:root {
  --bg: #242628;
  --bg-deep: #141617;
  --panel: rgba(35, 37, 39, 0.68);
  --text: #f0f1ef;
  --muted: #b9bdbb;
  --faint: #858a88;
  --line: rgba(238, 240, 237, 0.34);
  --line-strong: rgba(244, 245, 243, 0.7);
  --safe-top: env(safe-area-inset-top, 0px);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
}

* { box-sizing: border-box; }

html, body {
  width: 100%;
  min-height: 100%;
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Helvetica, Arial, sans-serif;
}

body {
  min-height: 100svh;
  overflow: hidden;
  letter-spacing: 0.01em;
}

button, input { font: inherit; }

button { -webkit-tap-highlight-color: transparent; }

.app {
  position: relative;
  display: grid;
  grid-template-rows: minmax(0, 1fr) auto;
  width: 100%;
  height: 100svh;
  overflow: hidden;
  background:
    radial-gradient(circle at 50% 42%, rgba(255,255,255,0.035), transparent 40%),
    linear-gradient(180deg, #292b2d 0%, var(--bg-deep) 100%);
}

.app::after {
  content: "";
  pointer-events: none;
  position: absolute;
  inset: 0;
  opacity: 0.16;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.92' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.16'/%3E%3C/svg%3E");
  mix-blend-mode: soft-light;
}

.media-stage {
  position: absolute;
  inset: 0;
  overflow: hidden;
  background: #232527;
  transition: opacity 900ms ease, filter 1400ms ease;
}

.camera,
.overlay,
.empty-field,
.capture-flash {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.camera {
  object-fit: cover;
  transform: scaleX(-1);
  filter: grayscale(1) invert(1) contrast(1.15) brightness(.82);
  opacity: 0.88;
  transition: opacity 850ms ease, filter 1600ms ease, transform 450ms ease;
}

.overlay {
  pointer-events: none;
  transform: scaleX(-1);
  opacity: 0;
  transition: opacity 650ms ease, transform 850ms ease;
}

.overlay.is-scanning { opacity: .84; }

.empty-field {
  display: grid;
  place-items: center;
  opacity: 0;
  background:
    radial-gradient(circle at 50% 42%, rgba(255,255,255,.04), transparent 34%),
    linear-gradient(180deg, rgba(44,46,48,.95), rgba(23,25,26,.98));
  transition: opacity 850ms ease;
}

.field-scan-line {
  position: absolute;
  left: 18%;
  right: 18%;
  top: 50%;
  height: 1px;
  opacity: .5;
  background: linear-gradient(90deg, transparent, rgba(244,245,243,.72), transparent);
  box-shadow: 0 0 12px rgba(244,245,243,.14);
  animation: field-scan 6.5s ease-in-out infinite;
}

@keyframes field-scan {
  0%, 100% { transform: translateY(-9vh) scaleX(.55); opacity: .12; }
  45%, 55% { transform: translateY(9vh) scaleX(1); opacity: .48; }
}

.capture-flash {
  opacity: 0;
  background: rgba(232,234,231,.82);
  mix-blend-mode: screen;
  pointer-events: none;
}

.capture-flash.is-active { animation: expose 850ms ease; }

@keyframes expose {
  0% { opacity: 0; }
  22% { opacity: .78; }
  100% { opacity: 0; }
}

.content {
  position: relative;
  z-index: 3;
  align-self: stretch;
  display: flex;
  flex-direction: column;
  min-height: 0;
  padding: calc(26px + var(--safe-top)) 24px 92px;
}

.status-row {
  min-height: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.eyebrow,
.percentage,
.session-status,
.privacy-button {
  color: var(--muted);
  font-size: 11px;
  line-height: 1.35;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.message-block {
  margin-top: auto;
  margin-bottom: auto;
  max-width: 34rem;
  padding: 22px 0;
  text-shadow: 0 1px 18px rgba(0,0,0,.48);
}

.title {
  margin: 0 0 24px;
  max-width: 18ch;
  font-size: clamp(28px, 8vw, 48px);
  font-weight: 500;
  line-height: 1.02;
  letter-spacing: -0.035em;
}

.message,
.secondary {
  white-space: pre-line;
  transition: opacity 420ms ease, transform 420ms ease;
}

.message {
  margin: 0;
  max-width: 28ch;
  font-size: clamp(21px, 5.8vw, 33px);
  font-weight: 400;
  line-height: 1.18;
  letter-spacing: -0.018em;
}

.secondary {
  margin: 18px 0 0;
  max-width: 34ch;
  color: var(--muted);
  font-size: clamp(14px, 3.8vw, 18px);
  line-height: 1.45;
}

.message.is-changing,
.secondary.is-changing {
  opacity: 0;
  transform: translateY(5px);
}

.progress-wrap {
  position: absolute;
  left: 24px;
  right: 24px;
  bottom: 112px;
  height: 1px;
  overflow: visible;
  background: rgba(255,255,255,.09);
}

.progress-bar {
  width: 74%;
  height: 1px;
  background: var(--line-strong);
  box-shadow: 0 0 8px rgba(255,255,255,.2);
  transition: width 2.2s cubic-bezier(.2,.7,.2,1);
}

.actions {
  display: grid;
  gap: 12px;
  width: min(100%, 430px);
}

.primary-button,
.secondary-button,
.text-link,
.privacy-button {
  border: 0;
  cursor: pointer;
}

.primary-button,
.secondary-button {
  width: 100%;
  min-height: 50px;
  padding: 14px 16px;
  border: 1px solid var(--line);
  color: var(--text);
  background: rgba(41,43,45,.56);
  text-align: left;
  letter-spacing: .04em;
}

.primary-button:active,
.secondary-button:active { background: rgba(255,255,255,.08); }

.primary-button:focus-visible,
.secondary-button:focus-visible,
.text-link:focus-visible,
.privacy-button:focus-visible {
  outline: 1px solid rgba(244,245,243,.86);
  outline-offset: 4px;
}

.secondary-button {
  color: var(--muted);
  background: transparent;
}

.text-link,
.privacy-button {
  padding: 0;
  color: var(--muted);
  background: transparent;
  text-decoration: none;
}

.end-session {
  position: absolute;
  left: 24px;
  bottom: 76px;
  z-index: 4;
  font-size: 12px;
  letter-spacing: .06em;
}

.footer {
  position: absolute;
  z-index: 4;
  left: 24px;
  right: 24px;
  bottom: calc(18px + var(--safe-bottom));
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 18px;
}

.privacy-button {
  font-size: 10px;
  letter-spacing: .1em;
}

.session-status {
  max-width: 58%;
  text-align: right;
  font-size: 9px;
  letter-spacing: .08em;
}

.dialog {
  width: min(calc(100% - 36px), 480px);
  padding: 0;
  color: var(--text);
  border: 1px solid var(--line);
  background: #232527;
}

.dialog::backdrop { background: rgba(0,0,0,.72); }

.dialog-inner { padding: 24px; }
.dialog h2 { margin-top: 0; font-size: 20px; font-weight: 500; }
.dialog p { color: var(--muted); line-height: 1.55; }

.is-hidden { display: none !important; }

.has-camera .content {
  background: linear-gradient(180deg, rgba(19,21,22,.08) 0%, rgba(19,21,22,.14) 42%, rgba(19,21,22,.7) 100%);
}

.face-unavailable .camera,
.face-unavailable .overlay { opacity: 0; }
.face-unavailable .empty-field { opacity: 1; }

.is-degrading .camera {
  opacity: .52;
  filter: grayscale(1) invert(1) contrast(.72) brightness(.92) blur(.5px);
  animation: quiet-fall 8s ease-in-out infinite alternate;
}

.is-degrading .overlay { opacity: .34; }

@keyframes quiet-fall {
  from { transform: scaleX(-1) translate3d(0,0,0); }
  to { transform: scaleX(-1) translate3d(1.5px,-1px,0); }
}

.image-deleted .camera,
.image-deleted .overlay { opacity: 0; }
.image-deleted .empty-field { opacity: .42; }

@media (min-width: 720px) {
  .content { padding-left: 7vw; padding-right: 7vw; }
  .footer { left: 7vw; right: 7vw; }
  .end-session { left: 7vw; }
  .progress-wrap { left: 7vw; right: 7vw; }
  .message-block { max-width: 46rem; }
}

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