:root {
    --bg-color: #2c2c2c;
    --panel-bg: rgba(255, 255, 255, 0.1);
    --text-color: #ffffff;
    --board-light: #ebecd0;
    --board-dark: #739552;
    --highlight: rgba(255, 255, 51, 0.5);
    --accent-green: #81b64c;
    --accent-red: #d32f2f;
    --accent-blue: #2196F3;
}

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

body {
    font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    overflow: hidden;
    position: relative;
}

h1 {
    font-weight: 300;
    letter-spacing: 2px;
    font-size: 2rem;
    position: absolute;
    top: 20px;
    width: 100%;
    text-align: center;
    pointer-events: none;
}

.game-wrap {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    height: 100%;
}

#board {
    display: grid;
    grid-template-columns: repeat(8, 12.5%);
    grid-template-rows: repeat(8, 12.5%);
    width: 80vmin;
    height: 80vmin;
    max-width: 800px;
    max-height: 800px;
    border: 8px solid #444;
    border-radius: 4px;
    background: #333;
    box-shadow: 0 20px 60px rgba(0,0,0,0.5);
    z-index: 1;
}

.square {
    position: relative;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.light { background-color: var(--board-light); }
.dark { background-color: var(--board-dark); }

.square.selected { background-color: var(--highlight) !important; }

.square.move-dot::after {
    content: "";
    position: absolute;
    width: 25%; height: 25%;
    background: rgba(0,0,0,0.2);
    border-radius: 50%;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    pointer-events: none;
}
.square.move-dot:has(.piece)::after {
    width: 90%; height: 90%;
    background: transparent;
    border: 6px solid rgba(0,0,0,0.2);
}

.piece {
    position: absolute;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    width: 100%; height: 100%;
    cursor: grab;
    z-index: 10;
}
.piece:active {
    cursor: grabbing;
    transform: translate(-50%, -50%) scale(1.1);
}

.side-panel {
    position: absolute;
    right: 40px;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    flex-direction: column;
    gap: 15px;
    width: 220px;
    padding: 25px;
    background: var(--panel-bg);
    border-radius: 12px;
    backdrop-filter: blur(12px);
    box-shadow: 0 8px 32px rgba(0,0,0,0.3);
    border: 1px solid rgba(255,255,255,0.05);
    z-index: 10;
}

@media (max-width: 1200px) {
    .game-wrap {
        flex-direction: column;
    }
    .side-panel {
        position: static;
        transform: none;
        margin-top: 30px;
        width: 80vmin; /* Match board width */
        max-width: 500px;
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
    }
    h1 {
        position: static;
        margin-bottom: 10px;
    }
}

#turn-indicator {
    font-size: 1.1rem;
    padding: 12px;
    background: var(--accent-green);
    border-radius: 6px;
    text-align: center;
    color: #fff;
    font-weight: 800;
    border-left: none;
}

.controls {
    display: flex;
    flex-direction: column;
    gap: 10px;
    width: 100%;
}

@media (max-width: 1200px) {
    .controls { flex-direction: row; width: auto; gap: 10px; }
}

button {
    padding: 14px;
    font-size: 0.95rem;
    font-weight: 700;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    text-transform: uppercase;
    transition: all 0.2s ease;
}

button:hover { filter: brightness(1.15); transform: translateY(-2px); }
button:active { transform: translateY(0); }

#drawBtn { background-color: var(--accent-blue); color: white; }
#resignBtn { background-color: var(--accent-red); color: white; }

/* --- Portrait-only: show an overlay when the phone is rotated --- */
#rotate-overlay {
  display: none;              /* hidden in portrait */
  position: fixed;
  inset: 0;
  z-index: 9999;              /* above #connection-panel (z-index: 2000) */
  background: #111;
  color: #fff;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 24px;
}

#rotate-overlay .rotate-card {
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 16px;
  padding: 18px 20px;
  max-width: 320px;
}

#rotate-overlay .rotate-title {
  font-size: 1.2rem;
  font-weight: 800;
  margin-bottom: 6px;
}

#rotate-overlay .rotate-sub {
  font-size: 0.95rem;
  opacity: 0.9;
}

/* Only on phones + landscape: show overlay and hide everything else */
@media (max-width: 900px) and (orientation: landscape) {
  #rotate-overlay { display: flex; }

  body > *:not(#rotate-overlay) {
    display: none !important;
  }
}

#connection-panel {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: rgba(0, 0, 0, 0.92);
    z-index: 2000;
    display: flex;
    justify-content: center;
    align-items: center;
}

.connection-box {
    background: #1e1e1e;
    padding: 40px;
    border-radius: 16px;
    width: 90%;
    max-width: 480px;
    text-align: center;
    border: 1px solid #333;
    box-shadow: 0 20px 60px rgba(0,0,0,0.8);
}

.connection-box h2 { color: var(--accent-green); margin-bottom: 20px; font-weight: 400; }

.code-area { margin: 25px 0; text-align: left; }
.code-area label { display: block; color: #888; margin-bottom: 8px; font-size: 0.85rem; font-weight: 600; letter-spacing: 0.5px; }

textarea {
    width: 100%;
    height: 70px;
    background: #121212;
    border: 1px solid #333;
    color: var(--accent-green);
    padding: 12px;
    border-radius: 6px;
    resize: none;
    font-family: 'Consolas', monospace;
    font-size: 0.9rem;
}

textarea:focus { outline: none; border-color: var(--accent-green); }

#copyBtn, #connectBtn { width: 100%; margin-top: 10px; }
#copyBtn { background-color: #333; color: #ccc; }
#connectBtn { background-color: var(--accent-green); color: #111; }

.piece {
    cursor: grab;
}

.piece.dragging {
    opacity: 0; 
}

.github-link {
  position: absolute;
  top: 22px;
  right: 22px;
  z-index: 1500;
  display: inline-flex;
  align-items: center;
  gap: 8px;

  background: #fff;
  color: #000;
  text-decoration: none;
  font-weight: 700;
  letter-spacing: 0.5px;
  padding: 8px 10px;
  border-radius: 10px;

  border: 1px solid rgba(0,0,0,0.15);
  backdrop-filter: none;
  transition: all 0.2s ease;
}

.github-link:hover {
  color: #000;
  filter: brightness(0.95);
  transform: translateY(-1px);
}

.github-link:active {
  transform: translateY(0);
}

.github-icon {
  width: 18px;
  height: 18px;
  object-fit: contain;
  display: block;
}

.app-modal {
  width: min(92vw, 420px);
  border: 1px solid #333;
  border-radius: 16px;
  padding: 0;
  background: #1e1e1e;
  color: #fff;
  box-shadow: 0 20px 60px rgba(0,0,0,0.8);
  position: fixed;
  inset: 0;
  margin: auto;
  max-height: 90vh;
  overflow: auto;
}


.app-modal::backdrop {
  background: rgba(0,0,0,0.72);
}

.app-modal__form {
  padding: 18px 18px 14px;
}

.app-modal__title {
  font-size: 1.15rem;
  font-weight: 800;
  margin-bottom: 10px;
}

.app-modal__message {
  font-size: 0.95rem;
  opacity: 0.95;
  line-height: 1.35;
  white-space: pre-wrap;
}

.app-modal__input {
  width: 100%;
  margin-top: 12px;
  height: 42px;
  background: #121212;
  border: 1px solid #333;
  color: #fff;
  padding: 10px 12px;
  border-radius: 10px;
  font-size: 0.95rem;
}

.app-modal__choices {
  display: none;
  gap: 10px;
  margin-top: 12px;
  flex-wrap: wrap;
}

.app-modal__buttons {
  display: flex;
  gap: 10px;
  justify-content: flex-end;
  margin-top: 14px;
}

.app-modal__btn {
  padding: 10px 14px;
  border-radius: 10px;
  font-weight: 800;
  border: none;
  cursor: pointer;
  text-transform: none;
}

.app-modal__btn--ghost {
  background: rgba(255,255,255,0.08);
  color: #fff;
  border: 1px solid rgba(255,255,255,0.12);
}

/* Use your existing accent green */
.app-modal__btn:not(.app-modal__btn--ghost) {
  background: var(--accent-green);
  color: #111;
}

/* Mobile: make control buttons more compact without affecting desktop */
@media (max-width: 600px) {
  .side-panel {
    width: 92vw;
    padding: 12px;
    gap: 10px;
  }

  .controls {
    flex-wrap: wrap;
    justify-content: center;
    gap: 8px;
  }

  .controls button {
    padding: 10px 12px;
    font-size: 0.8rem;
    border-radius: 10px;
    flex: 1 1 45%;
    min-width: 140px;
  }

  .github-link {
    top: 12px;
    right: 12px;
    padding: 6px 8px;
    font-size: 0.9rem;
  }

  .github-icon {
    width: 16px;
    height: 16px;
  }
}