@import url("https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@300;400;700&family=Pacifico&display=swap");

:root {
  --primary-color: #ff1744;
  --secondary-color: #ff4081;
  --accent-color: #f50057;
  --bg-gradient-1: #0f0c29;
  --bg-gradient-2: #302b63;
  --bg-gradient-3: #24243e;
  --text-color: #ffffff;
  --glow-color: rgba(255, 23, 68, 0.8);
}

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

body {
  font-family: "Noto Sans SC", sans-serif;
  min-height: 100vh;
  overflow: hidden;
  background: linear-gradient(135deg, var(--bg-gradient-1) 0%, var(--bg-gradient-2) 50%, var(--bg-gradient-3) 100%);
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Canvas 画布 */
#heartCanvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}

/* 爱心中间的名字 */
.center-name {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-family: "Pacifico", "Noto Sans SC", cursive;
  font-size: 4rem;
  font-weight: 700;
  color: #fff;
  text-shadow: 0 0 20px rgba(255, 23, 68, 0.8), 0 0 40px rgba(255, 64, 129, 0.6), 0 0 60px rgba(245, 0, 87, 0.4);
  z-index: 15;
  animation: heartBeatName 1.5s ease-in-out infinite;
  letter-spacing: 5px;
  user-select: none;
  pointer-events: none;
}

@keyframes heartBeatName {
  0%,
  100% {
    transform: translate(-50%, -50%) scale(1);
  }
  10% {
    transform: translate(-50%, -50%) scale(1.15);
  }
  20% {
    transform: translate(-50%, -50%) scale(1);
  }
  30% {
    transform: translate(-50%, -50%) scale(1.15);
  }
  40%,
  100% {
    transform: translate(-50%, -50%) scale(1);
  }
}

/* 文字内容 */
.text-content {
  position: fixed;
  bottom: 200px;
  left: 50%;
  transform: translateX(-50%);
  text-align: center;
  color: var(--text-color);
  z-index: 10;
  animation: fadeInUp 1s ease-out;
}

.love-title {
  font-family: "Pacifico", "Noto Sans SC", cursive;
  font-size: 3.5rem;
  font-weight: 700;
  margin-bottom: 20px;
  background: linear-gradient(135deg, #ff1744, #ff4081, #f50057);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  filter: drop-shadow(0 0 20px rgba(255, 23, 68, 0.6));
  animation: titleGlow 2s ease-in-out infinite;
}

.love-message {
  font-size: 1.5rem;
  font-weight: 300;
  margin-bottom: 30px;
  opacity: 0.9;
  letter-spacing: 2px;
  text-shadow: 0 0 10px rgba(255, 255, 255, 0.3);
}

.date-display {
  font-size: 1.2rem;
  opacity: 0.7;
  font-weight: 300;
  letter-spacing: 1px;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateX(-50%) translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
  }
}

@keyframes titleGlow {
  0%,
  100% {
    filter: drop-shadow(0 0 10px rgba(255, 23, 68, 0.5));
  }
  50% {
    filter: drop-shadow(0 0 30px rgba(255, 64, 129, 0.9));
  }
}

/* 浮动的小心形 */
.floating-hearts {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 5;
}

.floating-heart {
  position: absolute;
  font-size: 20px;
  animation: floatHeart 8s linear infinite;
  opacity: 0;
}

@keyframes floatHeart {
  0% {
    transform: translateY(100vh) rotate(0deg);
    opacity: 0;
  }
  10% {
    opacity: 1;
  }
  90% {
    opacity: 1;
  }
  100% {
    transform: translateY(-100px) rotate(360deg);
    opacity: 0;
  }
}

/* 控制按钮 */
.controls {
  position: fixed;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 20px;
  z-index: 100;
}

.control-btn {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 15px 30px;
  background: rgba(255, 255, 255, 0.1);
  border: 2px solid rgba(255, 255, 255, 0.2);
  border-radius: 50px;
  color: var(--text-color);
  font-size: 1rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s ease;
  backdrop-filter: blur(10px);
  font-family: "Noto Sans SC", sans-serif;
}

.control-btn:hover {
  background: rgba(255, 23, 68, 0.3);
  border-color: var(--primary-color);
  transform: translateY(-3px);
  box-shadow: 0 10px 30px rgba(255, 23, 68, 0.4);
}

.control-btn:active {
  transform: translateY(-1px);
}

.btn-icon {
  font-size: 1.5rem;
}

.btn-text {
  font-size: 1rem;
}

/* 响应式设计 - 平板 */
@media (max-width: 768px) {
  .center-name {
    font-size: 3rem;
  }

  .text-content {
    bottom: 180px;
    padding: 0 20px;
    width: 100%;
    box-sizing: border-box;
  }

  .love-title {
    font-size: 2rem;
    margin-bottom: 15px;
  }

  .love-message {
    font-size: 1rem;
    margin-bottom: 20px;
    letter-spacing: 1px;
  }

  .date-display {
    font-size: 0.9rem;
  }

  .controls {
    bottom: 30px;
    flex-direction: row;
    gap: 10px;
    padding: 0 15px;
    width: 100%;
    box-sizing: border-box;
    justify-content: center;
    flex-wrap: wrap;
  }

  .control-btn {
    padding: 12px 20px;
    font-size: 0.85rem;
    flex: 0 0 auto;
    min-width: 90px;
  }

  .btn-icon {
    font-size: 1.2rem;
  }

  .btn-text {
    font-size: 0.85rem;
  }
}

/* 响应式设计 - 手机 */
@media (max-width: 480px) {
  .center-name {
    font-size: 2.5rem;
  }

  .text-content {
    bottom: 25%; /* 大幅上移文字，留出底部空间 */
    width: 100%;
    padding: 0 10px;
  }

  .love-title {
    font-size: 1.8rem;
    margin-bottom: 10px;
  }

  .love-message {
    font-size: 1rem;
    margin-bottom: 10px;
  }

  .date-display {
    font-size: 0.9rem;
  }

  .controls {
    bottom: 30px;
    width: 96%; /* 几乎占满屏幕宽度 */
    left: 2%; /* 简单的居中方式 */
    transform: none; /* 取消原本的居中变换 */

    display: flex;
    flex-direction: row;
    flex-wrap: nowrap !important; /* 强制不换行 */
    gap: 6px; /* 紧凑间距 */
    justify-content: space-between;
    padding: 0;
  }

  .control-btn {
    flex: 1; /* 平分宽度 */
    padding: 8px 0; /* 只要上下padding */
    font-size: 0.85rem;
    min-width: 0; /* 允许压缩 */
    white-space: nowrap; /* 不换行 */
    border-radius: 25px; /* 省空间的圆角 */
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 0; /* 移除可能的默认margin */
  }

  .control-btn .btn-icon {
    font-size: 1rem;
    margin-right: 4px;
  }

  .control-btn .btn-text {
    font-size: 0.85rem;
  }
}

/* 横屏模式优化 */
@media (max-height: 600px) and (orientation: landscape) {
  .center-name {
    font-size: 2rem;
  }

  .text-content {
    bottom: 100px;
  }

  .love-title {
    font-size: 1.5rem;
    margin-bottom: 10px;
  }

  .love-message {
    font-size: 0.9rem;
    margin-bottom: 10px;
  }

  .date-display {
    font-size: 0.8rem;
  }

  .controls {
    bottom: 15px;
    gap: 8px;
  }

  .control-btn {
    padding: 8px 16px;
  }
}

/* 颜色主题变化 */
.theme-pink {
  --primary-color: #ff1744;
  --secondary-color: #ff4081;
  --accent-color: #f50057;
}

.theme-purple {
  --primary-color: #9c27b0;
  --secondary-color: #ba68c8;
  --accent-color: #7b1fa2;
}

.theme-blue {
  --primary-color: #2196f3;
  --secondary-color: #64b5f6;
  --accent-color: #1976d2;
}

.theme-gold {
  --primary-color: #ffd700;
  --secondary-color: #ffed4e;
  --accent-color: #ffc107;
}