:root {
  color-scheme: light;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "PingFang SC", "Helvetica Neue", sans-serif;
  --page: #f3f5f2;
  --surface: #ffffff;
  --ink: #111513;
  --muted: #707772;
  --line: #dce1dc;
  --line-strong: #cbd3cc;
  --accent: #2d66ee;
  --accent-deep: #174fcf;
  --accent-soft: #e9efff;
  --active: #1b9a68;
  --active-soft: #e0f4eb;
  --warning: #9a5b0a;
  --warning-soft: #fff4dc;
  --danger: #c63c42;
  --danger-soft: #fdebed;
  --shadow: 0 18px 50px rgba(31, 38, 33, 0.08);
}

* { box-sizing: border-box; }

[hidden] { display: none !important; }

html {
  min-height: 100%;
  background: var(--page);
  -webkit-text-size-adjust: 100%;
}

body {
  min-width: 320px;
  min-height: 100%;
  margin: 0;
  overflow-x: hidden;
  background:
    radial-gradient(circle at 10% 3%, rgba(45, 102, 238, 0.08), transparent 30rem),
    var(--page);
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
}

button,
input { font: inherit; }

button {
  -webkit-tap-highlight-color: transparent;
  cursor: pointer;
}

button:focus-visible,
input:focus-visible {
  outline: 3px solid rgba(45, 102, 238, 0.3);
  outline-offset: 3px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.app-shell {
  width: min(100%, 720px);
  min-height: 100svh;
  margin: 0 auto;
  padding:
    max(20px, env(safe-area-inset-top))
    max(18px, env(safe-area-inset-right))
    max(28px, env(safe-area-inset-bottom))
    max(18px, env(safe-area-inset-left));
}

.app-header {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 12px;
  margin-bottom: 18px;
}

.brand-mark {
  display: flex;
  align-items: flex-end;
  justify-content: center;
  gap: 3px;
  width: 42px;
  height: 42px;
  padding: 10px;
  border-radius: 13px;
  background: var(--ink);
  box-shadow: 0 8px 20px rgba(17, 21, 19, 0.16);
}

.brand-mark span {
  width: 4px;
  border-radius: 999px;
  background: #fff;
}

.brand-mark span:nth-child(1) { height: 9px; opacity: 0.72; }
.brand-mark span:nth-child(2) { height: 20px; }
.brand-mark span:nth-child(3) { height: 14px; opacity: 0.82; }

.eyebrow,
.control-kicker {
  margin: 0;
  color: var(--muted);
  font-size: 0.66rem;
  font-weight: 760;
  letter-spacing: 0.14em;
}

.app-header h1 {
  margin: 2px 0 0;
  font-size: 1.2rem;
  line-height: 1.15;
  letter-spacing: -0.035em;
}

.mode-badge,
.status-pill,
.pattern-pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 7px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.72);
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 700;
  white-space: nowrap;
}

.surface-card {
  border: 1px solid rgba(203, 211, 204, 0.8);
  background: rgba(255, 255, 255, 0.9);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}

.setup-hero {
  position: relative;
  overflow: hidden;
  padding: 20px;
  border-radius: 28px;
}

.setup-hero::before {
  content: "";
  position: absolute;
  inset: -45% 40% 55% -10%;
  border-radius: 50%;
  background: rgba(45, 102, 238, 0.065);
  pointer-events: none;
}

.section-topline,
.control-heading,
.result-heading,
.session-topline {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

.section-topline h2,
.control-heading h2,
.calibration-card h2 {
  margin: 3px 0 0;
  font-size: 1rem;
  font-weight: 730;
}

.pattern-pill {
  border-color: rgba(45, 102, 238, 0.18);
  background: var(--accent-soft);
  color: var(--accent-deep);
}

.tempo-display {
  position: relative;
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 8px;
  margin: 15px 0 14px;
}

.tempo-display strong {
  font-size: clamp(3.5rem, 18vw, 6rem);
  font-weight: 680;
  line-height: 0.96;
  letter-spacing: -0.075em;
  font-variant-numeric: tabular-nums;
}

.tempo-display span {
  color: var(--muted);
  font-size: 0.8rem;
  font-weight: 740;
  letter-spacing: 0.12em;
}

.mini-sequence {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.mini-sequence span {
  display: grid;
  width: 32px;
  height: 32px;
  place-items: center;
  border-radius: 50%;
  background: var(--ink);
  color: #fff;
  font-size: 0.74rem;
  font-weight: 760;
}

.mini-sequence i {
  width: clamp(10px, 4vw, 22px);
  height: 1px;
  background: var(--line-strong);
}

.hero-note,
.footer-note,
.fine-print {
  color: var(--muted);
  text-align: center;
}

.hero-note {
  margin: 13px 0 0;
  font-size: 0.73rem;
}

.control-panel,
.calibration-card,
.result-section {
  margin-top: 14px;
  padding: 20px;
  border-radius: 24px;
}

.number-field {
  display: flex;
  align-items: baseline;
  gap: 5px;
  padding: 7px 10px 7px 12px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #f7f8f6;
}

.number-field input {
  width: 62px;
  padding: 0;
  border: 0;
  outline: 0;
  background: transparent;
  color: var(--ink);
  font-size: 1.28rem;
  font-weight: 690;
  line-height: 1;
  text-align: right;
  font-variant-numeric: tabular-nums;
  appearance: textfield;
}

.number-field input::-webkit-inner-spin-button,
.number-field input::-webkit-outer-spin-button { appearance: none; }

.number-field span {
  color: var(--muted);
  font-size: 0.65rem;
  font-weight: 720;
}

.range-wrap { display: block; margin-top: 17px; }

.range-wrap input {
  width: 100%;
  height: 24px;
  margin: 0;
  background: transparent;
  accent-color: var(--accent);
}

.range-wrap input::-webkit-slider-runnable-track {
  height: 5px;
  border-radius: 999px;
  background: linear-gradient(
    to right,
    var(--accent) 0 var(--range-fill, 33.33%),
    #dfe3df var(--range-fill, 33.33%) 100%
  );
}

.range-wrap input::-webkit-slider-thumb {
  width: 22px;
  height: 22px;
  margin-top: -8.5px;
  border: 4px solid #fff;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 2px 9px rgba(24, 80, 214, 0.3);
  appearance: none;
}

.range-limits {
  display: flex;
  justify-content: space-between;
  margin-top: -1px;
  color: #969d98;
  font-size: 0.64rem;
  font-variant-numeric: tabular-nums;
}

.step-controls,
.segment-group {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
}

.step-controls { margin-top: 13px; }
.segment-group { margin-top: 13px; }

.step-button,
.segment-group button {
  min-height: 42px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #f8f9f7;
  color: #4e554f;
  font-weight: 690;
  touch-action: manipulation;
  user-select: none;
}

.step-button:active,
.segment-group button:active,
.secondary-button:active,
.text-button:active { transform: scale(0.97); }

.segment-group button.is-selected {
  border-color: var(--ink);
  background: var(--ink);
  color: #fff;
  box-shadow: 0 7px 16px rgba(17, 21, 19, 0.16);
}

.divider { height: 1px; margin: 20px 0; background: var(--line); }

.subdivision-control { padding: 0; margin: 0; border: 0; }
.subdivision-control legend { width: 100%; padding: 0; }
.subdivision-control legend strong { display: block; margin-top: 3px; font-size: 1rem; }

.warning-card {
  margin-top: 15px;
  padding: 11px 12px;
  border: 1px solid rgba(154, 91, 10, 0.18);
  border-radius: 12px;
  background: var(--warning-soft);
  color: #80500f;
  font-size: 0.72rem;
  line-height: 1.45;
}

.status-pill.is-calibrated {
  border-color: rgba(27, 154, 104, 0.18);
  background: var(--active-soft);
  color: #16744f;
}

.calibration-details { margin-top: 14px; }

.calibration-details p {
  margin: 0;
  color: var(--muted);
  font-size: 0.76rem;
  line-height: 1.55;
}

.calibration-values {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 9px;
}

.calibration-values div {
  padding: 11px 12px;
  border-radius: 12px;
  background: #f5f7f4;
}

.calibration-values span { display: block; color: var(--muted); font-size: 0.64rem; }
.calibration-values strong { display: block; margin-top: 3px; font-size: 0.9rem; }

.button-row { display: flex; gap: 10px; }
.calibration-actions { margin-top: 15px; }

.primary-button,
.secondary-button,
.stop-button,
.text-button {
  border-radius: 16px;
  font-weight: 730;
  transition: transform 100ms ease, background-color 150ms ease, box-shadow 150ms ease;
}

.primary-button {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  width: 100%;
  min-height: 58px;
  margin-top: 14px;
  border: 0;
  background: var(--accent);
  box-shadow: 0 14px 28px rgba(45, 102, 238, 0.24);
  color: #fff;
  font-size: 1rem;
}

.primary-button:active { transform: scale(0.985); }

.secondary-button,
.text-button {
  min-height: 42px;
  padding: 0 16px;
  border: 1px solid var(--line);
  background: #f7f8f6;
  color: var(--ink);
}

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

.primary-button.compact,
.secondary-button.compact {
  flex: 1;
  min-height: 52px;
  margin: 0;
}

.play-icon {
  width: 0;
  height: 0;
  border-top: 6px solid transparent;
  border-bottom: 6px solid transparent;
  border-left: 10px solid currentColor;
}

.setup-notice {
  margin-top: 14px;
  padding: 11px 12px;
  border-radius: 12px;
  background: var(--active-soft);
  color: #166d4c;
  font-size: 0.73rem;
  line-height: 1.5;
}

.setup-notice[data-tone="error"] { background: var(--danger-soft); color: #9d3037; }

.fine-print { margin: 12px 0 0; font-size: 0.66rem; line-height: 1.5; text-align: left; }
.footer-note { margin: 13px 0 0; font-size: 0.68rem; line-height: 1.5; }

/* Active session */
.session-view {
  display: flex;
  min-height: calc(100svh - 112px - env(safe-area-inset-top) - env(safe-area-inset-bottom));
  flex-direction: column;
}

.live-status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 700;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--active);
  box-shadow: 0 0 0 4px rgba(27, 154, 104, 0.14);
}

.session-config {
  color: var(--accent-deep);
  font-size: 0.75rem;
  font-weight: 720;
}

.feedback-panel {
  min-height: 148px;
  padding: 24px 12px 16px;
  text-align: center;
}

.session-progress {
  margin: 0 0 8px;
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 710;
  letter-spacing: 0.06em;
}

.feedback-value {
  display: block;
  font-size: clamp(2.8rem, 14vw, 5rem);
  font-weight: 720;
  line-height: 1;
  letter-spacing: -0.055em;
  font-variant-numeric: tabular-nums;
}

.feedback-label {
  display: block;
  min-height: 1.2em;
  margin-top: 8px;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 710;
  letter-spacing: 0.04em;
}

.feedback-panel[data-judgement="Excellent"] .feedback-value,
.feedback-panel[data-judgement="Great"] .feedback-value { color: var(--active); }
.feedback-panel[data-judgement="Good"] .feedback-value { color: var(--warning); }
.feedback-panel[data-judgement="Miss"] .feedback-value,
.feedback-panel[data-judgement="Extra"] .feedback-value { color: var(--danger); }

.training-pads {
  display: grid;
  flex: 1;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(10px, 3vw, 18px);
  min-height: min(48svh, 430px);
}

.training-pad {
  position: relative;
  display: flex;
  min-width: 0;
  min-height: 260px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  border: 1px solid var(--line-strong);
  border-radius: 30px;
  background:
    radial-gradient(circle at 38% 28%, rgba(255, 255, 255, 0.95), transparent 35%),
    #e9ece8;
  color: #737b75;
  touch-action: none;
  user-select: none;
  -webkit-user-select: none;
  transition: transform 70ms ease, background-color 80ms linear, border-color 80ms linear, box-shadow 80ms linear;
}

.training-pad strong {
  position: relative;
  z-index: 2;
  font-size: clamp(4.5rem, 24vw, 8rem);
  font-weight: 650;
  line-height: 0.9;
  letter-spacing: -0.06em;
}

.pad-kicker,
.pad-caption {
  position: relative;
  z-index: 2;
  font-size: 0.68rem;
  font-style: normal;
  font-weight: 760;
  letter-spacing: 0.13em;
}

.pad-caption { margin-top: 13px; color: var(--muted); letter-spacing: 0; }

.training-pad.is-target {
  border-color: rgba(45, 102, 238, 0.72);
  background: var(--accent-soft);
  color: var(--accent-deep);
  box-shadow: inset 0 0 0 5px rgba(45, 102, 238, 0.09), 0 12px 30px rgba(45, 102, 238, 0.16);
  transform: scale(1.012);
}

.training-pad.is-pressed {
  border-color: rgba(27, 154, 104, 0.68);
  background: var(--active-soft);
  color: #13734d;
  transform: scale(0.985);
}

.target-wave {
  position: absolute;
  inset: 50%;
  border-radius: 50%;
  background: var(--accent);
  opacity: 0;
  transform: translate(-50%, -50%) scale(0);
  pointer-events: none;
}

.training-pad.is-target .target-wave {
  animation: target-wave var(--pulse-duration, 110ms) ease-out both;
}

@keyframes target-wave {
  0% { width: 0; height: 0; opacity: 0.18; }
  100% { width: 150%; height: 150%; opacity: 0; }
}

.stop-button {
  width: 100%;
  min-height: 46px;
  margin-top: 12px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.68);
  color: var(--muted);
}

/* Results */
.results-hero {
  padding: 24px 20px;
  border-radius: 28px;
  text-align: center;
}

.results-hero h2 { margin: 5px 0 6px; font-size: 1.65rem; letter-spacing: -0.04em; }
.results-hero p:not(.eyebrow) { margin: 0 0 14px; color: var(--muted); font-size: 0.76rem; }

.result-heading h3 { margin: 3px 0 0; font-size: 1rem; }
.result-heading > span { color: var(--muted); font-size: 0.68rem; font-weight: 700; }

.execution-grid,
.timing-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 7px;
  margin-top: 15px;
}

.metric,
.timing-metric {
  min-width: 0;
  padding: 12px 7px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #f7f8f6;
  text-align: center;
}

.metric span,
.timing-metric span {
  display: block;
  overflow: hidden;
  color: var(--muted);
  font-size: 0.62rem;
  font-weight: 700;
  text-overflow: ellipsis;
}

.metric strong,
.timing-metric strong {
  display: block;
  margin-top: 5px;
  font-size: 1.35rem;
  font-variant-numeric: tabular-nums;
}

.metric small { display: block; margin-top: 2px; color: var(--muted); font-size: 0.58rem; }
.metric.excellent { background: var(--active-soft); }
.metric.great { background: var(--accent-soft); }
.metric.good { background: var(--warning-soft); }
.metric.miss { background: var(--danger-soft); }
.timing-metric.fast strong { color: var(--accent-deep); }
.timing-metric.late strong { color: var(--danger); }

.miss-breakdown {
  display: flex;
  flex-wrap: wrap;
  gap: 7px 14px;
  margin-top: 12px;
  color: var(--muted);
  font-size: 0.67rem;
}

.miss-breakdown strong { color: var(--ink); font-variant-numeric: tabular-nums; }

.extra-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 13px;
  padding: 11px 12px;
  border-radius: 12px;
  background: #f4f5f3;
  color: var(--muted);
  font-size: 0.74rem;
}

.extra-row strong { color: var(--ink); font-size: 1rem; }
.result-actions { margin-top: 14px; }

@media (min-width: 600px) {
  .app-shell { padding-top: 30px; padding-bottom: 40px; }
  .setup-hero,
  .control-panel,
  .calibration-card,
  .result-section { padding-inline: 26px; }
}

@media (max-width: 430px) {
  .app-header h1 { font-size: 1.08rem; }
  .training-pad { min-height: 240px; border-radius: 24px; }
  .execution-grid,
  .timing-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 359px) {
  .app-shell { padding-inline: 12px; }
  .setup-hero,
  .control-panel,
  .calibration-card,
  .result-section { border-radius: 21px; }
  .mode-badge { display: none; }
  .tempo-display strong { font-size: 3.35rem; }
  .training-pad { min-height: 220px; }
  .feedback-panel { min-height: 130px; }
}

@media (orientation: landscape) and (min-width: 600px) and (max-height: 620px) {
  .app-shell { width: min(100%, 920px); padding-top: 12px; padding-bottom: 12px; }
  .app-header { margin-bottom: 8px; }
  .session-view {
    display: grid;
    min-height: calc(100svh - 76px);
    grid-template-columns: minmax(190px, 0.65fr) minmax(420px, 1.35fr);
    grid-template-rows: auto 1fr auto;
    gap: 8px 16px;
  }
  .session-topline { grid-column: 1 / -1; }
  .feedback-panel { align-self: center; min-height: 0; padding: 12px 0; }
  .training-pads { grid-column: 2; grid-row: 2; min-height: 0; }
  .training-pad { min-height: 0; border-radius: 24px; }
  .stop-button { grid-column: 1 / -1; margin-top: 0; min-height: 38px; }
}

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