/* Concept A: mobile-first local utility */

#hash-status-row[hidden],
#add-more-files[hidden],
#details-stage[hidden],
#receipt-stage[hidden] {
  display: none !important;
}

.compact-header {
  padding-bottom: .35rem;
}

.compact-hero {
  padding-top: 1.25rem;
  padding-bottom: 1.2rem;
}

.compact-hero h1 {
  max-width: 720px;
  margin-bottom: .45rem;
  font-size: clamp(2rem, 7vw, 3.5rem);
  line-height: .98;
}

.compact-hero p {
  max-width: 620px;
  margin: 0;
  font-size: 1rem;
}

.mobile-tool-shell {
  margin-top: .25rem;
}

.simple-stage-heading {
  align-items: flex-start;
  margin-bottom: 1rem;
}

.simple-stage-heading h2 {
  margin-bottom: .25rem;
}

.stage-subcopy {
  margin: 0;
  color: var(--muted, #5f6b73);
  font-size: .92rem;
}

.capture-button {
  box-sizing: border-box;
  min-height: 58px;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: .55rem;
  cursor: pointer;
  text-decoration: none;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}

.single-picker {
  max-width: 100%;
}

.action-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.5rem;
  height: 1.5rem;
  font-size: 1.15rem;
  line-height: 1;
}

.selected-preview-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: .75rem;
  margin-top: .9rem;
}

.selected-preview-grid[hidden] {
  display: none !important;
}

.preview-file {
  position: relative;
  display: block;
  min-width: 0;
  padding: .4rem;
  overflow: hidden;
}

.file-preview {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  border-radius: .55rem;
  background: rgba(7, 27, 44, .07);
  color: var(--muted, #5f6b73);
  font-weight: 800;
  font-size: .75rem;
  letter-spacing: .04em;
}

.file-thumbnail {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.preview-file .file-copy {
  min-width: 0;
  padding: .5rem .15rem .1rem;
}

.preview-file .file-copy strong,
.preview-file .file-copy span {
  display: block;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.preview-file .file-copy strong {
  font-size: .84rem;
}

.preview-file .file-copy span {
  margin-top: .15rem;
  color: var(--muted, #5f6b73);
  font-size: .75rem;
}

.preview-file .icon-button {
  position: absolute;
  top: .55rem;
  right: .55rem;
  min-width: 44px;
  min-height: 44px;
  width: 44px;
  height: 44px;
  border: 1px solid rgba(7, 27, 44, .16);
  background: rgba(255, 255, 255, .94);
  box-shadow: 0 2px 10px rgba(7, 27, 44, .12);
}

#add-more-files {
  margin-top: .75rem;
}

.hash-status {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: .6rem 1rem;
  flex-wrap: wrap;
  margin-top: .85rem;
  padding: .7rem .8rem;
  border-radius: .7rem;
  background: rgba(0, 123, 92, .08);
  color: var(--green-dark, #00644b);
  font-weight: 750;
  font-size: .9rem;
}

.fingerprint-inline {
  margin: 0;
  min-width: 0;
}

.fingerprint-inline > summary {
  cursor: pointer;
  color: inherit;
  font-size: .84rem;
  font-weight: 750;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.fingerprint-inline[open] {
  flex-basis: 100%;
}

.fingerprint-inline code {
  display: block;
  margin-top: .6rem;
  padding-top: .6rem;
  border-top: 1px solid rgba(0, 100, 75, .16);
  color: var(--navy, #071b2c);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  font-size: .78rem;
  line-height: 1.45;
  overflow-wrap: anywhere;
  white-space: pre-wrap;
}

.details-stage {
  border-top: 1px solid rgba(7, 27, 44, .08);
  margin-top: .25rem;
}

.proof-details {
  margin: -.25rem 0 1rem;
  border: 1px solid rgba(7, 27, 44, .09);
  border-radius: .75rem;
  background: rgba(255, 255, 255, .44);
}

.proof-details > summary {
  min-height: 48px;
  box-sizing: border-box;
  display: flex;
  align-items: center;
  padding: .7rem .85rem;
  cursor: pointer;
  color: var(--green-dark, #00644b);
  font-weight: 750;
  list-style-position: inside;
}

.compact-hash-card {
  margin: 0 .7rem .7rem;
}

.prepare-button {
  min-height: 56px;
  margin-top: .25rem;
}

.success-stage > h2 {
  margin-top: .25rem;
}

#receipt-summary dd {
  overflow-wrap: anywhere;
}

#receipt-summary .receipt-hash-label {
  color: var(--green-dark, #00644b);
  font-weight: 800;
}

#receipt-summary .receipt-hash {
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  font-size: .82rem;
  line-height: 1.45;
}

.hash-value-note {
  margin: 0;
  padding: .8rem 1rem 1rem;
  border-top: 1px solid rgba(7, 27, 44, .08);
  color: var(--muted, #5f6b73);
  font-size: .84rem;
  line-height: 1.45;
}

.final-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: .65rem;
}

.final-actions #open-email {
  grid-column: 1 / -1;
  min-height: 58px;
}

.final-actions .secondary-button {
  min-height: 50px;
}

.email-cta-note {
  margin: .45rem 0 0;
  color: var(--muted, #5f6b73);
  font-size: .82rem;
  text-align: center;
}

.attach-note {
  display: block;
  margin-top: .85rem;
  padding: .9rem;
  border: 1px solid rgba(7, 27, 44, .1);
  border-radius: .8rem;
  background: rgba(255, 255, 255, .54);
}

.attach-note p {
  margin: .2rem 0 0;
  color: var(--muted, #5f6b73);
  font-size: .86rem;
  line-height: 1.4;
}

.offline-note {
  margin: .75rem 0 0;
  padding: .7rem .8rem;
  border-radius: .7rem;
  background: rgba(7, 27, 44, .055);
  color: var(--muted, #5f6b73);
  font-size: .86rem;
}

.compact-verify-intro {
  margin-bottom: 1rem;
}

.compact-verify-intro h2 {
  margin-bottom: .3rem;
}

/* The verifier heading receives programmatic focus for accessibility. It is not
   an interactive control, so suppress the browser's default focus rectangle. */
.compact-verify-intro h2[tabindex="-1"]:focus {
  outline: none;
}

.compact-verify-intro p {
  margin: 0;
}

.compact-explanation {
  margin-top: 2.5rem;
}

.file-failed {
  border-color: rgba(160, 30, 30, .3) !important;
}

.file-failed .file-copy span {
  color: var(--danger, #a31f1f);
  font-weight: 700;
}

.noscript-note {
  max-width: 720px;
  margin: 1rem auto;
  padding: 1rem;
  border: 1px solid rgba(7, 27, 44, .15);
  border-radius: .75rem;
  background: white;
  font-family: system-ui, sans-serif;
}

@media (max-width: 700px) {
  .site-header.compact-header {
    padding-top: .75rem;
  }

  .compact-hero {
    padding-top: .7rem;
    padding-bottom: .85rem;
  }

  .compact-hero h1 {
    font-size: clamp(2rem, 10.5vw, 2.8rem);
    letter-spacing: -.035em;
  }

  .compact-hero p {
    font-size: .95rem;
  }

  .mobile-tool-shell {
    border-radius: .9rem;
  }

  .mobile-tool-shell .panel,
  .mobile-tool-shell .stage {
    padding-left: 1rem;
    padding-right: 1rem;
  }

  .tabs .tab {
    min-height: 48px;
  }

  .capture-button {
    min-height: 60px;
    font-size: 1rem;
  }

  .selected-preview-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: .65rem;
  }

  .preview-file .icon-button {
    min-width: 44px;
    min-height: 44px;
    width: 44px;
    height: 44px;
    font-size: 1.25rem;
  }

  .field input,
  .field textarea {
    font-size: 16px;
  }

  .checkbox-row {
    min-height: 48px;
  }

  #receipt-summary .receipt-hash {
    font-size: .78rem;
  }

  .final-actions {
    grid-template-columns: 1fr;
  }

  .final-actions #open-email {
    grid-column: auto;
  }

  .final-actions button,
  .prepare-button,
  #verify-button {
    min-height: 56px;
  }

  .site-footer nav {
    gap: .6rem 1rem;
  }
}

@media (max-width: 340px) {
  .selected-preview-grid {
    grid-template-columns: 1fr;
  }
}