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

html, body {
  width: 100%;
  height: 100%;
  background: #444;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: "Courier New", "Consolas", monospace;
  -webkit-user-select: none;
  user-select: none;
}

#phone {
  width: 240px;
  height: 320px;
  background: var(--bg, #c7d6c0);
  color: var(--fg, #1c2b17);
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: 0 0 0 6px #222, 0 0 20px rgba(0,0,0,0.6);
  image-rendering: pixelated;
  outline: none;
}

/* ---------- Header ---------- */

#header {
  height: 22px;
  flex: 0 0 22px;
  background: var(--header-bg, #1c2b17);
  color: var(--header-fg, #c7d6c0);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  letter-spacing: 1px;
  font-weight: bold;
}

/* ---------- Screens ---------- */

#screens {
  flex: 1 1 auto;
  position: relative;
  overflow: hidden;
}

.screen {
  position: absolute;
  inset: 0;
  display: none;
  flex-direction: column;
}
.screen.active { display: flex; }

.screen-heading {
  font-size: 9px;
  font-weight: bold;
  text-align: center;
  padding: 6px 0 2px;
  letter-spacing: 1px;
}

/* ---------- Menu list ---------- */

.menu-list {
  list-style: none;
  padding: 6px 8px;
  flex: 1 1 auto;
}

.menu-list li {
  font-size: 10px;
  line-height: 22px;
  padding: 0 4px;
  white-space: nowrap;
}

.menu-list li.sel {
  background: var(--sel-bg, #1c2b17);
  color: var(--sel-fg, #c7d6c0);
}

.hint-text {
  font-size: 8px;
  padding: 4px 10px 8px;
  opacity: 0.8;
  line-height: 1.4;
}

/* ---------- Game screen ---------- */

#gameArea {
  flex: 1 1 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  padding: 2px 4px;
}

#board {
  border: 1px solid var(--fg, #1c2b17);
  image-rendering: pixelated;
}

#sidePanel {
  width: 78px;
  height: 240px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.panel-box {
  background: var(--panel-bg, #b7c8ae);
  border: 1px solid var(--fg, #1c2b17);
  padding: 3px 4px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.panel-label {
  font-size: 7px;
  letter-spacing: 1px;
  opacity: 0.75;
}

.panel-val {
  font-size: 12px;
  font-weight: bold;
  line-height: 1.3;
}

#nextCanvas {
  width: 56px;
  height: 56px;
}

/* ---------- Pause / Game over ---------- */

.center-msg {
  flex: 1 1 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: 6px;
}

.center-msg .big {
  font-size: 16px;
  font-weight: bold;
  letter-spacing: 1px;
}

.center-msg .small {
  font-size: 9px;
}

.center-msg p {
  font-size: 10px;
  line-height: 1.6;
}

.tp-title {
  font-size: 12px;
  font-weight: bold;
  letter-spacing: 1px;
  padding-bottom: 4px;
}

.tp-sub {
  font-size: 9px;
  font-weight: bold;
  padding-top: 4px;
}

/* ---------- Help / About text pages ---------- */

.text-page {
  flex: 1 1 auto;
  overflow-y: auto;
  padding: 8px 10px;
  font-size: 9px;
  line-height: 1.5;
}

.text-page p { padding: 2px 0; }

/* ---------- Softkey bar ---------- */

#softkeys {
  flex: 0 0 22px;
  height: 22px;
  background: var(--soft-bg, #1c2b17);
  color: var(--soft-fg, #c7d6c0);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 8px;
  font-size: 9px;
  font-weight: bold;
}