:root {
  --ink: #1f2a24;
  --muted: #68736d;
  --line: #dfe8e2;
  --surface: #ffffff;
  --surface-soft: #f7faf8;
  --canvas: #f2f7f4;
  --primary: #2f6b52;
  --primary-strong: #24543f;
  --primary-soft: #e7f1eb;
  --blue: #416b8c;
  --blue-soft: #eaf1f7;
  --amber: #a46d22;
  --amber-soft: #faf1e2;
  --rose: #9a5660;
  --rose-soft: #f8ecee;
  --shadow-sm: 0 4px 18px rgba(31, 42, 36, 0.06);
  --shadow-md: 0 12px 34px rgba(31, 42, 36, 0.10);
  --radius-sm: 14px;
  --radius-md: 20px;
  --radius-lg: 28px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body.app-shell {
  min-height: 100vh;
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 10% 0%, rgba(122, 171, 143, 0.14), transparent 28rem),
    radial-gradient(circle at 92% 12%, rgba(116, 154, 184, 0.11), transparent 24rem),
    var(--canvas) !important;
  font-family: "Noto Sans JP", "Roboto", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  letter-spacing: 0.01em;
}

button,
a,
input,
select,
textarea {
  font: inherit;
}

button {
  min-height: 44px;
}

button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 3px solid rgba(47, 107, 82, 0.32);
  outline-offset: 3px;
}

.app-nav {
  position: sticky;
  top: 0;
  z-index: 40;
  padding: 12px 18px;
  border-bottom: 1px solid rgba(223, 232, 226, 0.92);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.app-nav__inner {
  width: min(1120px, 100%);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.app-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.app-brand__mark {
  width: 38px;
  height: 38px;
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  border-radius: 13px;
  color: white;
  background: var(--primary);
  font-size: 21px;
  font-weight: 700;
  box-shadow: 0 7px 18px rgba(47, 107, 82, 0.22);
}

.app-brand__text {
  display: flex;
  flex-direction: column;
  min-width: 0;
  line-height: 1.15;
}

.app-brand__name {
  font-size: 19px;
  font-weight: 800;
  letter-spacing: 0.02em;
}

.app-brand__sub {
  margin-top: 3px;
  color: var(--muted);
  font-size: 11px;
  font-weight: 600;
}

.app-nav__actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.app-nav__button {
  min-height: 42px;
  padding: 9px 14px;
  border: 1px solid var(--line);
  border-radius: 12px;
  color: #34443b !important;
  background: #fff !important;
  font-size: 14px;
  font-weight: 700;
  transition: transform .18s ease, border-color .18s ease, background .18s ease, box-shadow .18s ease;
}

.app-nav__button:hover {
  transform: translateY(-1px);
  border-color: #b8cdc0;
  background: var(--surface-soft) !important;
  box-shadow: var(--shadow-sm);
}

.app-main {
  width: 100%;
}

.screen-shell {
  padding: 30px 18px 52px;
}

.screen-container {
  width: min(960px, 100%);
  margin: 0 auto;
}

.home-hero {
  position: relative;
  overflow: hidden;
  margin-bottom: 22px;
  padding: 34px 34px 30px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.90);
  box-shadow: var(--shadow-sm);
}

.home-hero::after {
  content: "";
  position: absolute;
  right: -70px;
  top: -90px;
  width: 250px;
  height: 250px;
  border: 1px solid rgba(47, 107, 82, 0.10);
  border-radius: 50%;
  background: radial-gradient(circle, rgba(47, 107, 82, 0.06), transparent 68%);
  pointer-events: none;
}

.home-hero__eyebrow {
  position: relative;
  z-index: 1;
  margin: 0 0 10px;
  color: var(--primary);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: .11em;
  text-transform: uppercase;
}

.home-hero__title {
  position: relative;
  z-index: 1;
  margin: 0;
  max-width: 680px;
  color: var(--ink);
  font-size: clamp(30px, 6vw, 50px);
  line-height: 1.2;
  font-weight: 850;
  letter-spacing: .01em;
}

.home-hero__lead {
  position: relative;
  z-index: 1;
  margin: 12px 0 0;
  max-width: 620px;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.8;
}

#updateInfo {
  position: relative;
  z-index: 1;
  margin: 18px 0 0 !important;
  color: #7b8580 !important;
  font-size: 12px !important;
  line-height: 1.6;
}

.home-widgets {
  margin-top: 18px;
}

#streakDisplay > *,
#dailyChallengeDisplay > * {
  min-height: 100%;
  border: 1px solid var(--line) !important;
  border-radius: var(--radius-md) !important;
  box-shadow: none !important;
}

#recommendationWidget > div {
  border: 0 !important;
  border-radius: var(--radius-md) !important;
  background: linear-gradient(135deg, #365f4d, #4c7461) !important;
  box-shadow: var(--shadow-sm) !important;
}

#recommendationWidget button {
  min-height: 50px;
  border: 1px solid rgba(255, 255, 255, 0.18);
}

.section-heading {
  margin: 32px 0 14px;
  color: var(--ink);
  font-size: 20px;
  font-weight: 800;
}

#categoriesContainer {
  gap: 18px !important;
}

#categoriesContainer > div {
  --grade-accent: var(--primary);
  --grade-soft: var(--primary-soft);
  padding: 24px !important;
  border: 1px solid var(--line) !important;
  border-radius: var(--radius-md) !important;
  background: rgba(255, 255, 255, 0.94) !important;
  box-shadow: var(--shadow-sm) !important;
}

#categoriesContainer > div:nth-child(2) {
  --grade-accent: var(--blue);
  --grade-soft: var(--blue-soft);
}

#categoriesContainer > div:nth-child(3) {
  --grade-accent: var(--amber);
  --grade-soft: var(--amber-soft);
}

#categoriesContainer > div > h2 {
  margin: 0 0 16px !important;
  color: var(--ink) !important;
  font-size: 24px !important;
  line-height: 1.35;
}

#categoriesContainer > div > h2::after {
  content: "";
  display: block;
  width: 34px;
  height: 4px;
  margin-top: 10px;
  border-radius: 999px;
  background: var(--grade-accent);
}

#categoriesContainer button {
  position: relative;
  min-height: 72px;
  padding: 15px 18px !important;
  border: 1.5px solid color-mix(in srgb, var(--grade-accent) 32%, white) !important;
  border-radius: 15px !important;
  color: var(--ink) !important;
  background: var(--grade-soft) !important;
  box-shadow: none !important;
  text-align: left;
  transition: transform .16s ease, border-color .16s ease, box-shadow .16s ease, background .16s ease !important;
}

#categoriesContainer button:hover {
  transform: translateY(-2px);
  border-color: var(--grade-accent) !important;
  background: #fff !important;
  box-shadow: var(--shadow-sm) !important;
}

#categoriesContainer button > div:first-child {
  gap: 10px;
}

#categoriesContainer button .text-sm {
  color: var(--muted) !important;
  font-weight: 600;
}

.quiz-card,
.result-card {
  width: min(720px, 100%);
  margin: 0 auto;
  padding: 26px !important;
  border: 1px solid var(--line) !important;
  border-radius: var(--radius-lg) !important;
  background: rgba(255, 255, 255, 0.96) !important;
  box-shadow: var(--shadow-md) !important;
}

.quiz-toolbar {
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
}

.secondary-button,
#returnHomeBtn,
#returnHomeFromResultBtn {
  border: 1px solid var(--line) !important;
  border-radius: 12px !important;
  color: #445149 !important;
  background: #fff !important;
  box-shadow: none !important;
}

.secondary-button:hover,
#returnHomeBtn:hover,
#returnHomeFromResultBtn:hover {
  background: var(--surface-soft) !important;
}

#questionProgress,
#currentScore {
  color: var(--ink) !important;
  font-size: 15px !important;
}

#questionText {
  color: var(--ink) !important;
  font-size: clamp(21px, 4vw, 28px) !important;
  line-height: 1.65;
}

#questionImage {
  max-height: 42vh;
  object-fit: contain;
  border: 1px solid var(--line);
  border-radius: 16px !important;
  background: #fff;
}

#speakButton,
#hintButton {
  min-width: 48px;
  min-height: 48px;
  border: 1px solid var(--line) !important;
  border-radius: 13px !important;
  color: var(--ink) !important;
  background: var(--surface-soft) !important;
}

#choicesContainer {
  gap: 12px !important;
}

#choicesContainer button,
.choice-button {
  min-height: 60px;
  padding: 14px 18px !important;
  border: 1.5px solid #cfdcd4 !important;
  border-radius: 15px !important;
  color: var(--ink) !important;
  background: #fff !important;
  box-shadow: none !important;
  font-size: 17px !important;
  font-weight: 750 !important;
  text-align: left;
  transition: transform .16s ease, border-color .16s ease, background .16s ease, box-shadow .16s ease !important;
}

#choicesContainer button:hover:not(:disabled),
.choice-button:hover:not(:disabled) {
  transform: translateY(-1px) !important;
  border-color: var(--primary) !important;
  background: var(--primary-soft) !important;
  box-shadow: var(--shadow-sm) !important;
}

#feedbackMessage {
  border-radius: 15px !important;
  line-height: 1.7;
}

#nextQuestionBtn,
#retryBtn {
  min-height: 52px;
  border-radius: 14px !important;
  background: var(--primary) !important;
}

#nextQuestionBtn:hover,
#retryBtn:hover {
  background: var(--primary-strong) !important;
}

#shareButton {
  min-height: 52px;
  border-radius: 14px !important;
  background: var(--blue) !important;
}

.result-card h2 {
  color: var(--ink) !important;
}

.result-summary {
  border: 1px solid var(--line);
  border-radius: 18px !important;
  background: var(--surface-soft) !important;
}

#dashboardContent,
#settingsContent,
#weaknessContent {
  width: min(1120px, 100%);
  margin: 0 auto;
}

#dashboardContent > div,
#settingsContent > div,
#weaknessContent > div {
  color: var(--ink);
}

#dashboardContent .bg-white,
#settingsContent .bg-white,
#weaknessContent .bg-white {
  border-color: var(--line) !important;
  border-radius: var(--radius-md) !important;
  box-shadow: var(--shadow-sm) !important;
}

#dashboardContent button,
#settingsContent button,
#weaknessContent button {
  min-height: 44px;
  border-radius: 12px !important;
}

.fixed.inset-0 {
  padding: 18px !important;
  background: rgba(20, 31, 25, 0.48) !important;
  backdrop-filter: blur(6px);
}

.fixed.inset-0 > div {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 22px !important;
  box-shadow: 0 24px 70px rgba(20, 31, 25, 0.24);
}

.fixed.inset-0 > div > h2 {
  color: var(--ink);
  font-size: 24px !important;
}

.fixed.inset-0 button {
  min-height: 48px;
  border-radius: 13px !important;
}

.fireworks-container {
  height: 110px;
}

@media (max-width: 700px) {
  .app-nav {
    padding: 10px 12px;
  }

  .app-brand__sub {
    display: none;
  }

  .app-brand__mark {
    width: 34px;
    height: 34px;
    border-radius: 11px;
  }

  .app-brand__name {
    font-size: 16px;
  }

  .app-nav__actions {
    gap: 5px;
  }

  .app-nav__button {
    min-height: 40px;
    padding: 8px 10px;
    font-size: 12px;
  }

  .screen-shell {
    padding: 18px 12px 36px;
  }

  .home-hero {
    padding: 24px 20px;
    border-radius: 22px;
  }

  .home-hero::after {
    right: -16px;
    top: 8px;
    font-size: 62px;
  }

  .home-hero__lead {
    font-size: 14px;
  }

  #categoriesContainer {
    grid-template-columns: 1fr !important;
  }

  #categoriesContainer > div {
    padding: 19px !important;
  }

  .quiz-card,
  .result-card {
    padding: 20px !important;
    border-radius: 22px !important;
  }

  #questionText {
    font-size: 21px !important;
  }

  #choicesContainer button,
  .choice-button {
    min-height: 58px;
    font-size: 16px !important;
  }
}

@media (max-width: 460px) {
  .app-brand__text {
    display: none;
  }

  .app-nav__actions {
    width: 100%;
    justify-content: flex-end;
  }

  .app-nav__button {
    flex: 1 1 0;
    max-width: 104px;
    padding-inline: 7px;
  }
}

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

  .firework {
    display: none;
  }
}


/* 回答状態は視覚的に明確に保つ */
#choicesContainer button.bg-green-500 {
  color: #ffffff !important;
  border-color: #2f6b52 !important;
  background: #3f7a59 !important;
}

#choicesContainer button.bg-red-500 {
  color: #ffffff !important;
  border-color: #8a4650 !important;
  background: #a95c66 !important;
}

#choicesContainer button.bg-blue-500 {
  color: #ffffff !important;
  border-color: #355d7c !important;
  background: #4d7899 !important;
}

#choicesContainer button.bg-gray-200 {
  color: #6f7873 !important;
  border-color: #d7dfda !important;
  background: #eef2ef !important;
}

#feedbackMessage.bg-green-100 {
  color: #28563f !important;
  border: 1px solid #c9dfd1;
  background: #edf6f0 !important;
}

#feedbackMessage.bg-red-100 {
  color: #7c4048 !important;
  border: 1px solid #e7cbd0;
  background: #fbf0f2 !important;
}


/* Lucide icon system */
.icon-label {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.icon-label--center {
  justify-content: center;
}

.icon-label svg,
.app-nav__button svg,
.mode-button svg,
.primary-compact-button svg,
.secondary-action-button svg {
  width: 1.05rem;
  height: 1.05rem;
  flex: 0 0 auto;
}

.app-brand__mark svg {
  width: 1.3rem;
  height: 1.3rem;
}

/* Category and quiz controls */
.category-status-icon {
  display: inline-flex;
  align-items: center;
  color: var(--grade-accent);
}

.category-status-icon svg {
  width: 1rem;
  height: 1rem;
}

.mode-button {
  width: 100%;
  min-height: 50px;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 13px;
  color: var(--ink);
  background: var(--surface);
  font-weight: 700;
  text-align: left;
  transition: background .16s ease, border-color .16s ease, transform .16s ease, box-shadow .16s ease;
}

.mode-button:hover {
  transform: translateY(-1px);
  border-color: #b8cdc0;
  background: var(--surface-soft);
  box-shadow: var(--shadow-sm);
}

.feedback-title {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
}

.feedback-title svg {
  width: 1.1rem;
  height: 1.1rem;
}

.feedback-explanation {
  display: inline-flex;
  align-items: flex-start;
  gap: .5rem;
  font-size: 1rem;
  font-weight: 600;
}

.feedback-explanation svg {
  width: 1rem;
  height: 1rem;
  margin-top: .2rem;
  flex: 0 0 auto;
}

/* Home metric cards */
.home-metric-card {
  min-height: 100%;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  color: var(--ink);
  background: rgba(255, 255, 255, 0.96);
  box-shadow: var(--shadow-sm);
}

.home-metric-card__icon {
  width: 44px;
  height: 44px;
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  border-radius: 13px;
  color: var(--primary);
  background: var(--primary-soft);
}

.home-metric-card__icon svg {
  width: 1.25rem;
  height: 1.25rem;
}

.home-metric-card__label {
  color: var(--muted);
  font-size: .78rem;
  font-weight: 700;
}

.home-metric-card__value {
  margin-top: 2px;
  font-size: 1.75rem;
  line-height: 1.2;
  font-weight: 800;
}

.home-metric-card__subvalue {
  margin-top: 2px;
  font-size: 1.2rem;
  font-weight: 800;
}

.home-metric-card--challenge {
  align-items: flex-start;
}

.challenge-complete {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 12px;
  color: #28563f;
  background: #edf6f0;
  font-size: .9rem;
}

.primary-compact-button {
  min-height: 42px;
  padding: 9px 13px;
  border-radius: 11px;
  color: #fff;
  background: var(--primary);
  font-weight: 700;
}

.primary-compact-button:hover {
  background: var(--primary-strong);
}

/* Page headings and dashboard */
.page-title,
.section-title {
  color: var(--ink);
  font-weight: 800;
}

.page-title {
  font-size: clamp(1.6rem, 4vw, 2rem);
}

.section-title {
  margin-bottom: 1rem;
  font-size: 1.18rem;
}

.page-title svg,
.section-title svg {
  width: 1.25em;
  height: 1.25em;
  color: var(--primary);
}

.dashboard-stat {
  position: relative;
  overflow: hidden;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 17px;
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}

.dashboard-stat > svg {
  width: 1.15rem;
  height: 1.15rem;
  margin-bottom: 14px;
  color: var(--primary);
}

.dashboard-stat__label {
  color: var(--muted);
  font-size: .8rem;
  font-weight: 700;
}

.dashboard-stat__value {
  margin-top: 3px;
  color: var(--ink);
  font-size: clamp(1.75rem, 4vw, 2.3rem);
  line-height: 1.15;
  font-weight: 800;
}

.badge-icon {
  width: 46px;
  height: 46px;
  margin: 0 auto 10px;
  display: grid;
  place-items: center;
  border-radius: 14px;
  color: #8b6a1f;
  background: #fff6d8;
}

.badge-icon svg {
  width: 1.35rem;
  height: 1.35rem;
}

/* Recommendation cards: neutral full-border cards, no border-left accent */
.recommendation-card {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 14px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--surface);
  box-shadow: none;
  transition: border-color .16s ease, box-shadow .16s ease, transform .16s ease;
}

.recommendation-card:hover {
  transform: translateY(-1px);
  border-color: #c3d3c8;
  box-shadow: var(--shadow-sm);
}

.recommendation-card__icon {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  color: var(--primary);
  background: var(--primary-soft);
}

.recommendation-card__icon svg {
  width: 1.15rem;
  height: 1.15rem;
}

.recommendation-card__body {
  min-width: 0;
}

.recommendation-card__meta {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 4px;
}

.recommendation-card__title {
  color: var(--ink);
  font-weight: 750;
}

.recommendation-card__chip {
  padding: 3px 8px;
  border-radius: 999px;
  color: var(--muted);
  background: var(--surface-soft);
  font-size: .7rem;
  font-weight: 700;
}

.recommendation-card__description {
  color: var(--muted);
  font-size: .88rem;
  line-height: 1.65;
}

.secondary-action-button {
  min-height: 40px;
  padding: 9px 12px;
  border: 1px solid var(--line);
  border-radius: 11px;
  color: var(--primary);
  background: #fff;
  font-size: .82rem;
  font-weight: 750;
  white-space: nowrap;
}

.secondary-action-button:hover {
  border-color: #b8cdc0;
  background: var(--primary-soft);
}

.recommendation-inline-icon {
  display: inline-flex;
  align-items: center;
}

.recommendation-inline-icon svg {
  width: 1rem;
  height: 1rem;
}

.score-level-icon {
  display: inline-flex;
}

.score-level-icon svg {
  width: 1.35rem;
  height: 1.35rem;
}

.status-icon {
  display: inline-flex;
  align-items: center;
}

.status-icon svg {
  width: 1rem;
  height: 1rem;
}

.status-legend {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 5px 8px;
  border-radius: 999px;
  font-size: .72rem;
  font-weight: 700;
}

.status-legend svg {
  width: .9rem;
  height: .9rem;
}

.rank-pill {
  width: 26px;
  height: 26px;
  display: inline-grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  background: #fff;
  font-size: .75rem;
  font-weight: 800;
}

.empty-state-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  display: grid;
  place-items: center;
  border-radius: 20px;
  color: var(--primary);
  background: var(--primary-soft);
}

.empty-state-icon svg {
  width: 1.8rem;
  height: 1.8rem;
}

/* Notifications */
.app-notification {
  min-width: min(340px, calc(100vw - 2rem));
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 15px;
  color: var(--ink);
  background: rgba(255, 255, 255, .98);
  box-shadow: var(--shadow-md);
  overflow: hidden;
}

.app-notification__inner {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: start;
  gap: 10px;
  padding: 13px 14px;
}

.app-notification__icon {
  width: 30px;
  height: 30px;
  display: grid;
  place-items: center;
  border-radius: 9px;
  color: var(--blue);
  background: var(--blue-soft);
}

.app-notification__icon svg,
.app-notification__close svg {
  width: 1rem;
  height: 1rem;
}

.app-notification--success .app-notification__icon {
  color: var(--primary);
  background: var(--primary-soft);
}

.app-notification--warning .app-notification__icon {
  color: var(--amber);
  background: var(--amber-soft);
}

.app-notification--error .app-notification__icon {
  color: var(--rose);
  background: var(--rose-soft);
}

.app-notification__message {
  padding-top: 4px;
  font-size: .88rem;
  line-height: 1.6;
  font-weight: 650;
}

.app-notification__close {
  min-width: 30px;
  min-height: 30px;
  display: grid;
  place-items: center;
  border-radius: 9px;
  color: var(--muted);
}

.app-notification__close:hover {
  background: var(--surface-soft);
}

@media (max-width: 700px) {
  .recommendation-card {
    grid-template-columns: auto 1fr;
  }

  .recommendation-card .secondary-action-button {
    grid-column: 1 / -1;
    width: 100%;
    justify-content: center;
  }

  .home-metric-card {
    padding: 15px;
  }
}