:root {
  --bg: #000000;
  --fg: #E8EDF1;
  --fg-dim: #9E9EA5;
  --ice: #AAD5ED;
  --navy-dark: #07275B;
  --blue-mid: #0758A0;
  --accent: #0A99EB;
  --accent-2: #AAD5ED;
  --danger: #ED0412;
  --danger-dark: #5C0710;
  --card: #07090d;
  --card-border: #182236;
  --card-border-hover: #23385a;
  --radius: 14px;
  --ease: cubic-bezier(.19,1,.22,1);
  --dur: 480ms;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  height: 100dvh;
  background: var(--bg);
  color: var(--fg);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  overflow: hidden;
}

* {
  scrollbar-width: thin;
  scrollbar-color: #15151a transparent;
}
*::-webkit-scrollbar {
  width: 5px;
  height: 5px;
}
*::-webkit-scrollbar-track {
  background: transparent;
}
*::-webkit-scrollbar-thumb {
  background-color: #15151a;
  border-radius: 999px;
  border: 1px solid transparent;
  background-clip: padding-box;
}
*::-webkit-scrollbar-thumb:hover {
  background-color: #22222a;
}

h1, h2, .btn, .q-text, .eyebrow {
  font-family: 'Space Grotesk', 'Inter', sans-serif;
}

.bg-glow {
  position: fixed;
  border-radius: 50%;
  filter: blur(140px);
  opacity: 0.1;
  pointer-events: none;
  z-index: 0;
  animation: drift 18s ease-in-out infinite alternate;
}
.bg-glow--one {
  width: 560px; height: 560px;
  background: var(--blue-mid);
  top: -200px; left: -140px;
}
.bg-glow--two {
  width: 460px; height: 460px;
  background: var(--accent);
  bottom: -200px; right: -140px;
  opacity: 0.08;
  animation-delay: -9s;
}
@keyframes drift {
  0% { transform: translate(0, 0) scale(1); }
  100% { transform: translate(30px, 20px) scale(1.08); }
}

.bg-noise {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  opacity: 0.025;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

.top-logo {
  position: fixed;
  top: 20px; left: 32px;
  z-index: 10;
  display: flex;
  align-items: center;
}
.top-logo img {
  height: 44px;
  width: auto;
  opacity: 0.95;
}

.intro-logo {
  height: 120px;
  width: auto;
  margin: 0 auto 36px;
  display: block;
  opacity: 0;
  transform: translateY(16px);
  animation: introReveal 900ms var(--ease) forwards;
  animation-delay: 0ms;
  filter: drop-shadow(0 0 40px rgba(10,153,235,0.25));
}

.outro-logo {
  height: 80px;
  width: auto;
  margin: 0 auto 28px;
  display: block;
  filter: drop-shadow(0 0 30px rgba(10,153,235,0.2));
}

.lang-toggle {
  position: fixed;
  top: 24px; right: 28px;
  z-index: 10;
  display: flex;
  align-items: center;
  gap: 6px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--card-border);
  border-radius: 999px;
  padding: 8px 14px;
  cursor: pointer;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--fg-dim);
  user-select: none;
  backdrop-filter: blur(8px);
  transition: border-color 200ms;
}
.lang-toggle:hover { border-color: var(--card-border-hover); }
.lang-opt { transition: color 200ms, font-weight 200ms; }
.lang-opt.active { color: var(--fg); font-weight: 600; }
.lang-divider { color: var(--card-border-hover); }

.progress-track {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: rgba(255,255,255,0.06);
  z-index: 10;
}
.progress-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--blue-mid), var(--accent), var(--ice));
  transition: width 420ms var(--ease);
}

.stage {
  position: relative;
  width: 100%;
  height: 100vh;
  height: 100dvh;
  z-index: 2;
}

.screen {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 32px 24px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(24px);
  transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease), visibility 0s linear var(--dur);
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
}
.screen--question {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  justify-content: flex-start;
  padding: 0;
  overflow: hidden;
}
.screen.is-active {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease), visibility 0s;
}
.screen.is-leaving {
  opacity: 0;
  transform: translateY(-28px);
  transition: opacity 320ms var(--ease), transform 320ms var(--ease), visibility 0s linear 320ms;
}

.screen-inner {
  max-width: 640px;
  width: 100%;
  text-align: center;
  margin: auto;
}
.screen-inner--question {
  text-align: left;
  flex: 1 1 auto;
  min-height: 0;
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  margin: 0 auto;
  padding: 84px 24px 16px;
  scrollbar-width: thin;
}
.question-center {
  width: 100%;
  margin-top: auto;
  margin-bottom: auto;
}

.step-actions--fixed {
  flex: 0 0 auto;
  max-width: 640px;
  width: 100%;
  margin: 0 auto;
  padding: 16px 24px calc(20px + env(safe-area-inset-bottom));
  background: linear-gradient(to top, var(--bg) 60%, transparent);
}

.eyebrow {
  font-size: 13px;
  letter-spacing: 0.16em;
  color: var(--accent);
  margin: 0 0 18px;
  font-weight: 600;
}

.screen--intro .eyebrow,
.screen--intro .headline,
.screen--intro .subtext,
.screen--intro .btn,
.screen--intro .hint {
  opacity: 0;
  transform: translateY(16px);
  animation: introReveal 900ms var(--ease) forwards;
}
.screen--intro .eyebrow { animation-delay: 140ms; }
.screen--intro .headline { animation-delay: 220ms; }
.screen--intro .subtext { animation-delay: 320ms; }
.screen--intro .btn { animation-delay: 440ms; }
.screen--intro .hint { animation-delay: 540ms; }

@keyframes introReveal {
  to { opacity: 1; transform: translateY(0); }
}

.headline {
  font-size: clamp(32px, 5.5vw, 54px);
  line-height: 1.12;
  font-weight: 700;
  margin: 0 0 20px;
  letter-spacing: -0.01em;
}
.headline--sm { font-size: clamp(28px, 4.5vw, 40px); }
.accent {
  background: linear-gradient(90deg, var(--blue-mid), var(--accent), var(--ice));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.subtext {
  font-size: 17px;
  line-height: 1.6;
  color: var(--fg-dim);
  margin: 0 auto 36px;
  max-width: 520px;
}

.hint {
  font-size: 13px;
  color: var(--fg-dim);
  opacity: 0.7;
  margin-top: 18px;
}
.hint--key { margin-top: 14px; text-align: left; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 16px;
  font-weight: 600;
  border-radius: 999px;
  border: none;
  cursor: pointer;
  padding: 15px 28px;
  transition: transform 180ms var(--ease), background 180ms, box-shadow 180ms;
}
.btn--primary {
  background: var(--fg);
  color: #000000;
  box-shadow: 0 0 0 0 rgba(10,153,235,0);
}
.btn--primary:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(10,153,235,0.3); }
.btn--primary:active { transform: translateY(0); }
.btn--primary:disabled {
  opacity: 0.35;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}
.btn--ghost {
  background: transparent;
  color: var(--fg-dim);
  padding: 15px 14px;
}
.btn--ghost:hover { color: var(--fg); }
.btn-arrow { transition: transform 180ms var(--ease); display: inline-block; }
.btn--primary:hover .btn-arrow { transform: translateX(3px); }
.btn-arrow--left { transform: none; }
.btn--ghost:hover .btn-arrow--left { transform: translateX(-3px); }

.check-badge {
  width: 64px; height: 64px;
  margin: 0 auto 28px;
  border-radius: 50%;
  border: 1.5px solid var(--card-border);
  display: flex; align-items: center; justify-content: center;
  font-size: 26px;
  color: var(--accent);
  animation: pop 600ms var(--ease);
}
@keyframes pop {
  0% { transform: scale(0.4); opacity: 0; }
  100% { transform: scale(1); opacity: 1; }
}

.ig-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-top: 8px;
  padding: 12px 22px;
  border-radius: 999px;
  border: 1.5px solid var(--card-border);
  background: var(--card);
  color: var(--fg);
  text-decoration: none;
  font-size: 14.5px;
  font-weight: 600;
  opacity: 0;
  transform: translateY(16px);
  animation: introReveal 900ms var(--ease) forwards;
  animation-delay: 620ms;
  transition: border-color 200ms, background 200ms, transform 180ms;
}
.ig-link:hover {
  border-color: var(--accent);
  background: rgba(10,153,235,0.08);
  transform: translateY(-2px);
}
.ig-icon {
  width: 19px;
  height: 19px;
  color: var(--accent);
  flex: 0 0 auto;
}
.ig-handle {
  color: var(--ice);
  font-weight: 500;
}

.q-index {
  font-size: 14px;
  color: var(--fg-dim);
  margin: 0 0 14px;
  letter-spacing: 0.04em;
  opacity: 1;
  transition: opacity 300ms var(--ease);
}
.q-index.is-fading { opacity: 0; }
.q-index-sep { margin: 0 4px; color: var(--card-border-hover); }

.question-mount {
  margin-bottom: 12px;
  opacity: 1;
  transform: translateY(0);
  transition: opacity 360ms var(--ease), transform 360ms var(--ease);
}
.question-mount.is-swapping-out {
  opacity: 0;
  transform: translateY(-14px);
}
.question-mount.is-swapping-in {
  opacity: 0;
  transform: translateY(14px);
}

.q-text {
  font-size: clamp(22px, 3.4vw, 32px);
  font-weight: 600;
  line-height: 1.35;
  margin: 0 0 8px;
  letter-spacing: -0.01em;
}
.q-optional {
  font-size: 13px;
  color: var(--fg-dim);
  font-weight: 400;
  margin-left: 8px;
}
.q-helper {
  font-size: 14.5px;
  color: var(--fg-dim);
  line-height: 1.5;
  margin: 10px 0 0;
}

.q-input {
  width: 100%;
  background: transparent;
  border: none;
  border-bottom: 2px solid var(--card-border);
  color: var(--fg);
  font-size: 22px;
  font-family: 'Inter', sans-serif;
  padding: 10px 2px;
  margin-top: 24px;
  outline: none;
  transition: border-color 200ms;
}
.q-input::placeholder { color: var(--card-border-hover); }
.q-input:focus { border-color: var(--accent); }

textarea.q-input {
  resize: vertical;
  min-height: 90px;
  font-size: 18px;
  border: 1.5px solid var(--card-border);
  border-radius: var(--radius);
  padding: 14px;
}
textarea.q-input:focus { border-color: var(--accent); }

.option-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 24px;
}
.option-list--grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}
.option-list--grid .option-other-input {
  grid-column: 1 / -1;
}

.option-card {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 15px 18px;
  background: var(--card);
  border: 1.5px solid var(--card-border);
  border-radius: var(--radius);
  cursor: pointer;
  color: var(--fg);
  font-size: 16px;
  text-align: left;
  transition: border-color 180ms, background 180ms, transform 120ms;
  width: 100%;
}
.option-list--grid .option-card {
  padding: 14px 16px;
  font-size: 15px;
  gap: 10px;
}
.option-card:hover { border-color: var(--card-border-hover); background: #0d1420; }
.option-card.is-selected {
  border-color: var(--accent);
  background: rgba(10,153,235,0.1);
}
.option-card:active { transform: scale(0.99); }

.option-key {
  width: 26px; height: 26px;
  flex: 0 0 26px;
  border-radius: 7px;
  border: 1.5px solid var(--card-border);
  display: flex; align-items: center; justify-content: center;
  font-size: 12px;
  color: var(--fg-dim);
}
.option-card.is-selected .option-key {
  border-color: var(--accent);
  color: var(--accent);
}
.option-check {
  width: 20px; height: 20px;
  flex: 0 0 20px;
  border-radius: 6px;
  border: 1.5px solid var(--card-border);
  display: flex; align-items: center; justify-content: center;
  font-size: 12px;
  color: transparent;
  transition: all 150ms;
}
.option-card.is-selected .option-check {
  border-color: var(--accent);
  background: var(--accent);
  color: #000000;
}

.option-other-input {
  margin-top: -2px;
  margin-left: 40px;
}

.yesno-row {
  display: flex;
  gap: 12px;
  margin-top: 24px;
}
.yesno-row .option-card { justify-content: center; }

.scale-row {
  display: flex;
  gap: 10px;
  margin-top: 28px;
}
.scale-btn {
  flex: 1;
  aspect-ratio: 1;
  border-radius: 12px;
  border: 1.5px solid var(--card-border);
  background: var(--card);
  color: var(--fg);
  font-size: 18px;
  font-weight: 600;
  cursor: pointer;
  transition: border-color 180ms, background 180ms, transform 120ms;
}
.scale-btn:hover { border-color: var(--card-border-hover); }
.scale-btn.is-selected {
  border-color: var(--accent);
  background: rgba(10,153,235,0.14);
  color: var(--accent);
}
.scale-labels {
  display: flex;
  justify-content: space-between;
  margin-top: 10px;
  font-size: 13px;
  color: var(--fg-dim);
}

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

.error-msg {
  color: var(--danger);
  font-size: 13.5px;
  margin-top: 12px;
  display: none;
}
.error-msg.is-visible { display: block; }

.shake {
  animation: shake 320ms;
}
@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-6px); }
  75% { transform: translateX(6px); }
}

@media (max-width: 640px) {
  .top-logo { top: 16px; left: 18px; }
  .top-logo img { height: 32px; }
  .lang-toggle { top: 18px; right: 18px; padding: 7px 12px; font-size: 12px; }
  .intro-logo { height: 80px; margin-bottom: 24px; }
  .outro-logo { height: 56px; }

  .screen { padding: 24px 18px; }
  .screen-inner { max-width: 100%; }
  .screen-inner--question { padding: 72px 18px 16px; }
  .step-actions--fixed { padding: 14px 18px calc(16px + env(safe-area-inset-bottom)); }

  .headline { font-size: clamp(26px, 7vw, 36px); }
  .subtext { font-size: 15.5px; margin-bottom: 28px; }
  .btn { padding: 14px 22px; font-size: 15px; }

  .q-text { font-size: clamp(19px, 5.5vw, 24px); line-height: 1.3; }
  .q-helper { font-size: 13.5px; }
  .q-input { font-size: 18px; margin-top: 18px; }
  textarea.q-input { font-size: 16px; }

  .option-list { gap: 8px; margin-top: 18px; }
  .option-list--grid { grid-template-columns: 1fr; }
  .option-card { padding: 13px 14px; font-size: 14.5px; gap: 11px; }
  .option-list--grid .option-card { padding: 13px 14px; font-size: 14.5px; }
  .option-key { width: 22px; height: 22px; flex-basis: 22px; font-size: 11px; }
  .option-check { width: 18px; height: 18px; flex-basis: 18px; }

  .yesno-row { flex-direction: column; margin-top: 18px; }
  .scale-row { gap: 6px; margin-top: 20px; }
  .scale-btn { font-size: 15px; border-radius: 10px; }
  .scale-labels { font-size: 11.5px; }

  .step-actions { gap: 6px; }
  .hint--key { display: none; }
}

@media (max-width: 380px) {
  .option-card { font-size: 13.5px; padding: 12px; }
  .q-text { font-size: 18px; }
}