/* typing-practice · 浅绿清新版
   浅色：纸白 + 淡绿灰，主按钮/选中嫩绿 + 深绿字；
   深色：中性炭灰（不发绿）+ 薄荷绿点缀，按钮同步嫩绿。 */
:root {
  color-scheme: light;
  --bg: #f7f8f5;
  --card: #ffffff;
  --panel: #ecf3e9;
  --border: #d9e2d3;
  --border-soft: #e7eee1;
  --text: #1c231d;
  --text-2: #37473a;
  --muted: #414b42;
  --accent: #c9f0d4;
  --accent-hover: #a9e6bb;
  --accent-ink: #0b3d20;
  --accent-ring: rgba(34, 197, 94, .25);
  --caret: #16a34a;
  --chart-line: #c2410c;
  --chart-fill: rgba(194, 65, 12, .10);
  --ok-bg: transparent;
  --ok-ink: #15803d;
  --err-fg: #b42318;
  --err-bg: #fdeceb;
  --primary-bg: #86efac;
  --primary-fg: #0b3d20;
  --primary-hover: #6fe39a;
  --radius: 10px;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
}
[data-theme="dark"] {
  color-scheme: dark;
  --bg: #161719;
  --card: #1e1f24;
  --panel: #24262c;
  --border: #35383f;
  --border-soft: #2a2d34;
  --text: #e8e8e4;
  --text-2: #c6c6c0;
  --muted: #9c9c95;
  --accent: #2e4433;
  --accent-hover: #3a5a44;
  --accent-ink: #d9f5e2;
  --accent-ring: rgba(134, 239, 172, .25);
  --caret: #6ee7a0;
  --chart-line: #e2b714;
  --chart-fill: rgba(226, 183, 20, .12);
  --ok-bg: transparent;
  --ok-ink: #86efac;
  --err-fg: #ff9a9a;
  --err-bg: #3d1e1e;
  --primary-bg: #86efac;
  --primary-fg: #0b3d20;
  --primary-hover: #a7f3c9;
  --radius: 10px;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
}
* { box-sizing: border-box; }
::selection { background: var(--accent); color: var(--accent-ink); }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif; }
/* 顶栏：白底细线 + 毛玻璃微透，不抢戏 */
header.top {
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1.5px solid var(--border-soft);
  padding: 12px 20px; position: sticky; top: 0; z-index: 10;
}
.top-inner { max-width: 1048px; margin: 0 auto; display: flex; gap: 12px; align-items: center; flex-wrap: wrap; } /* 1048 = 练习区内容宽（1080-两侧16px），顶行与卡片左右对齐 */
.top-inner h1 { margin: 0; font-size: 19px; font-weight: 800; color: var(--text); }
.top-inner h1 img.logo { height: 1em; width: 1em; vertical-align: -0.12em; margin-right: 8px; }
.top-inner .sub { width: 100%; margin: 2px 0 0; font-size: 13px; color: var(--muted); }
.tabs { display: flex; gap: 8px; margin-left: auto; align-items: center; flex-wrap: wrap; }
.tabs button, .icon-btn {
  border: 1.5px solid var(--border); background: var(--card); color: var(--text-2);
  border-radius: 999px; padding: 7px 16px; font-size: 14px; font-weight: 600; cursor: pointer;
  transition: border-color .15s ease, background-color .15s ease, color .15s ease, transform .1s ease;
}
.tabs button.active { background: var(--primary-bg); border-color: var(--primary-bg); color: var(--primary-fg); }
.tabs button:not(.active):hover, .icon-btn:hover { border-color: var(--caret); color: var(--text); }
main { max-width: 1080px; margin: 18px auto 70px; padding: 0 16px; display: grid; gap: 16px; }
.card {
  background: var(--card); border: 1.5px solid var(--border-soft); border-radius: var(--radius); padding: 18px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, .03);
}
.card h2 { margin: 0 0 12px; font-size: 15px; font-weight: 800; color: var(--text); }
.section-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; margin-bottom: 10px; }
.section-head h2 { margin: 0; }
.hist-summary { font-size: 13px; color: var(--muted); font-weight: 600; margin-right: 4px; }
.row { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 860px) { .grid2 { grid-template-columns: 1fr; } }
/* 开关 */
label.switch {
  display: inline-flex; align-items: center; gap: 6px; font-size: 13px; font-weight: 600; color: var(--text);
  background: var(--card); border: 1.5px solid var(--border);
  padding: 6px 13px; border-radius: 999px; cursor: pointer; user-select: none;
}
label.switch input { width: 15px; height: 15px; accent-color: var(--caret); }
/* 按钮：主动作嫩绿 + 深字；次要白底深字 */
button.btn {
  border: 1.5px solid var(--border); background: var(--card); color: var(--text);
  border-radius: 8px; padding: 7px 14px; font-size: 14px; font-weight: 600; cursor: pointer;
  transition: border-color .15s ease, background-color .15s ease, color .15s ease, transform .08s ease;
}
button.btn:hover:not(:disabled) { border-color: var(--caret); }
button.btn:active:not(:disabled), .tabs button:active, .icon-btn:active { transform: translateY(1px); }
button.btn.primary { background: var(--primary-bg); border-color: var(--primary-bg); color: var(--primary-fg); font-weight: 800; }
button.btn.primary:hover:not(:disabled) { background: var(--primary-hover); border-color: var(--primary-hover); }
button.btn.danger { color: var(--err-fg); }
button.btn.danger:hover:not(:disabled) { border-color: var(--err-fg); background: var(--err-bg); }
button.btn:disabled { opacity: .5; cursor: not-allowed; }
select.sel, input.num {
  background: var(--card); color: var(--text);
  border: 1.5px solid var(--border); border-radius: 8px;
  padding: 7px 10px; font-size: 14px; max-width: 100%;
  transition: border-color .15s ease, box-shadow .15s ease;
}
select.sel:focus, input.num:focus { outline: none; border-color: var(--caret); box-shadow: 0 0 0 3px var(--accent-ring); }
/* 打字区：等宽大字（学 Monkeytype），未打深灰、打对纯黑+淡绿底、打错红 */
textarea.mono-input, textarea.ref-edit {
  width: 100%; border-radius: 10px; border: 2px solid var(--border);
  padding: 14px 16px; font-family: var(--mono);
  font-size: var(--pad-font, 17px); line-height: 1.9; letter-spacing: .3px;
  background: var(--card); color: var(--text); outline: none; resize: vertical;
  transition: border-color .15s ease, box-shadow .15s ease;
}
textarea.mono-input:focus, textarea.ref-edit:focus { border-color: var(--caret); box-shadow: 0 0 0 3px var(--accent-ring); }
textarea.mono-input { min-height: 220px; caret-color: var(--caret); white-space: pre-wrap; word-break: break-all; overflow-wrap: anywhere; }
textarea.ref-edit { min-height: 90px; font-size: 15px; background: var(--panel); font-family: inherit; letter-spacing: 0; }
textarea::placeholder { color: var(--muted); opacity: 1; }
#refView {
  background: var(--panel);
  border: 2px solid var(--border);
  border-radius: 10px;
  padding: 14px 16px; /* 与下方输入区一致，保证列对齐 */
  font-family: var(--mono);
  font-size: var(--pad-font, 17px);
  line-height: 1.9; letter-spacing: .3px;
  min-height: 110px;
  white-space: pre-wrap; word-break: break-all; overflow-wrap: anywhere; user-select: text;
  color: var(--muted);
}
#refView span { border-radius: 4px; }
#refView span.ok { background: transparent; color: var(--ok-ink); font-weight: 700; }
#refView span.err { background: var(--err-bg); color: var(--err-fg); font-weight: 700; }
#refView span.cur { background: transparent; box-shadow: inset 3px 0 0 var(--caret); border-radius: 0; animation: caretBlink 1.1s steps(1) infinite; }
#refView span.todo { color: var(--muted); }
@keyframes caretBlink { 0%, 60% { box-shadow: inset 3px 0 0 var(--caret); } 61%, 100% { box-shadow: inset 3px 0 0 transparent; } }
.progress { height: 8px; background: var(--border-soft); border-radius: 999px; overflow: hidden; margin-top: 10px; }
.progress > div { height: 100%; width: 0%; background: var(--caret); transition: width .2s; }
/* 数据 */
.dash { display: grid; grid-template-columns: repeat(6, 1fr); gap: 10px; margin-top: 4px; }
@media (max-width: 860px) { .dash { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 520px) { .dash { grid-template-columns: repeat(2, 1fr); } }
.metric { background: var(--panel); border: 1.5px solid var(--border-soft); border-radius: 10px; padding: 10px 8px; text-align: center; }
.metric .k { font-size: 13px; font-weight: 600; color: var(--muted); }
.metric .v { font-family: var(--mono); font-size: 18px; font-weight: 800; margin-top: 3px; font-variant-numeric: tabular-nums; color: var(--text); }
.metric .v small { font-family: inherit; font-size: 12px; font-weight: 600; color: var(--muted); }
.metric.hl { border-color: var(--caret); }
.metric.hl .v { color: var(--text); }
#errList, #slowList { margin: 8px 0 0; padding-left: 20px; font-size: 14px; color: var(--text-2); }
#errList code, #slowList code { font-family: var(--mono); background: var(--panel); border: 1px solid var(--border); border-radius: 5px; padding: 0 5px; color: var(--text); }
#msg { min-height: 22px; margin-top: 8px; font-size: 14px; font-weight: 600; color: var(--caret); }
#msg.warn { color: var(--err-fg); }
#msg.err { color: var(--err-fg); }
.statusbar { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 10px; font-size: 13px; font-weight: 600; color: var(--muted); font-variant-numeric: tabular-nums; }
.statusbar b { color: var(--text); font-size: 14px; }
.tip { font-size: 14px; line-height: 1.8; color: var(--text-2); background: var(--panel); border: 1.5px dashed var(--border); border-radius: 10px; padding: 11px 13px; margin-top: 12px; }
.tip code { background: var(--card); border: 1px solid var(--border); padding: 0 5px; border-radius: 5px; font-size: 12.5px; font-family: var(--mono); color: var(--text); }
table.hist { width: 100%; border-collapse: collapse; font-size: 14px; margin-top: 8px; color: var(--text); }
table.hist th, table.hist td { border-bottom: 1px solid var(--border-soft); padding: 8px 6px; text-align: left; font-variant-numeric: tabular-nums; }
table.hist th { color: var(--muted); font-size: 13px; }
#toast {
  position: fixed; left: 50%; bottom: 28px; transform: translateX(-50%) translateY(20px);
  background: var(--primary-bg); color: var(--primary-fg); font-weight: 600;
  font-size: 14px; padding: 10px 18px; border-radius: 999px;
  opacity: 0; pointer-events: none; transition: all .25s ease; z-index: 99;
  max-width: 92vw; white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
#toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
.chart-wrap { position: relative; height: 190px; margin-top: 10px; }
.chart-wrap canvas { width: 100% !important; height: 100% !important; }
footer { text-align: center; font-size: 13px; color: var(--muted); padding: 20px; }
.font-ctl { display: inline-flex; align-items: center; gap: 6px; font-size: 13px; font-weight: 600; color: var(--muted); }
.font-ctl input[type="range"] { accent-color: var(--caret); }
.font-ctl b { color: var(--text); }
.hidden { display: none !important; }
/* 练习区布局 */
.practice-card { padding-bottom: 14px; }
.practice-head { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin-bottom: 10px; }
.practice-head h2 { margin: 0; }
.head-hint { font-size: 13px; font-weight: 600; color: var(--muted); }
.timer-inline { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; margin-left: auto; }
.timer-inline .t { font-size: 13px; font-weight: 600; color: var(--muted); background: var(--panel); border: 1.5px solid var(--border-soft); border-radius: 999px; padding: 5px 11px; font-variant-numeric: tabular-nums; }
.timer-inline .t b { color: var(--text); font-family: var(--mono); }
.sample-row { margin-bottom: 8px; }
.custom-details { border: 1.5px dashed var(--border); border-radius: 10px; padding: 8px 12px; margin-bottom: 8px; background: var(--panel); }
.custom-details summary { cursor: pointer; font-size: 13px; font-weight: 600; color: var(--muted); user-select: none; }
.practice-card #refView { border-radius: 10px 10px 0 0; border-bottom: none; margin-bottom: 0; max-height: 30vh; overflow: auto; position: sticky; top: 64px; z-index: 5; cursor: text; }

.practice-card .progress { border-radius: 0; margin-top: 0; height: 8px; }
.pair-hint { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; font-size: 13px; font-weight: 600; color: var(--muted); padding: 6px 2px 8px; }
.pb-badge {
  display: inline-flex; align-items: center; gap: 4px;
  background: var(--panel); border: 1px solid var(--border);
  color: var(--text-2); border-radius: 999px; padding: 2px 10px; font-size: 12px; font-weight: 600;
  font-variant-numeric: tabular-nums;
}
.report-card { border-style: solid; border-color: var(--caret); background: var(--panel); }
.report-actions { margin-top: 10px; padding-top: 8px; border-top: 1px dashed var(--border); }
.practice-card #pad { border-radius: 0 0 10px 10px; border-top-width: 2px; margin-top: 0; min-height: 240px; }
.copy-row { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin-top: 10px; padding-top: 10px; border-top: 1.5px dashed var(--border); }
.copy-btns { display: inline-flex; gap: 6px; flex-wrap: wrap; margin-left: auto; }
button.btn-sm { padding: 5px 11px; font-size: 13px; border-radius: 7px; }
button.ghost { background: var(--card); color: var(--text-2); border-color: var(--border); }
button.ghost:hover { border-color: var(--caret); color: var(--text); }
label.switch-sm { font-size: 12.5px; padding: 5px 11px; }
label.switch-sm input { width: 14px; height: 14px; }
@media (max-width: 640px) {
  /* 手机上顶栏不吸顶：省出纵向空间，也避免与吸顶对照区叠在一起 */
  header.top { position: static; padding: 8px 12px; }
  main { padding: 0 8px; margin: 12px auto 50px; }
  .card { padding: 12px; }
  .practice-card { padding-bottom: 10px; }
  .practice-card #refView { top: 8px; max-height: 26vh; }
  .copy-btns { margin-left: 0; }
  /* 字号跟随用户设置；不小于16px，避免 iOS 聚焦自动缩放 */
  textarea.mono-input, #refView { font-size: max(16px, var(--pad-font, 16px)); }
  /* 对照区/输入区内边距保持一致，同步缩小 */
  .practice-card #refView, .practice-card #pad { padding: 10px 12px; }
  /* 手指目标放大 */
  .tabs button, .icon-btn { padding: 9px 16px; }
  button.btn-sm { padding: 8px 13px; }
  select.sel, input.num { padding: 9px 12px; font-size: 16px; }
  label.switch { padding: 8px 13px; }
}
/* 全端：按钮去双击缩放延迟；对照区 iOS 惯性滚动 */
button { touch-action: manipulation; }
#refView { -webkit-overflow-scrolling: touch; }
/* 点对照区进入自定义时，高亮编辑框（手机上键盘可能不自动弹出，至少看得到位置） */
@keyframes flashRing {
  0%, 100% { box-shadow: none; }
  30%, 60% { box-shadow: 0 0 0 3px var(--accent-ring); }
}
textarea.ref-edit.flash { animation: flashRing 1.2s ease; border-color: var(--caret); }
/* 快捷键小抄 */
.keys-details { border: 1.5px dashed var(--border); border-radius: 10px; padding: 8px 12px; margin-top: 10px; background: var(--panel); }
.keys-details summary { cursor: pointer; font-size: 13px; font-weight: 700; color: var(--text); user-select: none; }
.keys-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 6px 12px; margin-top: 8px; }
@media (max-width: 860px) { .keys-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 520px) { .keys-grid { grid-template-columns: 1fr; } }
.keys-grid div { font-size: 13px; color: var(--text-2); display: flex; align-items: center; gap: 4px; flex-wrap: wrap; }
.keys-grid span { color: var(--muted); }
kbd { font-family: var(--mono); font-size: 12px; background: var(--card); border: 1px solid var(--border); border-bottom-width: 2px; border-radius: 5px; padding: 1px 6px; color: var(--text); white-space: nowrap; }
.keys-note { margin-top: 8px; font-size: 13px; color: var(--muted); }

/* 专注 Zen 模式：顶栏压缩，只留练习区并放大 */
body[data-zen="true"] header.top { padding: 2px 20px; }
body[data-zen="true"] .top-inner { gap: 6px; }
body[data-zen="true"] .top-inner h1 { font-size: 16px; }
body[data-zen="true"] .tabs button, body[data-zen="true"] .icon-btn { padding: 4px 12px; font-size: 13px; }
body[data-zen="true"] header.top .sub { display: none; }
body[data-zen="true"] main > section:not(.practice-card),
body[data-zen="true"] main > .grid2 { display: none; }
body[data-zen="true"] footer { display: none; }
body[data-zen="true"] .practice-card #pad { min-height: 58vh; }
body[data-zen="true"] .practice-card #refView { max-height: none; }
body[data-zen="true"] .practice-card #pad,
body[data-zen="true"] .practice-card #refView { font-size: calc(var(--pad-font, 17px) + 2px); }