:root {
  color-scheme: light;
  --bg: #f7faf9;
  --surface: #ffffff;
  --surface-strong: #eef5f2;
  --text: #15211d;
  --muted: #5f6f69;
  --line: #d9e5e0;
  --accent: #007a68;
  --accent-strong: #005b50;
  --accent-soft: #dff4ee;
  --amber: #d47b00;
  --danger: #b83b2d;
  --shadow: 0 18px 48px rgba(22, 45, 38, 0.12);
  --radius: 8px;
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic", "Meiryo", sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
  margin: 0;
}

body {
  background:
    linear-gradient(135deg, rgba(0, 122, 104, 0.08), transparent 38%),
    linear-gradient(225deg, rgba(212, 123, 0, 0.08), transparent 42%),
    var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  overflow-y: auto;
  user-select: none;
  -webkit-user-select: none;
}

button,
input,
select {
  font: inherit;
}

button {
  border: 0;
  cursor: pointer;
  touch-action: manipulation;
}

[hidden] {
  display: none !important;
}

button:focus-visible,
input:focus-visible {
  outline: 4px solid rgba(0, 122, 104, 0.28);
  outline-offset: 3px;
}

select:focus-visible {
  outline: 4px solid rgba(0, 122, 104, 0.28);
  outline-offset: 3px;
}

.language-button {
  position: fixed;
  z-index: 10;
  top: max(14px, env(safe-area-inset-top));
  right: max(14px, env(safe-area-inset-right));
  min-width: 92px;
  min-height: 44px;
  padding: 8px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.94);
  color: var(--accent-strong);
  box-shadow: 0 6px 18px rgba(22, 45, 38, 0.1);
  font-weight: 800;
}

.app-shell {
  min-height: 100dvh;
  display: grid;
  align-items: safe center;
  justify-items: center;
  padding: max(24px, env(safe-area-inset-top)) max(24px, env(safe-area-inset-right)) max(24px, env(safe-area-inset-bottom)) max(24px, env(safe-area-inset-left));
}

.usage-counter {
  position: fixed;
  z-index: 5;
  left: max(12px, env(safe-area-inset-left));
  bottom: max(8px, env(safe-area-inset-bottom));
  display: flex;
  gap: 8px;
  margin: 0;
  color: var(--muted);
  font-size: 0.68rem;
  letter-spacing: 0.02em;
  opacity: 0.72;
}

.usage-counter strong {
  color: var(--text);
  font-weight: 700;
}

.setup-panel,
.complete-panel {
  width: min(960px, 100%);
  background: rgba(255, 255, 255, 0.88);
  border: 1px solid rgba(217, 229, 224, 0.9);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: clamp(24px, 4vw, 48px);
}

.setup-panel {
  display: grid;
  gap: clamp(24px, 4vw, 38px);
}

.setup-copy {
  display: grid;
  gap: 8px;
}


.rights-banner {
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-left: 5px solid var(--accent);
  border-radius: var(--radius);
  background: var(--accent-soft);
  color: var(--muted);
  font-size: 0.78rem;
  line-height: 1.6;
  user-select: text;
  -webkit-user-select: text;
}

.rights-banner p {
  margin: 0;
}

.rights-banner p + p {
  margin-top: 3px;
}

.rights-banner strong,
.rights-banner a {
  color: var(--accent-strong);
  font-weight: 800;
}

.rights-banner a {
  text-underline-offset: 3px;
}

html[lang="ja"] .rights-en,
html[lang="en"] .rights-ja {
  display: none;
}

.sound-settings {
  display: grid;
  grid-template-columns: minmax(180px, 0.8fr) minmax(260px, 1.2fr);
  gap: 18px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface-strong);
}

.sound-field,
.sound-toggle {
  display: grid;
  gap: 8px;
  color: var(--muted);
  font-size: 0.94rem;
  font-weight: 800;
}

.sound-field select {
  min-height: 48px;
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--text);
}

.sound-toggle {
  align-content: center;
}

.toggle-control {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 48px;
  color: var(--text);
}

.toggle-control input {
  appearance: none;
  width: 54px;
  height: 30px;
  margin: 0;
  border-radius: 15px;
  background: #87938f;
  position: relative;
  cursor: pointer;
}

.toggle-control input::after {
  content: "";
  position: absolute;
  width: 24px;
  height: 24px;
  top: 3px;
  left: 3px;
  border-radius: 50%;
  background: #ffffff;
  transition: transform 160ms ease;
}

.toggle-control input:checked {
  background: var(--accent);
}

.toggle-control input:checked::after {
  transform: translateX(24px);
}

.app-label,
.phase-eyebrow {
  margin: 0;
  color: var(--accent-strong);
  font-size: clamp(0.9rem, 1.4vw, 1rem);
  font-weight: 800;
  letter-spacing: 0;
}

h1,
h2,
p {
  margin: 0;
}

h1 {
  font-size: clamp(2rem, 4.4vw, 3.8rem);
  line-height: 1.08;
  font-weight: 850;
}

.setup-copy p:last-child,
.phase-message {
  color: var(--muted);
  font-size: clamp(1rem, 1.9vw, 1.25rem);
  line-height: 1.5;
}

.duration-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.duration-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  display: grid;
  gap: 20px;
  padding: 22px;
}

.duration-card > div:first-child {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
}

.duration-label {
  color: var(--muted);
  font-size: 1rem;
  font-weight: 700;
}

.duration-card strong {
  flex: 0 0 auto;
  white-space: nowrap;
  font-size: clamp(1.65rem, 2.8vw, 2.5rem);
  line-height: 1;
}

.stepper {
  display: grid;
  grid-template-columns: 64px minmax(88px, 1fr) 64px;
  gap: 10px;
  align-items: center;
}

.presentation-controls {
  display: grid;
  gap: 10px;
}

.time-unit-control {
  display: grid;
  grid-template-columns: 28px minmax(0, 1fr);
  gap: 8px;
  align-items: center;
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 800;
}

.icon-button,
.stepper input {
  height: 60px;
  border-radius: var(--radius);
}

.icon-button {
  background: var(--surface-strong);
  color: var(--accent-strong);
  font-size: 2rem;
  font-weight: 800;
}

.stepper input {
  width: 100%;
  border: 1px solid var(--line);
  color: var(--text);
  text-align: center;
  font-size: 1.6rem;
  font-weight: 800;
}

.setup-actions,
.complete-actions,
.timer-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: center;
}

.primary-button,
.secondary-button,
.ghost-button {
  min-height: 64px;
  border-radius: var(--radius);
  padding: 0 28px;
  font-size: 1.15rem;
  font-weight: 800;
}

.primary-button {
  background: var(--accent);
  color: white;
  box-shadow: 0 12px 28px rgba(0, 122, 104, 0.24);
}

.secondary-button {
  background: var(--surface);
  color: var(--accent-strong);
  border: 1px solid var(--line);
}

.ghost-button {
  background: transparent;
  color: var(--muted);
}

.compact {
  min-height: 48px;
  padding: 0 18px;
  font-size: 0.95rem;
}

.timer-panel {
  width: min(1180px, 100%);
  height: calc(100dvh - max(48px, env(safe-area-inset-top) + env(safe-area-inset-bottom)));
  display: grid;
  grid-template-rows: auto 1fr auto auto;
  gap: clamp(16px, 3vw, 28px);
}

.timer-topbar {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
}

.timer-topbar h2 {
  font-size: clamp(1.6rem, 3vw, 2.8rem);
  line-height: 1.05;
}

.mini-summary {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.mini-summary span {
  background: rgba(255, 255, 255, 0.76);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--muted);
  padding: 10px 12px;
  font-size: 0.95rem;
  font-weight: 700;
}

.mini-summary b {
  color: var(--text);
}

.time-stage {
  display: grid;
  place-items: center;
  align-content: center;
  gap: clamp(12px, 2vw, 22px);
  min-height: 0;
}

.time-display {
  color: var(--text);
  font-variant-numeric: tabular-nums;
  font-size: clamp(6rem, 22vw, 18rem);
  font-weight: 900;
  line-height: 0.88;
  letter-spacing: 0;
  text-align: center;
}

.phase-message {
  text-align: center;
}

.progress-wrap {
  height: 14px;
  overflow: hidden;
  border-radius: 999px;
  background: rgba(21, 33, 29, 0.1);
}

.progress-bar {
  width: 100%;
  height: 100%;
  border-radius: inherit;
  background: var(--accent);
  transform-origin: left center;
  transform: scaleX(1);
  transition: transform 220ms linear, background-color 180ms ease;
}

.timer-actions {
  justify-content: center;
}

.complete-panel {
  text-align: center;
  display: grid;
  justify-items: center;
  gap: 20px;
}

.complete-panel h2 {
  font-size: clamp(2rem, 5vw, 4rem);
  line-height: 1.1;
}

.complete-time {
  font-variant-numeric: tabular-nums;
  font-size: clamp(5rem, 16vw, 12rem);
  line-height: 0.9;
  font-weight: 900;
  color: var(--accent-strong);
}

.complete-actions {
  justify-content: center;
}

.is-qa {
  --accent: #d47b00;
  --accent-strong: #945300;
  --accent-soft: #fff1d8;
}

.is-finished {
  --accent: #b83b2d;
  --accent-strong: #84251b;
}

.flash {
  animation: flash 520ms ease-out;
}

@keyframes flash {
  0% {
    background-color: rgba(212, 123, 0, 0.24);
  }
  100% {
    background-color: transparent;
  }
}

@media (orientation: portrait) {
  .timer-panel {
    height: calc(100dvh - 40px);
  }

  .time-display {
    font-size: clamp(5.2rem, 27vw, 14rem);
  }
}

@media (max-height: 760px) and (min-width: 761px) {
  body {
    overflow: auto;
  }

  .app-shell {
    place-items: start center;
    padding: 16px;
  }

  .setup-panel {
    gap: 14px;
    padding: 18px;
  }

  .setup-copy {
    gap: 4px;
  }

  .setup-copy h1 {
    font-size: 2rem;
  }

  .duration-card {
    grid-template-columns: 1fr;
    gap: 10px;
    padding: 14px;
  }

  .icon-button,
  .stepper input {
    height: 48px;
  }

  .sound-settings {
    padding: 12px 14px;
  }
}

@media (max-width: 760px) {
  body {
    overflow: auto;
  }

  .app-shell {
    min-height: 100svh;
    padding: 16px;
  }

  .duration-grid {
    grid-template-columns: 1fr;
  }

  .sound-settings {
    grid-template-columns: 1fr;
  }

  .timer-panel {
    min-height: calc(100svh - 32px);
    height: auto;
  }

  .timer-topbar {
    flex-direction: column;
  }

  .mini-summary {
    justify-content: flex-start;
  }

  .time-display {
    font-size: clamp(4.6rem, 25vw, 9rem);
  }

  .primary-button,
  .secondary-button,
  .ghost-button {
    width: 100%;
  }

  .timer-actions .compact {
    width: auto;
    flex: 1 1 30%;
  }
}

@media (max-width: 480px) {
  .language-button {
    min-width: 78px;
    min-height: 40px;
    padding: 6px 10px;
    font-size: 0.85rem;
  }

  .setup-panel,
  .complete-panel {
    padding: 16px;
  }

  .setup-panel {
    gap: 12px;
  }

  .setup-copy {
    padding-right: 72px;
  }

  .setup-copy h1 {
    font-size: 1.8rem;
  }

  .duration-card {
    gap: 10px;
    padding: 12px;
  }

  .presentation-controls {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px;
  }

  .time-unit-control {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .stepper {
    grid-template-columns: 44px minmax(44px, 1fr) 44px;
    gap: 5px;
  }

  .icon-button,
  .stepper input {
    height: 48px;
  }

  .sound-settings {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
    padding: 12px;
  }

  .sound-field,
  .sound-toggle {
    gap: 5px;
    font-size: 0.82rem;
  }

  .sound-field select,
  .toggle-control {
    min-height: 44px;
  }

  .setup-actions {
    flex-wrap: nowrap;
  }

  .setup-actions .primary-button,
  .setup-actions .secondary-button {
    width: auto;
    min-width: 0;
    flex: 1 1 50%;
  }

  .time-display {
    font-size: clamp(6rem, 32vw, 9rem);
  }
}

@media (orientation: landscape) and (max-height: 500px) {
  .language-button {
    top: max(8px, env(safe-area-inset-top));
    right: max(8px, env(safe-area-inset-right));
    min-width: 78px;
    min-height: 38px;
    padding: 5px 9px;
    font-size: 0.82rem;
  }

  .app-shell {
    min-height: 100dvh;
    padding: max(10px, env(safe-area-inset-top)) max(10px, env(safe-area-inset-right)) max(10px, env(safe-area-inset-bottom)) max(10px, env(safe-area-inset-left));
  }

  .setup-panel {
    gap: 8px;
    padding: 10px;
  }

  .setup-copy {
    gap: 2px;
    padding-right: 86px;
  }

  .app-label,
  .phase-eyebrow {
    font-size: 0.75rem;
  }

  .setup-copy h1 {
    font-size: 1.45rem;
  }

  .setup-copy p:last-child,
  .phase-message {
    font-size: 0.82rem;
    line-height: 1.2;
  }

  .duration-grid {
    gap: 8px;
  }

  .duration-card {
    grid-template-columns: 1fr;
    gap: 6px;
    padding: 8px;
  }

  .duration-card strong {
    font-size: 1.35rem;
  }

  .presentation-controls {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 6px;
  }

  .time-unit-control {
    grid-template-columns: 1fr;
    gap: 2px;
    font-size: 0.75rem;
  }

  .stepper {
    grid-template-columns: 40px minmax(42px, 1fr) 40px;
    gap: 4px;
  }

  .icon-button,
  .stepper input {
    height: 40px;
  }

  .icon-button {
    font-size: 1.5rem;
  }

  .stepper input {
    font-size: 1.15rem;
  }

  .sound-settings {
    grid-template-columns: minmax(150px, 0.8fr) minmax(180px, 1.2fr);
    gap: 10px;
    padding: 7px 10px;
  }

  .sound-field,
  .sound-toggle {
    grid-template-columns: auto minmax(100px, 1fr);
    align-items: center;
    gap: 8px;
    font-size: 0.78rem;
  }

  .sound-field select,
  .toggle-control {
    min-height: 38px;
  }

  .setup-actions {
    flex-wrap: nowrap;
    gap: 8px;
  }

  .setup-actions .primary-button,
  .setup-actions .secondary-button,
  .timer-actions .compact {
    min-height: 40px;
    padding: 0 14px;
    font-size: 0.86rem;
  }

  .timer-panel {
    height: calc(100dvh - 20px);
    gap: 8px;
  }

  .timer-topbar {
    padding-right: 86px;
  }

  .timer-topbar h2 {
    font-size: 1.35rem;
  }

  .mini-summary span {
    padding: 5px 7px;
    font-size: 0.74rem;
  }

  .time-stage {
    gap: 6px;
  }

  .time-display {
    font-size: clamp(4.5rem, 30vh, 8rem);
  }

  .progress-wrap {
    height: 8px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.001ms !important;
  }
}