:root {
  --tool-ink: #15231f;
  --tool-muted: #5e6f68;
  --tool-line: rgba(21, 35, 31, 0.12);
  --tool-paper: #ffffff;
  --tool-soft: #eef7f3;
  --tool-teal: #1e8a7a;
  --tool-coral: #f06a3c;
  --tool-amber: #f3bd4e;
  --tool-shadow: 0 20px 52px rgba(21, 35, 31, 0.1);
}

body.brand-refresh.tool-subpage,
body.brand-refresh.tools-hub-page {
  background:
    radial-gradient(circle at 12% 5%, rgba(30, 138, 122, 0.12), transparent 32%),
    radial-gradient(circle at 90% 20%, rgba(240, 106, 60, 0.12), transparent 28%),
    #f8fbf8;
}

.tools-hub {
  max-width: 1180px;
  margin: 0 auto;
  padding: clamp(2rem, 5vw, 4rem) 1rem 4rem;
}

.tools-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(280px, 0.95fr);
  gap: clamp(1.5rem, 4vw, 3rem);
  align-items: center;
  padding: clamp(1.4rem, 4vw, 3rem);
  border: 1px solid rgba(30, 138, 122, 0.16);
  border-radius: 28px;
  background:
    linear-gradient(135deg, rgba(238, 247, 243, 0.92), rgba(255, 255, 255, 0.86)),
    repeating-linear-gradient(90deg, rgba(21, 35, 31, 0.045) 0 1px, transparent 1px 82px);
  box-shadow: var(--tool-shadow);
}

.tools-hero h1 {
  margin: 0.7rem 0 1rem;
  color: var(--tool-ink);
  font-family: "Fraunces", Georgia, serif;
  font-size: clamp(3rem, 7vw, 6.4rem);
  line-height: 0.9;
  letter-spacing: 0;
}

.tools-hero p {
  max-width: 620px;
  color: var(--tool-muted);
  font-size: clamp(1rem, 1.8vw, 1.25rem);
  line-height: 1.75;
}

.tools-hero-panel {
  display: grid;
  gap: 0.85rem;
}

.tools-hero-chip,
.tool-chip {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  gap: 0.45rem;
  padding: 0.45rem 0.75rem;
  border-radius: 999px;
  color: var(--tool-coral);
  background: rgba(240, 106, 60, 0.11);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.tools-hero-stat {
  padding: 1rem;
  border: 1px solid var(--tool-line);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.74);
}

.tools-hero-stat strong {
  display: block;
  color: var(--tool-ink);
  font-size: 1.35rem;
  font-weight: 900;
}

.tools-hero-stat span {
  display: block;
  margin-top: 0.25rem;
  color: var(--tool-muted);
}

.tool-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin: 1.5rem 0;
}

.tool-filter button,
.tool-action,
.tool-secondary,
.tool-danger {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  min-height: 44px;
  padding: 0.72rem 1rem;
  border: 0;
  border-radius: 999px;
  font-family: "Be Vietnam Pro", Inter, sans-serif;
  font-weight: 900;
  cursor: pointer;
}

.tool-filter button,
.tool-secondary {
  color: var(--tool-ink);
  background: #fff;
  border: 1px solid var(--tool-line);
}

.tool-filter button.active,
.tool-action {
  color: #fff;
  background: var(--tool-ink);
  box-shadow: 0 14px 34px rgba(21, 35, 31, 0.16);
}

.tool-danger {
  color: #b42318;
  background: #fff1ef;
}

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

.tool-tile {
  display: grid;
  min-height: 230px;
  padding: 1.25rem;
  border: 1px solid var(--tool-line);
  border-radius: 22px;
  color: var(--tool-ink);
  background: #fff;
  box-shadow: 0 16px 38px rgba(21, 35, 31, 0.06);
  text-decoration: none;
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.tool-tile:hover {
  transform: translateY(-4px);
  box-shadow: var(--tool-shadow);
}

.tool-tile-icon {
  display: grid;
  place-items: center;
  width: 56px;
  height: 56px;
  border-radius: 18px;
  color: #fff;
  background: linear-gradient(135deg, var(--tool-teal), #31b8a0);
  font-size: 1.35rem;
}

.tool-tile h3 {
  margin: 1rem 0 0.5rem;
  font-size: 1.35rem;
  line-height: 1.2;
}

.tool-tile p {
  margin: 0;
  color: var(--tool-muted);
  line-height: 1.6;
}

.tool-tile-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 1.1rem;
  color: var(--tool-teal);
  font-weight: 900;
}

.tool-shell {
  max-width: 1180px;
  margin: 0 auto;
  padding: clamp(1.5rem, 4vw, 3rem) 1rem 4rem;
}

.tool-layout {
  display: grid;
  grid-template-columns: minmax(290px, 0.88fr) minmax(0, 1.12fr);
  gap: 1rem;
  align-items: start;
}

.tool-panel,
.tool-result-panel {
  border: 1px solid var(--tool-line);
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.92);
  box-shadow: 0 16px 42px rgba(21, 35, 31, 0.07);
  padding: clamp(1rem, 2.4vw, 1.5rem);
}

.tool-panel h2,
.tool-result-panel h2 {
  margin: 0 0 1rem;
  color: var(--tool-ink);
  font-size: 1.35rem;
}

.tool-field {
  display: grid;
  gap: 0.45rem;
  margin-bottom: 1rem;
}

.tool-field label,
.tool-label {
  color: var(--tool-muted);
  font-size: 0.9rem;
  font-weight: 800;
}

.tool-field textarea,
.tool-field input,
.tool-field select,
.tool-input,
.tool-textarea {
  width: 100%;
  min-height: 44px;
  box-sizing: border-box;
  border: 1px solid var(--tool-line);
  border-radius: 16px;
  color: var(--tool-ink);
  background: #fff;
  padding: 0.75rem 0.85rem;
  font-family: "Be Vietnam Pro", Inter, sans-serif;
  font-size: 1rem;
  outline: none;
}

.tool-field textarea,
.tool-textarea {
  min-height: 190px;
  resize: vertical;
}

.tool-field textarea:focus,
.tool-field input:focus,
.tool-field select:focus,
.tool-input:focus,
.tool-textarea:focus {
  border-color: rgba(30, 138, 122, 0.6);
  box-shadow: 0 0 0 4px rgba(30, 138, 122, 0.1);
}

.tool-row,
.tool-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  align-items: center;
}

.tool-row.between {
  justify-content: space-between;
}

.tool-mini {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 38px;
  min-height: 38px;
  border: 1px solid var(--tool-line);
  border-radius: 999px;
  color: var(--tool-ink);
  background: #fff;
  font-weight: 900;
  cursor: pointer;
}

.tool-mini.primary {
  color: #fff;
  background: var(--tool-teal);
}

.tool-mini.danger {
  color: #b42318;
  background: #fff1ef;
}

.tool-switch {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--tool-ink);
  font-weight: 800;
}

.tool-switch input {
  width: 18px;
  height: 18px;
}

.tool-result {
  display: grid;
  place-items: center;
  min-height: 220px;
  border: 1px dashed rgba(30, 138, 122, 0.35);
  border-radius: 22px;
  color: var(--tool-muted);
  background: linear-gradient(135deg, rgba(238, 247, 243, 0.82), rgba(255,255,255,0.86));
  text-align: center;
  padding: 1.25rem;
}

.tool-result strong {
  color: var(--tool-ink);
  font-size: clamp(1.8rem, 4vw, 3rem);
  line-height: 1.15;
}

.tool-result small {
  display: block;
  margin-top: 0.65rem;
  color: var(--tool-muted);
  font-weight: 800;
}

.tool-result.spin strong {
  animation: tool-pop 0.42s ease both;
}

@keyframes tool-pop {
  from { transform: scale(0.92); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

.tool-history,
.tool-list {
  display: grid;
  gap: 0.55rem;
  margin-top: 1rem;
}

.tool-history-item,
.tool-list-item,
.group-card,
.team-row,
.flashcard-row,
.checklist-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.75rem 0.85rem;
  border: 1px solid var(--tool-line);
  border-radius: 16px;
  background: #fff;
}

.team-row.leader {
  border-color: rgba(243, 189, 78, 0.7);
  background: linear-gradient(135deg, rgba(243, 189, 78, 0.16), #fff);
}

.team-info,
.flashcard-info,
.checklist-info {
  min-width: 0;
}

.team-info strong,
.flashcard-info strong,
.checklist-info strong {
  display: block;
  color: var(--tool-ink);
}

.team-info span,
.flashcard-info span,
.checklist-info span {
  display: block;
  margin-top: 0.18rem;
  color: var(--tool-muted);
  font-size: 0.9rem;
  font-weight: 700;
}

.team-score-controls {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.4rem;
}

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

.group-card {
  display: block;
}

.group-card h3 {
  margin: 0 0 0.6rem;
}

.group-card ul {
  margin: 0;
  padding-left: 1.1rem;
  color: var(--tool-muted);
  line-height: 1.75;
}

.tool-message {
  min-height: 1.4rem;
  margin-top: 0.5rem;
  color: var(--tool-muted);
  font-weight: 700;
}

.tool-message.error {
  color: #b42318;
}

.tool-message.success {
  color: var(--tool-teal);
}

.tool-progress {
  height: 12px;
  border-radius: 999px;
  background: #e8efec;
  overflow: hidden;
}

.tool-progress span {
  display: block;
  height: 100%;
  width: 0%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--tool-teal), var(--tool-amber));
  transition: width 0.2s ease;
}

.tool-toast {
  position: fixed;
  right: 20px;
  bottom: 24px;
  z-index: 1000;
  max-width: min(320px, calc(100vw - 32px));
  padding: 0.85rem 1rem;
  border-radius: 16px;
  color: #fff;
  background: var(--tool-ink);
  box-shadow: var(--tool-shadow);
  opacity: 0;
  transform: translateY(12px);
  pointer-events: none;
  transition: opacity 0.18s ease, transform 0.18s ease;
}

.tool-toast.show {
  opacity: 1;
  transform: translateY(0);
}

.timer-mode-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.55rem;
}

.timer-mode-grid button.active {
  color: #fff !important;
  background: var(--tool-teal) !important;
}

.score-value {
  font-size: clamp(2rem, 6vw, 4.5rem);
  font-weight: 900;
  color: var(--tool-teal);
}

.scoreboard-list {
  display: grid;
  gap: 0.65rem;
}

.flashcard-stage {
  min-height: 260px;
  display: grid;
  place-items: center;
  border: 1px solid var(--tool-line);
  border-radius: 24px;
  background: linear-gradient(135deg, #fff, var(--tool-soft));
  padding: 1.5rem;
  cursor: pointer;
  text-align: center;
}

.flashcard-stage strong {
  font-size: clamp(1.6rem, 4vw, 3.3rem);
  line-height: 1.2;
}

.flashcard-stage span {
  color: var(--tool-muted);
  font-weight: 800;
}

.checklist-row.done {
  opacity: 0.72;
}

.checklist-row.done strong {
  text-decoration: line-through;
}

.tool-empty {
  padding: 1rem;
  border: 1px dashed var(--tool-line);
  border-radius: 16px;
  color: var(--tool-muted);
  background: rgba(255, 255, 255, 0.7);
  font-weight: 800;
}

.timer-display-card {
  display: grid;
  place-items: center;
  min-height: 320px;
  border-radius: 26px;
  color: var(--tool-ink);
  background:
    linear-gradient(135deg, rgba(238, 247, 243, 0.9), rgba(255, 255, 255, 0.96));
  border: 1px solid var(--tool-line);
  text-align: center;
  padding: 1.2rem;
}

.timer-display-card.danger {
  background: linear-gradient(135deg, rgba(255, 241, 239, 0.96), #fff);
}

.timer-clock-big {
  font-size: clamp(3.4rem, 11vw, 8rem);
  line-height: 0.95;
  font-weight: 900;
  letter-spacing: 0;
}

.timer-title {
  margin-top: 0.8rem;
  color: var(--tool-muted);
  font-weight: 900;
}

.tool-pill-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin: 0.75rem 0;
}

.tool-pill-row button {
  padding: 0.52rem 0.75rem;
  border: 1px solid var(--tool-line);
  border-radius: 999px;
  color: var(--tool-ink);
  background: #fff;
  font-weight: 900;
  cursor: pointer;
}

@media (max-width: 920px) {
  .tools-hero,
  .tool-layout,
  .tools-grid {
    grid-template-columns: 1fr;
  }

  .timer-mode-grid,
  .group-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 560px) {
  .tool-shell,
  .tools-hub {
    padding-inline: 0.85rem;
  }

  .tool-row,
  .tool-actions {
    align-items: stretch;
  }

  .tool-action,
  .tool-secondary,
  .tool-danger,
  .tool-filter button {
    width: 100%;
  }

  .timer-mode-grid,
  .group-grid {
    grid-template-columns: 1fr;
  }
}