/* ==========================================================================
   TYPE LABS · DESIGN SYSTEM  —  "Void"
   認知機能研究所 / Cognitive Function Research Institute
   Single source of truth. Do not redefine these values in page files.
   ========================================================================== */

:root {
  /* --- Ground --------------------------------------------------------- */
  --void:          #050611;
  --obsidian:      #0A0C1F;
  --midnight:      #0F1B3D;
  --midnight-soft: #1A2854;

  /* --- Gold ----------------------------------------------------------- */
  --gold:          #C9A961;
  --gold-bright:   #E5CD86;
  --gold-deep:     #8A7236;

  /* --- Ivory ---------------------------------------------------------- */
  --ivory:         #E8E0C8;
  --ivory-ghost:   rgba(232, 224, 200, 0.60);
  --ivory-faint:   rgba(232, 224, 200, 0.30);

  /* --- Surfaces ------------------------------------------------------- */
  --glass:         rgba(201, 169, 97, 0.05);
  --glass-strong:  rgba(201, 169, 97, 0.15);
  --panel:         rgba(10, 12, 31, 0.55);
  --panel-solid:   rgba(10, 12, 31, 0.85);

  /* --- Semantic ------------------------------------------------------- */
  --green:         #6BAE75;
  --amber:         #E5A437;
  --friction:      #D97A5E;
  --complement:    #7DDFFF;

  /* --- Instrument rings (compass) ------------------------------------- */
  --ring-western:  #7BE8A8;
  --ring-earth:    #F07B7B;
  --ring-pyear:    #FFD464;
  --ring-destiny:  #6ABDEE;
  --ring-soul:     #E87BC0;
  --ring-birth:    #B680FF;
  --ring-lifepath: #7DDFFF;
  --ring-core:     #FFBC5C;

  /* --- Planets (natal) ------------------------------------------------ */
  --p-sun:     #FFD56A;
  --p-moon:    #B9D2EC;
  --p-mercury: #9B7FC9;
  --p-venus:   #E87BC0;
  --p-mars:    #D97A5E;
  --p-jupiter: #F5B365;
  --p-saturn:  #6F996F;
  --p-uranus:  #7DDFFF;
  --p-neptune: #6ABDEE;
  --p-pluto:   #C97F7F;
  --p-asc:     #FFBC5C;
  --p-mc:      #FFD464;

  /* --- Type ----------------------------------------------------------- */
  --display:  'Cinzel', Georgia, serif;
  --display-d:'Cinzel Decorative', Georgia, serif;
  --serif:    'Cormorant Garamond', Georgia, serif;
  --jp:       'Noto Serif JP', serif;

  /* --- Rhythm --------------------------------------------------------- */
  --maxw:      72rem;
  --maxw-read: 48rem;
  --maxw-tool: 56rem;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
/* the nav is sticky — keep anchor targets clear of it */
section[id], [id] { scroll-margin-top: 92px; }
@media (max-width: 900px) { section[id], [id] { scroll-margin-top: 120px; } }

body {
  font-family: var(--serif);
  background: var(--void);
  color: var(--ivory);
  font-size: 18px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  min-height: 100vh;
}
body.lang-ja { font-family: var(--jp); line-height: 1.9; }

::selection { background: var(--gold); color: var(--void); }
a { color: inherit; text-decoration: none; transition: color .3s ease, opacity .3s ease; }
img { max-width: 100%; display: block; }
button { font: inherit; cursor: pointer; border: none; background: none; color: inherit; }
input, select { font: inherit; color-scheme: dark; }

/* ==========================================================================
   BACKDROP — starfield + atmosphere. Global; instruments inherit it.
   ========================================================================== */
body::before {
  content: '';
  position: fixed; inset: 0; z-index: -2; pointer-events: none;
  background:
    radial-gradient(2px 2px at 20% 30%, rgba(201,169,97,0.40), transparent 2px),
    radial-gradient(1px 1px at 60% 70%, rgba(201,169,97,0.50), transparent 1px),
    radial-gradient(1.5px 1.5px at 40% 50%, rgba(232,224,200,0.30), transparent 2px),
    radial-gradient(1px 1px at 85% 20%, rgba(201,169,97,0.40), transparent 1px),
    radial-gradient(2px 2px at 15% 85%, rgba(232,224,200,0.30), transparent 2px),
    radial-gradient(1px 1px at 75% 40%, rgba(201,169,97,0.30), transparent 1px),
    radial-gradient(1.5px 1.5px at 50% 10%, rgba(232,224,200,0.40), transparent 2px),
    radial-gradient(1px 1px at 90% 60%, rgba(201,169,97,0.30), transparent 1px),
    radial-gradient(1px 1px at 32% 62%, rgba(232,224,200,0.25), transparent 1px),
    radial-gradient(1px 1px at 68% 88%, rgba(201,169,97,0.28), transparent 1px),
    radial-gradient(ellipse at top, var(--midnight) 0%, var(--obsidian) 50%, var(--void) 100%);
  background-size:
    100vw 100vh, 100vw 100vh, 100vw 100vh, 100vw 100vh, 100vw 100vh,
    100vw 100vh, 100vw 100vh, 100vw 100vh, 100vw 100vh, 100vw 100vh, cover;
}
body::after {
  content: '';
  position: fixed; inset: 0; z-index: -1; pointer-events: none;
  background: radial-gradient(ellipse 60% 50% at 50% 40%, rgba(201,169,97,0.07) 0%, transparent 60%);
}

/* ==========================================================================
   NAV
   ========================================================================== */
.nav {
  position: sticky; top: 0; z-index: 100;
  padding: 1.25rem 3rem;
  display: flex; justify-content: space-between; align-items: center; gap: 1rem;
  background: rgba(5, 6, 17, 0.72);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--glass);
}
.nav-brand {
  font-family: var(--display);
  font-size: 1rem; letter-spacing: .35em; color: var(--gold); font-weight: 500;
  white-space: nowrap;
}
.nav-brand span { color: var(--ivory); margin: 0 .4rem; }
.nav-brand { display: flex; align-items: center; gap: .6rem; }
.nav-brand img { width: 26px; height: 26px; filter: drop-shadow(0 0 8px rgba(201,169,97,.45)); }
@media (max-width: 900px) { .nav-brand img { width: 21px; height: 21px; } }
.nav-links { display: flex; gap: 2.25rem; list-style: none; align-items: center; }
.nav-links a {
  font-family: var(--display);
  font-size: .6875rem; letter-spacing: .3em; color: var(--ivory-ghost); text-transform: uppercase;
}
body.lang-ja .nav-links a { font-family: var(--jp); letter-spacing: .18em; text-transform: none; font-size: .75rem; }
.nav-links a:hover { color: var(--gold-bright); text-shadow: 0 0 20px rgba(201,169,97,.4); }
.nav-links a.active { color: var(--gold); }

/* Language toggle */
.lang-toggle {
  display: flex; gap: 2px; align-items: center;
  border: 1px solid var(--glass-strong); border-radius: 100px; padding: 3px;
}
.lang-btn {
  font-family: var(--display);
  font-size: .625rem; letter-spacing: .18em;
  padding: 5px 12px; border-radius: 100px;
  color: var(--ivory-faint); transition: all .3s ease;
}
.lang-btn.active { background: var(--glass-strong); color: var(--gold-bright); }
.lang-btn:hover:not(.active) { color: var(--gold); }

/* ==========================================================================
   PAGE CHROME
   ========================================================================== */
.container { max-width: var(--maxw); margin: 0 auto; padding: 0 2rem; position: relative; z-index: 2; }
.container-read { max-width: var(--maxw-read); margin: 0 auto; padding: 0 2rem; position: relative; z-index: 2; }
.container-tool { max-width: var(--maxw-tool); margin: 0 auto; padding: 0 2rem; position: relative; z-index: 2; }

.page-head { text-align: center; padding: 5rem 2rem 3.5rem; }
.seal { font-size: 1.25rem; color: var(--gold); margin-bottom: 1rem; }
.eyebrow {
  font-family: var(--display);
  font-size: .6875rem; letter-spacing: .5em; color: var(--gold); text-transform: uppercase;
}
body.lang-ja .eyebrow { font-family: var(--jp); letter-spacing: .32em; text-transform: none; }
.stamp-jp {
  font-family: var(--jp);
  font-size: .6875rem; letter-spacing: .5em; color: var(--gold-deep); margin-top: .75rem;
}
h1, .page-title {
  font-family: var(--display);
  font-size: clamp(2.25rem, 5vw, 3.75rem);
  font-weight: 400; letter-spacing: .05em; color: var(--ivory);
  line-height: 1.12; margin: 1.5rem 0 1rem;
}
body.lang-ja h1, body.lang-ja .page-title { font-family: var(--jp); font-weight: 500; letter-spacing: .06em; }
h1 em, .page-title em {
  font-family: var(--serif); font-style: italic; font-weight: 300;
  color: var(--gold-bright); letter-spacing: 0;
}
body.lang-ja h1 em, body.lang-ja .page-title em { font-family: var(--jp); font-style: normal; }
.deck {
  font-family: var(--serif); font-style: italic; font-size: 1.1875rem;
  color: var(--ivory-ghost); max-width: 36rem; margin: 0 auto; line-height: 1.5; font-weight: 300;
}
body.lang-ja .deck { font-family: var(--jp); font-style: normal; font-size: 1rem; line-height: 1.85; }

.rule { width: 80px; height: 1px; background: var(--gold); margin: 2rem auto; opacity: .6; }

/* ==========================================================================
   PANELS / CARDS
   ========================================================================== */
.panel {
  background: var(--panel);
  border: 1px solid var(--glass-strong);
  backdrop-filter: blur(20px);
  padding: 2rem 1.75rem;
  position: relative;
}
.panel-framed::before {
  content: ''; position: absolute; inset: 12px;
  border: 1px solid var(--gold); opacity: .3; pointer-events: none;
}
.panel-ornament {
  position: absolute; top: -12px; left: 50%; transform: translateX(-50%);
  background: var(--void); padding: 0 1rem; color: var(--gold); font-size: 1.125rem;
}

/* ==========================================================================
   FORM CONTROLS
   ========================================================================== */
.field { display: flex; flex-direction: column; gap: .5rem; }
.field-label {
  font-family: var(--display);
  font-size: .625rem; letter-spacing: .3em; color: var(--gold); text-transform: uppercase;
}
body.lang-ja .field-label { font-family: var(--jp); letter-spacing: .16em; text-transform: none; font-size: .7rem; }
.field-label .opt { color: var(--ivory-faint); letter-spacing: .12em; margin-left: .4rem; }

.field-input, .field-select {
  width: 100%;
  background: transparent;
  border: none; border-bottom: 1px solid rgba(201,169,97,.38);
  padding: .7rem 0;
  font-family: var(--serif); font-size: 1.0625rem; font-style: italic;
  color: var(--ivory); outline: none;
  transition: border-color .3s ease;
}
body.lang-ja .field-input, body.lang-ja .field-select { font-family: var(--jp); font-style: normal; }
.field-input:focus, .field-select:focus { border-bottom-color: var(--gold-bright); }
.field-input::placeholder { color: var(--ivory-faint); }
.field-select {
  -webkit-appearance: none; appearance: none; cursor: pointer;
  background-image: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath fill='%23C9A961' d='M0 0l5 6 5-6z'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right .25rem center; padding-right: 1.5rem;
}
.field-select option { background: var(--obsidian); color: var(--ivory); font-style: normal; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .6rem;
  font-family: var(--display);
  font-size: .6875rem; letter-spacing: .32em; text-transform: uppercase;
  padding: .95rem 2.1rem;
  border: 1px solid var(--gold); color: var(--gold);
  background: rgba(201,169,97,.03);
  transition: all .4s ease;
}
body.lang-ja .btn { font-family: var(--jp); letter-spacing: .18em; text-transform: none; font-size: .8rem; }
.btn:hover { background: var(--gold); color: var(--void); letter-spacing: .4em; box-shadow: 0 0 40px rgba(201,169,97,.28); }
body.lang-ja .btn:hover { letter-spacing: .22em; }
.btn-primary { background: var(--gold); color: var(--void); }
.btn-primary:hover { background: var(--gold-bright); color: var(--void); }
.btn-ghost { border-color: var(--glass-strong); color: var(--ivory-ghost); }
.btn-ghost:hover { background: transparent; color: var(--gold-bright); border-color: var(--gold); box-shadow: none; }

/* ==========================================================================
   RESULT PANELS (shared by every instrument)
   ========================================================================== */
.result-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 12px; margin-top: 2rem;
}
.result {
  background: var(--panel); border: 1px solid var(--glass-strong);
  padding: 14px 16px; position: relative; overflow: hidden; backdrop-filter: blur(10px);
}
.result::before { content: ''; position: absolute; top: 0; left: 0; width: 3px; height: 100%; background: var(--gold); }
.result.r-lifepath::before { background: var(--ring-lifepath); }
.result.r-destiny::before  { background: var(--ring-destiny); }
.result.r-soul::before     { background: var(--ring-soul); }
.result.r-pyear::before    { background: var(--ring-pyear); }
.result.r-birth::before    { background: var(--ring-birth); }
.result.r-earth::before    { background: var(--ring-earth); }
.result.r-western::before  { background: var(--ring-western); }
.result.r-core::before     { background: var(--ring-core); }

.result-label {
  font-family: var(--display);
  font-size: .6rem; letter-spacing: .26em; text-transform: uppercase;
  color: rgba(201,169,97,.75); margin-bottom: 6px;
}
body.lang-ja .result-label { font-family: var(--jp); letter-spacing: .14em; text-transform: none; font-size: .68rem; }
.result-value { font-family: var(--display-d); font-size: 1.125rem; color: var(--gold-bright); }
body.lang-ja .result-value { font-family: var(--jp); font-size: 1.05rem; }
.result-detail {
  font-family: var(--serif); font-style: italic; font-size: .875rem;
  color: var(--ivory-ghost); margin-top: 4px; line-height: 1.45;
}
body.lang-ja .result-detail { font-family: var(--jp); font-style: normal; font-size: .82rem; line-height: 1.7; }

/* Note / confidence block */
.note {
  margin: 2rem auto 0; max-width: var(--maxw-tool);
  padding: 1.25rem 1.5rem;
  background: rgba(15, 27, 61, .38);
  border-left: 2px solid var(--gold);
  font-family: var(--serif); font-style: italic; font-size: .9375rem;
  color: var(--ivory-ghost); line-height: 1.7;
}
body.lang-ja .note { font-family: var(--jp); font-style: normal; font-size: .875rem; line-height: 1.95; }
.note strong {
  display: block; margin-bottom: .5rem;
  font-family: var(--display); font-style: normal;
  font-size: .625rem; letter-spacing: .35em; text-transform: uppercase; color: var(--gold);
}
body.lang-ja .note strong { font-family: var(--jp); letter-spacing: .18em; text-transform: none; font-size: .72rem; }

/* ==========================================================================
   INSTRUMENT INDEX CARDS
   ========================================================================== */
.instrument-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 2px; background: var(--glass-strong); border: 1px solid var(--glass-strong);
}
.instrument {
  background: var(--obsidian); padding: 2.5rem 2rem;
  position: relative; overflow: hidden; transition: background .5s ease;
  display: flex; flex-direction: column;
}
.instrument::before {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(circle at center, rgba(201,169,97,.08) 0%, transparent 70%);
  opacity: 0; transition: opacity .5s ease;
}
.instrument:hover::before { opacity: 1; }
.instrument-num {
  font-family: var(--display);
  font-size: .625rem; letter-spacing: .45em; color: var(--gold); margin-bottom: 1.5rem;
}
.instrument-name {
  font-family: var(--display);
  font-size: 1.5rem; letter-spacing: .05em; color: var(--ivory); font-weight: 500; margin-bottom: .25rem;
}
body.lang-ja .instrument-name { font-family: var(--jp); font-size: 1.3rem; }
.instrument-jp {
  font-family: var(--jp); font-size: .8125rem; color: var(--gold);
  letter-spacing: .35em; opacity: .8; margin-bottom: 1.25rem; display: block;
}
.instrument-body {
  font-family: var(--serif); font-style: italic; font-size: 1rem;
  color: var(--ivory-ghost); line-height: 1.6; font-weight: 300; flex: 1;
}
body.lang-ja .instrument-body { font-family: var(--jp); font-style: normal; font-size: .9rem; line-height: 1.85; }
.instrument-cta {
  margin-top: 1.75rem; padding-top: 1rem; border-top: 1px solid var(--glass-strong);
  font-family: var(--display); font-size: .625rem; letter-spacing: .3em;
  color: var(--gold); text-transform: uppercase;
}
body.lang-ja .instrument-cta { font-family: var(--jp); letter-spacing: .16em; text-transform: none; font-size: .72rem; }
.instrument:hover .instrument-cta { color: var(--gold-bright); }

/* ==========================================================================
   LEGAL / PROSE PAGES  —  特商法, 利用規約, プライバシー, /thanks
   ========================================================================== */
.legal { max-width: 46rem; margin: 0 auto; }

/* Definition table (特商法) */
.legal-row {
  display: grid; grid-template-columns: 13rem 1fr; gap: .5rem 2rem;
  padding: 1.35rem 0; border-bottom: 1px solid var(--glass-strong);
  align-items: start;
}
.legal-row:first-of-type { border-top: 1px solid var(--glass-strong); }
.legal-key {
  font-family: var(--display); font-size: .6875rem; letter-spacing: .2em;
  color: var(--gold); text-transform: uppercase; padding-top: .28rem;
}
body.lang-ja .legal-key {
  font-family: var(--jp); letter-spacing: .1em; text-transform: none; font-size: .82rem;
}
.legal-val {
  font-family: var(--serif); font-size: 1.0625rem; color: var(--ivory);
  line-height: 1.65; font-weight: 300;
}
body.lang-ja .legal-val { font-family: var(--jp); font-size: .94rem; line-height: 1.95; }
.legal-val p + p { margin-top: .6rem; }
.legal-val small { display: block; margin-top: .5rem; color: var(--ivory-ghost); font-size: .84em; }
.legal-val a { color: var(--gold); border-bottom: 1px solid rgba(201,169,97,.35); }
.legal-val a:hover { color: var(--gold-bright); }
.legal-val ul { margin: .5rem 0 0; padding-left: 1.2rem; }
.legal-val li { margin-bottom: .35rem; }

/* Prose (利用規約, プライバシー) */
.legal-body { font-family: var(--serif); font-size: 1.0625rem; color: var(--ivory-ghost); line-height: 1.75; font-weight: 300; }
body.lang-ja .legal-body { font-family: var(--jp); font-size: .94rem; line-height: 2; }
.legal-body h2 {
  font-family: var(--display); font-size: 1.0625rem; font-weight: 500; letter-spacing: .06em;
  color: var(--ivory); margin: 3rem 0 .9rem; padding-bottom: .6rem;
  border-bottom: 1px solid var(--glass-strong);
}
body.lang-ja .legal-body h2 { font-family: var(--jp); font-size: 1rem; }
.legal-body h2:first-child { margin-top: 0; }
.legal-body h2 .n { color: var(--gold); margin-right: .6rem; font-family: var(--display); }
.legal-body p { margin-bottom: 1rem; }
.legal-body ul, .legal-body ol { margin: 0 0 1rem 1.3rem; }
.legal-body li { margin-bottom: .45rem; }
.legal-body strong { color: var(--ivory); font-weight: 500; }
.legal-body a { color: var(--gold); border-bottom: 1px solid rgba(201,169,97,.35); }

.legal-updated {
  margin-top: 3.5rem; padding-top: 1.5rem; border-top: 1px solid var(--glass-strong);
  font-family: var(--display); font-size: .625rem; letter-spacing: .25em;
  color: var(--gold-deep); text-transform: uppercase; text-align: center;
}
body.lang-ja .legal-updated { font-family: var(--jp); letter-spacing: .12em; text-transform: none; font-size: .74rem; }

@media (max-width: 700px) {
  .legal-row { grid-template-columns: 1fr; gap: .35rem; padding: 1.1rem 0; }
  .legal-key { padding-top: 0; }
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.footer {
  margin-top: 6rem; padding: 4rem 2rem 2.5rem;
  border-top: 1px solid var(--glass-strong);
  text-align: center; position: relative; z-index: 2;
}
.footer-seal { font-size: 1.5rem; color: var(--gold); margin-bottom: 1.25rem; }
.footer-brand {
  font-family: var(--display); font-size: 1.5rem; letter-spacing: .35em;
  color: var(--ivory); margin-bottom: .5rem;
}
.footer-jp {
  font-family: var(--jp); font-size: .8125rem; letter-spacing: .55em;
  color: var(--gold); opacity: .8; display: block; margin-bottom: 1.75rem;
}
.footer-tag {
  font-family: var(--serif); font-style: italic; font-size: 1rem;
  color: var(--ivory-ghost); max-width: 30rem; margin: 0 auto 2.5rem; line-height: 1.5;
}
body.lang-ja .footer-tag { font-family: var(--jp); font-style: normal; font-size: .9rem; }
.footer-links {
  display: flex; justify-content: center; gap: 2.5rem; flex-wrap: wrap; margin-bottom: 2.5rem;
  font-family: var(--display); font-size: .625rem; letter-spacing: .3em;
  color: var(--ivory-ghost); text-transform: uppercase;
}
body.lang-ja .footer-links { font-family: var(--jp); letter-spacing: .16em; text-transform: none; font-size: .75rem; }
.footer-links a:hover { color: var(--gold); }
.footer-bottom {
  padding-top: 2rem; border-top: 1px solid var(--glass-strong);
  font-family: var(--display); font-size: .5625rem; letter-spacing: .3em;
  color: var(--gold-deep); text-transform: uppercase;
}

/* ==========================================================================
   UTILITIES
   ========================================================================== */
.hidden { display: none !important; }
.center { text-align: center; }
.fade-in { animation: fadeUp .8s ease both; }
@keyframes fadeUp { from { opacity: 0; transform: translateY(18px); } to { opacity: 1; transform: none; } }
@keyframes rotate { to { transform: rotate(360deg); } }
@keyframes pulseCore { 0%,100% { opacity: .7; } 50% { opacity: 1; } }
.pulse-core { animation: pulseCore 3s ease-in-out infinite; }

/* ==========================================================================
   RESPONSIVE
   ========================================================================== */
@media (max-width: 900px) {
  body { font-size: 17px; }
  .nav { padding: 1rem 1.25rem; flex-wrap: wrap; gap: .75rem; }
  .nav-brand { font-size: .8125rem; letter-spacing: .22em; }
  .nav-links { gap: 1.1rem; }
  .nav-links a { font-size: .5625rem; letter-spacing: .2em; }
  .container, .container-read, .container-tool { padding: 0 1.25rem; }
  .page-head { padding: 3rem 1.25rem 2.5rem; }
  .panel { padding: 1.75rem 1.25rem; }
  .footer-links { gap: 1.25rem; }
}