/* ================= 球球追踪 · 样式（亮色主题，与合集入口同审美） ================= */
:root {
  --bg-0: #eef1f8;
  --bg-1: #f7f9fd;
  --card: #ffffff;
  --card-border: #e4e9f2;
  --txt: #1e293b;
  --txt-dim: #64748b;
  --accent: #0d9488;
  --accent-soft: rgba(13, 148, 136, .1);
  --accent-2: #7c3aed;
  --danger: #e11d48;
  --gold: #d97706;
  --ball-a: #64748b;
  --ball-b: #94a3b8;
  --target: #f59e0b;
  --ok: #16a34a;
  --shadow: 0 6px 24px rgba(30, 41, 59, .08);
  --radius: 18px;
}

* { margin: 0; padding: 0; box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
[hidden] { display: none !important; }
html, body { height: 100%; }
body {
  font-family: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", system-ui, sans-serif;
  background:
    radial-gradient(900px 600px at 88% -10%, rgba(124, 58, 237, .07), transparent 60%),
    radial-gradient(1100px 700px at 8% -15%, rgba(13, 148, 136, .09), transparent 55%),
    linear-gradient(180deg, var(--bg-1) 0%, var(--bg-0) 100%);
  background-attachment: fixed;
  color: var(--txt);
  overflow-x: hidden;
}
button { font-family: inherit; color: inherit; background: none; border: none; cursor: pointer; }

/* ---------- 屏幕切换 ---------- */
.screen { display: none; min-height: 100vh; min-height: 100dvh; flex-direction: column; align-items: center; padding: 18px 16px 40px; }
.screen.active { display: flex; }
@keyframes screenIn { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }
.screen.active > * { animation: screenIn .3s ease both; }

/* ---------- 主菜单 ---------- */
.home-head { text-align: center; margin: 7vh 0 30px; }
.logo {
  font-size: clamp(2.1rem, 7vw, 3rem);
  letter-spacing: .14em;
  background: linear-gradient(120deg, #0d9488, #0284c7 45%, #7c3aed);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.slogan { color: var(--txt-dim); letter-spacing: .3em; font-size: .8rem; margin-top: 10px; }

.user-line { margin-top: 16px; display: flex; gap: 8px; justify-content: center; align-items: center; flex-wrap: wrap; }
.user-chip {
  display: inline-block; padding: 7px 16px; border-radius: 999px; font-size: .82rem;
  background: var(--card); border: 1px solid var(--card-border); color: var(--txt-dim);
  transition: all .15s;
}
button.user-chip:hover { color: var(--accent); border-color: var(--accent); }
.user-chip.on { color: var(--accent); border-color: rgba(13, 148, 136, .4); background: var(--accent-soft); font-weight: 600; }
.user-chip.dim { cursor: default; }

.menu-cards { display: grid; gap: 14px; width: min(520px, 100%); }
.menu-card {
  display: flex; align-items: center; gap: 16px; text-align: left;
  padding: 18px 20px; border-radius: var(--radius);
  background: var(--card); border: 1px solid var(--card-border);
  box-shadow: var(--shadow);
  transition: transform .15s, border-color .15s, box-shadow .15s;
}
.menu-card:hover, .menu-card:active {
  transform: translateY(-2px);
  border-color: var(--accent);
  box-shadow: 0 10px 30px rgba(13, 148, 136, .14);
}
.mc-icon { font-size: 1.9rem; }
.mc-body { flex: 1; display: flex; flex-direction: column; gap: 3px; }
.mc-body b { font-size: 1.08rem; }
.mc-body small { color: var(--txt-dim); font-size: .82rem; }
.mc-arrow { color: var(--txt-dim); font-size: 1.5rem; }

.home-foot { display: flex; gap: 10px; margin-top: 30px; flex-wrap: wrap; justify-content: center; }
.home-foot button, .home-foot a {
  padding: 10px 16px; border-radius: 999px; font-size: .88rem;
  background: var(--card); border: 1px solid var(--card-border); color: var(--txt-dim);
  transition: all .15s; text-decoration: none; display: inline-flex; align-items: center;
}
.home-foot button:hover, .home-foot a:hover { color: var(--accent); border-color: var(--accent); }

/* ---------- 顶栏 ---------- */
.bar {
  width: min(760px, 100%); display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 18px; gap: 8px;
}
.bar h2 { font-size: 1.15rem; letter-spacing: .08em; }
.btn-back { color: var(--txt-dim); font-size: .95rem; padding: 8px 10px; border-radius: 10px; }
.btn-back:hover { color: var(--txt); background: rgba(30, 41, 59, .06); }
.bar-right { min-width: 64px; text-align: right; color: var(--gold); font-size: .9rem; }
.btn-mini { color: var(--txt-dim); font-size: .9rem; padding: 8px 10px; border-radius: 10px; }
.btn-mini:hover { color: var(--txt); background: rgba(30, 41, 59, .06); }

/* ---------- 按钮 ---------- */
.btn-primary {
  padding: 15px 22px; border-radius: 14px; font-size: 1.05rem; font-weight: 700; letter-spacing: .1em;
  color: #fff;
  background: linear-gradient(120deg, #0d9488, #0284c7);
  box-shadow: 0 8px 20px rgba(13, 148, 136, .3);
  transition: transform .12s, box-shadow .12s, filter .12s;
}
.btn-primary:hover { transform: translateY(-2px); filter: brightness(1.05); }
.btn-primary:active { transform: none; }
.btn-primary:disabled { opacity: .5; cursor: not-allowed; transform: none; }
.btn-ghost {
  padding: 13px 20px; border-radius: 14px; font-size: .95rem;
  background: var(--card); border: 1px solid var(--card-border); color: var(--txt);
  transition: border-color .15s, color .15s;
}
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }

/* ---------- 分段控件（登录 tab 等） ---------- */
.seg { display: flex; flex-wrap: wrap; gap: 8px; }
.seg button {
  padding: 10px 16px; border-radius: 12px; font-size: .92rem;
  background: var(--card); border: 1px solid var(--card-border); color: var(--txt-dim);
  transition: all .15s;
}
.seg button:hover { border-color: #b8c4d8; color: var(--txt); }
.seg button.on {
  background: var(--accent-soft);
  border-color: var(--accent); color: var(--accent);
  font-weight: 600;
}

/* ---------- 游戏界面 ---------- */
#screen-game { padding-bottom: 16px; }
.game-bar { margin-bottom: 6px; }
.game-title { font-size: .98rem; color: var(--txt-dim); font-weight: 600; }

.hud {
  display: flex; gap: 10px; width: min(720px, 100%);
  margin: 6px 0 12px; justify-content: center;
}
.hud-item {
  flex: 1; max-width: 160px; text-align: center;
  background: var(--card); border: 1px solid var(--card-border);
  border-radius: 12px; padding: 8px 4px;
  box-shadow: var(--shadow);
}
.hud-label { display: block; font-size: .68rem; color: var(--txt-dim); margin-bottom: 2px; }
.hud-value { font-size: 1.15rem; font-weight: 700; font-variant-numeric: tabular-nums; }
.hud-value.warn { color: var(--danger); animation: pulse .5s ease infinite alternate; }
@keyframes pulse { to { opacity: .55; } }
#hud-lives { letter-spacing: 2px; }
#hud-lives .off { opacity: .25; filter: grayscale(1); }

/* 追踪倒计时进度条：容器永久占位（visibility 切换显隐，布局不抖动） */
.track-bar {
  position: relative; width: min(720px, 100%); height: 14px;
  background: #e9edf5; border: 1px solid var(--card-border);
  border-radius: 999px; margin-bottom: 12px; overflow: hidden;
  visibility: hidden;
}
.track-bar.on { visibility: visible; }
.track-bar-fill {
  position: absolute; inset: 0; width: 100%;
  background: linear-gradient(90deg, rgba(13, 148, 136, .5), rgba(2, 132, 199, .5));
  transform-origin: left;
}

/* 竞技场 */
.arena-wrap {
  position: relative; width: min(94vw, 720px);
  user-select: none;
}
#arena {
  display: block; width: 100%;
  border-radius: var(--radius);
  background:
    radial-gradient(120% 90% at 50% 0%, #ffffff 0%, #f4f7fc 62%, #edf1f9 100%);
  border: 1px solid #dbe2ee;
  box-shadow: var(--shadow), inset 0 2px 16px rgba(30, 41, 59, .06);
  touch-action: none;
}
#arena.pickable { cursor: pointer; }

/* 记忆阶段大号提示浮层：竞技场顶部区域，ready 结束即消失 */
.ready-overlay {
  position: absolute; top: 7%; left: 0; right: 0;
  text-align: center; pointer-events: none; z-index: 6;
  font-size: clamp(1.35rem, 4.6vw, 2.1rem); font-weight: 800; letter-spacing: .06em;
  color: var(--txt);
  text-shadow: 0 2px 16px rgba(255, 255, 255, .95), 0 0 4px rgba(255, 255, 255, .9);
  opacity: 0; transform: translateY(-12px) scale(.9);
  transition: opacity .25s ease, transform .3s cubic-bezier(.2, 1.5, .4, 1);
}
.ready-overlay.show { opacity: 1; transform: none; }
.ready-overlay b { color: var(--target); font-size: 1.2em; }

/* 烟雾覆盖层 */
.fog-layer {
  position: absolute; inset: 0; border-radius: var(--radius);
  background:
    radial-gradient(60% 55% at 30% 35%, rgba(226, 232, 240, .95), rgba(203, 213, 225, .82) 70%),
    radial-gradient(55% 60% at 72% 68%, rgba(226, 232, 240, .92), rgba(203, 213, 225, .8) 70%);
  backdrop-filter: blur(3px);
  opacity: 0; pointer-events: none;
  transition: opacity .25s;
  z-index: 5;
}
.fog-layer.show { opacity: .96; }

.game-tip { margin-top: 14px; color: var(--txt-dim); font-size: .82rem; letter-spacing: .05em; min-height: 1.3em; text-align: center; }

/* ---------- 结算页 ---------- */
#screen-result { justify-content: center; }
.result-card {
  width: min(460px, 100%); text-align: center;
  background: var(--card); border: 1px solid var(--card-border);
  border-radius: 24px; padding: 34px 26px 28px;
  box-shadow: 0 24px 60px rgba(30, 41, 59, .14);
}
.result-card h2 { font-size: 1.35rem; margin-bottom: 6px; }
.result-level { font-size: 3.2rem; font-weight: 800; font-variant-numeric: tabular-nums; color: var(--accent); }
.result-level small { font-size: 1.1rem; color: var(--txt-dim); margin-left: 6px; font-weight: 500; }
.result-newbest {
  display: inline-block; margin-top: 8px; padding: 5px 16px; border-radius: 999px;
  font-size: .85rem; font-weight: 700;
  background: rgba(245, 158, 11, .12); color: var(--gold);
  border: 1px solid rgba(245, 158, 11, .45);
  animation: pop .35s cubic-bezier(.2, 1.8, .4, 1) both;
}
@keyframes pop { from { transform: scale(.4); opacity: 0; } to { transform: scale(1); opacity: 1; } }
.result-detail { display: flex; justify-content: center; gap: 22px; color: var(--txt-dim); font-size: .88rem; margin: 18px 0 4px; flex-wrap: wrap; }
.result-detail b { display: block; font-size: 1.25rem; color: var(--txt); font-variant-numeric: tabular-nums; }
.result-detail span { font-size: .76rem; }
.result-actions { display: flex; gap: 10px; justify-content: center; margin-top: 24px; flex-wrap: wrap; }

/* ---------- 排行榜 ---------- */
.board-wrap { width: min(560px, 100%); display: flex; flex-direction: column; gap: 12px; }
.board-list { display: flex; flex-direction: column; gap: 8px; }
.board-row {
  display: flex; align-items: center; gap: 12px;
  background: var(--card); border: 1px solid var(--card-border); border-left: 3px solid transparent;
  border-radius: 14px; padding: 12px 16px; box-shadow: var(--shadow);
}
.board-row.tier-top { border-left-color: #f59e0b; }
.board-row.tier-gold { border-left-color: #d97706; }
.board-row.tier-silver { border-left-color: #94a3b8; }
.board-row.tier-bronze { border-left-color: #b45309; }
.board-row.me { border-color: var(--accent); border-left-color: var(--accent); background: var(--accent-soft); }
.br-rank { min-width: 44px; font-weight: 800; color: var(--txt-dim); font-variant-numeric: tabular-nums; }
.br-rank.top { font-size: 1.3rem; }
.br-name { flex: 1; font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.board-row.me .br-name { color: var(--accent); }
.br-value { font-weight: 800; color: var(--accent); font-variant-numeric: tabular-nums; }
.br-value small { font-weight: 500; color: var(--txt-dim); font-size: .72rem; margin-left: 2px; }
.board-foot { text-align: center; color: var(--txt-dim); font-size: .85rem; padding: 10px 0 4px; }
.empty-note { color: var(--txt-dim); font-size: .85rem; text-align: center; padding: 18px 0; }

/* ---------- 统计 ---------- */
.stats-wrap { width: min(680px, 100%); display: flex; flex-direction: column; gap: 16px; }
.stat-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 12px; }
.stat-card {
  background: var(--card); border: 1px solid var(--card-border); border-radius: 16px;
  padding: 16px; text-align: center; box-shadow: var(--shadow);
}
.stat-card .sc-v { font-size: 1.5rem; font-weight: 800; color: var(--accent); font-variant-numeric: tabular-nums; }
.stat-card .sc-l { font-size: .75rem; color: var(--txt-dim); margin-top: 4px; }
.stats-section {
  background: var(--card); border: 1px solid var(--card-border); border-radius: 16px; padding: 18px;
  box-shadow: var(--shadow);
}
.stats-section h3 { font-size: .95rem; margin-bottom: 10px; color: var(--accent); }
.stats-section p { font-size: .9rem; color: #475569; line-height: 1.7; }
.stats-section b { color: var(--txt); }

/* ---------- 准备屏（开始游戏前） ---------- */
.intro-wrap { width: min(620px, 100%); display: flex; flex-direction: column; gap: 18px; align-items: center; }
.intro-steps {
  display: flex; align-items: stretch; gap: 8px; width: 100%;
  background: var(--card); border: 1px solid var(--card-border); border-radius: 16px;
  padding: 18px 14px; box-shadow: var(--shadow);
}
.intro-step { flex: 1; display: flex; flex-direction: column; align-items: center; gap: 5px; text-align: center; }
.intro-step .is-icon { font-size: 1.8rem; }
.intro-step b { font-size: .98rem; }
.intro-step small { color: var(--txt-dim); font-size: .74rem; line-height: 1.45; }
.is-arrow { align-self: center; color: var(--txt-dim); font-size: 1rem; }
.intro-rules {
  width: 100%;
  background: var(--card); border: 1px solid var(--card-border); border-radius: 16px;
  padding: 16px 20px; box-shadow: var(--shadow);
  display: flex; flex-direction: column; gap: 8px;
}
.intro-rules p { font-size: .9rem; color: #475569; line-height: 1.6; }
.intro-rules b { color: var(--txt); }
.intro-wrap .btn-primary { width: 100%; }

/* ---------- 成就 ---------- */
.ach-wrap { width: min(680px, 100%); display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 12px; }
.ach-card {
  display: flex; gap: 14px; align-items: center;
  background: var(--card); border: 1px solid var(--card-border); border-radius: 16px; padding: 14px 16px;
  box-shadow: var(--shadow);
}
.ach-card.locked { opacity: .5; filter: grayscale(.7); box-shadow: none; background: #f4f6fb; }
.ach-card .a-icon { font-size: 1.7rem; }
.ach-card b { display: block; font-size: .95rem; margin-bottom: 2px; }
.ach-card small { color: var(--txt-dim); font-size: .78rem; line-height: 1.4; }
.ach-card .a-date { margin-left: auto; font-size: .7rem; color: var(--accent); white-space: nowrap; }

/* 结算屏新解锁成就横幅 */
.result-ach { margin-top: 14px; display: flex; flex-direction: column; gap: 8px; }
.ra-item {
  display: flex; align-items: center; gap: 10px; text-align: left;
  padding: 10px 14px; border-radius: 12px;
  background: rgba(245, 158, 11, .1); border: 1px solid rgba(245, 158, 11, .4);
  font-weight: 700; font-size: .95rem;
  animation: pop .35s cubic-bezier(.2, 1.8, .4, 1) both;
}
.ra-item .ra-icon { font-size: 1.3rem; }
.ra-item small { margin-left: auto; color: var(--txt-dim); font-weight: 400; font-size: .74rem; }

/* ---------- 玩法说明 ---------- */
.help-wrap { width: min(680px, 100%); display: flex; flex-direction: column; gap: 14px; }
.help-card {
  background: var(--card); border: 1px solid var(--card-border); border-radius: 16px; padding: 20px;
  line-height: 1.75; box-shadow: var(--shadow);
}
.help-card h3 { margin-bottom: 8px; font-size: 1rem; color: var(--accent); }
.help-card p, .help-card li { font-size: .9rem; color: #475569; }
.help-card ul { padding-left: 20px; }
.help-card b { color: var(--txt); }
.help-card .ev { display: inline-block; margin: 2px 0; }

/* ---------- 登录守卫 ---------- */
.auth-guard {
  position: fixed; inset: 0; z-index: 100;
  background: linear-gradient(180deg, var(--bg-1) 0%, var(--bg-0) 100%);
  display: flex; flex-direction: column; gap: 16px; align-items: center; justify-content: center;
  color: var(--txt-dim); font-size: .92rem; letter-spacing: .15em;
}
.ag-spin {
  width: 36px; height: 36px; border-radius: 50%;
  border: 3px solid #dfe5ef; border-top-color: var(--accent);
  animation: agspin .9s linear infinite;
}
@keyframes agspin { to { transform: rotate(360deg); } }

/* ---------- 登录页 ---------- */
.login-screen { justify-content: center; gap: 30px; min-height: 100vh; min-height: 100dvh; }
.login-head { text-align: center; }
.login-card {
  width: min(420px, 100%);
  background: var(--card); border: 1px solid var(--card-border);
  border-radius: 24px; padding: 26px 24px 22px;
  box-shadow: 0 24px 60px rgba(30, 41, 59, .12);
  display: flex; flex-direction: column; gap: 16px;
}
.login-tabs { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.login-tabs button { text-align: center; font-size: 1rem; padding: 12px; }
.login-submit { width: 100%; }
.login-perks { list-style: none; display: flex; flex-direction: column; gap: 6px; }
.login-perks li { color: var(--txt-dim); font-size: .8rem; }
.login-foot { color: var(--txt-dim); font-size: .8rem; letter-spacing: .1em; }

/* ---------- 登录/注册表单 ---------- */
.auth-form { display: flex; flex-direction: column; gap: 10px; }
.auth-form input {
  padding: 13px 16px; border-radius: 12px; font-size: .95rem; font-family: inherit;
  border: 1px solid var(--card-border); background: #f8fafd; color: var(--txt);
  outline: none; transition: border-color .15s, background .15s;
}
.auth-form input:focus { border-color: var(--accent); background: #fff; }
.auth-err { color: var(--danger); font-size: .8rem; min-height: 1.2em; }
.auth-err.ok { color: #16a34a; }

/* ---------- 手机适配 ---------- */
@media (max-width: 520px) {
  .home-head { margin-top: 5vh; }
  .hud-item { padding: 6px 2px; }
  .hud-value { font-size: 1rem; }
  .result-level { font-size: 2.6rem; }
  .ready-overlay { font-size: 1.3rem; }
  .intro-steps { flex-wrap: wrap; }
  .intro-step { flex: 1 1 40%; padding: 6px 0; }
  .is-arrow { display: none; }
}