/* ============================================
   site.css — kagakawa.jp
   概念：空 ─ KŪ（白紙が輝くまで）
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Zen+Old+Mincho:wght@400;700&family=Shippori+Mincho+B1:wght@500;600;700&display=swap');

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body {
  background: var(--c-paper-1);
  color: var(--c-ink-3);
  font-family: var(--ff-mincho);
}

::selection {
  background: var(--c-stone-8);
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
}

button {
  font: inherit;
  color: inherit;
}

/* ── Progress hairline ───────────────────────── */

.progress-line {
  position: fixed;
  left: 0;
  top: 0;
  width: 1px;
  height: 100vh;
  background: linear-gradient(
    to bottom,
    var(--c-ink-3) var(--progress, 0%),
    transparent var(--progress, 0%)
  );
  pointer-events: none;
  z-index: 90;
  opacity: 0.35;
}

@supports (animation-timeline: scroll()) {
  @media (prefers-reduced-motion: no-preference) {
    .progress-line {
      animation: progressFill linear;
      animation-timeline: scroll(root);
    }
    @keyframes progressFill {
      from { --progress: 0%; }
      to   { --progress: 100%; }
    }
  }
}

@property --progress {
  syntax: '<percentage>';
  inherits: false;
  initial-value: 0%;
}

/* ── Hero ────────────────────────────────────── */

@keyframes bgReveal {
  0%   { background-color: var(--c-ink-0); }
  14%  { background-color: var(--c-ink-0); }
  42%  { background-color: var(--c-ink-1); }
  62%  { background-color: var(--c-stone-0); }
  85%  { background-color: var(--c-paper-1); }
  100% { background-color: var(--c-paper-1); }
}

@keyframes heroLine {
  0%   { opacity: 0; filter: blur(8px); transform: translateY(6px); color: var(--c-stone-9); }
  18%  { opacity: 1; filter: blur(0);    transform: translateY(0);   color: var(--c-stone-9); }
  56%  { opacity: 1; filter: blur(0);    transform: translateY(0);   color: var(--c-stone-9); }
  82%  { opacity: 1; filter: blur(0);    transform: translateY(0);   color: var(--c-ink-3); }
  100% { opacity: 1; filter: blur(0);    transform: translateY(0);   color: var(--c-ink-3); }
}

@keyframes strokeDraw {
  from { stroke-dashoffset: 120; }
  to   { stroke-dashoffset: 0; }
}

@keyframes scrollHint {
  0%, 100% { transform: translateY(0);   opacity: 0.6; }
  50%      { transform: translateY(6px); opacity: 0.3; }
}

.hero {
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 0 var(--w-pad);
  position: relative;
  background-color: var(--c-ink-0);
  animation: bgReveal 6.5s var(--ease-out-quint) forwards;
}

.hero-lines {
  font-family: var(--ff-mincho);
  font-size: clamp(22px, 5.6vw, 36px);
  font-weight: 400;
  line-height: 2.8;
  letter-spacing: 0.18em;
  text-align: center;
  font-feature-settings: "palt" 1;
}

.hero-lines p {
  display: block;
  opacity: 0;
  color: var(--c-ink-3);
  animation: heroLine 5.8s var(--ease-out-quint) forwards;
}

.hero-lines p:nth-child(1) { animation-delay: 0.5s; }
.hero-lines p:nth-child(2) { animation-delay: 1.1s; }
.hero-lines p:nth-child(3) { animation-delay: 1.7s; }

.hero-stroke {
  margin: 16px auto 0;
  display: block;
  opacity: 0;
  animation: heroStrokeAppear 0.8s ease 4.8s forwards;
}

@keyframes heroStrokeAppear {
  from { opacity: 0; }
  to   { opacity: 1; }
}

.hero-stroke line {
  stroke-dasharray: 120;
  stroke-dashoffset: 120;
  animation: strokeDraw 1s var(--ease-out-quart) 4.8s forwards;
}

#scroll-indicator {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  opacity: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

#scroll-indicator span {
  font-family: var(--ff-gothic);
  font-size: 10px;
  color: var(--c-stone-3);
  letter-spacing: 0.3em;
}

/* ── Prelude (name + tagline) ────────────────── */

.prelude {
  max-width: var(--w-col);
  margin: 0 auto;
  padding: var(--s-8) var(--w-pad) 0;
}

.name-block {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 1.2s ease, transform 1.2s ease;
}

.name-block.is-visible {
  opacity: 1;
  transform: none;
}

.name-block .name-romaji {
  font-family: var(--ff-mincho);
  font-size: 11px;
  color: var(--c-stone-3);
  letter-spacing: 0.22em;
  margin-bottom: 12px;
}

.name-block .name-jp {
  font-family: var(--ff-mincho);
  font-size: clamp(28px, 7vw, 44px);
  color: var(--c-ink-3);
  font-weight: 700;
  letter-spacing: 0.16em;
  line-height: 1.4;
  margin: 0;
}

.name-block .name-role {
  font-family: var(--ff-gothic);
  font-size: 12px;
  color: var(--c-stone-1);
  margin-top: 12px;
  letter-spacing: 0.06em;
}

.tagline {
  max-width: var(--w-col);
  margin: 0 auto;
  padding: 36px var(--w-pad) 0;
  opacity: 0;
  transition: opacity 1s ease 0.2s;
}

.tagline.is-visible {
  opacity: 1;
}

.tagline p {
  font-family: var(--ff-gothic);
  font-size: 13.5px;
  color: var(--c-ink-6);
  line-height: 2;
  letter-spacing: 0.04em;
}

/* ── Main column ─────────────────────────────── */

.main {
  max-width: var(--w-col);
  margin: 0 auto;
  padding: 20px var(--w-pad) 100px;
}

/* ── Zone label (kanji watermark) ────────────── */

.zone {
  position: relative;
  padding-top: 140px;
  opacity: 0;
  transition: opacity 1.4s var(--ease-out-quart);
}

.zone.is-visible {
  opacity: 1;
}

.zone-head {
  position: relative;
  margin-bottom: 8px;
}

.zone-head .zone-sub {
  font-family: var(--ff-mincho);
  font-size: 13px;
  color: var(--c-stone-6);
  letter-spacing: 0.28em;
  display: block;
}

.zone-head .zone-kanji {
  position: absolute;
  top: -40px;
  left: -8px;
  font-family: var(--ff-mincho-alt);
  font-weight: 600;
  font-size: clamp(88px, 22vw, 180px);
  color: var(--c-ink-3);
  letter-spacing: -0.05em;
  line-height: 1;
  opacity: 0.08;
  pointer-events: none;
  user-select: none;
  z-index: 0;
}

.zone-stroke {
  position: absolute;
  top: 80px;
  right: 0;
  width: 2px;
  height: 0;
  background: var(--c-stone-6);
  transition: height 1.2s var(--ease-out-quart);
}

.zone.is-visible .zone-stroke {
  height: 80px;
}

/* ── Fragments ───────────────────────────────── */

.fragment {
  opacity: 0;
  transform: translateY(20px);
  border-bottom: 1px solid var(--c-border-1);
  position: relative;
  z-index: 1;
}

.fragment.is-visible {
  opacity: 1;
  transform: none;
}

.fragment-toggle {
  background: none;
  border: none;
  cursor: pointer;
  padding: 24px 0;
  width: 100%;
  text-align: left;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  transition: transform 0.48s var(--ease-out-quart);
}

.fragment-toggle:hover {
  transform: translateX(6px);
}

.fragment-toggle:focus-visible {
  outline: 2px solid var(--c-ink-3);
  outline-offset: 4px;
}

.toggle-icon {
  flex-shrink: 0;
  width: 14px;
  height: 14px;
  position: relative;
  transition: transform 0.48s var(--ease-out-quart);
  margin-top: 8px;
}

.toggle-icon::before,
.toggle-icon::after {
  content: '';
  position: absolute;
  background: var(--c-stone-2);
  top: 50%;
  left: 50%;
}

.toggle-icon::before {
  width: 14px;
  height: 1px;
  transform: translate(-50%, -50%);
}

.toggle-icon::after {
  width: 1px;
  height: 14px;
  transform: translate(-50%, -50%);
  transition: transform 0.48s var(--ease-out-quart);
}

.fragment-toggle:hover .toggle-icon {
  transform: rotate(15deg);
}

.fragment-toggle.is-open .toggle-icon {
  transform: rotate(45deg);
}

.fragment-detail {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.52s var(--ease-out-quart);
}

.fragment-detail.is-open {
  grid-template-rows: 1fr;
}

.fragment-detail > div {
  overflow: hidden;
}

.frag-inner {
  padding: 0 0 28px 0;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.52s var(--ease-out-quart) 0.08s,
              transform 0.52s var(--ease-out-quart) 0.08s;
}

.fragment-detail.is-open .frag-inner {
  opacity: 1;
  transform: none;
}

.frag-text {
  font-family: var(--ff-mincho);
  font-size: clamp(17px, 4.4vw, 22px);
  color: var(--c-ink-3);
  line-height: 1.95;
  letter-spacing: 0.09em;
  font-feature-settings: "palt" 1;
}

.frag-sub {
  display: block;
  font-family: var(--ff-system);
  font-size: clamp(10px, 2.5vw, 12px);
  color: var(--c-stone-3);
  letter-spacing: 0.03em;
  margin-top: 4px;
  font-weight: 400;
  line-height: 1.4;
}

.frag-body {
  font-family: var(--ff-gothic);
  font-size: 13px;
  color: var(--c-ink-5);
  line-height: 2.05;
  letter-spacing: 0.02em;
  margin: 0;
  white-space: pre-line;
}

.frag-link {
  font-family: var(--ff-gothic);
  font-size: 11.5px;
  color: var(--c-stone-1);
  text-decoration: none;
  position: relative;
  padding-bottom: 3px;
}

.frag-link::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 1px;
  background: var(--c-border-3);
  transform: scaleX(1);
  transform-origin: right;
  transition: transform 0.38s var(--ease-out-quart);
}

.frag-link:hover::after {
  transform: scaleX(0);
  transform-origin: left;
}

.frag-link:hover {
  color: var(--c-ink-3);
}

.frag-links {
  margin-top: 14px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
}

/* ── Podcast cards ───────────────────────────── */

.pod-card {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: inherit;
  transition: opacity 0.25s ease;
}

.pod-card:hover {
  opacity: 0.72;
}

.pod-card img {
  width: 60px;
  height: 60px;
  border-radius: 4px;
  object-fit: cover;
  flex-shrink: 0;
}

.pod-card span {
  font-family: var(--ff-gothic);
  font-size: 12px;
  color: var(--c-ink-7);
  line-height: 1.65;
  white-space: pre-line;
}

.pod-list {
  margin-top: 18px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

/* ── Coaching CTA card (対話 cluster) ─────────── */

.cta-card {
  display: block;
  margin-top: 18px;
  padding: 20px 22px;
  border: 1px solid var(--c-border-1);
  border-radius: 2px;
  text-decoration: none;
  color: var(--c-ink-3);
  transition: border-color 0.3s ease, background 0.3s ease;
  background: transparent;
}

.cta-card:hover {
  border-color: var(--c-ink-3);
  background: var(--c-paper-2);
}

.cta-card .cta-title {
  display: block;
  font-family: var(--ff-mincho);
  font-size: 14px;
  letter-spacing: 0.08em;
  color: var(--c-ink-3);
  margin-bottom: 4px;
}

.cta-card .cta-sub {
  display: block;
  font-family: var(--ff-gothic);
  font-size: 11px;
  letter-spacing: 0.02em;
  color: var(--c-stone-1);
}

.cta-card .cta-arrow {
  font-family: var(--ff-mincho);
  font-size: 14px;
  margin-left: 6px;
  color: var(--c-stone-2);
  transition: transform 0.32s var(--ease-out-quart);
  display: inline-block;
}

.cta-card:hover .cta-arrow {
  transform: translateX(4px);
}

/* ── Breath (3 sections) ─────────────────────── */

.breath {
  min-height: min(78vh, 560px);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: var(--s-8) 0;
  text-align: center;
  opacity: 0;
  transition: opacity 1.8s ease;
}

.breath.is-visible {
  opacity: 1;
}

.breath-stroke {
  display: block;
  margin: 0 auto 36px;
  width: 56px;
  height: 1px;
  overflow: visible;
}

.breath-stroke line {
  stroke: var(--c-border-4);
  stroke-width: 1;
  stroke-dasharray: 28;
  stroke-dashoffset: 28;
  transition: stroke-dashoffset 1.8s var(--ease-out-quart);
}

.breath.is-visible .breath-stroke line {
  stroke-dashoffset: 0;
}

.breath p {
  font-family: var(--ff-mincho);
  font-size: clamp(16px, 4vw, 20px);
  color: var(--c-stone-1);
  letter-spacing: 0.02em;
  line-height: 2.4;
  font-style: italic;
  transition: letter-spacing 2.4s var(--ease-out-quart);
}

.breath.is-visible p {
  letter-spacing: 0.16em;
}

.breath p + p {
  margin-top: 6px;
  opacity: 0;
  transform: translateY(8px);
  transition:
    opacity 1.6s ease 1.2s,
    transform 1.6s ease 1.2s,
    letter-spacing 2.4s var(--ease-out-quart) 1.2s;
}

.breath.is-visible p + p {
  opacity: 1;
  transform: none;
}

/* ── Chapter heading (営み) ──────────────────── */

.chapter {
  position: relative;
  padding-top: 140px;
  margin-bottom: 48px;
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 1.2s var(--ease-out-quart), transform 1.2s var(--ease-out-quart);
}

.chapter.is-visible {
  opacity: 1;
  transform: none;
}

.chapter .chapter-sub {
  font-family: var(--ff-gothic);
  font-size: 11px;
  color: var(--c-stone-4);
  letter-spacing: 0.28em;
  display: block;
  margin-bottom: 8px;
}

.chapter .chapter-title {
  font-family: var(--ff-mincho);
  font-size: clamp(26px, 6.4vw, 36px);
  color: var(--c-ink-3);
  font-weight: 700;
  letter-spacing: 0.16em;
  margin: 0;
  line-height: 1.4;
}

/* ── Cluster (営み の 5 分類) ────────────────── */

.cluster {
  margin-top: 72px;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 1s var(--ease-out-quart), transform 1s var(--ease-out-quart);
}

.cluster.is-visible {
  opacity: 1;
  transform: none;
}

.cluster-head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 4px;
  padding: 0 0 8px;
  border-bottom: 1px solid var(--c-border-0);
}

.cluster-head .cluster-kanji {
  font-family: var(--ff-mincho-alt);
  font-weight: 600;
  font-size: 22px;
  color: var(--c-ink-3);
  letter-spacing: 0.1em;
  line-height: 1;
}

.cluster-head .cluster-en {
  font-family: var(--ff-gothic);
  font-size: 10px;
  color: var(--c-stone-4);
  letter-spacing: 0.32em;
  text-transform: uppercase;
}

/* ── Appendix (別記) ─────────────────────────── */

.appendix {
  max-width: var(--w-col);
  margin: 0 auto;
  padding: 0 var(--w-pad) 80px;
}

.appendix-label {
  font-family: var(--ff-mincho);
  font-size: 13px;
  color: var(--c-stone-6);
  letter-spacing: 0.24em;
  margin: 0;
  padding: 56px 0 16px;
}

.career-list {
  list-style: none;
  padding: 0;
  margin: 0 0 32px;
  font-family: var(--ff-gothic);
  font-size: 13px;
  color: var(--c-ink-6);
  line-height: 1.7;
}

.career-list li {
  display: grid;
  grid-template-columns: 96px 1fr;
  gap: 14px;
  padding: 11px 0;
  border-bottom: 1px solid var(--c-border-0);
}

.career-list li:last-child {
  border-bottom: none;
}

.career-list .career-year {
  font-size: 12px;
  color: var(--c-stone-4);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
}

.career-list .career-where {
  color: var(--c-ink-3);
}

.career-list .career-role {
  color: var(--c-ink-6);
}

.skills-label {
  font-family: var(--ff-mincho);
  font-size: 12px;
  color: var(--c-ink-6);
  letter-spacing: 0.18em;
  font-weight: normal;
  margin: 0 0 14px;
}

.skills-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 12px;
  font-family: var(--ff-gothic);
  font-size: 12px;
  color: var(--c-ink-6);
  line-height: 1.6;
}

.skills-list .skill-sep {
  color: var(--c-stone-6);
}

.strengths-list {
  list-style: none;
  padding: 0;
  margin: 0;
  font-family: var(--ff-gothic);
  font-size: 13px;
  color: var(--c-ink-6);
  line-height: 1.9;
}

.strengths-list li {
  margin-bottom: 20px;
}

.strengths-list .strength-name {
  color: var(--c-ink-3);
}

.strengths-list .strength-desc {
  display: block;
  font-size: 12px;
  color: var(--c-ink-6);
  margin-top: 2px;
}

/* ── Footer (縁) ─────────────────────────────── */

.footer {
  max-width: var(--w-col);
  margin: 0 auto;
  padding: 0 var(--w-pad) 120px;
}

.footer-intro {
  font-family: var(--ff-mincho);
  font-size: clamp(17px, 4vw, 22px);
  color: var(--c-ink-3);
  letter-spacing: 0.1em;
  line-height: 1.8;
  padding-top: 48px;
  margin-bottom: 48px;
}

.footer-group {
  margin-bottom: 32px;
}

.footer-group-label {
  font-family: var(--ff-mincho);
  font-size: 11px;
  color: var(--c-stone-4);
  letter-spacing: 0.28em;
  display: block;
  margin-bottom: 14px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
}

.footer-link {
  font-family: var(--ff-gothic);
  font-size: 13px;
  color: var(--c-ink-6);
  text-decoration: none;
  position: relative;
  padding-bottom: 3px;
}

.footer-link::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 1px;
  background: var(--c-border-3);
  transform: scaleX(1);
  transform-origin: right;
  transition: transform 0.38s var(--ease-out-quart);
}

.footer-link:hover::after {
  transform: scaleX(0);
  transform-origin: left;
}

.footer-link:hover {
  color: var(--c-ink-3);
}

.footer-sign {
  margin-top: 100px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 26px;
}

.footer-sign img.profile {
  width: 88px;
  height: 88px;
  border-radius: 50%;
  object-fit: cover;
  filter: grayscale(0.15);
}

.sign-row {
  display: flex;
  align-items: center;
  gap: 14px;
}

.sign-row .sign-romaji {
  font-family: var(--ff-mincho);
  font-size: 10px;
  color: var(--c-stone-6);
  letter-spacing: 0.18em;
  margin: 0;
}

.sign-row img.hanko {
  width: 44px;
  height: 44px;
  opacity: 0.88;
  filter: sepia(0.45) saturate(2.4) hue-rotate(-18deg) brightness(0.92);
}

.footer-foot {
  margin-top: 48px;
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--ff-mincho);
  font-size: 11px;
  letter-spacing: 0.22em;
}

.footer-foot a,
.footer-foot span {
  color: var(--c-stone-4);
  text-decoration: none;
  transition: color 0.3s ease;
}

.footer-foot a:hover {
  color: var(--c-ink-3);
}

.footer-foot .current {
  color: var(--c-ink-3);
}

.footer-foot .divider {
  color: var(--c-stone-7);
}

/* ── Scroll-linked luminance drift ───────────── */

@supports (animation-timeline: scroll()) {
  @media (prefers-reduced-motion: no-preference) {
    body {
      animation: bodyDrift linear;
      animation-timeline: scroll(root);
    }
    @keyframes bodyDrift {
      0%   { background-color: var(--c-paper-1); }
      25%  { background-color: var(--c-paper-1); }
      48%  { background-color: var(--c-paper-5); }
      52%  { background-color: var(--c-paper-5); }
      70%  { background-color: var(--c-paper-3); }
      92%  { background-color: var(--c-paper-0); }
      100% { background-color: var(--c-paper-0); }
    }
  }
}

/* ── Responsive: asymmetric ma (≥768px) ──────── */

@media (min-width: 768px) {
  .zone-head .zone-kanji {
    left: -88px;
  }
  .breath p {
    padding-left: 60px;
    padding-right: 0;
  }
  .zone-stroke {
    right: -40px;
  }
}

/* ── Reduced motion ──────────────────────────── */

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

  .hero {
    background-color: var(--c-paper-1);
  }

  .hero-lines p {
    opacity: 1;
    color: var(--c-ink-3);
    filter: none;
    transform: none;
  }

  .hero-stroke {
    opacity: 1;
  }

  .hero-stroke line {
    stroke-dashoffset: 0;
  }

  .zone,
  .zone.is-visible,
  .chapter,
  .chapter.is-visible,
  .cluster,
  .cluster.is-visible,
  .name-block,
  .tagline,
  .breath,
  .fragment,
  .zone-label {
    opacity: 1;
    transform: none;
  }

  .zone-stroke {
    height: 80px;
  }

  .breath-stroke line {
    stroke-dashoffset: 0;
  }

  .breath p {
    letter-spacing: 0.16em;
  }
}