/* Sự kiện trò chơi trực tiếp (kế hoạch L1): phòng chờ GV, màn hình máy chiếu, trang của HS. Chỉ dùng biến trong tokens.css. */
.live-card {
  max-width: 560px;
  margin: var(--space-6) auto;
  padding: var(--space-6);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  box-shadow: var(--shadow-soft);
  text-align: center;
}

.live-pin-input {
  width: 100%;
  font-family: var(--font-heading);
  font-size: var(--font-size-xl);
  font-weight: 800;
  letter-spacing: 0.4em;
  text-align: center;
}

.live-player__eyebrow {
  margin: 0;
  color: var(--color-text-muted);
  font-weight: 700;
}

.live-player__me {
  font-size: var(--font-size-lg);
  font-weight: 700;
}

.live-join {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-6);
  margin: var(--space-5) 0;
}

.live-join__label {
  color: var(--color-text-muted);
  font-weight: 700;
}

.live-pin {
  display: block;
  font-family: var(--font-heading);
  font-size: clamp(2.5rem, 8vw, 4rem);
  font-weight: 800;
  letter-spacing: 0.25em;
  color: var(--color-primary);
}

.live-join__qr {
  width: 200px;
  padding: var(--space-3);
  border-radius: var(--radius-md);
  background: #fff; /* mã QR luôn nền trắng để máy quét đọc được ở cả chế độ tối */
}

.live-join__qr svg {
  display: block;
  width: 100%;
  height: auto;
}

.live-count {
  font-size: var(--font-size-lg);
}

.live-players {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  justify-content: center;
  padding: 0;
  margin: var(--space-4) 0;
  list-style: none;
  max-height: 320px;
  overflow-y: auto;
}

.live-players li {
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-pill);
  background: var(--color-surface-muted);
  font-weight: 700;
}

.live-host .live-players {
  justify-content: flex-start;
}

.live-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  align-items: center;
  margin-top: var(--space-5);
}

.live-actions form {
  margin: 0;
}

/* Màn hình máy chiếu: bỏ đầu/chân trang, chữ rất to, nền kín màn hình. */
.live-screen-page .site-header,
.live-screen-page .site-footer {
  display: none;
}

.live-screen {
  text-align: center;
  padding: var(--space-6) var(--space-4);
}

.live-screen__title {
  font-size: clamp(1.75rem, 4vw, 3rem);
}

.live-screen__join {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: var(--space-7);
  margin: var(--space-6) 0;
}

.live-screen__hint {
  font-size: clamp(1.1rem, 2.5vw, 1.75rem);
}

.live-pin--xl {
  font-size: clamp(4rem, 14vw, 9rem);
}

.live-join__qr--xl {
  width: clamp(220px, 28vw, 360px);
}

.live-count--xl {
  font-size: clamp(1.25rem, 3vw, 2.25rem);
}

.live-players--xl {
  max-height: none;
  font-size: clamp(1.1rem, 2.4vw, 1.9rem);
}

.live-screen__closed {
  font-size: var(--font-size-xl);
}

/* Ván chơi trực tiếp (kế hoạch L2, L3) */
.live-game {
  margin-top: var(--space-5);
  text-align: left;
}

.live-me {
  margin: 0 0 var(--space-3);
  font-weight: 800;
  text-align: center;
}

.live-stage {
  display: grid;
  gap: var(--space-3);
  justify-items: center;
  text-align: center;
}

.live-round {
  margin: 0;
  color: var(--color-text-muted);
  font-weight: 700;
}

.live-clue {
  margin: 0;
  font-size: clamp(1.25rem, 3vw, 2rem);
}

.live-clock {
  margin: 0;
  font-family: var(--font-heading);
  font-size: var(--font-size-xl);
  font-weight: 800;
  color: var(--color-primary);
}

.live-answer {
  margin: 0;
  font-family: var(--font-heading);
  font-size: var(--font-size-xl);
  font-weight: 800;
  color: var(--color-correct);
}

.live-answer-form {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  justify-content: center;
  width: 100%;
}

.live-answer-input {
  flex: 1 1 200px;
  min-width: 0;
  min-height: var(--touch-target);
  padding: 0 var(--space-3);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  color: var(--color-text);
  font: inherit;
}

.live-feedback {
  min-height: 1.5em;
  margin: 0;
  font-weight: 700;
}

.live-keyword {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
  justify-content: center;
  margin: var(--space-2) 0;
}

.live-keyword__box {
  display: inline-grid;
  place-items: center;
  width: 2.25rem;
  height: 2.25rem;
  border: 2px solid var(--color-primary);
  border-radius: var(--radius-sm);
  background: var(--color-surface-muted);
  font-weight: 800;
}

.live-keyword__box.is-open {
  background: var(--color-primary);
  color: var(--color-on-primary);
}

.live-board__title {
  margin: var(--space-5) 0 var(--space-2);
  font-size: var(--font-size-lg);
}

.live-board {
  display: grid;
  gap: var(--space-2);
  padding: 0;
  margin: 0;
  list-style: none;
}

.live-board__row {
  display: grid;
  grid-template-columns: 2.5rem 1fr auto auto;
  gap: var(--space-3);
  align-items: center;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  background: var(--color-surface-muted);
}

.live-board__name {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-weight: 700;
}

.live-board__extra {
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
}

.live-board__points {
  font-family: var(--font-heading);
}

.live-podium__list {
  display: grid;
  gap: var(--space-2);
  padding: 0;
  list-style: none;
}

.live-podium__item {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  align-items: center;
  justify-content: center;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-lg);
  background: var(--color-surface-muted);
  font-size: var(--font-size-lg);
}

.live-podium__item--1 {
  border: 3px solid var(--color-correct);
  font-size: var(--font-size-xl);
}

.live-podium__medal {
  font-size: 2rem;
}

.live-message {
  min-height: 1.5em;
  color: var(--color-wrong);
  font-weight: 700;
}

.live-game--xl .live-clue {
  font-size: clamp(2rem, 5vw, 3.5rem);
}

.live-game--xl .live-clock,
.live-game--xl .live-answer {
  font-size: clamp(2rem, 5vw, 3.5rem);
}

.live-game--xl .live-keyword__box {
  width: clamp(2.5rem, 4vw, 4rem);
  height: clamp(2.5rem, 4vw, 4rem);
  font-size: clamp(1.25rem, 2.5vw, 2.25rem);
}

.live-board--xl {
  max-width: 900px;
  margin: var(--space-5) auto 0;
  font-size: clamp(1rem, 2vw, 1.6rem);
}