/* Tools hub + interactive helpers */

.tools-intro,
.tools-lead {
  color: color-mix(in srgb, var(--fg) 72%, transparent);
  line-height: 1.65;
  font-size: 14.5px;
  margin: 0 0 1.25rem;
}

.tools-grid {
  list-style: none;
  margin: 1.5rem 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.tools-card a {
  display: block;
  padding: 16px 18px;
  border-radius: 10px;
  border: 1px solid color-mix(in srgb, var(--links) 22%, transparent);
  background: color-mix(in srgb, var(--card-bg) 88%, transparent);
  text-decoration: none;
  transition: border-color 0.2s, box-shadow 0.2s, transform 0.15s;
}

.tools-card a:hover {
  border-color: var(--links);
  box-shadow: 0 4px 20px color-mix(in srgb, var(--links) 12%, transparent);
  transform: translateY(-1px);
}

.tools-card-icon {
  display: block;
  font-size: 1.35rem;
  margin-bottom: 6px;
}

.tools-card-title {
  display: block;
  font-weight: 700;
  color: var(--heading-color, var(--fg));
  margin-bottom: 4px;
}

.tools-card-desc {
  display: block;
  font-size: 13px;
  line-height: 1.55;
  color: color-mix(in srgb, var(--fg) 62%, transparent);
}

.tool-panel {
  margin: 1.25rem 0 2rem;
  padding: 18px 20px;
  border-radius: 12px;
  border: 1px solid var(--table-border-color);
  background: color-mix(in srgb, var(--card-bg) 90%, transparent);
}

.tool-panel-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}

.tool-label {
  display: block;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: color-mix(in srgb, var(--fg) 55%, transparent);
  margin-bottom: 6px;
}

.tool-segment {
  display: inline-flex;
  border: 1px solid var(--table-border-color);
  border-radius: 999px;
  overflow: hidden;
}

.tool-segment-btn {
  border: 0;
  background: transparent;
  color: color-mix(in srgb, var(--fg) 70%, transparent);
  font-family: var(--mono-font);
  font-size: 12px;
  padding: 7px 14px;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}

.tool-segment-btn.is-active {
  background: color-mix(in srgb, var(--links) 18%, transparent);
  color: var(--links);
  font-weight: 600;
}

.tool-field {
  display: block;
  margin-bottom: 14px;
}

.tool-textarea {
  width: 100%;
  min-height: 96px;
  resize: vertical;
  padding: 12px 14px;
  border-radius: 8px;
  border: 1px solid var(--table-border-color);
  background: color-mix(in srgb, var(--bg) 65%, transparent);
  color: var(--fg);
  font-family: var(--mono-font);
  font-size: 13px;
  line-height: 1.55;
}

.tool-textarea:focus {
  outline: 2px solid color-mix(in srgb, var(--links) 45%, transparent);
  outline-offset: 1px;
}

.tool-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.tool-btn {
  border: 1px solid color-mix(in srgb, var(--links) 40%, transparent);
  background: color-mix(in srgb, var(--links) 14%, transparent);
  color: var(--links);
  font-family: var(--mono-font);
  font-size: 12px;
  font-weight: 600;
  padding: 8px 14px;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
}

.tool-btn:hover {
  background: color-mix(in srgb, var(--links) 22%, transparent);
  border-color: var(--links);
}

.tool-btn-ghost {
  background: transparent;
  color: color-mix(in srgb, var(--fg) 72%, transparent);
  border-color: var(--table-border-color);
}

.tool-btn-ghost:hover {
  color: var(--links);
  border-color: color-mix(in srgb, var(--links) 35%, transparent);
}

.tool-output {
  border-top: 1px solid var(--table-border-color);
  padding-top: 16px;
}

.tool-output-title {
  font-size: 1rem;
  margin: 0 0 12px;
  color: var(--heading-color, var(--fg));
}

.tool-summary {
  margin: 0 0 14px;
  font-family: var(--mono-font);
  font-size: 13px;
  color: var(--terminal-color);
  line-height: 1.6;
}

.tool-badge {
  display: inline-block;
  vertical-align: middle;
  font-family: var(--body-font);
  font-size: 11px;
  font-weight: 600;
  padding: 2px 9px;
  border-radius: 999px;
  margin-left: 4px;
  border: 1px solid transparent;
}

.tool-badge--request {
  color: color-mix(in srgb, var(--links) 90%, var(--fg));
  border-color: color-mix(in srgb, var(--links) 35%, transparent);
  background: color-mix(in srgb, var(--links) 12%, transparent);
}

.tool-badge--response {
  color: color-mix(in srgb, var(--terminal-color) 90%, var(--fg));
  border-color: color-mix(in srgb, var(--terminal-color) 35%, transparent);
  background: color-mix(in srgb, var(--terminal-color) 10%, transparent);
}

.tool-badge--exception {
  color: color-mix(in srgb, var(--red) 90%, var(--fg));
  border-color: color-mix(in srgb, var(--red) 40%, transparent);
  background: color-mix(in srgb, var(--red) 10%, transparent);
}

.tool-result-intro {
  margin: 0 0 10px;
  font-size: 12.5px;
  line-height: 1.55;
  color: color-mix(in srgb, var(--fg) 58%, transparent);
}

.tool-dl-value {
  display: block;
}

.tool-dl-hint {
  display: block;
  margin-top: 5px;
  font-family: var(--body-font);
  font-size: 12px;
  line-height: 1.5;
  color: color-mix(in srgb, var(--fg) 52%, transparent);
  font-weight: 400;
}

.tool-result-block {
  margin-bottom: 16px;
}

.tool-result-block h3 {
  font-size: 0.92rem;
  margin: 0 0 8px;
  color: var(--heading-color, var(--fg));
}

.tool-dl {
  margin: 0;
  display: grid;
  grid-template-columns: minmax(120px, 34%) 1fr;
  gap: 6px 12px;
  font-size: 13px;
}

.tool-dl dt {
  margin: 0;
  color: color-mix(in srgb, var(--fg) 55%, transparent);
  font-weight: 600;
}

.tool-dl dd {
  margin: 0;
  font-family: var(--mono-font);
  color: color-mix(in srgb, var(--fg) 82%, transparent);
  word-break: break-word;
}

.tool-dl dd.tool-bad {
  color: var(--red);
}

.tool-error {
  margin: 0;
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px solid color-mix(in srgb, var(--red) 45%, transparent);
  background: color-mix(in srgb, var(--red) 8%, transparent);
  color: color-mix(in srgb, var(--red) 85%, var(--fg));
  font-size: 13px;
}

.tools-help {
  margin-top: 2rem;
}

/* Modbus ADU frame diagram */
.modbus-frame-diagram {
  margin-top: 1.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--table-border-color);
}

.modbus-frame-adu {
  border: 2px solid color-mix(in srgb, var(--red) 50%, transparent);
  border-radius: 6px;
  padding: 28px 12px 12px;
  position: relative;
  margin-bottom: 14px;
  overflow-x: auto;
}

.modbus-frame-adu-inner {
  display: flex;
  flex-wrap: nowrap;
  align-items: stretch;
  gap: 6px;
  min-width: min(100%, 520px);
}

.modbus-frame-adu-inner--rtu {
  align-items: flex-end;
}

.modbus-frame-adu-caption {
  margin: 10px 0 0;
  text-align: center;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: color-mix(in srgb, var(--red) 75%, var(--fg));
}

.modbus-frame-group {
  position: relative;
  border: 2px solid color-mix(in srgb, var(--red) 45%, transparent);
  border-radius: 4px;
  padding: 22px 6px 8px;
  flex: 0 1 auto;
}

.modbus-frame-group--mbap {
  flex: 0 0 auto;
}

.modbus-frame-group--pdu {
  flex: 1 1 auto;
  min-width: 120px;
}

.modbus-frame-group-label {
  position: absolute;
  top: -10px;
  left: 10px;
  padding: 0 6px;
  background: color-mix(in srgb, var(--card-bg) 92%, var(--bg));
  font-size: 11px;
  font-weight: 700;
  color: color-mix(in srgb, var(--red) 80%, var(--fg));
}

.modbus-frame-blocks {
  display: flex;
  flex-wrap: nowrap;
  gap: 4px;
  align-items: stretch;
}

.modbus-frame-block {
  min-width: 56px;
  padding: 8px 6px;
  border-radius: 3px;
  border: 1px solid color-mix(in srgb, var(--fg) 18%, transparent);
  display: flex;
  flex-direction: column;
  gap: 4px;
  text-align: center;
}

.modbus-frame-block-name {
  font-size: 9px;
  line-height: 1.25;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  color: color-mix(in srgb, var(--fg) 70%, transparent);
}

.modbus-frame-block-size {
  font-size: 9px;
  color: color-mix(in srgb, var(--fg) 50%, transparent);
}

.modbus-frame-block-hex {
  font-family: var(--mono-font);
  font-size: 11px;
  line-height: 1.35;
  word-break: break-all;
  color: var(--fg);
}

.modbus-frame-block--mbap {
  background: color-mix(in srgb, #6b9bd1 22%, var(--card-bg));
  border-color: color-mix(in srgb, #6b9bd1 40%, transparent);
}

.modbus-frame-block--addr {
  background: color-mix(in srgb, #4a7fc1 28%, var(--card-bg));
  border-color: color-mix(in srgb, #4a7fc1 45%, transparent);
}

.modbus-frame-block--fc {
  background: color-mix(in srgb, var(--red) 22%, var(--card-bg));
  border-color: color-mix(in srgb, var(--red) 45%, transparent);
}

.modbus-frame-block--data {
  background: color-mix(in srgb, var(--terminal-color) 18%, var(--card-bg));
  border-color: color-mix(in srgb, var(--terminal-color) 35%, transparent);
}

.modbus-frame-block--crc {
  background: color-mix(in srgb, #e8a030 20%, var(--card-bg));
  border-color: color-mix(in srgb, #e8a030 40%, transparent);
}

.modbus-frame-block.is-bad {
  border-color: var(--red);
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--red) 35%, transparent);
}

.modbus-frame-legend {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 4px 12px;
  margin: 0;
  max-width: 420px;
  font-size: 12px;
}

.modbus-frame-legend dt {
  margin: 0;
  font-weight: 700;
  font-family: var(--mono-font);
  color: color-mix(in srgb, var(--fg) 65%, transparent);
}

.modbus-frame-legend dd {
  margin: 0;
  color: color-mix(in srgb, var(--fg) 55%, transparent);
  line-height: 1.45;
}

@media (max-width: 640px) {
  .modbus-frame-adu-inner {
    flex-direction: column;
    min-width: 0;
  }
  .modbus-frame-group--mbap,
  .modbus-frame-group--pdu {
    width: 100%;
  }
  .modbus-frame-blocks {
    flex-wrap: wrap;
  }
  .modbus-frame-block {
    flex: 1 1 72px;
  }
}

@media (max-width: 640px) {
  .tool-dl {
    grid-template-columns: 1fr;
  }
  .tool-dl dt {
    margin-top: 4px;
  }
}

/* Wireshark filter builder */
.wireshark-tool .ws-mode-row {
  margin-bottom: 16px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--table-border-color);
}

.wireshark-tool .ws-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(260px, 0.9fr);
  gap: 20px;
  align-items: start;
}

.ws-builder-head {
  margin-bottom: 10px;
}

.ws-conditions {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.ws-condition-card {
  padding: 14px 16px;
  border-radius: 10px;
  border: 1px solid color-mix(in srgb, var(--links) 18%, var(--table-border-color));
  background: color-mix(in srgb, var(--bg) 50%, transparent);
}

.ws-join-row {
  margin: -4px 0 10px;
  font-size: 12px;
  font-family: var(--mono-font);
  color: color-mix(in srgb, var(--terminal-color) 85%, var(--fg));
}

.ws-join-select {
  margin-left: 6px;
  min-width: 72px;
}

.ws-condition-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}

.ws-condition-num {
  font-family: var(--mono-font);
  font-size: 11px;
  font-weight: 700;
  color: color-mix(in srgb, var(--fg) 45%, transparent);
}

.ws-remove-btn {
  border: 0;
  background: transparent;
  color: color-mix(in srgb, var(--red) 75%, var(--fg));
  font-size: 1.25rem;
  line-height: 1;
  cursor: pointer;
  padding: 2px 8px;
  border-radius: 6px;
}

.ws-remove-btn:hover:not(:disabled) {
  background: color-mix(in srgb, var(--red) 12%, transparent);
}

.ws-remove-btn:disabled {
  opacity: 0.25;
  cursor: not-allowed;
}

.ws-condition-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px 12px;
}

.ws-field {
  display: block;
  min-width: 0;
}

.ws-field--wide {
  grid-column: 1 / -1;
}

.ws-select,
.ws-input {
  width: 100%;
  margin-top: 4px;
  padding: 8px 10px;
  border-radius: 8px;
  border: 1px solid var(--table-border-color);
  background: color-mix(in srgb, var(--bg) 65%, transparent);
  color: var(--fg);
  font-family: var(--mono-font);
  font-size: 12.5px;
}

.ws-select:focus,
.ws-input:focus {
  outline: 2px solid color-mix(in srgb, var(--links) 45%, transparent);
  outline-offset: 1px;
}

.ws-negate {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: color-mix(in srgb, var(--fg) 72%, transparent);
  cursor: pointer;
  margin: 2px 0 0;
}

.ws-flag-note {
  grid-column: 1 / -1;
  margin: 0;
  font-size: 12px;
  color: color-mix(in srgb, var(--terminal-color) 80%, var(--fg));
  font-family: var(--mono-font);
}

.ws-builder-actions {
  margin-top: 12px;
  margin-bottom: 0;
}

.ws-output-col {
  position: sticky;
  top: 12px;
  padding: 16px;
  border-radius: 10px;
  border: 1px solid color-mix(in srgb, var(--terminal-color) 25%, var(--table-border-color));
  background: color-mix(in srgb, var(--card-bg) 85%, transparent);
}

.ws-filter-box {
  margin: 8px 0 12px;
  padding: 12px 14px;
  border-radius: 8px;
  border: 1px solid color-mix(in srgb, var(--terminal-color) 30%, var(--table-border-color));
  background: color-mix(in srgb, var(--bg) 70%, #000);
  color: var(--terminal-color);
  font-family: var(--mono-font);
  font-size: 12.5px;
  line-height: 1.6;
  white-space: pre-wrap;
  word-break: break-word;
  overflow-x: auto;
}

.ws-filter-box--muted {
  color: color-mix(in srgb, var(--fg) 70%, var(--terminal-color));
  font-size: 11.5px;
}

.ws-filter-box--empty {
  color: color-mix(in srgb, var(--fg) 45%, transparent);
  font-style: italic;
}

.ws-tshark-block {
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid var(--table-border-color);
}

.ws-validation {
  margin: 0 0 10px;
  font-size: 12px;
  line-height: 1.5;
}

.ws-validation--ok {
  color: color-mix(in srgb, var(--terminal-color) 85%, var(--fg));
}

.ws-validation--warn {
  color: color-mix(in srgb, var(--red) 80%, var(--fg));
}

.ws-preview-meta {
  margin-top: 10px;
  font-size: 12px;
  color: color-mix(in srgb, var(--fg) 55%, transparent);
  line-height: 1.5;
}

.ws-presets {
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--table-border-color);
}

.ws-preset-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 8px;
}

.ws-preset-chip {
  border: 1px solid color-mix(in srgb, var(--links) 28%, var(--table-border-color));
  background: color-mix(in srgb, var(--links) 8%, transparent);
  color: color-mix(in srgb, var(--links) 90%, var(--fg));
  font-family: var(--mono-font);
  font-size: 11.5px;
  padding: 6px 12px;
  border-radius: 999px;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
}

.ws-preset-chip:hover {
  background: color-mix(in srgb, var(--links) 16%, transparent);
  border-color: var(--links);
}

.ws-share-block {
  margin: 12px 0 0;
}

.ws-share-input {
  width: 100%;
  margin-top: 6px;
  font-size: 11px;
  color: color-mix(in srgb, var(--fg) 65%, transparent);
}

.ws-presets--custom {
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px dashed color-mix(in srgb, var(--links) 20%, var(--table-border-color));
}

.ws-custom-hint {
  margin: 4px 0 10px;
  font-size: 12px;
  color: color-mix(in srgb, var(--fg) 50%, transparent);
}

.ws-save-custom {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  margin-bottom: 10px;
}

.ws-save-custom .ws-input {
  flex: 1 1 180px;
  margin-top: 0;
}

.ws-custom-empty {
  margin: 6px 0 0;
  font-size: 12px;
  color: color-mix(in srgb, var(--fg) 48%, transparent);
}

.ws-custom-chip-wrap {
  display: inline-flex;
  align-items: center;
  gap: 2px;
}

.ws-preset-chip--custom {
  border-radius: 999px 0 0 999px;
  padding-right: 8px;
}

.ws-custom-del {
  border: 1px solid color-mix(in srgb, var(--red) 35%, var(--table-border-color));
  border-left: 0;
  background: color-mix(in srgb, var(--red) 6%, transparent);
  color: color-mix(in srgb, var(--red) 80%, var(--fg));
  font-size: 14px;
  line-height: 1;
  padding: 6px 10px;
  border-radius: 0 999px 999px 0;
  cursor: pointer;
}

.ws-custom-del:hover {
  background: color-mix(in srgb, var(--red) 14%, transparent);
}

@media (max-width: 900px) {
  .wireshark-tool .ws-layout {
    grid-template-columns: 1fr;
  }
  .ws-output-col {
    position: static;
  }
}

@media (max-width: 520px) {
  .ws-condition-grid {
    grid-template-columns: 1fr;
  }
}

/* Shared utilities */
.is-hidden,
.tool-field.is-hidden {
  display: none !important;
}

.tool-hint {
  display: block;
  margin-top: 0.35rem;
  font-size: 12px;
  opacity: 0.72;
  line-height: 1.4;
}
.subnet-tool .subnet-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 1.25rem;
}

.subnet-tab-panel {
  display: none;
}

.subnet-tab-panel.is-active {
  display: block;
}

.subnet-tool .subnet-layout {
  display: grid;
  grid-template-columns: minmax(0, 280px) minmax(0, 1fr);
  gap: 1.5rem;
  align-items: start;
}

.subnet-slider {
  width: 100%;
  accent-color: var(--accent, var(--green));
}

.subnet-prefix-row {
  display: flex;
  align-items: center;
  gap: 6px;
  max-width: 120px;
}

.subnet-prefix-slash {
  font-family: var(--font-mono, 'JetBrains Mono', monospace);
  font-size: 18px;
  font-weight: 600;
  opacity: 0.85;
}

.subnet-prefix-input {
  width: 100%;
  max-width: 88px;
}

.subnet-output-col {
  min-width: 0;
}

.subnet-dl {
  margin: 0 0 1rem;
}

.subnet-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 0 0 0.75rem;
}

.subnet-badge {
  font-size: 12px;
  padding: 3px 8px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--accent, var(--green)) 16%, transparent);
  color: var(--fg);
}

.subnet-binary code {
  display: block;
  font-family: var(--font-mono, 'JetBrains Mono', monospace);
  font-size: 12px;
  line-height: 1.8;
  word-break: break-all;
  margin: 0.35rem 0 0.75rem;
}

.subnet-bit-net {
  color: var(--accent, var(--green));
  font-weight: 600;
}

.subnet-bit-host {
  opacity: 0.72;
}

.subnet-bit-dot {
  opacity: 0.5;
  padding: 0 1px;
}

.subnet-export {
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 0.5rem;
}

.subnet-table-wrap {
  overflow-x: auto;
  margin: 1rem 0;
}

.subnet-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.subnet-table th,
.subnet-table td {
  text-align: left;
  padding: 8px 10px;
  border-bottom: 1px solid color-mix(in srgb, var(--fg) 12%, transparent);
}

.subnet-table th {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  opacity: 0.75;
}

.subnet-meta {
  font-size: 14px;
  opacity: 0.85;
  margin: 0.5rem 0 0;
}

.subnet-check-list {
  list-style: none;
  margin: 0.75rem 0 0;
  padding: 0;
}

.subnet-check-list li {
  padding: 6px 0;
  font-family: var(--font-mono, 'JetBrains Mono', monospace);
  font-size: 14px;
}

.subnet-check--ok {
  color: var(--accent, var(--green));
}

.subnet-check--bad {
  color: color-mix(in srgb, var(--red) 85%, var(--fg));
}

.subnet-presets {
  margin-top: 1.5rem;
}

@media (max-width: 900px) {
  .subnet-tool .subnet-layout {
    grid-template-columns: 1fr;
  }
}

.subnet-glossary-dl {
  margin: 0 0 1.5rem;
  font-size: 14px;
  line-height: 1.55;
}

.subnet-glossary-dl dt {
  font-weight: 600;
  margin-top: 0.75rem;
}

.subnet-glossary-dl dt:first-child {
  margin-top: 0;
}

.subnet-glossary-dl dd {
  margin: 0.2rem 0 0;
  opacity: 0.88;
}

.iec104-asdu-opts {
  gap: 16px;
}

.tool-field--inline {
  margin-bottom: 0;
  min-width: 88px;
}

.tool-field--inline .ws-input {
  width: 100%;
  min-width: 72px;
}

.iec104-tool .ws-presets {
  margin-bottom: 1rem;
}

.iec104-log-wrap,
.tool-log-wrap {
  overflow-x: auto;
  margin-bottom: 1rem;
}

.iec104-log-table tbody tr,
.tool-log-table tbody tr {
  cursor: pointer;
}

.iec104-log-row.is-active,
.tool-log-row.is-active {
  background: color-mix(in srgb, var(--links) 10%, transparent);
}

.iec104-log-detail,
.tool-log-detail {
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--table-border-color);
}