:root {
  color-scheme: dark;
  --ink: #0d0c0a;
  --document: #171411;
  --document-deep: #13110f;
  --ivory: #f0e7d8;
  --ivory-muted: #c9bcaa;
  --ivory-quiet: #a29584;
  --orange: #c8793c;
  --orange-soft: #dda064;
  --bronze-line: rgba(177, 119, 72, 0.3);
  --bronze-soft: rgba(177, 119, 72, 0.17);
  --danger: #e8a077;
  --focus: #f2c48c;
  --font-serif: Georgia, "Times New Roman", Times, serif;
  --font-sans: ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: ui-monospace, "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  --content-width: 78rem;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  min-width: 20rem;
  background: var(--ink);
}

body {
  position: relative;
  min-height: 100vh;
  min-height: 100svh;
  margin: 0;
  overflow-x: hidden;
  background: var(--ink);
  color: var(--ivory);
  font-family: var(--font-sans);
  line-height: 1.6;
  isolation: isolate;
  text-rendering: optimizeLegibility;
}

/* Two nearly imperceptible tonal registers sit behind the document, not over its text. */
body::after {
  position: fixed;
  z-index: 0;
  top: 0;
  right: 0;
  bottom: 0;
  width: 39%;
  background: rgba(111, 63, 35, 0.045);
  content: "";
  pointer-events: none;
}

body::before {
  position: fixed;
  z-index: 0;
  inset: 0;
  background-image:
    radial-gradient(circle at 20% 30%, rgba(245, 232, 211, 0.38) 0 0.035rem, transparent 0.052rem),
    radial-gradient(circle at 80% 70%, rgba(245, 232, 211, 0.24) 0 0.03rem, transparent 0.047rem);
  background-position: 0 0, 0.18rem 0.21rem;
  background-size: 0.34rem 0.32rem, 0.4rem 0.38rem;
  content: "";
  opacity: 0.06;
  pointer-events: none;
}

main {
  position: relative;
  z-index: 1;
}

button,
input {
  font: inherit;
}

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

button {
  color: inherit;
}

a {
  color: inherit;
}

[hidden] {
  display: none !important;
}

::selection {
  background: var(--orange);
  color: var(--ink);
}

:focus-visible {
  outline: 0.14rem solid var(--focus);
  outline-offset: 0.24rem;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 0.75rem;
  left: 0.75rem;
  padding: 0.65rem 0.9rem;
  background: var(--ivory);
  color: var(--ink);
  font-size: 0.8rem;
  font-weight: 700;
  transform: translateY(-200%);
}

.skip-link:focus {
  transform: translateY(0);
}

.micro-label,
.document-meta,
.document-pagination,
.countdown-kicker,
.countdown-date,
.trace-meta,
.access-reference {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.085em;
  line-height: 1.45;
  text-transform: uppercase;
}

.micro-label,
.countdown-kicker {
  margin: 0;
  color: var(--orange-soft);
  font-weight: 700;
}

.access-view {
  display: grid;
  min-height: 100vh;
  min-height: 100svh;
  place-items: center;
  padding: 1rem;
}

.access-panel {
  width: min(100%, 30.5rem);
  padding: clamp(1.5rem, 7vw, 2.8rem);
  border: 1px solid var(--bronze-line);
  background: var(--document);
}

.access-header h1,
.gift-copy h1 {
  margin: 0;
  color: var(--ivory);
  font-family: var(--font-serif);
  font-weight: 400;
  letter-spacing: -0.035em;
}

.access-header h1 {
  margin-top: 1.2rem;
  font-size: clamp(3rem, 13vw, 4.4rem);
  line-height: 1;
}

.access-intro {
  max-width: 24rem;
  margin: 1rem 0 0;
  color: var(--ivory-muted);
  font-family: var(--font-serif);
  font-size: 1rem;
}

.access-form {
  margin-top: 2rem;
}

.field-group {
  display: grid;
  gap: 0.5rem;
}

.field-group label {
  color: var(--ivory-muted);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.085em;
  text-transform: uppercase;
}

.field-group input {
  width: 100%;
  min-height: 3.1rem;
  padding: 0.7rem 0.85rem;
  border: 1px solid var(--bronze-line);
  border-radius: 0;
  background: #100e0c;
  color: var(--ivory);
  font-family: var(--font-mono);
  font-size: 1rem;
  letter-spacing: 0.12em;
}

.field-group input:hover {
  border-color: rgba(221, 160, 100, 0.58);
}

.field-group input[aria-invalid="true"] {
  border-color: var(--danger);
}

.open-button,
.primary-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3rem;
  border: 1px solid var(--orange);
  border-radius: 0;
  background: var(--orange);
  color: #160f0a;
  font-weight: 750;
  line-height: 1.2;
  text-decoration: none;
}

.open-button {
  width: 100%;
  margin-top: 0.8rem;
  padding: 0.75rem 1rem;
  cursor: pointer;
}

.open-button:hover {
  border-color: var(--orange-soft);
  background: var(--orange-soft);
}

.open-button:active,
.primary-link:active {
  transform: translateY(1px);
}

.form-error,
.noscript-note {
  margin: 0.85rem 0 0;
  font-size: 0.82rem;
}

.form-error {
  color: var(--danger);
}

.noscript-note {
  color: var(--ivory-muted);
}

.access-reference {
  margin: 2rem 0 0;
  padding-top: 0.9rem;
  border-top: 1px solid var(--bronze-soft);
  color: var(--ivory-quiet);
}

.gift-view {
  width: min(100%, calc(var(--content-width) + 2rem));
  margin-inline: auto;
  padding: 0.75rem;
}

.gift-masthead {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 3.25rem;
  gap: 1rem;
  padding: 0 0.25rem 0.65rem;
}

.logout-button {
  min-height: 2.75rem;
  padding: 0.4rem 0;
  border: 0;
  border-bottom: 1px solid transparent;
  background: transparent;
  color: var(--ivory-muted);
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.logout-button:hover {
  border-bottom-color: var(--ivory-muted);
  color: var(--ivory);
}

.gift-document {
  border: 1px solid var(--bronze-line);
  background: var(--document);
}

.document-header {
  display: grid;
  gap: 0.9rem;
  padding: 1rem 1.2rem;
  border-bottom: 1px solid var(--bronze-soft);
}

.document-meta {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.7rem 1rem;
  margin: 0;
}

.document-meta div {
  min-width: 0;
}

.document-meta dt,
.document-meta dd {
  display: inline;
  margin: 0;
}

.document-meta dt {
  color: var(--ivory-quiet);
}

.document-meta dt::after {
  content: ": ";
}

.document-meta dd {
  color: var(--ivory-muted);
}

.document-pagination {
  margin: 0;
  color: var(--ivory-quiet);
}

.gift-layout {
  display: grid;
  grid-template-areas:
    "copy"
    "visuals"
    "closing";
  gap: 1.8rem;
  padding: 1.6rem 1.2rem 1.8rem;
}

.gift-copy {
  grid-area: copy;
  min-width: 0;
}

.gift-copy h1 {
  font-size: clamp(2.25rem, 9.8vw, 4.8rem);
  line-height: 0.99;
}

.gift-copy h1 span {
  display: block;
}

.gift-copy h1 span:first-child {
  white-space: nowrap;
}

.gift-copy h1:focus {
  outline: none;
}

.message-copy {
  display: grid;
  gap: 1rem;
  max-width: 38rem;
  margin-top: 1.5rem;
  color: var(--ivory-muted);
  font-family: var(--font-serif);
  font-size: clamp(1.02rem, 3.7vw, 1.16rem);
  line-height: 1.58;
}

.message-copy p {
  margin: 0;
}

.gift-actions {
  display: grid;
  justify-items: start;
  gap: 0.55rem;
  margin-top: 1.55rem;
}

.primary-link {
  width: 100%;
  padding: 0.8rem 1rem;
  background: transparent;
  color: var(--ivory);
  font-weight: 650;
}

.primary-link:hover {
  border-color: var(--orange-soft);
  background: rgba(200, 121, 60, 0.1);
  color: var(--ivory);
}

.fallback-link {
  display: inline-flex;
  align-items: center;
  min-height: 2.75rem;
  padding: 0.35rem 0;
  color: var(--ivory-muted);
  font-size: 0.82rem;
  text-decoration-color: rgba(221, 160, 100, 0.62);
  text-underline-offset: 0.23rem;
}

.fallback-link:hover {
  color: var(--ivory);
  text-decoration-thickness: 0.12rem;
}

.document-visuals {
  grid-area: visuals;
  display: grid;
  align-content: start;
  justify-items: center;
  width: min(100%, 23rem);
  gap: 0.65rem;
  margin-inline: auto;
}

.atom-link,
.trace-link {
  border: 1px solid transparent;
  text-decoration: none;
}

.atom-link {
  display: grid;
  width: min(100%, 15rem);
  min-height: 14rem;
  place-items: center;
  padding: 0.45rem 0.7rem 0.65rem;
}

.atom-drawing {
  display: block;
  width: min(100%, 12.5rem);
  height: auto;
  overflow: visible;
}

.orbit-path {
  fill: none;
  stroke: var(--orange-soft);
  stroke-linecap: round;
  stroke-width: 1.35;
  vector-effect: non-scaling-stroke;
}

.orbit-node {
  fill: var(--ivory-muted);
}

.atom-core {
  fill: var(--orange);
  transform-box: fill-box;
  transform-origin: center;
}

.instrument-action {
  color: var(--ivory-muted);
  font-size: 0.78rem;
  text-decoration: underline;
  text-decoration-color: var(--bronze-line);
  text-underline-offset: 0.22rem;
}

.trace-link {
  display: block;
  width: 100%;
  min-height: 6.75rem;
  padding: 0.55rem 0.65rem 0.65rem;
}

.detector-trace {
  display: block;
  width: 100%;
  height: auto;
  overflow: visible;
}

.trace-baseline {
  stroke: var(--bronze-line);
  stroke-width: 1;
  vector-effect: non-scaling-stroke;
}

.trace-path {
  fill: none;
  stroke: var(--orange-soft);
  stroke-dasharray: 1000;
  stroke-dashoffset: 0;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.7;
  vector-effect: non-scaling-stroke;
}

.trace-meta {
  display: grid;
  gap: 0.15rem;
  margin-top: 0.25rem;
  color: var(--ivory-quiet);
}

.trace-meta span {
  white-space: nowrap;
}

.trace-meta span:first-child {
  color: var(--ivory-muted);
  text-decoration: underline;
  text-decoration-color: var(--bronze-line);
  text-underline-offset: 0.2rem;
}

.atom-link:hover,
.atom-link:focus-visible,
.trace-link:hover,
.trace-link:focus-visible {
  border-color: var(--bronze-line);
  background: rgba(216, 171, 126, 0.025);
}

.atom-link:hover .orbit-path,
.atom-link:focus-visible .orbit-path,
.trace-link:hover .trace-path,
.trace-link:focus-visible .trace-path {
  stroke-width: 2;
}

.atom-link:hover .atom-core,
.atom-link:focus-visible .atom-core {
  fill: var(--orange-soft);
}

.atom-link:hover .instrument-action,
.atom-link:focus-visible .instrument-action,
.trace-link:hover .trace-meta span:first-child,
.trace-link:focus-visible .trace-meta span:first-child {
  color: var(--ivory);
  text-decoration-thickness: 0.12rem;
}

.gift-closing {
  grid-area: closing;
  max-width: 35rem;
}

.experience-note {
  margin: 0;
  color: var(--ivory-quiet);
  font-family: var(--font-serif);
  font-size: 0.96rem;
  line-height: 1.55;
}

.signature {
  margin: 1.45rem 0 0;
  color: var(--ivory);
  font-family: var(--font-serif);
  font-size: 1.45rem;
  font-style: italic;
}

.countdown-panel {
  display: grid;
  gap: 1rem;
  padding: 1rem 1.2rem;
  border-top: 1px solid var(--bronze-soft);
  background: var(--document-deep);
}

.countdown-date {
  margin: 0.35rem 0 0;
  color: var(--ivory-quiet);
  letter-spacing: 0.045em;
  text-transform: none;
}

.countdown {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.75rem;
  width: min(100%, 19rem);
  color: var(--ivory);
}

.countdown-unit {
  display: grid;
  gap: 0.1rem;
}

.countdown-unit strong {
  font-family: var(--font-mono);
  font-size: clamp(1.15rem, 5vw, 1.45rem);
  font-weight: 400;
  line-height: 1;
}

.countdown-unit span {
  color: var(--ivory-quiet);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.closed-window {
  max-width: 31rem;
}

.closed-window p {
  margin: 0.3rem 0 0;
  color: var(--ivory-muted);
  font-family: var(--font-serif);
  font-size: 0.92rem;
}

.closed-window .countdown-kicker {
  margin: 0;
  color: var(--orange-soft);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
}

.closed-window .countdown-date {
  color: var(--ivory-quiet);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
}

.screening-link[aria-disabled="true"] {
  cursor: not-allowed;
  opacity: 0.46;
}

.screening-link[aria-disabled="true"]:hover {
  border-color: transparent;
  background: transparent;
}

.gift-footer {
  padding: 0.75rem 0.25rem 0;
  color: var(--ivory-quiet);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

@media (max-width: 22.5rem) {
  .gift-copy h1 {
    font-size: 2rem;
  }

  .trace-meta {
    display: grid;
    gap: 0.2rem;
  }
}

@media (min-width: 36rem) {
  .gift-view {
    padding: 1rem;
  }

  .document-header,
  .gift-layout,
  .countdown-panel {
    padding-right: 1.75rem;
    padding-left: 1.75rem;
  }

  .primary-link {
    width: min(100%, 20rem);
  }

}

@media (min-width: 48rem) {
  .document-header {
    padding-top: 1.1rem;
    padding-bottom: 1.1rem;
  }

  .gift-layout {
    grid-template-areas:
      "copy visuals"
      "closing visuals";
    grid-template-columns: minmax(0, 1.15fr) minmax(16rem, 0.85fr);
    column-gap: clamp(2rem, 5vw, 3.75rem);
    row-gap: 1.8rem;
    padding-top: clamp(2.2rem, 5vw, 3.2rem);
    padding-bottom: clamp(2rem, 4vw, 2.8rem);
  }

  .gift-copy h1 {
    font-size: clamp(2.6rem, 4.3vw, 4.5rem);
  }

  .message-copy {
    margin-top: 1.65rem;
  }

  .document-visuals {
    align-self: start;
  }

  .atom-link {
    width: min(100%, 17rem);
    min-height: 15.5rem;
  }

  .atom-drawing {
    width: min(100%, 14.5rem);
  }

  .countdown-panel {
    grid-template-columns: minmax(14rem, 1fr) auto;
    align-items: center;
  }

  .closed-window {
    grid-column: 1 / -1;
  }
}

@media (min-width: 64rem) {
  .document-header {
    grid-template-columns: 1fr auto;
    align-items: center;
    gap: 2rem;
  }

  .document-meta {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .document-pagination {
    text-align: right;
  }

  .gift-layout {
    grid-template-columns: minmax(0, 1.22fr) minmax(20rem, 0.78fr);
  }

  .trace-meta {
    display: flex;
    justify-content: space-between;
    gap: 0.75rem;
  }
}

@media (prefers-reduced-motion: no-preference) {
  .atom-rotor {
    transform-box: fill-box;
    transform-origin: center;
    animation: orbit-drift 34s linear infinite;
  }

  .atom-core {
    animation: core-breathe 5.5s ease-in-out infinite;
  }

  .atom-link:hover .atom-rotor,
  .atom-link:focus-visible .atom-rotor {
    animation-duration: 52s;
  }

  .gift-is-open .trace-path {
    animation: trace-draw 1.65s cubic-bezier(0.2, 0.7, 0.3, 1) 1 both;
  }

  .document-visuals {
    transition: opacity 300ms ease;
  }

  .screening-transition .document-visuals {
    opacity: 0.38;
  }

  .screening-transition .atom-rotor {
    animation-play-state: paused;
  }

  @keyframes orbit-drift {
    to {
      transform: rotate(360deg);
    }
  }

  @keyframes core-breathe {
    0%,
    100% {
      transform: scale(0.92);
    }
    50% {
      transform: scale(1.12);
    }
  }

  @keyframes trace-draw {
    from {
      stroke-dashoffset: 1000;
    }
    to {
      stroke-dashoffset: 0;
    }
  }
}

@media (prefers-reduced-motion: reduce) {
  .atom-rotor,
  .atom-core,
  .trace-path {
    animation: none !important;
  }

  .atom-rotor,
  .atom-core {
    transform: none !important;
  }

  .trace-path {
    stroke-dashoffset: 0 !important;
  }
}