/* ═══════════════════════════════════════════════════════════
   设计系统 — 刷题营  v2
   Design language: Dark Fantasy Academy
   · 深色星空底色 + 渐变光晕背景
   · 玻璃拟态面板（glassmorphism）
   · 多层级阴影 + 辉光
   · 平滑微动画
═══════════════════════════════════════════════════════════ */

/* ── 设计令牌 ────────────────────────────────────────────── */
:root {
  --bg:          #060917;
  --bg-2:        #090d24;
  --panel:       rgba(13,19,46,0.88);
  --panel-2:     rgba(19,28,62,0.84);
  --panel-3:     rgba(28,40,88,0.80);

  --text:        #eaecf8;
  --text-2:      #bfc8e8;
  --muted:       #7b87b2;
  --muted-2:     #4a5478;

  --accent:      #5b8cff;
  --accent-2:    #7c5bff;
  --accent-glow: rgba(91,140,255,0.4);
  --gold:        #f5c451;
  --gold-glow:   rgba(245,196,81,0.45);
  --ok:          #2ecc71;
  --bad:         #ff5d6c;

  --border:      rgba(255,255,255,0.09);
  --border-2:    rgba(255,255,255,0.16);
  --border-accent: rgba(91,140,255,0.35);

  --radius:      16px;
  --radius-sm:   10px;
  --radius-xs:   7px;

  --shadow-sm:   0 2px 10px rgba(0,0,0,0.35);
  --shadow:      0 6px 28px rgba(0,0,0,0.50);
  --shadow-xl:   0 14px 56px rgba(0,0,0,0.60);
  --inset-glow:  inset 0 1px 0 rgba(255,255,255,0.08);
}

/* ── 重置 + 基础 ──────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }
body {
  margin: 0;
  font-family: system-ui,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
  background-color: var(--bg);
  background-image:
    radial-gradient(ellipse 75% 55% at 10% 5%,  rgba(91,140,255,.20) 0%, transparent 55%),
    radial-gradient(ellipse 60% 50% at 90% 95%, rgba(124,91,255,.17) 0%, transparent 55%),
    radial-gradient(ellipse 50% 40% at 55% 45%, rgba(0,180,255,.06) 0%, transparent 65%);
  background-attachment: fixed;
  color: var(--text);
  min-height: 100vh;
  line-height: 1.6;
}
a { color: var(--accent); text-decoration: none; transition: opacity .15s; }
a:hover { opacity: .8; text-decoration: underline; }

/* ── 导航栏 ──────────────────────────────────────────────── */
header.nav {
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 28px; height: 58px;
  background: rgba(6,9,23,0.82);
  backdrop-filter: blur(18px); -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 100;
  box-shadow: 0 1px 0 rgba(255,255,255,0.04), var(--shadow-sm);
}
.nav .brand {
  font-weight: 800; font-size: 19px; letter-spacing: .3px;
  background: linear-gradient(135deg, #fff 30%, var(--accent));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.nav .brand span { background: linear-gradient(135deg, var(--accent), var(--accent-2)); -webkit-background-clip: text; background-clip: text; }
.nav .links { display: flex; gap: 6px; align-items: center; flex-wrap: wrap; }
.nav .links a {
  color: var(--muted); font-size: 13px; font-weight: 500;
  padding: 5px 10px; border-radius: var(--radius-xs);
  transition: color .15s, background .15s;
}
.nav .links a:hover { color: var(--text); background: rgba(255,255,255,0.06); text-decoration: none; }
.nav .user { color: var(--muted); font-size: 13px; padding: 5px 10px; }
@media (max-width: 640px) {
  header.nav { flex-direction: column; height: auto; align-items: flex-start; padding: 12px 18px; gap: 8px; }
}

/* ── 版面容器 ─────────────────────────────────────────────── */
.container { max-width: 920px; margin: 0 auto; padding: 32px 24px 72px; }
h1 { font-size: 26px; font-weight: 800; margin: 0 0 6px; letter-spacing: -.3px; }
h2 { font-weight: 700; }
.subtitle { color: var(--muted); margin: 0 0 26px; font-size: 14px; }
.quiz-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; }
.progress { color: var(--muted); font-size: 13px; }
.muted-sm { color: var(--muted); font-size: 13px; }
.empty { color: var(--muted); text-align: center; padding: 48px; }
.center { text-align: center; }
.loading {
  color: var(--muted); padding: 36px; text-align: center;
  background: var(--panel); border: 1px solid var(--border);
  border-radius: var(--radius);
}

/* ── 卡片 ────────────────────────────────────────────────── */
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 16px; }
.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  transition: transform .18s ease, border-color .18s ease, box-shadow .18s ease;
  box-shadow: var(--shadow-sm), var(--inset-glow);
  backdrop-filter: blur(12px);
}
.card.clickable { cursor: pointer; }
.card.clickable:hover {
  transform: translateY(-4px);
  border-color: var(--border-accent);
  box-shadow: var(--shadow), 0 0 0 1px var(--border-accent), var(--inset-glow);
}
.card h3 { margin: 0 0 8px; font-size: 16px; font-weight: 700; }
.card .meta { color: var(--muted); font-size: 13px; }

/* ── 按钮 ────────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-2) 100%);
  color: #fff; border: none; border-radius: 12px;
  padding: 11px 22px; font-size: 15px; font-weight: 600; cursor: pointer;
  transition: transform .18s ease, box-shadow .18s ease, filter .18s ease;
  box-shadow: 0 4px 18px var(--accent-glow), var(--inset-glow);
  text-decoration: none; white-space: nowrap;
}
.btn:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px var(--accent-glow), var(--inset-glow);
  filter: brightness(1.1);
  text-decoration: none;
}
.btn:active:not(:disabled) { transform: translateY(0); }
.btn:disabled { opacity: .45; cursor: not-allowed; }
.btn.ghost {
  background: transparent;
  border: 1px solid var(--border-2);
  color: var(--text-2);
  box-shadow: var(--inset-glow);
}
.btn.ghost:hover:not(:disabled) {
  border-color: var(--border-accent);
  background: rgba(91,140,255,0.08);
  box-shadow: 0 0 18px rgba(91,140,255,0.15), var(--inset-glow);
  filter: none;
}

/* ── 徽章 ─────────────────────────────────────────────────── */
.badge {
  display: inline-block; font-size: 11px; font-weight: 600;
  padding: 3px 10px; border-radius: 999px;
  border: 1px solid var(--border-2); color: var(--muted);
  letter-spacing: .3px;
}
.badge.easy   { color: var(--ok);   border-color: rgba(46,204,113,.5);   background: rgba(46,204,113,.08); }
.badge.medium { color: #f5c451;     border-color: rgba(245,196,81,.5);   background: rgba(245,196,81,.08); }
.badge.hard   { color: var(--bad);  border-color: rgba(255,93,108,.5);   background: rgba(255,93,108,.08); }

/* ── 表单 / 登录页 ───────────────────────────────────────── */
.form-wrap { max-width: 400px; margin: 56px auto; }
.form-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 32px;
  box-shadow: var(--shadow-xl), var(--inset-glow);
  backdrop-filter: blur(20px);
}
.tabs { display: flex; margin-bottom: 28px; border-bottom: 1px solid var(--border); gap: 2px; }
.tabs button {
  flex: 1; background: none; border: none; color: var(--muted);
  padding: 11px 8px; cursor: pointer; font-size: 15px; font-weight: 600;
  border-bottom: 2px solid transparent; transition: color .15s, border-color .15s;
}
.tabs button.active { color: var(--text); border-bottom-color: var(--accent); }
.tabs button:hover:not(.active) { color: var(--text-2); }
label { display: block; font-size: 12px; font-weight: 600; color: var(--muted); margin: 18px 0 7px; letter-spacing: .5px; text-transform: uppercase; }
input, select {
  width: 100%;
  background: rgba(6,9,23,0.7);
  border: 1px solid var(--border-2);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  color: var(--text);
  font-size: 15px;
  transition: border-color .18s, box-shadow .18s;
}
input:focus, select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(91,140,255,0.18);
}
select { cursor: pointer; }
.form-card .btn { width: 100%; margin-top: 24px; padding: 13px; font-size: 16px; border-radius: 12px; }
.msg { margin-top: 14px; font-size: 14px; min-height: 20px; text-align: center; }
.msg.error { color: var(--bad); }
.msg.ok    { color: var(--ok);  }

/* ── 答题区 ──────────────────────────────────────────────── */
.question-box {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow), var(--inset-glow);
  backdrop-filter: blur(12px);
}
.question-text { font-size: 18px; line-height: 1.65; margin: 0 0 24px; font-weight: 500; }
.options { display: flex; flex-direction: column; gap: 11px; }
.option {
  text-align: left;
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px 18px;
  color: var(--text);
  font-size: 15px;
  cursor: pointer;
  transition: border-color .16s, background .16s, transform .16s, box-shadow .16s;
  position: relative; overflow: hidden;
}
.option::before {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(90deg, rgba(91,140,255,0) 0%, rgba(91,140,255,0.06) 100%);
  opacity: 0; transition: opacity .2s;
}
.option:hover:not(:disabled) { border-color: var(--border-accent); transform: translateX(4px); box-shadow: -3px 0 0 var(--accent); }
.option:hover:not(:disabled)::before { opacity: 1; }
.option.selected  { border-color: var(--accent); box-shadow: -3px 0 0 var(--accent), 0 0 18px rgba(91,140,255,.18); }
.option.correct   { border-color: var(--ok); background: rgba(46,204,113,.1); box-shadow: -3px 0 0 var(--ok); }
.option.wrong     { border-color: var(--bad); background: rgba(255,93,108,.1); box-shadow: -3px 0 0 var(--bad); }
.option:disabled  { cursor: default; }
.explanation {
  margin-top: 20px; padding: 18px; border-radius: var(--radius-sm);
  border: 1px solid var(--border); background: rgba(6,9,23,0.55); line-height: 1.7;
}
.explanation .result { font-weight: 700; margin-bottom: 6px; }
.explanation .result.ok  { color: var(--ok); }
.explanation .result.bad { color: var(--bad); }
.quiz-actions { margin-top: 22px; display: flex; gap: 12px; justify-content: flex-end; }

/* ── 统计 / 记录 ──────────────────────────────────────────── */
.stats { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 26px; }
.stat {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 24px; min-width: 130px;
  box-shadow: var(--shadow-sm), var(--inset-glow);
  transition: transform .18s, border-color .18s;
}
.stat:hover { transform: translateY(-2px); border-color: var(--border-accent); }
.stat .num { font-size: 28px; font-weight: 800; line-height: 1.1; }
.stat .lbl { color: var(--muted); font-size: 12px; margin-top: 4px; letter-spacing: .3px; }
.record {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px 18px; margin-bottom: 10px;
  transition: border-color .15s, transform .15s;
}
.record.clickable { cursor: pointer; }
.record.clickable:hover { border-color: var(--border-accent); transform: translateX(4px); }
.record .q { margin: 0 0 6px; }
.record .line { font-size: 13px; color: var(--muted); }
.record .tag { font-weight: 700; }
.record .tag.ok  { color: var(--ok);  }
.record .tag.bad { color: var(--bad); }
.filter-section { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 20px; align-items: center; }
.stats-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px,1fr)); gap: 16px; margin-bottom: 24px; }
.mastery-tag { font-weight: 700; font-size: 14px; }
.records-section { margin-top: 32px; }
.records-section > h2 { border-top: 1px solid var(--border); padding-top: 24px; margin-bottom: 16px; }
.records-sub { margin: 24px 0 12px; font-size: 15px; color: var(--muted); }

/* ── 游戏化 / XP / 成就 ──────────────────────────────────── */
.xpbar { margin-bottom: 20px; }
.xpbar-top { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px; margin-bottom: 8px; font-size: 13px; color: var(--muted); }
.level-badge {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff; font-weight: 700; padding: 3px 12px; border-radius: 999px; font-size: 13px;
}
.xpbar-stars { color: var(--gold); font-weight: 700; }
.xpbar-track {
  height: 10px; background: rgba(6,9,23,0.7); border: 1px solid var(--border);
  border-radius: 999px; overflow: hidden;
}
.xpbar-fill {
  height: 100%; border-radius: 999px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  transition: width .7s cubic-bezier(.4,0,.2,1);
  box-shadow: 0 0 10px var(--accent-glow);
}

/* Learning map */
.world {
  background: var(--panel); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 20px 22px; margin-bottom: 18px;
  box-shadow: var(--shadow-sm), var(--inset-glow);
}
.world-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 18px; }
.world-head h2 { margin: 0; font-size: 17px; }
.world-stars { color: var(--gold); font-weight: 700; font-size: 13px; }
.stage-path { display: flex; align-items: stretch; gap: 0; flex-wrap: wrap; }
.stage-link { align-self: center; width: 26px; height: 2px; background: var(--border-2); margin: 0 2px; }
.stage-node {
  flex: 0 0 auto; width: 118px; text-align: center;
  background: var(--panel-2); border: 1px solid var(--border);
  border-radius: 12px; padding: 14px 10px; cursor: pointer;
  transition: transform .16s, border-color .16s, box-shadow .16s;
  box-shadow: var(--shadow-sm);
}
.stage-node:hover:not(.locked) { transform: translateY(-4px); border-color: var(--border-accent); box-shadow: var(--shadow), 0 0 0 1px var(--border-accent); }
.stage-node.locked { opacity: .45; cursor: not-allowed; }
.stage-diff { font-weight: 700; margin-bottom: 8px; font-size: 14px; }
.stage-lock { font-size: 18px; min-height: 24px; }
.stage-meta { color: var(--muted); font-size: 12px; margin-top: 6px; }
.stars-row .star { color: var(--border-2); font-size: 15px; }
.stars-row .star.filled { color: var(--gold); }

/* Stage result */
.result-screen h2 { font-size: 24px; }
.big-stars { margin: 14px 0; }
.big-star { font-size: 46px; color: var(--muted-2); display: inline-block; margin: 0 4px; }
.big-star.filled { color: var(--gold); animation: pop .4s ease backwards; text-shadow: 0 0 18px var(--gold-glow); }
@keyframes pop { 0% { transform: scale(0) rotate(-30deg); opacity:0; } 70% { transform: scale(1.3) rotate(8deg); } 100% { transform: scale(1) rotate(0); opacity:1; } }
.xp-gain { margin: 18px 0; }
.xp-gain-total {
  font-size: 32px; font-weight: 800;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.xp-gain-detail { color: var(--muted); font-size: 13px; margin-top: 4px; }
.levelup {
  margin: 16px auto; max-width: 320px; padding: 14px;
  background: rgba(124,91,255,.14); border: 1px solid rgba(124,91,255,.4);
  border-radius: 12px; font-size: 16px;
  box-shadow: 0 0 28px rgba(124,91,255,.2);
}
.review-details { margin-top: 24px; text-align: left; border-top: 1px solid var(--border); padding-top: 16px; }
.review-details summary { cursor: pointer; color: var(--accent); font-size: 14px; text-align: center; }
.ach-unlocked {
  margin: 20px auto 0; max-width: 420px; padding: 18px;
  background: rgba(245,196,81,.08); border: 1px solid rgba(245,196,81,.35);
  border-radius: 14px; box-shadow: 0 0 24px var(--gold-glow);
}
.ach-unlocked h3 { margin: 0 0 12px; font-size: 15px; }
.ach-item { display: flex; align-items: center; gap: 12px; text-align: left; margin-bottom: 8px; }
.ach-icon { font-size: 28px; }

/* Level hero (achievements page) */
.level-hero {
  display: flex; align-items: center; gap: 22px;
  background: var(--panel); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 24px;
  margin-bottom: 22px;
  box-shadow: var(--shadow), var(--inset-glow);
}
.level-circle {
  flex: 0 0 auto; width: 88px; height: 88px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: 22px; color: #fff;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 0 30px var(--accent-glow), 0 0 60px rgba(91,140,255,.2);
}
.level-hero-info { flex: 1; min-width: 0; }

/* Achievement grid */
.ach-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(158px,1fr)); gap: 14px; }
.ach-card {
  background: var(--panel); border: 1px solid var(--border);
  border-radius: 14px; padding: 20px 14px; text-align: center;
  transition: transform .16s, border-color .16s, box-shadow .16s;
  box-shadow: var(--shadow-sm);
}
.ach-card:hover { transform: translateY(-3px); }
.ach-card.unlocked {
  border-color: rgba(245,196,81,.45);
  box-shadow: 0 0 20px rgba(245,196,81,.15), var(--shadow-sm);
  background: linear-gradient(135deg, rgba(245,196,81,.06), var(--panel));
}
.ach-card.locked { opacity: .50; }
.ach-card-icon { font-size: 40px; margin-bottom: 10px; }
.ach-card-name { font-weight: 700; margin-bottom: 4px; font-size: 14px; }
.ach-card-desc { color: var(--muted); font-size: 11px; min-height: 32px; line-height: 1.5; }
.ach-card-date { color: var(--muted-2); font-size: 10px; margin-top: 8px; }

/* PvP rank card */
.pvp-rank-card {
  background: var(--panel); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 22px; margin: 22px 0;
  box-shadow: var(--shadow), var(--inset-glow);
}
.pvp-rank-header { display: flex; align-items: center; gap: 16px; margin-bottom: 16px; }
.pvp-rank-badge { font-size: 56px; line-height: 1; flex: 0 0 auto; filter: drop-shadow(0 0 12px currentColor); }
.pvp-rank-info  { flex: 1; }
.pvp-rank-name  { font-size: 1.35rem; font-weight: 800; }
.pvp-rank-pts   { color: var(--muted); font-size: .88rem; margin-top: 3px; }
.pvp-rank-record { text-align: right; font-size: .9rem; }
.pvp-win  { color: #4caf50; font-weight: 700; }
.pvp-loss { color: #f44336; font-weight: 700; }
.pvp-draw { color: var(--muted); }
.pvp-sep  { color: var(--muted-2); }
.pvp-rank-progress-row { display: flex; justify-content: space-between; font-size: .78rem; margin-bottom: 6px; color: var(--muted); }
.pvp-rank-bar-track { height: 8px; background: rgba(6,9,23,.7); border: 1px solid var(--border); border-radius: 4px; overflow: hidden; }
.pvp-rank-bar-fill { height: 100%; border-radius: 4px; transition: width .5s ease; box-shadow: 0 0 8px currentColor; }
.pvp-rank-max  { color: var(--muted); font-size: .84rem; text-align: center; padding: 8px 0; }
.pvp-rank-legend { display: flex; align-items: center; justify-content: space-between; margin-top: 14px; flex-wrap: wrap; gap: 8px; }

/* ── 个性化 / 洞察 ───────────────────────────────────────── */
.insight-grid { display: grid; grid-template-columns: repeat(auto-fill,minmax(255px,1fr)); gap: 16px; margin-top: 20px; }
.insight-card {
  background: var(--panel); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 24px;
  text-decoration: none; color: var(--text);
  transition: transform .18s, border-color .18s, box-shadow .18s;
  box-shadow: var(--shadow-sm), var(--inset-glow);
}
.insight-card:hover { transform: translateY(-4px); border-color: var(--border-accent); box-shadow: var(--shadow), 0 0 0 1px var(--border-accent); text-decoration: none; }
.insight-card .icon { font-size: 34px; margin-bottom: 12px; }
.insight-card h3 { margin: 0 0 8px; font-size: 17px; }
.insight-card p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.55; }
.mastery-row {
  background: var(--panel); border: 1px solid var(--border);
  border-radius: 12px; padding: 16px 18px; margin-bottom: 12px;
}
.mastery-row .head { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 10px; }
.mastery-row .cat { font-weight: 600; }
.mastery-row .score { font-size: 13px; color: var(--muted); }
.mbar { height: 10px; border-radius: 999px; background: rgba(6,9,23,.7); overflow: hidden; }
.mbar > span { display: block; height: 100%; border-radius: 999px; transition: width .6s ease; }
.mbar > span.lv-strong { background: linear-gradient(90deg,#2ecc71,#27ae60); box-shadow:0 0 8px rgba(46,204,113,.5); }
.mbar > span.lv-good   { background: linear-gradient(90deg,var(--accent),var(--accent-2)); box-shadow:0 0 8px var(--accent-glow); }
.mbar > span.lv-mid    { background: linear-gradient(90deg,#f5c451,#f0932b); box-shadow:0 0 8px rgba(245,196,81,.4); }
.mbar > span.lv-weak   { background: linear-gradient(90deg,#ff7979,#ff5d6c); box-shadow:0 0 8px rgba(255,93,108,.4); }
.mastery-row .diffs { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 10px; }
.mastery-row .diff-chip { font-size: 12px; color: var(--muted); border: 1px solid var(--border); border-radius: 999px; padding: 2px 10px; }
.overall-hero {
  background: linear-gradient(135deg,rgba(91,140,255,.12),rgba(124,91,255,.10));
  border: 1px solid var(--border-accent); border-radius: var(--radius);
  padding: 24px; text-align: center; margin-bottom: 24px;
  box-shadow: 0 0 40px rgba(91,140,255,.1);
}
.overall-hero .big { font-size: 46px; font-weight: 800; }
.overall-hero .lbl { color: var(--muted); }
.graph-wrap {
  background: var(--panel); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 10px; overflow-x: auto;
}
.graph-wrap svg { display: block; margin: 0 auto; max-width: 100%; }
.graph-legend { display: flex; gap: 16px; flex-wrap: wrap; justify-content: center; margin-top: 12px; font-size: 13px; color: var(--muted); }
.graph-legend .dot { display: inline-block; width: 12px; height: 12px; border-radius: 50%; margin-right: 5px; vertical-align: middle; }
.profile-summary {
  background: var(--panel); border: 1px solid var(--border);
  border-left: 3px solid var(--accent); border-radius: 12px;
  padding: 18px; line-height: 1.75; margin-bottom: 20px;
}
.err-bar-row { margin-bottom: 12px; }
.err-bar-row .head { display: flex; justify-content: space-between; font-size: 14px; margin-bottom: 6px; }
.err-bar { height: 22px; border-radius: 6px; background: rgba(6,9,23,.7); overflow: hidden; }
.err-bar > span { display: block; height: 100%; }
.err-blind        { background: #ff5d6c; }
.err-careless     { background: #f5c451; }
.err-misunderstood{ background: #7c5bff; }
.err-confused     { background: #5b8cff; }
.err-unclassified { background: #6b7280; }
.adaptive-banner {
  background: linear-gradient(135deg,rgba(91,140,255,.12),rgba(124,91,255,.10));
  border: 1px solid var(--border-accent); border-radius: 12px;
  padding: 16px 20px; margin-bottom: 18px;
  box-shadow: 0 0 28px rgba(91,140,255,.08);
}
.adaptive-banner .reco { font-size: 15px; }
.adaptive-banner .reason { color: var(--muted); font-size: 13px; margin-top: 6px; }

/* ── 无尽对战 ─────────────────────────────────────────────── */
.battle-intro {
  display: flex; align-items: center; justify-content: center;
  gap: 28px; margin-bottom: 24px;
}
.vs-big {
  font-size: 30px; font-weight: 900; letter-spacing: 2px;
  color: #ff8a3d; text-shadow: 0 0 20px rgba(255,120,40,.8), 0 0 40px rgba(255,80,20,.4);
}
.fighter { line-height: 0; user-select: none; }
.fighter img { width: 88px; height: auto; display: block; image-rendering: auto; -webkit-user-drag: none; }
.fighter.big img { width: 120px; }
.fighter.monster img { transform: scaleX(-1); }

.battle-stage {
  position: relative;
  display: grid; grid-template-columns: 1fr auto 1fr;
  align-items: end; gap: 12px;
  min-height: 230px; padding: 24px 18px 18px;
  margin-bottom: 18px;
  border: 1px solid rgba(80,50,30,.6);
  border-radius: var(--radius);
  overflow: hidden; isolation: isolate;
  background:
    radial-gradient(120% 90% at 50% 10%,  rgba(255,150,60,.18) 0%, transparent 52%),
    radial-gradient(80%  70% at 50% 120%, rgba(255,90,30,.22)  0%, transparent 58%),
    linear-gradient(180deg, #221626 0%, #180f22 45%, #100a18 100%);
  box-shadow: var(--shadow-xl), inset 0 1px 0 rgba(255,255,255,0.04);
}
.battle-stage::before {
  content:""; position:absolute; inset:0; z-index:0; pointer-events:none;
  background:
    repeating-linear-gradient(90deg, rgba(0,0,0,.18) 0 2px, transparent 2px 48px),
    radial-gradient(60% 40% at 50% 100%, rgba(255,120,40,.15), transparent 70%);
  -webkit-mask-image: linear-gradient(180deg, transparent 0, #000 35%);
          mask-image: linear-gradient(180deg, transparent 0, #000 35%);
  opacity: .55;
}
.battle-stage::after {
  content:""; position:absolute; inset:0; z-index:0; pointer-events:none;
  box-shadow: inset 0 0 130px 40px rgba(0,0,0,.7);
  border-radius: var(--radius);
}
.battle-stage > * { position: relative; z-index: 2; }
.fx-canvas { position: absolute; inset: 0; z-index: 1; pointer-events: none; }

.fighter-col { display: flex; flex-direction: column; align-items: center; gap: 8px; }
.hp-label { font-size: 12px; color: #e7d6c2; text-shadow: 0 1px 4px #000; font-weight: 600; }
.hp-bar {
  width: 100%; max-width: 210px; height: 12px;
  background: #0a080f; border: 1px solid rgba(80,50,30,.6);
  border-radius: 999px; overflow: hidden; box-shadow: 0 1px 6px rgba(0,0,0,.6);
}
.hp-fill { height: 100%; transition: width .38s ease; border-radius: 999px; }
.hp-fill.warrior { background: linear-gradient(90deg, #37e06a, #1f8f45); box-shadow: 0 0 8px rgba(55,224,106,.6); }
.hp-fill.monster { background: linear-gradient(90deg, #ff6a5d, #b0231b); box-shadow: 0 0 8px rgba(255,106,93,.5); }
.hp-fill.boss    { background: linear-gradient(90deg, #ff3a2a, #7a0f0a); box-shadow: 0 0 10px rgba(255,58,42,.7); }
.hp-fill.low     { animation: hpLow .65s ease-in-out infinite alternate; }
@keyframes hpLow { from { filter: brightness(1); } to { filter: brightness(1.8) saturate(1.3); } }

.fighter.warrior, .fighter.monster {
  filter: drop-shadow(0 6px 12px rgba(0,0,0,.65));
  transition: transform .15s ease;
}
.fighter.warrior { animation: bob 2.5s ease-in-out infinite; }
.fighter.monster { animation: bob 2.5s ease-in-out infinite .7s;
  filter: drop-shadow(0 6px 12px rgba(0,0,0,.65)) drop-shadow(0 0 12px rgba(255,60,40,.35)); }
@keyframes bob { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-7px); } }
.battle-mid { display: flex; align-items: center; justify-content: center; min-width: 40px; }

/* Combo meter */
.combo-meter {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  min-width: 108px; padding: 7px 14px; border-radius: 14px;
  background: rgba(18,22,46,.65); border: 1px solid transparent;
  transition: transform .2s, box-shadow .25s, border-color .25s;
  backdrop-filter: blur(6px);
}
.combo-count { font-size: 20px; font-weight: 800; letter-spacing: .5px; color: #cdd4f5; line-height: 1.1; }
.combo-mult  { font-size: 11px; color: var(--muted); margin-top: 2px; }
.combo-meter.warm { border-color: rgba(245,196,81,.5); box-shadow: 0 0 16px rgba(245,196,81,.25); }
.combo-meter.warm .combo-count { color: #f5c451; }
.combo-meter.hot  { border-color: rgba(255,138,42,.7); box-shadow: 0 0 22px rgba(255,138,42,.5); transform: scale(1.06); }
.combo-meter.hot  .combo-count { color: #ff9a3c; text-shadow: 0 0 12px rgba(255,138,42,.65); }
.combo-meter.blaze {
  border-color: rgba(255,90,60,.9);
  box-shadow: 0 0 28px rgba(255,90,60,.7), inset 0 0 18px rgba(255,120,60,.22);
  transform: scale(1.12);
  animation: comboBlaze .75s ease-in-out infinite alternate;
}
.combo-meter.blaze .combo-count { color: #ff6a4d; font-size: 23px; text-shadow: 0 0 16px rgba(255,90,60,.9); }
@keyframes comboBlaze {
  from { box-shadow: 0 0 22px rgba(255,90,60,.5), inset 0 0 12px rgba(255,120,60,.18); }
  to   { box-shadow: 0 0 38px rgba(255,90,60,.85), inset 0 0 24px rgba(255,120,60,.32); }
}

/* Floating damage */
.dmg-float {
  position: absolute; z-index: 6; pointer-events: none;
  font-weight: 800; font-size: 22px; color: #ffe08a;
  text-shadow: 0 2px 6px #000, 0 0 12px rgba(255,180,60,.8);
  transform: translate(-50%,-50%);
  animation: dmgRise .9s ease-out forwards;
}
.dmg-float.crit { font-size: 34px; color: #ffd33a; text-shadow: 0 2px 8px #000, 0 0 20px rgba(255,200,40,1); }
.dmg-float.to-warrior { color: #ff8a8a; text-shadow: 0 2px 6px #000, 0 0 12px rgba(255,70,70,.8); }
@keyframes dmgRise {
  0%   { opacity:0; transform:translate(-50%,-30%) scale(.6); }
  15%  { opacity:1; transform:translate(-50%,-60%) scale(1.15); }
  100% { opacity:0; transform:translate(-50%,-170%) scale(1); }
}

/* Battle animations */
.fighter.lunge    { animation: lunge .34s ease; }
.fighter.hit      { animation: hit .26s ease; }
.fighter.hit-crit { animation: hitCrit .32s ease; }
.fighter.dying    { animation: dying .55s ease forwards; }
@keyframes lunge {
  0%  { transform: translateX(0) scale(1); }
  45% { transform: translateX(14px) scale(1.15); }
  100%{ transform: translateX(0) scale(1); }
}
@keyframes hit {
  0%,100%{ transform: translateX(0); filter: none; }
  25%    { transform: translateX(-8px); filter: brightness(2.4) saturate(3) drop-shadow(0 0 14px #ff7a2a); }
  75%    { transform: translateX(8px);  filter: brightness(2.4) saturate(3) drop-shadow(0 0 14px #ff7a2a); }
}
@keyframes hitCrit {
  0%,100%{ transform: translateX(0) scale(1); filter: none; }
  20%    { transform: translateX(-12px) scale(1.09); filter: brightness(2.8) saturate(3) drop-shadow(0 0 20px #ffd23a); }
  60%    { transform: translateX(12px)  scale(1.09); filter: brightness(2.8) saturate(3) drop-shadow(0 0 20px #ffd23a); }
}
@keyframes dying {
  0%   { transform: scale(1) rotate(0); opacity:1; }
  100% { transform: scale(.15) rotate(80deg); opacity:0; filter: brightness(3) saturate(0); }
}
.battle-stage.shake      { animation: shake .36s cubic-bezier(.36,.07,.19,.97); }
.battle-stage.shake-hard { animation: shakeHard .44s cubic-bezier(.36,.07,.19,.97); }
@keyframes shake {
  10%,90% { transform: translateX(-2px); } 20%,80% { transform: translateX(5px); }
  30%,50%,70% { transform: translateX(-8px); } 40%,60% { transform: translateX(8px); }
}
@keyframes shakeHard {
  10%,90%{ transform:translateX(-4px); } 20%,80%{ transform:translateX(8px); }
  30%,50%,70%{ transform:translateX(-14px); } 40%,60%{ transform:translateX(14px); }
}
.battle-flash {
  margin-top: 16px; padding: 13px 16px; border-radius: 12px;
  text-align: center; font-weight: 700; font-size: 15px;
  animation: flashIn .2s ease;
  border: 1px solid transparent;
}
.battle-flash.ok  { background: rgba(46,204,113,.13); color: var(--ok);  border-color: rgba(46,204,113,.3);  }
.battle-flash.bad { background: rgba(255,93,108,.12);  color: var(--bad); border-color: rgba(255,93,108,.3);  }
.battle-flash.guarded { background: rgba(143,70,210,.16); border-color: rgba(197,132,255,.4); color: #dcb5ff; }
@keyframes flashIn { from { opacity:0; transform:translateY(8px); } to { opacity:1; transform:none; } }

/* Boss fight */
.battle-stage.boss-fight {
  box-shadow: inset 0 0 70px rgba(180,20,20,.4), var(--shadow-xl);
  border-color: rgba(255,70,60,.45);
}
.boss-banner {
  position: absolute; top: 9px; left: 50%; transform: translateX(-50%);
  z-index: 5; padding: 5px 18px; border-radius: 20px;
  background: linear-gradient(90deg, #b0231b, #ff5d3a);
  color: #fff; font-weight: 800; font-size: 12px; letter-spacing: 2.5px;
  box-shadow: 0 0 24px rgba(255,60,40,.75);
  animation: bossPulse .9s ease-in-out infinite alternate;
}
@keyframes bossPulse {
  from { transform:translateX(-50%) scale(1);    box-shadow:0 0 18px rgba(255,60,40,.6); }
  to   { transform:translateX(-50%) scale(1.07); box-shadow:0 0 34px rgba(255,60,40,.95); }
}
.fighter.monster.boss img { transform: scaleX(-1) scale(1.5); }

/* Intro board + run list */
.endless-board { margin-top: 22px; text-align: left; }
.board-empty {
  text-align: center; color: var(--muted); padding: 18px;
  border: 1px dashed var(--border); border-radius: var(--radius);
}
.board-title { font-weight: 700; font-size: 14px; margin-bottom: 10px; color: #e7d6c2; letter-spacing: .3px; }
.board-stats { display: grid; grid-template-columns: repeat(4,1fr); gap: 10px; }
.board-stat {
  background: var(--panel-2); border: 1px solid var(--border);
  border-radius: 12px; padding: 12px 8px; text-align: center;
  box-shadow: var(--shadow-sm);
}
.board-stat .num { font-size: 24px; font-weight: 800; color: var(--text); line-height: 1.1; }
.board-stat .num.boss-num  { color: #ff6a4d; }
.board-stat .num.combo-num { color: #ff9a3c; }
.board-stat .lbl { font-size: 11px; color: var(--muted); margin-top: 4px; }
.run-list { display: flex; flex-direction: column; gap: 8px; }
.run-row {
  display: flex; align-items: center; gap: 12px;
  background: var(--panel); border: 1px solid var(--border);
  border-radius: 12px; padding: 10px 14px;
  transition: transform .14s, border-color .2s;
}
.run-row:hover { transform: translateX(3px); border-color: var(--border-accent); }
.run-row.cleared { border-color: rgba(46,204,113,.45); background: rgba(46,204,113,.05); }
.run-monsters { text-align: center; min-width: 46px; }
.run-monsters b { display: block; font-size: 22px; font-weight: 800; color: var(--accent); line-height: 1; }
.run-monsters small { font-size: 11px; color: var(--muted); }
.run-mid { flex: 1; min-width: 0; }
.run-line { font-size: 14px; }
.run-tags { display: flex; gap: 6px; margin-top: 4px; flex-wrap: wrap; }
.run-tag { font-size: 11px; font-weight: 700; padding: 2px 8px; border-radius: 20px; background: var(--panel-2); color: var(--muted); }
.run-tag.boss  { background: rgba(255,90,60,.14);  color: #ff8a6a; }
.run-tag.combo { background: rgba(255,154,60,.14); color: #ffb15c; }
.run-tag.clear { background: rgba(46,204,113,.14); color: #4fdc8a; }
.run-time { font-size: 12px; color: var(--muted); white-space: nowrap; }

/* Result screen */
.result-screen.celebrate { animation: resultPop .4s ease; }
@keyframes resultPop { from { transform:scale(.96); opacity:.6; } to { transform:scale(1); opacity:1; } }
.result-headline { margin-bottom: 6px; }
.result-screen.cleared .result-headline { color: #4fdc8a; }
.result-summary { color: var(--gold); font-weight: 600; margin: 0 0 8px; }
.result-best { margin-top: 14px; }
.result-stats { display: flex; gap: 16px; justify-content: center; margin: 20px 0; flex-wrap: wrap; }
.result-stats .stat { position: relative; }
.result-stats .num.boss-num  { color: #ff6a4d; }
.result-stats .num.combo-num { color: #ff9a3c; }
.rec-chip {
  position: absolute; top: -10px; left: 50%; transform: translateX(-50%);
  font-size: 10px; font-weight: 800; white-space: nowrap;
  padding: 2px 8px; border-radius: 20px;
  background: linear-gradient(90deg,#f5c451,#ff9a3c); color: #1a1206;
  box-shadow: 0 2px 10px rgba(245,196,81,.55);
  animation: chipPop .5s ease .2s both;
}
@keyframes chipPop { from{transform:translateX(-50%) scale(0);} to{transform:translateX(-50%) scale(1);} }
.new-best { font-size: 20px; font-weight: 800; color: var(--gold); margin: 10px 0; animation: pulse .8s ease infinite alternate; }
@keyframes pulse { from{transform:scale(1);} to{transform:scale(1.08);} }

/* Mage character */
.mage-character {
  width: 150px; height: 166px;
  border: 1px solid rgba(193,126,255,.38); border-radius: 46% 46% 18px 18px;
  overflow: hidden;
  background: radial-gradient(circle at 50% 30%, rgba(142,62,223,.32), #100817 72%);
  box-shadow: inset 0 0 28px rgba(124,45,190,.2), 0 8px 22px rgba(0,0,0,.5);
}
.mage-character img { width:100%; height:100%; object-fit:cover; object-position:left center; transform:none; filter:none !important; }
.battle-intro .fighter.big.mage-character { width: 172px; height: 190px; }
.arcane-copy { color: #d5a2ff; }
.arcane-btn {
  background: linear-gradient(135deg, #7130b7, #b054f2 55%, #6822a9);
  border: 1px solid rgba(231,196,255,.48);
  box-shadow: 0 4px 24px rgba(164,75,235,.35);
}
.battle-stage > .arcane-guard-status {
  position: absolute; top: 12px; left: 50%; transform: translateX(-50%); z-index: 3;
  display: flex; align-items: center; gap: 8px; min-width: 190px;
  padding: 7px 14px; border: 1px solid rgba(203,150,255,.5); border-radius: 999px;
  background: rgba(22,8,38,.82); color: #ead6ff;
  box-shadow: 0 0 24px rgba(147,57,225,.28); backdrop-filter: blur(8px);
}
.arcane-guard-status small { display:block; margin-top:1px; color:#bda4d4; font-size:10px; }
.arcane-guard-status .guard-gem { color:#c779ff; text-shadow:0 0 12px #b74cff; }
.arcane-guard-status.spent { opacity:.55; filter:grayscale(.55); }
.arcane-guard-status.ready .guard-gem { animation: guardGem 1.1s ease-in-out infinite alternate; }
@keyframes guardGem { from{transform:scale(.88);} to{transform:scale(1.22);} }
.fighter.warrior.mage-character.guarding {
  animation: mageGuard .7s ease-in-out;
  border-color: #d8a5ff;
  box-shadow: 0 0 20px #a344ec, 0 0 56px rgba(154,66,226,.56), inset 0 0 34px rgba(190,111,255,.28);
}
@keyframes mageGuard { 0%,100%{transform:scale(1);} 45%{transform:scale(1.07); filter:brightness(1.4) saturate(1.35);} }

/* Char shop preview */
.char-preview { height: 96px; display: flex; align-items: flex-end; justify-content: center; margin-bottom: 4px; }
.char-preview img { height: 96px; width: auto; filter: drop-shadow(0 4px 8px rgba(0,0,0,.45)); }
.char-preview.character-card-art {
  height: 154px; margin: -6px -4px 6px;
  border: 1px solid rgba(192,119,255,.42); border-radius: 12px; overflow: hidden;
  background: #0d0716;
  box-shadow: inset 0 0 28px rgba(126,47,201,.28), 0 10px 28px rgba(0,0,0,.3);
}
.char-preview.character-card-art img { width:100%; height:100%; object-fit:cover; object-position:left center; filter:none !important; }
.char-skill {
  display: flex; flex-direction: column; gap: 2px; padding: 8px 10px;
  border: 1px solid rgba(181,102,255,.34); border-radius: 9px;
  color: #d9b8ff;
  background: linear-gradient(135deg,rgba(106,35,168,.24),rgba(46,16,79,.28));
  font-size: 11px; line-height: 1.4;
}
.char-skill span { color: #f1ddff; font-size: 12px; font-weight: 800; }

/* ── PvP 模式 ─────────────────────────────────────────────── */
.pvp-lobby { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-top: 12px; }
.pvp-panel {
  background: var(--panel); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 30px 24px; text-align: center;
  box-shadow: var(--shadow), var(--inset-glow);
  transition: border-color .18s, box-shadow .18s;
}
.pvp-panel:hover { border-color: var(--border-accent); box-shadow: var(--shadow), 0 0 32px rgba(91,140,255,.12); }
.pvp-panel-icon { font-size: 42px; margin-bottom: 10px; }
.pvp-panel h2 { margin: 8px 0 6px; }
.pvp-panel .subtitle { margin-bottom: 16px; }
.pvp-code-input {
  display: block; width: 100%; box-sizing: border-box; margin: 14px 0;
  padding: 13px; font-size: 22px; letter-spacing: 7px; text-align: center;
  text-transform: uppercase; font-weight: 700;
  background: rgba(6,9,23,.7); color: var(--text);
  border: 1px solid var(--border-2); border-radius: 12px;
  transition: border-color .18s, box-shadow .18s;
}
.pvp-code-input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(91,140,255,.18); }
.pvp-room-bar {
  display: flex; align-items: center; justify-content: space-between;
  background: var(--panel-2); border: 1px solid var(--border);
  border-radius: 12px; padding: 10px 18px; margin-bottom: 14px;
}
.pvp-code { font-size: 20px; letter-spacing: 5px; font-weight: 800;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text; background-clip: text; color: transparent; }
.pvp-char-grid { display: grid; grid-template-columns: repeat(auto-fill,minmax(118px,1fr)); gap: 12px; margin: 14px 0; }
.pvp-char {
  background: var(--panel); border: 2px solid var(--border);
  border-radius: 14px; padding: 14px 10px; cursor: pointer;
  text-align: center; color: var(--text);
  transition: border-color .16s, transform .14s, box-shadow .16s;
  box-shadow: var(--shadow-sm);
}
.pvp-char:hover:not(:disabled) { transform: translateY(-3px); border-color: var(--border-accent); box-shadow: var(--shadow), 0 0 0 1px var(--border-accent); }
.pvp-char.picked { border-color: var(--accent); box-shadow: 0 0 20px var(--accent-glow), 0 0 0 1px var(--accent); }
.pvp-char:disabled { opacity: .5; cursor: default; }
.pvp-char-art img { width: 64px; height: 64px; object-fit: contain; }
.pvp-char-name { font-weight: 700; margin-top: 8px; font-size: 13px; }
.pvp-char-stats { margin-top: 4px; }

/* PvP arena */
.pvp-arena {
  position: relative; display: grid; grid-template-columns: 1fr auto 1fr;
  align-items: center; gap: 12px; margin-bottom: 16px; overflow: hidden;
  background:
    radial-gradient(ellipse 80% 70% at 50% 50%, rgba(91,140,255,.07), transparent 70%),
    var(--panel);
  border: 1px solid var(--border); border-radius: var(--radius);
  padding: 16px; box-shadow: var(--shadow), var(--inset-glow);
}
.pvp-fighter { position: relative; z-index: 2; text-align: center; padding: 10px; }
.pvp-fighter-art { display: inline-block; }
.pvp-fighter-art img { width: 100px; height: 100px; object-fit: contain; transition: filter .1s; }
.pvp-fighter.opp .pvp-fighter-art img { transform: scaleX(-1); }
.pvp-fighter.you .pvp-fighter-art.lunge { animation: lunge .34s ease; }
.pvp-fighter.opp .pvp-fighter-art.lunge { animation: lunge .34s ease reverse; }
.pvp-fighter-art.hit      { animation: hit .26s ease; }
.pvp-fighter-art.hit-crit { animation: hitCrit .32s ease; }
.pvp-arena.shake      { animation: shake .36s cubic-bezier(.36,.07,.19,.97); }
.pvp-arena.shake-hard { animation: shakeHard .44s cubic-bezier(.36,.07,.19,.97); }
.pvp-fighter-name { font-weight: 700; margin-top: 6px; font-size: 14px; }
.pvp-vs {
  font-size: 22px; font-weight: 800;
  color: var(--muted); text-shadow: 0 0 14px rgba(91,140,255,.4);
}
.pvp-combo { font-size: 12px; color: #ff9a3c; font-weight: 700; }
.pvp-progress { margin-top: 6px; font-size: 12px; color: var(--muted); }
.pvp-dmg {
  position: absolute; top: 28%; left: 50%; transform: translateX(-50%);
  font-weight: 800; font-size: 22px; color: #ffd23a; pointer-events: none;
  text-shadow: 0 2px 6px #000; animation: pvpDmgRise .85s ease-out forwards;
}
.pvp-dmg.crit { font-size: 30px; color: #ff5d3a; }
.pvp-dmg.self { color: var(--bad); }
@keyframes pvpDmgRise {
  0%  { opacity:0; transform:translate(-50%,0) scale(.6); }
  20% { opacity:1; transform:translate(-50%,-16px) scale(1.1); }
  100%{ opacity:0; transform:translate(-50%,-50px) scale(1); }
}
/* PvP item bar */
#pvpItemToast {
  text-align: center; padding: 8px 16px; margin: 6px 0;
  background: linear-gradient(135deg, rgba(245,196,81,.18), rgba(255,120,40,.14));
  border: 1px solid rgba(245,196,81,.35);
  border-radius: 10px; font-size: 14px; font-weight: 600;
  animation: flashIn .25s ease;
}
#pvpItemBar .btn { margin: 0 auto; }

/* PvP result */
.pvp-result { display: grid; grid-template-columns: 1fr auto 1fr; gap: 16px; align-items: center; margin: 22px 0; }
.pvp-result-col {
  background: var(--panel); border: 1px solid var(--border);
  border-radius: 14px; padding: 18px;
  transition: border-color .18s, box-shadow .18s;
  box-shadow: var(--shadow-sm);
}
.pvp-result-col.win {
  border-color: rgba(245,196,81,.5);
  box-shadow: 0 0 22px rgba(245,196,81,.35), var(--shadow-sm);
  background: linear-gradient(135deg, rgba(245,196,81,.06), var(--panel));
}
.pvp-result-name { font-weight: 800; font-size: 17px; margin-bottom: 4px; }
.pvp-result-vs { font-weight: 800; color: var(--muted); font-size: 20px; text-align: center; }
.pvp-result-stat { margin-top: 10px; font-size: 15px; }

/* ── 商城 ─────────────────────────────────────────────────── */
.coin-gain {
  margin-top: 12px; padding: 12px 18px; border-radius: 12px;
  background: rgba(245,196,81,.1); border: 1px solid rgba(245,196,81,.28);
  display: flex; align-items: center; gap: 12px; justify-content: center; flex-wrap: wrap;
  box-shadow: 0 0 20px rgba(245,196,81,.1);
}
.coin-gain-total { font-size: 20px; font-weight: 800; color: var(--gold); }
.wallet-card {
  display: flex; align-items: center; gap: 18px;
  background: linear-gradient(135deg, rgba(42,36,16,.9), rgba(22,24,43,.9));
  border: 1px solid rgba(245,196,81,.3); border-radius: var(--radius);
  padding: 22px 28px; margin-bottom: 22px;
  box-shadow: 0 0 32px rgba(245,196,81,.1), var(--shadow);
}
.wallet-coin { font-size: 46px; line-height: 1; }
.wallet-balance { font-size: 34px; font-weight: 800; color: var(--gold); text-shadow: 0 0 20px var(--gold-glow); }
.shop-grid { display: grid; grid-template-columns: repeat(auto-fill,minmax(180px,1fr)); gap: 16px; }
.shop-item {
  background: var(--panel); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 20px 16px; text-align: center;
  display: flex; flex-direction: column; gap: 8px;
  transition: border-color .18s, transform .18s, box-shadow .18s;
  box-shadow: var(--shadow-sm), var(--inset-glow);
}
.shop-item:hover { transform: translateY(-3px); border-color: var(--border-accent); box-shadow: var(--shadow), 0 0 0 1px var(--border-accent); }
.shop-item.owned  { opacity: .8; }
.shop-item-icon   { font-size: 40px; }
.shop-item-name   { font-weight: 700; }
.shop-item-desc   { min-height: 34px; color: var(--muted); font-size: 13px; }
.shop-item-foot   { margin-top: auto; padding-top: 10px; }
.shop-empty       { padding: 52px 20px; line-height: 1.9; }
.shop-section     { margin: 6px 0 4px; font-size: 18px; font-weight: 700; }
.char-item { position: relative; }
.char-item.equipped { border-color: var(--accent); box-shadow: 0 0 0 2px var(--accent), 0 0 22px var(--accent-glow); }
.char-badge {
  position: absolute; top: 8px; right: 8px;
  background: var(--accent); color: #fff; font-size: 11px; font-weight: 700;
  padding: 2px 8px; border-radius: 999px;
  box-shadow: 0 2px 8px var(--accent-glow);
}

/* ── 响应式 ───────────────────────────────────────────────── */
/* ── 无尽模式：介绍文本 / 战斗提示 ─────────────────────── */
.crit-copy  { color: #ffd23a; font-weight: 700; text-shadow: 0 0 10px rgba(255,210,58,.5); }
.boss-copy  { color: #ff6a4d; font-weight: 700; }
.arcane-copy{ color: #d5a2ff; font-weight: 700; }
.flash-combo{ background: linear-gradient(135deg,var(--accent),var(--accent-2));
  -webkit-background-clip:text; background-clip:text; color:transparent; font-weight:800; }
.flash-crit { color: #ffd23a; font-weight: 800; text-shadow: 0 0 8px rgba(255,210,58,.7); }
.flash-kill { color: var(--ok); font-weight: 800; }

/* ── 怪物立绘卡片（canvas art card in endless.js） ───────── */
.monster-art-card {
  cursor: default; transition: transform .15s, filter .15s, opacity .3s;
  display: inline-flex; align-items: center; justify-content: center;
}
.monster-art-card.boss-card { box-shadow: 0 0 36px currentColor; }

/* ── 杂项工具类 ─────────────────────────────────────────── */
.coin-gain-detail { color: var(--muted); font-size: 13px; margin-top: 4px; }
.error-type-stats, .category-stats { display: flex; flex-direction: column; gap: 10px; }
.record[style*="border-left"] { padding-left: 16px; }

@media (max-width: 640px) {
  header.nav { flex-direction: column; align-items: flex-start; height: auto; padding: 12px 18px; gap: 8px; }
  .nav .links { flex-wrap: wrap; gap: 8px 12px; }
  .pvp-lobby { grid-template-columns: 1fr; }
  .pvp-result { grid-template-columns: 1fr; }
  .pvp-result-vs { display: none; }
  .pvp-fighter-art img { width: 70px; height: 70px; }
  .board-stats { grid-template-columns: repeat(2,1fr); }
  .run-time { display: none; }
  .battle-stage { padding: 14px 10px 12px; gap: 6px; min-height: 185px; }
  .fighter.monster.boss img { transform: scaleX(-1) scale(1.35); }
  .combo-meter { min-width: 84px; padding: 4px 8px; }
  .combo-count { font-size: 17px; }
  .dmg-float { font-size: 18px; }
  .dmg-float.crit { font-size: 26px; }
  .mage-character { width: 106px; height: 128px; }
  .battle-intro .fighter.big.mage-character { width: 124px; height: 148px; }
  .arcane-guard-status { top: 7px; min-width: 0; max-width: 72%; padding: 5px 9px; }
  .pvp-arena { padding: 10px 8px; }
  .form-card { padding: 26px 20px; }
  h1 { font-size: 22px; }
  .stat .num { font-size: 24px; }
}