/* ═══════════════════════════════════════════════
   RESET & BASE
════════════════════════════════════════════════ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
  user-select: none;
}

:root {
  --clr-bg:          #1a1a2e;
  --clr-surface:     #16213e;
  --clr-border:      #0f3460;
  --clr-accent:      #e94560;
  --clr-accent2:     #f5a623;
  --clr-text:        #eaeaea;
  --clr-text-muted:  #7a8899;

  --clr-p1:          #4fc3f7;   /* Player 1 — blue */
  --clr-p2:          #ef9a9a;   /* Player 2 — red  */

  --clr-die-bg:      #ffffff;
  --clr-die-dot:     #1a1a2e;

  --radius-cell:     12px;
  --radius-board:    16px;

  --cell-size:       clamp(72px, 14vw, 120px);
  --gap:             clamp(6px, 1.5vw, 14px);
}

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: var(--clr-bg);
  color: var(--clr-text);
  font-family: 'Segoe UI', system-ui, sans-serif;
}

/* ═══════════════════════════════════════════════
   LAYOUT — three rows stacked vertically
════════════════════════════════════════════════ */
body {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  height: 100dvh;
  padding: clamp(8px, 2vw, 20px);
  gap: clamp(4px, 1vw, 12px);
}

/* ═══════════════════════════════════════════════
   PLAYER ZONES
════════════════════════════════════════════════ */
.player-zone {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--gap);
  width: 100%;
  flex: 1;
  justify-content: center;
  position: relative;
}

/* Player 2 zone is rotated 180° for face-to-face play */
.player-zone--top {
  transform: rotate(180deg);
}

/* ═══════════════════════════════════════════════
   PLAYER HEADER (name + total score)
════════════════════════════════════════════════ */
.player-header {
  display: flex;
  align-items: center;
  justify-content: center;
  width: calc(3 * var(--cell-size) + 2 * var(--gap));
  padding: 4px 10px;
}

.player-label {
  font-size: clamp(14px, 2.5vw, 22px);
  font-weight: 700;
  letter-spacing: 0.05em;
}

#zone-player1 .player-label { color: var(--clr-p1); }
#zone-player2 .player-label { color: var(--clr-p2); }

.player-score {
  font-size: clamp(22px, 4vw, 40px);
  font-weight: 900;
  line-height: 1;
  color: var(--clr-text);
}

/* ═══════════════════════════════════════════════
   BOARD & COLUMNS
════════════════════════════════════════════════ */
.board-wrapper {
  display: flex;
  flex-direction: row;
  align-items: stretch;
  gap: var(--gap);
}

.board {
  display: flex;
  gap: var(--gap);
}

/* ── Side total panel ── */
.side-total {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px clamp(8px, 1.5vw, 16px);
  background: var(--clr-surface);
  border: 2px solid var(--clr-border);
  border-radius: var(--radius-board);
  min-width: clamp(48px, 7vw, 72px);
}

.side-label {
  font-size: clamp(9px, 1.3vw, 12px);
  font-weight: 700;
  color: var(--clr-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.side-value {
  font-size: clamp(22px, 4.5vw, 48px);
  font-weight: 900;
  line-height: 1;
}

#zone-player1 .side-value { color: var(--clr-p1); }
#zone-player2 .side-value { color: var(--clr-p2); }

.column {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: calc(var(--gap) * 0.6);
  width: var(--cell-size);
  border: 2px solid var(--clr-border);
  border-radius: var(--radius-board);
  padding: calc(var(--gap) * 0.5);
  background: var(--clr-surface);
  transition: border-color 0.2s, background 0.2s;
}

/* Highlight clickable columns on player 1's turn */
.column.clickable {
  border-color: var(--clr-p1);
  cursor: pointer;
}

@media (hover: hover) {
  .column.clickable:hover {
    background: rgba(79, 195, 247, 0.08);
    border-color: var(--clr-accent2);
  }
}

.column.clickable:active {
  background: rgba(79, 195, 247, 0.08);
  border-color: var(--clr-accent2);
}

/* Clickable for player 2 */
.player-zone--top .column.clickable {
  border-color: var(--clr-p2);
}

.column.full {
  opacity: 0.5;
  pointer-events: none;
}

/* ═══════════════════════════════════════════════
   CELLS
════════════════════════════════════════════════ */
.cell {
  width: var(--cell-size);
  height: var(--cell-size);
  border-radius: var(--radius-cell);
  background: var(--clr-bg);
  border: 2px solid var(--clr-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: clamp(22px, 5vw, 44px);
  font-weight: 900;
  transition: background 0.15s, transform 0.15s;
  position: relative;
}

.cell.filled {
  background: var(--clr-surface);
  border-color: transparent;
}

/* Die face visual inside a cell */
.cell .die-face {
  pointer-events: none;
}

/* Combo highlight */
.cell.combo {
  background: rgba(229, 69, 96, 0.18);
  border-color: var(--clr-accent);
}

/* Destroy animation */
@keyframes destroy {
  0%   { transform: scale(1);   opacity: 1; }
  50%  { transform: scale(1.3); opacity: 0.6; background: var(--clr-accent); }
  100% { transform: scale(0);   opacity: 0; }
}

.cell.destroying {
  animation: destroy 0.35s ease-out forwards;
}

/* Placement animation */
@keyframes place {
  0%   { transform: scale(0) rotate(-15deg); opacity: 0; }
  70%  { transform: scale(1.1) rotate(3deg);  opacity: 1; }
  100% { transform: scale(1)   rotate(0deg);  opacity: 1; }
}

.cell.placing {
  animation: place 0.25s ease-out forwards;
}

/* ═══════════════════════════════════════════════
   COLUMN SCORE
════════════════════════════════════════════════ */
.col-score {
  font-size: clamp(13px, 2.2vw, 20px);
  font-weight: 900;
  color: var(--clr-text-muted);
  background: var(--clr-bg);
  border-radius: 8px;
  padding: 2px 10px;
  min-height: 1.6em;
  min-width: 2.4em;
  text-align: center;
  transition: color 0.2s, background 0.2s;
  line-height: 1.6;
}

.col-score.nonzero {
  color: var(--clr-accent2);
  background: rgba(245, 166, 35, 0.12);
}

/* ═══════════════════════════════════════════════
   CENTER HUD
════════════════════════════════════════════════ */
.hud {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: clamp(4px, 1vw, 10px);
  flex-shrink: 0;
  padding: 4px 0;
  transition: transform 0.4s ease;
}

.hud.p2 {
  transform: rotate(180deg);
}

.turn-indicator {
  font-size: clamp(12px, 1.8vw, 16px);
  font-weight: 600;
  color: var(--clr-text-muted);
  letter-spacing: 0.04em;
  text-align: center;
  transition: color 0.3s;
}

.turn-indicator.p1 { color: var(--clr-p1); }
.turn-indicator.p2 { color: var(--clr-p2); }

/* Static pause button footer — one per player zone */
.player-footer {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: clamp(4px, 0.8vw, 8px);
  width: 100%;
  padding: clamp(4px, 1vw, 10px) 0 0;
}

/* Live score shown above the pause button */
.zone-score {
  font-size: clamp(11px, 1.6vw, 15px);
  font-weight: 600;
  color: var(--clr-text-muted);
  letter-spacing: 0.04em;
  text-align: center;
}

/* Pause button */
.pause-btn {
  background: transparent;
  border: 2px solid var(--clr-border);
  border-radius: 50%;
  width: clamp(32px, 5vw, 46px);
  height: clamp(32px, 5vw, 46px);
  font-size: clamp(13px, 2vw, 18px);
  color: var(--clr-text-muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color 0.2s, color 0.2s, transform 0.1s;
  line-height: 1;
}

.pause-btn:active {
  transform: scale(0.9);
}

.pause-btn:hover {
  border-color: var(--clr-text-muted);
  color: var(--clr-text);
}

.pause-btn.hidden {
  visibility: hidden;
  pointer-events: none;
}

/* Pause overlay z-index — above game, below instructions */
#overlay-pause {
  z-index: 105;
}

/* ═══════════════════════════════════════════════
   DIE DISPLAY (center)
════════════════════════════════════════════════ */
.die-display {
  display: flex;
  align-items: center;
  justify-content: center;
}

.die {
  width:  clamp(56px, 10vw, 90px);
  height: clamp(56px, 10vw, 90px);
  background: var(--clr-die-bg);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: clamp(24px, 5vw, 44px);
  font-weight: 900;
  color: var(--clr-die-dot);
  box-shadow: 0 4px 16px rgba(0,0,0,0.5);
  transition: transform 0.1s;
}

@keyframes roll {
  0%   { transform: rotate(0deg)   scale(1);    }
  25%  { transform: rotate(90deg)  scale(0.85); }
  50%  { transform: rotate(180deg) scale(1.1);  }
  75%  { transform: rotate(270deg) scale(0.9);  }
  100% { transform: rotate(360deg) scale(1);    }
}

.die.rolling {
  animation: roll 0.4s ease-out;
}

/* ═══════════════════════════════════════════════
   ROLL BUTTON
════════════════════════════════════════════════ */
.roll-btn {
  background: var(--clr-accent);
  color: #fff;
  border: none;
  border-radius: 12px;
  padding: clamp(10px, 2vw, 16px) clamp(20px, 4vw, 36px);
  font-size: clamp(14px, 2.2vw, 20px);
  font-weight: 700;
  cursor: pointer;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  transition: background 0.15s, transform 0.1s, opacity 0.2s;
  box-shadow: 0 4px 12px rgba(233, 69, 96, 0.4);
}

.roll-btn:active {
  transform: scale(0.95);
}

.roll-btn:disabled {
  background: var(--clr-border);
  box-shadow: none;
  opacity: 0.5;
  cursor: not-allowed;
}

/* ═══════════════════════════════════════════════
   START ANNOUNCEMENT (full-screen, text on player's half)
════════════════════════════════════════════════ */
#overlay-announce {
  z-index: 50; /* above game, below gameover */
}

#overlay-instructions {
  z-index: 110; /* above welcome overlay */
}

/* Text block anchored to the starting player's half of the screen */
.announce-text {
  position: absolute;
  left: 0;
  right: 0;
  height: 42%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: clamp(28px, 6vw, 60px);
  font-weight: 900;
  text-align: center;
  line-height: 1.3;
  animation: fadeInAnnounce 0.35s ease;
}

/* P1 is at the bottom of the screen */
.announce-text.for-p1 { bottom: 0; }

/* P2 is at the top — rotate so P2 reads it right-side up */
.announce-text.for-p2 {
  top: 0;
  transform: rotate(180deg);
}

@keyframes fadeInAnnounce {
  from { opacity: 0; transform: scale(0.9); }
  to   { opacity: 1; transform: scale(1); }
}

/* P2 variant must keep the rotation while animating */
.announce-text.for-p2 {
  animation: fadeInAnnounceP2 0.35s ease;
}

@keyframes fadeInAnnounceP2 {
  from { opacity: 0; transform: rotate(180deg) scale(0.9); }
  to   { opacity: 1; transform: rotate(180deg) scale(1); }
}

/* ═══════════════════════════════════════════════
   WELCOME MENU BUTTONS
════════════════════════════════════════════════ */
.menu-buttons {
  display: flex;
  flex-direction: column;
  gap: 14px;
  width: 100%;
}

/* Difficulty sub-row (appears below "Contre le bot") */
.bot-diff-row {
  display: flex;
  gap: 8px;
  width: 100%;
  margin-top: -6px; /* pull up closer to the bot button */
}

.menu-btn--diff {
  flex: 1;
  padding: clamp(7px, 1.2vw, 11px) 0;
  font-size: clamp(11px, 1.6vw, 14px);
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  background: var(--clr-bg);
  color: var(--clr-text-muted);
  border: 2px solid var(--clr-border);
  border-radius: 10px;
  cursor: pointer;
  transition: border-color 0.15s, color 0.15s;
}

.menu-btn--diff-selected {
  border-color: var(--clr-accent);
  color: var(--clr-text);
}

.menu-btn {
  border: none;
  border-radius: 12px;
  padding: clamp(12px, 2vw, 18px) clamp(24px, 4vw, 40px);
  font-size: clamp(15px, 2.5vw, 20px);
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  background: var(--clr-border);
  color: var(--clr-text-muted);
  cursor: not-allowed;
}

.menu-btn--primary {
  background: var(--clr-accent);
  color: #fff;
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(233, 69, 96, 0.4);
  transition: background 0.15s, transform 0.1s;
}

.menu-btn--primary:active {
  transform: scale(0.97);
}

.menu-btn--secondary {
  background: var(--clr-surface);
  color: var(--clr-text);
  cursor: pointer;
  border: 2px solid var(--clr-border);
  transition: background 0.15s, transform 0.1s;
}

.menu-btn--secondary:active {
  transform: scale(0.97);
}

.menu-btn--disabled {
  opacity: 0.35;
}

/* ── Instructions card ── */
.instructions-card {
  max-width: min(680px, 92vw);
  max-height: 88dvh;
  overflow-y: auto;
  gap: clamp(20px, 3vw, 32px);
  text-align: left;
}

.instr-section {
  display: flex;
  gap: clamp(14px, 2.5vw, 24px);
  align-items: flex-start;
  width: 100%;
}

.instr-icon {
  font-size: clamp(28px, 5vw, 42px);
  flex-shrink: 0;
  line-height: 1.2;
}

.instr-section strong {
  display: block;
  font-size: clamp(18px, 2.8vw, 26px);
  color: var(--clr-text);
  margin-bottom: 6px;
}

.instr-section p {
  font-size: clamp(15px, 2.2vw, 20px);
  color: var(--clr-text-muted);
  line-height: 1.55;
}

.instr-example {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-top: 8px;
  padding: 10px 14px;
  background: var(--clr-bg);
  border-radius: 8px;
  font-size: clamp(14px, 2vw, 18px) !important;
  color: var(--clr-accent2) !important;
  font-weight: 700;
}

.instr-calc {
  margin-top: 8px;
  padding: 10px 14px;
  background: var(--clr-bg);
  border-radius: 8px;
  font-size: clamp(13px, 1.9vw, 17px) !important;
  color: var(--clr-text-muted) !important;
  line-height: 1.7;
}

.instr-calc span {
  color: var(--clr-accent2);
  font-weight: 700;
}

.instr-diff-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 10px;
}

.instr-diff-row {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: clamp(14px, 2vw, 18px);
  color: var(--clr-text-muted);
  text-align: left;
}

.instr-diff-badge {
  flex-shrink: 0;
  padding: 3px 12px;
  border-radius: 20px;
  font-size: clamp(11px, 1.5vw, 14px);
  font-weight: 700;
  border: 2px solid;
  width: 6em;
  text-align: center;
  margin-top: 2px;
}

.instr-diff-badge.easy   { border-color: #4caf50; color: #4caf50; }
.instr-diff-badge.medium { border-color: var(--clr-accent); color: var(--clr-accent); }
.instr-diff-badge.hard   { border-color: var(--clr-p2); color: var(--clr-p2); }

/* ═══════════════════════════════════════════════
   OVERLAYS (welcome, announce, gameover)
════════════════════════════════════════════════ */
.overlay {
  position: fixed;
  inset: 0;
  background: rgba(10, 10, 20, 0.88);
  backdrop-filter: blur(6px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
}

.overlay.hidden {
  display: none;
}

/* Welcome screen card */
.overlay-card {
  background: var(--clr-surface);
  border: 2px solid var(--clr-border);
  border-radius: 24px;
  padding: clamp(24px, 4vw, 48px) clamp(32px, 6vw, 64px);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
  min-width: 300px;
  text-align: center;
}

/* Pause card: allow vertical scroll if leaderboard is long */
.pause-card {
  max-height: 90dvh;
  overflow-y: auto;
  min-width: clamp(300px, 50vw, 480px);
}

/* ── Leaderboard (inside pause menu) ── */
.leaderboard {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 10px;
  border-top: 2px solid var(--clr-border);
  border-bottom: 2px solid var(--clr-border);
  padding: 14px 0;
}

.lb-sep {
  color: var(--clr-border);
  font-weight: 400;
  padding: 0 2px;
}

.lb-history {
  display: flex;
  flex-direction: column;
  gap: 6px;
  max-height: 30dvh;
  overflow-y: auto;
  padding: 4px 0;
}

/* Both summary and game rows share the same symmetric layout */
.lb-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(6px, 1.2vw, 10px);
  font-weight: 600;
  width: 100%;
}

.lb-left {
  min-width: 4.5em;
  text-align: right;
}

.lb-right {
  min-width: 4.5em;
  text-align: left;
}

.lb-sep--tie {
  color: var(--clr-accent2);
  font-weight: 700;
}

/* Small tie count note below summary */
.lb-ties-note {
  text-align: center;
  font-size: clamp(11px, 1.6vw, 14px);
  color: var(--clr-accent2);
  font-weight: 600;
  margin-top: -4px;
}

.lb-summary {
  font-size: clamp(16px, 2.5vw, 22px);
}

.lb-game {
  font-size: clamp(13px, 2vw, 17px);
  color: var(--clr-text-muted);
}

.lb-empty {
  font-size: clamp(13px, 1.8vw, 15px);
  color: var(--clr-text-muted);
  font-style: italic;
}

.lb-title {
  text-align: center;
  font-size: clamp(10px, 1.4vw, 13px);
  font-weight: 700;
  color: var(--clr-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.overlay-title {
  font-size: clamp(24px, 4vw, 40px);
  font-weight: 900;
}

/* ── Game over split-screen halves ── */
.gameover-half {
  position: absolute;
  left: 0;
  right: 0;
  height: 36%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: clamp(4px, 1vw, 12px);
  animation: fadeInAnnounce 0.4s ease;
}

.gameover-half--bottom { bottom: 0; }

.gameover-half--top {
  top: 0;
  animation: fadeInAnnounceP2 0.4s ease;
  transform: rotate(180deg);
}

.gameover-result {
  font-size: clamp(18px, 3.5vw, 40px);
  font-weight: 900;
  text-align: center;
  line-height: 1.2;
}

.gameover-score {
  font-size: clamp(36px, 9vw, 80px);
  font-weight: 900;
  line-height: 1;
}

/* Center billboard + restart */
.gameover-center {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: clamp(6px, 1.2vw, 14px);
  width: 100%;
}

.gameover-billboard {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(8px, 2vw, 20px);
  font-size: clamp(13px, 2vw, 20px);
  font-weight: 600;
  color: var(--clr-text-muted);
  width: 100%;
  padding: 0 clamp(16px, 4vw, 40px);
  letter-spacing: 0.04em;
}

.gameover-billboard--p2 { transform: rotate(180deg); }

/* Session record on P2's side — rotated to match the P2 billboard */
#session-record-p2 { transform: rotate(180deg); }

.billboard-vs {
  color: var(--clr-border);
  font-size: 0.85em;
}

.gameover-sep {
  width: clamp(100px, 28vw, 260px);
  height: 2px;
  background: var(--clr-border);
  border-radius: 2px;
}

/* Session win record — shown on game over screen */
.session-record {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  font-size: clamp(12px, 1.8vw, 16px);
  font-weight: 600;
  color: var(--clr-text);
  letter-spacing: 0.04em;
  text-align: center;
  margin-top: clamp(4px, 0.8vw, 8px);
}

.sr-label {
  font-size: 0.72em;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--clr-text-muted);
}

.sr-ties {
  font-size: 0.72em;
  color: var(--clr-accent2);
}

/* ═══════════════════════════════════════════════
   BOT MODE — P2 board faces P1 (no 180° flip)
════════════════════════════════════════════════ */

/* P2 zone: cancel the rotation so P1 can read the bot's board */
.bot-mode .player-zone--top {
  transform: none;
}

/* P2 side-total was DOM-first (left) because rotation used to flip it to right.
   Without rotation, reverse the wrapper so side-total ends up on the right,
   matching P1's layout. */
.bot-mode #zone-player2 .board-wrapper {
  flex-direction: row-reverse;
}

/* P2 columns: col-score is DOM-first, so without rotation it sits at the top.
   Reverse column direction so col-score drops to the bottom (near HUD),
   mirroring P1's column layout. */
.bot-mode #zone-player2 .column {
  flex-direction: column-reverse;
}

/* Bot has no human to pause — hide P2's pause button */
.bot-mode #pause-btn-p2 {
  visibility: hidden;
  pointer-events: none;
}

/* HUD: stay upright even on the bot's turn */
.bot-mode .hud.p2 {
  transform: none;
}

/* Start announcement for P2 in bot mode: appears at top, no rotation */
.bot-mode .announce-text.for-p2 {
  transform: none;
  animation: fadeInAnnounce 0.35s ease;
}

/* Game over in bot mode: hide P2 half, P2 billboard, separator above buttons, P2 session record */
.bot-mode .gameover-half--top        { display: none; }
.bot-mode #billboard-top             { display: none; }
.bot-mode #billboard-top + .gameover-sep { display: none; }
.bot-mode #session-record-p2         { display: none; }