/* ===== 星空善学 · 英语角（与药学分区独立的视觉体系）===== */
:root {
  --en: #22d3ee;
  --en2: #67e8f9;
  --en-dim: rgba(34,211,238,0.14);
  --ok: #34d399;
  --bad: #f87171;
}

/* 顶部英语角渐变条，用于和药学紫金主色区分 */
.en-stripe {
  height: 3px; width: 100%;
  background: linear-gradient(90deg, var(--en), var(--en2), var(--en));
  opacity: 0.85;
}

.en-hero {
  text-align: center; padding: 34px 20px 18px; position: relative; z-index: 1;
}
.en-hero .tag {
  display: inline-block; font-size: 0.72rem; letter-spacing: 2px;
  color: var(--en); border: 1px solid rgba(34,211,238,0.4);
  padding: 3px 12px; border-radius: 999px; margin-bottom: 14px;
}
.en-hero h1 {
  font-size: 2rem; margin-bottom: 10px;
  background: linear-gradient(135deg, var(--en2), #a5f3fc);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}
.en-hero p { color: var(--text2); max-width: 560px; margin: 0 auto; line-height: 1.8; font-size: 0.95rem; }
.en-hero .src { color: var(--text3); font-size: 0.78rem; margin-top: 10px; }

/* ===== 主面板 ===== */
.en-wrap {
  max-width: 860px; margin: 0 auto; padding: 8px 20px 50px;
  position: relative; z-index: 1;
}
.en-panel {
  background: var(--card); border: 1px solid var(--border);
  border-radius: 16px; overflow: hidden;
  box-shadow: 0 18px 50px rgba(0,0,0,0.35);
}

/* 模式选择 */
.en-modes {
  display: flex; gap: 8px; flex-wrap: wrap;
  padding: 14px 16px; border-bottom: 1px solid var(--border);
  background: linear-gradient(180deg, rgba(34,211,238,0.06), transparent);
}
.en-chip {
  padding: 6px 14px; border-radius: 999px; font-size: 0.82rem;
  background: var(--bg2); border: 1px solid var(--border);
  color: var(--text2); cursor: pointer; transition: all 0.15s;
}
.en-chip:hover { color: var(--text); border-color: var(--en); }
.en-chip.on { background: var(--en-dim); border-color: var(--en); color: var(--en2); font-weight: 600; }

/* HUD */
.en-hud {
  display: flex; align-items: center; gap: 14px;
  padding: 14px 16px 10px;
}
.en-bar {
  flex: 1; height: 10px; border-radius: 999px;
  background: var(--bg3); overflow: hidden; position: relative;
}
.en-bar span {
  display: block; height: 100%; width: 0%;
  background: linear-gradient(90deg, var(--en), var(--en2));
  border-radius: 999px; transition: width 0.35s ease;
}
.en-hud-stat {
  display: flex; align-items: center; gap: 5px;
  font-size: 0.82rem; color: var(--text2); white-space: nowrap;
  font-variant-numeric: tabular-nums;
}
.en-hud-stat b { color: var(--gold); font-size: 0.9rem; }
.en-hud-stat.time b { color: var(--en2); }
.en-hud-stat.time.warn b { color: var(--bad); }
.en-hud-stat .ic { font-size: 0.95rem; }
.en-icon-btn {
  width: 30px; height: 30px; border-radius: 50%;
  border: 1px solid var(--border); background: var(--bg2);
  color: var(--text2); cursor: pointer; font-size: 0.85rem; line-height: 1;
  display: inline-flex; align-items: center; justify-content: center;
  transition: all 0.15s;
}
.en-icon-btn:hover { color: var(--en2); border-color: var(--en); }
.en-icon-btn.txt { width: auto; border-radius: 999px; padding: 0 11px; font-size: 0.74rem; }
.en-icon-btn.txt.off { opacity: 0.45; }

/* ===== 棋盘 ===== */
.en-board-wrap { position: relative; padding: 6px 16px 18px; min-height: 372px; }
.en-board {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 10px;
  min-width: 0;
  transition: opacity 0.35s;
}
.en-tile {
  min-height: 58px; padding: 8px 12px;
  border-radius: 12px; border: 2px solid var(--border);
  background: var(--bg2); color: var(--text);
  display: flex; align-items: center; justify-content: center;
  text-align: center; cursor: pointer; user-select: none;
  transition: transform 0.12s, border-color 0.15s, background 0.15s, opacity 0.25s;
  line-height: 1.35;
  min-width: 0; overflow-wrap: anywhere;
}
.en-tile:hover:not(.done) { border-color: var(--en); background: var(--card2); }
.en-tile:active:not(.done) { transform: scale(0.97); }
.en-tile .cn { font-size: 1rem; font-weight: 500; }
.en-tile .en { font-size: 1.02rem; font-weight: 600; letter-spacing: 0.3px; }
.en-tile .pos {
  font-size: 0.68rem; color: var(--text3); margin-right: 5px;
  align-self: center; font-style: italic;
}
.en-tile.sel {
  border-color: var(--en); background: var(--en-dim);
  box-shadow: 0 0 0 3px rgba(34,211,238,0.15);
}
.en-tile.ok {
  border-color: var(--ok); background: rgba(52,211,153,0.16); color: #bbf7d0;
}
.en-tile.bad {
  border-color: var(--bad); background: rgba(248,113,113,0.16); color: #fecaca;
  animation: en-shake 0.32s;
}
.en-tile.done {
  opacity: 0.28; cursor: default; pointer-events: none;
  border-color: rgba(30,74,102,0.6); background: var(--bg);
}
@keyframes en-shake {
  0%,100% { transform: translateX(0); }
  25% { transform: translateX(-5px); }
  75% { transform: translateX(5px); }
}

/* ===== 结算层 ===== */
.en-overlay {
  position: absolute; inset: 0; z-index: 5;
  background: rgba(11,22,34,0.88); backdrop-filter: blur(6px);
  display: none; align-items: center; justify-content: center;
  border-radius: 0 0 16px 16px;
  padding: 12px;
  overflow-y: auto;
}
.en-overlay.show { display: flex; }
.en-result { text-align: center; padding: 10px 20px; }
.en-result .big { font-size: 2.2rem; margin-bottom: 6px; }
.en-result h2 { font-size: 1.3rem; margin-bottom: 6px; color: var(--en2); }
.en-result .sub { color: var(--text2); font-size: 0.86rem; margin-bottom: 16px; }
.en-result-stats {
  display: flex; gap: 10px; justify-content: center; margin-bottom: 18px;
}
.en-result-stat {
  background: var(--bg2); border: 1px solid var(--border);
  border-radius: 10px; padding: 10px 16px; min-width: 76px;
}
.en-result-stat .v { font-size: 1.15rem; font-weight: 700; color: var(--en2); }
.en-result-stat .l { font-size: 0.72rem; color: var(--text3); margin-top: 2px; }
.en-result .acts { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; }
.en-result .acts .btn { padding: 9px 22px; font-size: 0.9rem; }

/* ===== 词库 ===== */
.en-vocab {
  max-width: 860px; margin: 26px auto 0; padding: 0 20px 60px;
  position: relative; z-index: 1;
}
.en-vocab-head {
  display: flex; align-items: center; justify-content: space-between;
  gap: 12px; flex-wrap: wrap; margin-bottom: 12px;
}
.en-vocab-head h2 { font-size: 1.1rem; color: var(--text); }
.en-vocab-head h2 small { color: var(--text3); font-weight: 400; font-size: 0.78rem; margin-left: 6px; }
.en-search {
  display: flex; gap: 8px; align-items: center; flex: 1; min-width: 220px;
}
.en-search input {
  flex: 1; padding: 8px 14px; border-radius: 999px;
  background: var(--card); border: 1px solid var(--border);
  color: var(--text); font-size: 0.86rem; outline: none;
}
.en-search input:focus { border-color: var(--en); }
.en-list {
  background: var(--card); border: 1px solid var(--border);
  border-radius: 14px; overflow: hidden;
}
.en-row {
  display: grid; grid-template-columns: 34px 1.1fr 0.5fr 2fr 64px;
  gap: 10px; align-items: center;
  padding: 9px 16px; border-bottom: 1px solid rgba(30,74,102,0.32);
  font-size: 0.88rem;
}
.en-row:last-child { border-bottom: none; }
.en-row.head {
  color: var(--text3); font-size: 0.75rem; letter-spacing: 0.5px;
  background: var(--bg2);
}
.en-row .idx { color: var(--text3); font-size: 0.75rem; }
.en-row .w { font-weight: 600; color: var(--text); overflow-wrap: anywhere; cursor: pointer; }
.en-row .w:hover { color: var(--en2); }
.en-row .lv { font-size: 0.7rem; color: var(--en); border: 1px solid rgba(34,211,238,0.35);
  padding: 1px 7px; border-radius: 999px; justify-self: start; }
.en-row .m { color: var(--text2); }
.en-row .f { color: var(--text3); text-align: right; font-size: 0.78rem; font-variant-numeric: tabular-nums; }
.en-more {
  display: block; width: 100%; padding: 12px; border: none; cursor: pointer;
  background: var(--bg2); color: var(--text2); font-size: 0.85rem;
}
.en-more:hover { color: var(--en2); }
.en-empty { padding: 26px; text-align: center; color: var(--text3); font-size: 0.86rem; }

@media (max-width: 640px) {
  .en-hero h1 { font-size: 1.5rem; }
  .en-tile { min-height: 52px; padding: 6px 8px; }
  .en-tile .cn { font-size: 0.9rem; }
  .en-tile .en { font-size: 0.92rem; }
  .en-row { grid-template-columns: 28px 1fr 0.5fr 1.4fr; }
  .en-row .f { display: none; }
  .en-hud { gap: 8px; flex-wrap: wrap; }
  .en-bar { order: 3; flex-basis: 100%; }
  .topbar { padding: 0 12px; }
  .logo { font-size: 1.05rem; }
  .topbar-stats { gap: 6px; }
}

@media (max-width: 480px) {
  .topbar .login-pill { display: none; }
  .en-wrap, .en-vocab { padding-left: 12px; padding-right: 12px; }
  .en-hero { padding-left: 12px; padding-right: 12px; }
  .en-board-wrap { padding-left: 10px; padding-right: 10px; }
  .en-result-stats { gap: 6px; flex-wrap: wrap; }
}

/* ===== 关卡选择 ===== */
.en-levelbar {
  padding: 14px 16px 12px;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(180deg, rgba(34,211,238,0.05), transparent);
}
.en-chapters { display: flex; gap: 6px; flex-wrap: wrap; }
.en-dots { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 12px; }
.en-dot {
  width: 34px; height: 34px; border-radius: 50%;
  border: 1px solid var(--border); background: var(--bg2);
  color: var(--text3); font-size: 0.78rem; font-weight: 600;
  cursor: pointer; display: inline-flex; align-items: center; justify-content: center;
  transition: all 0.15s;
}
.en-dot:hover { border-color: var(--en); color: var(--en2); }
.en-dot.done { border-color: rgba(52,211,153,0.5); color: var(--ok); background: rgba(52,211,153,0.1); }
.en-dot.on {
  border-color: var(--en); background: var(--en-dim); color: var(--en2);
  box-shadow: 0 0 0 3px rgba(34,211,238,0.15);
}
.en-levelline {
  display: flex; justify-content: space-between; align-items: baseline;
  gap: 10px; margin-top: 14px; flex-wrap: wrap;
}
.en-levelline #en-level-title { font-size: 0.92rem; color: var(--text); font-weight: 600; }
.en-levelline #en-level-sub { font-size: 0.78rem; color: var(--text3); }

/* ===== 准备 / 结算面板 ===== */
.en-ready { text-align: center; padding: 22px 18px; max-width: 520px; }
.en-ready-title { font-size: 1.3rem; font-weight: 700; color: var(--en2); margin-bottom: 6px; }
.en-ready-sub { font-size: 0.86rem; color: var(--text2); margin-bottom: 14px; }
.en-ready-words {
  font-size: 0.78rem; color: var(--text3); line-height: 2;
  max-height: 96px; overflow-y: auto; margin: 0 auto 18px;
  padding: 0 6px;
}
.en-mistakes {
  font-size: 0.78rem; color: var(--text3); margin: 4px 0 16px; line-height: 2;
}
.en-mistake {
  display: inline-block; margin: 3px 4px; padding: 2px 9px;
  border: 1px solid var(--border); border-radius: 999px; color: var(--text2);
}
.en-tile.gone {
  border-color: transparent; background: transparent;
  pointer-events: none; cursor: default;
}