/* ===== ArkTS 练习场 样式 ===== */
:root {
  --bg: #f4f6fa;
  --card: #ffffff;
  --ink: #1f2733;
  --ink-2: #5a6a7d;
  --line: #e2e8f0;
  --accent: #2f6fed;
  --accent-soft: #e8f0fe;
  --good: #1d9e63;
  --good-soft: #e6f6ee;
  --bad: #d64545;
  --bad-soft: #fdecec;
  --hot: #e05252;
  --warm: #e88a2e;
  --cool: #3f8fd6;
  --cold: #94a6b8;
  --radius: 12px;
  --shadow: 0 1px 3px rgba(20, 35, 60, .08), 0 6px 18px rgba(20, 35, 60, .05);
  font-size: 15px;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--ink);
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  line-height: 1.6;
  min-height: 100vh;
}

/* ---------- 头部 / 导航 ----------
 * 标题区不粘住、随页面滚动自然移出（=自动隐藏，无任何高度动画，不会抖动）；
 * Tab 导航栏是独立 grid 行，position:sticky 相对整页吸顶，始终可用。 */
.app-header { background: #fff; }
.brand { padding: 14px 20px 4px; }
.brand h1 { margin: 0; font-size: 1.25rem; }
.brand .sub { margin: 2px 0 0; font-size: .82rem; color: var(--ink-2); }
.tabbar {
  grid-column: 1 / -1;
  position: sticky;
  top: 0;
  z-index: 20;
  background: #fff;
  border-bottom: 1px solid var(--line);
  display: flex;
  gap: 4px;
  padding: 8px 14px 10px;
  overflow-x: auto;
}
.tabbar button {
  border: 0; background: transparent; color: var(--ink-2);
  padding: 8px 16px; border-radius: 999px; cursor: pointer;
  font-size: .92rem; white-space: nowrap; transition: .15s;
}
.tabbar button:hover { background: var(--accent-soft); color: var(--accent); }
.tabbar button.active { background: var(--accent); color: #fff; font-weight: 600; }

/* ---------- 主体布局 ---------- */
.app-main { max-width: 980px; margin: 0 auto; padding: 20px 16px 40px; }
.app-footer { max-width: 980px; margin: 0 auto; padding: 0 16px 26px; color: var(--ink-2); font-size: .8rem; }
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 18px; margin-bottom: 16px;
}
.card h3 { margin: 0 0 10px; font-size: 1.02rem; }
.row { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
.grow { flex: 1 1 auto; }
.muted { color: var(--ink-2); font-size: .85rem; }
.small { font-size: .82rem; }

/* ---------- 控件 ---------- */
button, .btn {
  border: 1px solid var(--line); background: #fff; color: var(--ink);
  border-radius: 10px; padding: 8px 16px; cursor: pointer; font-size: .9rem;
  transition: .15s;
}
button:hover { border-color: var(--accent); color: var(--accent); }
.btn-primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn-primary:hover { filter: brightness(1.08); color: #fff; }
.btn-good { background: var(--good); border-color: var(--good); color: #fff; }
.btn-good:hover { filter: brightness(1.08); color: #fff; }
.btn-ghost { background: transparent; border-color: transparent; color: var(--ink-2); }
.btn-danger { color: var(--bad); border-color: #eec9c9; }
button:disabled { opacity: .45; cursor: not-allowed; }
select, textarea, input[type="text"] {
  border: 1px solid var(--line); border-radius: 10px; padding: 8px 10px;
  font: inherit; color: var(--ink); background: #fff; outline: none;
}
select:focus, textarea:focus, input[type="text"]:focus { border-color: var(--accent); }
textarea { width: 100%; resize: vertical; font-family: Consolas, "Courier New", monospace; line-height: 1.5; }
input[type="checkbox"] { width: 1.05em; height: 1.05em; accent-color: var(--accent); }

/* ---------- 客观题 ---------- */
.opt-group { display: flex; flex-direction: column; gap: 8px; margin: 12px 0; }
.opt {
  display: flex; gap: 10px; align-items: flex-start; text-align: left;
  border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px;
  background: #fff; cursor: pointer; transition: .12s;
}
.opt:hover { border-color: var(--accent); }
.opt .key {
  flex: none; width: 22px; height: 22px; border-radius: 6px; background: var(--bg);
  display: inline-flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: .8rem; color: var(--ink-2);
}
.opt.selected { border-color: var(--accent); background: var(--accent-soft); }
.opt.selected .key { background: var(--accent); color: #fff; }
.opt.correct { border-color: var(--good); background: var(--good-soft); }
.opt.correct .key { background: var(--good); color: #fff; }
.opt.wrong { border-color: var(--bad); background: var(--bad-soft); }
.opt.wrong .key { background: var(--bad); color: #fff; }
.opt.disabled { cursor: default; opacity: .85; }
.explain {
  border-left: 4px solid var(--accent); background: var(--accent-soft);
  border-radius: 8px; padding: 10px 12px; margin-top: 12px;
}
.explain .good-t { color: var(--good); font-weight: 700; }
.explain .bad-t { color: var(--bad); font-weight: 700; }
.tag-chip {
  display: inline-block; background: var(--bg); color: var(--ink-2);
  border-radius: 6px; padding: 1px 8px; font-size: .75rem; margin-right: 6px;
}
.diff { font-size: .75rem; }
.diff1 { color: var(--good); } .diff2 { color: var(--warm); } .diff3 { color: var(--bad); }

.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(120px, 1fr)); gap: 10px; }
.stat-tile { background: var(--bg); border-radius: 10px; padding: 10px; text-align: center; }
.stat-tile b { display: block; font-size: 1.2rem; }

/* ---------- 题库管理（含自定义题库导入列表） ---------- */
.bank-item { border: 1px solid var(--line); border-radius: 10px; padding: 12px; margin-bottom: 10px; }
.bank-item .meta { font-size: .8rem; color: var(--ink-2); }
table.tbl { width: 100%; border-collapse: collapse; font-size: .88rem; }
table.tbl th, table.tbl td { border-bottom: 1px solid var(--line); padding: 7px 8px; text-align: left; }
table.tbl th { color: var(--ink-2); font-weight: 600; }

/* ---------- 其他 ---------- */
.toast {
  position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%);
  background: #1f2733; color: #fff; padding: 10px 18px; border-radius: 10px;
  box-shadow: 0 6px 20px rgba(0,0,0,.25); z-index: 99; font-size: .88rem;
  max-width: 80vw;
}
.toast.err { background: var(--bad); }
.center { text-align: center; }
.mt { margin-top: 12px; } .mb { margin-bottom: 12px; }
.hr { border: 0; border-top: 1px solid var(--line); margin: 14px 0; }
@media (max-width: 640px) {
  .app-main { padding: 12px 10px 30px; }
  .card { padding: 14px; }
}

/* ---------- 语法快练：题型/模式分段切换 ---------- */
.seg {
  display: inline-flex;
  border: 1px solid var(--line);
  border-radius: 10px;
  overflow: hidden;
  background: #fff;
}
.seg button {
  border: 0;
  border-radius: 0;
  background: #fff;
  color: var(--ink-2);
  padding: 6px 14px;
  font-size: .85rem;
  white-space: nowrap;
}
.seg button + button { border-left: 1px solid var(--line); }
.seg button:hover { color: var(--accent); }
.seg button.active { background: var(--accent); color: #fff; }
.sg-toolbar { padding: 12px 16px; }

/* ---------- 语法快练：填空题 ---------- */
.fill-input {
  flex: 1 1 260px;
  font-family: Consolas, "Courier New", monospace;
  font-size: .95rem;
  letter-spacing: .3px;
}
.fill-input.fill-ok {
  border-color: var(--good);
  background: var(--good-soft);
  color: var(--good);
  font-weight: 700;
}
.code-inline {
  font-family: Consolas, "Courier New", monospace;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 1px 8px;
  font-size: .85rem;
  color: var(--accent);
}

/* ---------- 语法快练：大号记分板 ---------- */
.sb {
  position: relative;
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr 1.1fr;
  gap: 12px 18px;
  align-items: start;
  background:
    radial-gradient(1200px 260px at 0% -80%, rgba(255, 180, 60, .10), transparent 60%),
    #fff;
  overflow: hidden;
}
.sb-col { display: flex; flex-direction: column; }
.sb-label {
  font-size: .72rem;
  color: var(--ink-2);
  letter-spacing: 1px;
  font-weight: 700;
}
.sb-num {
  font-size: 2.2rem;
  font-weight: 800;
  line-height: 1.1;
  font-variant-numeric: tabular-nums;
  display: inline-block;
}
.sb-pts { color: #d97706; }
.sb-str { color: #e05252; }
.sb-cor { color: var(--accent); }
.sb-day { font-size: 1.02rem; font-weight: 700; color: var(--ink); line-height: 1.5; }
.sb-sub { font-size: .76rem; color: var(--ink-2); margin-top: 2px; }
.sb-today { align-items: flex-start; }

/* 命中弹跳 */
@keyframes sbPop {
  0% { transform: scale(1); }
  35% { transform: scale(1.28); }
  100% { transform: scale(1); }
}
.sb-num.pop { animation: sbPop .42s ease; }

/* 全屏居中加分动画（覆盖在页面上层，不挡操作） */
.fx-burst {
  position: fixed;
  inset: 0;
  z-index: 1000;
  pointer-events: none;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}
.fx-main {
  font-size: clamp(2.6rem, 9vw, 5.2rem);
  font-weight: 900;
  color: #d97706;
  line-height: 1.05;
  letter-spacing: 1px;
  text-shadow: 0 2px 0 #fff, 0 8px 26px rgba(217, 119, 6, .4);
  animation: fxMain .9s cubic-bezier(.2, 1.7, .4, 1) both;
}
.fx-big .fx-main {
  color: #e05252;
  font-size: clamp(3.2rem, 12vw, 7rem);
  text-shadow: 0 2px 0 #fff, 0 10px 30px rgba(224, 82, 82, .45);
}
.fx-sub {
  margin-top: 8px;
  font-size: 1.2rem;
  color: #7a4a12;
  font-weight: 700;
  opacity: 0;
  animation: fxMain .6s ease both;
  animation-delay: .06s;
}
.fx-em {
  position: absolute;
  left: 50%;
  top: 50%;
  font-size: 2rem;
  transform: translate(-50%, -50%);
  animation: fxFly .95s ease-out both;
  animation-delay: calc(var(--i) * 22ms);
}
.fx-big .fx-em { font-size: 2.5rem; }
@keyframes fxMain {
  0% { opacity: 0; transform: scale(.25) translateY(16px); }
  28% { opacity: 1; transform: scale(1.22) translateY(0); }
  52% { transform: scale(.94); }
  72% { transform: scale(1.06); }
  100% { opacity: 1; transform: scale(1); }
}
@keyframes fxFly {
  0% { opacity: 0; transform: translate(-50%, -50%) scale(.4); }
  14% { opacity: 1; }
  100% {
    opacity: 0;
    transform: translate(calc(-50% + var(--dx)), calc(-50% + var(--dy))) scale(1.25) rotate(24deg);
  }
}
@media (max-width: 640px) {
  .fx-main { font-size: 3rem; }
  .fx-big .fx-main { font-size: 3.4rem; }
}

/* ---------- 玩家栏 ---------- */
.pbar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
}
.pbar-av {
  flex: none;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, #fff3d6, #ffe1b3);
  border: 1px solid #f2d48f;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}
.pbar-mid { min-width: 0; }
.pbar-name {
  font-weight: 800;
  font-size: 1.05rem;
  display: flex;
  align-items: center;
  gap: 8px;
}
.pbar-tag {
  font-size: .68rem;
  font-weight: 700;
  color: var(--accent);
  background: var(--accent-soft);
  border-radius: 6px;
  padding: 1px 7px;
  letter-spacing: 1px;
}
.pbar-sub { font-size: .76rem; color: var(--ink-2); margin-top: 1px; }
.active-board { border-color: var(--accent); color: var(--accent); background: var(--accent-soft); }

/* ---------- 积分榜 ---------- */
.bd-tbl td, .bd-tbl th { padding: 7px 10px; }
.bd-tbl td:last-child { text-align: left; }
.bd-me td {
  background: var(--accent-soft);
  font-weight: 600;
}
.bd-me td:first-child { border-radius: 8px 0 0 8px; }
.bd-me td:last-child { border-radius: 0 8px 8px 0; }
.bd-click { cursor: pointer; }
.bd-click:hover td { background: #f2f6fd; }

/* ---------- 昵称弹窗 ---------- */
.nm-mask {
  position: fixed;
  inset: 0;
  z-index: 900;
  background: rgba(15, 23, 42, .45);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
}
.nm-box {
  width: min(440px, 92vw);
  background: #fff;
  border-radius: 14px;
  padding: 20px;
  box-shadow: 0 20px 60px rgba(15, 23, 42, .3);
}

/* ---------- 侧栏积分榜布局 ---------- */
body {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
}
.app-header, .app-footer { grid-column: 1 / -1; }
.app-main { min-width: 0; }

.side-board {
  grid-column: 2;
  align-self: start;
  position: sticky;
  top: 64px;                 /* 吸在吸顶 Tab 栏下方 */
  width: 332px;
  margin: 0 14px 16px 6px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 14px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  max-height: calc(100vh - 76px);
  overflow: hidden;
  transition: width .18s ease;
  z-index: 5;
}
.side-expanded {
  display: flex;
  flex-direction: column;
  height: 100%;
  min-height: 0;
}
.side-head {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  border-bottom: 1px solid var(--line);
}
.side-head h3 { margin: 0; font-size: .98rem; flex: 1; white-space: nowrap; }
.side-mode { flex: none; }
.side-tools {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-bottom: 1px solid var(--line);
}
.side-body {
  overflow-y: auto;
  padding: 8px 10px 12px;
  flex: 1;
  min-height: 0;
}

/* 折叠态：只留一个竖条入口 */
.side-collapsed { display: none; }
.side-board.collapsed { width: 52px; overflow: visible; }
.side-board.collapsed .side-expanded { display: none; }
.side-board.collapsed .side-collapsed {
  display: flex;
  height: 100%;
}
.side-tab {
  border: 0;
  background: transparent;
  cursor: pointer;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 0;
  color: var(--accent);
  border-radius: 12px;
}
.side-tab:hover { background: var(--accent-soft); }
.side-tab-icon { font-size: 1.25rem; }
.side-tab-text {
  writing-mode: vertical-rl;
  font-weight: 700;
  font-size: .82rem;
  letter-spacing: 3px;
}

@media (max-width: 1100px) {
  body { grid-template-columns: minmax(0, 1fr); }
  .side-board {
    grid-column: 1;
    position: static;
    width: auto;
    max-height: none;
    margin: 0 12px 14px;
    order: 5;
  }
  .side-board.collapsed { width: auto; }
}
@media (max-width: 760px) {
  .sb { grid-template-columns: 1fr 1fr; }
}