:root {
  color-scheme: light;
  --ink: #253044;
  --muted: #68758b;
  --line: #dbe5ed;
  --accent: #1c92a9;
  --accent-dark: #126b7d;
  --glow: #40e6ff;
  --back: #eef7f8;
  font-family: "Yu Gothic UI", "Hiragino Kaku Gothic ProN", Meiryo, sans-serif;
}
* {
  box-sizing: border-box;
}
body {
  min-width: 320px;
  min-height: 100vh;
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 15% 10%, #dff4f6 0, transparent 34rem),
    linear-gradient(145deg, #f8fbfc, var(--back));
}
button,
input {
  font: inherit;
}
.app {
  width: min(1100px, calc(100% - 32px));
  margin: auto;
  padding: 26px 0 20px;
}
.app__header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 14px;
}
.app__eyebrow {
  margin: 0 0 4px;
  color: var(--accent-dark);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.12em;
}
h1 {
  margin: 0;
  color: #126b7d;
  font-size: clamp(1.35rem, 3vw, 2rem);
}
.title-line {
  display: flex;
  align-items: center;
  gap: 12px;
}
.is-challenge h1 { color: #c35d0b; }
.status {
  display: flex;
  gap: 8px;
  margin: 0;
}
.status__item {
  min-width: 92px;
  padding: 9px 14px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #ffffffe0;
  text-align: center;
  box-shadow: 0 5px 18px #29535e0f;
}
.status dt {
  color: var(--muted);
  font-size: 0.75rem;
  font-weight: 700;
}
.status dd {
  margin: 2px 0 0;
  color: var(--accent-dark);
  font-size: 1.55rem;
  font-weight: 800;
  line-height: 1;
}
.status small {
  font-size: 0.72rem;
}
.play-area {
  position: relative;
  height: clamp(420px, 48vh, 480px);
  overflow: hidden;
  border: 3px solid #b9dbe0;
  border-radius: 22px;
  background:
    linear-gradient(#ffffffb8, #ffffffe8),
    repeating-linear-gradient(90deg, transparent 0 79px, #d9eef0 80px);
  box-shadow: 0 18px 45px #254c581f;
}
.falling-key,
.effect-key,
.challenge-key {
  position: absolute;
  z-index: 4;
  top: 0;
  left: 0;
  width: 1.25em;
  color: var(--accent-dark);
  font:
    900 clamp(4rem, 10vw, 6.5rem) / 1 Arial,
    sans-serif;
  text-align: center;
  text-shadow: 0 5px 0 #d4edf0;
  will-change: transform, opacity;
}
.challenge-keys {
  position: absolute;
  z-index: 4;
  inset: 0;
  pointer-events: none;
}
.challenge-key {
  will-change: transform, opacity;
}
.challenge-key.is-hit {
  animation: challenge-key-hit 0.2s ease-out forwards;
}
.combo-display {
  position: absolute;
  z-index: 7;
  top: 16px;
  right: 18px;
  min-width: 150px;
  padding: 9px 14px;
  border: 2px solid #ffbf47;
  border-radius: 14px;
  color: #813b00;
  background: #fff8dced;
  text-align: center;
  box-shadow: 0 7px 24px #dc750035;
  pointer-events: none;
}
.combo-display strong,
.combo-display small { display: block; }
.combo-display strong { font: 900 1.45rem/1 Arial, sans-serif; }
.combo-display small { margin-top: 4px; font-weight: 800; }
.combo-display.is-milestone { animation: combo-milestone .48s ease-out; }
.combo-flash {
  position: absolute;
  z-index: 6;
  inset: 0;
  background: #ef334433;
  opacity: 0;
  pointer-events: none;
}
.combo-flash.is-active { animation: combo-break .25s ease-out; }
.effect-key.is-hit {
  animation: effect-key-hit 0.18s ease-out forwards;
}
.effect-layer {
  position: absolute;
  z-index: 3;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}
.panel {
  position: absolute;
  z-index: 8;
  top: 50%;
  left: 50%;
  width: min(760px, calc(100% - 32px));
  padding: clamp(18px, 3vw, 28px);
  border: 1px solid var(--line);
  border-radius: 20px;
  background: #fffffff5;
  text-align: center;
  box-shadow: 0 20px 50px #254c5826;
  transform: translate(-50%, -50%);
}
.start-panel {
  padding-block: 16px;
}
.start-panel .mode-selector {
  gap: 6px 8px;
  margin-top: 8px;
}
.start-panel .mode-option span {
  min-height: 54px;
  padding-block: 6px;
}
.start-panel .mode-divider {
  margin-block: 2px 0;
}
.start-panel .challenge-controls {
  margin-top: 8px;
}
.start-panel .panel__main {
  margin: 0;
}
.start-panel .sound-setting {
  margin: 0;
}
.panel__label,
.panel__sub {
  margin: 0;
  color: var(--muted);
}
.panel__main {
  margin: 14px 0 9px;
  font-size: clamp(1.1rem, 3vw, 1.45rem);
  font-weight: 800;
}
kbd {
  display: inline-block;
  padding: 0.28em 0.65em;
  border: 1px solid #9eb8bf;
  border-bottom-width: 4px;
  border-radius: 8px;
  color: var(--accent-dark);
  background: #f8ffff;
  font: inherit;
}
.mode-selector {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  margin: 14px 0 0;
  padding: 0;
  border: 0;
}
.mode-option {
  cursor: pointer;
}
.mode-option--numpad {
  grid-column: 3/5;
}
.mode-option--japanese {
  grid-column: 1/3;
}
.mode-option input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}
.mode-option span {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 62px;
  padding: 8px 5px;
  border: 2px solid #c7dade;
  border-radius: 12px;
  color: #40576a;
  background: #f7fbfc;
  font-weight: 800;
  transition: 0.15s;
}
.mode-option small {
  display: block;
  margin-top: 4px;
  color: var(--muted);
  font:
    600 0.62rem Arial,
    sans-serif;
}
.mode-option input:checked + span {
  color: #07404c;
  border-color: #29c5db;
  background: #d8fbff;
  box-shadow:
    0 0 0 3px #40e6ff2e,
    0 7px 18px #1c92a91f;
}
.mode-option input:checked + span::before {
  content: "✓";
  position: absolute;
  top: 3px;
  left: 7px;
  color: #08798d;
  font-size: 1rem;
  line-height: 1;
}
.mode-divider {
  grid-column: 1/-1;
  height: 1px;
  margin: 5px 0 1px;
  background: linear-gradient(90deg, transparent, #aacbd1 12%, #aacbd1 88%, transparent);
}
.challenge-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  margin-top: 12px;
}
.challenge-toggle {
  padding: 8px 15px;
  border: 2px solid #b7c8ce;
  border-radius: 999px;
  color: #526477;
  background: #f7fbfc;
  font-weight: 800;
  cursor: pointer;
}
.challenge-toggle.is-on {
  color: #6a2500;
  border-color: #ff9c3d;
  background: #fff0d9;
  box-shadow: 0 0 0 3px #ffae4933;
}
.level-control {
  display: flex;
  align-items: center;
  gap: 8px;
  color: #813b00;
  font-weight: 800;
}
.level-control input { width: min(180px, 24vw); accent-color: #f08022; }
.selection-warning {
  margin: 9px 0 -5px;
  color: #b32635;
  font-weight: 800;
}
.start-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(14px, 3vw, 30px);
  margin: 10px 0 7px;
}
.placement-line {
  position: fixed;
  z-index: 18;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  pointer-events: none;
}
.placement-line.is-visible { opacity: 1; }
.placement-line line {
  stroke: #55becb;
  stroke-width: 3;
  stroke-linecap: round;
  stroke-dasharray: 5 7;
  filter: drop-shadow(0 0 4px #71eafa);
}
.is-challenge .mode-option input:checked + span {
  color: #672d00;
  border-color: #ff9c3d;
  background: #fff0d9;
  box-shadow: 0 0 0 3px #ffae4933, 0 7px 18px #d66e161f;
}
.is-challenge .mode-option input:checked + span::before { color: #c35d0b; }
.sound-setting {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin: 0 0 9px;
  color: var(--muted);
  font-weight: 700;
}
.sound-setting small {
  font-weight: 500;
}
.sound-toggle {
  min-width: 54px;
  padding: 4px 10px;
  border: 1px solid #75bdc9;
  border-radius: 99px;
  color: #07404c;
  background: #d8fbff;
  font-weight: 800;
  cursor: pointer;
}
.sound-toggle[aria-pressed="false"] {
  color: #68758b;
  border-color: #becbd0;
  background: #edf1f2;
}
.countdown {
  position: absolute;
  z-index: 9;
  inset: 0;
  display: grid;
  place-items: center;
  color: var(--accent-dark);
  background: #ffffffd6;
  font:
    900 clamp(6rem, 22vw, 13rem) / 1 Arial,
    sans-serif;
  text-shadow: 0 8px 0 #d4edf0;
}
.exit-panel h2,
.result h2 {
  margin: 8px 0 20px;
}
.exit-panel__buttons {
  display: flex;
  justify-content: center;
  gap: 10px;
}
.result__scores {
  display: flex;
  flex-wrap: nowrap;
  justify-content: center;
  gap: 10px;
}
.dialog-button,
.change-mode {
  padding: 10px 18px;
  border: 1px solid #9eb8bf;
  border-radius: 99px;
  color: var(--accent-dark);
  background: #f6fcfd;
  font-weight: 800;
  cursor: pointer;
}
.dialog-button--danger {
  color: #9b2833;
  border-color: #dfaab0;
  background: #fff1f2;
}
.result__scores {
  margin-bottom: 18px;
}
.result__scores p {
  flex: 0 1 150px;
  min-width: 0;
  margin: 0;
  padding: 14px;
  border-radius: 12px;
  color: var(--muted);
  background: #edf8f9;
  font-size: 0.82rem;
  font-weight: 700;
}
.result__scores strong {
  display: block;
  margin-top: 4px;
  color: var(--accent-dark);
  font-size: 2.2rem;
}
.result__scores small {
  display: block;
  margin-top: 2px;
  color: var(--muted);
  font-size: .7rem;
  font-weight: 700;
}
#final-speed {
  white-space: nowrap;
  font-size: 1.45rem;
}
.result-retry {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 12px;
}
.result-retry .panel__sub {
  margin: 0;
}
.result-retry .change-mode {
  flex: 0 0 auto;
  padding: 7px 14px;
}
.guide {
  margin-top: 12px;
  padding: 12px 14px 9px;
  border: 1px solid #cfe2e6;
  border-radius: 18px;
  background: #ffffffe0;
  box-shadow: 0 10px 30px #254c5814;
}
.guide__header {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 24px;
  margin-bottom: 9px;
}
.guide__title {
  margin: 0;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 700;
}
.exit-hint {
  position: absolute;
  right: 0;
  margin: 0;
  color: var(--muted);
  font-size: 0.78rem;
}
.exit-hint kbd {
  padding: 0.12em 0.45em;
  border-bottom-width: 2px;
}
.keyboard-viewport {
  overflow-x: auto;
  padding: 4px 3px 7px;
}
.screen-keyboard {
  --key-width: clamp(43px, 6.3vw, 68px);
  width: calc(var(--key-width) * 10 + 63px);
  min-width: 493px;
  margin: auto;
}
.keyboard-row {
  display: grid;
  grid-template-columns: repeat(10, var(--key-width));
  gap: 7px;
  width: max-content;
  margin-bottom: 6px;
  transition: 0.18s;
}
.keyboard-row[data-row="top"] {
  margin-left: 15px;
}
.keyboard-row[data-row="home"] {
  margin-left: 29px;
}
.keyboard-row[data-row="bottom"] {
  margin-left: 43px;
}
.keyboard-row.is-inactive-row {
  opacity: 0.48;
  filter: saturate(0.65);
}
.keycap,
.numpad-key {
  position: relative;
  min-width: 0;
  min-height: 48px;
  padding: 0;
  border: 1px solid #a9c0c6;
  border-bottom: 5px solid #819ba2;
  border-radius: 9px;
  color: #33475b;
  background: linear-gradient(#fff, #eaf1f3);
  font:
    800 clamp(0.95rem, 2vw, 1.28rem) / 1 Arial,
    sans-serif;
  box-shadow: 0 3px 6px #254c581f;
  transition: 0.08s;
}
.keycap:before,
.numpad-key:before {
  content: "";
  position: absolute;
  inset: 3px;
  z-index: -1;
  border-radius: 7px;
  opacity: 0.28;
}
.keycap[data-zone*="little"]:before,
.numpad-key[data-finger="little"]:before {
  background: #f6acc1;
}
.keycap[data-zone*="ring"]:before,
.numpad-key[data-finger="ring"]:before {
  background: #efc57f;
}
.keycap[data-zone*="middle"]:before,
.numpad-key[data-finger="middle"]:before {
  background: #d9dc75;
}
.keycap[data-zone*="index"]:before,
.numpad-key[data-finger="index"]:before {
  background: #8edcc4;
}
.numpad-key[data-finger="thumb"]:before {
  background: #b6c8ef;
}
.keycap[data-bump="true"]:after,
.numpad-key[data-bump="true"]:after {
  content: "";
  position: absolute;
  left: 33%;
  right: 33%;
  bottom: 7px;
  height: 3px;
  border-radius: 2px;
  background: #718c94;
}
.is-zone-target {
  opacity: 1 !important;
  border-color: #68cbd8 !important;
  background: #e5fbfd !important;
  box-shadow: 0 0 10px #40e6ff4d !important;
}
.is-target {
  z-index: 2;
  color: #073e4b !important;
  background: #bdf8ff !important;
  box-shadow:
    0 0 0 2px #5edbec,
    0 0 18px #40e6ffd9 !important;
  transform: translateY(-1px);
}
.is-correct {
  color: #fff !important;
  background: #23cde6 !important;
  transform: translateY(2px) scale(0.98);
  box-shadow:
    0 0 0 3px #fff,
    0 0 30px var(--glow) !important;
}
.is-wrong {
  z-index: 3;
  color: #fff !important;
  background: #ef5360 !important;
  border-color: #b32635 !important;
  box-shadow: 0 0 18px #ef3243d9 !important;
  animation: wrong-shake 0.24s linear;
}
.hands {
  display: flex;
  justify-content: center;
  gap: clamp(34px, 11vw, 130px);
  margin: 7px auto 0;
}
.hand {
  display: flex;
  align-items: flex-end;
  gap: 4px;
  padding: 5px 13px 0;
  border-bottom: 7px solid #b8c9ce;
  border-radius: 0 0 24px 24px;
}
.finger,
.numpad-finger {
  display: grid;
  place-items: start center;
  width: clamp(22px, 4vw, 34px);
  height: var(--finger-height);
  padding-top: 6px;
  border: 2px solid #a9bcc2;
  border-radius: 15px 15px 8px 8px;
  color: #60727a;
  background: linear-gradient(#edf5f6, #dce9eb);
  font-size: clamp(0.56rem, 1.4vw, 0.68rem);
  font-weight: 800;
  transition: 0.1s;
}
.finger.is-target,
.numpad-finger.is-target {
  transform: translateY(-4px);
}
.numpad-question {
  position: absolute;
  z-index: 5;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding-bottom: 30px;
}
.current-question {
  position: relative;
  z-index: 4;
  display: flex;
  align-items: center;
  min-height: 1.2em;
  color: #33475b;
  font:
    900 clamp(3.1rem, 9vw, 6rem) / 1 Arial,
    sans-serif;
  letter-spacing: 0.04em;
  text-shadow: 0 4px 0 #e3eff1;
}
.current-question span {
  transition: 0.08s;
}
.current-question span.is-entered {
  color: #1cb9cf;
  text-shadow: 0 0 14px #40e6ff99;
}
.current-question span.is-current {
  text-decoration: underline;
  text-decoration-color: #ef9f24;
  text-underline-offset: 8px;
}
.current-question .comma {
  margin-right: 0.05em;
  color: #738595;
  font-style: normal;
}
.question-enter {
  margin-left: 0.35em;
  font-size: 0.27em;
  letter-spacing: 0;
  text-shadow: none;
}
.question-enter.is-ready {
  color: #073e4b;
  border-color: #29c5db;
  background: #bdf8ff;
  box-shadow: 0 0 18px #40e6ffd9;
}
.next-question {
  position: relative;
  z-index: 4;
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 24px;
  padding: 10px 20px;
  border: 1px solid #b9dbe0;
  border-radius: 13px;
  background: #edf8f9d9;
  color: var(--muted);
}
.next-question span {
  font-size: 0.8rem;
  font-weight: 800;
}
.next-question strong {
  color: #40576a;
  font:
    800 clamp(1.3rem, 4vw, 2rem) / 1 Arial,
    sans-serif;
  letter-spacing: 0.05em;
}
.comma-note {
  z-index: 4;
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 0.76rem;
}
.current-question.is-promoting {
  animation: promote 0.3s ease-out;
}
.question-shatter {
  position: absolute;
  z-index: 6;
  top: 39%;
  animation: shatter 0.28s ease-out forwards;
  pointer-events: none;
}
.numpad-guide {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(34px, 8vw, 100px);
  padding: 4px 0 10px;
}
.screen-numpad {
  display: grid;
  grid-template-columns: repeat(3, 62px);
  grid-template-rows: repeat(4, 52px);
  gap: 7px;
}
.numpad-key {
  font-size: 1.1rem;
}
.numpad-key[data-numpad-key="0"] {
  grid-column: 1/3;
}
.numpad-key[data-numpad-key="."] {
  grid-column: 3;
  opacity: 0.32;
  filter: grayscale(1);
}
.numpad-key[data-numpad-key="Enter"] {
  grid-column: 1/4;
}

/* Ver.0.9：成績・ランキング・分析・CSV管理 */
.brand-line { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.brand-line .app__eyebrow { margin: 0; }
.app-version { margin: 0; padding-left: 10px; border-left: 1px solid #9fc5cc; color: #496a73; font-size: .72rem; font-weight: 800; letter-spacing: .04em; }
.record-links { display: flex; flex-wrap: wrap; gap: 7px; margin: 0; }
.record-links button, .result-actions button { padding: 5px 11px; border: 1px solid #9ecbd2; border-radius: 99px; color: #176273; background: #effcfe; font-size: .72rem; font-weight: 800; cursor: pointer; }
.is-challenge .record-links button, .is-challenge .result-actions button { border-color: #e8b783; color: #9b4d0a; background: #fff6ed; }
.result { width: min(940px, calc(100% - 28px)); max-height: calc(100% - 20px); overflow: auto; }
.result-details { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 8px; width: min(850px, 100%); margin: 0 auto 12px; }
.result-card { padding: 10px; border: 1px solid #cce3e7; border-radius: 12px; background: #f8feff; text-align: left; }
.result-card h3 { margin: 0 0 6px; color: #155b69; font-size: .9rem; }
.result-card p { margin: 2px 0; color: #536c74; font-size: .78rem; }
.ranking-result { margin: 8px 0; color: #b55208; font-weight: 900; }
.result-actions { display: flex; justify-content: center; gap: 8px; margin: 8px 0; }

.records-screen { position: fixed; z-index: 100; inset: 0; padding: 20px; overflow: auto; background: #16333bd9; }
.records-window { width: min(980px, 100%); min-height: min(680px, calc(100vh - 40px)); margin: 0 auto; padding: 22px; border-radius: 22px; background: #f8fcfd; box-shadow: 0 20px 80px #0007; }
.records-window > header { display: flex; justify-content: space-between; align-items: flex-start; border-bottom: 1px solid #cce0e4; }
.records-window h2 { margin: 4px 0 14px; color: #164c58; }
.close-records { width: 40px; height: 40px; border: 0; border-radius: 50%; color: #49656b; background: #e6f1f3; font-size: 1.5rem; cursor: pointer; }
.records-tabs { display: flex; gap: 8px; margin: 18px 0; }
.records-tabs button { padding: 9px 18px; border: 1px solid #b6d0d5; border-radius: 99px; color: #49656b; background: #fff; font-weight: 800; cursor: pointer; }
.records-tabs button.is-active { color: #fff; border-color: #19869a; background: #19869a; }
.summary-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(145px, 1fr)); gap: 10px; }
.summary-card { padding: 14px; border: 1px solid #cce0e4; border-radius: 14px; background: #fff; }
.summary-card h3 { margin: 0 0 8px; color: #1b6674; font-size: .9rem; }
.summary-card strong { display: block; color: #163e47; font-size: 1.35rem; }
.summary-card small { color: #6b7e83; }
.history-title { margin: 24px 0 10px; color: #345b64; }
.history-list { display: grid; gap: 8px; }
.history-item, .ranking-item { padding: 12px 14px; border: 1px solid #d4e4e7; border-radius: 12px; background: #fff; }
.history-item h4, .ranking-item h3 { margin: 0 0 5px; color: #215d69; }
.history-item p, .ranking-item p { margin: 2px 0; color: #586f75; font-size: .82rem; }
.ranking-filters { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 14px; }
.ranking-filters label { color: #45636a; font-size: .82rem; font-weight: 800; }
.ranking-filters select { margin-left: 6px; padding: 7px 10px; border: 1px solid #b5ced3; border-radius: 8px; background: #fff; }
#ranking-list { display: grid; gap: 8px; }
.ranking-item { border-left: 5px solid #ef912e; }
.empty-records { padding: 50px 20px; color: #71858a; text-align: center; }
.records-window footer { margin-top: 24px; padding-top: 16px; border-top: 1px solid #d4e4e7; text-align: right; }
.delete-records { padding: 8px 14px; border: 1px solid #dba4aa; border-radius: 9px; color: #9b2833; background: #fff1f2; font-weight: 800; cursor: pointer; }

.chart-toolbar { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 12px; padding: 10px 12px; border: 1px solid #c6dde1; border-radius: 12px; background: #fff; color: #45636a; font-size: .84rem; font-weight: 800; }
.chart-toolbar select { margin-left: 7px; padding: 7px 10px; border: 1px solid #acc9cf; border-radius: 8px; background: #fff; }
.analysis-comment { margin-bottom: 14px; padding: 14px 18px; border: 1px solid #bce0d6; border-left: 5px solid #27a47f; border-radius: 13px; background: #f2fcf8; color: #345c53; }
.analysis-comment h3 { margin: 0 0 7px; font-size: .95rem; }
.analysis-comment ul { margin: 0; padding-left: 1.3em; }
.analysis-comment li { margin: 4px 0; font-size: .84rem; }
.chart-card { margin: 12px 0; padding: 14px; border: 1px solid #d1e2e5; border-radius: 15px; background: #fff; }
.chart-card h3 { margin: 0 0 3px; color: #215d69; }
.chart-card > p { margin: 0 0 8px; color: #71858a; font-size: .78rem; }
.chart-frame { min-height: 220px; }
.data-chart { display: block; width: 100%; height: auto; overflow: visible; }
.chart-grid-line { stroke: #dbe8ea; stroke-width: 1; }
.chart-axis-label { fill: #6b7e83; font: 11px sans-serif; }
.chart-value-label { fill: #236878; font: 700 12px sans-serif; }
.chart-line { fill: none; stroke-linecap: round; stroke-linejoin: round; stroke-width: 3; }
.chart-line--main { stroke: #238fa5; }
.chart-line--average { stroke: #ef922f; stroke-width: 4; }
.chart-dot { fill: #fff; stroke: #238fa5; stroke-width: 3; }
.chart-bar { fill: #43a9bb; }
.chart-bar:hover, .chart-dot:hover { filter: brightness(.9); }
.chart-legend { display: flex; justify-content: center; gap: 18px; margin: -3px 0 0; color: #5d7479; font-size: .75rem; }
.chart-legend span::before { display: inline-block; width: 20px; height: 4px; margin-right: 6px; border-radius: 5px; vertical-align: middle; content: ""; }
.legend-main::before { background: #238fa5; }
.legend-average::before { background: #ef922f; }
.chart-empty { display: grid; min-height: 220px; place-items: center; margin: 0; color: #71858a; }

.csv-card { margin-bottom: 14px; padding: 18px; border: 1px solid #d0e2e5; border-radius: 15px; background: #fff; }
.csv-card h3 { margin: 0 0 6px; color: #215d69; }
.csv-card p { margin: 0 0 13px; color: #60787e; font-size: .84rem; line-height: 1.7; }
.csv-button, .file-picker span { display: inline-block; padding: 9px 15px; border: 1px solid #a9cbd1; border-radius: 9px; color: #176273; background: #effcfe; font-weight: 800; cursor: pointer; }
.csv-button--primary { color: #fff; border-color: #19869a; background: #19869a; }
.csv-button--danger { color: #a22c37; border-color: #d7a3a9; background: #fff1f2; }
.csv-button:disabled { cursor: not-allowed; opacity: .45; }
.file-picker input { position: absolute; width: 1px; height: 1px; overflow: hidden; opacity: 0; }
.import-summary { display: grid; gap: 4px; margin: 14px 0; padding: 13px; border: 1px dashed #b9d0d5; border-radius: 11px; color: #657b80; background: #f8fbfc; font-size: .82rem; }
.import-summary.is-valid { border-style: solid; border-color: #a8d9c9; color: #286451; background: #f0fbf7; }
.import-summary.is-error { border-style: solid; border-color: #e0aeb4; color: #8f2934; background: #fff3f4; }
.import-actions { display: flex; flex-wrap: wrap; gap: 9px; }

/* 14桁＋カンマ＋Enterでも中央枠に収める */
.number-row { box-sizing: border-box; padding: 0 10px; white-space: nowrap; font-size: clamp(1.45rem, 5.2vw, 3.4rem); letter-spacing: clamp(.01em, .15vw, .04em); }
.number-row[data-length="10"], .number-row[data-length="11"] { font-size: clamp(1.35rem, 4.1vw, 2.65rem); }
.number-row[data-length="12"], .number-row[data-length="13"], .number-row[data-length="14"] { font-size: clamp(1.12rem, 3.45vw, 2.15rem); letter-spacing: 0; }
.number-row .question-enter { flex: 0 0 auto; }

@media (max-width: 680px) {
  .records-screen { padding: 8px; }
  .records-window { min-height: calc(100vh - 16px); padding: 14px; border-radius: 15px; }
  .result__scores { gap: 5px; }
  .result__scores p { flex-basis: 118px; padding: 9px 5px; }
  .result__scores strong { font-size: clamp(1.15rem, 5.4vw, 2.2rem); }
  #final-speed { font-size: clamp(.9rem, 3.8vw, 1.45rem); }
  .title-line { align-items: flex-start; flex-direction: column; gap: 7px; }
  .record-links { margin-bottom: 8px; }
  .records-tabs { flex-wrap: wrap; }
  .records-tabs button { flex: 1 1 120px; }
  .chart-toolbar { align-items: flex-start; flex-direction: column; }
  .chart-frame { min-height: 150px; overflow-x: auto; }
  .data-chart { min-width: 610px; }
}

.numpad-hand {
  display: flex;
  align-items: flex-end;
  gap: 4px;
  padding: 6px 10px 0;
  border-bottom: 7px solid #b8c9ce;
  border-radius: 0 0 24px 24px;
}
.numpad-finger {
  width: 34px;
}
.numpad-finger[data-finger="thumb"] {
  height: 42px;
}
.numpad-finger[data-finger="index"] {
  height: 57px;
}
.numpad-finger[data-finger="middle"] {
  height: 63px;
}
.numpad-finger[data-finger="ring"] {
  height: 57px;
}
.numpad-finger[data-finger="little"] {
  height: 46px;
}
.laser {
  position: fixed;
  z-index: 2;
  height: 9px;
  border-radius: 99px;
  background: linear-gradient(
    #0877bd 0 20%,
    #69d8ff 20% 40%,
    #fff 40% 60%,
    #69d8ff 60% 80%,
    #0877bd 80%
  );
  box-shadow:
    0 0 5px #0877bd,
    0 0 12px #39c8ff,
    0 0 24px #1e9de2cc;
  transform-origin: 0 50%;
  pointer-events: none;
  animation: laser-shot 0.2s ease-out forwards;
}
.wrong-laser {
  position: fixed;
  z-index: 20;
  height: 5px;
  border-radius: 99px;
  background: linear-gradient(#665978, #93869e, #554b61);
  box-shadow: 0 0 5px #5c4c6dbf;
  transform-origin: 0 50%;
  pointer-events: none;
  animation: wrong-laser-shot 0.11s ease-out forwards;
}
.spark {
  position: absolute;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 0 12px var(--glow);
  animation: spark-burst 0.28s ease-out forwards;
}
.message {
  min-height: 1.5em;
  margin: 10px 0 0;
  color: var(--muted);
  text-align: center;
  font-size: 0.92rem;
}
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}
[hidden] {
  display: none !important;
}
@keyframes wrong-shake {
  0%,
  100% {
    transform: translateX(0);
  }
  20% {
    transform: translateX(-5px);
  }
  40% {
    transform: translateX(5px);
  }
  60% {
    transform: translateX(-4px);
  }
  80% {
    transform: translateX(3px);
  }
}
@keyframes laser-shot {
  from {
    opacity: 1;
    clip-path: inset(0 100% 0 0);
  }
  45% {
    clip-path: inset(0);
  }
  to {
    opacity: 0;
    clip-path: inset(0);
  }
}
@keyframes wrong-laser-shot {
  from {
    opacity: 0.9;
    clip-path: inset(0 100% 0 0);
  }
  70% {
    opacity: 0.8;
    clip-path: inset(0);
  }
  to {
    opacity: 0;
  }
}
@keyframes effect-key-hit {
  to {
    opacity: 0;
    filter: blur(5px);
    transform: translate(var(--effect-x, 0), var(--effect-y, 0)) scale(1.65)
      rotate(12deg);
  }
}
@keyframes challenge-key-hit {
  to { opacity: 0; filter: blur(5px); transform: translate(var(--hit-x, 0), var(--hit-y, 0)) scale(1.65) rotate(12deg); }
}
@keyframes combo-break {
  0% { opacity: 0; }
  35% { opacity: 1; }
  100% { opacity: 0; }
}
@keyframes combo-milestone {
  0%,100% { transform: scale(1) translate(0); }
  25% { transform: scale(1.3) translate(-3px,2px) rotate(-2deg); }
  40% { transform: scale(1.24) translate(4px,-2px) rotate(2deg); }
  55% { transform: scale(1.18) translate(-3px,1px); }
}
@keyframes spark-burst {
  from {
    opacity: 1;
    transform: translate(-50%, -50%) scale(0.5);
  }
  to {
    opacity: 0;
    transform: translate(
        calc(-50% + var(--spark-x)),
        calc(-50% + var(--spark-y))
      )
      scale(0.1);
  }
}
@keyframes promote {
  from {
    opacity: 0.45;
    transform: translateY(58px) scale(0.65);
  }
  to {
    opacity: 1;
    transform: none;
  }
}
@keyframes shatter {
  to {
    opacity: 0;
    filter: blur(5px);
    transform: scale(1.55) rotate(6deg);
  }
}
@media (max-width: 720px) {
  .app {
    width: min(100% - 20px, 1100px);
    padding-top: 16px;
  }
  .app__header {
    align-items: stretch;
    flex-direction: column;
    gap: 10px;
  }
  .status {
    width: 100%;
  }
  .status__item {
    flex: 1;
    min-width: 0;
    padding: 8px 4px;
  }
  .play-area {
    height: 410px;
    border-radius: 16px;
  }
  .panel {
    padding: 16px 12px;
  }
  .mode-selector {
    grid-template-columns: repeat(2, 1fr);
  }
  .mode-option--numpad {
    grid-column: 2/3;
  }
  .mode-option--japanese { grid-column: 1/2; }
  .mode-option span {
    min-height: 49px;
  }
  .challenge-controls { flex-direction: column; gap: 7px; }
  .level-control input { width: 180px; }
  .combo-display { top: 10px; right: 10px; min-width: 125px; }
  .combo-display strong { font-size: 1.2rem; }
  .screen-keyboard {
    --key-width: 43px;
    margin-left: 0;
  }
  .keycap {
    min-height: 43px;
  }
  .hands {
    gap: 18px;
  }
  .hand {
    gap: 2px;
    padding-inline: 4px;
  }
  .guide__header {
    justify-content: space-between;
    gap: 8px;
  }
  .exit-hint {
    position: static;
  }
  .numpad-guide {
    flex-direction: column;
    gap: 16px;
  }
  .screen-numpad {
    grid-template-columns: repeat(3, 56px);
    grid-template-rows: repeat(4, 48px);
  }
  .numpad-question {
    padding-bottom: 0;
  }
  .question-enter {
    display: block;
  }
  .next-question {
    margin-top: 20px;
  }
}

@keyframes promote {
  from {
    transform: translate(var(--promote-x), var(--promote-y))
      scale(var(--promote-scale));
    transform-origin: center;
  }
  to {
    transform: none;
    transform-origin: center;
  }
}

/* テンキー：視線を固定したまま一段ずつ送る数字リール */
.numpad-question {
  padding-bottom: 0;
}
.number-reel {
  --row-step: 88px;
  position: relative;
  width: min(620px, calc(100% - 32px));
  height: 286px;
  overflow: hidden;
}
.number-reel__frame {
  position: absolute;
  z-index: 2;
  top: 50%;
  left: 50%;
  width: min(520px, calc(100% - 24px));
  height: 76px;
  border: 3px solid #55d8e8;
  border-radius: 16px;
  background: #dffbff47;
  box-shadow:
    0 0 0 5px #fff9,
    0 8px 28px #1c92a92e,
    0 0 24px #40e6ff45;
  transform: translate(-50%, -50%);
  pointer-events: none;
}
.number-track {
  position: absolute;
  inset: 0;
}
.number-row {
  position: absolute;
  z-index: 3;
  top: 50%;
  left: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  width: min(500px, calc(100% - 44px));
  height: 70px;
  color: #526477;
  font:
    850 clamp(2rem, 6vw, 3.4rem) / 1 Arial,
    sans-serif;
  letter-spacing: 0.04em;
  opacity: 0.58;
  transform: translate(-50%, calc(-50% + var(--row-offset) * var(--row-step)))
    scale(0.82);
  transition:
    transform 0.28s cubic-bezier(0.22, 0.75, 0.25, 1),
    opacity 0.28s,
    color 0.28s;
  will-change: transform, opacity;
}
.number-row[data-offset="-1"] {
  --row-offset: -1;
  opacity: 0.18;
}
.number-row[data-offset="0"] {
  --row-offset: 0;
  z-index: 4;
  color: #253044;
  opacity: 1;
  transform: translate(-50%, calc(-50% + var(--row-offset) * var(--row-step)))
    scale(1);
}
.number-row[data-offset="1"] {
  --row-offset: 1;
}
.number-row[data-offset="2"] {
  --row-offset: 2;
  opacity: 0.3;
}
.number-row.is-new {
  opacity: 0;
}
.number-row span {
  transition:
    color 0.08s,
    text-shadow 0.08s;
}
.number-row span.is-entered {
  color: #1cb9cf;
  text-shadow: 0 0 14px #40e6ff99;
}
.number-row span.is-current {
  text-decoration: underline;
  text-decoration-color: #ef9f24;
  text-underline-offset: 8px;
}
.number-row .comma {
  margin-right: 0.05em;
  color: #738595;
  font-style: normal;
}
.number-row .question-enter {
  margin-left: 0.55em;
  font-size: 0.3em;
  letter-spacing: 0;
  text-shadow: none;
}
.comma-note {
  position: absolute;
  z-index: 5;
  bottom: 12px;
  margin: 0;
}
@media (max-width: 720px) {
  .number-reel {
    --row-step: 82px;
    width: 100%;
    height: 280px;
  }
  .number-reel__frame {
    width: calc(100% - 20px);
    height: 72px;
  }
  .number-row {
    width: calc(100% - 30px);
    font-size: clamp(1.8rem, 9vw, 3rem);
  }
  .number-row .question-enter {
    margin-left: 0.35em;
  }
}

/* 実物のテンキー配置：Enterは3とドットの右側で縦2段 */
.screen-numpad {
  grid-template-columns: repeat(4, 62px);
}
.numpad-key[data-numpad-key="7"] {
  grid-area: 1/1;
}
.numpad-key[data-numpad-key="8"] {
  grid-area: 1/2;
}
.numpad-key[data-numpad-key="9"] {
  grid-area: 1/3;
}
.numpad-key[data-numpad-key="4"] {
  grid-area: 2/1;
}
.numpad-key[data-numpad-key="5"] {
  grid-area: 2/2;
}
.numpad-key[data-numpad-key="6"] {
  grid-area: 2/3;
}
.numpad-key[data-numpad-key="1"] {
  grid-area: 3/1;
}
.numpad-key[data-numpad-key="2"] {
  grid-area: 3/2;
}
.numpad-key[data-numpad-key="3"] {
  grid-area: 3/3;
}
.numpad-key[data-numpad-key="0"] {
  grid-area: 4/1/5/3;
}
.numpad-key[data-numpad-key="."] {
  grid-area: 4/3;
}
.numpad-key[data-numpad-key="Enter"] {
  grid-area: 3/4/5/5;
}

/* Ver.1.0 日本語ローマ字入力 */
.japanese-question {
  position: absolute;
  z-index: 5;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 28px;
  text-align: center;
}
.japanese-word {
  margin: 0;
  color: #263c50;
  font-size: clamp(3rem, 8vw, 5.8rem);
  font-weight: 900;
  line-height: 1.15;
  text-shadow: 0 4px 0 #e3eff1;
}
.japanese-reading {
  margin: 8px 0 20px;
  color: #65798a;
  font-size: clamp(1rem, 2.5vw, 1.35rem);
  font-weight: 800;
  letter-spacing: .12em;
}
.romaji-guide {
  min-height: 1.25em;
  margin: 0;
  color: #33475b;
  font: 900 clamp(2.2rem, 7vw, 4.7rem)/1 Arial, sans-serif;
  letter-spacing: .06em;
}
.romaji-guide span { transition: color .08s, text-shadow .08s; }
.romaji-guide .is-entered { color: #1cb9cf; text-shadow: 0 0 14px #40e6ff99; }
.romaji-guide .is-next { color: #c2660d; text-decoration: underline; text-decoration-color: #ef9f24; text-underline-offset: 9px; }
.romaji-branch-hint {
  height: 1.5em;
  margin: 13px 0 0;
  color: #526c7e;
  font-size: clamp(.9rem, 2vw, 1.05rem);
  font-weight: 800;
  line-height: 1.5;
  visibility: hidden;
  white-space: nowrap;
}
.romaji-branch-hint.is-visible { visibility: visible; }
.romaji-branch-hint strong {
  color: #c2660d;
  letter-spacing: .12em;
}
.caps-warning {
  margin: 18px 0 0;
  padding: 8px 14px;
  border: 1px solid #e8b44e;
  border-radius: 999px;
  color: #7c4800;
  background: #fff6d9;
  font-weight: 800;
}
.challenge-toggle:disabled { cursor: not-allowed; opacity: .45; }

/* Ver.1.1：英字Oと数字0を見分けやすくする（数字だけ字形を変更） */
.is-numeric,
.status dd,
.result__scores strong,
.result-details,
.ranking-result,
.summary-card strong,
.summary-card small,
.history-item p,
.ranking-item,
.chart-toolbar,
.chart-axis-label,
.chart-value-label,
.import-summary,
.checker-summary {
  font-family: Consolas, "Cascadia Mono", "DejaVu Sans Mono", "Liberation Mono", monospace;
  font-variant-numeric: slashed-zero tabular-nums;
  font-feature-settings: "zero" 1, "tnum" 1;
}
.checker-card code { padding: 2px 5px; border-radius: 5px; background: #edf5f6; }
.checker-summary { margin: 14px 0; padding: 13px; border: 1px solid #b9d0d5; border-radius: 11px; color: #657b80; background: #f8fbfc; font-size: .84rem; font-weight: 800; }
.checker-summary.is-valid { border-color: #a8d9c9; color: #286451; background: #f0fbf7; }
.checker-summary.is-warning { border-color: #e5c36f; color: #79520a; background: #fff9e9; }
.checker-summary.is-error { border-color: #e0aeb4; color: #8f2934; background: #fff3f4; }
.checker-filter { display: flex; flex-wrap: wrap; gap: 7px; margin-bottom: 12px; }
.checker-filter button { padding: 7px 13px; border: 1px solid #b8d0d5; border-radius: 99px; color: #526b70; background: #fff; font-weight: 800; cursor: pointer; }
.checker-filter button.is-active { color: #fff; border-color: #19869a; background: #19869a; }
.checker-results { display: grid; gap: 9px; max-height: 430px; overflow: auto; }
.checker-result { padding: 12px 14px; border-left: 5px solid #60ae91; border-radius: 10px; background: #f4fbf8; }
.checker-result.is-warning { border-left-color: #d4a12d; background: #fffaf0; }
.checker-result.is-error { border-left-color: #ce5360; background: #fff4f5; }
.checker-result h4 { margin: 0 0 5px; font-size: .93rem; }
.checker-result p { margin: 3px 0; color: #5b7075; font-size: .8rem; line-height: 1.55; }
@media (max-width: 720px) {
  .screen-numpad {
    grid-template-columns: repeat(4, 56px);
  }
  .japanese-question { padding: 18px; }
  .japanese-reading { margin-bottom: 14px; }
}
@media (prefers-reduced-motion: reduce) {
  *,
  *:before,
  *:after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}