:root {
  --checksum-ink: #18211f;
  --checksum-muted: #68736f;
  --checksum-line: #dce4df;
  --checksum-paper: #f5f7f4;
  --checksum-panel: #ffffff;
  --checksum-teal: #0d625b;
  --checksum-teal-dark: #084d48;
  --checksum-lime: #c8ef76;
  --checksum-soft-green: #eaf3ec;
  --checksum-danger: #a33a3a;
}

.file-checksum-page {
  overflow-x: hidden;
  color: var(--checksum-ink);
  background: var(--checksum-paper);
}

.file-checksum-page .wt-common-header--bleed {
  width: 100%;
  margin-left: 0;
}

.file-checksum-page .container {
  width: min(980px, calc(100% - 32px));
}

.checksum-hero {
  padding: 62px 0 36px;
  background: linear-gradient(135deg, #f5f7f4 0%, #e8f2ea 100%);
}

.checksum-hero .container {
  text-align: center;
}

.checksum-hero h1 {
  max-width: none;
  margin: 0 0 14px;
  color: var(--checksum-ink);
  font-size: clamp(32px, 5vw, 52px);
  line-height: 1.25;
  letter-spacing: -0.06em;
}

.checksum-lead {
  max-width: 670px;
  margin: 0 auto 18px;
  color: var(--checksum-muted);
  font-size: 15px;
}

.privacy-notice {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  max-width: 100%;
  margin: 0;
  padding: 8px 14px;
  border: 1px solid #bcd8c1;
  border-radius: 999px;
  color: var(--checksum-teal);
  background: rgba(255, 255, 255, 0.72);
  font-size: 12px;
  font-weight: 700;
}

.privacy-notice::before {
  content: "✓";
  display: inline-grid;
  place-items: center;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  color: var(--checksum-ink);
  background: var(--checksum-lime);
  font-size: 11px;
}

.tool-shell {
  padding: 0 0 56px;
}

.tool-tabs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 5px;
  margin: 0 0 14px;
  padding: 5px;
  border: 1px solid var(--checksum-line);
  border-radius: 14px;
  background: var(--checksum-panel);
  box-shadow: 0 10px 28px rgba(20, 49, 35, 0.06);
}

.tool-tab {
  min-height: 44px;
  padding: 8px 12px;
  border: 0;
  border-radius: 9px;
  color: var(--checksum-muted);
  background: transparent;
  cursor: pointer;
  font-size: 13px;
  font-weight: 700;
  transition: color 0.2s, background 0.2s, transform 0.2s;
}

.tool-tab:hover,
.tool-tab:focus-visible {
  color: var(--checksum-teal);
  background: var(--checksum-soft-green);
}

.tool-tab[aria-selected="true"] {
  color: #fff;
  background: var(--checksum-teal);
  box-shadow: 0 5px 12px rgba(13, 98, 91, 0.18);
}

.tool-panel {
  min-width: 0;
  padding: clamp(22px, 4vw, 34px);
  border: 1px solid var(--checksum-line);
  border-radius: 18px;
  background: var(--checksum-panel);
  box-shadow: 0 14px 34px rgba(20, 49, 35, 0.07);
}

.tool-panel[hidden] {
  display: none;
}

.panel-heading {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(220px, 0.8fr);
  gap: 24px;
  align-items: end;
  margin-bottom: 24px;
}

.panel-heading h2 {
  margin-bottom: 0;
  color: var(--checksum-ink);
  font-size: clamp(25px, 4vw, 34px);
  letter-spacing: -0.06em;
}

.panel-description {
  margin: 0 0 2px;
  color: var(--checksum-muted);
  font-size: 13px;
}

.file-drop-zone {
  display: flex;
  position: relative;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 142px;
  padding: 22px;
  border: 1.5px dashed #a9c9b1;
  border-radius: 15px;
  color: var(--checksum-teal);
  background: #fbfdfb;
  cursor: pointer;
  text-align: center;
  transition: border-color 0.2s, background 0.2s, transform 0.2s;
}

.file-drop-zone::before {
  content: "↥";
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  margin-bottom: 8px;
  border-radius: 50%;
  color: var(--checksum-ink);
  background: var(--checksum-lime);
  font-size: 19px;
  font-weight: 700;
}

.file-drop-zone:hover,
.file-drop-zone:focus-visible,
.file-drop-zone.is-dragging {
  border-color: var(--checksum-teal);
  background: var(--checksum-soft-green);
}

.file-drop-zone.is-dragging {
  transform: translateY(-1px);
}

.drop-title,
.drop-or {
  margin: 0;
}

.drop-title {
  color: var(--checksum-ink);
  font-size: 14px;
  font-weight: 700;
}

.drop-or {
  margin: 3px 0 8px;
  color: var(--checksum-muted);
  font-size: 11px;
}

.file-select-label {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 34px;
  padding: 6px 14px;
  border: 1px solid var(--checksum-ink);
  border-radius: 999px;
  color: #fff;
  background: var(--checksum-ink);
  cursor: pointer;
  font-size: 12px;
  font-weight: 700;
  transition: background 0.2s, border-color 0.2s, transform 0.2s;
}

.file-select-label:hover,
.file-select-label:focus-within {
  border-color: var(--checksum-teal);
  background: var(--checksum-teal);
  transform: translateY(-1px);
}

.visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

.file-info {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 4px 12px;
  align-items: center;
  margin-top: 12px;
  padding: 11px 13px;
  border: 1px solid var(--checksum-line);
  border-radius: 10px;
  background: #fbfdfb;
}

.file-info[hidden] {
  display: none;
}

.file-info-label,
.file-info-size {
  color: var(--checksum-muted);
  font-size: 11px;
}

.file-info-name {
  min-width: 0;
  overflow-wrap: anywhere;
  font-size: 13px;
}

.file-info-size {
  white-space: nowrap;
}

.file-change-button {
  display: flex;
  margin: 10px 0 0 auto;
}

.file-change-button[hidden] {
  display: none;
}

.algorithm-box {
  min-width: 0;
  margin: 25px 0 0;
  padding: 17px;
  border: 1px solid var(--checksum-line);
  border-radius: 13px;
  background: #fbfdfb;
}

.algorithm-box-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

.algorithm-box-heading legend {
  padding: 0;
}

.algorithm-box-heading h3 {
  margin: 0;
  color: var(--checksum-ink);
  font-size: 16px;
  letter-spacing: -0.03em;
}

.algorithm-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.small-action {
  padding: 3px 0;
  border: 0;
  color: var(--checksum-teal);
  background: transparent;
  cursor: pointer;
  font-size: 11px;
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.algorithm-options {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 9px;
  margin-top: 13px;
}

.algorithm-option {
  display: flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  padding: 9px 11px;
  border: 1px solid var(--checksum-line);
  border-radius: 9px;
  color: var(--checksum-ink);
  background: #fff;
  cursor: pointer;
  font-size: 13px;
  transition: border-color 0.2s, background 0.2s, transform 0.2s;
}

.algorithm-option:hover,
.algorithm-option:has(input:checked) {
  border-color: #96bda0;
  background: var(--checksum-soft-green);
}

.algorithm-option:has(input:checked) {
  transform: translateY(-1px);
}

.algorithm-option input {
  width: 16px;
  height: 16px;
  margin: 0;
  accent-color: var(--checksum-teal);
}

.progress-panel {
  margin-top: 20px;
  padding: 15px 16px;
  border: 1px solid #cce0d0;
  border-radius: 11px;
  background: #f4faf5;
}

.progress-panel[hidden] {
  display: none;
}

.progress-heading {
  display: flex;
  flex-wrap: wrap;
  gap: 7px 12px;
  align-items: center;
  margin-bottom: 10px;
  color: var(--checksum-ink);
  font-size: 12px;
}

.progress-percent {
  padding: 2px 7px;
  border-radius: 999px;
  color: var(--checksum-teal);
  background: #e1f0e4;
  font-size: 11px;
  font-weight: 700;
}

.progress-bar {
  display: block;
  width: 100%;
  height: 9px;
  overflow: hidden;
  border: 0;
  border-radius: 999px;
  background: #dbe9de;
}

.progress-bar::-webkit-progress-bar {
  border-radius: 999px;
  background: #dbe9de;
}

.progress-bar::-webkit-progress-value {
  border-radius: 999px;
  background: var(--checksum-teal);
}

.progress-bar::-moz-progress-bar {
  border-radius: 999px;
  background: var(--checksum-teal);
}

.progress-label {
  margin: 12px 0 4px;
  color: var(--checksum-muted);
  font-size: 11px;
  font-weight: 700;
}

.progress-detail {
  margin: 5px 0 0;
  color: var(--checksum-muted);
  font-size: 11px;
}

.cancel-button {
  margin-top: 10px;
  padding: 5px 10px;
  border: 1px solid #b5c8b9;
  border-radius: 999px;
  color: var(--checksum-teal);
  background: #fff;
  cursor: pointer;
  font-size: 11px;
  font-weight: 700;
}

.form-message {
  min-height: 1.5em;
  margin: 12px 0 0;
  color: var(--checksum-muted);
  font-size: 12px;
}

.form-message[data-state="error"] {
  color: var(--checksum-danger);
}

.hash-results {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-top: 17px;
}

.hash-results[hidden],
.check-result[hidden],
.compare-result[hidden] {
  display: none;
}

.hash-result-card {
  min-width: 0;
  padding: 13px;
  border: 1px solid var(--checksum-line);
  border-radius: 10px;
  background: #fbfdfb;
}

.hash-result-card h3 {
  margin-bottom: 7px;
  color: var(--checksum-ink);
  font-size: 13px;
}

.hash-result-card code,
.result-definition code,
.compare-file-card code {
  display: block;
  max-width: 100%;
  overflow-wrap: anywhere;
  color: #28564d;
  font: 600 11px/1.55 ui-monospace, SFMono-Regular, Consolas, monospace;
  word-break: break-word;
}

.hash-value-row {
  display: flex;
  align-items: flex-start;
  gap: 8px;
}

.hash-value {
  min-width: 0;
  flex: 1 1 auto;
}

.copy-button {
  flex: 0 0 auto;
  padding: 3px 7px;
  border: 1px solid #b5c8b9;
  border-radius: 6px;
  color: var(--checksum-teal);
  background: #fff;
  cursor: pointer;
  font-size: 10px;
  font-weight: 700;
}

.result-actions,
.check-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin-top: 15px;
}

.result-actions[hidden] {
  display: none;
}

.primary-button,
.secondary-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  padding: 8px 14px;
  border-radius: 999px;
  cursor: pointer;
  font-size: 12px;
  font-weight: 700;
  transition: color 0.2s, background 0.2s, border-color 0.2s, transform 0.2s;
}

.primary-button {
  border: 1px solid var(--checksum-teal);
  color: #fff;
  background: var(--checksum-teal);
}

.primary-button:hover,
.primary-button:focus-visible {
  border-color: var(--checksum-teal-dark);
  background: var(--checksum-teal-dark);
  transform: translateY(-1px);
}

.secondary-button {
  border: 1px solid var(--checksum-line);
  color: var(--checksum-teal);
  background: #fff;
}

.secondary-button:hover,
.secondary-button:focus-visible,
.file-change-button:hover,
.file-change-button:focus-visible {
  border-color: var(--checksum-teal);
  color: var(--checksum-teal-dark);
  background: var(--checksum-soft-green);
}

.primary-button:disabled,
.secondary-button:disabled,
.cancel-button:disabled,
.file-change-button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

.checksum-step + .checksum-step {
  margin-top: 24px;
  padding-top: 24px;
  border-top: 1px solid var(--checksum-line);
}

.step-heading {
  display: flex;
  align-items: center;
  gap: 9px;
  margin: 0 0 11px;
  color: var(--checksum-ink);
  font-size: 14px;
}

.step-number {
  display: inline-grid;
  place-items: center;
  width: 25px;
  height: 25px;
  border-radius: 50%;
  color: var(--checksum-ink);
  background: var(--checksum-lime);
  font: 700 10px/1 'DM Sans', sans-serif;
}

.field-label {
  display: block;
  margin: 13px 0 6px;
  color: var(--checksum-ink);
  font-size: 12px;
  font-weight: 700;
}

.checksum-input,
.algorithm-select {
  box-sizing: border-box;
  width: 100%;
  border: 1px solid #b9cbbd;
  border-radius: 9px;
  color: var(--checksum-ink);
  background: #fff;
  font: inherit;
}

.checksum-input {
  min-height: 100px;
  padding: 10px 11px;
  resize: vertical;
  font: 12px/1.55 ui-monospace, SFMono-Regular, Consolas, monospace;
}

.algorithm-select {
  min-height: 39px;
  padding: 7px 10px;
  font-size: 12px;
}

.checksum-input:focus,
.algorithm-select:focus,
.file-select-label:focus-within {
  outline: 3px solid rgba(13, 98, 91, 0.18);
  outline-offset: 2px;
}

.checksum-help,
.check-detected,
.result-difference,
.compare-result-note {
  margin: 6px 0 0;
  color: var(--checksum-muted);
  font-size: 11px;
}

.check-detected.is-valid {
  color: var(--checksum-teal);
  font-weight: 700;
}

.check-detected.is-invalid {
  color: var(--checksum-danger);
}

.check-result,
.compare-result {
  margin-top: 20px;
  padding: 17px;
  border: 1px solid var(--checksum-line);
  border-radius: 11px;
}

.check-result.is-match,
.compare-result.is-match {
  border-color: #b9d8bf;
  background: #f1f9f2;
}

.check-result.is-mismatch,
.compare-result.is-mismatch {
  border-color: #e2bcbc;
  background: #fff5f4;
}

.check-result h3,
.compare-result > h3 {
  margin-bottom: 12px;
  color: var(--checksum-ink);
  font-size: 17px;
}

.result-definition {
  display: grid;
  grid-template-columns: minmax(150px, 0.35fr) minmax(0, 1fr);
  gap: 7px 16px;
  margin: 0;
}

.result-definition dt {
  color: var(--checksum-muted);
  font-size: 11px;
  font-weight: 700;
}

.result-definition dd {
  min-width: 0;
  margin: 0;
}

.compare-files {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.compare-files > .checksum-step {
  min-width: 0;
  padding: 15px;
  border: 1px solid var(--checksum-line);
  border-radius: 12px;
  background: #fbfdfb;
}

.compare-files > .checksum-step + .checksum-step {
  margin-top: 0;
  padding-top: 15px;
  border-top: 1px solid var(--checksum-line);
}

.compare-files .file-drop-zone {
  min-height: 126px;
  padding: 17px;
}

.compare-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid var(--checksum-line);
}

.compare-lock-message {
  margin: 0;
  color: var(--checksum-muted);
  font-size: 11px;
  line-height: 1.5;
}

.compare-reset-button {
  flex: 0 0 auto;
}

.compare-files > .checksum-step:has(.file-drop-zone.is-locked) {
  border-color: #b9d8bf;
  background: #f4faf5;
}

.compare-files .file-drop-zone.is-locked {
  border-style: solid;
  border-color: #b9d8bf;
  color: var(--checksum-teal);
  background: #f4faf5;
  cursor: default;
}

.compare-files .file-drop-zone.is-locked::before {
  content: "✓";
  color: #fff;
  background: var(--checksum-teal);
}

.compare-files .file-drop-zone.is-locked .drop-or {
  display: none;
}

.compare-files .file-drop-zone.is-locked .file-select-label {
  border-color: #b9d8bf;
  color: var(--checksum-teal);
  background: #e5f2e7;
  pointer-events: none;
}

.compare-files .file-drop-zone.is-locked .file-select-label:hover,
.compare-files .file-drop-zone.is-locked .file-select-label:focus-within {
  border-color: #b9d8bf;
  color: var(--checksum-teal);
  background: #e5f2e7;
  transform: none;
}

.compare-result .compare-files {
  margin-top: 16px;
}

.compare-file-card {
  min-width: 0;
  padding: 13px;
  border: 1px solid var(--checksum-line);
  border-radius: 10px;
  background: #fff;
}

.compare-file-card h3 {
  margin-bottom: 10px;
  font-size: 13px;
}

.compare-file-card dl {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 6px 10px;
  margin: 0;
}

.compare-file-card dt {
  color: var(--checksum-muted);
  font-size: 11px;
  font-weight: 700;
}

.compare-file-card dd {
  min-width: 0;
  margin: 0;
  font-size: 11px;
}

.guide-section {
  padding: 50px 0 68px;
  background: #e6f0e9;
}

.guide-heading {
  margin-bottom: 24px;
}

.usage-heading {
  margin-bottom: 18px;
}

.usage-heading h2 {
  color: var(--checksum-ink);
  font-size: clamp(25px, 4vw, 34px);
}

.usage-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-bottom: 48px;
}

.usage-card {
  padding: 17px;
  border: 1px solid #b9d8bf;
  border-radius: 11px;
  background: #f7fbf7;
}

.usage-card-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 28px;
  min-height: 22px;
  padding: 2px 7px;
  border-radius: 999px;
  color: var(--checksum-teal-dark);
  background: var(--checksum-lime);
  font: 700 10px/1 ui-monospace, SFMono-Regular, Consolas, monospace;
  letter-spacing: 0.08em;
}

.usage-card h3 {
  margin: 11px 0 6px;
  color: var(--checksum-ink);
  font-size: 15px;
}

.guide-heading h2 {
  color: var(--checksum-ink);
  font-size: clamp(25px, 4vw, 34px);
}

.guide-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.guide-card {
  padding: 16px;
  border: 1px solid #cfdfd2;
  border-radius: 11px;
  background: rgba(255, 255, 255, 0.72);
}

.guide-card h3 {
  margin-bottom: 6px;
  color: var(--checksum-ink);
  font-size: 14px;
}

.usage-card p,
.guide-card p,
.privacy-copy p {
  margin-bottom: 0;
  color: var(--checksum-muted);
  font-size: 12px;
  line-height: 1.75;
}

.privacy-copy {
  margin-top: 24px;
  padding-top: 17px;
  border-top: 1px solid #c9dbcd;
}

.privacy-copy p + p {
  margin-top: 5px;
}

.file-checksum-page .site-footer {
  margin-top: 0;
}

@media (max-width: 760px) {
  .file-checksum-page .container {
    width: min(100% - 24px, 620px);
  }

  .checksum-hero {
    padding: 42px 0 28px;
  }

  .checksum-hero h1 {
    font-size: clamp(28px, 8vw, 40px);
  }

  .privacy-notice {
    border-radius: 12px;
    text-align: left;
  }

  .panel-heading {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .algorithm-options,
  .guide-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .compare-files {
    grid-template-columns: 1fr;
  }

  .usage-grid {
    grid-template-columns: 1fr;
  }

  .compare-toolbar {
    align-items: flex-start;
    flex-direction: column;
  }

  .compare-reset-button {
    align-self: flex-start;
  }

  .result-definition {
    grid-template-columns: 1fr;
    gap: 3px;
  }

  .result-definition dd {
    margin-bottom: 8px;
  }
}

@media (max-width: 480px) {
  .tool-tabs {
    gap: 3px;
    padding: 4px;
  }

  .tool-tab {
    min-height: 42px;
    padding: 7px 5px;
    font-size: 11px;
  }

  .tool-panel {
    padding: 19px 14px;
    border-radius: 14px;
  }

  .algorithm-box {
    padding: 13px;
  }

  .algorithm-box-heading {
    align-items: flex-start;
    flex-direction: column;
    gap: 7px;
  }

  .algorithm-options,
  .hash-results,
  .guide-grid {
    grid-template-columns: 1fr;
  }

  .file-info {
    grid-template-columns: minmax(0, 1fr) auto;
  }

  .file-info-label {
    grid-column: 1 / -1;
  }

  .file-info-name {
    font-size: 12px;
  }
}