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

body {
  margin: 0;
  padding: 0;
  overflow: hidden;
  user-select: none;
  -webkit-user-select: none;
}

/* ---- Menu Bar ---- */
.menu-bar {
  display: flex;
  align-items: center;
  height: 20px;
  background: var(--sz-color-menu);
  border-bottom: 1px solid var(--sz-color-button-shadow);
  padding: 0 2px;
  position: relative;
}

.menu-item {
  padding: 2px 8px;
  cursor: default;
  color: var(--sz-color-menu-text);
  position: relative;
}

.menu-item:hover, .menu-item.open {
  background: var(--sz-color-highlight);
  color: var(--sz-color-highlight-text);
}

.menu-dropdown {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  background: var(--sz-color-menu);
  border: 2px outset var(--sz-color-button-face);
  box-shadow: 2px 2px 4px rgba(0,0,0,0.3);
  z-index: 1000;
  min-width: 180px;
  padding: 2px 0;
}

.menu-dropdown.visible { display: block; }

.menu-entry {
  padding: 3px 24px 3px 24px;
  cursor: default;
  white-space: nowrap;
  color: var(--sz-color-menu-text);
  position: relative;
}

.menu-entry:hover {
  background: var(--sz-color-highlight);
  color: var(--sz-color-highlight-text);
}

.menu-entry .shortcut {
  float: right;
  margin-left: 24px;
  opacity: 0.7;
}

.menu-entry.disabled {
  color: var(--sz-color-button-shadow);
  pointer-events: none;
}

.menu-separator {
  height: 1px;
  background: var(--sz-color-button-shadow);
  margin: 3px 4px;
}

/* ---- Game Frame ---- */
.game-frame {
  border: 3px solid;
  border-color: var(--sz-color-button-highlight) var(--sz-color-button-shadow) var(--sz-color-button-shadow) var(--sz-color-button-highlight);
  margin: 4px;
  padding: 5px;
  background: var(--sz-color-button-face);
}

.game-layout {
  display: flex;
  gap: 8px;
}

/* ---- Board ---- */
.board-border {
  border: 3px solid;
  border-color: var(--sz-color-button-shadow) var(--sz-color-button-highlight) var(--sz-color-button-highlight) var(--sz-color-button-shadow);
}

.board {
  display: grid;
  grid-template-columns: repeat(10, 20px);
  grid-template-rows: repeat(20, 20px);
  background: #000;
  line-height: 0;
}

.board-cell {
  width: 20px;
  height: 20px;
  border: 1px solid #111;
  background: #000;
}

.board-cell.filled {
  border: 2px outset;
}

.board-cell.ghost {
  border: 1px solid;
  background: transparent !important;
  opacity: 0.3;
}

.board-cell.clearing {
  animation: flash-row 0.3s ease-in-out;
}

@keyframes flash-row {
  0% { background: #fff; }
  50% { background: #fff; }
  100% { background: #000; }
}

/* Piece colors with 3D borders */
.piece-I { background: #00f0f0; border-color: #60ffff #009090 #009090 #60ffff; }
.piece-O { background: #f0f000; border-color: #ffff60 #909000 #909000 #ffff60; }
.piece-T { background: #a000f0; border-color: #d060ff #600090 #600090 #d060ff; }
.piece-S { background: #00f000; border-color: #60ff60 #009000 #009000 #60ff60; }
.piece-Z { background: #f00000; border-color: #ff6060 #900000 #900000 #ff6060; }
.piece-J { background: #0000f0; border-color: #6060ff #000090 #000090 #6060ff; }
.piece-L { background: #f0a000; border-color: #ffd060 #906000 #906000 #ffd060; }

/* ---- Side Panel ---- */
.side-panel {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 100px;
}

.panel-box {
  border: 2px solid;
  border-color: var(--sz-color-button-shadow) var(--sz-color-button-highlight) var(--sz-color-button-highlight) var(--sz-color-button-shadow);
  padding: 4px;
  background: var(--sz-color-button-face);
}

.panel-label {
  font-size: 10px;
  font-weight: bold;
  color: var(--sz-color-menu-text);
  margin-bottom: 3px;
  text-align: center;
}

/* LED-style display */
.led-display {
  background: #000;
  color: #f00;
  font-family: 'Consolas', 'Courier New', monospace;
  font-size: 18px;
  font-weight: bold;
  letter-spacing: 1px;
  padding: 2px 4px;
  border: 1px solid;
  border-color: var(--sz-color-button-shadow) var(--sz-color-button-highlight) var(--sz-color-button-highlight) var(--sz-color-button-shadow);
  text-align: right;
  line-height: 1.2;
  min-width: 80px;
}

/* Next piece preview */
.preview-grid {
  display: grid;
  grid-template-columns: repeat(4, 16px);
  grid-template-rows: repeat(4, 16px);
  background: #000;
  border: 1px solid;
  border-color: var(--sz-color-button-shadow) var(--sz-color-button-highlight) var(--sz-color-button-highlight) var(--sz-color-button-shadow);
  margin: 0 auto;
}

.preview-cell {
  width: 16px;
  height: 16px;
  background: #000;
}

.preview-cell.filled {
  border: 2px outset;
}

/* ---- Overlays ---- */
.game-overlay {
  display: none;
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.7);
  z-index: 100;
  align-items: center;
  justify-content: center;
  flex-direction: column;
}

.game-overlay.visible {
  display: flex;
}

.overlay-text {
  color: #fff;
  font-size: 24px;
  font-weight: bold;
  text-shadow: 2px 2px 4px #000;
  text-align: center;
  line-height: 1.6;
}

.overlay-subtext {
  color: #ccc;
  font-size: 12px;
  margin-top: 8px;
  text-align: center;
}

.overlay-score {
  color: #ff0;
  font-size: 16px;
  font-weight: bold;
  margin-top: 4px;
}

.board-wrapper {
  position: relative;
}

/* ---- Dialog ---- */
.dialog-overlay {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0, 0, 0, 0.25);
  z-index: 2000;
  justify-content: center;
  align-items: center;
}

.dialog-overlay.visible {
  display: flex;
}

.dialog {
  background: var(--sz-color-button-face);
  border: 2px outset var(--sz-color-button-face);
  box-shadow: 2px 2px 8px rgba(0, 0, 0, 0.4);
  min-width: 280px;
  max-width: 400px;
}

.dialog-title {
  background: linear-gradient(180deg, #0a246a 0%, #3a6ea5 100%);
  background-color: var(--sz-color-active-title);
  color: var(--sz-color-title-text);
  font-size: 11px;
  font-weight: bold;
  padding: 3px 6px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  user-select: none;
}

.dialog-body {
  padding: 12px 16px;
  font-size: 11px;
  line-height: 1.6;
}

.dialog-buttons {
  display: flex;
  justify-content: center;
  gap: 8px;
  padding: 8px 16px 12px;
}

.dialog-buttons button {
  min-width: 75px;
  height: 23px;
  border: 2px outset var(--sz-color-button-face);
  background: var(--sz-color-button-face);
  font-family: inherit;
  font-size: 11px;
  cursor: pointer;
}

.dialog-buttons button:active {
  border-style: inset;
}

/* ---- High Scores Table ---- */
.high-scores-table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 4px;
  font-size: 11px;
}

.high-scores-table th {
  text-align: left;
  padding: 2px 6px;
  font-weight: bold;
  border-bottom: 1px solid var(--sz-color-button-shadow);
}

.high-scores-table td {
  padding: 2px 6px;
}

.high-scores-table td:nth-child(1) {
  text-align: center;
  width: 24px;
}

.high-scores-table td:nth-child(2) {
  text-align: right;
  font-family: 'Consolas', 'Courier New', monospace;
}

.high-scores-table td:nth-child(3) {
  text-align: right;
  font-size: 10px;
  color: var(--sz-color-button-shadow);
}

/* ---- Controls Info ---- */
.controls-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 11px;
}

.controls-table td {
  padding: 2px 6px;
}

.controls-table td:first-child {
  font-weight: bold;
  white-space: nowrap;
  width: 90px;
}