/* ============================================================
   R&K Kamus Universal — UI/UX Styles
   Sakura/indigo palette via theme.css CSS vars
   ============================================================ */

* { box-sizing: border-box; }

html, body {
  margin: 0; padding: 0;
  font-family: 'Plus Jakarta Sans', system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color: var(--text, #1f1730);
  background: var(--bg-primary, #fff9f0);
  -webkit-font-smoothing: antialiased;
  line-height: 1.55;
}

[lang="ja"] {
  font-family: 'Noto Sans JP', 'Plus Jakarta Sans', sans-serif;
  font-feature-settings: 'palt';
}

a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--primary-hover); }

/* ============ TOP BAR ============ */
.km-topbar {
  position: sticky; top: 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  gap: 18px;
  padding: 12px 22px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  box-shadow: 0 4px 18px rgba(91, 58, 138, .18);
  color: #fff;
}
.km-logo {
  display: inline-flex; align-items: center; gap: 10px;
  color: #fff; font-weight: 800; font-size: 1.05rem;
}
.km-logo:hover { color: #fff; opacity: .92; }
.km-logo-mark {
  width: 38px; height: 38px;
  display: inline-flex; align-items: center; justify-content: center;
  background: #fff; color: var(--secondary);
  border-radius: 50%;
  font-family: 'Noto Sans JP', sans-serif; font-weight: 900;
  font-size: 1.2rem;
  box-shadow: 0 2px 8px rgba(0, 0, 0, .12);
}
.km-topnav { display: flex; gap: 4px; flex-wrap: wrap; }
.km-nav-link {
  color: rgba(255, 255, 255, .92);
  padding: 8px 14px;
  border-radius: 99px;
  font-size: .92rem;
  font-weight: 600;
  transition: background .15s;
}
.km-nav-link:hover { background: rgba(255, 255, 255, .15); color: #fff; }
.km-nav-link.active { background: rgba(255, 255, 255, .22); color: #fff; }

@media (max-width: 680px) {
  .km-topbar { flex-direction: column; align-items: flex-start; padding: 10px 14px; gap: 8px; }
  .km-logo-text { font-size: .92rem; }
  .km-nav-link { padding: 6px 10px; font-size: .82rem; }
}

/* ============ LAYOUT ============ */
.km-main {
  max-width: 1180px;
  margin: 0 auto;
  padding: 28px 22px 80px;
}

/* ============ HERO + SEARCH ============ */
.km-hero {
  text-align: center;
  padding: 36px 16px 24px;
  background: linear-gradient(135deg, rgba(229, 123, 160, .10), rgba(91, 58, 138, .08));
  border-radius: 26px;
  margin-bottom: 28px;
  position: relative;
  overflow: hidden;
}
.km-hero::before {
  content: '桜'; position: absolute;
  top: -30px; right: -10px;
  font-family: 'Noto Sans JP', sans-serif; font-size: 220px;
  color: rgba(229, 123, 160, .08); font-weight: 900; line-height: 1;
  pointer-events: none; user-select: none;
}
.km-hero-title {
  margin: 0 0 10px;
  font-size: clamp(1.6rem, 5vw, 2.4rem);
  font-weight: 900;
  color: var(--primary-dark);
  letter-spacing: -.02em;
}
.km-hero-sub {
  margin: 0 auto 22px;
  max-width: 620px;
  color: var(--text-secondary);
  font-size: 1.02rem;
}

.km-search-form { max-width: 720px; margin: 0 auto; position: relative; }
.km-search-wrap {
  display: flex; align-items: center;
  background: #fff;
  border-radius: 99px;
  padding: 4px 6px 4px 18px;
  box-shadow: 0 8px 28px rgba(91, 58, 138, .15), 0 0 0 1px rgba(229, 123, 160, .15);
  transition: box-shadow .2s, transform .2s;
}
.km-search-wrap:focus-within {
  box-shadow: 0 12px 36px rgba(91, 58, 138, .22), 0 0 0 3px rgba(229, 123, 160, .35);
  transform: translateY(-1px);
}
.km-search-icon { font-size: 1.15rem; margin-right: 6px; }
.km-search-input {
  flex: 1; min-width: 0;
  border: none; outline: none;
  font: inherit; font-size: 1rem;
  padding: 13px 8px;
  background: transparent;
  color: var(--text);
}
.km-search-input::placeholder { color: var(--text-muted); }
.km-search-clear {
  background: transparent; border: none; color: var(--text-muted);
  font-size: 1.4rem; cursor: pointer; padding: 0 10px;
  text-decoration: none;
}
.km-search-clear:hover { color: var(--error); }
.km-search-btn {
  border: none; cursor: pointer;
  padding: 11px 22px;
  border-radius: 99px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #fff; font-weight: 700;
  font: inherit; font-size: .95rem;
  transition: transform .12s, box-shadow .2s;
  box-shadow: 0 4px 14px rgba(91, 58, 138, .35);
}
.km-search-btn:hover { transform: translateY(-1px); box-shadow: 0 6px 20px rgba(91, 58, 138, .45); }
.km-search-btn:active { transform: translateY(0); }

/* Autocomplete dropdown */
.km-autocomplete {
  position: absolute; top: calc(100% + 6px); left: 12px; right: 12px;
  background: #fff;
  border-radius: 16px;
  box-shadow: 0 12px 40px rgba(31, 23, 48, .18);
  z-index: 50;
  max-height: 360px;
  overflow-y: auto;
  border: 1px solid var(--border-soft);
}
.km-ac-item {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 14px;
  cursor: pointer;
  border-bottom: 1px solid var(--border-soft);
  text-decoration: none; color: inherit;
}
.km-ac-item:last-child { border-bottom: none; }
.km-ac-item:hover, .km-ac-item.is-active {
  background: var(--primary-light);
}
.km-ac-jp { font-family: 'Noto Sans JP', sans-serif; font-size: 1.15rem; font-weight: 700; min-width: 70px; color: var(--text); }
.km-ac-romaji { color: var(--text-secondary); font-size: .9rem; font-style: italic; }
.km-ac-id { color: var(--text-muted); font-size: .88rem; margin-left: auto; text-align: right; max-width: 50%; }

/* Quick chips */
.km-quicks {
  margin-top: 18px;
  display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; align-items: center;
}
.km-quicks-label { color: var(--text-muted); font-size: .88rem; margin-right: 4px; }
.km-quick-chip {
  background: #fff;
  border: 1px solid var(--border);
  padding: 6px 14px;
  border-radius: 99px;
  font-size: .85rem;
  color: var(--text-secondary);
  font-weight: 600;
  transition: all .15s;
}
.km-quick-chip:hover {
  background: var(--secondary);
  color: #fff;
  border-color: var(--secondary);
  transform: translateY(-1px);
}

/* ============ RESULT BAR ============ */
.km-resbar {
  display: flex; justify-content: space-between; align-items: center;
  background: var(--secondary-light);
  border: 1px solid rgba(229, 123, 160, .25);
  padding: 12px 18px;
  border-radius: 14px;
  margin-bottom: 18px;
  font-size: .95rem;
  color: var(--secondary-dark);
}
.km-resbar em { font-style: normal; font-weight: 700; color: var(--primary-dark); }
.km-resbar-clear {
  font-size: .85rem; font-weight: 600;
  color: var(--secondary-dark); text-decoration: underline;
}

/* ============ LAYOUT: sidebar + results ============ */
.km-layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 26px;
}
@media (max-width: 820px) {
  .km-layout { grid-template-columns: 1fr; }
}

/* Sidebar */
.km-sidebar {
  background: #fff;
  border-radius: 18px;
  padding: 18px;
  box-shadow: var(--shadow-sm);
  align-self: start;
  position: sticky; top: 90px;
  max-height: calc(100vh - 110px);
  overflow-y: auto;
  border: 1px solid var(--border-soft);
}
@media (max-width: 820px) {
  .km-sidebar { position: static; max-height: none; }
}
.km-side-title { margin: 2px 4px 14px; font-size: 1rem; font-weight: 800; color: var(--primary-dark); }
.km-cat-list { display: flex; flex-direction: column; gap: 3px; }
.km-cat {
  display: flex; justify-content: space-between; align-items: center;
  gap: 10px;
  padding: 9px 12px;
  border-radius: 10px;
  color: var(--text-secondary);
  font-size: .9rem;
  font-weight: 500;
  text-decoration: none;
  transition: all .12s;
}
.km-cat:hover { background: var(--secondary-light); color: var(--primary-dark); }
.km-cat.active {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #fff; font-weight: 700;
}
.km-cat.active:hover { color: #fff; opacity: .95; }
.km-cat-count {
  background: rgba(91, 58, 138, .1);
  color: var(--primary);
  font-size: .75rem; font-weight: 700;
  padding: 2px 8px; border-radius: 99px;
  flex-shrink: 0;
}
.km-cat.active .km-cat-count {
  background: rgba(255, 255, 255, .25); color: #fff;
}

/* Results grid */
.km-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 14px;
}

/* Word card */
.km-card {
  background: #fff;
  border: 1px solid var(--border-soft);
  border-radius: 14px;
  padding: 16px 14px;
  text-decoration: none;
  color: inherit;
  transition: all .18s;
  position: relative;
  overflow: hidden;
}
.km-card::before {
  content: ''; position: absolute;
  top: 0; left: 0; right: 0; height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  opacity: 0;
  transition: opacity .2s;
}
.km-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 28px rgba(91, 58, 138, .14);
  border-color: var(--secondary);
}
.km-card:hover::before { opacity: 1; }
.km-card-jp {
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 1.5rem; font-weight: 700;
  color: var(--primary-dark);
  line-height: 1.2;
  margin-bottom: 4px;
}
.km-card-romaji {
  color: var(--secondary-dark);
  font-size: .85rem;
  font-style: italic;
  margin-bottom: 6px;
}
.km-card-id {
  color: var(--text);
  font-weight: 600;
  font-size: .92rem;
  margin-bottom: 8px;
}
.km-card-cat {
  font-size: .72rem;
  color: var(--text-muted);
  border-top: 1px dashed var(--border-soft);
  padding-top: 6px;
  margin-top: auto;
}

/* Pagination */
.km-pagi {
  display: flex; justify-content: center; align-items: center; gap: 14px;
  margin-top: 32px;
  font-size: .9rem;
}
.km-pagi-btn {
  background: #fff; border: 1px solid var(--border);
  padding: 9px 18px;
  border-radius: 99px;
  font-weight: 600;
  color: var(--primary);
  transition: all .15s;
}
.km-pagi-btn:hover {
  background: var(--primary); color: #fff; border-color: var(--primary);
}
.km-pagi-info { color: var(--text-muted); font-weight: 600; }

/* Empty state */
.km-empty {
  text-align: center;
  padding: 60px 24px;
  background: #fff;
  border-radius: 18px;
  box-shadow: var(--shadow-sm);
}
.km-empty-icon { font-size: 4rem; margin-bottom: 16px; }
.km-empty h2 { margin: 0 0 10px; color: var(--primary-dark); }
.km-empty p { margin: 0 0 24px; color: var(--text-secondary); }

/* Info block */
.km-info {
  margin-top: 50px;
  padding: 28px 26px;
  background: #fff;
  border-radius: 18px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-soft);
}
.km-info h2 { margin: 0 0 12px; color: var(--primary-dark); font-size: 1.3rem; }
.km-info h3 { margin: 20px 0 10px; color: var(--primary-dark); font-size: 1.05rem; }
.km-info p { margin: 0 0 12px; color: var(--text-secondary); }
.km-info-list { padding-left: 22px; }
.km-info-list li { margin-bottom: 8px; color: var(--text-secondary); }

/* ============ DETAIL PAGE ============ */
.km-detail-wrap { max-width: 880px; }

.km-breadcrumb {
  font-size: .88rem;
  color: var(--text-muted);
  margin-bottom: 18px;
  display: flex; align-items: center; gap: 6px; flex-wrap: wrap;
}
.km-breadcrumb a { color: var(--primary); font-weight: 600; }
.km-breadcrumb span[aria-current] { color: var(--text-secondary); font-weight: 600; }

/* Main hero card */
.km-detail-card {
  background: linear-gradient(135deg, #fff 0%, #fff8fb 100%);
  border-radius: 26px;
  padding: 38px 28px 32px;
  text-align: center;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-soft);
  position: relative;
  overflow: hidden;
  margin-bottom: 28px;
}
.km-detail-card::after {
  content: '桜';
  position: absolute;
  bottom: -60px; right: -30px;
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 220px;
  color: rgba(229, 123, 160, .07);
  font-weight: 900;
  pointer-events: none;
  line-height: 1;
}

.km-detail-meta {
  display: inline-flex; gap: 8px; flex-wrap: wrap; justify-content: center;
  margin-bottom: 22px;
}
.km-chip {
  background: var(--secondary-light);
  color: var(--secondary-dark);
  padding: 5px 14px;
  border-radius: 99px;
  font-size: .8rem;
  font-weight: 700;
}
.km-chip-pos {
  background: var(--primary-light);
  color: var(--primary);
}

.km-jp-big {
  font-family: 'Noto Sans JP', sans-serif;
  font-size: clamp(3rem, 11vw, 5.2rem);
  font-weight: 900;
  margin: 0 0 10px;
  color: var(--primary-dark);
  line-height: 1.1;
  letter-spacing: -.02em;
}
.km-romaji-big {
  font-size: 1.4rem;
  color: var(--secondary-dark);
  font-style: italic;
  font-weight: 600;
  margin-bottom: 14px;
}
.km-arrow {
  font-size: 1.6rem;
  color: var(--secondary);
  margin: 6px 0;
  animation: kmBounce 1.6s infinite;
}
@keyframes kmBounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(6px); }
}
.km-id-big {
  font-size: clamp(1.4rem, 5vw, 2rem);
  font-weight: 700;
  color: var(--text);
  background: linear-gradient(135deg, var(--secondary-light) 0%, var(--accent-light) 100%);
  display: inline-block;
  padding: 10px 28px;
  border-radius: 16px;
  margin-bottom: 26px;
  box-shadow: 0 4px 14px rgba(229, 123, 160, .2);
}

.km-detail-actions {
  display: flex; gap: 10px; justify-content: center; flex-wrap: wrap;
}

/* Buttons */
.km-btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 6px;
  padding: 11px 20px;
  border-radius: 99px;
  border: none;
  font: inherit;
  font-weight: 700;
  font-size: .92rem;
  cursor: pointer;
  text-decoration: none;
  transition: all .15s;
  white-space: nowrap;
}
.km-btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #fff;
  box-shadow: 0 4px 14px rgba(91, 58, 138, .3);
}
.km-btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 22px rgba(91, 58, 138, .42);
  color: #fff;
}
.km-btn-ghost {
  background: #fff;
  color: var(--primary);
  border: 1.5px solid var(--border);
}
.km-btn-ghost:hover {
  background: var(--primary-light); border-color: var(--primary);
}
.km-btn-mini { padding: 6px 12px; font-size: .82rem; }
.km-btn-cta { padding: 14px 32px; font-size: 1rem; }
.km-btn.is-playing {
  background: linear-gradient(135deg, var(--success), #7bc18d);
  animation: kmPulse 1s ease infinite;
}
@keyframes kmPulse {
  0%, 100% { box-shadow: 0 4px 14px rgba(93, 176, 116, .3); }
  50% { box-shadow: 0 4px 20px rgba(93, 176, 116, .6); }
}

/* Section blocks */
.km-section {
  background: #fff;
  border-radius: 20px;
  padding: 24px 22px;
  box-shadow: var(--shadow-sm);
  margin-bottom: 20px;
  border: 1px solid var(--border-soft);
}
.km-section-title {
  margin: 0 0 16px;
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--primary-dark);
}

/* Example card */
.km-example-card {
  display: flex; gap: 14px; align-items: center;
  background: linear-gradient(135deg, var(--accent-light) 0%, var(--secondary-light) 100%);
  padding: 18px 20px;
  border-radius: 14px;
  border-left: 4px solid var(--accent);
}
.km-example-text {
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 1.15rem;
  line-height: 1.6;
  color: var(--text);
  margin: 0;
  flex: 1;
}

/* Conjugation grid */
.km-conj-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 12px;
}
.km-conj-cell {
  background: var(--bg-soft);
  border-radius: 12px;
  padding: 12px 14px;
  border: 1px solid var(--border-soft);
}
.km-conj-label {
  font-size: .75rem;
  color: var(--primary);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .04em;
  margin-bottom: 4px;
}
.km-conj-jp {
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 4px;
}
.km-conj-sub {
  font-size: .78rem;
  color: var(--text-muted);
}

/* Formal/casual */
.km-formal-card {
  display: flex; align-items: center; gap: 18px;
  justify-content: space-around;
  padding: 20px 16px;
  background: var(--bg-soft);
  border-radius: 14px;
}
.km-formal-card > div { text-align: center; }
.km-mini-label {
  font-size: .75rem;
  color: var(--text-muted);
  font-weight: 700;
  text-transform: uppercase;
  margin-bottom: 4px;
}
.km-mini-jp {
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 1.5rem; font-weight: 700;
  color: var(--primary-dark);
}
.km-arrow-r {
  font-size: 1.8rem; color: var(--secondary);
}

/* Related grid */
.km-related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 10px;
}

/* CTA */
.km-cta {
  text-align: center;
  padding: 32px 24px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  border-radius: 22px;
  color: #fff;
  margin-top: 24px;
  margin-bottom: 22px;
}
.km-cta-title { font-size: 1.4rem; font-weight: 800; margin-bottom: 8px; }
.km-cta-desc { font-size: 1rem; opacity: .92; margin-bottom: 18px; }
.km-cta .km-btn-cta {
  background: #fff; color: var(--primary);
  box-shadow: 0 6px 18px rgba(0, 0, 0, .2);
}
.km-cta .km-btn-cta:hover { background: var(--accent-light); color: var(--primary-dark); }

/* Back link */
.km-back { text-align: center; margin-top: 20px; }

/* Footer */
.km-footer {
  background: var(--primary-dark);
  color: rgba(255, 255, 255, .8);
  padding: 30px 20px 22px;
  text-align: center;
  margin-top: 40px;
}
.km-foot-row {
  display: flex; flex-wrap: wrap; justify-content: center; gap: 18px;
  margin-bottom: 14px;
}
.km-foot-row a {
  color: rgba(255, 255, 255, .9);
  font-size: .9rem;
  font-weight: 600;
}
.km-foot-row a:hover { color: var(--secondary-light); }
.km-foot-copy { font-size: .82rem; opacity: .7; }

/* Toast notification (for copy/share feedback) */
.km-toast {
  position: fixed;
  bottom: 30px; left: 50%;
  transform: translateX(-50%) translateY(120%);
  background: var(--primary-dark);
  color: #fff;
  padding: 12px 22px;
  border-radius: 99px;
  font-size: .92rem;
  font-weight: 600;
  box-shadow: 0 8px 28px rgba(0, 0, 0, .25);
  z-index: 1000;
  transition: transform .35s cubic-bezier(.34, 1.56, .64, 1);
  pointer-events: none;
}
.km-toast.show {
  transform: translateX(-50%) translateY(0);
}