/* ============================================
   plant.css — 种亿棵树 · 种树区域样式
   trees.center
   ============================================ */

:root {
  --plant-deep-green: #0a1f0a;
  --plant-night-blue: #0a0e2a;
  --plant-glow-green: #4ade80;
  --plant-gold: #c9a84c;
  --plant-pink: #f9a8d4;
  --plant-white: #f0fdf4;
}

/* ---- 种树区域整体布局 ---- */
#plant {
  position: relative;
  width: 100%;
  min-height: 100vh;
  background: linear-gradient(180deg, var(--plant-night-blue) 0%, #0d1a0d 60%, var(--plant-deep-green) 100%);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* ---- 星空背景粒子层 ---- */
#plant::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(1px 1px at 10% 20%, rgba(255,255,255,0.8) 50%, transparent 100%),
    radial-gradient(1px 1px at 30% 50%, rgba(255,255,255,0.6) 50%, transparent 100%),
    radial-gradient(1.5px 1.5px at 50% 10%, rgba(255,255,255,0.9) 50%, transparent 100%),
    radial-gradient(1px 1px at 70% 40%, rgba(255,255,255,0.5) 50%, transparent 100%),
    radial-gradient(1px 1px at 90% 70%, rgba(255,255,255,0.7) 50%, transparent 100%),
    radial-gradient(1.5px 1.5px at 15% 80%, rgba(255,255,255,0.6) 50%, transparent 100%),
    radial-gradient(1px 1px at 45% 90%, rgba(255,255,255,0.4) 50%, transparent 100%),
    radial-gradient(1px 1px at 80% 15%, rgba(255,255,255,0.7) 50%, transparent 100%),
    radial-gradient(1.5px 1.5px at 60% 65%, rgba(255,255,255,0.5) 50%, transparent 100%),
    radial-gradient(1px 1px at 25% 35%, rgba(255,255,255,0.8) 50%, transparent 100%);
  pointer-events: none;
  z-index: 0;
  animation: starTwinkle 4s ease-in-out infinite alternate;
}

@keyframes starTwinkle {
  0% { opacity: 0.6; }
  100% { opacity: 1; }
}

/* ---- 标题区 ---- */
.plant-header {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 3rem 1rem 1rem;
}

.plant-header h2 {
  font-size: 2rem;
  color: var(--plant-glow-green);
  text-shadow: 0 0 20px rgba(74, 222, 128, 0.4);
  margin: 0 0 0.5rem;
  font-weight: 700;
  letter-spacing: 0.05em;
}

.plant-header p {
  color: rgba(240, 253, 244, 0.6);
  font-size: 0.95rem;
  margin: 0;
}

/* ---- 全球计数器 ---- */
.plant-counter {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  margin: 1.5rem 0;
  padding: 0.75rem 2rem;
  background: rgba(10, 31, 10, 0.6);
  border: 1px solid rgba(74, 222, 128, 0.2);
  border-radius: 999px;
  backdrop-filter: blur(10px);
}

.plant-counter .counter-label {
  color: rgba(240, 253, 244, 0.7);
  font-size: 0.9rem;
}

.plant-counter .counter-number {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--plant-glow-green);
  font-variant-numeric: tabular-nums;
  text-shadow: 0 0 12px rgba(74, 222, 128, 0.5);
  min-width: 3ch;
  text-align: center;
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.plant-counter .counter-number.bump {
  transform: scale(1.3);
}

.plant-counter .counter-unit {
  color: rgba(240, 253, 244, 0.5);
  font-size: 0.85rem;
}

/* ---- 画布容器 ---- */
#plant-canvas-wrap {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 900px;
  aspect-ratio: 3 / 2;
  margin: 0 auto;
  cursor: pointer;
  touch-action: none;
  -webkit-user-select: none;
  user-select: none;
}

#plant-canvas-wrap canvas {
  width: 100%;
  height: 100%;
  display: block;
  border-radius: 12px;
}

/* ---- 长按进度环 ---- */
.press-ring {
  position: fixed;
  pointer-events: none;
  z-index: 100;
  width: 70px;
  height: 70px;
  transform: translate(-50%, -50%);
  opacity: 0;
  transition: opacity 0.15s ease;
}

.press-ring.active {
  opacity: 1;
}

.press-ring svg {
  width: 100%;
  height: 100%;
  transform: rotate(-90deg);
}

.press-ring .ring-bg {
  fill: none;
  stroke: rgba(74, 222, 128, 0.15);
  stroke-width: 3;
}

.press-ring .ring-progress {
  fill: none;
  stroke: var(--plant-glow-green);
  stroke-width: 3;
  stroke-linecap: round;
  stroke-dasharray: 188.5; /* 2 * PI * 30 */
  stroke-dashoffset: 188.5;
  transition: stroke-dashoffset 0.05s linear;
  filter: drop-shadow(0 0 6px rgba(74, 222, 128, 0.6));
}

.press-ring .ring-center {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  color: var(--plant-glow-green);
  text-shadow: 0 0 10px rgba(74, 222, 128, 0.5);
}

/* ---- 长按提示 ---- */
.press-hint {
  position: relative;
  z-index: 2;
  text-align: center;
  color: rgba(240, 253, 244, 0.4);
  font-size: 0.85rem;
  margin-top: 1rem;
  animation: hintPulse 2s ease-in-out infinite;
}

@keyframes hintPulse {
  0%, 100% { opacity: 0.4; }
  50% { opacity: 0.8; }
}

/* ---- Toast 提示条 ---- */
.plant-toast {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  z-index: 1000;
  padding: 0.85rem 1.8rem;
  background: rgba(10, 31, 10, 0.9);
  border: 1px solid rgba(74, 222, 128, 0.3);
  border-radius: 999px;
  color: var(--plant-glow-green);
  font-size: 0.95rem;
  font-weight: 600;
  backdrop-filter: blur(12px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4), 0 0 20px rgba(74, 222, 128, 0.15);
  white-space: nowrap;
  opacity: 0;
  transition: all 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
  pointer-events: none;
}

.plant-toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ---- 留言浮层 ---- */
.message-overlay {
  position: fixed;
  inset: 0;
  z-index: 500;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(6px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.35s ease;
}

.message-overlay.show {
  opacity: 1;
  pointer-events: auto;
}

.message-box {
  background: linear-gradient(145deg, #0d2818, #0a1f0a);
  border: 1px solid rgba(74, 222, 128, 0.25);
  border-radius: 20px;
  padding: 2rem;
  width: 90%;
  max-width: 360px;
  text-align: center;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5), 0 0 40px rgba(74, 222, 128, 0.1);
  transform: scale(0.85) translateY(20px);
  transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.message-overlay.show .message-box {
  transform: scale(1) translateY(0);
}

.message-box h3 {
  color: var(--plant-glow-green);
  font-size: 1.2rem;
  margin: 0 0 0.5rem;
}

.message-box .msg-desc {
  color: rgba(240, 253, 244, 0.5);
  font-size: 0.82rem;
  margin: 0 0 1.2rem;
}

.message-box input {
  width: 100%;
  padding: 0.75rem 1rem;
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid rgba(74, 222, 128, 0.2);
  border-radius: 12px;
  color: var(--plant-white);
  font-size: 0.95rem;
  outline: none;
  transition: border-color 0.2s;
  box-sizing: border-box;
}

.message-box input:focus {
  border-color: var(--plant-glow-green);
}

.message-box input::placeholder {
  color: rgba(240, 253, 244, 0.25);
}

.message-box .msg-actions {
  display: flex;
  gap: 0.75rem;
  margin-top: 1.2rem;
}

.message-box .msg-btn {
  flex: 1;
  padding: 0.7rem;
  border: none;
  border-radius: 12px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}

.message-box .msg-btn.primary {
  background: var(--plant-glow-green);
  color: var(--plant-deep-green);
}

.message-box .msg-btn.primary:hover {
  background: #6ee7a0;
  box-shadow: 0 0 20px rgba(74, 222, 128, 0.3);
}

.message-box .msg-btn.secondary {
  background: rgba(255, 255, 255, 0.08);
  color: rgba(240, 253, 244, 0.6);
}

.message-box .msg-btn.secondary:hover {
  background: rgba(255, 255, 255, 0.14);
}

/* 查看留言浮层 */
.message-view {
  background: linear-gradient(145deg, #0d2818, #0a1f0a);
  border: 1px solid rgba(74, 222, 128, 0.25);
  border-radius: 20px;
  padding: 1.8rem;
  width: 90%;
  max-width: 320px;
  text-align: center;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
  transform: scale(0.85);
  transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.message-overlay.show .message-view {
  transform: scale(1);
}

.message-view .tree-icon {
  font-size: 2.5rem;
  margin-bottom: 0.5rem;
}

.message-view .msg-text {
  color: var(--plant-white);
  font-size: 1.05rem;
  line-height: 1.6;
  margin: 0.8rem 0;
  font-style: italic;
}

.message-view .msg-time {
  color: rgba(240, 253, 244, 0.35);
  font-size: 0.78rem;
}

.message-view .msg-close {
  margin-top: 1rem;
  padding: 0.55rem 1.5rem;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(74, 222, 128, 0.15);
  border-radius: 999px;
  color: rgba(240, 253, 244, 0.6);
  font-size: 0.85rem;
  cursor: pointer;
  transition: all 0.2s;
}

.message-view .msg-close:hover {
  background: rgba(255, 255, 255, 0.15);
}

/* ---- 分享弹窗 ---- */
.share-modal {
  position: fixed;
  inset: 0;
  z-index: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(8px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.35s ease;
}

.share-modal.show {
  opacity: 1;
  pointer-events: auto;
}

.share-card-wrap {
  background: linear-gradient(145deg, #0d2818, #071510);
  border: 1px solid rgba(74, 222, 128, 0.2);
  border-radius: 24px;
  padding: 1.5rem;
  text-align: center;
  max-width: 420px;
  width: 90%;
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.6);
  transform: scale(0.85) translateY(30px);
  transition: transform 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.share-modal.show .share-card-wrap {
  transform: scale(1) translateY(0);
}

.share-card-wrap canvas {
  width: 100%;
  border-radius: 16px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

.share-card-wrap .share-actions {
  display: flex;
  gap: 0.75rem;
  margin-top: 1.2rem;
}

.share-card-wrap .share-btn {
  flex: 1;
  padding: 0.75rem;
  border: none;
  border-radius: 14px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}

.share-card-wrap .share-btn.download {
  background: var(--plant-glow-green);
  color: var(--plant-deep-green);
}

.share-card-wrap .share-btn.download:hover {
  background: #6ee7a0;
  box-shadow: 0 0 20px rgba(74, 222, 128, 0.3);
}

.share-card-wrap .share-btn.close {
  background: rgba(255, 255, 255, 0.08);
  color: rgba(240, 253, 244, 0.6);
}

.share-card-wrap .share-btn.close:hover {
  background: rgba(255, 255, 255, 0.14);
}

/* ---- 欢迎动画（第1棵树） ---- */
.welcome-flash {
  position: fixed;
  inset: 0;
  z-index: 999;
  background: radial-gradient(circle at center, rgba(74, 222, 128, 0.25), transparent 70%);
  pointer-events: none;
  animation: welcomePulse 1.5s ease-out forwards;
}

@keyframes welcomePulse {
  0% { opacity: 0; transform: scale(0.5); }
  30% { opacity: 1; transform: scale(1); }
  100% { opacity: 0; transform: scale(1.5); }
}

/* ---- 响应式 ---- */
@media (max-width: 768px) {
  #plant {
    min-height: 100svh;
  }

  .plant-header {
    padding: 2rem 1rem 0.5rem;
  }

  .plant-header h2 {
    font-size: 1.5rem;
  }

  #plant-canvas-wrap {
    width: 100%;
    max-width: 100%;
    aspect-ratio: auto;
    min-height: 80vh;
    border-radius: 0;
  }

  #plant-canvas-wrap canvas {
    border-radius: 0;
  }

  .plant-counter {
    padding: 0.6rem 1.5rem;
  }

  .plant-counter .counter-number {
    font-size: 1.3rem;
  }

  .press-ring {
    width: 60px;
    height: 60px;
  }

  .plant-toast {
    font-size: 0.85rem;
    padding: 0.7rem 1.4rem;
    bottom: 1.5rem;
  }
}

@media (max-width: 380px) {
  .plant-header h2 {
    font-size: 1.3rem;
  }

  .message-box {
    padding: 1.5rem;
  }
}