/* ============================================
   Lucky-v3 重新设计样式
   深色科技感 + 柔和渐变 + 简洁圆角按钮
   ============================================ */

:root {
  --bg:        #080810;
  --surface:   #0f0f1a;
  --surface2:  #16162a;
  --accent:    #7c6cfc;
  --accent2:   #fc6cef;
  --gold:      #ffc840;
  --coral:     #ff6b8a;
  --text:      #e8e8f4;
  --muted:     #6868a0;
  --border:    rgba(124,108,252,.18);
}

/* ===== 全局 ===== */
*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Noto Sans SC', 'PingFang SC', system-ui, sans-serif;
  -webkit-tap-highlight-color: transparent;
  overflow-x: hidden;
  min-height: 100dvh;
}

/* ===== 模块容器 ===== */
.module {
  display: none;
  flex-direction: column;
  align-items: center;
}
.module.active { display: flex; }

/* ===== 粒子背景 ===== */
#bg-canvas {
  position: fixed; inset: 0; z-index: 0;
  pointer-events: all; cursor: crosshair;
}

/* ===== 内容层 ===== */
.container, main {
  position: relative; z-index: 1;
  max-width: 480px; margin: 0 auto;
  padding-bottom: 80px;
}

/* ===== Tab 导航 ===== */
.tab-bar {
  display: flex; gap: 0;
  background: rgba(8,8,16,.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 50;
}

.tab-btn {
  flex: 1; padding: 14px 4px 12px;
  border: none; background: transparent;
  color: var(--muted);
  font-size: 12px; font-weight: 600;
  letter-spacing: .04em;
  cursor: pointer;
  position: relative;
  transition: color .2s;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
}

.tab-btn:hover { color: var(--text); }

.tab-btn.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.tab-btn .tab-icon {
  display: block;
  font-size: 18px;
  margin-bottom: 3px;
  filter: grayscale(1) opacity(.55);
  transition: filter .2s;
}
.tab-btn.active .tab-icon,
.tab-btn:hover .tab-icon {
  filter: none;
}

/* ===== 模块内容 ===== */
.module-section {
  padding: 24px 20px;
}

.module-title {
  font-size: 13px; font-weight: 700;
  letter-spacing: .1em; text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 20px;
}

/* ===== 按钮基底 ===== */
.btn {
  display: inline-flex; align-items: center;
  justify-content: center; gap: 8px;
  padding: 13px 24px;
  font-family: inherit; font-size: 14px; font-weight: 700;
  letter-spacing: .06em;
  border: none; outline: none; cursor: pointer;
  background: var(--accent); color: #fff;
  border-radius: 12px;
  transition: transform .15s, box-shadow .2s, filter .15s;
  -webkit-tap-highlight-color: transparent;
}

.btn:hover { transform: translateY(-1px); box-shadow: 0 6px 20px rgba(124,108,252,.45); }
.btn:active { transform: scale(.96); }
.btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

/* 主要动作按钮（金色） */
.btn-primary { background: var(--gold); color: #1a1200; }
.btn-primary:hover { box-shadow: 0 6px 20px rgba(255,200,64,.4); }

/* 次要按钮 */
.btn-secondary { background: var(--surface2); color: var(--text); border: 1px solid var(--border); }
.btn-secondary:hover { border-color: var(--accent); color: var(--accent); box-shadow: none; }

/* 全宽按钮 */
.btn-block { width: 100%; }

/* 小按钮 */
.btn-sm { padding: 8px 16px; font-size: 12px; border-radius: 8px; }

/* ===== 转盘 ===== */
.wheel-container {
  position: relative;
  display: flex; flex-direction: column; align-items: center; gap: 20px;
  padding-top: 16px;
}

.wheel-wrapper {
  position: relative;
  width: min(88vw, 380px);
  height: min(88vw, 380px);
}

#wheelCanvas {
  width: 100%; height: 100%; border-radius: 50%;
  box-shadow: 0 0 0 5px rgba(124,108,252,.25), 0 0 50px rgba(124,108,252,.12);
}

.wheel-center-btn {
  position: absolute; top: 50%; left: 50%;
  transform: translate(-50%,-50%);
  width: 68px; height: 68px; border-radius: 50%;
  background: linear-gradient(135deg, #7c6cfc, #fc6cef);
  border: 3px solid rgba(255,255,255,.85);
  box-shadow: 0 4px 18px rgba(124,108,252,.6);
  color: #fff; font-size: 11px; font-weight: 900;
  letter-spacing: .04em; cursor: pointer;
  transition: transform .15s, box-shadow .15s;
  z-index: 10;
}
.wheel-center-btn:hover { transform: translate(-50%,-50%) scale(1.07); box-shadow: 0 6px 24px rgba(124,108,252,.7); }
.wheel-center-btn:active { transform: translate(-50%,-50%) scale(.95); }

.wheel-pointer {
  position: absolute; top: -10px; left: 50%;
  transform: translateX(-50%);
  width: 0; height: 0;
  border-left: 12px solid transparent;
  border-right: 12px solid transparent;
  border-top: 24px solid var(--accent);
  filter: drop-shadow(0 2px 6px rgba(124,108,252,.6));
  z-index: 11;
}

/* ===== 抽签 ===== */
.ball-display {
  display: flex; align-items: center; justify-content: center;
  height: 120px; font-size: 72px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 16px;
  margin-bottom: 16px;
  letter-spacing: .1em;
}

/* ===== 粒子爆炸 ===== */
.explosion-display {
  display: flex; align-items: center; justify-content: center;
  min-height: 200px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 16px;
  margin-bottom: 16px;
  font-size: 80px;
}

/* ===== 老虎机 ===== */
.slot-machine {
  display: grid; grid-template-columns: repeat(3,1fr); gap: 8px;
  padding: 16px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 16px;
  margin-bottom: 12px;
}

.slot-col {
  height: 80px;
  display: flex; align-items: center; justify-content: center;
  font-size: 44px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
}

/* ===== 翻牌 ===== */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
  gap: 12px;
  perspective: 800px;
}

.flip-card {
  height: 180px; cursor: pointer;
  transform-style: preserve-3d;
  transition: transform .55s cubic-bezier(.4,0,.2,1);
}
.flip-card.flipped { transform: rotateY(180deg); }

.flip-card-front, .flip-card-back {
  position: absolute; inset: 0;
  backface-visibility: hidden;
  -webkit-backdrop-filter: blur(12px);
  border-radius: 12px;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  font-size: 44px;
  border: 1px solid var(--border);
}

.flip-card-front {
  background: var(--surface2);
  color: var(--accent);
}
.flip-card-back {
  background: linear-gradient(135deg, #1a1040, #0d0820);
  color: #fff;
  transform: rotateY(180deg);
  font-size: 28px;
}

/* ===== 结果特效层 ===== */
.result-overlay {
  position: fixed; inset: 0; z-index: 200;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  pointer-events: none;
}
.result-overlay.show { pointer-events: all; }

.effect-canvas {
  position: fixed; inset: 0; z-index: 201;
  pointer-events: none; display: block;
}

/* ===== 设置栏 ===== */
.settings-bar {
  display: flex; gap: 8px; padding: 10px 16px;
  justify-content: flex-end;
  background: transparent;
}

.settings-btn {
  padding: 6px 14px;
  font-size: 11px; font-weight: 700; letter-spacing: .05em;
  border: 1px solid var(--border); border-radius: 20px;
  background: rgba(15,15,26,.7);
  color: var(--muted); cursor: pointer;
  backdrop-filter: blur(8px);
  transition: color .2s, border-color .2s;
}
.settings-btn:hover { color: var(--accent); border-color: var(--accent); }

/* ===== Admin ===== */
.admin-bar {
  position: fixed; bottom: 0; left: 0; right: 0;
  padding: 12px 16px;
  background: rgba(8,8,16,.9);
  backdrop-filter: blur(12px);
  border-top: 1px solid var(--border);
  display: flex; gap: 8px; align-items: center;
  z-index: 100;
}

.admin-input {
  flex: 1;
  padding: 10px 14px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text); font-family: inherit; font-size: 13px;
  outline: none;
  transition: border-color .2s;
}
.admin-input:focus { border-color: var(--accent); }
.admin-input::placeholder { color: var(--muted); }

/* ===== 辅助 ===== */
.text-accent { color: var(--accent); }
.text-gold { color: var(--gold); }
.text-coral { color: var(--coral); }
.glow { text-shadow: 0 0 16px rgba(124,108,252,.6); }

/* iOS兼容 */
@supports (-webkit-touch-callout: none) {
  .btn, button { -webkit-appearance: none; }
}