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

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: linear-gradient(135deg, #1a1a2e, #16213e, #0f3460);
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  color: #fff;
}

.container {
  text-align: center;
  padding: 40px 30px;
  max-width: 600px;
  width: 100%;
}

h1 {
  font-size: 2.5rem;
  margin-bottom: 8px;
  text-shadow: 0 0 20px rgba(255, 255, 255, 0.3);
}

.subtitle {
  font-size: 1.1rem;
  color: #aaa;
  margin-bottom: 40px;
}

.balls-container {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 12px;
  margin-bottom: 36px;
  flex-wrap: wrap;
}

.ball {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 1.5rem;
  font-weight: 700;
  color: #fff;
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
  box-shadow: inset 0 -4px 6px rgba(0, 0, 0, 0.25), 0 4px 12px rgba(0, 0, 0, 0.3);
  transition: transform 0.3s, opacity 0.3s;
}

.ball.placeholder {
  background: #333;
  color: #666;
  box-shadow: none;
}

.ball.pop {
  animation: popIn 0.4s ease-out;
}

@keyframes popIn {
  0% { transform: scale(0); opacity: 0; }
  60% { transform: scale(1.2); }
  100% { transform: scale(1); opacity: 1; }
}

/* 번호 범위별 색상 */
.ball.range-1 { background: linear-gradient(145deg, #fbc531, #e1b12c); }
.ball.range-2 { background: linear-gradient(145deg, #4cd137, #44bd32); }
.ball.range-3 { background: linear-gradient(145deg, #e84118, #c23616); }
.ball.range-4 { background: linear-gradient(145deg, #9c88ff, #8c7ae6); }
.ball.range-5 { background: linear-gradient(145deg, #00a8ff, #0097e6); }

.bonus-separator {
  font-size: 2rem;
  font-weight: 700;
  color: #555;
  margin: 0 4px;
}

button {
  background: linear-gradient(145deg, #e84118, #c23616);
  color: #fff;
  border: none;
  padding: 16px 48px;
  font-size: 1.2rem;
  font-weight: 700;
  border-radius: 50px;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
  box-shadow: 0 4px 16px rgba(232, 65, 24, 0.4);
}

button:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(232, 65, 24, 0.6);
}

button:active {
  transform: translateY(0);
}

button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

.history {
  margin-top: 48px;
  text-align: left;
}

.history h2 {
  font-size: 1.2rem;
  margin-bottom: 16px;
  color: #aaa;
  text-align: center;
}

.history ul {
  list-style: none;
  max-height: 240px;
  overflow-y: auto;
}

.history li {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  margin-bottom: 8px;
  background: rgba(255, 255, 255, 0.06);
  border-radius: 12px;
  font-size: 0.9rem;
  flex-wrap: wrap;
}

.history li .round {
  color: #888;
  min-width: 40px;
}

.history .mini-ball {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: inline-flex;
  justify-content: center;
  align-items: center;
  font-size: 0.8rem;
  font-weight: 700;
  color: #fff;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

.history .mini-sep {
  color: #555;
  font-weight: 700;
}

/* 제휴 문의 폼 */
.inquiry-section {
  margin-top: 60px;
  padding-top: 40px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.inquiry-section h2 {
  font-size: 1.5rem;
  margin-bottom: 8px;
}

.inquiry-desc {
  color: #aaa;
  font-size: 0.95rem;
  margin-bottom: 24px;
}

.inquiry-form {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.inquiry-form input,
.inquiry-form textarea {
  width: 100%;
  padding: 14px 18px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
  font-size: 1rem;
  font-family: inherit;
  outline: none;
  transition: border-color 0.2s;
}

.inquiry-form input::placeholder,
.inquiry-form textarea::placeholder {
  color: #777;
}

.inquiry-form input:focus,
.inquiry-form textarea:focus {
  border-color: rgba(255, 255, 255, 0.4);
}

.inquiry-form textarea {
  resize: vertical;
}

.submit-btn {
  background: linear-gradient(145deg, #0097e6, #0078b8);
  box-shadow: 0 4px 16px rgba(0, 151, 230, 0.4);
  margin-top: 4px;
}

.submit-btn:hover {
  box-shadow: 0 6px 24px rgba(0, 151, 230, 0.6);
}