  box-shadow: var(--shadow);
  font-size: 0.9rem;
  font-weight: 820;
  animation: toast-in 260ms var(--ease);
}

[hidden] {
  display: none !important;
}

.entering {
  animation: panel-in 420ms var(--ease);
}

@keyframes panel-in {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes toast-in {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slow-turn {
  to {
    transform: rotate(360deg);
  }
}

@media (min-width: 760px) {
  .app-shell {
    width: min(1180px, calc(100% - 40px));
    padding-top: 22px;
  }

  .main-surface {
    min-height: min(720px, calc(100vh - 124px));
  }

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

  .result-grid {
    grid-template-columns: 1.15fr 0.85fr;
  }

  .insight-rail {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 1040px) {
  .quiz-layout {
    grid-template-columns: minmax(0, 1fr) 332px;
  }

  .intro-grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(270px, 0.85fr);
    align-items: end;
  }

  .insight-rail {
    grid-template-columns: 1fr;
  }

  .intro-view,
  .quiz-view,
  .result-view {
    padding: 52px;
  }

  .option-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .option-button {
    min-height: 98px;
    align-content: start;
  }
}

@media (max-width: 520px) {
  .app-shell {
    width: min(100% - 18px, 440px);
  }

  .brand-copy span,
  .signal-chip {
    display: none;
  }

  .topbar {
    padding: 10px 0;
  }

  .main-surface {
    min-height: calc(100vh - 92px);
  }

  .readiness-preview {
    grid-template-columns: 1fr;
  }

  .preview-ring {
    width: 84px;
    height: 84px;
  }

  .preview-ring span {
    width: 62px;
    height: 62px;
  }

  .quiz-actions {
    margin: 0 -22px -22px;
    padding: 14px 22px 22px;
  }

  .secondary-button,
  .primary-button,
  .ghost-button {
    min-height: 50px;
    padding-inline: 14px;
  }

  .intro-actions .primary-button,
  .result-actions .primary-button,
  .result-actions .secondary-button,
  .result-actions .ghost-button {
    width: 100%;
  }

  .insight-rail {
    box-shadow: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.001ms !important;
  }

  #signal-canvas {
    display: none;
  }
}