:root {
  --bg: #f5f6f1;
  --surface: #ffffff;
  --surface-soft: #eef3f1;
  --surface-warm: #f7efe4;
  --ink: #182025;
  --muted: #68737a;
  --line: #dfe5e2;
  --accent: #1f9d8a;
  --accent-dark: #137464;
  --amber: #b7791f;
  --blue: #2f6f9f;
  --danger: #b9403a;
  --shadow: 0 18px 44px rgba(24, 32, 37, 0.08);
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--bg);
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input,
textarea,
select {
  font: inherit;
}

button {
  -webkit-tap-highlight-color: transparent;
}

textarea {
  min-height: 120px;
  resize: vertical;
}

pre,
code,
textarea {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}

.site-shell {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(245, 246, 241, 0.92);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
}

.site-header__inner,
.site-footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 16px 0;
}

.wordmark {
  font-weight: 800;
  letter-spacing: 0;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 8px;
}

.site-nav a,
.segmented__item,
.social-chip,
.count-pill {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.site-nav a {
  padding: 9px 12px;
  color: var(--muted);
}

.site-nav a:hover,
.text-link:hover {
  color: var(--accent-dark);
}

.home-panel {
  padding: 34px 0 18px;
  background: var(--surface-soft);
  border-bottom: 1px solid var(--line);
}

.home-panel__grid,
.tool-details,
.workbench-grid {
  display: grid;
  gap: 22px;
}

.home-panel__grid {
  grid-template-columns: minmax(0, 1.1fr) minmax(360px, 0.9fr);
  align-items: stretch;
}

.home-panel__copy,
.launcher,
.page-title,
.tool-hero,
.workbench,
.side-panel,
.result-panel,
.preview-panel,
.color-result {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.home-panel__copy,
.launcher,
.page-title,
.tool-hero,
.workbench,
.side-panel,
.result-panel,
.preview-panel,
.color-result {
  padding: 24px;
}

.eyebrow,
.label,
label > span,
.metric-card span {
  display: block;
  color: var(--accent-dark);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 16px;
  font-size: clamp(2.35rem, 5vw, 4.7rem);
  line-height: 1;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 0;
  font-size: clamp(1.25rem, 2vw, 1.85rem);
  line-height: 1.18;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 8px;
  font-size: 1.08rem;
  line-height: 1.25;
  letter-spacing: 0;
}

.lede,
.tool-card p,
.site-footer p,
.mini-card span,
.form-hint,
.empty-state,
.rich-copy p,
.rich-copy li {
  color: var(--muted);
  line-height: 1.7;
}

.section,
.tools-page,
.tool-page {
  padding: 28px 0;
}

.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 16px;
}

.tool-section + .tool-section {
  margin-top: 30px;
}

.tool-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.tool-card {
  min-width: 0;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: transform 160ms ease, box-shadow 160ms ease, border-color 160ms ease;
}

.tool-card:hover {
  border-color: rgba(31, 157, 138, 0.42);
  box-shadow: var(--shadow);
  transform: translateY(-2px);
}

.tool-card__link {
  display: grid;
  grid-template-columns: 54px minmax(0, 1fr);
  gap: 12px;
  min-height: 164px;
  padding: 16px;
}

.tool-icon {
  display: inline-grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border-radius: var(--radius);
  background: #e2f2ee;
  color: var(--accent-dark);
  font-size: 0.82rem;
  font-weight: 900;
}

.tool-icon--large {
  width: 76px;
  height: 76px;
  font-size: 1rem;
}

.tool-card__body {
  display: grid;
  gap: 2px;
  min-width: 0;
  align-content: start;
}

.tool-card h3 {
  margin-bottom: 6px;
  font-size: 1.02rem;
}

.tool-card p {
  margin-bottom: 0;
  line-height: 1.58;
}

.tool-card__meta,
.toolbar,
.social-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.tool-card__meta {
  margin-bottom: 6px;
  color: var(--muted);
  font-size: 0.8rem;
}

.social-chip,
.count-pill {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 0 9px;
  color: var(--muted);
  font-size: 0.84rem;
}

.segmented {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
}

.segmented__item {
  padding: 9px 12px;
  color: var(--muted);
}

.segmented__item.is-active,
.segmented__item:hover {
  border-color: rgba(31, 157, 138, 0.48);
  background: #e2f2ee;
  color: var(--accent-dark);
}

.search-box,
label {
  display: grid;
  gap: 8px;
}

input,
textarea,
select {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fbfcfa;
  color: var(--ink);
  padding: 12px 13px;
}

input:focus,
textarea:focus,
select:focus {
  outline: 2px solid rgba(31, 157, 138, 0.22);
  border-color: rgba(31, 157, 138, 0.6);
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  padding: 0 14px;
  cursor: pointer;
  font-weight: 800;
}

.button:disabled {
  cursor: not-allowed;
  opacity: 0.58;
}

.button--primary {
  background: var(--accent);
  color: #ffffff;
}

.button--ghost {
  border-color: var(--line);
  background: var(--surface);
  color: var(--ink);
}

.button--danger {
  background: var(--danger);
  color: #ffffff;
}

.text-link {
  color: var(--accent-dark);
  font-weight: 800;
}

.catalog-filter,
.converter-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 220px auto;
  gap: 12px;
  align-items: end;
  margin-top: 18px;
}

.tool-page {
  display: grid;
  gap: 22px;
}

.tool-hero__main {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 18px;
  align-items: start;
  margin-top: 18px;
}

.workbench {
  display: grid;
  gap: 16px;
}

.workbench-grid {
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.86fr);
}

.workbench-narrow {
  display: grid;
  gap: 14px;
  max-width: 720px;
}

.stack-form,
.mini-list,
.admin-list,
.moderation-list,
.result-list,
.hash-grid {
  display: grid;
  gap: 12px;
}

.inline-check {
  display: inline-flex;
  grid-template-columns: auto;
  align-items: center;
  gap: 8px;
  color: var(--ink);
  font-weight: 700;
}

.inline-check input {
  width: auto;
}

.result-panel,
.preview-panel {
  min-height: 220px;
  overflow: auto;
  box-shadow: none;
}

.result-list mark {
  border-radius: 4px;
  background: #ffe7a8;
  color: var(--ink);
}

.result-row,
.hash-row,
.time-card,
.metric-card {
  display: grid;
  gap: 4px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fbfcfa;
}

.hash-row {
  grid-template-columns: 92px minmax(0, 1fr);
  align-items: start;
}

.hash-row code,
.result-row code {
  overflow-wrap: anywhere;
}

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

.metric-card strong {
  font-size: 1.55rem;
  line-height: 1.1;
}

.tool-details {
  grid-template-columns: minmax(0, 1fr) 330px;
  align-items: start;
}

.rich-copy {
  color: var(--ink);
}

.rich-copy h1,
.rich-copy h2,
.rich-copy h3 {
  margin-top: 18px;
}

.rich-copy ul {
  padding-left: 20px;
}

.rich-copy blockquote {
  margin: 0;
  padding: 14px 16px;
  border-left: 4px solid var(--accent);
  background: #eaf5f2;
}

.rich-copy pre {
  overflow: auto;
  padding: 14px;
  border-radius: var(--radius);
  background: #142025;
  color: #f7fbfb;
}

.preview-panel {
  background: #fbfcfa;
}

.mini-card {
  display: grid;
  gap: 8px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fbfcfa;
}

.mini-card:hover {
  border-color: rgba(31, 157, 138, 0.42);
}

.color-result {
  display: grid;
  grid-template-columns: 120px minmax(0, 1fr);
  gap: 16px;
  align-items: center;
  box-shadow: none;
}

.color-swatch {
  width: 120px;
  height: 120px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--accent);
}

.game-board,
.game-card-grid,
.game-puzzle,
.game-snake-grid,
.game-color-grid {
  min-width: 0;
}

.game-board {
  display: grid;
  min-height: 260px;
}

.game-reaction-pad {
  width: 100%;
  min-height: 260px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fbfcfa;
  color: var(--ink);
  cursor: pointer;
  font-size: 1.25rem;
  font-weight: 900;
  transition: background 160ms ease, border-color 160ms ease, transform 160ms ease;
}

.game-reaction-pad[data-state="waiting"] {
  background: var(--surface-warm);
  color: var(--amber);
}

.game-reaction-pad[data-state="ready"] {
  border-color: rgba(31, 157, 138, 0.55);
  background: #dff4ef;
  color: var(--accent-dark);
  transform: translateY(-1px);
}

.game-card-grid,
.game-puzzle,
.game-snake-grid,
.game-color-grid {
  display: grid;
  gap: 10px;
}

.game-card-grid,
.game-puzzle {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.game-tile {
  display: inline-grid;
  place-items: center;
  min-height: 68px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fbfcfa;
  color: var(--ink);
  cursor: pointer;
  font-weight: 900;
}

.game-tile:hover {
  border-color: rgba(31, 157, 138, 0.48);
}

.game-tile--hidden {
  background: #e2f2ee;
  color: var(--accent-dark);
}

.game-tile--empty {
  cursor: default;
  background: transparent;
  border-style: dashed;
}

.game-target {
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fbfcfa;
  color: var(--ink);
  font-size: 1.08rem;
  font-weight: 800;
  line-height: 1.55;
}

.game-snake-grid,
.game-color-grid {
  grid-template-columns: repeat(var(--game-grid-size), minmax(0, 1fr));
}

.game-snake-grid {
  width: min(100%, 420px);
  aspect-ratio: 1;
  gap: 3px;
  padding: 8px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fbfcfa;
}

.game-snake-cell {
  border-radius: 4px;
  background: var(--surface-soft);
}

.game-snake-cell.is-snake {
  background: var(--accent);
}

.game-snake-cell.is-food {
  background: var(--amber);
}

.game-keypad {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 88px));
  gap: 8px;
  margin-top: 12px;
}

.game-keypad [data-snake-dir="up"] {
  grid-column: 2;
}

.game-keypad [data-snake-dir="left"] {
  grid-column: 1;
}

.game-keypad [data-snake-dir="down"] {
  grid-column: 2;
}

.game-keypad [data-snake-dir="right"] {
  grid-column: 3;
}

.game-color-grid {
  width: min(100%, 440px);
  aspect-ratio: 1;
}

.game-color-tile {
  min-height: 42px;
  border: 1px solid rgba(24, 32, 37, 0.08);
  border-radius: var(--radius);
  cursor: pointer;
}

.game-color-tile:hover {
  outline: 2px solid rgba(31, 157, 138, 0.24);
}

.empty-state,
.loading-state {
  padding: 18px;
  border: 1px dashed var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.62);
}

.form-hint[data-tone="ok"] {
  color: var(--accent-dark);
}

.form-hint[data-tone="error"] {
  color: var(--danger);
}

.summary-page {
  display: grid;
  gap: 22px;
  padding: 28px 0;
}

.summary-intro__top,
.summary-detail-actions {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 16px;
}

.summary-form {
  display: grid;
  gap: 12px;
  margin-top: 18px;
}

.summary-options {
  display: grid;
  grid-template-columns: 180px minmax(180px, 0.7fr) 180px auto;
  gap: 12px;
  align-items: end;
}

.summary-options input,
.summary-options select,
.summary-provider-fields input {
  height: 52px;
}

.summary-provider-fields {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(240px, 0.7fr);
  gap: 12px;
}

.summary-provider-fields[hidden] {
  display: none;
}

.summary-grid,
.summary-detail {
  display: grid;
  gap: 14px;
}

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

.summary-card {
  display: grid;
  gap: 12px;
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  padding: 16px;
  transition: transform 160ms ease, box-shadow 160ms ease, border-color 160ms ease;
}

.summary-card:hover {
  border-color: rgba(31, 157, 138, 0.42);
  box-shadow: var(--shadow);
  transform: translateY(-2px);
}

.summary-card__main {
  display: grid;
  gap: 8px;
  min-width: 0;
}

.summary-card__meta,
.summary-points,
.summary-meta-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.summary-card__meta span,
.summary-points span,
.summary-meta-list span {
  display: inline-flex;
  align-items: center;
  min-height: 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fbfcfa;
  color: var(--muted);
  padding: 0 8px;
  font-size: 0.8rem;
}

.summary-card__meta span[data-status="completed"] {
  color: var(--accent-dark);
}

.summary-card__meta span[data-status="failed"] {
  color: var(--danger);
}

.summary-card h3,
.summary-card p {
  margin-bottom: 0;
}

.summary-card p,
.summary-card small {
  color: var(--muted);
  line-height: 1.6;
}

.summary-card__delete {
  justify-self: start;
}

.summary-detail {
  grid-template-columns: minmax(0, 1fr) 330px;
  align-items: start;
}

.summary-side {
  display: grid;
  gap: 12px;
}

.summary-source {
  overflow-wrap: anywhere;
}

.summary-key-list ul {
  margin: 8px 0 0;
  padding-left: 20px;
  color: var(--muted);
  line-height: 1.7;
}

.summary-reader pre {
  max-height: 420px;
  overflow: auto;
  margin: 0;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.site-footer {
  padding: 18px 0 34px;
}

.site-footer__inner {
  border-top: 1px solid var(--line);
}

@media (max-width: 980px) {
  .home-panel__grid,
  .workbench-grid,
  .tool-details,
  .summary-detail {
    grid-template-columns: 1fr;
  }

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

  .catalog-filter,
  .converter-grid,
  .summary-options,
  .summary-provider-fields {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 700px) {
  .site-shell {
    width: min(100% - 20px, 100%);
  }

  .site-header__inner,
  .site-footer__inner,
  .section-heading,
  .tool-hero__main,
  .summary-intro__top,
  .summary-detail-actions {
    align-items: stretch;
    grid-template-columns: 1fr;
  }

  .site-header__inner,
  .site-footer__inner,
  .section-heading,
  .summary-intro__top,
  .summary-detail-actions {
    flex-direction: column;
  }

  .site-nav {
    width: 100%;
  }

  .site-nav a {
    flex: 1;
    text-align: center;
  }

  .tool-grid,
  .time-grid,
  .metric-grid,
  .catalog-filter,
  .converter-grid,
  .summary-grid,
  .summary-options,
  .summary-provider-fields {
    grid-template-columns: 1fr;
  }

  .home-panel__copy,
  .launcher,
  .page-title,
  .tool-hero,
  .workbench,
  .side-panel,
  .result-panel,
  .preview-panel,
  .color-result,
  .summary-card {
    padding: 16px;
  }

  h1 {
    font-size: 2.3rem;
  }

  .color-result {
    grid-template-columns: 1fr;
  }

  .game-tile {
    min-height: 54px;
  }

  .game-keypad {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}