/* ============================================================
   DESIGN TOKENS
   ============================================================ */
:root{
  /* History era — ink & washi paper */
  --ink:#15141f;
  --ink-2:#1f1d2e;
  --indigo:#272350;
  --washi:#f4ecda;
  --washi-2:#ece0c4;
  --shu:#c5402f;
  --shu-bright:#e8543d;
  --gold:#cc9a4f;
  --gold-soft:#e3c585;
  --matcha:#7c9468;

  /* Present era — neon tomorrow */
  --night:#0a0b14;
  --night-2:#11132a;
  --neon-pink:#ff5fa3;
  --neon-blue:#35d6ff;
  --neon-purple:#9b6bff;
  --neon-mint:#4dffc4;

  /* Hiragana / Katakana — candy spectrum */
  --hira-1:#ff6f9c; --hira-2:#ff9a5a; --hira-3:#ffd25a; --hira-4:#6fdc8c; --hira-5:#5ad1ff; --hira-6:#6f8cff; --hira-7:#c46fff; --hira-8:#ff6fd8; --hira-9:#ff8a6f; --hira-10:#9adb5a; --hira-11:#5affc7;

  --kata-1:#00e0c6; --kata-2:#00b8ff; --kata-3:#6a7bff; --kata-4:#c45cff; --kata-5:#ff4fd0; --kata-6:#ff5566; --kata-7:#ff9b2e; --kata-8:#ffd23f; --kata-9:#7bdc4d; --kata-10:#2effb0; --kata-11:#5ad1ff;

  --display:'Shippori Mincho', serif;
  --body:'Zen Maru Gothic', sans-serif;
  --kana-font:'Klee One', cursive;
  --mono:'JetBrains Mono', monospace;

  --maxw:1180px;
}

*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}
html,body{background:var(--ink);}

@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
  *{animation-duration:0.001ms !important; animation-iteration-count:1 !important; transition-duration:0.001ms !important;}
}

body{
  font-family:var(--body);
  color:var(--washi);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}

a{color:inherit;}
img{max-width:100%;display:block;}
:focus-visible{outline:3px solid var(--neon-mint); outline-offset:3px; border-radius:4px;}

h1,h2,h3,h4{font-family:var(--display); font-weight:700; line-height:1.18;}

.wrap{max-width:var(--maxw); margin:0 auto; padding:0 28px;}

/* ============================================================
   NAV
   ============================================================ */
#topnav{
  position:fixed; top:0; left:0; right:0; z-index:500;
  display:flex; align-items:center; justify-content:space-between;
  padding:14px 28px;
  background:rgba(10,9,18,0.62);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,0.08);
  transition:background .3s ease;
}
#topnav .brand{
  font-family:var(--kana-font); font-size:1.5rem; font-weight:600;
  display:flex; align-items:center; gap:10px; letter-spacing:0.02em;
  color:var(--washi); text-decoration:none;
}
#topnav .brand .dot{width:8px;height:8px;border-radius:50%;background:var(--shu-bright); box-shadow:0 0 12px var(--shu-bright);}
#topnav ul{list-style:none; display:flex; align-items:center; gap:4px; flex-wrap:wrap; justify-content:flex-end;}
#topnav a.navlink{
  font-family:var(--mono); font-size:0.72rem; letter-spacing:0.08em; text-transform:uppercase;
  padding:9px 14px; border-radius:99px; text-decoration:none; color:rgba(244,236,218,0.72);
  transition:all .25s ease; border:1px solid transparent; white-space:nowrap;
}
#topnav a.navlink:hover, #topnav a.navlink.active{
  color:var(--ink); background:var(--washi); border-color:var(--washi);
}
#navtoggle{display:none;}

@media (max-width:880px){
  #topnav ul{position:fixed; top:62px; right:0; left:0; flex-direction:column; justify-content:flex-start; background:var(--night-2); padding:14px; gap:6px; max-height:calc(100vh - 62px); overflow-y:auto; transform:translateY(-12px); opacity:0; visibility:hidden; pointer-events:none; transition:transform .25s ease, opacity .25s ease, visibility 0s linear .25s; border-bottom:1px solid rgba(255,255,255,0.1);}
  #topnav ul.open{transform:translateY(0); opacity:1; visibility:visible; pointer-events:auto; transition:transform .25s ease, opacity .25s ease, visibility 0s linear 0s;}
  #topnav a.navlink{text-align:center;}
  #navtoggle{display:flex; flex-direction:column; gap:5px; background:none; border:none; cursor:pointer; padding:8px; flex-shrink:0;}
  #navtoggle span{width:22px; height:2px; background:var(--washi); border-radius:2px;}
}
.nav-sep{display:none;}
@media (min-width:881px){
  .nav-sep{display:block; width:1px; height:22px; background:rgba(255,255,255,0.18); margin:0 4px;}
  #navtoggle{display:none !important;}
  #topnav ul{display:flex; align-items:center; gap:4px; flex-wrap:wrap; justify-content:flex-end; position:static; background:none; padding:0; opacity:1; visibility:visible; pointer-events:auto; transform:none; max-height:none; border:none;}
}
#navAuthSlot{display:flex; align-items:center; justify-content:center; gap:8px;}
.nav-home-link{opacity:0.9;}
.nav-signin-link{border-color:rgba(227,197,133,0.4) !important; color:var(--gold-soft) !important;}
.nav-signin-link:hover{background:var(--gold-soft) !important; color:var(--ink) !important;}
.nav-user-email{font-family:var(--mono); font-size:0.68rem; opacity:0.7; padding:0 6px; white-space:nowrap; overflow:hidden; text-overflow:ellipsis; max-width:140px;}
.nav-signout-btn{
  -webkit-appearance:none; appearance:none;
  background:none; cursor:pointer;
  font-family:var(--mono); font-size:0.72rem; letter-spacing:0.08em; text-transform:uppercase;
  padding:9px 14px; border-radius:99px;
  color:rgba(244,236,218,0.72); border:1px solid rgba(244,236,218,0.28);
  transition:all .25s ease; white-space:nowrap; line-height:1;
}
.nav-signout-btn:hover{background:rgba(244,236,218,0.1); border-color:var(--washi); color:var(--washi);}

/* Always-visible right slot (home + auth) */
.nav-right-slot{display:flex; align-items:center; gap:4px; flex-shrink:0; flex-wrap:nowrap;}
.nav-home-link{
  border:1px solid rgba(244,236,218,0.30) !important;
  background:rgba(196,64,47,0.12) !important;
}
.nav-home-link:hover{
  background:rgba(196,64,47,0.28) !important;
  border-color:var(--shu-bright) !important;
  color:var(--washi) !important;
}
@media (max-width:880px){
  .nav-home-label{display:inline;}  /* always show HOME text */
  .nav-user-email{display:none !important;}
  /* compact so 3 items fit on narrow bars */
  .nav-home-link,
  .nav-signout-btn,
  .navlink.nav-signin-link{
    font-size:0.6rem !important;
    padding:6px 10px !important;
    letter-spacing:0.04em !important;
  }
}
@media (max-width:400px){
  /* emoji-only for home on very tiny phones */
  .nav-home-label{display:none;}
  .nav-home-link{font-size:1.05rem !important; padding:4px 8px !important; border-radius:10px !important;}
}

/* ============================================================
   HERO
   ============================================================ */
#hero{
  min-height:100svh; position:relative; display:flex; flex-direction:column;
  align-items:center; justify-content:center; text-align:center;
  background:
    radial-gradient(circle at 20% 15%, rgba(196,64,47,0.18), transparent 45%),
    radial-gradient(circle at 80% 85%, rgba(124,148,104,0.16), transparent 50%),
    linear-gradient(180deg, var(--ink) 0%, var(--ink-2) 100%);
  padding:120px 24px 80px;
  overflow:hidden;
}
#hero::before{
  content:''; position:absolute; inset:0; opacity:0.05; pointer-events:none;
  background-image:
    repeating-linear-gradient(90deg, var(--washi) 0 1px, transparent 1px 90px),
    repeating-linear-gradient(0deg, var(--washi) 0 1px, transparent 1px 90px);
}
.hero-kanji-wrap{position:relative; margin-bottom:18px;}
.hero-kanji{
  font-family:var(--display); font-weight:800;
  font-size:clamp(5rem, 22vw, 13rem); line-height:0.9;
  color:var(--washi); position:relative; display:inline-block;
  -webkit-mask-image:linear-gradient(90deg,#000 0%,#000 0%);
  mask-image:linear-gradient(90deg,#000 0%,#000 0%);
  animation:brushReveal 2.6s cubic-bezier(.5,0,.15,1) 0.3s forwards;
  filter:drop-shadow(0 0 40px rgba(196,64,47,0.25));
}
@keyframes brushReveal{
  0%{-webkit-mask-image:linear-gradient(90deg,#000 0%,#000 0%);mask-image:linear-gradient(90deg,#000 0%,#000 0%);}
  100%{-webkit-mask-image:linear-gradient(90deg,#000 100%,#000 100%);mask-image:linear-gradient(90deg,#000 100%,#000 100%);}
}
.hero-kanji .stroke-accent{
  position:absolute; left:-6%; top:8%; width:112%; height:84%;
  border-bottom:5px solid var(--shu-bright); border-radius:50%;
  transform:scaleX(0); transform-origin:left center; opacity:0.55;
  animation:underbrush 1s ease 2.7s forwards;
}
@keyframes underbrush{to{transform:scaleX(1);}}
.hero-romaji{
  font-family:var(--mono); letter-spacing:0.35em; text-transform:uppercase;
  font-size:0.85rem; color:var(--gold-soft); opacity:0; animation:fadeUp .8s ease 3.1s forwards;
}
.hero-tagline{
  max-width:640px; margin:22px auto 0; font-size:clamp(1.05rem,2.4vw,1.35rem);
  color:rgba(244,236,218,0.82); opacity:0; animation:fadeUp .8s ease 3.4s forwards;
}
@keyframes fadeUp{from{opacity:0; transform:translateY(14px);} to{opacity:1; transform:translateY(0);}}
.hero-cta{
  display:flex; gap:14px; flex-wrap:wrap; justify-content:center; margin-top:36px;
  opacity:0; animation:fadeUp .8s ease 3.7s forwards;
}
.btn{
  font-family:var(--mono); font-size:0.78rem; letter-spacing:0.06em; text-transform:uppercase;
  padding:13px 26px; border-radius:99px; text-decoration:none; cursor:pointer; border:1.5px solid var(--washi);
  color:var(--washi); background:transparent; transition:all .25s ease; display:inline-flex; align-items:center; gap:8px;
}
.btn:hover{background:var(--washi); color:var(--ink); transform:translateY(-2px);}
.btn.filled{background:var(--shu-bright); border-color:var(--shu-bright); color:#fff;}
.btn.filled:hover{background:var(--shu); border-color:var(--shu); color:#fff;}

.scroll-cue{position:absolute; bottom:34px; left:50%; transform:translateX(-50%); opacity:0; animation:fadeUp .8s ease 4s forwards, bob 2.4s ease-in-out 4.8s infinite;}
.scroll-cue svg{width:22px;height:22px;stroke:var(--washi);opacity:.6;}
@keyframes bob{0%,100%{transform:translate(-50%,0);}50%{transform:translate(-50%,8px);}}

/* ============================================================
   SECTION SCAFFOLDING
   ============================================================ */
section{position:relative;}
.section-head{max-width:760px; margin:0 auto 56px; text-align:center; scroll-margin-top:150px;}
.eyebrow{
  font-family:var(--mono); font-size:0.72rem; letter-spacing:0.22em; text-transform:uppercase;
  color:var(--shu-bright); margin-bottom:14px; display:inline-block;
}
.section-head h2{font-size:clamp(2rem,5vw,3.1rem); margin-bottom:16px;}
.section-head p{font-size:1.08rem; opacity:0.82; max-width:620px; margin:0 auto;}

/* ---- History section theme (washi paper) ---- */
#history{
  background:
    radial-gradient(circle at 10% 0%, rgba(204,154,79,0.10), transparent 40%),
    var(--ink);
  padding:110px 0 90px;
  color:var(--washi);
}
#history .eyebrow{color:var(--gold-soft);}

.era-block{
  display:grid; grid-template-columns:160px 1fr; gap:36px;
  max-width:920px; margin:0 auto 64px; position:relative;
}
.era-block::before{
  content:''; position:absolute; left:159px; top:8px; bottom:-64px; width:1px;
  background:linear-gradient(180deg, var(--gold-soft), transparent);
}
.era-block:last-child::before{display:none;}
.era-marker{text-align:right; padding-top:4px;}
.era-marker .era-years{font-family:var(--mono); font-size:0.78rem; color:var(--gold-soft); letter-spacing:0.03em;}
.era-marker .era-dot{
  width:13px;height:13px;border-radius:50%; background:var(--shu-bright); margin-left:auto; margin-top:10px;
  box-shadow:0 0 0 4px rgba(196,64,47,0.18);
}
.era-content h3{font-size:1.55rem; margin-bottom:4px; color:var(--washi);}
.era-content .era-jp{font-family:var(--kana-font); color:var(--gold-soft); font-size:1.05rem; margin-bottom:14px; display:block;}
.era-content p{margin-bottom:14px; opacity:0.88; font-size:1rem;}
.era-content p:last-child{margin-bottom:0;}
.era-content strong{color:var(--gold-soft); font-weight:700;}

@media (max-width:720px){
  .era-block{grid-template-columns:1fr; gap:10px;}
  .era-block::before{left:6px; top:36px;}
  .era-marker{text-align:left; display:flex; align-items:center; gap:10px;}
  .era-marker .era-dot{margin:0;}
}

.culture-grid{
  display:grid; grid-template-columns:repeat(auto-fit,minmax(260px,1fr)); gap:22px;
  max-width:1040px; margin:70px auto 0;
}
.culture-card{
  background:linear-gradient(160deg, rgba(255,255,255,0.045), rgba(255,255,255,0.015));
  border:1px solid rgba(227,197,133,0.18); border-radius:18px; padding:28px 26px;
  transition:transform .3s ease, border-color .3s ease;
}
.culture-card:hover{transform:translateY(-4px); border-color:rgba(227,197,133,0.45);}
.culture-card .icon-glyph{font-family:var(--kana-font); font-size:2.1rem; color:var(--shu-bright); margin-bottom:14px; display:block;}
.culture-card h4{font-size:1.18rem; margin-bottom:10px; color:var(--washi);}
.culture-card p{font-size:0.94rem; opacity:0.82;}

.pull-quote{
  max-width:760px; margin:70px auto; text-align:center; font-family:var(--display);
  font-size:clamp(1.3rem,3vw,1.8rem); line-height:1.5; color:var(--gold-soft); font-style:italic; position:relative; padding:0 20px;
}
.pull-quote::before, .pull-quote::after{content:'"'; opacity:0.3;}

.divider-glyphs{
  text-align:center; font-family:var(--kana-font); font-size:1.4rem; letter-spacing:0.6em;
  color:rgba(227,197,133,0.35); margin:56px 0; padding-left:0.6em;
}

/* ---- Present section theme (neon tomorrow) ---- */
#present{
  scroll-margin-top:80px;
  background:
    radial-gradient(circle at 85% 0%, rgba(53,214,255,0.12), transparent 45%),
    radial-gradient(circle at 10% 90%, rgba(255,95,163,0.10), transparent 45%),
    var(--night);
  padding:110px 0 100px;
}
#present .eyebrow{color:var(--neon-blue);}
#present h2{background:linear-gradient(90deg, var(--washi), var(--neon-blue)); -webkit-background-clip:text; background-clip:text; -webkit-text-fill-color:transparent;}

.stat-strip{
  display:grid; grid-template-columns:repeat(auto-fit,minmax(150px,1fr)); gap:18px;
  max-width:1040px; margin:0 auto 70px;
}
.stat-card{
  text-align:center; padding:26px 14px; border-radius:16px;
  background:rgba(255,255,255,0.03); border:1px solid rgba(53,214,255,0.18);
}
.stat-card .stat-num{font-family:var(--display); font-size:2.1rem; font-weight:800; color:var(--neon-mint); display:block; line-height:1.1;}
.stat-card .stat-label{font-size:0.78rem; opacity:0.7; margin-top:6px; display:block;}

.present-grid{
  display:grid; grid-template-columns:repeat(auto-fit,minmax(300px,1fr)); gap:24px;
  max-width:1180px; margin:0 auto;
}
.present-card{
  position:relative; border-radius:20px; padding:30px 28px;
  background:linear-gradient(165deg, rgba(255,255,255,0.05), rgba(255,255,255,0.015));
  border:1px solid rgba(255,255,255,0.08); overflow:hidden;
  transition:transform .35s ease, border-color .35s ease, box-shadow .35s ease;
}
.present-card::before{
  content:''; position:absolute; inset:-1px; border-radius:20px; padding:1px;
  background:linear-gradient(135deg, var(--card-glow,var(--neon-blue)), transparent 60%);
  -webkit-mask:linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite:xor; mask-composite:exclude; opacity:0.5; pointer-events:none;
}
.present-card:hover{transform:translateY(-6px); box-shadow:0 18px 40px -16px rgba(0,0,0,0.5);}
.present-card .tag{
  font-family:var(--mono); font-size:0.68rem; letter-spacing:0.14em; text-transform:uppercase;
  color:var(--card-glow,var(--neon-blue)); margin-bottom:12px; display:inline-block;
}
.present-card h3{font-size:1.3rem; margin-bottom:12px; color:var(--washi); font-family:var(--body); font-weight:700;}
.present-card p{font-size:0.93rem; opacity:0.78; margin-bottom:10px;}
.present-card p:last-child{margin-bottom:0;}

/* ============================================================
   KANA SECTIONS (shared)
   ============================================================ */
.kana-section{padding:110px 0 100px;}
#hiragana{background:linear-gradient(180deg, var(--night) 0%, #1a1230 50%, #2a1240 100%);}
#katakana{background:linear-gradient(180deg, #2a1240 0%, #0b1730 50%, #051018 100%);}

.kana-intro{
  max-width:880px; margin:0 auto 60px; display:grid; grid-template-columns:1fr; gap:18px;
}
.kana-intro p{font-size:1.02rem; opacity:0.85;}
.kana-intro .big-sample{
  font-family:var(--kana-font); font-size:5rem; text-align:center; margin:8px 0 20px;
  background:linear-gradient(135deg, var(--hira-1), var(--hira-5), var(--hira-7));
  -webkit-background-clip:text; background-clip:text; -webkit-text-fill-color:transparent;
}
#katakana .big-sample{background:linear-gradient(135deg, var(--kata-1), var(--kata-3), var(--kata-5)); -webkit-background-clip:text; background-clip:text; -webkit-text-fill-color:transparent;}

.fact-row{
  display:grid; grid-template-columns:repeat(auto-fit,minmax(220px,1fr)); gap:16px;
  max-width:1040px; margin:0 auto 64px;
}
.fact-pill{
  border-radius:16px; padding:20px 20px; background:rgba(255,255,255,0.04); border:1px solid rgba(255,255,255,0.09);
}
.fact-pill .fp-label{font-family:var(--mono); font-size:0.68rem; letter-spacing:0.1em; text-transform:uppercase; opacity:0.55; margin-bottom:8px; display:block;}
.fact-pill p{font-size:0.9rem; opacity:0.85;}

/* gojuon grid */
.gojuon-wrap{max-width:1100px; margin:0 auto;}
.row-label{
  font-family:var(--mono); font-size:0.72rem; letter-spacing:0.18em; text-transform:uppercase;
  opacity:0.5; margin:34px 0 14px; padding-left:4px;
}
.row-label:first-child{margin-top:0;}
.kgrid{display:grid; grid-template-columns:repeat(auto-fill,minmax(108px,1fr)); gap:12px; margin-bottom:8px;}

.kcard{
  position:relative; aspect-ratio:1/1; border-radius:16px; border:none; cursor:pointer;
  display:flex; flex-direction:column; align-items:center; justify-content:center; gap:4px;
  background:linear-gradient(150deg, var(--c1), var(--c2));
  color:#fff; font-family:var(--body); overflow:hidden;
  animation:pulseGlow 3.6s ease-in-out infinite;
  animation-delay:var(--delay,0s);
  transition:transform .25s ease, box-shadow .25s ease;
}
.kcard:hover, .kcard:focus-visible{transform:translateY(-5px) scale(1.04); z-index:2;}
@keyframes pulseGlow{
  0%,100%{box-shadow:0 0 0px rgba(255,255,255,0);}
  50%{box-shadow:0 0 22px -2px var(--c2);}
}
.kcard .kchar{font-family:var(--kana-font); font-size:2.5rem; line-height:1;}
.kcard .kroma{font-family:var(--mono); font-size:0.68rem; letter-spacing:0.05em; opacity:0.92; text-transform:uppercase;}
.ksound{
  position:absolute; bottom:5px; right:5px;
  background:rgba(0,0,0,0.22); border:none; border-radius:8px;
  color:#fff; font-size:0.9rem; width:28px; height:28px;
  display:flex; align-items:center; justify-content:center;
  cursor:pointer; padding:0; line-height:1;
  transition:background 0.15s ease, transform 0.12s ease;
  z-index:2;
}
.ksound:hover,.ksound:focus-visible{background:rgba(0,0,0,0.45); transform:scale(1.15);}
.ksound:active{transform:scale(0.95);}
.ksound.playing{animation:soundPop 0.3s ease;}
@keyframes soundPop{0%{transform:scale(1);}50%{transform:scale(1.3);}100%{transform:scale(1);}}

.bonus-block{
  max-width:880px; margin:80px auto 0; padding:34px 30px; border-radius:22px;
  background:rgba(255,255,255,0.035); border:1px solid rgba(255,255,255,0.09);
}
.bonus-block h3{font-size:1.4rem; margin-bottom:14px;}
.bonus-block p{opacity:0.85; margin-bottom:14px; font-size:0.97rem;}
.bonus-table{width:100%; border-collapse:collapse; margin-top:18px; font-size:0.92rem;}
.bonus-table th, .bonus-table td{padding:10px 8px; text-align:center; border-bottom:1px solid rgba(255,255,255,0.08);}
.bonus-table th{font-family:var(--mono); font-size:0.68rem; letter-spacing:0.08em; text-transform:uppercase; opacity:0.6; font-weight:500;}
.bonus-table td.glyph{font-family:var(--kana-font); font-size:1.3rem;}

/* ============================================================
   MODAL
   ============================================================ */
#kmodal-overlay{
  position:fixed; inset:0; background:rgba(5,5,10,0.78); backdrop-filter:blur(6px);
  display:flex; align-items:center; justify-content:center; padding:20px; z-index:1000;
  opacity:0; pointer-events:none; transition:opacity .25s ease;
}
#kmodal-overlay.open{opacity:1; pointer-events:auto;}
#kmodal{
  background:linear-gradient(160deg, #1c1a2e, #100f1c);
  border:1px solid rgba(255,255,255,0.12); border-radius:24px;
  max-width:520px; width:100%; max-height:88vh; overflow-y:auto;
  padding:36px 32px 32px; position:relative;
  transform:translateY(18px) scale(0.97); transition:transform .3s cubic-bezier(.2,.9,.3,1.2);
}
#kmodal-overlay.open #kmodal{transform:translateY(0) scale(1);}
#kmodal-close{
  position:absolute; top:18px; right:18px; background:rgba(255,255,255,0.08); border:none;
  width:36px; height:36px; border-radius:50%; color:var(--washi); font-size:1.1rem; cursor:pointer;
  display:flex; align-items:center; justify-content:center; transition:background .2s ease;
}
#kmodal-close:hover{background:rgba(255,255,255,0.18);}
.kmodal-top{display:flex; align-items:center; gap:20px; margin-bottom:22px;}
.kmodal-char{
  font-family:var(--kana-font); font-size:4.2rem; line-height:1; width:90px; height:90px;
  display:flex; align-items:center; justify-content:center; border-radius:18px;
  background:linear-gradient(150deg, var(--c1), var(--c2)); color:#fff; flex-shrink:0;
}
.kmodal-romaji{font-family:var(--mono); font-size:1.6rem; letter-spacing:0.05em; text-transform:uppercase; color:var(--washi);}
.kmodal-type{font-size:0.78rem; opacity:0.55; margin-top:2px;}
.kmodal-section{margin-bottom:20px;}
.kmodal-section h4{
  font-family:var(--mono); font-size:0.68rem; letter-spacing:0.12em; text-transform:uppercase;
  opacity:0.55; margin-bottom:8px;
}
.kmodal-section p{font-size:0.96rem; opacity:0.9;}
.stroke-box{
  background:#fff; border-radius:14px; padding:10px; display:flex; align-items:center; justify-content:center;
  min-height:160px;
}
.stroke-box img{width:200px; height:150px; object-fit:contain;}
.stroke-fallback{color:#888; font-size:0.82rem; text-align:center; padding:20px; font-family:var(--body);}
.origin-kanji{
  display:inline-flex; align-items:center; gap:10px; background:rgba(255,255,255,0.06);
  border-radius:12px; padding:10px 16px; margin-top:4px;
}
.origin-kanji .ok-glyph{font-size:1.6rem; font-family:var(--kana-font);}
.kmodal-nav{display:flex; gap:10px; margin-top:26px;}
.kmodal-nav button{
  flex:1; font-family:var(--mono); font-size:0.72rem; letter-spacing:0.06em; text-transform:uppercase;
  padding:11px; border-radius:10px; border:1px solid rgba(255,255,255,0.15); background:transparent;
  color:var(--washi); cursor:pointer; transition:background .2s ease;
}
.kmodal-nav button:hover{background:rgba(255,255,255,0.1);}

/* ============================================================
   FOOTER
   ============================================================ */
footer{
  background:var(--ink); padding:50px 28px 36px; text-align:center;
  border-top:1px solid rgba(255,255,255,0.07);
}
footer .foot-glyph{font-family:var(--kana-font); font-size:1.3rem; color:var(--gold-soft); margin-bottom:10px; letter-spacing:0.3em;}
footer p{font-size:0.82rem; opacity:0.5; max-width:560px; margin:6px auto;}

/* misc */
.sr-only{position:absolute; width:1px; height:1px; overflow:hidden; clip:rect(0,0,0,0);}
::selection{background:var(--shu-bright); color:#fff;}
/* ============================================================
   APP PAGE SYSTEM (History / Hiragana / Katakana as separate views)
   ============================================================ */
.app-page{display:none;}
.app-page.active{display:block;}

/* ============================================================
   HISTORY SUB-SECTION CHIP NAV
   ============================================================ */
.chip-nav-wrap{
  position:sticky; top:62px; z-index:80; margin:0 0 50px;
  background:linear-gradient(180deg, var(--ink) 60%, transparent);
  padding:14px 0 18px;
}
.chip-nav{
  display:flex; gap:8px; overflow-x:auto; scrollbar-width:thin; padding:2px 28px;
  -webkit-overflow-scrolling:touch;
}
.chip-nav::-webkit-scrollbar{height:4px;}
.chip-nav::-webkit-scrollbar-thumb{background:rgba(227,197,133,0.3); border-radius:4px;}
.chip{
  flex:0 0 auto; font-family:var(--mono); font-size:0.7rem; letter-spacing:0.05em;
  white-space:nowrap; padding:8px 16px; border-radius:99px; text-decoration:none;
  color:rgba(244,236,218,0.75); background:rgba(255,255,255,0.04);
  border:1px solid rgba(227,197,133,0.22); transition:all .2s ease;
}
.chip:hover, .chip:focus-visible{background:rgba(227,197,133,0.18); color:var(--washi); border-color:var(--gold-soft);}
.chip-accent{color:var(--gold-soft); border-color:var(--gold); background:rgba(204,154,79,0.1);}

/* ============================================================
   ERA SLIDER COMPONENT
   ============================================================ */
.era-slider-component{
  max-width:780px; margin:0 auto 70px; border-radius:26px; padding:38px 32px 34px;
  background:linear-gradient(160deg, rgba(255,255,255,0.05), rgba(255,255,255,0.015));
  border:1px solid rgba(227,197,133,0.22);
}
.era-slider-display{min-height:340px;}
.era-slider-years{
  font-family:var(--mono); font-size:0.82rem; letter-spacing:0.05em; color:var(--gold-soft);
  margin-bottom:10px;
}
.era-slider-display h3{font-size:1.7rem; margin-bottom:4px; color:var(--washi);}
.era-slider-display .era-jp{font-family:var(--kana-font); color:var(--gold-soft); font-size:1.05rem; display:block; margin-bottom:18px;}
.era-slider-display p{margin-bottom:14px; opacity:0.88; font-size:1rem;}
.era-slider-display p:last-child{margin-bottom:0;}
.era-slider-display strong{color:var(--gold-soft); font-weight:700;}
.era-fade{animation:eraFadeIn .35s ease;}
@keyframes eraFadeIn{from{opacity:0; transform:translateY(6px);} to{opacity:1; transform:translateY(0);}}

.era-slider-controls{display:flex; align-items:flex-start; gap:14px; margin-top:32px; padding-top:6px;}
.era-step-btn{
  flex:0 0 auto; width:40px; height:40px; border-radius:50%; border:1px solid rgba(227,197,133,0.35);
  background:rgba(255,255,255,0.04); color:var(--washi); font-size:1.1rem; cursor:pointer;
  transition:background .2s ease, border-color .2s ease;
}
.era-step-btn:hover{background:rgba(227,197,133,0.2); border-color:var(--gold-soft);}
.era-step-btn:disabled{opacity:0.3; cursor:default;}
.era-slider-track-wrap{flex:1; position:relative;}
#eraRange{
  width:100%; -webkit-appearance:none; appearance:none; height:4px; border-radius:4px;
  background:rgba(255,255,255,0.15); outline:none; cursor:pointer;
}
#eraRange::-webkit-slider-thumb{
  -webkit-appearance:none; appearance:none; width:18px; height:18px; border-radius:50%;
  background:var(--shu-bright); border:3px solid var(--washi); box-shadow:0 0 10px rgba(196,64,47,0.5); cursor:pointer;
}
#eraRange::-moz-range-thumb{
  width:18px; height:18px; border-radius:50%; background:var(--shu-bright); border:3px solid var(--washi);
  box-shadow:0 0 10px rgba(196,64,47,0.5); cursor:pointer;
}
.era-slider-ticks{display:flex; justify-content:space-between; margin-top:8px; padding:0 1px;}
.era-slider-ticks span{width:2px; height:5px; background:rgba(255,255,255,0.25); border-radius:2px;}
.era-slider-labels{display:flex; justify-content:space-between; margin-top:5px; padding:0 1px; height:48px; align-items:flex-start; overflow:visible;}
.era-slider-labels span{
  font-family:var(--mono); font-size:0.5rem; color:rgba(244,236,218,0.38);
  white-space:nowrap; display:block; width:0; overflow:visible;
  transform:rotate(-45deg); transform-origin:top left; line-height:1;
  transition:color .2s ease;
}
.era-slider-labels span.era-label-active{color:var(--gold-soft);}

@media (max-width:600px){
  .era-slider-labels span{font-size:0.45rem;}
}

/* era progress counter */
.era-progress{
  display:inline-block; font-family:var(--mono); font-size:0.68rem;
  color:rgba(244,236,218,0.45); letter-spacing:0.06em; margin-bottom:14px;
}
.era-progress strong{color:var(--shu-bright); font-weight:600;}

/* chip active highlight (IntersectionObserver) */
.chip.chip-active{
  background:rgba(227,197,133,0.22); color:var(--washi);
  border-color:var(--gold-soft);
}

/* ============================================================
   KANA QUIZ
   ============================================================ */
.kana-quiz-wrap{
  max-width:640px; margin:80px auto 0; padding:36px 32px;
  border-radius:24px; text-align:center;
  background:linear-gradient(160deg, rgba(255,255,255,0.05), rgba(255,255,255,0.015));
  border:1px solid rgba(255,255,255,0.09);
}
.kana-quiz-wrap h3{font-size:1.3rem; margin-bottom:6px;}
.kana-quiz-wrap p{font-size:0.9rem; opacity:0.7; margin-bottom:26px;}
.quiz-card{
  width:140px; height:140px; border-radius:22px; margin:0 auto 22px;
  display:flex; flex-direction:column; align-items:center; justify-content:center; gap:6px;
  background:linear-gradient(150deg, var(--qc1,#ff6f9c), var(--qc2,#5ad1ff)); cursor:pointer;
  transition:transform .25s ease, box-shadow .25s ease;
  box-shadow:0 8px 28px -8px rgba(0,0,0,0.5);
}
.quiz-card:hover{transform:translateY(-4px) scale(1.04);}
.quiz-char{font-family:var(--kana-font); font-size:3.6rem; color:#fff; line-height:1;}
.quiz-roma{
  font-family:var(--mono); font-size:0.9rem; color:rgba(255,255,255,0.95);
  letter-spacing:0.12em; text-transform:uppercase; margin-top:2px;
  opacity:0; transition:opacity .3s ease;
}
.quiz-roma.revealed{opacity:1;}
.quiz-row{display:flex; gap:10px; justify-content:center; margin-top:4px; flex-wrap:wrap;}
.quiz-btn{
  font-family:var(--mono); font-size:0.72rem; letter-spacing:0.06em; text-transform:uppercase;
  padding:10px 22px; border-radius:99px; border:1px solid rgba(255,255,255,0.2);
  background:rgba(255,255,255,0.06); color:var(--washi); cursor:pointer;
  transition:all .2s ease;
}
.quiz-btn:hover{background:rgba(255,255,255,0.14);}
.quiz-btn.primary{background:var(--shu-bright); border-color:var(--shu-bright); color:#fff;}
.quiz-btn.primary:hover{background:var(--shu);}
.quiz-score{
  font-family:var(--mono); font-size:0.72rem; letter-spacing:0.08em; opacity:0.5;
  margin-top:16px; min-height:1.2em;
}

@media (max-width:600px){
  .era-slider-component{padding:28px 20px 26px; border-radius:20px;}
  .era-slider-display h3{font-size:1.35rem;}
}

/* ============================================================
   HISTORY PAGE-UP / PAGE-DOWN BUTTONS
   ============================================================ */
#historyScrollNav{
  position:fixed; right:18px; bottom:24px; z-index:200;
  display:none; flex-direction:column; gap:10px;
}
#historyScrollNav.show{display:flex;}
.scroll-nav-btn{
  width:46px; height:46px; border-radius:50%; border:1px solid rgba(227,197,133,0.35);
  background:rgba(20,18,30,0.85); backdrop-filter:blur(8px); color:var(--washi); font-size:1.15rem;
  cursor:pointer; box-shadow:0 6px 18px -6px rgba(0,0,0,0.6); transition:background .2s ease, transform .2s ease;
}
.scroll-nav-btn:hover{background:rgba(227,197,133,0.25); transform:translateY(-2px);}
.scroll-nav-btn:active{transform:translateY(0);}

/* ============================================================
   READING PROGRESS BAR
   ============================================================ */
#readingProgress{
  position:fixed; top:0; left:0; width:0; height:3px; z-index:600;
  background:linear-gradient(90deg, var(--shu-bright) 0%, var(--neon-pink) 50%, var(--neon-blue) 100%);
  transition:width 0.08s linear;
  pointer-events:none;
  border-radius:0 2px 2px 0;
}

/* ============================================================
   QUIZ SCORE TRACKING
   ============================================================ */
.quiz-judge-row{ margin-top:8px; }
.quiz-btn.quiz-correct{
  border-color:var(--matcha) !important; color:var(--matcha) !important;
}
.quiz-btn.quiz-correct:hover{ background:rgba(124,148,104,0.2) !important; }
.quiz-btn.quiz-wrong{
  border-color:var(--shu-bright) !important; color:var(--shu-bright) !important;
}
.quiz-btn.quiz-wrong:hover{ background:rgba(196,64,47,0.18) !important; }
.quiz-tally{
  font-family:var(--mono); font-size:0.69rem; letter-spacing:0.04em;
  opacity:0.75; margin-top:10px; min-height:1.2em;
}
.quiz-tally .tally-correct{ color:var(--matcha); }
.quiz-tally .tally-wrong{ color:var(--shu-bright); }
.quiz-shortcut-hint{
  font-family:var(--mono); font-size:0.6rem; opacity:0.38; margin-top:8px;
  letter-spacing:0.05em;
}

/* ============================================================
   MODAL COPY BUTTON + TOAST
   ============================================================ */
#kmodal-copy{
  position:absolute; top:14px; right:50px; width:30px; height:30px;
  border-radius:8px; border:1px solid rgba(255,255,255,0.18);
  background:rgba(255,255,255,0.06); color:rgba(244,236,218,0.7);
  font-size:1rem; cursor:pointer;
  display:flex; align-items:center; justify-content:center;
  transition:background .2s ease, color .2s ease;
}
#kmodal-copy:hover{ background:rgba(255,255,255,0.15); color:var(--washi); }
.copy-toast{
  position:fixed; bottom:30px; left:50%; transform:translateX(-50%);
  background:var(--ink-2); border:1px solid rgba(255,255,255,0.18);
  color:var(--washi); font-family:var(--mono); font-size:0.78rem;
  padding:9px 20px; border-radius:99px; z-index:700;
  pointer-events:none; opacity:0;
  transition:opacity .22s ease;
  white-space:nowrap;
}
.copy-toast.show{ opacity:1; }

/* ============================================================
   NAV USERNAME (was email)
   ============================================================ */
/* Reuse existing .nav-user-email class; display name instead of email */
.nav-user-email{ font-size:0.7rem; }