/* うつし — 墨・水面・余白。占いアプリの紫・金・星は使わない */

:root {
  --bg: #0e0f10;
  --bg-elevated: #16181a;
  --ink: #c8c4bb;
  --ink-dim: #7a766e;
  --ink-faint: #4a4843;
  --mist: rgba(200, 196, 187, 0.06);
  --line: rgba(200, 196, 187, 0.18);
  --line-strong: rgba(200, 196, 187, 0.45);
  --accent: #a89f8e;
  --ripple: rgba(180, 190, 200, 0.1);
  --font: "Hiragino Mincho ProN", "Hiragino Mincho Pro", "Yu Mincho", "YuMincho",
    "Noto Serif JP", "Source Han Serif JP", serif;
  --font-ui: "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Helvetica Neue",
    system-ui, sans-serif;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --ease-soft: cubic-bezier(0.33, 0.1, 0.25, 1);
  --space: clamp(1.25rem, 4vw, 2rem);
  --max: 28rem;
  --tap: 3.25rem;
}

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

html,
body {
  margin: 0;
  min-height: 100%;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body {
  min-height: 100dvh;
  overflow-x: hidden;
  background:
    radial-gradient(ellipse 120% 80% at 50% -20%, rgba(50, 52, 55, 0.5), transparent 55%),
    radial-gradient(ellipse 80% 50% at 80% 100%, rgba(30, 35, 40, 0.35), transparent 50%),
    var(--bg);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.04;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  z-index: 0;
}

#app {
  position: relative;
  z-index: 1;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: var(--space);
  padding-bottom: calc(var(--space) + env(safe-area-inset-bottom, 0));
}

.screen {
  display: none;
  width: 100%;
  max-width: var(--max);
  flex: 1;
  flex-direction: column;
  animation: fade-in 0.85s var(--ease-soft) both;
}

.screen.is-active {
  display: flex;
}

@keyframes fade-in {
  from {
    opacity: 0;
    transform: translateY(5px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes soft-in {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

/* —— 起動 —— */
.launch {
  justify-content: center;
  align-items: center;
  text-align: center;
  gap: 2.5rem;
}

.launch-actions {
  width: 100%;
  max-width: 16rem;
}

.brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
}

.brand-mark {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: 1px solid var(--line);
  position: relative;
  opacity: 0.85;
}

.brand-mark::after {
  content: "";
  position: absolute;
  inset: 12px;
  border-radius: 50%;
  border: 1px solid var(--line-strong);
  opacity: 0.5;
  animation: breath 5.5s var(--ease) infinite;
}

@keyframes breath {
  0%,
  100% {
    transform: scale(1);
    opacity: 0.35;
  }
  50% {
    transform: scale(1.08);
    opacity: 0.7;
  }
}

.brand h1 {
  margin: 0;
  font-size: 1.75rem;
  font-weight: 400;
  letter-spacing: 0.45em;
  text-indent: 0.45em;
}

.tagline {
  margin: 0;
  font-size: 0.9rem;
  color: var(--ink-dim);
  letter-spacing: 0.08em;
  font-family: var(--font-ui);
  font-weight: 300;
}

.principles {
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 0.8rem;
  color: var(--ink-faint);
  letter-spacing: 0.2em;
  font-family: var(--font-ui);
}

.principles li + li {
  margin-top: 0.35rem;
}

.launch-note {
  margin: 0;
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--ink-faint);
  font-family: var(--font-ui);
}

.breath-sub {
  margin: 0;
  font-size: 0.85rem;
  color: var(--ink-faint);
  letter-spacing: 0.06em;
  line-height: 1.8;
  max-width: 16rem;
}

.intake-progress {
  margin: 0 0 0.75rem;
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  color: var(--ink-faint);
  font-family: var(--font-ui);
}

.cast-sub {
  margin: -0.5rem 0 1rem;
  font-size: 0.8rem;
}

.yao-stack-six {
  min-height: 8.5rem;
  gap: 0.55rem;
}

.yao-stack-six .yao-line {
  width: min(180px, 56vw);
  height: 2px;
}

.yao-line.is-changing.yang::before,
.yao-line.is-changing.yin::before,
.yao-line.is-changing.yin::after {
  box-shadow: 0 0 10px rgba(200, 196, 187, 0.35);
}

.result-full {
  margin: 0;
  font-size: 0.78rem;
  letter-spacing: 0.2em;
  color: var(--ink-faint);
  opacity: 0;
  transition: opacity 1s var(--ease-soft);
}

.result-full.is-shown {
  opacity: 1;
}

.reading-blocks .reading-block p {
  white-space: pre-line;
}

/* 平易な見立て（上部） */
.reading-block.layer-plain h3 {
  letter-spacing: 0.22em;
  color: var(--accent);
  opacity: 0.9;
}

.reading-block.layer-plain p {
  font-size: 1.06rem;
  line-height: 1.9;
}

/* 深読み（下部・折りたたみ） */
.deep-reading {
  margin: 2.25rem 0 1rem;
  border-top: 1px solid color-mix(in srgb, var(--ink-faint) 35%, transparent);
  padding-top: 1.25rem;
  opacity: 0;
  transform: translateY(6px);
}

.deep-reading.is-shown {
  animation: reading-rise 1s var(--ease-soft) forwards;
}

.deep-summary {
  cursor: pointer;
  list-style: none;
  font-family: var(--font-ui);
  font-size: 0.72rem;
  letter-spacing: 0.28em;
  color: var(--ink-faint);
  padding: 0.65rem 0;
  user-select: none;
}

.deep-summary::-webkit-details-marker {
  display: none;
}

.deep-summary::before {
  content: '＋ ';
  letter-spacing: 0;
  opacity: 0.7;
}

.deep-reading[open] .deep-summary::before {
  content: '− ';
}

.deep-summary:hover {
  color: var(--ink);
}

.deep-meta {
  margin: 0 0 1.5rem;
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  color: var(--ink-faint);
  font-family: var(--font-ui);
  opacity: 0.85;
}

.deep-blocks .reading-block.layer-deep {
  opacity: 1;
  transform: none;
  animation: none;
}

.deep-blocks .reading-block.layer-deep h3 {
  color: var(--ink-faint);
}

.reading-block h3 {
  position: sticky;
  top: 0;
  background: linear-gradient(var(--bg) 70%, transparent);
  padding: 0.35rem 0;
  z-index: 1;
}

.result-screen {
  max-width: min(var(--max), 34rem);
}

.result-header {
  margin-bottom: 1.5rem;
}

.reading-block {
  margin-bottom: 2rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid rgba(200, 196, 187, 0.06);
}

.reading-block:last-child {
  border-bottom: none;
}

/* —— 間（breath） —— */
.breath {
  justify-content: center;
  align-items: center;
  text-align: center;
  gap: 3rem;
}

.breath-line {
  margin: 0;
  font-size: 1.05rem;
  letter-spacing: 0.14em;
  color: var(--ink-dim);
  line-height: 2;
  animation: soft-in 1.4s var(--ease-soft) both;
}

.breath-skip {
  opacity: 0;
  animation: soft-in 0.8s var(--ease) 1.2s both;
}

/* —— 共通 UI —— */
.prompt {
  margin: 0 0 1.25rem;
  font-size: 1.15rem;
  font-weight: 400;
  letter-spacing: 0.06em;
  line-height: 1.65;
}

.sub {
  margin: -0.5rem 0 1.5rem;
  font-size: 0.88rem;
  color: var(--ink-dim);
  font-family: var(--font);
  font-weight: 400;
  letter-spacing: 0.04em;
  line-height: 1.85;
}

.quiet-lead {
  margin-top: 0.25rem;
}

.spacer {
  flex: 1;
  min-height: 1.5rem;
}

.actions {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  padding-top: 1rem;
}

button {
  font-family: var(--font-ui);
  font-size: 0.92rem;
  letter-spacing: 0.12em;
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
  -webkit-tap-highlight-color: transparent;
}

.btn-primary {
  min-height: var(--tap);
  padding: 0.85rem 1.5rem;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  color: var(--ink);
  background: var(--mist);
  transition: background 0.25s var(--ease), border-color 0.25s var(--ease),
    transform 0.2s var(--ease);
}

.btn-primary:hover {
  background: rgba(200, 196, 187, 0.1);
}

.btn-primary:active {
  transform: scale(0.98);
}

.btn-primary:disabled {
  opacity: 0.35;
  cursor: default;
  transform: none;
}

.btn-ghost {
  min-height: 2.75rem;
  color: var(--ink-dim);
  letter-spacing: 0.14em;
  font-size: 0.82rem;
}

.btn-ghost:hover {
  color: var(--ink);
}

.btn-ghost.subtle {
  color: var(--ink-faint);
  font-size: 0.75rem;
  letter-spacing: 0.18em;
}

/* —— 問い —— */
.question-area {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-top: 0.5rem;
  animation: fade-in 0.5s var(--ease);
}

.question-area[hidden] {
  display: none !important;
}

#question-input {
  width: 100%;
  min-height: 7rem;
  padding: 1rem 1.1rem;
  border: 1px solid var(--line);
  border-radius: 2px;
  background: rgba(255, 255, 255, 0.015);
  color: var(--ink);
  font-family: var(--font);
  font-size: 1.05rem;
  line-height: 1.7;
  resize: vertical;
  outline: none;
  transition: border-color 0.3s var(--ease);
}

#question-input::placeholder {
  color: var(--ink-faint);
}

#question-input:focus {
  border-color: var(--line-strong);
}

/* 抑制文：システム枠ではなく本文 */
.suppress {
  display: none;
  margin: 0 0 1.75rem;
  padding: 0;
  border: none;
  background: none;
  color: var(--ink-dim);
  font-family: var(--font);
  font-size: 0.98rem;
  white-space: pre-line;
  line-height: 1.95;
  letter-spacing: 0.03em;
}

.suppress.is-visible {
  display: block;
  animation: fade-in 1s var(--ease-soft);
}

.hint-silent {
  font-size: 0.75rem;
  color: var(--ink-faint);
  font-family: var(--font-ui);
  letter-spacing: 0.04em;
}

/* —— 迷いの形 —— */
.form-list {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.form-list button {
  width: 100%;
  text-align: center;
  min-height: 3.4rem;
  padding: 0.95rem 1rem;
  border: 1px solid transparent;
  border-bottom: 1px solid var(--line);
  border-radius: 0;
  background: transparent;
  transition: background 0.3s var(--ease), border-color 0.3s var(--ease);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.15rem;
}

.form-list button:hover,
.form-list button:focus-visible {
  background: var(--mist);
  border-color: transparent;
  border-bottom-color: var(--line-strong);
  outline: none;
}

.form-list .label {
  font-family: var(--font);
  font-size: 1.08rem;
  letter-spacing: 0.18em;
  text-indent: 0.18em;
}

.form-list .hint {
  font-family: var(--font);
  font-size: 0.72rem;
  color: var(--ink-faint);
  letter-spacing: 0.06em;
  font-weight: 400;
  opacity: 0.85;
}

/* —— 兆し（接触） —— */
.casting {
  align-items: stretch;
}

.cast-status {
  text-align: center;
  margin-bottom: 1rem;
}

.cast-prompt {
  margin-bottom: 1rem;
  font-size: 1.05rem;
}

.cast-marks {
  display: flex;
  justify-content: center;
  gap: 0.85rem;
}

.cast-mark {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  border: 1px solid var(--line);
  opacity: 0.45;
  transition: background 0.5s var(--ease), opacity 0.5s var(--ease),
    border-color 0.5s var(--ease);
}

.cast-mark.is-done {
  background: var(--line-strong);
  border-color: var(--line-strong);
  opacity: 0.9;
}

.yao-stack {
  display: flex;
  flex-direction: column-reverse;
  gap: 0.9rem;
  align-items: center;
  margin: 1.25rem 0 1.5rem;
  min-height: 5.5rem;
}

.yao-line {
  width: min(200px, 62vw);
  height: 2px;
  position: relative;
  opacity: 0.12;
  transition: opacity 0.8s var(--ease);
}

.yao-line.is-set {
  opacity: 1;
}

.yao-line.yang::before {
  content: "";
  display: block;
  height: 100%;
  background: var(--line-strong);
  border-radius: 1px;
  filter: blur(0.3px);
  box-shadow: 0 0 8px rgba(200, 196, 187, 0.12);
  animation: line-ink 0.95s var(--ease-soft) both;
}

.yao-line.yin {
  display: flex;
  justify-content: space-between;
}

.yao-line.yin::before,
.yao-line.yin::after {
  content: "";
  width: 40%;
  height: 100%;
  background: var(--line-strong);
  border-radius: 1px;
  filter: blur(0.3px);
  box-shadow: 0 0 8px rgba(200, 196, 187, 0.1);
  animation: line-ink 0.95s var(--ease-soft) both;
}

@keyframes line-ink {
  from {
    transform: scaleX(0.15);
    opacity: 0;
    filter: blur(2px);
  }
  60% {
    opacity: 0.85;
    filter: blur(0.6px);
  }
  to {
    transform: scaleX(1);
    opacity: 1;
    filter: blur(0.3px);
  }
}

.touch-pad {
  position: relative;
  flex: 1;
  min-height: 240px;
  margin: 0.25rem 0 0.75rem;
  border: 1px solid var(--line);
  border-radius: 50%;
  aspect-ratio: 1;
  max-height: 300px;
  max-width: 300px;
  align-self: center;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  user-select: none;
  touch-action: none;
  cursor: pointer;
  transition: border-color 0.5s var(--ease), background 0.5s var(--ease),
    opacity 0.4s var(--ease), transform 0.4s var(--ease);
  overflow: hidden;
  background:
    radial-gradient(circle at 50% 45%, rgba(180, 190, 200, 0.04), transparent 55%);
}

.touch-pad .pad-glow {
  position: absolute;
  inset: 18%;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(200, 196, 187, 0.05), transparent 70%);
  opacity: 0.5;
  pointer-events: none;
  transition: opacity 0.5s, transform 1s var(--ease);
}

.touch-pad.is-holding {
  border-color: var(--line-strong);
  background: var(--ripple);
}

.touch-pad.is-holding .pad-glow {
  opacity: 1;
  transform: scale(1.08);
}

.touch-pad.is-resting {
  opacity: 0.55;
  pointer-events: none;
  transform: scale(0.985);
}

.touch-pad.is-done {
  pointer-events: none;
  opacity: 0.4;
}

.touch-pad-label {
  pointer-events: none;
  text-align: center;
  font-size: 0.88rem;
  color: var(--ink-dim);
  letter-spacing: 0.12em;
  font-family: var(--font);
  padding: 1.25rem;
  line-height: 1.9;
  transition: opacity 0.35s;
  z-index: 1;
}

.touch-pad.is-holding .touch-pad-label {
  opacity: 0.25;
}

.touch-pad .ripple-ring {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 36%;
  height: 36%;
  border: 1px solid var(--line);
  border-radius: 50%;
  transform: translate(-50%, -50%) scale(0.6);
  opacity: 0;
  pointer-events: none;
}

.touch-pad.is-holding .ripple-ring {
  animation: ripple 2s var(--ease) infinite;
}

.touch-pad.is-holding .ripple-ring.delay {
  animation-delay: 0.55s;
}

@keyframes ripple {
  0% {
    transform: translate(-50%, -50%) scale(0.45);
    opacity: 0.45;
  }
  100% {
    transform: translate(-50%, -50%) scale(2.4);
    opacity: 0;
  }
}

.cast-rest {
  text-align: center;
  min-height: 1.4rem;
  margin: 0;
  font-size: 0.78rem;
  color: var(--ink-faint);
  font-family: var(--font);
  letter-spacing: 0.16em;
}

/* —— 結果 —— */
.result-screen {
  align-items: stretch;
}

.result-header {
  text-align: center;
  margin-bottom: 2rem;
  padding-top: 1.5rem;
  min-height: 8rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1rem;
}

.result-yaos {
  display: flex;
  flex-direction: column-reverse;
  gap: 0.5rem;
  align-items: center;
  opacity: 0;
  transition: opacity 0.9s var(--ease-soft);
}

.result-yaos.is-shown {
  opacity: 0.75;
}

.result-yaos .yao-line {
  width: 64px;
  height: 2px;
  opacity: 1;
}

.result-name {
  margin: 0;
  font-size: 2.5rem;
  font-weight: 400;
  letter-spacing: 0.5em;
  text-indent: 0.5em;
  opacity: 0;
  transform: translateY(4px);
  transition: opacity 1.1s var(--ease-soft), transform 1.1s var(--ease-soft);
}

.result-name.is-shown {
  opacity: 1;
  transform: translateY(0);
}

.result-whisper {
  margin: 0;
  font-size: 0.78rem;
  color: var(--ink-faint);
  letter-spacing: 0.12em;
  font-family: var(--font);
  min-height: 1.2em;
  opacity: 0;
  transition: opacity 1s var(--ease-soft) 0.2s;
}

.result-whisper.is-shown {
  opacity: 1;
}

.reading-blocks {
  transition: opacity 0.3s;
}

.reading-blocks.is-hidden,
.result-footer.is-hidden {
  opacity: 0;
  pointer-events: none;
  visibility: hidden;
  max-height: 0;
  overflow: hidden;
  margin: 0;
  padding: 0;
}

.reading-blocks:not(.is-hidden) {
  opacity: 1;
  visibility: visible;
  max-height: none;
}

.reading-block {
  margin-bottom: 1.85rem;
  opacity: 0;
  transform: translateY(6px);
}

.reading-block.is-shown {
  animation: reading-rise 1s var(--ease-soft) forwards;
}

@keyframes reading-rise {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.reading-block h3 {
  margin: 0 0 0.55rem;
  font-size: 0.7rem;
  font-weight: 400;
  letter-spacing: 0.3em;
  color: var(--ink-faint);
  font-family: var(--font-ui);
}

.reading-block p {
  margin: 0;
  font-size: 1.02rem;
  line-height: 1.95;
  color: var(--ink);
}

.reading-block.toi p {
  color: var(--accent);
}

.result-space {
  flex: 1;
  min-height: 2.5rem;
}

.result-footer {
  margin-top: auto;
  padding-top: 1.5rem;
  text-align: center;
  transition: opacity 0.8s var(--ease);
}

.result-footer:not(.is-hidden) {
  opacity: 1;
  visibility: visible;
  max-height: none;
  pointer-events: auto;
}

.result-note {
  margin: 0 0 1.25rem;
  font-size: 0.72rem;
  color: var(--ink-faint);
  font-family: var(--font);
  letter-spacing: 0.06em;
}

/* デバッグ */
.debug-bar {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 50;
  padding: 0.4rem 0.75rem;
  background: #1a1c1e;
  border-top: 1px solid var(--line);
  font-family: ui-monospace, monospace;
  font-size: 0.65rem;
  color: var(--ink-dim);
  max-height: 4rem;
  overflow: auto;
}

body.debug .debug-bar {
  display: block;
}

body.debug #app {
  padding-bottom: 5rem;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .reading-block.is-shown {
    opacity: 1;
    transform: none;
  }
}