:root {
  --bg: #eef4ff;
  --surface: #ffffff;
  --surface-soft: #f6f9ff;
  --surface-strong: #ebf2ff;
  --text: #10223e;
  --muted: #5c6f87;
  --line: #d4dfef;
  --line-strong: #bcd0e8;
  --primary: #1664e8;
  --primary-soft: #e8f1ff;
  --accent: #007b79;
  --accent-soft: #e7fbfa;
  --warn: #9c6000;
  --warn-soft: #fff5e0;
  --danger: #c94343;
  --danger-soft: #fff0f0;
  --ok: #18794e;
  --ok-soft: #eefaf3;
  --shadow: 0 2px 6px rgba(8, 25, 51, 0.06), 0 18px 38px rgba(8, 25, 51, 0.08);
  --app-shell-max: 1380px;
  --rail-divider-color: #dbe5f4;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  font-family: "Segoe UI", "Noto Sans", sans-serif;
  background:
    radial-gradient(circle at top left, rgba(22, 100, 232, 0.12), transparent 28%),
    radial-gradient(circle at top right, rgba(0, 123, 121, 0.12), transparent 24%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.72), rgba(255, 255, 255, 0.82)),
    var(--bg);
}

body.has-payload-modal {
  overflow: hidden;
}

a {
  color: #2151ad;
}

h2,
h3,
h4,
p,
pre {
  margin: 0;
}

code {
  padding: 0.12rem 0.36rem;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #f3f7fd;
  font-family: ui-monospace, "Cascadia Code", Consolas, monospace;
}

pre {
  white-space: pre-wrap;
  word-break: break-word;
  overflow-wrap: anywhere;
  line-height: 1.45;
  font-family: ui-monospace, "Cascadia Code", Consolas, monospace;
}

.layout {
  display: grid;
  gap: 1rem;
  margin: 1rem auto 2rem;
}

.panel,
.card,
.guide-card {
  border: 1px solid var(--line);
  border-radius: 22px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.panel,
.guide-card,
.card {
  padding: 1rem;
}

.intro-panel {
  display: grid;
  gap: 1.15rem;
}

.intro-panel .panel-head--split > .section-intro {
  flex-basis: 100%;
}

.capture-hint {
  display: grid;
  gap: 0.55rem;
  margin-top: 0.35rem;
  padding: 0.95rem 1rem;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--surface-soft);
  width: 100%;
}

.capture-hint__summary {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  cursor: pointer;
  list-style: none;
}

.capture-hint__summary::-webkit-details-marker {
  display: none;
}

.capture-hint__summary::after {
  content: "";
  width: 0.68rem;
  height: 0.68rem;
  margin-left: auto;
  border-right: 2px solid #476285;
  border-bottom: 2px solid #476285;
  transform: rotate(45deg);
  transition: transform 180ms ease;
}

.capture-hint[open] .capture-hint__summary::after {
  transform: rotate(225deg);
}

.capture-hint__summary h3,
.capture-hint h3 {
  font-size: 1rem;
  line-height: 1.3;
}

.capture-hint__content {
  display: grid;
  gap: 0.55rem;
}

.collapsible-panel {
  display: grid;
  gap: 0.65rem;
}

.collapsible-panel__summary {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  cursor: pointer;
  list-style: none;
}

.collapsible-panel__summary::-webkit-details-marker {
  display: none;
}

.collapsible-panel__summary::after {
  content: "";
  width: 0.68rem;
  height: 0.68rem;
  margin-left: auto;
  border-right: 2px solid #476285;
  border-bottom: 2px solid #476285;
  transform: rotate(45deg);
  transition: transform 180ms ease;
}

.collapsible-panel[open] .collapsible-panel__summary::after {
  transform: rotate(225deg);
}

.collapsible-panel__summary h4,
.collapsible-panel h4 {
  font-size: 1rem;
  line-height: 1.3;
}

.collapsible-panel__content {
  display: grid;
  gap: 0.55rem;
}

.capture-hint__steps {
  display: grid;
  gap: 0.5rem;
  padding-left: 1.15rem;
  margin: 0;
  color: var(--muted);
}

.capture-hint__steps li {
  display: grid;
  gap: 0.16rem;
  line-height: 1.55;
}

.capture-hint__steps strong {
  color: var(--text);
  font-size: 0.94rem;
}

.notes-panel {
  display: grid;
  gap: 1.1rem;
}

.notes-panel__grid {
  display: grid;
  gap: 0.9rem;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.notes-panel__item {
  display: grid;
  gap: 0.45rem;
  padding: 1rem 1.05rem;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--surface-soft);
}

.notes-panel__item h3 {
  font-size: 1.05rem;
  line-height: 1.3;
}

.notes-panel__item p {
  color: var(--muted);
  font-size: 0.97rem;
  line-height: 1.6;
}

.notes-panel__item p + p {
  margin-top: 0.65rem;
}

.notes-panel__item ul,
.notes-panel__item ol {
  margin: 0.75rem 0 0;
  padding-left: 1.1rem;
  color: var(--muted);
  line-height: 1.6;
}

.notes-panel__item details {
  margin-top: 0.6rem;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 0.72rem 0.8rem;
  background: rgba(255, 255, 255, 0.72);
}

.notes-panel__item summary {
  cursor: pointer;
  font-weight: 700;
  color: var(--ink);
}

.notes-panel__item details p {
  margin-top: 0.45rem;
}

.updated-at {
  color: var(--muted);
  font-size: 0.95rem;
}

.summary-grid {
  display: grid;
  gap: 0.85rem;
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.summary-grid--compact {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.summary-card {
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--surface-soft);
  padding: 0.95rem;
  display: grid;
  gap: 0.25rem;
  min-width: 0;
}

.summary-card__label {
  color: var(--muted);
  font-size: 0.84rem;
  font-weight: 700;
}

.summary-card strong {
  font-size: 1.35rem;
  line-height: 1.15;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.panel-head {
  display: flex;
  gap: 1rem;
}

.panel-head--split {
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
}

.panel-head--compact {
  margin-bottom: 0.9rem;
}

.panel-head--split > .section-intro {
  flex: 1 1 420px;
  min-width: 0;
}

.section-intro {
  display: grid;
  gap: 0.35rem;
}

.subtle,
.tool-footer__note,
.tool-footer__meta,
.analysis-notice span,
.analysis-hint {
  color: var(--muted);
  line-height: 1.55;
}

.badge-row,
.action-row,
.toggle-row,
.filter-chips,
.pagination,
.tool-footer__nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
}

.badge {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  padding: 0.42rem 0.8rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--surface-soft);
  color: #3d5879;
  font-size: 0.84rem;
  font-weight: 700;
}

.badge--ok {
  border-color: #cde7d8;
  background: var(--ok-soft);
  color: var(--ok);
}

.status-banner,
.analysis-notice,
.warning-banner {
  display: grid;
  gap: 0.28rem;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--surface-soft);
  padding: 0.95rem 1rem;
}

.status-banner.is-success {
  border-color: #cde7d8;
  background: var(--ok-soft);
}

.status-banner.is-warning {
  border-color: #ecd6a5;
  background: var(--warn-soft);
}

.status-banner.is-error,
.warning-banner {
  border-color: #f0c3c3;
  background: var(--danger-soft);
}

.dropzone {
  min-height: 168px;
  border: 1.5px dashed #c3d4eb;
  border-radius: 22px;
  background: #fbfdff;
  padding: 1.1rem;
  display: grid;
  place-items: center;
  text-align: center;
  gap: 0.42rem;
}

.dropzone.is-over {
  border-color: var(--primary);
  background: #edf4ff;
}

.field {
  display: grid;
  gap: 0.38rem;
  min-width: 0;
}

.field span {
  color: #223a5a;
  font-size: 0.92rem;
  font-weight: 700;
}

.field input,
.field select,
.field textarea {
  width: 100%;
  min-height: 44px;
  border: 1px solid #bccfe6;
  border-radius: 12px;
  padding: 0.72rem 0.84rem;
  color: var(--text);
  background: #ffffff;
  font: inherit;
}

.field textarea {
  min-height: 220px;
  resize: vertical;
}

.paste-area {
  font-family: ui-monospace, "Cascadia Code", Consolas, monospace;
}

.field input:focus-visible,
.field select:focus-visible,
.field textarea:focus-visible,
.btn:focus-visible,
.chip-button:focus-visible,
.tab-button:focus-visible,
.sort-link:focus-visible,
.row-link:focus-visible,
.link-button:focus-visible,
.waterfall-row:focus-visible {
  outline: 2px solid #cfe0ff;
  outline-offset: 2px;
}

.field-grid {
  display: grid;
  gap: 0.8rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.field--inline {
  display: inline-grid;
  align-items: center;
}

.toggle-list {
  display: grid;
  gap: 0.45rem;
}

.checkbox-row {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  min-height: 40px;
  color: #264160;
  font-size: 0.92rem;
  font-weight: 600;
}

.checkbox-row input {
  width: 18px;
  height: 18px;
  margin: 0;
}

.btn,
.chip-button,
.tab-button,
.sort-link,
.row-link,
.link-button,
.waterfall-row {
  font: inherit;
}

.btn {
  min-height: 44px;
  border: 1px solid var(--line-strong);
  border-radius: 12px;
  padding: 0.72rem 0.94rem;
  background: #ffffff;
  color: #173758;
  font-weight: 700;
  cursor: pointer;
}

.btn:hover:not(:disabled),
.chip-button:hover:not(:disabled),
.tab-button:hover:not(:disabled),
.sort-link:hover:not(:disabled),
.row-link:hover:not(:disabled),
.link-button:hover:not(:disabled),
.waterfall-row:hover:not(:disabled) {
  background: var(--surface-soft);
}

.btn:disabled,
.chip-button:disabled,
.tab-button:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.btn-primary {
  border-color: var(--primary);
  background: linear-gradient(180deg, #4b89ff, var(--primary));
  color: #ffffff;
  box-shadow: 0 12px 24px rgba(22, 100, 232, 0.2);
}

.btn-primary:hover:not(:disabled),
.btn-primary:focus-visible:not(:disabled),
.btn-primary:active:not(:disabled) {
  background: linear-gradient(180deg, #4b89ff, var(--primary));
  color: #ffffff;
}

.btn-small {
  min-height: 38px;
  padding: 0.58rem 0.8rem;
  font-size: 0.9rem;
}

.chip-button,
.tab-button {
  min-height: 38px;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.48rem 0.78rem;
  background: var(--surface-soft);
  color: #335277;
  font-weight: 700;
  cursor: pointer;
}

.chip-button.is-active,
.tab-button.is-active {
  border-color: #c3d8ff;
  background: var(--primary-soft);
  color: #1d4ca6;
}

.action-row--top {
  align-items: center;
  row-gap: 0.85rem;
}

.intro-panel .field {
  gap: 0.5rem;
}

.workspace-panel,
.main-panel {
  display: grid;
  gap: 1rem;
}

.main-panel {
  min-width: 0;
}

.workspace-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: minmax(300px, 380px) minmax(0, 1fr);
  align-items: start;
}

.sidebar-panel {
  position: sticky;
  top: 12px;
  display: grid;
  gap: 1rem;
}

.card--inset {
  border-radius: 18px;
  background: var(--surface-soft);
  box-shadow: none;
}

.empty-state,
.empty-card {
  border: 1px dashed #c6d5ea;
  border-radius: 22px;
  background: #fbfdff;
  text-align: center;
  display: grid;
  gap: 0.45rem;
  padding: 1.2rem;
}

.error-state {
  border-color: #edc8c8;
  background: #fff7f7;
}

.tab-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.tab-surface,
.detail-surface,
.overview-grid,
.detail-grid,
.journey-grid,
.redirect-grid,
.waterfall-list {
  display: grid;
  gap: 1rem;
}

.detail-surface {
  min-height: 0;
  max-height: var(--detail-surface-max-height, none);
  overflow-y: auto;
  overscroll-behavior: contain;
  scrollbar-gutter: stable;
}

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

.card--wide {
  grid-column: 1 / -1;
}

.issue-list,
.journey-list,
.redirect-steps,
.timing-list {
  display: grid;
  gap: 0.6rem;
  padding-left: 1rem;
  margin: 0;
}

.issue-list li,
.journey-list li,
.redirect-steps li,
.timing-list li {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem 0.85rem;
  align-items: center;
}

.issue-list li {
  align-items: flex-start;
}

.meta-list {
  display: grid;
  gap: 0.6rem;
}

.meta-list div {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  min-width: 0;
}

.meta-list dt {
  color: var(--muted);
}

.meta-list dd,
.meta-list dt {
  overflow-wrap: anywhere;
  word-break: break-word;
}

.double-list {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.table-toolbar {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: center;
  flex-wrap: wrap;
  margin-bottom: 0.8rem;
}

.table-wrap {
  overflow: auto;
  max-height: 680px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: #ffffff;
}

.table-wrap--nested {
  max-height: 320px;
}

.table-wrap--nested table {
  min-width: 0;
}

table {
  width: 100%;
  min-width: 920px;
  border-collapse: collapse;
}

th,
td {
  border-bottom: 1px solid #e7edf7;
  padding: 0.76rem 0.8rem;
  text-align: left;
  vertical-align: top;
  overflow-wrap: anywhere;
  word-break: break-word;
}

thead th {
  position: sticky;
  top: 0;
  z-index: 1;
  background: #f8fbff;
}

.sort-link,
.row-link,
.link-button {
  border: 0;
  padding: 0;
  background: transparent;
  color: inherit;
  text-align: left;
  cursor: pointer;
}

.issue-list .link-button,
.journey-list .link-button,
.redirect-steps .link-button {
  flex: 1 1 260px;
  min-width: 0;
  line-height: 1.45;
  font-size: 0.96rem;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.issue-list .subtle {
  flex: 0 0 auto;
  font-size: 0.92rem;
}

.sort-link {
  font-weight: 800;
}

.path-cell {
  display: inline-flex;
  max-width: 320px;
  word-break: break-word;
}

tbody tr.is-selected,
.waterfall-row.is-selected {
  background: #f3f8ff;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 0.2rem 0.48rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--surface-soft);
  font-size: 0.78rem;
  font-weight: 800;
}

.status-pill--ok {
  border-color: #cfe7db;
  background: var(--ok-soft);
  color: var(--ok);
}

.status-pill--warning {
  border-color: #edd8a9;
  background: var(--warn-soft);
  color: var(--warn);
}

.status-pill--danger {
  border-color: #f0c7c7;
  background: var(--danger-soft);
  color: var(--danger);
}

.flag-pill {
  display: inline-flex;
  align-items: center;
  min-height: 26px;
  padding: 0.16rem 0.46rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--surface-soft);
  color: #3d5978;
  font-size: 0.75rem;
  font-weight: 800;
  margin: 0 0.2rem 0.2rem 0;
}

.flag-pill--danger {
  border-color: #f0c7c7;
  background: var(--danger-soft);
  color: var(--danger);
}

.flag-pill--warning {
  border-color: #edd8a9;
  background: var(--warn-soft);
  color: var(--warn);
}

.flag-pill--accent {
  border-color: #bce4e2;
  background: var(--accent-soft);
  color: var(--accent);
}

.waterfall-row {
  display: grid;
  gap: 0.8rem;
  grid-template-columns: minmax(260px, 2fr) minmax(0, 4fr) minmax(120px, 1fr);
  align-items: center;
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--surface);
  padding: 0.85rem;
  cursor: pointer;
}

.waterfall-meta {
  display: grid;
  gap: 0.18rem;
  text-align: left;
}

.waterfall-track {
  display: flex;
  min-width: 0;
  align-items: center;
}

.waterfall-offset {
  display: inline-block;
  min-height: 20px;
}

.waterfall-bar {
  display: inline-flex;
  min-height: 20px;
  overflow: hidden;
  border-radius: 999px;
  background: #dce8fb;
}

.segment {
  min-height: 20px;
}

.segment--blocked { background: #9ca7b8; }
.segment--dns { background: #7a9df4; }
.segment--connect { background: #3d7cea; }
.segment--ssl { background: #0c9c96; }
.segment--send { background: #f0b24a; }
.segment--wait { background: #ef7d53; }
.segment--receive { background: #17a673; }

.waterfall-badges {
  text-align: right;
}

.journey-grid,
.redirect-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.journey-card,
.redirect-card {
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 0.95rem;
  background: var(--surface-soft);
  display: grid;
  gap: 0.7rem;
}

.detail-card {
  display: grid;
  gap: 1rem;
}

.detail-head {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: flex-start;
  flex-wrap: wrap;
}

.detail-head > div:first-child,
.detail-actions,
.detail-grid > .card,
.summary-grid--compact .summary-card {
  min-width: 0;
}

.detail-head h2 {
  margin-top: 0.18rem;
  font-size: clamp(1.35rem, 2.4vw, 2rem);
  line-height: 1.18;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.detail-actions {
  display: grid;
  gap: 0.7rem;
  justify-items: end;
}

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

.payload-block {
  display: grid;
  gap: 0.4rem;
}

.payload-block__head,
.payload-modal__header {
  display: flex;
  justify-content: space-between;
  gap: 0.8rem;
  align-items: flex-start;
  flex-wrap: wrap;
}

.payload-preview-frame {
  height: 220px;
  max-height: 220px;
  overflow: auto;
  padding: 0.85rem;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: #f8fbff;
  font-size: 0.8rem;
}

.detail-card pre:not(.payload-preview-frame) {
  font-size: 0.86rem;
}

.summary-grid--compact .summary-card strong {
  font-size: clamp(1.02rem, 1.8vw, 1.24rem);
}

.summary-grid--compact .summary-card__label,
.payload-modal__header .subtle {
  overflow-wrap: anywhere;
  word-break: break-word;
}

.payload-modal {
  position: fixed;
  inset: 0;
  z-index: 40;
  display: grid;
  place-items: center;
  padding: 1.25rem;
  background: rgba(8, 25, 51, 0.46);
  backdrop-filter: blur(6px);
}

.payload-modal[hidden] {
  display: none;
}

.payload-modal__card {
  width: min(960px, 100%);
  max-height: min(84vh, 820px);
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: var(--surface);
  box-shadow: 0 24px 64px rgba(8, 25, 51, 0.22);
  display: grid;
  gap: 0.9rem;
  min-width: 0;
}

.payload-modal__body {
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: #f8fbff;
  padding: 1rem;
  min-width: 0;
}

.payload-modal__body pre {
  font-size: 0.84rem;
}

.timing-list span {
  min-width: 84px;
}

.tool-footer {
  margin-top: 2rem;
  padding-bottom: 1rem;
}

.tool-footer__nav {
  margin-bottom: 0.85rem;
}

.tool-footer__nav a {
  color: inherit;
  text-decoration: none;
}

.tool-footer__nav a:hover,
.tool-footer__nav a:focus-visible {
  text-decoration: underline;
}

@media (max-width: 1220px) {
  .workspace-grid,
  .overview-grid,
  .journey-grid,
  .redirect-grid,
  .detail-grid,
  .notes-panel__grid,
  .double-list {
    grid-template-columns: 1fr;
  }

  .sidebar-panel {
    position: static;
  }

  .detail-surface {
    max-height: none;
    overflow: visible;
    scrollbar-gutter: auto;
  }
}

@media (max-width: 920px) {
  .field-grid {
    grid-template-columns: 1fr;
  }

  .detail-head,
  .table-toolbar,
  .panel-head--split {
    flex-direction: column;
    align-items: flex-start;
  }

  .action-row {
    width: 100%;
  }

  .action-row .btn {
    flex: 1 1 180px;
  }

  .payload-preview-frame {
    height: 180px;
    max-height: 180px;
  }

  .waterfall-row {
    grid-template-columns: 1fr;
  }

  .waterfall-badges {
    text-align: left;
  }

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

@media (max-width: 680px) {
  .summary-grid {
    grid-template-columns: 1fr;
  }

  .panel,
  .card,
  .guide-card {
    padding: 0.92rem;
  }

  .payload-modal {
    padding: 0.8rem;
  }

  table {
    min-width: 760px;
  }
}