/* =========================================================================
   Paster — 行李寄存 / claim-ticket styling.
   Cool grey ticket stock, printed-form hairline structure, and one bold
   object: the split-flap countdown that physically counts the file down.
   ========================================================================= */

:root {
  --ground: #dee1dd;
  --sheet: #f5f6f3;
  --ink: #15191c;
  --ink-2: #5b6469;
  --rule: #b6bcb6;
  --stamp: #a32b1e;
  --panel: #1b2226;
  --panel-2: #12171a;
  --live: #2e7d52;
  --display: "Bahnschrift SemiCondensed", "Bahnschrift", "DIN Alternate", "Arial Narrow",
    "Helvetica Neue", "Microsoft YaHei", sans-serif;
  --body: "Segoe UI", system-ui, -apple-system, "Microsoft YaHei", "PingFang SC", sans-serif;
  --mono: ui-monospace, "Cascadia Mono", "SF Mono", Consolas, "Liberation Mono", monospace;

  --sheet-radius: 3px;
  --gutter: 1.4rem;
}

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

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--ground);
  color: var(--ink);
  font-family: var(--body);
  font-size: 16px;
  line-height: 1.55;
}

a {
   text-decoration: none
}
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

:focus-visible {
  outline: 2px solid var(--ink);
  outline-offset: 3px;
}

.page {
  width: min(100% - 2rem, 42rem);
  margin: 0 auto;
  padding: 2.6rem 0 4rem;
}

/* ---------------------------------------------------------------- masthead */

.masthead {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 1rem;
  align-items: baseline;
  justify-content: space-between;
  padding-bottom: 0.7rem;
  border-bottom: 1px solid var(--rule);
}

.wordmark {
  margin: 0;
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
  font-family: var(--display);
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.wordmark-sub {
  font-family: var(--body);
  font-size: 0.72rem;
  font-weight: 400;
  letter-spacing: 0.22em;
  color: var(--ink-2);
}

.vitals {
  margin: 0;
  display: flex;
  align-items: center;
  gap: 0.45rem;
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  color: var(--ink-2);
}

.vitals-dot {
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background: var(--ink-2);
}

.vitals[data-state="live"] .vitals-dot {
  background: var(--live);
}

.vitals[data-state="waking"] .vitals-dot {
  background: var(--stamp);
  animation: pulse 1.4s ease-in-out infinite;
}

.vitals[data-state="down"] .vitals-dot {
  background: var(--stamp);
}

/* ------------------------------------------------------------------ thesis */

.thesis {
  margin: 2.4rem 0 1.6rem;
  font-family: var(--display);
  font-size: clamp(1.5rem, 5.4vw, 2.1rem);
  font-weight: 600;
  line-height: 1.28;
  letter-spacing: 0.01em;
}

/* ------------------------------------------------------------------ ticket */

.ticket {
  position: relative;
  background: var(--sheet);
  border: 1px solid var(--rule);
  border-radius: var(--sheet-radius);
  box-shadow: 0 1px 0 rgba(21, 25, 28, 0.06), 0 12px 28px -22px rgba(21, 25, 28, 0.55);
}

.stub {
  padding: var(--gutter);
}

.stub--collect {
  padding-top: 1.1rem;
  position: relative;
}

.stub--collect.is-in {
  animation: reveal 260ms cubic-bezier(0.22, 0.7, 0.2, 1) both;
}

.eyebrow {
  margin: 0 0 0.9rem;
  display: flex;
  align-items: baseline;
  gap: 0.55rem;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-2);
}

.eyebrow-no {
  font-family: var(--display);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--ink);
}

/* ------------------------------------------------------------- perforation */

.perf {
  position: relative;
  height: 1.5rem;
}

.perf::before {
  content: "";
  position: absolute;
  top: 50%;
  left: var(--gutter);
  right: var(--gutter);
  border-top: 2px dashed var(--rule);
}

.notch {
  position: absolute;
  top: 50%;
  width: 1.1rem;
  height: 1.1rem;
  margin-top: -0.55rem;
  border-radius: 50%;
  background: var(--ground);
  box-shadow: inset 0 0 0 1px var(--rule);
}

.notch--left {
  left: -0.56rem;
}

.notch--right {
  right: -0.56rem;
}

/* ---------------------------------------------------------------- dropzone */

.drop {
  position: relative;
  display: grid;
  place-items: center;
  gap: 0.35rem;
  padding: 2.1rem 1rem;
  border: 2px dashed var(--rule);
  border-radius: 2px;
  background: rgba(255, 255, 255, 0.4);
  cursor: pointer;
  text-align: center;
  transition: border-color 140ms ease, background-color 140ms ease, transform 140ms ease;
}

.drop:hover,
.drop:focus-within {
  border-color: var(--ink);
  background: rgba(255, 255, 255, 0.72);
}

.drop.is-over {
  border-color: var(--ink);
  border-style: solid;
  background: rgba(21, 25, 28, 0.05);
}

.drop.is-busy {
  cursor: progress;
  border-style: solid;
  border-color: var(--rule);
  background: rgba(21, 25, 28, 0.03);
}

.drop-icon {
  width: 1.6rem;
  height: 1.6rem;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2315191c' stroke-width='2' stroke-linecap='square'%3E%3Cpath d='M12 19V5M5 12l7-7 7 7'/%3E%3C/svg%3E") center / contain no-repeat;
  opacity: 0.75;
}

.drop-main {
  font-family: var(--display);
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.drop-meta {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--ink-2);
  word-break: break-all;
}

/* ---------------------------------------------------------------- progress */

.progress {
  height: 3px;
  margin-top: 0.85rem;
  background: rgba(21, 25, 28, 0.12);
  overflow: hidden;
}

.progress-bar {
  height: 100%;
  width: 0;
  background: var(--ink);
  transition: width 120ms linear;
}

/* ------------------------------------------------------------------ notice */

.notice {
  margin: 0.9rem 0 0;
  padding-left: 0.7rem;
  border-left: 3px solid var(--stamp);
  font-size: 0.85rem;
  color: var(--stamp);
}

/* ------------------------------------------------------------------ pickup */

.pickup {
  display: flex;
  gap: 0.5rem;
}

.pickup-link {
  flex: 1 1 auto;
  min-width: 0;
  padding: 0.6rem 0.7rem;
  border: 1px solid var(--rule);
  border-radius: 2px;
  background: #fff;
  color: var(--ink);
  font-family: var(--mono);
  font-size: 0.78rem;
}

.pickup-link:focus-visible {
  border-color: var(--ink);
}

.ticket.is-dead .pickup-link {
  color: var(--ink-2);
  text-decoration: line-through;
  text-decoration-color: var(--stamp);
}

.button {
  flex: 0 0 auto;
  padding: 0.6rem 1rem;
  border: 1px solid var(--ink);
  border-radius: 2px;
  background: var(--ink);
  color: var(--sheet);
  font-family: var(--display);
  font-size: 0.92rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  cursor: pointer;
  transition: background-color 140ms ease, color 140ms ease;
}

.button:hover {
  background: transparent;
  color: var(--ink);
}

.button:disabled {
  border-color: var(--rule);
  background: transparent;
  color: var(--ink-2);
  cursor: not-allowed;
}

.pickup-meta {
  margin: 0.8rem 0 0;
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--ink-2);
  word-break: break-all;
}

/* ------------------------------------------------------- split-flap  clock */

.clock {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  margin-top: 1rem;
  padding: 0.75rem 0.9rem;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--panel), var(--panel-2));
  box-shadow: inset 0 0 0 1px #2c353b;
}

.clock-label {
  margin: 0;
  flex: 0 0 auto;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.clock-label-cn {
  font-size: 1.2rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: #d5dcd9;
}

.clock-label-en {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.3em;
  color: #7d8a90;
}

.flap {
  display: flex;
  align-items: center;
  gap: 0.28rem;
  margin-left: auto;
}

.flap-cell {
  position: relative;
  width: clamp(2.3rem, 13vw, 3rem);
  height: clamp(3rem, 17vw, 3.9rem);
  display: grid;
  place-items: center;
  perspective: 320px;
  border-radius: 3px;
  background: linear-gradient(180deg, #262f34 0 49.6%, #171d21 50.4% 100%);
  box-shadow: inset 0 0 0 1px #333d43, 0 2px 0 #0b0e10;
  overflow: hidden;
}

.flap-cell::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  height: 1px;
  background: rgba(0, 0, 0, 0.7);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.06);
}

.flap-digit {
  font-family: var(--mono);
  font-size: clamp(1.7rem, 9vw, 2.3rem);
  font-weight: 700;
  line-height: 1;
  color: #eef0eb;
  font-variant-numeric: tabular-nums;
}

.flap-digit.is-flipping {
  animation: flap 170ms cubic-bezier(0.3, 0.8, 0.4, 1);
}

.flap-colon {
  display: flex;
  flex-direction: column;
  gap: 0.42rem;
  padding: 0 0.05rem;
}

.flap-colon i {
  width: 0.24rem;
  height: 0.24rem;
  border-radius: 50%;
  background: #6d7a80;
}

.clock.is-critical .flap-digit {
  color: #f0b3a8;
}

.clock.is-critical .flap-cell {
  box-shadow: inset 0 0 0 1px #6d2a22, 0 2px 0 #0b0e10;
}

.clock.is-dead .flap-digit {
  color: #6d7a80;
}

.clock.is-dead .flap-cell {
  background: linear-gradient(180deg, #1d2327 0 49.6%, #12171a 50.4% 100%);
}

/* ------------------------------------------------------------------- stamp */

.stamp {
  position: absolute;
  left: 50%;
  top: 3.4rem;
  margin: 0;
  padding: 0.28rem 0.85rem;
  transform: translateX(-50%) rotate(-6deg);
  border: 2px double var(--stamp);
  /* Ink pressed onto the claim line: opaque enough that the struck-through URL
     behind it does not fight the lettering. */
  background: rgba(245, 246, 243, 0.9);
  color: var(--stamp);
  font-family: var(--mono);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  white-space: nowrap;
  animation: stamp-down 260ms cubic-bezier(0.2, 0.9, 0.2, 1) both;
}

/* -------------------------------------------------------------------- foot */

.foot {
  margin-top: 1.6rem;
  display: grid;
  gap: 0.35rem;
  font-size: 0.78rem;
  line-height: 1.6;
  color: var(--ink-2);
}

.foot p {
  margin: 0;
}

/* ------------------------------------------------------------- dead ends */

.page--dead {
  display: grid;
  place-items: center;
}

.dead {
  width: min(100% - 2rem, 30rem);
  padding: 2rem;
  text-align: center;
}

.dead-stamp {
  display: inline-block;
  margin: 0 0 1.4rem;
  padding: 0.25rem 0.8rem;
  transform: rotate(-5deg);
  border: 2px double var(--stamp);
  color: var(--stamp);
  font-family: var(--mono);
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.14em;
}

.dead-title {
  margin: 0 0 0.6rem;
  font-family: var(--display);
  font-size: 1.7rem;
  font-weight: 600;
}

.dead-body {
  margin: 0 0 1.6rem;
  color: var(--ink-2);
  font-size: 0.92rem;
}

.dead-link {
  color: var(--ink);
  font-family: var(--display);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.05em;
}

/* -------------------------------------------------------------- animations */

@keyframes reveal {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }

  to {
    opacity: 1;
    transform: none;
  }
}

@keyframes flap {
  from {
    transform: rotateX(-72deg);
    opacity: 0.3;
  }

  to {
    transform: rotateX(0);
    opacity: 1;
  }
}

@keyframes stamp-down {
  from {
    opacity: 0;
    transform: translateX(-50%) rotate(-6deg) scale(1.5);
  }

  to {
    opacity: 0.94;
    transform: translateX(-50%) rotate(-6deg) scale(1);
  }
}

@keyframes pulse {
  50% {
    opacity: 0.25;
  }
}

@media (prefers-reduced-motion: reduce) {

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}

@media (max-width: 30rem) {
  .pickup {
    flex-direction: column;
  }

  .button {
    width: 100%;
  }

  /* A label beside the digits leaves the readout no room at this width, so the
     panel becomes two rows instead. */
  .clock {
    flex-direction: column;
    align-items: stretch;
    gap: 0.55rem;
  }

  .clock-label {
    flex-direction: row;
    align-items: baseline;
    gap: 0.55rem;
  }

  .flap {
    margin-left: 0;
    align-self: flex-end;
  }

  .flap-cell {
    width: 2.6rem;
    height: 3.4rem;
  }
}