/* Interaction layer: content stays visible when JavaScript is unavailable. */
html {
  scrollbar-gutter: stable;
}

.reading-progress {
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 100%;
  height: 2px;
  pointer-events: none;
}

.reading-progress span {
  display: block;
  height: 100%;
  background: var(--gold);
  transform: scaleX(0);
  transform-origin: left;
}

.nav {
  position: relative;
}

.nav-indicator {
  position: absolute;
  left: 0;
  bottom: 4px;
  width: 24px;
  height: 2px;
  background: var(--gold);
  opacity: 0;
  pointer-events: none;
  transition: transform 280ms var(--ease), opacity 180ms ease;
}

.nav.motion-nav-ready .nav-indicator {
  opacity: 1;
}

body.single-page .nav.motion-nav-ready a::after {
  content: none;
}

.motion-ready [data-reveal="pending"]:not(.reveal-frame),
.motion-ready .reveal-frame[data-reveal="pending"] > * {
  opacity: 0;
}

body.single-page .hero-portrait img {
  transform: translate3d(var(--portrait-x, 0px), var(--portrait-y, 0px), 0);
  transition: transform 550ms var(--ease);
}

body.single-page .hero-portrait::before {
  transform: translate3d(var(--light-x, 0px), var(--light-y, 0px), 0);
  transition: transform 750ms var(--ease);
}

body.single-page .writing-list-only .article-row {
  transform: none;
  transition: background 200ms ease;
}

.article-row .article-number {
  transition: color 220ms ease;
}

.article-row .article-arrow {
  transition: transform 220ms var(--ease), background 200ms ease, color 200ms ease;
}

body.single-page .button,
.icon-button {
  gap: 9px;
  transition: transform 180ms var(--ease), background 180ms ease, border-color 180ms ease;
}

.button:active,
.icon-button:active {
  transform: scale(0.97);
}

.business-compact .business-row > a {
  position: relative;
  border-bottom-color: transparent;
}

.business-compact .business-row > a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: var(--gold);
  transform: scaleX(0.25);
  transform-origin: left;
  transition: transform 220ms var(--ease);
}

.contact-logo {
  transition: transform 220ms var(--ease);
}

body.single-page .contact-row strong,
.wechat-copy strong {
  transition: color 200ms ease;
}

.contact-email {
  position: relative;
  min-width: 0;
  border-right: 1px solid var(--line);
}

body.single-page .contact-email .contact-row {
  height: 100%;
  padding-right: 68px;
  border-right: 0;
}

.email-copy {
  position: absolute;
  right: 16px;
  top: calc(50% - 20px);
}

.ui-icon {
  display: inline-block;
  flex: 0 0 20px;
  width: 20px;
  height: 20px;
  background: currentColor;
  -webkit-mask: var(--icon) center / contain no-repeat;
  mask: var(--icon) center / contain no-repeat;
}

.icon-copy { --icon: url("./assets/icons/copy.svg"); }
.icon-close { --icon: url("./assets/icons/x.svg"); }
.icon-download { --icon: url("./assets/icons/download.svg"); }
.icon-expand { --icon: url("./assets/icons/maximize-2.svg"); }
[data-copy-state="success"] .icon-copy { --icon: url("./assets/icons/check.svg"); }

.icon-button {
  display: inline-grid;
  place-items: center;
  width: 40px;
  height: 40px;
  padding: 0;
  border: 1px solid rgba(246, 196, 58, 0.24);
  border-radius: 4px;
  background: transparent;
  color: var(--gold);
  cursor: pointer;
}

[data-tooltip] {
  position: relative;
}

.email-copy[data-tooltip] {
  position: absolute;
}

[data-tooltip]::after {
  content: attr(data-tooltip);
  position: absolute;
  z-index: 4;
  right: 0;
  bottom: calc(100% + 8px);
  padding: 6px 9px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: #151515;
  color: var(--cream);
  font: 12px/1.4 system-ui, sans-serif;
  white-space: nowrap;
  opacity: 0;
  translate: 0 3px;
  pointer-events: none;
  transition: opacity 160ms ease, translate 160ms ease;
}

[data-tooltip]:focus-visible::after {
  opacity: 1;
  translate: 0 0;
}

button:focus-visible,
.qr-enlarge:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 4px;
}

.wechat-copy {
  grid-template-columns: 54px minmax(0, 1fr) 24px;
}

.wechat-copy > .ui-icon {
  color: var(--gold);
}

[data-copy-state="success"] .ui-icon {
  color: #6ecac3;
}

.qr-enlarge {
  display: block;
  border-radius: 8px;
  cursor: zoom-in;
}

.qr-enlarge-icon {
  position: absolute;
  right: -10px;
  bottom: -10px;
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  border: 1px solid #dfdfdf;
  border-radius: 4px;
  color: #181818;
  background: #fff;
  transition: transform 200ms var(--ease);
}

.qr-actions .button .ui-icon {
  color: inherit;
}

html.qr-open {
  overflow: hidden;
}

.qr-dialog {
  width: min(460px, calc(100vw - 32px));
  max-height: calc(100svh - 32px);
  margin: auto;
  padding: 24px;
  overflow: auto;
  border: 1px solid rgba(246, 196, 58, 0.3);
  border-radius: 8px;
  background: #10100e;
  color: var(--cream);
  box-shadow: 0 24px 100px #0009;
}

.qr-dialog::backdrop {
  background: rgba(0, 0, 0, 0.78);
  backdrop-filter: blur(6px);
}

.qr-dialog-content {
  display: grid;
  gap: 20px;
}

.qr-dialog-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.qr-dialog-header h2 {
  margin: 0;
  font-size: 24px;
  font-weight: 650;
}

.qr-dialog-header [data-tooltip]::after {
  bottom: auto;
  top: calc(100% + 4px);
}

.qr-dialog-image {
  width: min(100%, 340px, 48svh);
  height: auto;
  aspect-ratio: 1;
  margin: 0 auto;
  padding: 10px;
  border-radius: 4px;
  background: white;
}

.qr-dialog-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.qr-dialog-actions .button {
  flex: 1 1 150px;
  padding: 0 12px;
  font: inherit;
  font-size: 14px;
  cursor: pointer;
}

.dialog-feedback {
  min-height: 20px;
  margin: -8px 0 0;
  color: #6ecac3;
  font-size: 13px;
  text-align: center;
}

.interaction-toast {
  position: fixed;
  z-index: 50;
  left: 50%;
  bottom: max(24px, env(safe-area-inset-bottom));
  width: max-content;
  max-width: calc(100% - 32px);
  padding: 12px 20px;
  border: 1px solid rgba(110, 202, 195, 0.45);
  border-radius: 4px;
  background: #141815;
  color: var(--cream);
  font-size: 14px;
  line-height: 1.5;
  text-align: center;
  opacity: 0;
  transform: translate(-50%, 10px);
  pointer-events: none;
  transition: transform 200ms var(--ease), opacity 200ms ease;
}

.interaction-toast.is-visible {
  opacity: 1;
  transform: translate(-50%, 0);
}

.copy-fallback {
  position: fixed;
  left: 0;
  top: 0;
  opacity: 0;
  pointer-events: none;
}

.article-row:focus-visible .article-number,
.contact-row:focus-visible strong {
  color: var(--gold);
}

.business-compact .business-row > a:focus-visible::after {
  transform: scaleX(1);
}

@media (hover: hover) and (pointer: fine) {
  body.single-page .article-row:hover,
  body.single-page .contact-row:hover {
    background: rgba(246, 196, 58, 0.055);
  }

  .article-row:hover .article-number,
  .contact-row:hover strong,
  .wechat-copy:hover strong {
    color: var(--gold);
  }

  .article-row:hover .article-arrow {
    transform: translate(3px, -3px);
  }

  .business-compact .business-row > a:hover::after {
    transform: scaleX(1);
  }

  .contact-row:hover .contact-logo,
  .wechat-copy:hover .contact-logo {
    transform: translateY(-3px);
  }

  .icon-button:hover {
    border-color: var(--gold);
    background: rgba(246, 196, 58, 0.08);
  }

  [data-tooltip]:hover::after {
    opacity: 1;
    translate: 0 0;
  }

  .qr-enlarge:hover .qr-enlarge-icon {
    transform: scale(1.08);
  }
}

@media (hover: none) {
  body.single-page .button:hover,
  .contact-logo {
    transform: none;
  }

  .article-row:active,
  .contact-row:active {
    background: rgba(246, 196, 58, 0.07);
  }

  body.single-page .button:active {
    transform: scale(0.97);
  }
}

@media (max-width: 760px) {
  .contact-email {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  body.single-page .contact-email .contact-row {
    border-bottom: 0;
  }

  .wechat-copy {
    grid-template-columns: 44px minmax(0, 1fr) 20px;
    gap: 14px;
  }

  .qr-dialog {
    padding: 18px;
  }

  .qr-dialog-actions .button {
    flex-basis: 128px;
    font-size: 13px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto !important; }
  *, *::before, *::after {
    animation: none !important;
    transition: none !important;
  }
  .motion-ready [data-reveal="pending"]:not(.reveal-frame),
  .motion-ready .reveal-frame[data-reveal="pending"] > * { opacity: 1; }
  body.single-page .hero-portrait img,
  body.single-page .hero-portrait::before { transform: none; }
}