/* Ryori landing — styles (v3 scroll-driven page colour)
   One page-wide canvas colour on <html>, driven by js/motion.js.
   Sections carry no background of their own. Live theme vars
   (--fg, --accent, --cta-*, --card-*, …) are written on <html>
   only when a value changes. */

/* Live theme vars are registered so the ~200ms foreground flip can transition
   (browsers without @property just switch instantly). JS writes them on <html>. */
@property --fg         { syntax: "<color>"; inherits: true; initial-value: #FFFFFF; }
@property --fg-muted   { syntax: "<color>"; inherits: true; initial-value: rgba(255,255,255,0.78); }
@property --fg-line    { syntax: "<color>"; inherits: true; initial-value: rgba(255,255,255,0.22); }
@property --accent     { syntax: "<color>"; inherits: true; initial-value: #FFEF05; }
@property --hot        { syntax: "<color>"; inherits: true; initial-value: #CC0033; }
@property --logo       { syntax: "<color>"; inherits: true; initial-value: #CC0033; }
@property --cta-bg     { syntax: "<color>"; inherits: true; initial-value: #FFEF05; }
@property --cta-fg     { syntax: "<color>"; inherits: true; initial-value: #000000; }
@property --card-bg    { syntax: "<color>"; inherits: true; initial-value: rgba(0,0,0,0.22); }
@property --card-fg    { syntax: "<color>"; inherits: true; initial-value: #FFFFFF; }
@property --card-muted { syntax: "<color>"; inherits: true; initial-value: rgba(255,255,255,0.85); }
@property --card-line  { syntax: "<color>"; inherits: true; initial-value: rgba(255,255,255,0.25); }
@property --card-accent{ syntax: "<color>"; inherits: true; initial-value: #FFEF05; }

:root {
  --red: #CC0033;
  --violet: #7100FC;
  --yellow: #FFEF05;
  --cyan: #0098CC;
  --wine: #77283C;
  --black: #000000;
  --white: #FFFFFF;

  --space-1: 8px;
  --space-2: 16px;
  --space-3: 24px;
  --space-4: 32px;
  --space-5: 48px;
  --space-6: 64px;
  --space-7: 96px;

  /* DISPLAY FONT — single swap point. Current: Orbitron (OFL, self-hosted).
     To swap: replace the DISPLAY FONT SLOT @font-face blocks in css/fonts.css
     and put the new family first here. */
  --font-display: "Orbitron", "Archivo Black", Impact, sans-serif;
  --font-body: "Archivo", system-ui, -apple-system, sans-serif;

  --radius: 8px;
  --max-width: 1120px;
  --tap-min: 44px;
  --flip: 200ms ease-out;

  /* Default = hero (black canvas, white text). JS overwrites these per frame (only on change). */
  --bg: #000000;
  --fg: #FFFFFF;
  --fg-muted: rgba(255,255,255,0.78);
  --fg-line: rgba(255,255,255,0.22);
  --accent: #FFEF05;
  --hot: #CC0033;
  --logo: #CC0033;
  --cta-bg: #FFEF05;
  --cta-fg: #000000;
  --card-bg: rgba(0,0,0,0.22);
  --card-fg: #FFFFFF;
  --card-muted: rgba(255,255,255,0.85);
  --card-line: rgba(255,255,255,0.25);
  --card-accent: #FFEF05;

  background-color: #000000; /* the one page-wide canvas; JS sets it every frame it changes */
  transition:
    --fg var(--flip), --fg-muted var(--flip), --fg-line var(--flip),
    --accent var(--flip), --hot var(--flip), --logo var(--flip),
    --cta-bg var(--flip), --cta-fg var(--flip),
    --card-bg var(--flip), --card-fg var(--flip),
    --card-muted var(--flip), --card-line var(--flip), --card-accent var(--flip);
}

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

html { scroll-behavior: smooth; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  /* colour snaps per section; a quick 200ms fade softens the snap */
  :root {
    transition:
      background-color 200ms ease-out,
      --fg 200ms, --fg-muted 200ms, --fg-line 200ms,
      --accent 200ms, --hot 200ms, --logo 200ms,
      --cta-bg 200ms, --cta-fg 200ms,
      --card-bg 200ms, --card-fg 200ms,
      --card-muted 200ms, --card-line 200ms, --card-accent 200ms;
  }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.55;
  background: transparent; /* canvas colour comes from <html> */
  color: var(--fg);
  -webkit-font-smoothing: antialiased;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
a:focus-visible, button:focus-visible, summary:focus-visible {
  outline: 3px solid var(--fg);
  outline-offset: 3px;
}

.container {
  width: 100%;
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: var(--space-2);
}
@media (min-width: 768px) {
  .container { padding-inline: var(--space-4); }
}

/* Sections carry NO colour of their own */
.section {
  padding-block: var(--space-5);
  position: relative;
  overflow: clip visible;
  background: transparent;
}
@supports not (overflow: clip) {
  .section { overflow-x: hidden; }
}
@media (min-width: 768px) {
  .section { padding-block: var(--space-6); }
}

.section > .container { position: relative; z-index: 1; } /* content above the motif */

.section__label {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: var(--space-1);
  color: var(--accent);
}
.section__title {
  margin: 0 0 var(--space-2);
  font-family: var(--font-display);
  font-size: clamp(1.65rem, 3.8vw, 2.5rem);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.section__intro {
  margin: 0 0 var(--space-4);
  max-width: 40rem;
  color: var(--fg-muted);
}

.btn-primary, .btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-1);
  min-height: var(--tap-min);
  padding: 12px 24px;
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.2;
  cursor: pointer;
  border: 2px solid transparent;
  text-align: center;
  transition: transform 200ms ease, box-shadow 200ms ease;
}
.btn-primary {
  background: var(--cta-bg);
  color: var(--cta-fg);
  border-color: var(--cta-bg);
}
.btn-secondary {
  background: transparent;
  color: var(--accent);
  border-color: var(--accent);
}
.btn-primary:hover, .btn-secondary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 0 rgba(0,0,0,0.25);
}
@media (prefers-reduced-motion: reduce) {
  .btn-primary:hover, .btn-secondary:hover { transform: none; box-shadow: none; }
}
.btn-row { display: flex; flex-wrap: wrap; gap: var(--space-2); }

.card {
  background: var(--card-bg);
  color: var(--card-fg);
  border: 1px solid var(--card-line);
  border-radius: var(--radius);
  padding: var(--space-3);
  transition: transform 200ms ease, box-shadow 200ms ease;
}
.card:hover { transform: translateY(-4px); box-shadow: 0 12px 32px rgba(0,0,0,0.2); }
@media (prefers-reduced-motion: reduce) {
  .card:hover { transform: none; box-shadow: none; }
}
.card__title {
  margin: 0 0 var(--space-1);
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 800;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}
.card__body { margin: 0; color: var(--card-muted); font-size: 0.9375rem; }

.placeholder-box {
  border: 2px dashed currentColor;
  border-radius: var(--radius);
  padding: var(--space-3);
  text-align: center;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--card-fg);
  background: var(--card-bg);
}

/* ===== Nav (live bg = canvas colour at 92%, set by JS) ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(0,0,0,0.92);
  border-bottom: 1px solid var(--fg-line);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  color: var(--fg);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  min-height: 64px;
  padding-block: var(--space-1);
}
.brand {
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
  min-height: var(--tap-min);
  min-width: var(--tap-min);
  padding-block: 6px;
  color: var(--logo);
}
.brand__logo {
  display: block;
  height: 24px;
  width: auto;
  aspect-ratio: 746.1 / 215.5;
  fill: currentColor;
}
@media (min-width: 768px) {
  .brand__logo { height: 32px; }
}
.footer__brand { margin-bottom: var(--space-2); }
.footer__brand .brand__logo { height: 32px; }
@media (min-width: 768px) {
  .footer__brand .brand__logo { height: 40px; }
}
.brand:focus-visible {
  outline: 3px solid var(--fg);
  outline-offset: 4px;
  border-radius: 4px;
}
.nav__links {
  display: none;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: var(--space-3);
}
.nav__links a {
  font-size: 0.875rem;
  font-weight: 600;
  min-height: var(--tap-min);
  display: inline-flex;
  align-items: center;
  color: var(--fg);
}
.nav__links a:hover {
  text-decoration: underline;
  text-underline-offset: 4px;
}
.nav__cta { flex-shrink: 0; }
.nav__toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: var(--tap-min);
  height: var(--tap-min);
  border: 2px solid var(--fg-line);
  border-radius: var(--radius);
  background: transparent;
  color: inherit;
  cursor: pointer;
  font-size: 1.25rem;
}
.nav__mobile {
  display: none;
  flex-direction: column;
  gap: var(--space-1);
  padding: 0 var(--space-2) var(--space-2);
  border-top: 1px solid var(--fg-line);
}
.nav__mobile.is-open { display: flex; }
.nav__mobile a {
  min-height: var(--tap-min);
  display: flex;
  align-items: center;
  padding-inline: var(--space-1);
  font-weight: 600;
}
@media (min-width: 900px) {
  .nav__links { display: flex; }
  .nav__toggle { display: none; }
  .nav__mobile { display: none !important; }
}

/* ===== 1. Hero ===== */
.hero {
  min-height: calc(100vh - 64px);
  display: flex;
  align-items: center;
}
.hero__grid {
  display: grid;
  gap: var(--space-5);
  align-items: center;
  width: 100%;
}
@media (min-width: 900px) {
  .hero__grid { grid-template-columns: 1.1fr 0.9fr; gap: var(--space-6); }
}
.hero__eyebrow {
  display: inline-block;
  margin-bottom: var(--space-2);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  border: 2px solid var(--hot);
  border-radius: 999px;
  padding: 6px 14px;
}
.hero__headline {
  margin: 0 0 var(--space-2);
  font-family: var(--font-display);
  font-size: clamp(2.15rem, 6.2vw, 3.75rem);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}
.hero__headline .dot { color: var(--hot); }
.hero__sub {
  margin: 0 0 var(--space-3);
  font-size: clamp(1.125rem, 2.5vw, 1.5rem);
  font-weight: 700;
  color: var(--accent);
}
.hero__body {
  margin: 0 0 var(--space-4);
  max-width: 36rem;
  color: var(--fg-muted);
}

/* Phone mock (self-coloured object; reads on any canvas) */
.phone-mock {
  justify-self: center;
  width: 100%;
  max-width: 280px;
  position: relative;
  z-index: 2;
}
.phone-frame {
  --phone-bezel: 8px;          /* uniform bezel: 8px desktop, 6px mobile */
  --phone-radius: 32px;
  --phone-border: 3px;
  border: var(--phone-border) solid var(--white);
  border-radius: var(--phone-radius);
  padding: var(--phone-bezel);
  background: #111;            /* only the thin bezel ring shows */
  box-shadow: 0 0 0 6px var(--red), 0 24px 48px rgba(0,0,0,0.35);
  aspect-ratio: 9 / 19;
  display: flex;
  flex-direction: column;
  gap: 0;
  position: relative;
  overflow: hidden;            /* clip screen + overlay notch to the frame */
}
@media (max-width: 767px) {
  .phone-frame { --phone-bezel: 6px; }
}
.phone-notch {
  position: absolute;
  top: var(--phone-bezel);
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;                  /* overlays the white screen */
  width: 96px; height: 16px; background: var(--black);
  border-radius: 0 0 12px 12px;
  pointer-events: none;
}
.phone-screen {
  flex: 1;
  min-height: 0;
  width: 100%;
  position: relative;
  overflow: hidden;
  /* screen radius = frame outer radius − bezel (inner curve follows the bezel) */
  border-radius: calc(var(--phone-radius) - var(--phone-bezel));
  background: #FFFFFF;
}
.phone-screen__poster, .phone-screen__poster img, .phone-screen__video {
  position: absolute; inset: 0; width: 100%; height: 100%; display: block;
  object-fit: cover; object-position: top center; }
.phone-screen__video { z-index: 1; }
@media (prefers-reduced-motion: reduce) { .phone-screen__video { display: none; } }   /* poster only, even with no JS */

/* Background motif: circle-R mark, large + faint (5%), tinted by --fg. Max one per section, none in the hero. */
.motif-clip { position: absolute; inset: 0; z-index: 0; overflow: hidden; pointer-events: none; }
.motif { position: absolute; pointer-events: none; user-select: none; width: clamp(16rem, 52vw, 34rem);
         aspect-ratio: 1; opacity: 0.04; color: var(--fg); } /* 4%: constellation LINE_ALPHA is 0.18 (>8% SPEC threshold) */
.motif__mark { display: block; width: 100%; height: 100%; background: currentColor;
  -webkit-mask: url("../img/brand/ryori-mark-currentColor.svg") center / contain no-repeat;
          mask: url("../img/brand/ryori-mark-currentColor.svg") center / contain no-repeat; }
.motif--what    { left: -18%; bottom: -4%;  width: clamp(14rem, 44vw, 28rem); }
.motif--what .motif__mark    { transform: rotate(18deg); }
.motif--why     { right: -10%; top: -8%;    width: clamp(12rem, 36vw, 24rem); }
.motif--why .motif__mark     { transform: rotate(-24deg); }
.motif--closing { left: 58%; bottom: -14%;  width: clamp(14rem, 40vw, 26rem); }
.motif--closing .motif__mark { transform: rotate(8deg); }
@media (max-width: 767px) { .motif--what { left: -42%; } .motif--why { right: -34%; top: -4%; } }

/* ===== 2. Tagline — extra block so the yellow moment has room to hold ===== */
.tagline-band {
  padding-block: var(--space-7);
  min-height: 56vh;
  display: flex;
  align-items: center;
  text-align: center;
  background: transparent;
  border-block: 0;
}
.tagline-band > .container { width: 100%; }
.tagline-band__text {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 4.4vw, 2.75rem);
  line-height: 1.25;
  font-weight: 900;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

/* ===== 3. What ===== */
.meaning-grid { display: grid; gap: var(--space-3); }
@media (min-width: 700px) {
  .meaning-grid { grid-template-columns: 1fr 1fr; gap: var(--space-4); }
}
.card__icon { display: block; width: 40px; height: 40px; margin-bottom: var(--space-1); color: var(--card-accent);
  fill: none; stroke: currentColor; stroke-width: 2.5; stroke-linecap: round; stroke-linejoin: round; }
.mission-block, .vision-block {
  margin-top: var(--space-3); padding-top: var(--space-3);
  border-top: 2px solid var(--card-line);
}
.mission-block__label, .vision-block__label {
  font-size: 0.75rem; font-weight: 700; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--card-accent); margin: 0 0 var(--space-1);
}

/* ===== 4. Why ===== */
.benefit-grid { display: grid; gap: var(--space-2); }
@media (min-width: 600px) {
  .benefit-grid { grid-template-columns: 1fr 1fr; gap: var(--space-3); }
}
@media (min-width: 1000px) {
  .benefit-grid { grid-template-columns: repeat(4, 1fr); }
}
.benefit-card__icon {
  width: 40px; height: 40px; border-radius: var(--radius);
  margin-bottom: var(--space-2);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-display); font-size: 1.125rem; font-weight: 900;
  background: var(--yellow); color: var(--black);
  border: 2px solid var(--black);
}
.why__cta { margin-top: var(--space-4); text-align: center; }

/* ===== 5. Closing ===== */
.closing__headline {
  margin: 0 0 var(--space-3);
  font-family: var(--font-display);
  font-size: clamp(1.65rem, 4.2vw, 2.75rem);
  font-weight: 900;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  text-align: center;
}
.closing__body {
  margin: 0 auto var(--space-4);
  max-width: 40rem;
  text-align: center;
  color: var(--fg-muted);
}
.closing__placeholders {
  display: grid; gap: var(--space-2); margin-bottom: var(--space-4);
}
@media (min-width: 700px) {
  .closing__placeholders { grid-template-columns: 1fr 1fr 1fr; }
}
.closing__cta { text-align: center; }

/* ===== 6. FAQ ===== */
.faq__list { display: flex; flex-direction: column; gap: var(--space-1); margin-bottom: var(--space-4); }
.accordion-item {
  border: 1px solid var(--card-line);
  border-radius: var(--radius);
  background: var(--card-bg);
  color: var(--card-fg);
  overflow: hidden;
}
.accordion-item[open] { border-color: var(--card-accent); }
.accordion-item summary {
  list-style: none; cursor: pointer;
  min-height: var(--tap-min);
  padding: var(--space-2) var(--space-3);
  display: flex; align-items: center; justify-content: space-between; gap: var(--space-2);
  font-weight: 700; font-size: 0.9375rem;
}
.accordion-item summary::-webkit-details-marker { display: none; }
.accordion-item summary::after {
  content: "+"; font-size: 1.35rem; font-weight: 400; color: var(--card-accent); flex-shrink: 0;
}
.accordion-item[open] summary::after { content: "−"; }
.accordion-item__body {
  padding: var(--space-2) var(--space-3) var(--space-3);
  color: var(--card-muted);
  font-size: 0.9375rem;
  border-top: 1px solid var(--card-line);
  animation: faqOpen 250ms ease;
}
@keyframes faqOpen {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: translateY(0); }
}
@media (prefers-reduced-motion: reduce) {
  .accordion-item__body { animation: none; }
}
.faq__footer {
  display: flex; flex-direction: column; align-items: flex-start; gap: var(--space-2);
  padding: var(--space-3);
  border: 2px solid var(--card-accent);
  border-radius: var(--radius);
  background: var(--card-bg);
  color: var(--card-fg);
}
@media (min-width: 600px) {
  .faq__footer { flex-direction: row; align-items: center; justify-content: space-between; }
}
.faq__footer p { margin: 0; color: var(--card-fg); font-size: 0.9375rem; }
.faq__footer .btn-secondary { color: var(--card-fg); border-color: var(--card-fg); }

/* ===== 7. Footer ===== */
.site-footer {
  border-top: 4px solid var(--hot);
  padding-block: var(--space-5) var(--space-4);
  background: transparent;
}
.footer__grid {
  display: flex; flex-direction: column; gap: var(--space-3);
}
@media (min-width: 700px) {
  .footer__grid { flex-direction: row; justify-content: space-between; align-items: flex-start; }
}
.footer__affiliate { font-size: 0.8125rem; color: var(--fg-muted); }
.footer__affiliate strong {
  display: block; font-size: 0.75rem; letter-spacing: 0.1em;
  text-transform: uppercase; margin-bottom: 4px; color: var(--accent);
}
.footer__links {
  display: flex; flex-wrap: wrap; gap: var(--space-2) var(--space-3);
  list-style: none; margin: 0; padding: 0;
}
.footer__links a {
  font-size: 0.875rem; font-weight: 600; color: var(--fg-muted);
  min-height: var(--tap-min); display: inline-flex; align-items: center;
}
.footer__links a:hover { color: var(--fg); text-decoration: underline; }
.footer__copy {
  margin: var(--space-3) 0 0; padding-top: var(--space-3);
  border-top: 1px solid var(--fg-line);
  font-size: 0.8125rem; color: var(--fg-muted);
}

/* Keep anchored sections clear of the sticky 64px header */
[id] { scroll-margin-top: 72px; }

/* Skip link: invisible until keyboard-focused */
.skip-link {
  position: absolute; left: var(--space-2); top: -100px; z-index: 300;
  background: var(--yellow); color: var(--black);
  padding: 10px 16px; border-radius: var(--radius); font-weight: 700;
  border: 2px solid var(--black);
}
.skip-link:focus { top: var(--space-2); }

/* Mobile guard: never allow horizontal scroll from decorative overflow */
html, body { overflow-x: clip; }

/* ===== No-JS fallback: solid hifi colours per section ===== */
.no-js .site-header { background-color: rgba(0,0,0,0.92); }
.no-js .hero,
.no-js .site-footer { background: #000; }
.no-js .tagline-band {
  background: var(--yellow);
  --fg: #000; --fg-muted: rgba(0,0,0,0.75); color: #000;
}
.no-js .what { background: var(--violet); }
.no-js .why {
  background: var(--cyan);
  --fg: #000; --fg-muted: rgba(0,0,0,0.75); --fg-line: rgba(0,0,0,0.2);
  --accent: #000; --cta-bg: #000; --cta-fg: #FFF;
  --card-bg: rgba(255,255,255,0.92); --card-fg: #000;
  --card-muted: rgba(0,0,0,0.75); --card-line: rgba(0,0,0,0.15);
  --card-accent: #CC0033;
  color: #000;
}
.no-js .closing { background: var(--red); --hot: #FFEF05; }
.no-js .faq { background: var(--wine); }