:root {
  color-scheme: light;
  --bg: #f8fcf9;
  --bg-soft: #edf7f1;
  --ink: #13231d;
  --muted: #4f625a;
  --line: rgba(35, 73, 59, 0.18);
  --accent: #2bbba0;
  --accent-warm: #e99462;
  --panel: rgba(255, 255, 255, 0.84);
  --panel-strong: rgba(255, 255, 255, 0.98);
  --shadow: 0 14px 34px rgba(40, 80, 63, 0.1);
  --tap: 54px;
  --radius: 8px;
  font-family: "Iowan Old Style", "Palatino Linotype", Palatino, "Book Antiqua", Georgia, serif;
}

[data-theme="dark"] {
  color-scheme: dark;
  --bg: #08110f;
  --bg-soft: #101d1a;
  --ink: #f8f3e7;
  --muted: #a9b8b2;
  --line: rgba(248, 243, 231, 0.14);
  --accent: #68d8c6;
  --accent-warm: #f4a261;
  --panel: rgba(248, 243, 231, 0.07);
  --panel-strong: rgba(248, 243, 231, 0.11);
  --shadow: 0 24px 70px rgba(0, 0, 0, 0.38);
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

html {
  min-height: 100%;
  background: var(--bg);
}

body {
  min-height: 100%;
  margin: 0;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.86), rgba(255, 255, 255, 0.22) 34%),
    linear-gradient(145deg, var(--bg) 0%, #eef9f2 48%, #eef7fb 100%);
  color: var(--ink);
  letter-spacing: 0;
  -webkit-font-smoothing: antialiased;
}

button,
input,
select {
  font: inherit;
}

button,
label,
select {
  -webkit-tap-highlight-color: transparent;
}

button {
  border: 0;
  cursor: pointer;
}

.app-shell {
  width: min(100%, 580px);
  min-height: 100dvh;
  margin: 0 auto;
  padding: calc(env(safe-area-inset-top) + 20px) 18px calc(env(safe-area-inset-bottom) + 22px);
}

.topbar,
.session-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.topbar {
  margin-bottom: 20px;
}

.eyebrow {
  margin: 0 0 7px;
  color: var(--accent);
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 0;
  font-family: "Didot", "Bodoni 72", "Iowan Old Style", Georgia, serif;
  font-size: clamp(2.4rem, 14vw, 4.4rem);
  font-weight: 700;
  line-height: 0.94;
}

h2 {
  margin-bottom: 10px;
  font-family: "Didot", "Bodoni 72", "Iowan Old Style", Georgia, serif;
  font-size: clamp(2rem, 10vw, 3.4rem);
  line-height: 0.98;
  color: var(--ink);
}

h3 {
  margin-bottom: 10px;
  font-size: 1rem;
  color: var(--ink);
}

.muted {
  color: var(--muted);
}

.screen {
  display: none;
}

.screen.active {
  display: block;
  animation: lift 280ms ease both;
}

.hero-panel,
.detail-card,
.why-card,
.rating-panel,
.history-block {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.hero-panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 74px;
  align-items: center;
  gap: 16px;
  min-height: 132px;
  padding: 20px;
  margin-bottom: 16px;
}

.mini-orbit {
  width: 74px;
  aspect-ratio: 1;
  border: 1px solid color-mix(in srgb, var(--accent), transparent 30%);
  border-radius: 50%;
  background:
    radial-gradient(circle, var(--accent-warm) 0 18%, transparent 19%),
    radial-gradient(circle, transparent 0 48%, var(--accent) 49% 52%, transparent 53%);
  animation: breatheMini 10s ease-in-out infinite;
}

.technique-list {
  display: grid;
  gap: 12px;
}

.technique-card {
  position: relative;
  display: block;
  min-height: 118px;
  padding: 18px 18px 18px 40px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel-strong);
  color: var(--ink);
  text-align: left;
  box-shadow: 0 10px 30px rgba(44, 90, 72, 0.075);
}

.technique-card::before {
  content: "";
  position: absolute;
  top: 17px;
  bottom: 17px;
  left: 18px;
  width: 5px;
  border-radius: 999px;
  background: var(--technique-color, var(--accent));
}

.technique-card-copy {
  display: block;
  min-width: 0;
}

.technique-card h3 {
  margin: 0 0 6px;
  font-size: 1.16rem;
  line-height: 1.14;
}

.technique-card p {
  margin-bottom: 10px;
  color: var(--muted);
  line-height: 1.35;
}

.technique-card .when {
  color: var(--ink);
  font-size: 0.92rem;
  line-height: 1.35;
}

.icon-button,
.ghost-button,
.back-button,
.secondary-action,
.primary-action,
.segmented button,
.rating-row button {
  min-height: var(--tap);
  border-radius: var(--radius);
}

.icon-button {
  width: var(--tap);
  border: 1px solid var(--line);
  background: var(--panel-strong);
  color: var(--ink);
  font-size: 1.28rem;
}

.back-button,
.ghost-button,
.secondary-action {
  border: 1px solid var(--line);
  background: var(--panel-strong);
  color: var(--ink);
}

.back-button {
  min-width: 126px;
  margin-bottom: 18px;
  padding: 0 15px;
  text-align: left;
}

.detail-card {
  padding: 24px;
}

.detail-purpose {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 1.08rem;
}

.why-card,
.rating-panel,
.history-block {
  padding: 18px;
  margin: 14px 0;
}

.why-card p:last-child {
  margin-bottom: 0;
}

.detail-route {
  color: var(--muted);
  font-style: italic;
}

.control-stack {
  display: grid;
  gap: 14px;
  margin-top: 18px;
}

fieldset {
  min-width: 0;
  margin: 0;
  padding: 0;
  border: 0;
}

legend {
  margin-bottom: 9px;
  color: var(--muted);
  font-size: 0.9rem;
}

.segmented {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
}

.segmented button {
  border: 1px solid var(--line);
  background: var(--panel-strong);
  color: var(--ink);
}

.segmented button.active {
  border-color: color-mix(in srgb, var(--accent), white 24%);
  background: color-mix(in srgb, var(--accent), white 82%);
  color: var(--ink);
}

.primary-action {
  width: 100%;
  padding: 0 20px;
  background: var(--ink);
  color: white;
  font-weight: 800;
}

.home-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 16px;
}

.secondary-action {
  display: grid;
  place-items: center;
  padding: 0 14px;
  text-align: center;
  text-decoration: none;
}

.file-action input,
#importFile {
  display: none;
}

.session-screen.active {
  display: grid;
  min-height: calc(100dvh - 44px - env(safe-area-inset-top) - env(safe-area-inset-bottom));
  grid-template-rows: auto minmax(280px, 1fr) auto auto;
  gap: 18px;
}

.session-screen {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.54), transparent 40%),
    linear-gradient(160deg, #f8fcf9, #edf8f6 58%, #f4fafc);
}

.session-top {
  min-height: 54px;
}

.ghost-button {
  min-width: 86px;
  padding: 0 16px;
}

.session-metrics {
  display: grid;
  justify-items: end;
  gap: 4px;
  color: var(--muted);
}

.session-metrics span:first-child {
  color: var(--ink);
  font-size: 1.35rem;
  font-weight: 800;
}

.pacer-wrap {
  position: relative;
  display: grid;
  place-items: center;
  min-height: min(72vw, 410px);
}

.pacer {
  --scale: 0.58;
  --phase-color: var(--accent);
  display: grid;
  place-items: center;
  width: min(74vw, 380px);
  aspect-ratio: 1;
  border: 1px solid color-mix(in srgb, var(--phase-color), transparent 52%);
  border-radius: 50%;
  background:
    radial-gradient(circle, color-mix(in srgb, var(--phase-color), white 58%) 0 25%, transparent 27%),
    radial-gradient(circle, transparent 0 56%, color-mix(in srgb, var(--phase-color), white 18%) 57% 59%, transparent 60%);
  filter: drop-shadow(0 18px 40px color-mix(in srgb, var(--phase-color), transparent 80%));
  transform: scale(var(--scale));
  transition: background 360ms ease, border-color 360ms ease, filter 360ms ease;
  will-change: transform;
}

.pacer-core {
  width: 38%;
  aspect-ratio: 1;
  border-radius: 50%;
  background: color-mix(in srgb, var(--phase-color), white 58%);
  opacity: 0.94;
}

.cue-panel {
  text-align: center;
}

.cue-panel p {
  margin-bottom: 4px;
  color: var(--muted);
}

#cueText {
  margin-bottom: 0;
  color: var(--phase-color, var(--ink));
}

#phaseCountdown {
  margin: 10px 0 0;
  color: var(--ink);
  font-size: 2.2rem;
  font-weight: 800;
}

.route-cue {
  min-height: 1.2rem;
  margin: 8px 0 0;
  color: color-mix(in srgb, var(--ink), transparent 32%);
  font-size: 0.78rem;
  font-style: italic;
  letter-spacing: 0.08em;
  text-transform: lowercase;
}

.route-cue:empty {
  visibility: hidden;
}

.sticky-action {
  align-self: end;
}

.progress-line {
  display: none;
  width: min(78vw, 420px);
  height: 10px;
  overflow: hidden;
  border-radius: 999px;
  background: var(--panel-strong);
}

.progress-line span {
  display: block;
  width: var(--progress, 0%);
  height: 100%;
  background: var(--phase-color, var(--accent));
}

.completion-mark {
  width: 118px;
  aspect-ratio: 1;
  margin: 44px auto 22px;
  border-radius: 50%;
  background:
    radial-gradient(circle, var(--accent-warm) 0 24%, transparent 25%),
    radial-gradient(circle, transparent 0 58%, var(--accent) 59% 63%, transparent 64%);
}

.rating-row {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 8px;
}

.rating-row button {
  border: 1px solid var(--line);
  background: var(--panel-strong);
  color: var(--ink);
  font-weight: 800;
}

.rating-row button.active {
  border-color: var(--accent);
  background: color-mix(in srgb, var(--accent), white 82%);
}

.settings-list {
  display: grid;
  gap: 10px;
  margin: 18px 0;
}

.setting-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  min-height: 62px;
  padding: 0 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel-strong);
}

.setting-row input[type="checkbox"] {
  width: 24px;
  height: 24px;
  accent-color: var(--accent);
}

.setting-row select {
  min-height: 42px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel-strong);
  color: var(--ink);
}

.history-block ol {
  display: grid;
  gap: 10px;
  margin: 0;
  padding-left: 20px;
  color: var(--muted);
}

.history-block li::marker {
  color: var(--accent);
}

@keyframes lift {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes breatheMini {
  0%,
  100% {
    transform: scale(0.72);
  }
  50% {
    transform: scale(1);
  }
}

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

  .pacer {
    display: none;
  }

  .progress-line {
    display: block;
  }
}

@media (min-width: 720px) {
  .app-shell {
    padding-top: 34px;
  }

  .technique-list {
    grid-template-columns: 1fr 1fr;
  }
}