:root {
  color-scheme: dark;
  --ink: #e9fff7;
  --muted: #8aa5a4;
  --panel: rgba(8, 25, 35, 0.92);
  --line: rgba(111, 255, 205, 0.18);
  --green: #64ffb4;
  --green-dark: #16b978;
  --red: #ff526e;
  --blue: #59b8ff;
}

* { box-sizing: border-box; }

html, body { min-height: 100%; }

body {
  margin: 0;
  min-height: 100dvh;
  overflow: hidden;
  color: var(--ink);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  background:
    radial-gradient(circle at 20% 10%, rgba(25, 160, 123, 0.16), transparent 34rem),
    radial-gradient(circle at 90% 90%, rgba(50, 115, 175, 0.12), transparent 28rem),
    #050d14;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.24;
  background-image: linear-gradient(rgba(255,255,255,.025) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px);
  background-size: 32px 32px;
}

button, input { font: inherit; }

.app {
  position: relative;
  width: min(100%, 980px);
  height: 100dvh;
  margin: auto;
  padding: clamp(14px, 2.5vh, 28px) clamp(14px, 3vw, 32px);
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto;
  gap: clamp(10px, 2vh, 20px);
}

.topbar, footer { display: flex; align-items: flex-end; justify-content: space-between; }

.eyebrow {
  margin: 0 0 5px;
  color: var(--green);
  font-size: 10px;
  letter-spacing: .22em;
  text-transform: uppercase;
}

h1, h2, p { margin-top: 0; }
h1 { margin-bottom: 0; font-size: clamp(22px, 4vw, 38px); letter-spacing: -.07em; line-height: .9; }
h2 { margin-bottom: 12px; font-size: clamp(28px, 5vw, 54px); letter-spacing: -.055em; line-height: .95; }

.scoreboard { display: flex; gap: clamp(18px, 4vw, 42px); }
.scoreboard div { display: grid; gap: 3px; text-align: right; }
.scoreboard span { color: var(--muted); font-size: 10px; letter-spacing: .16em; text-transform: uppercase; }
.scoreboard strong { font-size: clamp(18px, 3vw, 28px); font-weight: 500; }
.scoreboard .is-counter-updated {
  display: inline-block;
  animation: online-counter-pulse .9s ease-out;
}

@keyframes online-counter-pulse {
  0% {
    color: var(--green);
    text-shadow: 0 0 0 rgba(100,255,180,0);
    transform: translateZ(0) scale(1);
  }
  35% {
    color: #e9fff7;
    text-shadow: 0 0 10px rgba(100,255,180,.82), 0 0 22px rgba(100,255,180,.32);
    transform: translateZ(0) scale(1.08);
  }
  100% {
    text-shadow: 0 0 0 rgba(100,255,180,0);
    transform: translateZ(0) scale(1);
  }
}

.game-shell {
  position: relative;
  min-height: 0;
  display: grid;
  place-items: center;
}
.game-shell.is-playing { touch-action: none; }

#gameCanvas {
  display: block;
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
  border: 1px solid rgba(100, 255, 180, .36);
  border-radius: 8px;
  background: #081923;
  box-shadow: 0 0 0 1px rgba(0,0,0,.5), 0 0 14px rgba(100,255,180,.05), 0 24px 80px rgba(0,0,0,.46), inset 0 0 60px rgba(20,130,100,.06);
}

.game-shell:not(.wrap) #gameCanvas { animation: canvas-wall-energy 2.8s ease-in-out infinite; }
.game-shell.wrap #gameCanvas { border-color: transparent; animation: none; }

@keyframes canvas-wall-energy {
  0%, 100% {
    border-color: rgba(100, 255, 180, .28);
    box-shadow: 0 0 0 1px rgba(0,0,0,.5), 0 0 12px rgba(100,255,180,.05), 0 0 26px rgba(20,210,130,.035), 0 24px 80px rgba(0,0,0,.46), inset 0 0 60px rgba(20,130,100,.06);
  }
  50% {
    border-color: rgba(100, 255, 180, .48);
    box-shadow: 0 0 0 1px rgba(100,255,180,.08), 0 0 18px rgba(100,255,180,.14), 0 0 34px rgba(20,210,130,.08), 0 24px 80px rgba(0,0,0,.46), inset 0 0 60px rgba(20,130,100,.08);
  }
}

.overlay {
  position: absolute;
  inset: 0;
  z-index: 3;
  display: grid;
  place-items: center;
  padding: 18px;
  border-radius: 8px;
  background: rgba(4, 13, 20, .74);
  backdrop-filter: blur(8px);
  transition: opacity .18s ease;
}

.overlay.is-hidden { opacity: 0; pointer-events: none; }

.countdown-display {
  position: absolute;
  inset: 0;
  z-index: 1;
  display: grid;
  place-items: center;
  pointer-events: none;
  color: var(--green);
  font-size: clamp(110px, 24vw, 210px);
  font-weight: 800;
  line-height: 1;
  text-shadow: 0 0 12px #07131d, 0 0 28px #07131d, 0 0 50px rgba(100,255,180,.5);
}

.pause-display {
  position: absolute;
  left: 50%;
  top: 50%;
  z-index: 1;
  padding: 11px 16px;
  border: 1px solid rgba(200,137,255,.32);
  border-radius: 999px;
  color: #d9b5ff;
  background: rgba(15,9,25,.72);
  font-size: clamp(12px, 2vw, 16px);
  font-weight: 800;
  letter-spacing: .12em;
  text-transform: uppercase;
  transform: translate(-50%, -50%);
  pointer-events: none;
  text-shadow: 0 0 18px rgba(7,19,29,.9);
  backdrop-filter: blur(5px);
}

.connection-quality-warning {
  position: absolute;
  left: 50%;
  top: 14px;
  z-index: 2;
  padding: 7px 11px;
  border: 1px solid rgba(255,202,92,.3);
  border-radius: 999px;
  color: #ffdf98;
  background: rgba(28,19,5,.74);
  font-size: 10px;
  letter-spacing: .08em;
  text-transform: uppercase;
  transform: translateX(-50%);
  pointer-events: none;
  box-shadow: 0 10px 30px rgba(0,0,0,.25);
  backdrop-filter: blur(5px);
}

.spectator-badge {
  align-self: center;
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 7px 10px;
  border: 1px solid rgba(200,137,255,.32);
  border-radius: 20px;
  color: #d9b5ff;
  background: rgba(15,9,25,.82);
  font-size: 9px;
  letter-spacing: .08em;
  text-transform: uppercase;
  backdrop-filter: blur(5px);
}
.spectator-badge strong { font-weight: 700; }
.spectator-badge span { color: var(--muted); }

.overlay-card {
  position: relative;
  display: flex;
  flex-direction: column;
  width: min(560px, 94%);
  max-height: 100%;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: 0 24px 70px rgba(0,0,0,.45);
}
.overlay-card-scroll {
  flex: 1 1 auto;
  min-height: 0;
  overflow: auto;
  padding: clamp(20px, 4vw, 38px);
}
.overlay-card.has-scroll-overflow:not(.is-scrolled-end)::after {
  content: "";
  position: absolute;
  right: 1px;
  bottom: 0;
  left: 1px;
  height: 56px;
  border-radius: 0 0 8px 8px;
  pointer-events: none;
  background: linear-gradient(to bottom, rgba(8,25,35,0), rgba(8,25,35,.18) 45%, rgba(8,25,35,.54));
  backdrop-filter: blur(2px);
  -webkit-backdrop-filter: blur(2px);
  mask-image: linear-gradient(to bottom, transparent, rgba(0,0,0,.45) 48%, #000);
  -webkit-mask-image: linear-gradient(to bottom, transparent, rgba(0,0,0,.45) 48%, #000);
}

#overlayText { margin-bottom: 22px; color: var(--muted); font-size: 13px; }
.text-link {
  padding: 0;
  border: 0;
  color: var(--green);
  background: transparent;
  cursor: pointer;
  font: inherit;
  text-decoration: underline;
  text-underline-offset: 3px;
}
.text-link:hover { color: #91ffcf; }
.controls { display: grid; gap: 14px; margin-bottom: 22px; }
#guestPracticeSettings { margin-bottom: 0; }
.settings-tabs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 7px;
}
.settings-tabs button {
  min-height: 38px;
  border: 1px solid rgba(255,255,255,.08);
  border-radius: 5px;
  color: var(--muted);
  background: rgba(2,12,17,.3);
  cursor: pointer;
  font-weight: 800;
  font-size: 10px;
  letter-spacing: .12em;
  text-transform: uppercase;
}
.settings-tabs button[aria-selected="true"] {
  border-color: rgba(100,255,180,.5);
  color: var(--ink);
  background: rgba(100,255,180,.08);
}
.settings-tabs button:focus-visible { outline: 2px solid var(--green); outline-offset: 2px; }

.mode-control {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin: 0;
  padding: 0;
  border: 0;
}
.mode-control legend { margin-bottom: 8px; color: var(--muted); font-size: 10px; letter-spacing: .14em; text-transform: uppercase; }
.mode-control label { position: relative; cursor: pointer; }
.mode-control input { position: absolute; opacity: 0; }
.mode-control span {
  display: grid;
  gap: 4px;
  min-height: 62px;
  padding: 10px;
  border: 1px solid rgba(255,255,255,.08);
  border-radius: 5px;
  color: var(--muted);
  background: rgba(2,12,17,.3);
}
.mode-control strong { color: var(--ink); font-size: 11px; text-transform: uppercase; letter-spacing: .08em; }
.mode-control small { font-size: 9px; line-height: 1.35; }
.mode-control input:checked + span { border-color: rgba(100,255,180,.5); background: rgba(100,255,180,.08); }
.mode-control input:focus-visible + span { outline: 2px solid var(--green); outline-offset: 2px; }

.join-form { display: grid; gap: 9px; }
.join-form > label, .section-label {
  margin: 0;
  color: var(--muted);
  font-size: 10px;
  letter-spacing: .14em;
  text-transform: uppercase;
}
.join-row { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 8px; }
.join-row input {
  min-width: 0;
  min-height: 48px;
  padding: 0 14px;
  border: 1px solid rgba(255,255,255,.14);
  border-radius: 5px;
  outline: none;
  color: var(--ink);
  background: rgba(2, 12, 17, .8);
}
.join-row input:focus { border-color: var(--green); box-shadow: 0 0 0 3px rgba(100,255,180,.1); }
.join-row .primary-button { width: auto; padding-inline: 22px; }
.form-error { min-height: 15px; margin: 0; color: var(--red); font-size: 11px; }
.secondary-button {
  min-height: 42px;
  border: 1px solid rgba(200,137,255,.34);
  border-radius: 5px;
  color: #d9b5ff;
  background: rgba(141,71,199,.1);
  cursor: pointer;
  font-weight: 700;
  letter-spacing: .07em;
  text-transform: uppercase;
}
.secondary-button:hover { border-color: #c889ff; background: rgba(141,71,199,.2); }
.danger-button {
  border-color: rgba(255,82,110,.34);
  color: #ff9bac;
  background: rgba(255,82,110,.08);
}
.danger-button:hover { border-color: var(--red); background: rgba(255,82,110,.16); }

.pause-controls {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 9px;
}

.lobby-panel { display: grid; gap: 16px; }
.lan-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-width: 0;
  padding: 9px 11px;
  border: 1px solid rgba(89,184,255,.18);
  border-radius: 5px;
  color: var(--muted);
  background: rgba(35,100,150,.08);
  font-size: 9px;
  letter-spacing: .1em;
  text-decoration: none;
  text-transform: uppercase;
}
.lan-link strong { overflow: hidden; color: var(--blue); font-size: 10px; font-weight: 500; text-overflow: ellipsis; text-transform: none; white-space: nowrap; }
.lan-link:hover { border-color: rgba(89,184,255,.45); }

.qr-dialog,
.leaderboard-dialog {
  width: min(390px, calc(100% - 32px));
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--ink);
  background: #081923;
  box-shadow: 0 24px 90px rgba(0,0,0,.75);
}
.qr-dialog::backdrop,
.leaderboard-dialog::backdrop { background: rgba(2,8,12,.82); backdrop-filter: blur(7px); }
.qr-dialog form,
.leaderboard-dialog form { position: relative; display: grid; justify-items: center; gap: 14px; padding: 30px; }
.qr-dialog h2,
.leaderboard-dialog h2 { margin: 0; font-size: 34px; }
.qr-dialog img { display: block; width: min(260px, 80vw); padding: 8px; border-radius: 7px; background: var(--ink); }
.qr-dialog a { color: var(--blue); font-size: 12px; text-decoration: none; }
.leaderboard-list {
  display: grid;
  gap: 8px;
  width: 100%;
  margin: 2px 0 0;
  padding: 0;
  list-style: none;
}
.leaderboard-list li {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 12px;
  min-height: 46px;
  padding: 9px 12px;
  border: 1px solid rgba(255,255,255,.08);
  border-radius: 5px;
  background: rgba(2,12,17,.42);
}
.leaderboard-rank { color: var(--green); font-size: 11px; }
.leaderboard-name { overflow: hidden; font-size: 13px; font-weight: 700; text-overflow: ellipsis; white-space: nowrap; }
.leaderboard-wins { color: var(--muted); font-size: 10px; letter-spacing: .1em; text-transform: uppercase; }
.leaderboard-empty { margin: 0; color: var(--muted); font-size: 12px; text-align: center; }
.leaderboard-dialog .secondary-button { width: 100%; }
.dialog-close {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 32px;
  height: 32px;
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 50%;
  color: var(--muted);
  background: transparent;
  cursor: pointer;
}
.dialog-close:hover { color: var(--ink); border-color: rgba(255,255,255,.35); }
.player-slots { display: grid; gap: 7px; margin: 0; padding: 0; list-style: none; }
.player-slot {
  display: grid;
  grid-template-columns: auto 1fr 28px;
  align-items: center;
  gap: 11px;
  min-height: 48px;
  padding: 8px 12px;
  border: 1px solid rgba(255,255,255,.08);
  border-radius: 5px;
  color: #647d80;
  background: rgba(2, 12, 17, .34);
}
.player-slot.is-connected { color: var(--ink); border-color: rgba(100,255,180,.16); }
.player-slot.is-waiting { color: var(--ink); border-color: rgba(255,202,92,.22); }
.player-marker { width: 14px; height: 14px; border-radius: 4px; opacity: .35; }
.is-connected .player-marker { opacity: 1; box-shadow: 0 0 12px currentColor; }
.is-waiting .player-marker { opacity: .85; box-shadow: 0 0 10px rgba(255,202,92,.45); }
.player-details { display: grid; gap: 2px; }
.player-details strong { overflow: hidden; font-size: 12px; font-weight: 600; text-overflow: ellipsis; white-space: nowrap; }
.player-details small { color: var(--muted); font-size: 9px; text-transform: uppercase; letter-spacing: .1em; }
.status-dot { justify-self: center; width: 7px; height: 7px; border-radius: 50%; background: #35494c; }
.is-connected .status-dot { background: var(--green); box-shadow: 0 0 8px var(--green); }
.is-waiting .status-dot { background: #ffca5c; box-shadow: 0 0 8px #ffca5c; }
.remove-player {
  justify-self: center;
  min-width: 28px;
  min-height: 28px;
  padding: 0;
  border: 1px solid rgba(255,82,110,.2);
  border-radius: 50%;
  color: #bb7180;
  background: transparent;
  cursor: pointer;
  line-height: 1;
}
.remove-player:hover { color: var(--red); border-color: var(--red); background: rgba(255,82,110,.08); }
.lobby-hint { margin: -6px 0 0; color: var(--muted); font-size: 10px; text-align: center; }
.range-control { display: grid; gap: 8px; color: var(--muted); font-size: 12px; }
.range-control > span { display: flex; justify-content: space-between; }
output { color: var(--ink); }
input[type="range"] { width: 100%; accent-color: var(--green); cursor: pointer; }

.toggle-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.toggle-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 42px;
  padding: 8px 10px;
  border: 1px solid rgba(255,255,255,.08);
  border-radius: 5px;
  color: var(--muted);
  font-size: 11px;
  cursor: pointer;
}
.toggle-row input { position: absolute; opacity: 0; }
.toggle-row i { position: relative; width: 30px; height: 16px; border-radius: 10px; background: #263b43; transition: .18s ease; }
.toggle-row i::after { content: ""; position: absolute; top: 3px; left: 3px; width: 10px; height: 10px; border-radius: 50%; background: #789093; transition: .18s ease; }
.toggle-row input:checked + i { background: rgba(100,255,180,.3); }
.toggle-row input:checked + i::after { transform: translateX(14px); background: var(--green); }
.is-hidden { display: none !important; }

.primary-button {
  width: 100%;
  min-height: 48px;
  border: 0;
  border-radius: 5px;
  color: #04110c;
  background: var(--green);
  font-weight: 800;
  letter-spacing: .08em;
  text-transform: uppercase;
  cursor: pointer;
}
.primary-button:hover { background: #91ffcf; }
.primary-button:disabled { color: #6f8984; background: #1c3334; cursor: not-allowed; }
.idle-popup {
  position: absolute;
  left: 50%;
  top: 50%;
  z-index: 5;
  width: min(360px, calc(100% - 42px));
  padding: 16px 18px;
  border: 1px solid rgba(255,82,110,.32);
  border-radius: 8px;
  color: #ffced6;
  background: rgba(18,7,13,.92);
  box-shadow: 0 20px 60px rgba(0,0,0,.48), 0 0 30px rgba(255,82,110,.08);
  font-size: 12px;
  letter-spacing: .04em;
  line-height: 1.45;
  text-align: center;
  transform: translate(-50%, -50%);
  backdrop-filter: blur(7px);
}
.idle-popup p { margin: 0; }

.board-actions { position: absolute; right: 12px; bottom: 12px; display: flex; gap: 7px; z-index: 5; pointer-events: auto; }
.game-shell:has(.overlay:not(.is-hidden)) .board-actions .icon-button { display: none !important; }
.connection-badge {
  align-self: center;
  display: inline-flex;
  align-items: center;
  min-height: 31px;
  padding: 7px 10px;
  border: 1px solid rgba(255,255,255,.1);
  border-radius: 20px;
  color: #7b8e91;
  background: rgba(5,18,25,.75);
  font-size: 9px;
  letter-spacing: .1em;
  text-transform: uppercase;
  white-space: nowrap;
  backdrop-filter: blur(5px);
}
.connection-badge::before { content: ""; display: inline-block; width: 6px; height: 6px; margin-right: 6px; border-radius: 50%; background: #6d4a4f; }
.connection-badge.is-online { color: var(--ink); border-color: rgba(100,255,180,.24); }
.connection-badge.is-online::before { background: var(--green); box-shadow: 0 0 7px var(--green); }
.connection-badge.is-auto-join-off { color: #ffb5c0; border-color: rgba(255,82,110,.36); }
.connection-badge.is-auto-join-off::before { background: var(--red); box-shadow: 0 0 7px rgba(255,82,110,.65); }
.connection-badge.is-toggleable { cursor: pointer; }
.connection-badge.is-toggleable:hover { border-color: rgba(100,255,180,.38); }
.connection-badge.is-toggleable:focus-visible { outline: 2px solid var(--green); outline-offset: 2px; }
.connection-badge.is-auto-join-off.is-toggleable:hover { border-color: rgba(255,82,110,.52); }
.connection-badge.is-auto-join-off.is-toggleable:focus-visible { outline-color: var(--red); }
.icon-button {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  padding: 10px;
  border: 1px solid rgba(255,255,255,.15);
  border-radius: 50%;
  color: var(--ink);
  background: rgba(5,18,25,.75);
  cursor: pointer;
  backdrop-filter: blur(5px);
}
.icon-button img { width: 100%; height: 100%; object-fit: contain; }
.icon-button.is-muted { opacity: .42; }
.icon-button:disabled { opacity: .25; cursor: default; }

.audio-menu {
  position: absolute;
  right: 12px;
  bottom: 58px;
  z-index: 4;
  display: grid;
  gap: 10px;
  width: min(290px, calc(100% - 24px));
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--ink);
  background: rgba(8,25,35,.96);
  box-shadow: 0 18px 60px rgba(0,0,0,.42);
  backdrop-filter: blur(8px);
}
.audio-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  color: var(--muted);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: .1em;
}
.audio-toggle input { width: 18px; height: 18px; accent-color: var(--green); }
.audio-choice {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 7px;
  margin: 0;
  padding: 0;
  border: 0;
}
.audio-choice legend { grid-column: 1 / -1; margin-bottom: 8px; color: var(--muted); font-size: 10px; letter-spacing: .14em; text-transform: uppercase; }
.audio-choice label { position: relative; cursor: pointer; }
.audio-choice input { position: absolute; opacity: 0; }
.audio-choice span {
  display: block;
  padding: 9px 10px;
  border: 1px solid rgba(255,255,255,.08);
  border-radius: 5px;
  color: var(--muted);
  background: rgba(2,12,17,.3);
  font-size: 10px;
  text-align: center;
  text-transform: uppercase;
  letter-spacing: .1em;
}
.audio-choice input:checked + span { border-color: rgba(100,255,180,.5); color: var(--ink); background: rgba(100,255,180,.08); }
.audio-choice input:focus-visible + span { outline: 2px solid var(--green); outline-offset: 2px; }
.audio-range, .audio-select { display: grid; gap: 6px; color: var(--muted); font-size: 11px; }
.audio-range > span, .audio-select > span { display: flex; justify-content: space-between; }
.audio-choice.is-disabled, .audio-range.is-disabled, .audio-select.is-disabled { opacity: .46; }
.audio-choice.is-disabled label, .audio-range.is-disabled input, .audio-select.is-disabled select { cursor: default; }
.audio-select select {
  appearance: none;
  -webkit-appearance: none;
  width: 100%;
  height: 36px;
  min-height: 36px;
  padding: 0 32px 0 10px;
  border: 1px solid rgba(255,255,255,.14);
  border-radius: 5px;
  color: var(--ink);
  background-color: rgba(2,12,17,.9);
  background-image: url("data:image/svg+xml,%3Csvg width='14' height='14' viewBox='0 0 14 14' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M3 5.25 7 9l4-3.75' fill='none' stroke='%23c8fce2' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
  background-size: 14px 14px;
  line-height: 36px;
}

footer { gap: 12px; color: #577174; font-size: 9px; letter-spacing: .12em; text-transform: uppercase; }
#identity { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.footer-instructions { flex-shrink: 0; }
.footer-instructions-mobile { display: none; }

@media (hover: none), (max-width: 620px) {
  .overlay { padding: 14px 14px 58px; }
  .overlay-card { max-height: calc(100% - 12px); }
  .overlay-card-scroll { padding: 20px; }
  .board-actions { right: 50%; transform: translateX(50%); }
  .topbar { align-items: center; }
  footer { align-items: center; font-size: 8px; line-height: 1.35; }
  .footer-instructions-desktop { display: none; }
  .footer-instructions-mobile { display: inline; text-align: right; }
  .join-row { grid-template-columns: 1fr; }
  .join-row .primary-button { width: 100%; }
  .mode-control { grid-template-columns: 1fr; }
  .pause-controls { grid-template-columns: 1fr; }
}

@media (max-height: 650px) {
  .app { padding-block: 10px; gap: 8px; }
  footer { font-size: 8px; }
  .overlay-card { max-height: calc(100% - 12px); }
  .overlay-card-scroll { padding: 16px 20px; }
  h2 { font-size: 28px; margin-bottom: 8px; }
  #overlayText { margin-bottom: 12px; }
  .controls { gap: 9px; margin-bottom: 12px; }
  .player-slot { min-height: 42px; }
}

@media (prefers-reduced-motion: reduce) { * { transition: none !important; } }