/* ── Shared UI components (board, panel, balls, join, overlays) ── */

/* ── Buttons ── */
.btn-primary,
#join-btn {
  background: linear-gradient(135deg, var(--col-N), var(--col-I));
  color: #fff;
  border: none;
  border-radius: 40px;
  font-size: 16px;
  font-weight: 800;
  letter-spacing: 2px;
  text-transform: uppercase;
  padding: 14px 22px;
  width: 100%;
  transition: transform 0.12s, box-shadow 0.12s, opacity 0.2s;
}
.btn-primary:active,
#join-btn:active { transform: translateY(1px); }
.btn-primary:disabled,
#join-btn:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }

.btn-ghost {
  background: var(--bg-primary);
  color: var(--color-muted);
  border: 1px solid var(--border-primary);
  border-radius: 40px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  padding: 12px 18px;
  width: 100%;
}
.btn-ghost:active { background: var(--bg-cell); }

/* ── Join Screen ── */
#join-screen {
  position: fixed;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 22px;
  padding: 24px;
  background: var(--bg-primary);
  z-index: 200;
}
#join-screen h1 {
  font-size: clamp(2.2rem, 12vw, 4rem);
  font-weight: 900;
  letter-spacing: 6px;
  text-transform: uppercase;
}
#join-screen h1.title-gradient,
#join-screen h1 { /* join titles use gradient */
  background: linear-gradient(135deg, var(--title-gradient-from), var(--title-gradient-to));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
#join-screen label,
#checker-screen label[for="code-input"] {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--color-muted);
  margin-bottom: 6px;
  display: block;
}

#join-screen p {
  color: var(--color-muted);
  letter-spacing: 1px;
  font-size: 15px;
}
#code-input {
  font-size: clamp(2rem, 10vw, 3rem);
  font-weight: 900;
  letter-spacing: 10px;
  text-align: center;
  text-transform: uppercase;
  background: var(--bg-cell);
  color: #fff;
  border: 2px solid var(--border-primary);
  border-radius: 12px;
  padding: 14px 10px;
  width: min(80vw, 280px);
  outline: none;
  transition: border-color 0.2s;
}
#code-input:focus { border-color: var(--col-N); }
#join-btn { width: min(80vw, 280px); }
#join-status {
  font-size: 14px;
  color: var(--text-subtle);
  min-height: 1.4em;
  text-align: center;
}
#join-status.error { color: var(--status-error); }

/* ════════════════════════════
   Bingo Board
════════════════════════════ */
#board-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5vh 1vw 1.5vh 1.5vw;
  background: var(--bg-primary);
}

#board {
  width: 100%;
  height: 100%;
  display: grid;
  grid-template-rows: repeat(16, 1fr);
  border-radius: 14px;
  overflow: hidden;
  border: 2px solid var(--border-primary);
  box-shadow: 0 8px 40px rgba(0,0,0,0.7);
}

.board-row {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  min-height: 0;
}

.col-header {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: clamp(1.2rem, 2.8vh, 3rem);
  font-weight: 900;
  letter-spacing: 2px;
}
.col-header.B { background: var(--col-B); }
.col-header.I { background: var(--col-I); }
.col-header.N { background: var(--col-N); }
.col-header.G { background: var(--col-G); }
.col-header.O { background: var(--col-O); }

.cell {
  background: var(--bg-cell);
  border: 1px solid var(--border-cell);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: clamp(0.85rem, 2.1vh, 2rem);
  font-weight: 700;
  color: var(--color-uncalled);
  position: relative;
  transition: background 0.2s, color 0.2s;
  cursor: default;
  min-height: 0;
}
.cell.called { color: #fff; }
.cell.called.B { background: var(--called-B); }
.cell.called.I { background: var(--called-I); }
.cell.called.N { background: var(--called-N); }
.cell.called.G { background: var(--called-G); }
.cell.called.O { background: var(--called-O); }
.cell.called::after {
  content: '';
  position: absolute;
  inset: 15%;
  border-radius: 50%;
  border: 2px solid rgba(255,255,255,0.25);
  pointer-events: none;
}
.cell.latest { animation: cellPulse 0.55s ease; }
@keyframes cellPulse {
  0%   { box-shadow: inset 0 0 0 0 rgba(255,255,255,0.7); }
  50%  { box-shadow: inset 0 0 0 8px rgba(255,255,255,0.25); }
  100% { box-shadow: inset 0 0 0 0 rgba(255,255,255,0); }
}

/* ════════════════════════════
   Control Panel
════════════════════════════ */
#panel {
  background: var(--bg-secondary);
  border-left: 2px solid var(--border-primary);
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 1.2vh 2vw;
  gap: 0;
  overflow: hidden;
}

#panel h1 {
  font-size: clamp(1.8rem, 4.5vh, 3.6rem);
  font-weight: 900;
  letter-spacing: 8px;
  text-transform: uppercase;
  background: linear-gradient(135deg, var(--title-gradient-from), var(--title-gradient-to));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  flex-shrink: 0;
  margin-bottom: 1vh;
}

/* Hero Ball */
#hero-wrap {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1vh;
}
#hero-ball {
  width: clamp(90px, 15vh, 160px);
  height: clamp(90px, 15vh, 160px);
  border-radius: 50%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  font-size: clamp(1.8rem, 5vh, 5rem);
  line-height: 1;
  box-shadow: 0 8px 40px rgba(0,0,0,0.7);
}
#hero-ball .ball-letter {
  font-size: clamp(0.7rem, 1.8vh, 1.5rem);
  opacity: 0.85;
  margin-bottom: 2px;
}
#hero-ball.B { background: radial-gradient(circle at 35% 30%, var(--ball-B-lt), var(--col-B)); }
#hero-ball.I { background: radial-gradient(circle at 35% 30%, var(--ball-I-lt), var(--col-I)); }
#hero-ball.N { background: radial-gradient(circle at 35% 30%, var(--ball-N-lt), var(--col-N)); }
#hero-ball.G { background: radial-gradient(circle at 35% 30%, var(--ball-G-lt), var(--col-G)); }
#hero-ball.O { background: radial-gradient(circle at 35% 30%, var(--ball-O-lt), var(--col-O)); }
#hero-ball.empty-hero {
  background: var(--bg-primary);
  border: 3px dashed var(--border-primary);
  font-size: clamp(1.1rem, 2.5vh, 2.2rem);
  color: var(--text-disabled);
  box-shadow: none;
}
#hero-ball.pop { animation: pop 0.4s cubic-bezier(.175,.885,.32,1.275); }
@keyframes pop {
  0%   { transform: scale(0.4); opacity: 0.3; }
  70%  { transform: scale(1.1); }
  100% { transform: scale(1); opacity: 1; }
}

.divider {
  width: 80%;
  height: 1px;
  background: var(--border-primary);
  flex-shrink: 0;
  margin-bottom: 1vh;
}

/* Last Called */
#last-called {
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.8vh;
  width: 100%;
  margin-bottom: 1vh;
}
.section-label {
  font-size: clamp(8px, 1.1vh, 12px);
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--text-subtle);
}
#recent-balls {
  display: flex;
  gap: 1vw;
  align-items: center;
  justify-content: center;
}

.ball {
  border-radius: 50%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  line-height: 1;
  box-shadow: 0 4px 12px rgba(0,0,0,0.5);
  flex-shrink: 0;
}
.ball .ball-letter { opacity: 0.85; margin-bottom: 1px; }
.ball.B { background: radial-gradient(circle at 35% 30%, var(--ball-B-lt), var(--col-B)); }
.ball.I { background: radial-gradient(circle at 35% 30%, var(--ball-I-lt), var(--col-I)); }
.ball.N { background: radial-gradient(circle at 35% 30%, var(--ball-N-lt), var(--col-N)); }
.ball.G { background: radial-gradient(circle at 35% 30%, var(--ball-G-lt), var(--col-G)); }
.ball.O { background: radial-gradient(circle at 35% 30%, var(--ball-O-lt), var(--col-O)); }
.ball.empty {
  background: var(--bg-primary);
  border: 1px solid var(--border-primary);
  box-shadow: none;
  opacity: 0.4;
}
.ball-slot-0 { width: clamp(38px,5.5vh,58px); height: clamp(38px,5.5vh,58px); font-size: clamp(10px,1.5vh,17px); }
.ball-slot-0 .ball-letter { font-size: clamp(6px,0.9vh,10px); }
.ball-slot-1 { width: clamp(48px,6.8vh,70px); height: clamp(48px,6.8vh,70px); font-size: clamp(13px,1.9vh,21px); }
.ball-slot-1 .ball-letter { font-size: clamp(7px,1vh,11px); }
.ball-slot-2 { width: clamp(60px,8.5vh,88px); height: clamp(60px,8.5vh,88px); font-size: clamp(16px,2.5vh,28px); }
.ball-slot-2 .ball-letter { font-size: clamp(8px,1.2vh,13px); }

#call-count {
  font-size: clamp(11px, 1.4vh, 16px);
  color: var(--color-muted);
  letter-spacing: 1px;
  margin-bottom: 1vh;
  flex-shrink: 0;
}

/* ── Voice Toggle ── */
#voice-toggle-wrap,
#auto-toggle-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: clamp(5px, 0.8vh, 9px) 14px;
  background: var(--bg-primary);
  border: 1px solid var(--border-primary);
  border-radius: 40px;
  cursor: pointer;
  user-select: none;
  transition: border-color 0.2s;
  flex-shrink: 0;
  font: inherit;
  color: inherit;
  width: auto;
  appearance: none;
  -webkit-appearance: none;
  text-align: inherit;
}
#voice-toggle-wrap:hover,
#auto-toggle-wrap:hover { border-color: var(--color-hover); }
#voice-toggle-wrap.voice-on { border-color: rgba(234,88,12,0.33); }

#voice-icon {
  font-size: clamp(11px, 1.5vh, 15px);
  line-height: 1;
}
#voice-label {
  font-size: clamp(9px, 1.2vh, 13px);
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--color-muted);
  transition: color 0.2s;
}
#voice-toggle-wrap.voice-on #voice-label { color: var(--ball-I-lt); }

.toggle-track {
  display: inline-block;
  width: 34px;
  height: 18px;
  background: var(--border-primary);
  border-radius: 9px;
  position: relative;
  transition: background 0.25s;
  flex-shrink: 0;
  vertical-align: middle;
}
#voice-toggle-wrap.voice-on .toggle-track { background: var(--col-N); }
.toggle-thumb {
  display: block;
  position: absolute;
  top: 2px;
  left: 2px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--color-thumb);
  transition: transform 0.25s, background 0.25s;
}
#voice-toggle-wrap.voice-on .toggle-thumb {
  transform: translateX(16px);
  background: #fff;
}

/* ── Pattern preview ── */
#game-type-wrap {
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.8vh;
  width: 100%;
  margin-bottom: 1vh;
}
#game-type-name {
  font-size: clamp(10px, 1.4vh, 15px);
  font-weight: 800;
  color: var(--text-secondary-ui);
  letter-spacing: 1px;
  text-transform: uppercase;
}
#pattern-preview {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5vh;
  width: 100%;
}
#pattern-desc {
  font-size: clamp(8px, 1vh, 11px);
  color: var(--text-hint);
  text-align: center;
  letter-spacing: 0.5px;
}

#mini-grid-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
}
.mini-col-headers {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 2px;
  width: 100%;
}
.mini-col-hdr {
  text-align: center;
  font-size: clamp(7px, 1vh, 11px);
  font-weight: 900;
  border-radius: 3px;
  padding: 2px 0;
}
.mini-col-hdr.B { background: var(--col-B); }
.mini-col-hdr.I { background: var(--col-I); }
.mini-col-hdr.N { background: var(--col-N); }
.mini-col-hdr.G { background: var(--col-G); }
.mini-col-hdr.O { background: var(--col-O); }

#mini-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  grid-template-rows: repeat(5, 1fr);
  gap: 2px;
}
.mini-cell {
  width: clamp(18px, 2.8vh, 30px);
  height: clamp(18px, 2.8vh, 30px);
  border-radius: 50%;
  background: var(--bg-disabled);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: clamp(5px, 0.75vh, 8px);
  font-weight: 700;
  color: var(--text-disabled);
  transition: background 0.3s, color 0.3s;
  position: relative;
}
.mini-cell.active { color: #fff; }
.mini-cell.active.B { background: radial-gradient(circle at 35% 30%, var(--ball-B-lt), var(--col-B)); }
.mini-cell.active.I { background: radial-gradient(circle at 35% 30%, var(--ball-I-lt), var(--col-I)); }
.mini-cell.active.N { background: radial-gradient(circle at 35% 30%, var(--ball-N-lt), var(--col-N)); }
.mini-cell.active.G { background: radial-gradient(circle at 35% 30%, var(--ball-G-lt), var(--col-G)); }
.mini-cell.active.O { background: radial-gradient(circle at 35% 30%, var(--ball-O-lt), var(--col-O)); }
.mini-cell.free-space {
  background: var(--border-primary);
  color: var(--color-free-space);
  font-size: clamp(4px, 0.6vh, 7px);
}
.mini-cell.free-space.active {
  background: radial-gradient(circle at 35% 30%, var(--ball-N-lt), var(--col-N));
  color: #fff;
}

/* ── Room info (viewer) ── */
#room-info {
  margin-top: auto;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  padding-top: 1vh;
}
#viewer-room-code {
  font-size: clamp(12px, 1.8vh, 18px);
  font-weight: 900;
  letter-spacing: 4px;
  color: #fff;
}
#viewer-status {
  font-size: clamp(7px, 0.9vh, 11px);
  color: var(--text-subtle);
}
#viewer-status.online { color: var(--status-success); }
#viewer-status.error  { color: var(--status-error); }

/* ── Full-screen call overlay ── */
#call-overlay {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,0.88);
  z-index: 1000;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.35s ease;
}
#call-overlay.visible { opacity: 1; pointer-events: auto; }
#overlay-ball {
  width: min(80vw, 80vh);
  height: min(80vw, 80vh);
  border-radius: 50%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  line-height: 1;
  box-shadow: 0 0 100px rgba(0,0,0,0.8);
  color: #fff;
  paint-order: stroke fill;
}
#overlay-ball .ball-letter {
  font-size: min(8vw, 8vh);
  opacity: 0.85;
  margin-bottom: 2px;
}
#overlay-ball .ball-number {
  font-size: min(46vw, 46vh);
  -webkit-text-stroke: 10px rgba(0,0,0,0.55);
  paint-order: stroke fill;
  line-height: 0.85;
}
#overlay-ball.B { background: radial-gradient(circle at 35% 30%, var(--ball-B-lt), var(--col-B)); }
#overlay-ball.I { background: radial-gradient(circle at 35% 30%, var(--ball-I-lt), var(--col-I)); }
#overlay-ball.N { background: radial-gradient(circle at 35% 30%, var(--ball-N-lt), var(--col-N)); }
#overlay-ball.G { background: radial-gradient(circle at 35% 30%, var(--ball-G-lt), var(--col-G)); }
#overlay-ball.O { background: radial-gradient(circle at 35% 30%, var(--ball-O-lt), var(--col-O)); }
@keyframes overlayPop {
  0%   { transform: scale(0.25); opacity: 0; }
  65%  { transform: scale(1.06); }
  100% { transform: scale(1); opacity: 1; }
}
#call-overlay.visible #overlay-ball {
  animation: overlayPop 0.5s cubic-bezier(.175,.885,.32,1.275) forwards;
}

/* ── Checker result overlay ── */
#result-overlay {
  position: fixed;
  inset: 0;
  z-index: 1100;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,0.93);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.35s ease;
}
#result-overlay.visible { opacity: 1; pointer-events: auto; cursor: pointer; }
.result-overlay-inner { text-align: center; padding: 4vh 4vw; }
#result-overlay-title {
  font-size: clamp(3rem, 17vh, 16rem);
  font-weight: 900;
  letter-spacing: 4px;
  text-transform: uppercase;
  line-height: 1;
}
#result-overlay-sub {
  font-size: clamp(1rem, 5.5vh, 5rem);
  font-weight: 800;
  letter-spacing: 3px;
  text-transform: uppercase;
  margin-top: 2.5vh;
  color: #fff;
}
.result-overlay-hint {
  font-size: clamp(10px, 1.6vh, 18px);
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text-muted-hint);
  margin-top: 4vh;
}

.btn-primary:focus-visible,
.btn-ghost:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

#called-wrap summary:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
  border-radius: 6px;
}

#kbd-help {
  font-size: clamp(8px, 1vh, 11px);
  color: var(--text-hint);
  text-align: left;
  line-height: 1.5;
  padding: 8px 10px;
  background: var(--bg-primary);
  border: 1px solid var(--border-primary);
  border-radius: 8px;
  width: 100%;
}
#kbd-help kbd {
  display: inline-block;
  min-width: 1.4em;
  text-align: center;
  padding: 1px 4px;
  border: 1px solid var(--border-primary);
  border-radius: 4px;
  font-family: inherit;
  font-size: 0.95em;
}
#kbd-help[hidden] { display: none !important; }
#result-overlay.win #result-overlay-title {
  color: var(--status-success);
  text-shadow: 0 0 60px rgba(34,197,94,0.55);
}
#result-overlay.no #result-overlay-title { color: var(--status-warning); }
#result-overlay.visible .result-overlay-inner {
  animation: overlayPop 0.5s cubic-bezier(.175,.885,.32,1.275);
}