.ttt-page {
  width: min(680px, calc(100% - 3rem));
  margin: 0 auto;
  padding: 3rem 0 clamp(6rem, 12vw, 9rem);
}

.ttt-confetti {
  position: fixed;
  inset: 0;
  z-index: 1000;
  overflow: hidden;
  pointer-events: none;
}

.ttt-confetti-piece {
  position: absolute;
  top: -1.5rem;
  left: var(--confetti-x);
  width: 0.55rem;
  height: 0.95rem;
  border-radius: 0.12rem;
  background: var(--confetti-color);
  opacity: 0;
  animation: ttt-confetti-fall var(--confetti-duration) var(--confetti-delay) ease-in forwards;
}

@keyframes ttt-confetti-fall {
  0% {
    opacity: 0;
    transform: translate3d(0, -5vh, 0) rotate(0deg);
  }

  10% {
    opacity: 1;
  }

  85% {
    opacity: 1;
  }

  100% {
    opacity: 0;
    transform: translate3d(var(--confetti-drift), 110vh, 0) rotate(var(--confetti-rotation));
  }
}

.ttt-header {
  padding: clamp(4rem, 10vw, 6.5rem) 0 2.75rem;
  text-align: center;
}

.ttt-header h1 {
  margin: 0;
  font-size: clamp(3.2rem, 10vw, 6rem);
  font-weight: 900;
  letter-spacing: -0.075em;
  line-height: 0.94;
}

.ttt-header > p:last-child {
  max-width: 520px;
  margin: 1.35rem auto 0;
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.65;
}

.ttt-game {
  width: min(100%, 500px);
  margin: 0 auto;
  padding: clamp(1.25rem, 4vw, 2rem);
  border: 1px solid var(--line);
  border-radius: 2rem;
  background: #fff;
  box-shadow: 0 14px 40px rgba(23, 23, 23, 0.08);
}

.ttt-mode-picker {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
  padding: 0.35rem;
  border-radius: 1rem;
  background: #f0efeb;
}

.ttt-mode-button {
  min-height: 2.9rem;
  border: 0;
  border-radius: 0.75rem;
  background: transparent;
  color: var(--muted);
  font: inherit;
  font-weight: 800;
  cursor: pointer;
}

.ttt-mode-button.is-active {
  background: #fff;
  color: var(--text);
  box-shadow: 0 2px 8px rgba(23, 23, 23, 0.08);
}

.ttt-online-panel {
  margin-bottom: 1.25rem;
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: 1rem;
  background: #f7f7f5;
}

.ttt-online-panel[hidden] {
  display: none;
}

.ttt-connection-status {
  margin: 0 0 0.9rem;
  font-weight: 800;
}

.ttt-invite-label {
  display: block;
  margin-bottom: 0.35rem;
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.ttt-invite-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 0.5rem;
}

.ttt-invite-row input {
  min-width: 0;
  min-height: 2.9rem;
  padding: 0 0.8rem;
  border: 1px solid #d8d7d2;
  border-radius: 0.75rem;
  background: #fff;
  color: var(--text);
  font: inherit;
  font-size: 0.85rem;
}

.ttt-invite-row button,
.ttt-new-room {
  min-height: 2.9rem;
  border: 0;
  border-radius: 0.75rem;
  background: #171717;
  color: #fff;
  font: inherit;
  font-weight: 800;
  cursor: pointer;
}

.ttt-invite-row button {
  padding: 0 1rem;
}

.ttt-new-room {
  width: 100%;
  margin-top: 0.6rem;
  background: #deddd8;
  color: var(--text);
}

.ttt-online-note {
  margin: 0.7rem 0 0;
  color: var(--muted);
  font-size: 0.85rem;
}

.ttt-status {
  margin: 0 0 1.25rem;
  font-size: 1.1rem;
  font-weight: 800;
  text-align: center;
}

.ttt-board {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.6rem;
}

.ttt-cell {
  display: grid;
  aspect-ratio: 1;
  place-items: center;
  border: 2px solid #deded9;
  border-radius: 1rem;
  background: #f7f7f5;
  color: var(--text);
  font: inherit;
  font-size: clamp(2.8rem, 12vw, 4.5rem);
  font-weight: 900;
  line-height: 1;
  cursor: pointer;
  transition: transform 120ms ease, background-color 120ms ease;
}

.ttt-cell:hover:not(:disabled) {
  transform: translateY(-2px);
  background: #efeee9;
}

.ttt-cell:focus-visible,
.ttt-mode-button:focus-visible,
.ttt-invite-row button:focus-visible,
.ttt-new-room:focus-visible,
.ttt-reset:focus-visible,
.ttt-invite-row input:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 4px;
}

.ttt-cell:disabled {
  cursor: default;
  opacity: 1;
}

.ttt-cell.cell-x {
  color: #e34732;
}

.ttt-cell.cell-o {
  color: #4c77c6;
}

.ttt-cell.cell-win {
  background: #f4cf4f;
  color: #171717;
}

.ttt-reset {
  display: block;
  width: 100%;
  min-height: 3.4rem;
  margin-top: 1rem;
  border: 0;
  border-radius: 1rem;
  background: #171717;
  color: #fff;
  font: inherit;
  font-weight: 800;
  cursor: pointer;
}

.ttt-reset:hover,
.ttt-invite-row button:hover {
  background: #343434;
}

.ttt-new-room:hover {
  background: #d1d0ca;
}

@media (max-width: 560px) {
  .ttt-page {
    width: calc(100% - 2rem);
    padding-top: 2rem;
  }

  .ttt-header {
    padding-top: 3.5rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .ttt-confetti-piece {
    display: none;
  }

  .ttt-cell {
    transition: none;
  }
}