/* ============================================================
   日本語スタディ — Hana's exam-prep app
   Vanilla CSS. Washi-paper aesthetic. Print-friendly.
   ============================================================ */

:root {
  /* paper + ink */
  --bg:          #f8f5ee;
  --bg-card:    #fdfbf6;
  --bg-sunk:    #efeadc;
  --ink:        #1f2a32;
  --ink-soft:   #4a5762;
  --muted:      #8a8275;
  --rule:       #d9cfb9;
  --rule-soft:  #ebe3cf;

  /* accents */
  --sakura:     #c7547d;
  --sakura-bg:  #fbe9ef;
  --matcha:     #5e8a52;
  --matcha-bg:  #ebf2e0;
  --indigo:     #2b5d8a;
  --indigo-bg:  #e2ecf4;
  --amber:      #b56a1f;
  --amber-bg:   #fbeed4;
  --plum:       #6a3d6e;
  --plum-bg:    #efe1ee;

  /* group colours */
  --g1:         #5e8a52;
  --g1-bg:      #ebf2e0;
  --g2:         #2b5d8a;
  --g2-bg:      #e2ecf4;
  --g3:         #6a3d6e;
  --g3-bg:      #efe1ee;

  /* type */
  --serif-jp: "Yu Mincho", "YuMincho", "Hiragino Mincho ProN",
              "Source Han Serif JP", "Noto Serif JP", "MS Mincho", serif;
  --sans-jp:  "Hiragino Sans", "Yu Gothic", "Meiryo",
              "Source Han Sans JP", "Noto Sans JP", sans-serif;
  --serif-en: "Iowan Old Style", "Charter", "Source Serif Pro",
              "Cambria", Georgia, serif;
  --sans-en:  -apple-system, BlinkMacSystemFont, "Segoe UI",
              "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background:
    radial-gradient(1200px 600px at 12% -10%, #f1e7d3 0%, transparent 60%),
    radial-gradient(900px 500px at 95% 105%, #efe5d2 0%, transparent 65%),
    var(--bg);
  color: var(--ink);
  font-family: var(--sans-en);
  font-size: 16px;
  line-height: 1.6;
  min-height: 100vh;
  font-feature-settings: "palt";
}

.jp,
.flash-prompt,
.grammar-template,
.particle-pill .ch,
.verb-form,
.trap-jp {
  font-family: var(--sans-jp);
}

::selection { background: var(--sakura-bg); color: var(--sakura); }

/* ===================== HEADER ===================== */
.site-header {
  background: linear-gradient(180deg, #fdfbf6 0%, #f5eedc 100%);
  border-bottom: 1px solid var(--rule);
  position: sticky;
  top: 0;
  z-index: 50;
  box-shadow: 0 1px 0 rgba(0,0,0,0.02), 0 6px 16px rgba(31,42,50,0.04);
}

.header-inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 1.4rem 1.6rem 0.8rem;
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.title-block h1 {
  margin: 0;
  font-weight: 600;
  font-size: 1.6rem;
  letter-spacing: 0.01em;
  display: flex;
  align-items: baseline;
  gap: 0.55rem;
  flex-wrap: wrap;
}
.title-block h1 .jp {
  font-family: var(--serif-jp);
  font-size: 1.85rem;
  color: var(--ink);
}
.title-block h1 .en {
  font-family: var(--serif-en);
  color: var(--ink-soft);
  font-style: italic;
  font-weight: 400;
  font-size: 1.1rem;
}
.subtitle {
  margin: 0.2rem 0 0;
  color: var(--ink-soft);
  font-size: 0.92rem;
}
.exam-date {
  color: var(--sakura);
  font-weight: 600;
  padding: 0.1rem 0.5rem;
  background: var(--sakura-bg);
  border-radius: 3px;
  margin-left: 0.2rem;
}

.header-meta {
  display: flex;
  align-items: center;
  gap: 0.8rem;
}

.meta-card {
  background: var(--bg-card);
  border: 1px solid var(--rule);
  border-radius: 4px;
  padding: 0.45rem 0.85rem;
  display: flex;
  align-items: baseline;
  gap: 0.4rem;
  box-shadow: inset 0 -2px 0 var(--rule-soft);
}
.meta-label {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
}
.meta-value {
  font-family: var(--serif-en);
  font-weight: 600;
  font-size: 1.3rem;
  color: var(--sakura);
}
.meta-sub { color: var(--muted); font-size: 0.85rem; }

/* ===================== TAB NAV ===================== */
.tab-nav {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 1.6rem;
  display: flex;
  gap: 0.15rem;
  overflow-x: auto;
  scrollbar-width: thin;
}
.tab {
  background: transparent;
  border: none;
  border-bottom: 3px solid transparent;
  padding: 0.7rem 1.05rem 0.85rem;
  margin-bottom: -1px;
  color: var(--ink-soft);
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.05rem;
  font-family: var(--sans-en);
  white-space: nowrap;
  transition: color 0.15s, border-color 0.15s, background 0.15s;
}
.tab .tab-jp {
  font-family: var(--serif-jp);
  font-size: 1.05rem;
  color: var(--ink);
}
.tab .tab-en {
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}
.tab:hover {
  background: rgba(199, 84, 125, 0.06);
  color: var(--sakura);
}
.tab:hover .tab-en { color: var(--sakura); }
.tab.active {
  border-bottom-color: var(--sakura);
  color: var(--sakura);
}
.tab.active .tab-jp { color: var(--sakura); }
.tab.active .tab-en { color: var(--sakura); font-weight: 600; }

/* ===================== MAIN / PANELS ===================== */
.site-main {
  max-width: 1180px;
  margin: 0 auto;
  padding: 1.6rem 1.6rem 3rem;
}
.panel {
  display: none;
  animation: fadeIn 0.25s ease;
}
.panel.active { display: block; }
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to   { opacity: 1; transform: translateY(0); }
}

.panel-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 1.5rem;
  margin-bottom: 1.4rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--rule-soft);
  flex-wrap: wrap;
}
.panel-head h2 {
  margin: 0 0 0.2rem;
  font-family: var(--serif-en);
  font-weight: 600;
  font-size: 1.55rem;
  color: var(--ink);
}
.panel-head .muted {
  margin: 0;
  font-size: 0.92rem;
}
.muted { color: var(--ink-soft); }
.muted.small { font-size: 0.82rem; }
.warn { color: var(--amber); font-size: 0.88rem; margin: 0.4rem 0 0; }

/* ===================== CONTROLS ===================== */
.vocab-controls,
.flash-controls,
.quiz-controls,
.grammar-controls,
.verb-controls {
  display: flex;
  gap: 0.55rem;
  flex-wrap: wrap;
  align-items: center;
}
input[type="search"],
select {
  font: inherit;
  padding: 0.45rem 0.7rem;
  border: 1px solid var(--rule);
  background: var(--bg-card);
  border-radius: 4px;
  color: var(--ink);
  min-width: 11rem;
  transition: border-color 0.15s, box-shadow 0.15s;
}
input[type="search"]:focus,
select:focus {
  outline: none;
  border-color: var(--sakura);
  box-shadow: 0 0 0 3px var(--sakura-bg);
}
.toggle-group {
  display: flex;
  gap: 0.9rem;
  flex-wrap: wrap;
  font-size: 0.88rem;
  color: var(--ink-soft);
}
.toggle-group label,
.toggle-inline {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  cursor: pointer;
  user-select: none;
}
.toggle-inline { font-size: 0.88rem; color: var(--ink-soft); }

/* buttons */
.primary-btn,
.ghost-btn {
  font: inherit;
  border-radius: 4px;
  padding: 0.45rem 0.95rem;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.15s;
  white-space: nowrap;
}
.primary-btn {
  background: var(--sakura);
  color: #fff;
  border-color: var(--sakura);
}
.primary-btn:hover { background: #b04568; border-color: #b04568; }
.ghost-btn {
  background: var(--bg-card);
  color: var(--ink-soft);
  border-color: var(--rule);
}
.ghost-btn:hover {
  background: var(--bg-sunk);
  color: var(--ink);
}
.ghost-btn.success { color: var(--matcha); border-color: var(--matcha); }
.ghost-btn.success:hover { background: var(--matcha-bg); }
.ghost-btn.danger { color: var(--amber); border-color: var(--amber); }
.ghost-btn.danger:hover { background: var(--amber-bg); }
.ghost-btn.small { padding: 0.25rem 0.6rem; font-size: 0.82rem; }

/* ===================== VOCAB LIST ===================== */
.lesson-tally {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
  margin: 0.4rem 0 1rem;
  font-size: 0.82rem;
}
.lesson-tally .pill {
  background: var(--bg-card);
  border: 1px solid var(--rule);
  border-radius: 999px;
  padding: 0.15rem 0.65rem;
  color: var(--ink-soft);
}
.lesson-tally .pill strong { color: var(--sakura); margin-left: 0.3rem; }

.vocab-list { display: flex; flex-direction: column; gap: 1.3rem; }

.vocab-lesson {
  background: var(--bg-card);
  border: 1px solid var(--rule-soft);
  border-radius: 5px;
  padding: 1rem 1.1rem 0.8rem;
  box-shadow: 0 1px 0 var(--rule-soft);
}
.vocab-lesson > h3 {
  margin: 0 0 0.6rem;
  font-family: var(--serif-en);
  font-size: 1.15rem;
  color: var(--indigo);
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  border-bottom: 1px solid var(--rule-soft);
  padding-bottom: 0.4rem;
}
.vocab-lesson > h3 .lesson-meta {
  font-size: 0.8rem;
  color: var(--muted);
  font-family: var(--sans-en);
  font-weight: normal;
}

.vocab-category {
  margin: 0.9rem 0 0;
}
.vocab-category-title {
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 0.35rem;
  font-weight: 600;
}
.vocab-rows {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 0.4rem;
}
.vocab-row {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 0.6rem;
  padding: 0.45rem 0.55rem;
  background: #fff;
  border: 1px solid var(--rule-soft);
  border-radius: 4px;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
  position: relative;
}
.vocab-row:hover {
  border-color: var(--sakura);
  background: #fffafc;
}
.vocab-row.locked {
  background: var(--matcha-bg);
  border-color: var(--matcha);
}
.vocab-row.locked .vocab-jp { color: var(--matcha); }
.vocab-row .vocab-text {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  min-width: 0;
}
.vocab-jp {
  font-family: var(--sans-jp);
  font-size: 1.1rem;
  color: var(--ink);
  line-height: 1.3;
}
.vocab-jp .kanji {
  font-family: var(--serif-jp);
  color: var(--muted);
  font-size: 0.9rem;
  margin-left: 0.4rem;
}
.vocab-en {
  font-size: 0.85rem;
  color: var(--ink-soft);
}
.vocab-trap {
  background: var(--amber-bg);
  color: var(--amber);
  border-radius: 3px;
  padding: 0 0.3rem;
  font-size: 0.7rem;
  letter-spacing: 0.05em;
  margin-left: 0.3rem;
}
.vocab-lock-btn {
  width: 1.6rem;
  height: 1.6rem;
  border-radius: 4px;
  border: 1px solid var(--rule);
  background: #fff;
  color: var(--muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  flex-shrink: 0;
  transition: all 0.15s;
}
.vocab-row.locked .vocab-lock-btn {
  background: var(--matcha);
  color: #fff;
  border-color: var(--matcha);
}
.vocab-lock-btn:hover { border-color: var(--matcha); color: var(--matcha); }

/* hide states */
.hide-en .vocab-en { visibility: hidden; }
.hide-jp .vocab-jp { visibility: hidden; }
.vocab-row.flipped .vocab-en { visibility: visible !important; }
.vocab-row.flipped .vocab-jp { visibility: visible !important; }

/* ===================== FLASHCARDS ===================== */
.flash-stage {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  padding-top: 1rem;
}
.flash-progress {
  font-size: 0.9rem;
  color: var(--ink-soft);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}
.flash-progress .dot { color: var(--rule); }
.flashcard {
  width: min(560px, 100%);
  aspect-ratio: 16 / 10;
  perspective: 1200px;
  cursor: pointer;
  outline: none;
}
.flashcard:focus-visible .flash-inner { box-shadow: 0 0 0 3px var(--sakura-bg); }
.flash-inner {
  position: relative;
  width: 100%;
  height: 100%;
  transition: transform 0.55s cubic-bezier(0.4, 0, 0.2, 1);
  transform-style: preserve-3d;
  border-radius: 6px;
}
.flashcard.flipped .flash-inner { transform: rotateY(180deg); }

.flash-face {
  position: absolute;
  inset: 0;
  background: var(--bg-card);
  border: 1px solid var(--rule);
  border-radius: 6px;
  padding: 2rem 1.5rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  gap: 0.7rem;
  backface-visibility: hidden;
  box-shadow: 0 8px 24px rgba(31,42,50,0.06), inset 0 -4px 0 var(--rule-soft);
}
.flash-back {
  transform: rotateY(180deg);
  background: linear-gradient(135deg, #fdfbf6 0%, #fbe9ef 100%);
}
.flash-prompt-label {
  font-size: 0.72rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--sakura);
  font-weight: 600;
}
.flash-prompt {
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  line-height: 1.3;
  color: var(--ink);
  font-weight: 500;
}
.flash-prompt.jp { font-family: var(--sans-jp); }
.flash-kanji {
  font-family: var(--serif-jp);
  color: var(--muted);
  font-size: 1.15rem;
}
.flash-meta {
  font-size: 0.78rem;
  color: var(--muted);
}
.flash-hint {
  position: absolute;
  bottom: 0.7rem;
  font-size: 0.72rem;
  color: var(--muted);
  letter-spacing: 0.04em;
}
.flash-actions {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
  justify-content: center;
}

/* ===================== QUIZ ===================== */
.quiz-stage { display: flex; flex-direction: column; gap: 1rem; }
.quiz-scorebar {
  display: flex;
  gap: 1.2rem;
  flex-wrap: wrap;
  padding: 0.6rem 0.9rem;
  background: var(--bg-card);
  border: 1px solid var(--rule-soft);
  border-radius: 4px;
  font-size: 0.92rem;
}
.quiz-scorebar strong {
  font-family: var(--serif-en);
  color: var(--sakura);
}
.quiz-card {
  background: var(--bg-card);
  border: 1px solid var(--rule);
  border-radius: 5px;
  padding: 1.4rem 1.4rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  min-height: 18rem;
}
.quiz-prompt-label {
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}
.quiz-prompt {
  font-size: clamp(1.4rem, 3.6vw, 2rem);
  font-family: var(--sans-jp);
  color: var(--ink);
  line-height: 1.3;
  text-align: center;
  padding: 0.6rem 0 0.8rem;
  border-bottom: 1px dashed var(--rule);
}
.quiz-prompt.en {
  font-family: var(--serif-en);
  font-style: italic;
}
.quiz-options {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 0.55rem;
}
.quiz-opt {
  font: inherit;
  text-align: left;
  padding: 0.7rem 0.9rem;
  background: #fff;
  border: 1px solid var(--rule);
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.15s;
  font-size: 1rem;
  color: var(--ink);
}
.quiz-opt.jp { font-family: var(--sans-jp); }
.quiz-opt:hover:not(.disabled) {
  border-color: var(--sakura);
  background: #fffafc;
  transform: translateY(-1px);
}
.quiz-opt.correct {
  background: var(--matcha-bg);
  border-color: var(--matcha);
  color: var(--matcha);
  font-weight: 600;
}
.quiz-opt.wrong {
  background: var(--amber-bg);
  border-color: var(--amber);
  color: var(--amber);
  text-decoration: line-through;
}
.quiz-opt.disabled { cursor: default; }
.quiz-feedback {
  min-height: 1.6rem;
  font-size: 0.95rem;
  color: var(--ink-soft);
}
.quiz-feedback.ok { color: var(--matcha); }
.quiz-feedback.bad { color: var(--amber); }

.quiz-mistakes-wrap details {
  background: var(--bg-card);
  border: 1px solid var(--rule-soft);
  border-radius: 4px;
  padding: 0.6rem 0.9rem;
}
.quiz-mistakes-wrap summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--ink-soft);
}
.quiz-mistakes {
  margin: 0.6rem 0;
  padding-left: 1.4rem;
}
.quiz-mistakes li {
  margin-bottom: 0.3rem;
  font-size: 0.92rem;
}
.quiz-mistakes .jp { font-family: var(--sans-jp); color: var(--ink); }
.quiz-mistakes .arrow { color: var(--muted); margin: 0 0.3rem; }

/* ===================== GRAMMAR ===================== */
.grammar-keypanels {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 0.8rem;
  margin-bottom: 1.6rem;
}
.keypanel {
  background: var(--bg-card);
  border: 1px solid var(--rule);
  border-radius: 5px;
  padding: 0.85rem 1rem 0.9rem;
}
.keypanel h3 {
  margin: 0 0 0.5rem;
  font-family: var(--serif-en);
  font-size: 1rem;
  color: var(--ink);
  padding-bottom: 0.3rem;
  border-bottom: 1px solid var(--rule-soft);
}
.keypanel-desu  { border-left: 4px solid var(--indigo); }
.keypanel-masu  { border-left: 4px solid var(--matcha); }
.keypanel-i     { border-left: 4px solid var(--sakura); }
.keypanel-na    { border-left: 4px solid var(--plum); }
.conj-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
}
.conj-table th,
.conj-table td {
  padding: 0.3rem 0.4rem;
  text-align: left;
  border-bottom: 1px dotted var(--rule);
}
.conj-table th {
  color: var(--muted);
  font-weight: 600;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.conj-table td:nth-child(2) {
  font-family: var(--sans-jp);
  font-size: 1rem;
}

.section-title {
  margin: 1.8rem 0 0.8rem;
  font-family: var(--serif-en);
  font-size: 1.15rem;
  color: var(--ink);
  border-bottom: 1px solid var(--rule);
  padding-bottom: 0.4rem;
  font-weight: 600;
}

.grammar-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 0.9rem;
}
.grammar-card {
  background: var(--bg-card);
  border: 1px solid var(--rule-soft);
  border-left: 4px solid var(--indigo);
  border-radius: 4px;
  padding: 0.85rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.grammar-card.L1 { border-left-color: #8a5b2b; }
.grammar-card.L2 { border-left-color: #b56a1f; }
.grammar-card.L3 { border-left-color: #c7547d; }
.grammar-card.L4 { border-left-color: #6a3d6e; }
.grammar-card.L5 { border-left-color: #2b5d8a; }
.grammar-card.L6 { border-left-color: #2c7b7b; }
.grammar-card.L7 { border-left-color: #5e8a52; }
.grammar-card.L8 { border-left-color: #4a4f8a; }
.grammar-card-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 0.5rem;
  flex-wrap: wrap;
}
.grammar-lesson-tag {
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  background: var(--bg-sunk);
  color: var(--ink-soft);
  padding: 0.1rem 0.5rem;
  border-radius: 3px;
}
.grammar-name {
  font-family: var(--serif-en);
  font-size: 1.05rem;
  color: var(--ink);
  font-weight: 600;
}
.grammar-template {
  background: var(--bg-sunk);
  padding: 0.55rem 0.7rem;
  font-size: 1.05rem;
  border-radius: 3px;
  color: var(--ink);
  border-left: 2px solid var(--rule);
  white-space: pre-wrap;
}
.grammar-examples {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}
.grammar-examples li {
  font-family: var(--sans-jp);
  font-size: 0.95rem;
  color: var(--ink);
  padding-left: 0.7rem;
  border-left: 2px solid var(--sakura-bg);
}
.grammar-examples li .gloss {
  display: block;
  font-family: var(--serif-en);
  font-style: italic;
  font-size: 0.82rem;
  color: var(--muted);
  margin-top: 0.1rem;
}
.grammar-trap {
  background: var(--amber-bg);
  color: var(--amber);
  padding: 0.4rem 0.6rem;
  border-radius: 3px;
  font-size: 0.85rem;
}
.grammar-trap::before {
  content: "⚠️ ";
}

/* ===================== VERBS ===================== */
.verb-conj-result:empty { display: none; }
.verb-conj-result {
  background: var(--bg-card);
  border: 1px solid var(--rule);
  border-radius: 5px;
  padding: 1.1rem 1.3rem;
  margin-bottom: 1.4rem;
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 1.2rem;
}
.verb-conj-info h3 {
  margin: 0 0 0.5rem;
  font-family: var(--sans-jp);
  font-size: 1.6rem;
  color: var(--ink);
}
.verb-conj-info .verb-meta-row {
  font-size: 0.92rem;
  color: var(--ink-soft);
  margin-bottom: 0.2rem;
}
.verb-conj-info .verb-meta-row strong { color: var(--ink); }
.verb-group-chip {
  display: inline-block;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  padding: 0.15rem 0.55rem;
  border-radius: 3px;
  margin-right: 0.3rem;
  font-weight: 600;
}
.verb-group-1 { background: var(--g1-bg); color: var(--g1); }
.verb-group-2 { background: var(--g2-bg); color: var(--g2); }
.verb-group-3 { background: var(--g3-bg); color: var(--g3); }

.verb-conj-table {
  border-collapse: collapse;
  width: 100%;
  font-size: 0.92rem;
}
.verb-conj-table th,
.verb-conj-table td {
  padding: 0.45rem 0.55rem;
  text-align: left;
  border-bottom: 1px solid var(--rule-soft);
}
.verb-conj-table th {
  background: var(--bg-sunk);
  color: var(--ink-soft);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.verb-conj-table td.form {
  font-family: var(--sans-jp);
  font-size: 1.08rem;
}
.verb-conj-table td.form strong { color: var(--sakura); }

.verbs-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 0.5rem;
}
.verb-chip {
  background: var(--bg-card);
  border: 1px solid var(--rule-soft);
  border-radius: 4px;
  padding: 0.45rem 0.65rem;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  transition: all 0.15s;
}
.verb-chip:hover {
  border-color: var(--sakura);
  background: #fffafc;
  transform: translateY(-1px);
}
.verb-chip.active {
  border-color: var(--sakura);
  background: var(--sakura-bg);
}
.verb-chip-jp {
  font-family: var(--sans-jp);
  font-size: 1rem;
}
.verb-chip-en {
  font-size: 0.78rem;
  color: var(--ink-soft);
}
.verb-chip-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 0.2rem;
}
.verb-trap {
  font-size: 0.7rem;
  color: var(--amber);
  background: var(--amber-bg);
  padding: 0 0.3rem;
  border-radius: 3px;
}

/* ===================== PARTICLES ===================== */
.particle-picker {
  background: var(--bg-card);
  border: 1px solid var(--rule);
  border-radius: 5px;
  padding: 1rem 1.2rem 1.2rem;
  margin-bottom: 1rem;
}
.particle-picker h3 {
  margin: 0 0 0.6rem;
  font-family: var(--serif-en);
  font-size: 1.05rem;
  color: var(--ink-soft);
  font-weight: 500;
  font-style: italic;
}
.particle-contexts {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 0.5rem;
}
.particle-ctx-btn {
  font: inherit;
  text-align: left;
  background: #fff;
  border: 1px solid var(--rule);
  border-radius: 4px;
  padding: 0.55rem 0.8rem;
  cursor: pointer;
  transition: all 0.15s;
  color: var(--ink);
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}
.particle-ctx-btn:hover {
  border-color: var(--sakura);
  background: #fffafc;
}
.particle-ctx-btn.active {
  border-color: var(--sakura);
  background: var(--sakura-bg);
}
.particle-ctx-btn .ctx-jp {
  font-family: var(--sans-jp);
  color: var(--muted);
  font-size: 0.85rem;
}

.particle-result:empty { display: none; }
.particle-result {
  background: linear-gradient(135deg, #fdfbf6 0%, #fbe9ef 100%);
  border: 1px solid var(--sakura);
  border-radius: 5px;
  padding: 1.2rem 1.4rem;
  margin-bottom: 1rem;
}
.particle-result-head {
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
  margin-bottom: 0.6rem;
}
.particle-result-glyph {
  font-family: var(--serif-jp);
  font-size: 3rem;
  color: var(--sakura);
  line-height: 1;
}
.particle-result-name {
  font-family: var(--serif-en);
  font-size: 1.2rem;
  color: var(--ink);
}
.particle-result-name .romaji {
  color: var(--muted);
  font-style: italic;
  margin-left: 0.4rem;
}
.particle-result p { margin: 0.3rem 0; }
.particle-result-examples {
  list-style: none;
  padding: 0;
  margin: 0.4rem 0 0;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}
.particle-result-examples li {
  font-family: var(--sans-jp);
  background: #fff;
  border-left: 2px solid var(--sakura);
  padding: 0.3rem 0.6rem;
  border-radius: 0 3px 3px 0;
}
.particle-result-warn {
  background: var(--amber-bg);
  color: var(--amber);
  padding: 0.5rem 0.7rem;
  border-radius: 3px;
  font-size: 0.88rem;
  margin-top: 0.6rem;
}

.particle-map {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 0.5rem;
}
.particle-card {
  background: var(--bg-card);
  border: 1px solid var(--rule-soft);
  border-radius: 4px;
  padding: 0.7rem 0.85rem;
  display: flex;
  gap: 0.8rem;
  align-items: center;
}
.particle-card .glyph {
  font-family: var(--serif-jp);
  font-size: 1.8rem;
  color: var(--sakura);
  line-height: 1;
  flex-shrink: 0;
}
.particle-card .body { display: flex; flex-direction: column; gap: 0.15rem; }
.particle-card .uses {
  font-size: 0.88rem;
  color: var(--ink);
}
.particle-card .example {
  font-family: var(--sans-jp);
  color: var(--ink-soft);
  font-size: 0.85rem;
}

.particle-traps {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 0.6rem;
}
.particle-trap {
  background: var(--bg-card);
  border: 1px solid var(--rule);
  border-left: 4px solid var(--amber);
  border-radius: 4px;
  padding: 0.7rem 0.9rem;
}
.particle-trap-head {
  font-family: var(--serif-en);
  font-weight: 600;
  margin-bottom: 0.3rem;
}
.particle-trap-vs {
  color: var(--amber);
  font-style: italic;
  margin: 0 0.3rem;
}
.particle-trap-diff {
  color: var(--ink-soft);
  font-size: 0.88rem;
  margin: 0.2rem 0;
}
.particle-trap-ex {
  font-family: var(--sans-jp);
  font-size: 0.9rem;
  color: var(--ink);
  margin-top: 0.2rem;
}

/* ===================== TRAPS ===================== */
.three-checks {
  background: linear-gradient(135deg, #fdfbf6 0%, #fbe9ef 100%);
  border: 1px solid var(--sakura);
  border-radius: 5px;
  padding: 1rem 1.4rem 1.2rem;
  margin-bottom: 1rem;
}
.three-checks h3 {
  margin: 0 0 0.5rem;
  font-family: var(--serif-en);
  color: var(--sakura);
  font-size: 1.1rem;
}
.three-checks ol {
  margin: 0 0 0.5rem;
  padding-left: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.traps-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.trap-row {
  background: var(--bg-card);
  border: 1px solid var(--rule);
  border-radius: 4px;
  padding: 0.7rem 0.9rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.6rem 1rem;
  align-items: center;
}
@media (max-width: 700px) {
  .trap-row { grid-template-columns: 1fr; }
}
.trap-cell { display: flex; flex-direction: column; gap: 0.2rem; }
.trap-cell .label {
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}
.trap-cell.wrong .label { color: var(--amber); }
.trap-cell.right .label { color: var(--matcha); }
.trap-cell .text {
  font-family: var(--sans-jp);
  font-size: 1rem;
}
.trap-cell.wrong .text { color: var(--amber); text-decoration: line-through; }
.trap-cell.right .text { color: var(--matcha); }
.trap-row .reason {
  grid-column: 1 / -1;
  font-size: 0.85rem;
  color: var(--ink-soft);
  padding-top: 0.4rem;
  border-top: 1px dotted var(--rule);
}

.trap-vocab {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 0.45rem;
}
.trap-v-row {
  background: var(--bg-card);
  border: 1px solid var(--rule-soft);
  border-left: 3px solid var(--amber);
  padding: 0.45rem 0.7rem;
  border-radius: 3px;
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
}
.trap-v-row .text {
  font-family: var(--sans-jp);
  font-size: 1rem;
  color: var(--ink);
}
.trap-v-row .why {
  font-size: 0.82rem;
  color: var(--ink-soft);
}

/* ===================== FOOTER ===================== */
.site-footer {
  max-width: 1180px;
  margin: 0 auto;
  padding: 2rem 1.6rem 3rem;
  border-top: 1px solid var(--rule-soft);
}
.hana-note {
  background: var(--sakura-bg);
  border-left: 3px solid var(--sakura);
  padding: 0.6rem 1rem;
  border-radius: 0 4px 4px 0;
  color: var(--ink);
  font-size: 0.92rem;
}
.hana-note em {
  font-family: var(--serif-en);
  color: var(--sakura);
  font-style: italic;
  margin-right: 0.3rem;
}

/* ===================== RESPONSIVE ===================== */
@media (max-width: 700px) {
  .header-inner { padding: 1rem 1rem 0.6rem; }
  .title-block h1 .jp { font-size: 1.5rem; }
  .title-block h1 .en { font-size: 0.95rem; }
  .header-meta { width: 100%; justify-content: space-between; }
  .site-main { padding: 1rem 1rem 2.5rem; }
  .panel-head { flex-direction: column; align-items: stretch; }
  .verb-conj-result { grid-template-columns: 1fr; }
  .vocab-controls { flex-direction: column; align-items: stretch; }
  .vocab-controls > * { width: 100%; }
  .toggle-group { width: 100%; }
}

/* ===================== PRINT ===================== */
@media print {
  body { background: #fff; }
  .site-header,
  .tab-nav,
  .panel-head .vocab-controls,
  .panel-head .flash-controls,
  .panel-head .quiz-controls,
  .panel-head .grammar-controls,
  .panel-head .verb-controls,
  .lesson-tally,
  .flash-controls,
  .flash-actions,
  .quiz-controls,
  .flash-progress { display: none !important; }
  .panel { display: block !important; page-break-after: always; }
  .vocab-list .vocab-lesson { box-shadow: none; break-inside: avoid; }
  .grammar-card { break-inside: avoid; }
}