.tools-page {
  max-width: 1180px;
  margin: 0 auto;
  padding: 28px 24px 38px;
}

.tools-page__header,
.tools-shell-head {
  border: 1px solid var(--border);
  background: linear-gradient(135deg, #ffffff, #f5f2ee);
  border-radius: 12px;
  padding: 20px;
  box-shadow: var(--shadow-1);
}

.tools-shell-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
}

.tools-page--shell {
  max-width: none;
  padding: 16px 0 24px;
}

.tools-page--shell .tools-shell-head {
  margin: 0 16px;
}

.tools-page__eyebrow {
  margin: 0 0 6px;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--text-faint);
  font-size: 11px;
  font-weight: 700;
}

.tools-page h1 {
  margin: 0;
  font-size: 30px;
  line-height: 1.1;
}

.tools-page p {
  margin: 8px 0 0;
  color: var(--text-muted);
  max-width: 75ch;
}

.tools-grid {
  margin-top: 16px;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 14px;
}

.tool-card {
  border: 1px solid var(--border);
  border-radius: 10px;
  background: #fff;
  padding: 16px;
  box-shadow: var(--shadow-1);
  color: var(--text);
  text-decoration: none;
  transition: transform .12s ease, box-shadow .12s ease, border-color .12s ease;
}

.tool-card:hover {
  text-decoration: none;
  border-color: var(--border-strong);
  transform: translateY(-2px);
  box-shadow: var(--shadow-2);
}

.tool-card__icon {
  font-size: 22px;
}

.tool-card__title {
  margin-top: 10px;
  font-size: 19px;
  font-weight: 700;
}

.tool-card__summary {
  margin: 6px 0 10px;
  font-size: 14px;
  color: var(--text-muted);
}

.tool-card__meta {
  display: flex;
  gap: 8px;
}

.tool-embed-wrap {
  margin-top: 14px;
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  background: #fff;
  box-shadow: var(--shadow-1);
}

.tools-page--shell .tool-embed-wrap {
  margin-left: 0;
  margin-right: 0;
  border-radius: 0;
  border-left: 0;
  border-right: 0;
}

.tool-embed {
  display: block;
  width: 100%;
  min-height: calc(100vh - 215px);
  border: 0;
}

@media (max-width: 900px) {
  .tools-page {
    padding: 20px 12px 24px;
  }

  .tools-page--shell {
    padding: 12px 0 20px;
  }

  .tools-page--shell .tools-shell-head {
    margin: 0 12px;
  }

  .tools-shell-head {
    flex-direction: column;
    align-items: flex-start;
  }

  .tool-embed {
    min-height: calc(100vh - 260px);
  }
}

.buzzer-grid {
  margin-top: 14px;
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.buzzer-host-live {
  margin-top: 14px;
  display: grid;
  gap: 14px;
}

.buzzer-grid--single {
  grid-template-columns: 1fr;
  max-width: 680px;
}

.buzzer-card {
  border: 1px solid var(--border);
  border-radius: 12px;
  background: #fff;
  box-shadow: var(--shadow-1);
  padding: 16px;
}

.buzzer-card h2 {
  margin: 0 0 10px;
}

.buzzer-card--compact {
  max-width: 500px;
}

.buzzer-card--live {
  min-height: calc(100vh - 240px);
  display: grid;
  grid-template-rows: auto auto auto 1fr;
  gap: 12px;
}

.buzzer-live-topbar {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 10px;
}

.buzzer-live-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  font-size: 15px;
}

.buzzer-card label {
  display: block;
  margin-top: 8px;
  font-size: 12px;
  color: var(--text-faint);
  text-transform: uppercase;
  letter-spacing: .06em;
  font-weight: 700;
}

.buzzer-card input {
  width: 100%;
  margin-top: 4px;
  border: 1px solid var(--border-strong);
  border-radius: 8px;
  padding: 10px;
}

.buzzer-card button {
  margin-top: 12px;
}

.buzzer-meta {
  margin-top: 6px;
}

.buzzer-note {
  margin: 8px 0 0;
  color: var(--text-faint);
  font-size: 13px;
}

.buzzer-actions {
  margin-top: 10px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.buzzer-winner {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px;
  background: linear-gradient(135deg, #fff8e8, #fff2d4);
}

.buzzer-winner__label {
  font-size: 12px;
  color: var(--text-faint);
  text-transform: uppercase;
  letter-spacing: .06em;
}

.buzzer-winner__name {
  margin-top: 4px;
  font-size: clamp(24px, 3.6vw, 44px);
  font-weight: 800;
}

.buzzer-order-wrap {
  min-height: 0;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: #fff;
  overflow: auto;
}

.buzzer-order-list {
  list-style: none;
  margin: 0;
  padding: 8px;
  display: grid;
  gap: 8px;
}

.buzzer-order-item {
  display: grid;
  grid-template-columns: 88px 1fr;
  align-items: center;
  gap: 10px;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 12px;
  background: #fff;
}

.buzzer-order-item--empty {
  color: var(--text-muted);
}

.buzzer-order-item.is-first {
  border-color: #e3bd63;
  background: linear-gradient(135deg, #fff8ea, #ffeccc);
}

.buzzer-order-item.is-second {
  border-color: #c6cbd4;
  background: linear-gradient(135deg, #f8f8fa, #f0f2f6);
}

.buzzer-order-item.is-third {
  border-color: #d8ba8c;
  background: linear-gradient(135deg, #fbf4eb, #f4e5d5);
}

.buzzer-order-item.is-pending {
  border-color: #d7d7d7;
  background: #f5f5f5;
}

.buzzer-order-item.is-pending .buzzer-order-item__rank,
.buzzer-order-item.is-pending .buzzer-order-item__name {
  color: #8a8a8a;
}

.buzzer-order-item__rank {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  border-radius: 10px;
  background: var(--surface);
  border: 1px solid var(--border);
  font-size: 24px;
  font-weight: 800;
  letter-spacing: 0.02em;
}

.buzzer-order-item__name {
  font-size: clamp(22px, 2.8vw, 38px);
  font-weight: 800;
  line-height: 1.1;
}

.buzzer-qr {
  margin-top: 10px;
  width: 148px;
  height: 148px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fff;
}

.buzzer-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 6px;
  max-height: 320px;
  overflow: auto;
}

.buzzer-list li {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px;
}

.buzzer-status {
  margin-top: 12px;
  min-height: 22px;
  color: var(--text-muted);
}

.buzzer-banner {
  margin-top: 12px;
  border: 1px solid #f3d5a4;
  border-radius: 10px;
  background: #fff6e8;
  color: #8f4b10;
  padding: 12px;
  white-space: pre-line;
}

.buzzer-modal {
  position: fixed;
  inset: 0;
  z-index: 300;
}

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

.buzzer-modal.is-open {
  display: block;
}

.buzzer-modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(20, 20, 20, 0.55);
}

.buzzer-modal__dialog {
  position: relative;
  width: min(560px, calc(100vw - 24px));
  margin: 44px auto;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: #fff;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.24);
  padding: 14px;
}

body.buzzer-modal-open {
  overflow: hidden;
}

.buzzer-modal__head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
}

.buzzer-modal__head h2 {
  margin: 0;
}

.buzzer-modal__body {
  margin-top: 10px;
  display: grid;
  gap: 10px;
}

.buzzer-modal .buzzer-qr {
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
}

.buzzer-card--center {
  text-align: center;
}

.buzzer-button {
  margin-top: 14px;
  min-width: 220px;
  min-height: 74px;
  font-size: 28px;
  font-weight: 800;
}

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

  .buzzer-card--live {
    min-height: calc(100vh - 280px);
  }

  .buzzer-live-topbar {
    flex-direction: column;
  }

  .buzzer-order-item {
    grid-template-columns: 62px 1fr;
  }

  .buzzer-order-item__rank {
    min-height: 36px;
    font-size: 18px;
  }
}

.quiz-game {
  --quiz-bg-a: #fff9ec;
  --quiz-bg-b: #eef9ff;
  --quiz-ink: #1e1c1a;
  --quiz-accent: #ff7b00;
  --quiz-accent-2: #0096c7;
  --quiz-success: #159947;
}

.quiz-game .tools-shell-head {
  background: linear-gradient(140deg, #fff6db 0%, #ffe8cf 35%, #e8f6ff 100%);
  border-color: #e6d7c4;
}

.quiz-builder {
  margin-top: 14px;
  display: grid;
  grid-template-columns: 1.3fr .9fr;
  gap: 14px;
}

.quiz-card {
  border: 1px solid #d6c8b7;
  border-radius: 14px;
  background: linear-gradient(145deg, #ffffff, #f8f3ed);
  box-shadow: var(--shadow-1);
  padding: 16px;
}

.quiz-card--stack {
  display: grid;
  gap: 10px;
}

.quiz-card h2,
.quiz-card h3 {
  margin: 0;
}

.quiz-card label {
  display: block;
  margin-top: 6px;
  margin-bottom: 4px;
}

.quiz-card input[type="text"],
.quiz-card input[type="number"],
.quiz-card textarea {
  width: 100%;
  border: 1px solid #d8c9b7;
  border-radius: 8px;
  padding: 8px 10px;
  background: #fff;
  color: var(--text);
  font-family: inherit;
  box-sizing: border-box;
}

.quiz-card textarea {
  resize: vertical;
  min-height: 70px;
}

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

.quiz-questions-list {
  display: grid;
  gap: 10px;
}

.quiz-question-editor {
  border: 1px solid #e1d8cb;
  border-radius: 10px;
  background: #fff;
  padding: 10px;
}

.quiz-question-editor__head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}

.quiz-mini-actions {
  display: flex;
  gap: 6px;
}

.quiz-options-editor {
  margin-top: 8px;
  display: grid;
  gap: 6px;
}

.quiz-option-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
  align-items: center;
}

.quiz-radio-label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--text-muted);
}

.quiz-json-help {
  border: 1px dashed #ccb79e;
  border-radius: 10px;
  padding: 10px;
  background: #fff8ef;
}

.quiz-json-help summary {
  cursor: pointer;
  font-weight: 700;
}

.quiz-json-help textarea {
  width: 100%;
  margin-top: 8px;
  border: 1px solid #dccbb8;
  border-radius: 8px;
  background: #fffefc;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  font-size: 12px;
  line-height: 1.45;
  padding: 10px;
}

.quiz-settings-grid {
  margin-top: 8px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.quiz-settings-grid label {
  display: grid;
  gap: 4px;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: .04em;
  color: var(--text-faint);
}

.quiz-settings-grid input {
  border: 1px solid #d8c9b7;
  border-radius: 8px;
  padding: 8px;
}

.quiz-note {
  margin: 0;
  color: var(--text-muted);
  font-size: 13px;
}

.quiz-live {
  margin-top: 14px;
  display: grid;
  grid-template-columns: 1.35fr .85fr;
  gap: 14px;
}

.quiz-game[data-quiz-live="1"] #quiz-builder-section {
  display: none !important;
}

.quiz-card--projector {
  min-height: calc(100vh - 220px);
  background: radial-gradient(circle at 10% 0%, #fff8e8 0%, #fff2dc 38%, #eaf6ff 100%);
  display: grid;
  grid-template-rows: auto auto 1fr auto auto;
  gap: 10px;
}

.quiz-stage-head {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  align-items: flex-start;
}

.quiz-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border-radius: 999px;
  padding: 4px 10px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .07em;
  text-transform: uppercase;
  color: #7a3900;
  background: #ffe8c7;
  border: 1px solid #efc692;
}

.quiz-join-code-display {
  font-size: clamp(24px, 3.2vw, 44px);
  font-weight: 900;
  letter-spacing: .06em;
}

.quiz-stage-head h2 {
  margin: 6px 0 0;
  font-size: clamp(24px, 3vw, 40px);
  line-height: 1.1;
}

.quiz-stage-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: flex-end;
}

.quiz-stage-actions [hidden] {
  display: none !important;
}

.quiz-stage-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  font-size: 15px;
}

.quiz-projector-panel {
  border: 1px solid #dcc9b4;
  border-radius: 14px;
  background: linear-gradient(145deg, #fff, #f7f4ef);
  padding: 12px;
  overflow: auto;
}

.quiz-question-prompt {
  font-size: clamp(24px, 3vw, 42px);
  line-height: 1.2;
  font-weight: 900;
  color: var(--quiz-ink);
}

.quiz-md-content p {
  margin: 0;
}

.quiz-md-content p + p {
  margin-top: 10px;
}

.quiz-md-content code,
.quiz-md-inline code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  background: #f2f4f7;
  border: 1px solid #d7dce3;
  border-radius: 7px;
  padding: .08em .34em;
  font-size: .88em;
}

.quiz-md-code {
  margin: 8px 0;
  border: 1px solid #d5dbe5;
  border-radius: 12px;
  background: linear-gradient(145deg, #f9fbff, #f2f6fb);
  padding: 10px;
  overflow-x: auto;
}

.quiz-md-content .quiz-md-code {
  display: block;
}

.quiz-md-code code {
  display: block;
  border: 0;
  background: transparent;
  padding: 0;
  font-size: .78em;
  line-height: 1.35;
}

.quiz-md-code-lang {
  display: inline-block;
  margin-bottom: 6px;
  font-size: 11px;
  letter-spacing: .05em;
  text-transform: uppercase;
  color: #46607d;
}

.quiz-projector-panel .quiz-md-code-lang {
  display: none;
}

.quiz-projector-panel .quiz-md-code {
  margin-top: 4px;
  padding-top: 8px;
}

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

.quiz-option-card {
  border: 1px solid #d2d6dc;
  border-radius: 12px;
  background: #fff;
  padding: 10px;
  display: grid;
  grid-template-columns: 42px 1fr;
  gap: 10px;
  align-items: center;
  font-size: clamp(18px, 2.1vw, 30px);
  font-weight: 700;
}

.quiz-option-card.is-correct {
  border-color: #60b778;
  background: linear-gradient(140deg, #ebfff1, #d8fbe6);
}

.quiz-option-label {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  border-radius: 10px;
  border: 1px solid #d6d6d6;
  background: #f4f4f4;
}

.quiz-big-message {
  display: grid;
  place-items: center;
  min-height: 240px;
  text-align: center;
  font-size: clamp(28px, 4vw, 54px);
  font-weight: 900;
  color: #1f4f76;
}

.quiz-marking-note {
  margin: 10px 0 0;
  font-size: clamp(16px, 1.4vw, 21px);
  font-weight: 700;
  color: #2a527a;
}

.quiz-question-scores {
  border: 1px solid #d5c7b7;
  border-radius: 12px;
  background: #fff;
  padding: 10px;
  margin-top: 10px;
}

.quiz-score-header {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
}

.quiz-score-header h3 {
  margin: 0;
}

.quiz-score-badges {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.quiz-score-badge {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  padding: 4px 9px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .01em;
}

.quiz-score-badge--responded {
  border: 1px solid #6ab584;
  background: #e8f8ee;
  color: #0f6f38;
}

.quiz-score-badge--pending {
  border: 1px solid #d6cab7;
  background: #f4efe8;
  color: #6f624f;
}

.quiz-question-score-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 6px;
}

.quiz-question-score-list li {
  border: 1px solid #e0d7cd;
  border-radius: 9px;
  padding: 7px 10px;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 10px;
  font-weight: 700;
}

.quiz-score-row-left {
  min-width: 0;
  flex: 1;
}

.quiz-score-row-name {
  display: block;
}

.quiz-score-row-answer {
  margin-top: 4px;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-muted);
  line-height: 1.35;
  word-break: break-word;
}

.quiz-score-row-right {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.quiz-question-score-list li.is-responded {
  border-color: #66b57f;
  background: linear-gradient(145deg, #effdf3, #def6e6);
}

.quiz-question-score-list li.is-responded span {
  color: #0f6f38;
}

.quiz-question-score-list li.is-pending {
  border-color: #ddd2c4;
  background: #f8f5f0;
}

.quiz-question-score-list li.is-pending span {
  color: #8b7c68;
}

.quiz-final-podium {
  border: 1px solid #dbc8ae;
  border-radius: 12px;
  background: linear-gradient(145deg, #fff7df, #fff0d2);
  padding: 12px;
}

.quiz-podium {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.quiz-podium-card {
  border: 1px solid #cfb88f;
  border-radius: 10px;
  padding: 10px;
  text-align: center;
}

.quiz-podium-card--1 { background: linear-gradient(145deg, #fff4c2, #fbe386); }
.quiz-podium-card--2 { background: linear-gradient(145deg, #f8fbff, #dfe6ef); }
.quiz-podium-card--3 { background: linear-gradient(145deg, #ffe9d7, #efc39f); }

.quiz-podium-medal {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: .06em;
  font-weight: 700;
}

.quiz-podium-name {
  margin-top: 6px;
  font-size: clamp(18px, 2vw, 24px);
  font-weight: 900;
}

.quiz-podium-score {
  margin-top: 4px;
  font-size: 16px;
  font-weight: 700;
}

.quiz-final-list {
  margin: 12px 0 0;
  padding-left: 22px;
  display: grid;
  gap: 6px;
}

.quiz-final-list li {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  border-bottom: 1px solid #ead6be;
  padding-bottom: 4px;
}

.quiz-join-box {
  text-align: center;
  border: 1px solid #ddccba;
  border-radius: 10px;
  background: #fff;
  padding: 10px;
}

.quiz-join-qr {
  width: min(220px, 100%);
  aspect-ratio: 1 / 1;
  border: 1px solid #d8ccbf;
  border-radius: 10px;
  background: #fff;
}

.quiz-participants-list {
  list-style: none;
  margin: 0;
  padding: 0;
  max-height: 410px;
  overflow: auto;
  display: grid;
  gap: 8px;
}

.quiz-participant-item {
  border: 1px solid #d8d8d8;
  border-radius: 10px;
  padding: 8px;
  background: #fff;
}

.quiz-participant-item.is-pending {
  background: #f5f5f5;
  color: #777;
}

.quiz-participant-item.is-responded {
  border-color: #72b38a;
}

.quiz-participant-top {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  align-items: center;
}

.quiz-participant-answer {
  margin-top: 6px;
  font-size: 13px;
  color: var(--text-muted);
}

.quiz-grade-buttons {
  display: flex;
  gap: 6px;
}

.quiz-grade-btn {
  min-width: 34px;
  min-height: 34px;
  padding: 0 8px;
  font-size: 18px;
  font-weight: 900;
  line-height: 1;
}

.quiz-grade-btn--correct {
  border-color: #8ecaa3;
  color: #0f6f38;
  background: #f0fbf3;
}

.quiz-grade-btn--incorrect {
  border-color: #e0a4a4;
  color: #8c1f1f;
  background: #fff3f3;
}

.quiz-grade-btn.is-selected {
  box-shadow: 0 0 0 2px rgba(0, 120, 212, 0.2);
}

.quiz-confetti-layer {
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 220;
}

.quiz-confetti-piece {
  position: absolute;
  top: -14px;
  width: 10px;
  height: 16px;
  opacity: .9;
  transform: rotate(0deg);
  animation-name: quiz-confetti-fall;
  animation-timing-function: ease-in;
  animation-fill-mode: forwards;
}

@keyframes quiz-confetti-fall {
  0% {
    transform: translateY(0) rotate(0deg);
    opacity: .95;
  }
  100% {
    transform: translateY(102vh) rotate(620deg);
    opacity: .2;
  }
}

.quiz-player-card {
  text-align: left;
  background: linear-gradient(145deg, #fff9e8, #e8f6ff);
}

.quiz-student-prompt {
  margin-top: 6px;
  font-size: clamp(22px, 3.2vw, 36px);
  line-height: 1.22;
  font-weight: 900;
}

.quiz-answer-btn {
  min-height: 72px;
  font-size: clamp(20px, 2.1vw, 28px);
}

.quiz-answer-btn strong {
  display: inline-block;
  width: 28px;
}

.quiz-student-feedback {
  margin-top: 10px;
  font-size: 20px;
  font-weight: 800;
  color: #0f6f38;
}

#student-text-answer {
  width: 100%;
  border: 1px solid #d8cab8;
  border-radius: 10px;
  padding: 10px;
  margin-top: 10px;
}

#submit-text-answer {
  margin-top: 10px;
}

@media (max-width: 980px) {
  .quiz-builder,
  .quiz-live {
    grid-template-columns: 1fr;
  }

  .quiz-card--projector {
    min-height: calc(100vh - 280px);
  }

  .quiz-stage-head {
    flex-direction: column;
  }

  .quiz-options-grid,
  .quiz-podium {
    grid-template-columns: 1fr;
  }

  .quiz-settings-grid {
    grid-template-columns: 1fr;
  }
}