/* =========================================================
   键艺 KeyCraft — 打字练习页（单行舞台 · 纯色描边）
   加载顺序：style.css → base.css → practice.css
   ========================================================= */

.practice-page {
  --practice-w: 1100px;
  --kb-key-h: 42px;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
}

.practice-page *,
.practice-page *::before,
.practice-page *::after {
  box-sizing: border-box;
}

/* ---------------- top bar ---------------- */
.practice-topbar {
  position: sticky;
  z-index: 80;
  top: 0;
  border-bottom: 1px solid var(--line);
  background: var(--bg);
}

.practice-topbar-inner {
  display: flex;
  width: min(100% - 40px, var(--practice-w, 1100px));
  min-height: 56px;
  margin-inline: auto;
  align-items: center;
  gap: 14px;
}

.practice-back {
  display: inline-flex;
  flex-shrink: 0;
  align-items: center;
  gap: 6px;
  padding: 5px 9px;
  border: 1px solid transparent;
  border-radius: 5px;
  color: var(--muted);
  font-size: 12px;
  transition: color 0.16s var(--ease), border-color 0.16s var(--ease);
}

.practice-back:hover {
  border-color: var(--line);
  color: var(--text);
}

.practice-back .arrow {
  font-family: var(--font-mono);
  font-size: 14px;
}

.practice-title {
  display: flex;
  min-width: 0;
  flex: 1;
  align-items: center;
  gap: 10px;
}

.practice-title .badge {
  display: inline-flex;
  height: 22px;
  flex-shrink: 0;
  align-items: center;
  padding: 0 7px;
  border: 1px solid var(--line-strong);
  border-radius: 4px;
  color: var(--course, var(--accent));
  font-family: var(--font-mono);
  font-size: 8px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.practice-title-copy {
  display: flex;
  min-width: 0;
  flex-direction: column;
  gap: 1px;
}

.practice-title-copy strong {
  overflow: hidden;
  color: var(--text);
  font-size: 13.5px;
  font-weight: 600;
  letter-spacing: -0.01em;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.practice-title .practice-title-meta {
  display: flex;
  align-items: center;
  gap: 7px;
  color: var(--dim);
  font-family: var(--font-mono);
  font-size: 8px;
  letter-spacing: 0.08em;
  white-space: nowrap;
}

.practice-title-meta i {
  position: relative;
  font-style: normal;
}

.practice-title-meta i + i::before {
  content: "";
  display: inline-block;
  width: 1px;
  height: 8px;
  margin-right: 7px;
  background: var(--line-strong);
  vertical-align: -1px;
}

#practice-status {
  color: var(--green);
}

#practice-mode-label {
  color: var(--muted);
}

.practice-top-actions {
  display: flex;
  flex-shrink: 0;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
}

.practice-top-actions.has-tabs {
  justify-content: flex-end;
}

.practice-page .practice-mode-tabs {
  display: inline-flex;
  padding: 2px;
  border: 1px solid var(--line);
  border-radius: 5px;
  background: var(--panel);
}

.practice-page .practice-mode-tab {
  min-height: 24px;
  padding: 0 9px;
  border: 0;
  border-radius: 3px;
  background: transparent;
  color: var(--dim);
  font-size: 10px;
  cursor: pointer;
  transition: color 0.16s var(--ease), background-color 0.16s var(--ease);
}

.practice-page .practice-mode-tab:hover {
  color: var(--text);
}

.practice-page .practice-mode-tab.is-active {
  background: var(--text);
  color: var(--bg);
}

.practice-controls {
  display: flex;
  align-items: center;
  gap: 5px;
}

.practice-controls .icon-btn {
  width: 32px;
  height: 32px;
  border-radius: 5px;
}

/* ---------------- progress ---------------- */
.practice-progress {
  height: 2px;
  background: var(--panel-3);
}

.practice-progress > i {
  display: block;
  width: 0;
  height: 100%;
  background: var(--course, var(--accent));
  transition: width 0.15s linear;
}

/* ---------------- layout ---------------- */
.practice-page .practice-wrap--v2 {
  width: min(100% - 40px, var(--practice-w, 1100px));
  margin-inline: auto;
  padding: 18px 0 40px;
}

.practice-page .typing-sheet {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  border-top: 2px solid var(--course, var(--accent));
  border-radius: 12px;
  background: var(--panel);
  box-shadow: none;
}

.typing-sheet.is-shaking {
  animation: sheetShake 0.2s var(--ease);
}

@keyframes sheetShake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-3px); }
  50% { transform: translateX(3px); }
  75% { transform: translateX(-2px); }
}

/* ---------------- sheet head ---------------- */
.typing-sheet-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 6px 12px;
  padding: 7px 16px;
  border-bottom: 1px solid var(--line);
  background: var(--panel-2);
}

.typing-line-label {
  color: var(--course, var(--accent));
  font-family: var(--font-mono);
  font-size: 9.5px;
  font-weight: 600;
  letter-spacing: 0.14em;
}

.typing-focus {
  display: flex;
  min-width: 0;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
  gap: 4px;
  margin-left: auto;
  color: var(--dim);
  font-family: var(--font-mono);
  font-size: 8px;
  letter-spacing: 0.08em;
}

.typing-focus > span:first-child {
  margin-right: 2px;
}

.focus-key {
  display: inline-flex;
  width: auto;
  min-width: 18px;
  height: 18px;
  align-items: center;
  justify-content: center;
  padding: 0 5px;
  border: 1px solid var(--line-strong);
  border-radius: 3px;
  background: var(--panel);
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 9px;
  line-height: 1;
  white-space: nowrap;
}

.focus-key:empty {
  display: none;
}

.focus-more {
  color: var(--dim);
  font-size: 9px;
}

.typing-char-count {
  flex-shrink: 0;
  color: var(--dim);
  font-family: var(--font-mono);
  font-size: 8px;
  letter-spacing: 0.08em;
  white-space: nowrap;
}

.typing-char-count i {
  color: var(--muted);
  font-style: normal;
}

.typing-char-count span {
  margin-left: 4px;
}

/* ---------------- typing stage ---------------- */
.practice-page .practice-wrap--v2 .typing-stage {
  position: relative;
  display: flex;
  min-height: 212px;
  flex-direction: column;
  justify-content: center;
  gap: 10px;
  padding: 18px 24px 16px;
  cursor: text;
}

.typing-prev {
  min-height: 1.4em;
  overflow: hidden;
  color: var(--dim);
  font-family: var(--font-mono);
  font-size: 16px;
  letter-spacing: 0.015em;
  line-height: 1.4;
  opacity: 0.34;
  text-align: center;
  text-overflow: ellipsis;
  white-space: nowrap;
  transition: opacity 0.16s var(--ease);
}

.typing-prev.is-empty {
  opacity: 0;
}

.practice-page .typing-text {
  position: relative;
  max-height: none;
  overflow: visible;
  padding-right: 0;
  font-family: var(--font-mono);
  font-size: 32px;
  font-weight: 500;
  letter-spacing: 0.015em;
  line-height: 1.5;
  text-align: center;
  white-space: pre-wrap;
  overflow-wrap: break-word;
  word-break: normal;
}

.practice-page .typing-text.is-cn {
  font-family: var(--font-sans);
  font-size: 35px;
  letter-spacing: 0.05em;
}

.practice-page .typing-text.is-wubi {
  font-family: var(--font-mono);
  letter-spacing: 0.08em;
  white-space: pre-wrap;
}

.practice-page .typing-text .ch {
  position: relative;
  display: inline;
  padding: 0 0.01em;
  border-radius: 4px;
  color: var(--muted);
  transition: color 0.12s var(--ease), background-color 0.12s var(--ease);
}

.practice-page .typing-text .ch.is-space {
  display: inline-block;
  width: 0.55em;
  min-width: 0.55em;
}

.practice-page .typing-text .ch.is-done {
  background: var(--correct-soft);
  color: var(--correct);
}

.practice-page .typing-text .ch.is-current {
  background: var(--accent);
  color: var(--accent-ink);
  box-shadow: 0 0 0 1px var(--accent);
}

.practice-page .typing-text .ch.is-wrong {
  background: var(--panel-3);
  box-shadow: inset 0 -2px 0 var(--wrong);
  color: var(--wrong);
}

.typing-text.is-entering {
  animation: lineEnter 0.16s var(--ease) both;
}

@keyframes lineEnter {
  from {
    opacity: 0;
    transform: translateY(7px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ---------------- hint bar ---------------- */
.typing-line-hint {
  display: flex;
  min-height: 36px;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 4px 14px;
  border-top: 1px solid var(--line);
  background: var(--panel-2);
}

.hint-inline {
  display: flex;
  min-width: 0;
  align-items: center;
  gap: 8px;
  overflow: hidden;
  color: var(--muted);
  font-family: var(--font-sans);
  font-size: 11.5px;
  white-space: nowrap;
}

.hint-inline kbd {
  display: inline-flex;
  min-width: 22px;
  height: 22px;
  align-items: center;
  justify-content: center;
  padding: 0 6px;
  border: 1px solid var(--line-strong);
  border-bottom-width: 2px;
  border-radius: 4px;
  background: var(--panel);
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1;
}

.hint-inline b {
  color: var(--text);
  font-size: 13px;
  font-weight: 600;
}

.hint-inline span {
  color: var(--dim);
  font-family: var(--font-mono);
  font-size: 9.5px;
}

.hint-inline em {
  padding: 1px 4px;
  border: 1px solid var(--line);
  border-radius: 3px;
  color: var(--dim);
  font-family: var(--font-mono);
  font-size: 8px;
  font-style: normal;
}

.hint-inline.is-error {
  color: var(--wrong);
}

.hint-inline.is-error kbd {
  border-color: var(--wrong);
  color: var(--wrong);
}

.hint-inline.is-error em {
  border-color: var(--wrong);
  color: var(--wrong);
}

.hint-inline .hint-toggle {
  padding: 2px 6px;
  border: 1px solid var(--line);
  border-radius: 3px;
  background: var(--panel);
  color: var(--dim);
  font-family: var(--font-mono);
  font-size: 8px;
  cursor: pointer;
}

.hint-inline .hint-toggle:hover {
  border-color: var(--line-strong);
  color: var(--text);
}

.hint-inline .hint-finished {
  color: var(--green);
  font-weight: 600;
}

.typing-sheet.hide-hint .hint-inline {
  display: none;
}

/* ---------------- start button ---------------- */
.practice-page .typing-start {
  position: static;
  z-index: auto;
  inset: auto;
  display: inline-flex;
  flex-shrink: 0;
  flex-direction: row;
  width: auto;
  max-width: none;
  align-items: center;
  gap: 5px;
  margin-left: auto;
  padding: 3px 10px 3px 4px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: var(--panel);
  color: var(--text);
  box-shadow: none;
  text-align: left;
  transform: none;
  cursor: pointer;
}

.practice-page .typing-start:hover {
  border-color: var(--accent);
}

.practice-page .typing-start[hidden] {
  display: none;
}

.practice-page .typing-start .start-icon {
  display: inline-flex;
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  align-items: center;
  justify-content: center;
  border: 0;
  border-radius: 50%;
  background: var(--accent);
  color: var(--accent-ink);
}

.practice-page .typing-start .start-icon svg {
  width: 10px;
  height: 10px;
}

.practice-page .typing-start strong {
  color: var(--accent);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.02em;
}

/* ---------------- IME / hidden inputs ---------------- */
.practice-page .typing-hidden-input {
  position: absolute;
  z-index: -1;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.practice-page .typing-ime-input {
  position: absolute;
  z-index: 2;
  inset: 0;
  width: 100%;
  height: 100%;
  resize: none;
  border: 0;
  background: transparent;
  color: transparent;
  caret-color: transparent;
  opacity: 0.01;
}

/* ---------------- pause ---------------- */
.practice-pause {
  position: absolute;
  z-index: 8;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 7px;
  background: var(--panel);
  text-align: center;
}

.practice-pause strong {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.03em;
}

.practice-pause p {
  color: var(--dim);
  font-size: 11px;
}

.practice-pause .practice-pause-keys {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 5px;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 10px;
}

.practice-pause .practice-pause-keys kbd {
  display: inline-flex;
  height: 20px;
  align-items: center;
  padding: 0 6px;
  border: 1px solid var(--line-strong);
  border-bottom-width: 2px;
  border-radius: 4px;
  background: var(--panel-2);
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 10px;
  line-height: 1;
}

.practice-pause > div {
  display: flex;
  gap: 8px;
  margin-top: 6px;
}

.practice-countdown {
  position: absolute;
  z-index: 9;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--panel);
}

.practice-countdown strong {
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 58px;
  font-weight: 700;
}

/* ---------------- stats rail ---------------- */
.practice-page .stats-rail {
  display: grid;
  grid-template-columns: 1.35fr repeat(4, minmax(0, 1fr));
  gap: 1px;
  margin-top: 10px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--line);
}

.rail-stat {
  position: relative;
  display: flex;
  min-width: 0;
  flex-direction: column;
  justify-content: center;
  padding: 7px 12px 8px;
  background: var(--panel);
}

.rail-stat > span {
  color: var(--dim);
  font-family: var(--font-mono);
  font-size: 7.5px;
  letter-spacing: 0.1em;
}

.rail-stat strong {
  display: inline-block;
  margin-top: 1px;
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 19px;
  font-weight: 700;
  letter-spacing: -0.05em;
  line-height: 1.05;
  transform-origin: left center;
  font-variant-numeric: tabular-nums;
}

.rail-stat small {
  margin-left: 3px;
  color: var(--dim);
  font-family: var(--font-sans);
  font-size: 8px;
}

.rail-stat--speed {
  box-shadow: inset 2px 0 0 var(--accent);
}

.rail-stat--speed strong {
  color: var(--accent);
}

.rail-sparkline {
  width: 100%;
  height: 14px;
  margin-top: 1px;
  color: var(--accent);
  overflow: visible;
}

.rail-bar {
  height: 3px;
  margin-top: 5px;
  overflow: hidden;
  border-radius: 99px;
  background: var(--line);
}

.rail-bar i {
  display: block;
  width: 100%;
  height: 100%;
  border-radius: inherit;
  background: var(--green);
  transition: width 0.2s linear;
}

.rail-stat strong.is-pop {
  animation: comboPop 0.16s var(--ease);
}

@keyframes comboPop {
  0% { transform: scale(1); }
  50% { transform: scale(1.22); color: var(--accent); }
  100% { transform: scale(1); }
}

/* ---------------- keyboard ---------------- */
.practice-page .practice-wrap--v2 .practice-keyboard {
  width: 100%;
  margin: 10px 0 0;
  padding: 7px 10px 9px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--panel);
}

.practice-page .practice-keyboard-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 6px;
  color: var(--dim);
  font-family: var(--font-mono);
  font-size: 8px;
  letter-spacing: 0.12em;
}

.practice-kb-toggle {
  padding: 3px 9px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--panel-2);
  color: var(--dim);
  font-family: var(--font-mono);
  font-size: 8px;
  letter-spacing: 0.08em;
  cursor: pointer;
  transition: color 0.16s var(--ease), border-color 0.16s var(--ease);
}

.practice-kb-toggle:hover {
  border-color: var(--line-strong);
  color: var(--text);
}

.practice-keyboard.is-collapsed .kb-wrap {
  display: none;
}

.practice-keyboard .kb-wrap {
  overflow-x: auto;
  overflow-y: hidden;
  padding-bottom: 2px;
}

/* 练习页键盘铺满容器，桌面端不出现横向滚动 */
.practice-page .practice-keyboard .kb {
  width: 100%;
  min-width: 0;
  margin: 0;
  --kb-font: 12.5px;
  --kb-gap: 4px;
  --kb-pad: 7px;
}

.practice-page .practice-keyboard .kb-key {
  height: var(--kb-key-h, 42px);
}

/* keyboardSize：s 更窄、键更矮；l 更宽、键更高 */
html[data-keyboard-size="s"] .practice-page {
  --practice-w: 980px;
  --kb-key-h: 38px;
}

html[data-keyboard-size="l"] .practice-page {
  --practice-w: 1180px;
  --kb-key-h: 46px;
}

html[data-keyboard-size="s"] .practice-page .practice-keyboard .kb {
  --kb-font: 12px;
  --kb-gap: 4px;
}

html[data-keyboard-size="l"] .practice-page .practice-keyboard .kb {
  --kb-font: 13.5px;
  --kb-gap: 5px;
  --kb-pad: 8px;
}

/* ---------------- typing sizes ---------------- */
.practice-page .typing-size-s .typing-text {
  font-size: 28px;
}

.practice-page .typing-size-l .typing-text {
  font-size: 41px;
}

.practice-page .typing-size-s .typing-text.is-cn {
  font-size: 31px;
}

.practice-page .typing-size-l .typing-text.is-cn {
  font-size: 44px;
}

.practice-page .typing-size-s .typing-prev {
  font-size: 14px;
}

.practice-page .typing-size-l .typing-prev {
  font-size: 20px;
}

/* ---------------- reduce motion ---------------- */
.practice-page.reduce-motion .typing-text.is-entering,
.practice-page.reduce-motion .typing-sheet.is-shaking,
.practice-page.reduce-motion .rail-stat strong.is-pop {
  animation: none;
}

.practice-page.reduce-motion .typing-text .ch,
.practice-page.reduce-motion .typing-prev {
  transition: none;
}

/* ---------------- result overlay safety ---------------- */
.result-overlay {
  z-index: 240;
}

/* ---------------- responsive ---------------- */
@media (max-width: 760px) {
  .practice-topbar-inner {
    width: calc(100% - 24px);
    min-height: 54px;
    gap: 8px;
  }

  .practice-back {
    padding: 5px 6px;
  }

  .practice-back .back-label {
    display: none;
  }

  .practice-title-copy strong {
    font-size: 12px;
  }

  .practice-title .practice-title-meta {
    gap: 5px;
    font-size: 7px;
    letter-spacing: 0.05em;
  }

  .practice-title-meta i:nth-child(3) {
    display: none;
  }

  .practice-top-actions {
    gap: 5px;
  }

  .practice-controls .icon-btn {
    width: 29px;
    height: 29px;
  }

  .practice-page .practice-mode-tab {
    min-height: 22px;
    padding: 0 7px;
    font-size: 9px;
  }

  .practice-page .practice-wrap--v2 {
    width: calc(100% - 20px);
    padding: 14px 0 32px;
  }

  .typing-sheet {
    border-radius: 12px;
  }

  .typing-sheet-head {
    gap: 5px 8px;
    padding: 6px 12px;
  }

  .typing-line-label {
    font-size: 9px;
  }

  .typing-focus {
    order: 3;
    width: 100%;
    margin-left: 0;
  }

  .focus-key {
    width: auto;
    min-width: 16px;
    height: 16px;
    padding: 0 4px;
    font-size: 8px;
  }

  .typing-char-count {
    font-size: 7px;
  }

  .practice-page .practice-wrap--v2 .typing-stage {
    min-height: 158px;
    gap: 8px;
    padding: 16px 12px 14px;
  }

  .typing-prev {
    font-size: 12px;
  }

  .practice-page .typing-text {
    font-size: 25px;
    line-height: 1.5;
  }

  .practice-page .typing-text.is-cn {
    font-size: 28px;
  }

  .practice-page .typing-size-s .typing-text {
    font-size: 21px;
  }

  .practice-page .typing-size-l .typing-text {
    font-size: 29px;
  }

  .practice-page .typing-size-s .typing-text.is-cn {
    font-size: 24px;
  }

  .practice-page .typing-size-l .typing-text.is-cn {
    font-size: 32px;
  }

  .typing-line-hint {
    min-height: 32px;
    gap: 8px;
    padding: 3px 10px;
  }

  .hint-inline {
    gap: 6px;
    font-size: 11px;
  }

  .hint-inline kbd {
    min-width: 20px;
    height: 20px;
    padding: 0 5px;
    font-size: 10px;
  }

  .hint-inline b {
    font-size: 12px;
  }

  .practice-page .typing-start {
    padding: 2px 8px 2px 3px;
  }

  .practice-page .typing-start .start-icon {
    width: 18px;
    height: 18px;
  }

  .practice-page .stats-rail {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    margin-top: 8px;
  }

  .rail-stat--speed {
    grid-column: 1 / -1;
  }

  .rail-stat {
    padding: 6px 10px 7px;
  }

  .rail-stat strong {
    font-size: 17px;
  }

  .practice-page .practice-wrap--v2 .practice-keyboard {
    margin-top: 8px;
    padding: 6px 8px 8px;
  }

  .practice-page {
    --kb-key-h: 32px;
  }

  html[data-keyboard-size="s"] .practice-page {
    --kb-key-h: 30px;
  }

  html[data-keyboard-size="l"] .practice-page {
    --kb-key-h: 34px;
  }

  .practice-page .practice-keyboard .kb {
    width: 100%;
    min-width: 680px;
    --kb-font: 11.5px;
    --kb-gap: 3px;
    --kb-pad: 6px;
  }

  html[data-keyboard-size="s"] .practice-page .practice-keyboard .kb {
    min-width: 660px;
    --kb-font: 11px;
  }

  html[data-keyboard-size="l"] .practice-page .practice-keyboard .kb {
    min-width: 700px;
    --kb-font: 12px;
  }

  .practice-pause strong {
    font-size: 20px;
  }

  .practice-pause .practice-pause-keys {
    font-size: 9.5px;
  }

  .practice-countdown strong {
    font-size: 48px;
  }
}

@media (max-width: 400px) {
  .practice-page .typing-text {
    font-size: 22px;
  }

  .practice-page .typing-size-s .typing-text {
    font-size: 19px;
  }

  .practice-page .typing-size-l .typing-text {
    font-size: 27px;
  }

  .practice-page .practice-wrap--v2 .typing-stage {
    min-height: 148px;
    padding: 14px 10px 12px;
  }

  .rail-stat strong {
    font-size: 16px;
  }
}