@import url("https://fonts.googleapis.com/css2?family=Quicksand:wght@500;700;900&display=swap");

html, body {
    font-family: 'Quicksand', sans-serif;
    background-color: #fff7ed;
    margin: 0;
    overflow: hidden;
    user-select: none;
    -webkit-user-select: none;
    touch-action: manipulation;
    -webkit-touch-callout: none;
    overscroll-behavior: none;
}

/* --- BÀN CỜ --- */
#board-container {
  /* Kích thước linh hoạt thông minh */
  width: min(95vw, 55vh, 500px);
  height: min(95vw, 55vh, 500px);

  margin: 0 auto;
  position: relative;
  /* border-radius: 12px; */
  /* box-shadow: 0 15px 35px rgba(0,0,0,0.2); */
  /* background: #deb887;  */
  /* Màu gỗ lót dưới */
  transition: all 0.3s;
  z-index: 10;
  touch-action: none;
}



/* --- HIỆU ỨNG CHIẾU TƯỚNG --- */
.danger-zone {
  box-shadow: 0 0 0 8px rgba(239, 68, 68, 0.7) !important;
  animation: shake 0.5s;
}

.king-alarm {
  animation: king-blink 0.5s infinite alternate !important;
  filter: drop-shadow(0 0 8px rgba(255, 0, 0, 0.9))
    drop-shadow(0 0 15px rgba(255, 0, 0, 0.6));
}

@keyframes king-blink {
  0% {
    opacity: 1;
    filter: drop-shadow(0 0 5px rgba(255, 0, 0, 0.8));
  }
  100% {
    opacity: 0.3;
    filter: drop-shadow(0 0 20px rgba(255, 0, 0, 1));
  }
}

@keyframes shake {
  0%,
  100% {
    transform: translateX(0);
  }
  25% {
    transform: translateX(-5px);
  }
  75% {
    transform: translateX(5px);
  }
}

/* --- OVERLAY CHUNG (THẮNG/THUA/HÒA) --- */
#game-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6); /* Nền tối mờ nhẹ hơn để vẫn thấy bàn cờ */
  z-index: 99999;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  pointer-events: none;
  animation: popIn 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.overlay-text {
  font-size: 4rem; /* Chữ to hơn */
  font-weight: 900;
  text-align: center;
  line-height: 1.1;
  padding: 30px;
  border-radius: 30px;

  /* Tạo viền chữ dày màu trắng */
  -webkit-text-stroke: 3px white;
  paint-order: stroke fill;

  /* Đổ bóng để tách biệt hẳn với nền */
  text-shadow: 4px 4px 0px #fff, 0px 0px 30px rgba(0, 0, 0, 0.5);

  /* Font dễ thương */
  font-family: "Quicksand", sans-serif;
  transform: rotate(-5deg); /* Nghiêng nhẹ cho vui mắt */
}

@keyframes popIn {
  0% {
    transform: scale(0) rotate(-15deg);
    opacity: 0;
  }
  70% {
    transform: scale(1.2) rotate(5deg);
  }
  100% {
    transform: scale(1) rotate(-5deg);
    opacity: 1;
  }
}

/* --- UI ELEMENTS --- */
.btn-control {
  transition: all 0.2s;
  border-bottom: 4px solid rgba(0, 0, 0, 0.15);
}
.btn-control:active {
  transform: translateY(2px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.15);
}

/* Modal Setup */
#setup-modal {
  position: fixed;
  inset: 0;
  background: rgba(255, 247, 237, 0.95);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-box {
  background: white;
  width: 90%;
  max-width: 380px;
  padding: 30px 25px;
  border-radius: 24px;
  box-shadow: 0 20px 50px rgba(234, 88, 12, 0.25);
  text-align: center;
  border: 2px solid #fdba74;
  position: relative;
}

.close-btn {
  position: absolute;
  top: 10px;
  right: 10px;
  width: 36px;
  height: 36px;
  background: #f3f4f6;
  border-radius: 50%;
  border: none;
  font-size: 20px;
  font-weight: bold;
  color: #6b7280;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
}
.close-btn:hover {
  background: #e5e7eb;
  color: #ef4444;
}

/* Flat Select */
.flat-select-wrapper {
  position: relative;
  width: 100%;
}
.flat-select-wrapper::after {
  content: "▼";
  font-size: 12px;
  color: #ea580c;
  position: absolute;
  right: 15px;
  top: 50%;
  transform: translateY(-50%);
  pointer-events: none;
}
select.flat-select {
  width: 100%;
  appearance: none;
  -webkit-appearance: none;
  padding: 15px;
  border-radius: 12px;
  background-color: #fff7ed;
  border: 2px solid #fed7aa;
  font-family: "Quicksand", sans-serif;
  font-weight: 700;
  font-size: 16px;
  color: #c2410c;
  outline: none;
}
select.flat-select:focus {
  border-color: #ea580c;
}

.label-text {
  font-weight: 900;
  color: #ea580c;
  margin-bottom: 10px;
  display: block;
  text-align: left;
}
.setup-group {
  margin-bottom: 25px;
}

/* Chọn màu quân */
.color-options {
  display: flex;
  gap: 12px;
  justify-content: center;
}
.color-btn {
  flex: 1;
  padding: 12px;
  border-radius: 12px;
  border: 2px solid #e5e7eb;
  background: white;
  font-weight: bold;
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}
.color-btn.selected {
  border-color: #ea580c;
  background: #fff7ed;
  color: #ea580c;
  box-shadow: inset 0 0 0 2px #ea580c;
  transform: scale(1.05);
}

.btn-start {
  width: 100%;
  background: #ea580c;
  color: white;
  font-weight: 900;
  padding: 16px;
  border-radius: 16px;
  font-size: 18px;
  border: none;
  box-shadow: 0 4px 0 #c2410c;
  transition: transform 0.1s;
}
.btn-start:active {
  transform: translateY(4px);
  box-shadow: none;
}

/* Victory celebration special effects */
.victory-special .overlay-text {
  animation: victory-pulse 1s infinite alternate;
  text-shadow: 0 0 20px rgba(34, 197, 94, 0.7);
}

@keyframes victory-pulse {
  0% { transform: scale(1); }
  100% { transform: scale(1.05); }
}