/* Hoshino marketing site. Mirrors the app's design system: indigo accent,
   zinc neutrals, flat lists with hairline dividers, generous whitespace. */

:root {
  color-scheme: light dark;

  --accent: #4f46e5;          /* fills, the star, decoration */
  --accent-text: #4f46e5;     /* links, furigana, small accent text */
  --accent-fill: #4f46e5;     /* primary button background */
  --accent-soft: rgba(79, 70, 229, 0.08);
  --accent-border: rgba(79, 70, 229, 0.25);

  --bg: #fafafa;
  --bg-card: #ffffff;
  --bg-elevated: #f4f4f5;
  --text: #09090b;
  --text-secondary: #71717a;
  --text-tertiary: #a1a1aa;
  --text-inverse: #ffffff;
  --border: #e4e4e7;
  --border-strong: #d4d4d8;
  --divider: rgba(0, 0, 0, 0.06);

  --n5: #15803d; --n5-soft: rgba(22, 163, 74, 0.10);
  --n4: #1d4ed8; --n4-soft: rgba(37, 99, 235, 0.10);
  --n3: #b45309; --n3-soft: rgba(217, 119, 6, 0.10);
  --n2: #c2410c; --n2-soft: rgba(234, 88, 12, 0.10);
  --n1: #b91c1c; --n1-soft: rgba(220, 38, 38, 0.10);

  --font-latin: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-jp: "Noto Sans JP", "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif;

  --r-sm: 8px;
  --r-md: 12px;
  --r-lg: 16px;
  --r-full: 9999px;

  --measure: 60rem;
}

@media (prefers-color-scheme: dark) {
  :root {
    --accent: #6366f1;
    --accent-text: #818cf8;
    --accent-fill: #4f46e5;
    --accent-soft: rgba(99, 102, 241, 0.15);
    --accent-border: rgba(99, 102, 241, 0.35);

    --bg: #09090b;
    --bg-card: #18181b;
    --bg-elevated: #27272a;
    --text: #fafafa;
    --text-secondary: #a1a1aa;
    --text-tertiary: #71717a;
    --text-inverse: #ffffff;
    --border: #27272a;
    --border-strong: #3f3f46;
    --divider: rgba(255, 255, 255, 0.08);

    --n5: #5cc98e; --n5-soft: rgba(92, 201, 142, 0.14);
    --n4: #60a5fa; --n4-soft: rgba(96, 165, 250, 0.14);
    --n3: #fbbf24; --n3-soft: rgba(251, 191, 36, 0.14);
    --n2: #fb923c; --n2-soft: rgba(251, 146, 60, 0.14);
    --n1: #f87171; --n1-soft: rgba(248, 113, 113, 0.14);
  }
}

/* ---------- Base ---------- */

*, *::before, *::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; }
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-latin);
  font-size: 1rem;
  line-height: 1.6;
  overflow-x: hidden;
}

:lang(ja), .jp {
  font-family: var(--font-jp);
}

h1, h2, h3, h4 {
  margin: 0;
  line-height: 1.2;
  letter-spacing: -0.01em;
  font-weight: 700;
}

h1 { font-size: clamp(2rem, 5vw, 3rem); letter-spacing: -0.02em; }
h2 { font-size: clamp(1.5rem, 3vw, 1.875rem); }
h3 { font-size: 1.125rem; font-weight: 600; }

p { margin: 0 0 1rem; }
p:last-child { margin-bottom: 0; }

a {
  color: var(--accent-text);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.15em;
}
a:hover { text-decoration-thickness: 2px; }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

ul, ol { margin: 0 0 1rem; padding-left: 1.25rem; }
li { margin-bottom: 0.35rem; }

.muted { color: var(--text-secondary); }
.small { font-size: 0.875rem; }
.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.wrap {
  width: 100%;
  max-width: var(--measure);
  margin: 0 auto;
  padding: 0 1.25rem;
}

@media (min-width: 48rem) {
  .wrap { padding: 0 2rem; }
}

/* ---------- Header ---------- */

.site-header {
  border-bottom: 1px solid var(--border);
  background: var(--bg);
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 3.75rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text);
  text-decoration: none;
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
}
.brand:hover { text-decoration: none; }

/* The app icon, rounded like it sits on a home screen. */
.brand-icon {
  width: 1.6em;
  height: 1.6em;
  border-radius: 22%;
  flex: none;
}

.site-nav ul {
  display: flex;
  gap: 0.25rem;
  list-style: none;
  margin: 0;
  padding: 0;
}
.site-nav li { margin: 0; }
.site-nav a,
.site-nav .nav-soon {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 0.75rem;
  border-radius: var(--r-sm);
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9375rem;
  font-weight: 500;
  min-height: 2.75rem;
}
.site-nav a:hover { color: var(--text); background: var(--accent-soft); }
.site-nav a[aria-current="page"] { color: var(--text); }
.site-nav .nav-soon { cursor: default; }

.tag {
  display: inline-block;
  padding: 0.05rem 0.45rem;
  border-radius: 6px;
  font-size: 0.6875rem;
  font-weight: 600;
  line-height: 1.5;
  background: var(--bg-elevated);
  color: var(--text-secondary);
  border: 1px solid var(--border);
}

@media (max-width: 30rem) {
  .site-nav a, .site-nav .nav-soon { padding: 0.5rem 0.5rem; font-size: 0.875rem; }
}

/* ---------- Sections ---------- */

.section {
  padding: 3.5rem 0;
  border-bottom: 1px solid var(--border);
}
.section:last-of-type { border-bottom: 0; }

@media (min-width: 48rem) {
  .section { padding: 5rem 0; }
}

.section-head {
  max-width: 40rem;
  margin-bottom: 2rem;
}
.section-head h2 { margin-bottom: 0.75rem; }
.section-head p { color: var(--text-secondary); font-size: 1.0625rem; }

.eyebrow {
  display: block;
  margin-bottom: 0.5rem;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--accent-text);
}

/* ---------- Hero ---------- */

.hero {
  padding: 4rem 0 3.5rem;
  border-bottom: 1px solid var(--border);
}

@media (min-width: 48rem) {
  .hero { padding: 6rem 0 5rem; }
}

.hero h1 { max-width: 42rem; margin-bottom: 1.25rem; }
.hero .lede {
  max-width: 38rem;
  font-size: 1.125rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
}
@media (min-width: 48rem) {
  .hero .lede { font-size: 1.25rem; }
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.fine {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

/* ---------- Buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 2.75rem;
  padding: 0.6rem 1.1rem;
  border-radius: var(--r-md);
  border: 1px solid transparent;
  font: inherit;
  font-size: 0.9375rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: background-color 120ms ease, border-color 120ms ease;
}
.btn:hover { text-decoration: none; }

.btn-primary {
  background: var(--accent-fill);
  color: var(--text-inverse);
}
.btn-primary:hover { background: #4338ca; }

.btn-secondary {
  background: var(--bg-card);
  color: var(--text);
  border-color: var(--border-strong);
}
.btn-secondary:hover { background: var(--accent-soft); border-color: var(--accent-border); }

.btn[aria-disabled="true"] {
  background: var(--bg-elevated);
  color: var(--text-secondary);
  border-color: var(--border);
  cursor: not-allowed;
}
.btn[aria-disabled="true"]:hover { background: var(--bg-elevated); border-color: var(--border); }

/* ---------- Demo ---------- */

.demo {
  max-width: 40rem;
}

.search-label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.search-box {
  position: relative;
}
.search-box .icon {
  position: absolute;
  left: 0.9rem;
  top: 50%;
  transform: translateY(-50%);
  width: 1.25rem;
  height: 1.25rem;
  color: var(--text-tertiary);
  pointer-events: none;
}
.search-input {
  width: 100%;
  min-height: 3rem;
  padding: 0.7rem 1rem 0.7rem 2.75rem;
  border-radius: var(--r-lg);
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text);
  font: inherit;
  font-size: 1.0625rem;
  font-family: var(--font-latin), var(--font-jp);
}
.search-input::placeholder { color: var(--text-tertiary); }
.search-input:focus { border-color: var(--accent); outline: 2px solid var(--accent); outline-offset: 1px; }

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 1rem 0 0;
  padding: 0;
  list-style: none;
}
.chips li { margin: 0; }
.chip {
  display: inline-flex;
  align-items: center;
  min-height: 2.5rem;
  padding: 0.35rem 0.9rem;
  border-radius: var(--r-full);
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text);
  font: inherit;
  font-family: var(--font-jp);
  font-size: 1.0625rem;
  cursor: pointer;
}
.chip:hover { background: var(--accent-soft); border-color: var(--accent-border); }

.demo-status {
  min-height: 1.5rem;
  margin: 1rem 0 0.25rem;
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.results {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--divider);
}
.results:empty { border-top: 0; }
.results li { margin: 0; }

.result {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 4.5rem;
  padding: 0.75rem 0.25rem;
  border-bottom: 1px solid var(--divider);
}
.result-main {
  display: flex;
  align-items: center;
  gap: 1rem;
  min-width: 0;
}
.result-word {
  display: inline-flex;
  flex-direction: column;
  align-items: flex-start;
  flex: none;
  font-family: var(--font-jp);
  line-height: 1;
}
.result-word .furi {
  display: block;
  min-height: 0.8rem;
  font-size: 0.75rem;
  line-height: 1;
  color: var(--accent-text);
  margin-bottom: 0.15rem;
  white-space: nowrap;
}
.result-word .head {
  display: block;
  font-size: 1.625rem;
  font-weight: 500;
  line-height: 1.15;
  white-space: nowrap;
}
.result-gloss {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}
.result-meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.35rem;
  flex: none;
}

.pill {
  display: inline-block;
  padding: 0.1rem 0.5rem;
  border-radius: 6px;
  font-size: 0.6875rem;
  font-weight: 600;
  line-height: 1.6;
  white-space: nowrap;
}
.pill-common { color: var(--accent-text); background: var(--accent-soft); }
.pill-n5 { color: var(--n5); background: var(--n5-soft); }
.pill-n4 { color: var(--n4); background: var(--n4-soft); }
.pill-n3 { color: var(--n3); background: var(--n3-soft); }
.pill-n2 { color: var(--n2); background: var(--n2-soft); }
.pill-n1 { color: var(--n1); background: var(--n1-soft); }

.demo-note {
  margin-top: 1.25rem;
  font-size: 0.875rem;
  color: var(--text-secondary);
}

@media (max-width: 30rem) {
  .result { flex-direction: column; align-items: flex-start; gap: 0.5rem; }
  .result-meta { justify-content: flex-start; }
}

/* ---------- Feature grid ---------- */

.features {
  display: grid;
  gap: 2rem 3rem;
  grid-template-columns: 1fr;
  margin: 0;
  padding: 0;
  list-style: none;
}
.features li { margin: 0; }

@media (min-width: 48rem) {
  .features { grid-template-columns: 1fr 1fr; }
}

.feature .icon-wrap {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: var(--r-sm);
  background: var(--accent-soft);
  color: var(--accent-text);
  margin-bottom: 0.9rem;
}
.feature .icon { width: 1.25rem; height: 1.25rem; }
.feature h3 { margin-bottom: 0.5rem; }
.feature p { color: var(--text-secondary); }

.icon {
  width: 1.5rem;
  height: 1.5rem;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  fill: none;
  flex: none;
}

.strip {
  margin-top: 3rem;
  padding: 1.5rem 0 0;
  border-top: 1px solid var(--divider);
  max-width: 44rem;
}
.strip h3 { margin-bottom: 0.5rem; }
.strip p { color: var(--text-secondary); }

/* ---------- Why (three points) ---------- */

.points {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: 1fr;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: point;
}
.points li { margin: 0; padding-top: 1rem; border-top: 1px solid var(--divider); }
.points li::before {
  counter-increment: point;
  content: counter(point, decimal-leading-zero);
  display: block;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--accent-text);
  margin-bottom: 0.5rem;
  letter-spacing: 0.04em;
}
.points h3 { margin-bottom: 0.4rem; }
.points p { color: var(--text-secondary); }

@media (min-width: 48rem) {
  .points { grid-template-columns: repeat(3, 1fr); gap: 2.5rem; }
}

/* ---------- Download and roadmap ---------- */

.download-grid {
  display: grid;
  gap: 2.5rem;
  grid-template-columns: 1fr;
}
@media (min-width: 48rem) {
  .download-grid { grid-template-columns: 1.1fr 1fr; gap: 4rem; }
}

.download h3 { margin-bottom: 0.5rem; }
.download .actions { margin-top: 1.25rem; margin-bottom: 0.75rem; }

.roadmap {
  margin: 0;
}
.roadmap dt {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0 0 0.5rem;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-secondary);
}
.roadmap dt::before {
  content: "";
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background: var(--text-tertiary);
  flex: none;
}
.roadmap dt.shipped::before { background: var(--n5); }
.roadmap dt.progress::before { background: var(--accent); }
.roadmap dt.next::before { background: var(--n3); }
.roadmap dd {
  margin: 0 0 1.25rem;
  padding: 0;
}
.roadmap dd ul {
  list-style: none;
  margin: 0;
  padding: 0;
}
.roadmap dd li {
  margin: 0;
  padding: 0.45rem 0;
  border-top: 1px solid var(--divider);
  font-size: 0.9375rem;
}
.roadmap dd li:last-child { border-bottom: 1px solid var(--divider); }
.roadmap dd li .muted { font-size: 0.875rem; }

/* ---------- Prose pages (About) ---------- */

.prose {
  max-width: 44rem;
}
.prose h2 { margin-bottom: 1rem; }
.prose p, .prose li { font-size: 1.0625rem; }
.prose .signoff {
  margin-top: 1.5rem;
  font-weight: 600;
}
.page-title { padding-top: 3.5rem; }
.page-title h1 { margin-bottom: 0.5rem; }

.sources {
  list-style: none;
  margin: 0;
  padding: 0;
}
.sources > li {
  margin: 0;
  padding: 1.25rem 0;
  border-top: 1px solid var(--divider);
}
.sources > li:last-child { border-bottom: 1px solid var(--divider); }
.sources h3 { margin-bottom: 0.25rem; }
.sources .source-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  margin-bottom: 0.5rem;
  font-size: 0.9375rem;
  color: var(--text-secondary);
}
.sources .licence {
  display: inline-block;
  padding: 0.05rem 0.5rem;
  border-radius: 6px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-secondary);
}
.sources blockquote {
  margin: 0.5rem 0;
  padding-left: 0.9rem;
  border-left: 2px solid var(--accent-border);
  color: var(--text-secondary);
  font-size: 0.9375rem;
}
.sources p { font-size: 1rem; }

/* ---------- Footer ---------- */

.site-footer {
  border-top: 1px solid var(--border);
  padding: 2.5rem 0 3rem;
  font-size: 0.875rem;
  color: var(--text-secondary);
}
.site-footer .wrap {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.site-footer .foot-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 1.25rem;
}
.site-footer .brand { font-size: 1rem; }
.site-footer nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
  list-style: none;
  margin: 0;
  padding: 0;
}
.site-footer nav li { margin: 0; }
.site-footer a { color: var(--text-secondary); }
.site-footer a:hover { color: var(--text); }