@font-face {
  font-family: "Edit Undo";
  src: url("/assets/fonts/editundo.ttf") format("truetype");
  font-display: swap;
}

:root {
  --bg-dark: #0b0f19;
  --bg-card: rgba(18, 26, 43, 0.82);
  --bg-card-hover: rgba(26, 37, 60, 0.9);
  --border-card: rgba(255, 255, 255, 0.08);
  --border-card-bright: rgba(255, 255, 255, 0.18);
  
  --text-main: #f0f4fc;
  --text-muted: #8b9bb4;
  --text-dim: #5c6b84;

  --accent-blue: #3a86ff;
  --accent-cyan: #00f5d4;
  --accent-gold: #ffbe0b;
  --accent-orange: #fb5607;
  --accent-red: #ff0054;
  --accent-green: #38b000;

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;

  --board-max-size: min(88vw, 460px);
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  background-color: var(--bg-dark);
  color: var(--text-main);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  user-select: none;
  -webkit-user-select: none;
}

.sjakk-shell {
  position: relative;
  z-index: 10;
  width: 100%;
  max-width: 580px;
  margin: 0 auto;
  padding: 0.75rem 0.75rem 2.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

/* Header */
.sjakk-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.5rem 0.75rem;
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
}

.header-left {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.text-btn-link {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-muted);
  text-decoration: none;
  background: rgba(255, 255, 255, 0.05);
  padding: 0.35rem 0.6rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-card);
  transition: all 0.2s ease;
}

.text-btn-link:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.12);
}

.brand-wrap {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.header-pixel-icon {
  width: 32px;
  height: 32px;
  image-rendering: pixelated;
}

.game-title {
  font-family: "Edit Undo", monospace, sans-serif;
  font-size: 1.3rem;
  letter-spacing: 0.05em;
  color: #fff;
  line-height: 1.1;
}

.game-subtitle {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.header-controls {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.btn {
  font-family: inherit;
  font-size: 0.85rem;
  font-weight: 600;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  padding: 0.5rem 0.85rem;
  transition: all 0.15s ease;
}

.btn-icon {
  width: 36px;
  height: 36px;
  padding: 0;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border-card);
  color: var(--text-main);
  font-size: 1rem;
}

.btn-icon:hover {
  background: rgba(255, 255, 255, 0.15);
  transform: translateY(-1px);
}

.btn-primary {
  background: linear-gradient(135deg, #3a86ff, #0077b6);
  color: #fff;
  box-shadow: 0 4px 14px rgba(58, 134, 255, 0.35);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #4d94ff, #0088cc);
  transform: translateY(-1px);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-main);
  border: 1px solid var(--border-card);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.15);
}

.btn-sm {
  padding: 0.38rem 0.7rem;
  font-size: 0.8rem;
}

.btn-full-width {
  width: 100%;
}

.btn-large {
  padding: 0.75rem 1.25rem;
  font-size: 1rem;
}

/* Mode Selector Bar */
.mode-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.mode-tabs {
  display: flex;
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-sm);
  padding: 2px;
}

.mode-tab {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.35rem 0.75rem;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.15s ease;
}

.mode-tab.active {
  background: rgba(58, 134, 255, 0.3);
  color: #fff;
  border: 1px solid rgba(58, 134, 255, 0.4);
}

.room-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: rgba(251, 86, 7, 0.18);
  border: 1px solid rgba(251, 86, 7, 0.4);
  padding: 0.25rem 0.6rem;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
}

.room-pill-label {
  color: var(--text-muted);
  font-size: 0.7rem;
  font-weight: 700;
}

.room-pill-code {
  font-family: monospace;
  color: #ffbe0b;
  letter-spacing: 0.08em;
  font-size: 0.95rem;
}

.room-copy-btn {
  background: transparent;
  border: none;
  cursor: pointer;
  font-size: 0.85rem;
  padding: 0 0.2rem;
  transition: transform 0.1s ease;
}

.room-copy-btn:hover {
  transform: scale(1.15);
}

/* Main Layout */
.sjakk-layout {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

/* Player Cards */
.player-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.55rem 0.85rem;
  background: var(--bg-card);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  transition: all 0.2s ease;
}

.player-card.is-turn {
  border-color: rgba(58, 134, 255, 0.5);
  box-shadow: 0 0 16px rgba(58, 134, 255, 0.2);
  background: rgba(28, 40, 68, 0.9);
}

.player-info {
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

.player-avatar-wrap {
  position: relative;
}

.player-avatar {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--border-card-bright);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  overflow: hidden;
}

.player-mon-img {
  width: 30px;
  height: 30px;
  object-fit: contain;
  image-rendering: pixelated;
  image-rendering: crisp-edges;
  display: block;
}

.player-color-indicator {
  position: absolute;
  bottom: -2px;
  right: -2px;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  border: 2px solid var(--bg-dark);
}

.player-color-indicator.white {
  background: #ffffff;
  box-shadow: 0 0 4px #ffffff;
}

.player-color-indicator.black {
  background: #2b2b36;
  border-color: #555;
}

.player-meta {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.player-name-row {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.player-name {
  font-size: 0.9rem;
  font-weight: 700;
  color: #fff;
}

.turn-badge {
  font-size: 0.65rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  background: var(--accent-green);
  color: #fff;
  padding: 1px 6px;
  border-radius: 4px;
  animation: pulseTurn 1.2s infinite ease-in-out;
}

@keyframes pulseTurn {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.75; transform: scale(0.96); }
}

.captured-tray {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 1px;
  min-height: 18px;
}

.tray-piece {
  width: 16px;
  height: 16px;
  image-rendering: pixelated;
  background-image: url("assets/pieces.png");
  background-size: 300% 400%;
  background-repeat: no-repeat;
  display: inline-block;
}

.player-right {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.material-lead {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--accent-gold);
}

.chess-clock {
  font-family: "Edit Undo", monospace, sans-serif;
  font-size: 1.25rem;
  letter-spacing: 0.06em;
  background: rgba(0, 0, 0, 0.4);
  padding: 0.3rem 0.65rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-card);
  color: var(--text-muted);
  min-width: 72px;
  text-align: center;
  transition: all 0.2s ease;
}

.chess-clock.active {
  color: #fff;
  border-color: rgba(58, 134, 255, 0.5);
  background: rgba(10, 20, 40, 0.7);
}

.chess-clock.low-time {
  color: var(--accent-red);
  border-color: var(--accent-red);
  animation: blinkClock 0.8s infinite alternate ease-in-out;
}

@keyframes blinkClock {
  0% { transform: scale(1); }
  100% { transform: scale(1.05); }
}

/* Board Area */
.board-wrapper {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
  padding: 0.25rem 0;
}

.board-frame {
  position: relative;
  width: var(--board-max-size);
  height: var(--board-max-size);
  max-width: 100%;
  aspect-ratio: 1 / 1;
  background-image: url("assets/whiteboard.png");
  background-size: 100% 100%;
  background-repeat: no-repeat;
  image-rendering: pixelated;
  image-rendering: crisp-edges;
  /* 9px border in 202px image = 4.455% padding */
  padding: calc(9 / 202 * 100%);
  border-radius: 6px;
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(255, 255, 255, 0.08);
}

.board-frame.black-perspective {
  background-image: url("assets/blackboard.png");
}

.chess-grid {
  width: 100%;
  height: 100%;
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  grid-template-rows: repeat(8, 1fr);
  position: relative;
}

/* Squares */
.square {
  position: relative;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background-color 0.15s ease;
}

.square.selected {
  background-color: rgba(58, 134, 255, 0.45) !important;
  box-shadow: inset 0 0 0 2px #3a86ff;
}

.square.last-move {
  background-color: rgba(255, 190, 11, 0.25);
}

.square.in-check {
  background-color: rgba(255, 0, 84, 0.55) !important;
  animation: checkPulse 0.9s infinite alternate;
}

@keyframes checkPulse {
  0% { box-shadow: inset 0 0 0 2px #ff0054; }
  100% { box-shadow: inset 0 0 12px #ff0054, inset 0 0 0 3px #ff0054; }
}

/* Legal Move Indicators */
.square .move-dot {
  position: absolute;
  width: 30%;
  height: 30%;
  border-radius: 50%;
  background: rgba(56, 176, 0, 0.7);
  box-shadow: 0 0 6px rgba(56, 176, 0, 0.8);
  pointer-events: none;
  z-index: 5;
}

.square .capture-ring {
  position: absolute;
  width: 86%;
  height: 86%;
  border-radius: 50%;
  border: 3px solid rgba(255, 0, 84, 0.75);
  box-shadow: 0 0 8px rgba(255, 0, 84, 0.4);
  pointer-events: none;
  z-index: 5;
}

/* Pieces */
.chess-piece {
  position: relative;
  width: 100%;
  height: 100%;
  pointer-events: auto;
  z-index: 4;
}

.piece-shadow {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: url("assets/shadows.png");
  background-size: 300% 400%;
  background-repeat: no-repeat;
  image-rendering: pixelated;
  image-rendering: crisp-edges;
  pointer-events: none;
  z-index: 1;
}

.piece-sprite {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: url("assets/pieces.png");
  background-size: 300% 400%;
  background-repeat: no-repeat;
  image-rendering: pixelated;
  image-rendering: crisp-edges;
  pointer-events: none;
  z-index: 2;
  transition: transform 0.12s cubic-bezier(0.2, 0.8, 0.3, 1);
}

.chess-piece:hover .piece-sprite,
.chess-piece.dragging .piece-sprite {
  transform: translateY(-4px) scale(1.08);
}

/* Sprite Coordinate Mappings */
/* Black Pieces (rows 0 and 1) */
.piece-p { background-position: 0% 0%; }
.piece-q { background-position: 50% 0%; }
.piece-k { background-position: 100% 0%; }
.piece-n { background-position: 0% 33.333%; }
.piece-r { background-position: 50% 33.333%; }
.piece-b { background-position: 100% 33.333%; }

/* White Pieces (rows 2 and 3) */
.piece-P { background-position: 0% 66.667%; }
.piece-Q { background-position: 50% 66.667%; }
.piece-K { background-position: 100% 66.667%; }
.piece-N { background-position: 0% 100%; }
.piece-R { background-position: 50% 100%; }
.piece-B { background-position: 100% 100%; }

/* Check Banner */
.check-banner {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: rgba(255, 0, 84, 0.9);
  color: #fff;
  font-family: "Edit Undo", monospace, sans-serif;
  font-size: 1.4rem;
  letter-spacing: 0.1em;
  padding: 0.35rem 1.25rem;
  border-radius: var(--radius-sm);
  box-shadow: 0 4px 20px rgba(255, 0, 84, 0.6);
  pointer-events: none;
  z-index: 20;
  animation: bannerPop 0.3s ease-out;
}

@keyframes bannerPop {
  0% { transform: translate(-50%, -50%) scale(0.6); opacity: 0; }
  100% { transform: translate(-50%, -50%) scale(1); opacity: 1; }
}

/* Move Ticker Card */
.move-ticker-card {
  background: var(--bg-card);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  padding: 0.55rem 0.85rem;
}

.ticker-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.35rem;
}

.ticker-title {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-muted);
}

.ticker-status {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent-blue);
}

.move-history-scroll {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  overflow-x: auto;
  white-space: nowrap;
  padding-bottom: 0.2rem;
  font-size: 0.85rem;
  scrollbar-width: thin;
}

.move-empty-hint {
  color: var(--text-dim);
  font-size: 0.78rem;
  font-style: italic;
}

.move-turn-block {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  background: rgba(255, 255, 255, 0.04);
  padding: 0.15rem 0.45rem;
  border-radius: 4px;
}

.move-turn-num {
  color: var(--text-dim);
  font-weight: 700;
  font-size: 0.75rem;
}

.move-san {
  color: #fff;
  font-weight: 600;
}

/* Actions Card */
.actions-card {
  background: var(--bg-card);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  padding: 0.65rem 0.85rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.action-buttons-group {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.4rem;
  flex-wrap: wrap;
}

.settings-inline-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.6rem;
  padding-top: 0.35rem;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.setting-label {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.78rem;
  color: var(--text-muted);
}

.checkbox-label {
  cursor: pointer;
}

.checkbox-label input {
  accent-color: var(--accent-blue);
  cursor: pointer;
}

.sjakk-select {
  background: rgba(0, 0, 0, 0.35);
  color: #fff;
  border: 1px solid var(--border-card);
  border-radius: 6px;
  padding: 0.25rem 0.5rem;
  font-size: 0.78rem;
  outline: none;
}

/* Modals */
.sjakk-modal {
  border: none;
  background: transparent;
  padding: 0;
  margin: auto;
  max-width: 90vw;
  width: 360px;
}

.sjakk-modal::backdrop {
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}

.modal-box {
  background: #111726;
  border: 1px solid var(--border-card-bright);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  color: #fff;
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.6);
}

.modal-title {
  font-size: 1.25rem;
  font-weight: 800;
  margin-bottom: 0.35rem;
}

.modal-subtitle {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.modal-header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.75rem;
}

.btn-close-modal {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 1.5rem;
  cursor: pointer;
  line-height: 1;
}

.btn-close-modal:hover {
  color: #fff;
}

/* Promotion choices */
.promotion-choices {
  display: flex;
  align-items: center;
  justify-content: space-around;
  gap: 0.5rem;
  margin: 1rem 0;
}

.promo-btn {
  width: 60px;
  height: 60px;
  background: rgba(255, 255, 255, 0.05);
  border: 2px solid var(--border-card);
  border-radius: var(--radius-md);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  transition: all 0.15s ease;
}

.promo-btn:hover {
  background: rgba(58, 134, 255, 0.25);
  border-color: var(--accent-blue);
  transform: translateY(-2px);
}

.promo-piece-inner {
  width: 44px;
  height: 44px;
  image-rendering: pixelated;
  image-rendering: crisp-edges;
  background-image: url("assets/pieces.png");
  background-size: 300% 400%;
  background-repeat: no-repeat;
}

/* Game Over */
.gameover-trophy {
  font-size: 3.5rem;
  margin-bottom: 0.5rem;
  animation: trophyFloat 2s infinite ease-in-out;
}

@keyframes trophyFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

.gameover-title {
  font-size: 1.6rem;
  font-weight: 800;
  margin-bottom: 0.35rem;
}

.gameover-reason {
  font-size: 0.95rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

.gameover-actions {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

/* Room Setup Modal Tabs */
.room-setup-tabs {
  display: flex;
  border-bottom: 1px solid var(--border-card);
  margin-bottom: 1rem;
}

.room-tab {
  flex: 1;
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  padding: 0.6rem 0;
  color: var(--text-muted);
  font-weight: 700;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all 0.15s ease;
}

.room-tab.active {
  color: #fff;
  border-bottom-color: var(--accent-blue);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  margin-bottom: 1rem;
  text-align: left;
}

.form-group label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
}

.form-input {
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid var(--border-card);
  color: #fff;
  padding: 0.65rem 0.85rem;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  outline: none;
  transition: border-color 0.15s ease;
}

.form-input:focus {
  border-color: var(--accent-blue);
}

.text-uppercase {
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: 700;
}

/* Scrollable Help Body */
.modal-body-scroll {
  max-height: 60vh;
  overflow-y: auto;
  text-align: left;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  font-size: 0.85rem;
  line-height: 1.5;
  color: #d1d8e6;
}

.help-section h4 {
  font-size: 0.95rem;
  color: #fff;
  margin-bottom: 0.25rem;
}

.help-section ul {
  padding-left: 1.25rem;
}

.hidden {
  display: none !important;
}

.text-center {
  text-align: center;
}