/* ==========================================================================
   01 · Ronin Almond: variant tokens (ui-designer)
   Token VALUE overrides only; names come from shared/css/design-system.css.

   Art palette: canvas #F4F2F1 · almond #D9BAA1 · charcoal #2A2420
                slate-teal #2FB7C2 (decor only on light) · magenta = tiny signal

   WCAG 2.x contrast checked (text / background):
   LIGHT
     #2A2420 text-primary   on #F4F2F1 bg-primary    13.72:1  AA/AAA
     #2A2420 text-primary   on #EDE3DA bg-secondary  12.10:1  AA/AAA
     #2A2420 text-primary   on #FBF9F7 bg-elevated  ~14.9:1   AA/AAA
     #2A2420 charcoal       on #D9BAA1 almond chip    8.38:1  AA/AAA
     #5C524B text-secondary on #F4F2F1                6.81:1  AA
     #5C524B text-secondary on #EDE3DA                6.01:1  AA
     #5C524B text-secondary on #FFFFFF                7.60:1  AA
     #17707A primary (teal) on #F4F2F1                5.18:1  AA (links, mono labels)
     #17707A primary (teal) on #EDE3DA                4.57:1  AA
     #17707A primary (teal) on #FFFFFF                5.78:1  AA
     #FFFFFF on #17707A  primary button               5.78:1  AA
     #FFFFFF on #125A62  primary button :hover        7.88:1  AA/AAA
     #C2187A accent (magenta) on #F4F2F1              5.08:1  AA (only dots, never text)
     #2FB7C2 glow on #F4F2F1                          2.17:1  decoration ONLY, never text
   DARK
     #F4F2F1 text-primary   on #141110 / #1D1916 / #26201C   16.84 / 15.64 / 14.41:1
     #B9ADA3 text-secondary on #141110 / #1D1916 / #26201C    8.56 /  7.96 /  7.33:1
     #2FB7C2 primary (teal) on #141110 / #1D1916 / #26201C    7.76 /  7.21 /  6.64:1
     #0E1416 on #2FB7C2  primary button               7.67:1  AA/AAA
     #0E1416 on #5FD3DC  primary button :hover       10.47:1  AA/AAA
     #D9BAA1 almond text    on #141110               10.28:1  AA/AAA
     #F0479E accent         on #141110                5.46:1  AA
     #5FD3DC focus ring     on #141110               10.59:1  (>= 3:1 non-text)
   ========================================================================== */

:root {
  color-scheme: light;

  /* Surfaces & text */
  --bg-primary: #F4F2F1;      /* canvas = art background, image edge disappears */
  --bg-secondary: #EDE3DA;    /* almond-washed band (metrics, trust bar) */
  --bg-elevated: #FBF9F7;     /* cards, quote panel: barely lifted off canvas */
  --text-primary: #2A2420;    /* charcoal */
  --text-secondary: #5C524B;
  --border-color: #DCCBBD;    /* almond hairline (decorative, 1px) */

  /* Brand */
  --primary-color: #17707A;   /* AA-safe slate-teal for text + buttons on light */
  --primary-contrast: #FFFFFF;
  --secondary-color: #D9BAA1; /* almond: rules, brackets, chips, quote mark */
  --accent-color: #C2187A;    /* magenta: live dot + active ring dot only */
  --glow-color: #2FB7C2;      /* raw teal: leader lines, ring dots, glows */
  --focus-ring: #17707A;

  /* Shadows: warm, low and soft; glow is teal, tight */
  --shadow-sm: 0 1px 2px rgb(42 36 32 / 0.06);
  --shadow-md: 0 8px 24px -10px rgb(42 36 32 / 0.16);
  --shadow-lg: 0 28px 56px -20px rgb(42 36 32 / 0.22);
  --shadow-glow: 0 0 0 1px rgb(47 183 194 / 0.40), 0 0 12px rgb(47 183 194 / 0.22);

  /* Shape: crisp, near-square (precision instrument, not bubbly SaaS) */
  --radius-sm: 2px;
  --radius-md: 4px;
  --radius-lg: 8px;

  /* Art placeholder until ronin-warrior-light.png lands */
  --art-placeholder-from: #F4F2F1;
  --art-placeholder-to: #E6D3C3;
  --art-silhouette: rgb(42 36 32 / 0.10);
}

[data-theme="dark"] {
  color-scheme: dark;
  --bg-primary: #141110;
  --bg-secondary: #1D1916;
  --bg-elevated: #26201C;
  --text-primary: #F4F2F1;
  --text-secondary: #B9ADA3;
  --border-color: #3A322C;
  --primary-color: #2FB7C2;
  --primary-contrast: #0E1416;
  --secondary-color: #D9BAA1;
  --accent-color: #F0479E;
  --glow-color: #2FB7C2;
  --focus-ring: #5FD3DC;
  --shadow-sm: 0 1px 2px rgb(0 0 0 / 0.40);
  --shadow-md: 0 8px 24px -10px rgb(0 0 0 / 0.60);
  --shadow-lg: 0 28px 56px -20px rgb(0 0 0 / 0.70);
  --shadow-glow: 0 0 0 1px rgb(47 183 194 / 0.45), 0 0 14px rgb(47 183 194 / 0.28);
  --art-placeholder-from: #1D1916;
  --art-placeholder-to: #2A3638;
  --art-silhouette: rgb(47 183 194 / 0.14);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --bg-primary: #141110;
    --bg-secondary: #1D1916;
    --bg-elevated: #26201C;
    --text-primary: #F4F2F1;
    --text-secondary: #B9ADA3;
    --border-color: #3A322C;
    --primary-color: #2FB7C2;
    --primary-contrast: #0E1416;
    --secondary-color: #D9BAA1;
    --accent-color: #F0479E;
    --glow-color: #2FB7C2;
    --focus-ring: #5FD3DC;
    --shadow-sm: 0 1px 2px rgb(0 0 0 / 0.40);
    --shadow-md: 0 8px 24px -10px rgb(0 0 0 / 0.60);
    --shadow-lg: 0 28px 56px -20px rgb(0 0 0 / 0.70);
    --shadow-glow: 0 0 0 1px rgb(47 183 194 / 0.45), 0 0 14px rgb(47 183 194 / 0.28);
    --art-placeholder-from: #1D1916;
    --art-placeholder-to: #2A3638;
    --art-silhouette: rgb(47 183 194 / 0.14);
  }
}

/* === Variant layout (builder) === */

/* ---------- Shared bits ---------- */
.section-head { display: grid; gap: var(--space-3); justify-items: start; margin-bottom: var(--space-10); max-width: 40rem; }
.section-head h2, .cta h2 { font-size: var(--text-2xl); letter-spacing: -0.01em; }
.eyebrow--teal { color: var(--primary-color); }
.cta-row { display: flex; flex-wrap: wrap; justify-content: center; gap: var(--space-3); }
.btn { font-size: var(--text-sm); }
.btn--secondary, .btn--ghost { border-color: var(--border-color); color: var(--text-primary); background: transparent; }
.btn--secondary:hover, .btn--ghost:hover { border-color: var(--primary-color); background: transparent; color: var(--text-primary); }
.btn--primary:hover { background: #125A62; }
.btn--primary:active { background: #0F4C53; box-shadow: none; }
[data-theme="dark"] .btn--primary:hover { background: #5FD3DC; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .btn--primary:hover { background: #5FD3DC; } }

/* Almond corner brackets (top-left + bottom-right) */
.bracket { position: relative; }
.bracket::before, .bracket::after {
  content: ""; position: absolute; width: 12px; height: 12px;
  border: 0 solid var(--secondary-color);
  transition: border-color var(--duration-fast) ease;
  pointer-events: none;
}
.bracket::before { top: -1px; left: -1px; border-top-width: 1px; border-left-width: 1px; }
.bracket::after { bottom: -1px; right: -1px; border-bottom-width: 1px; border-right-width: 1px; }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  isolation: isolate;
  padding-top: var(--space-12);
  overflow: hidden;
}
.hero::before { /* faint 64px instrument grid */
  content: ""; position: absolute; inset: 0; z-index: -1;
  background:
    linear-gradient(var(--border-color) 1px, transparent 1px) 50% 0 / 64px 64px,
    linear-gradient(90deg, var(--border-color) 1px, transparent 1px) 50% 0 / 64px 64px;
  opacity: 0.4;
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 55%, #000 20%, transparent 75%);
          mask-image: radial-gradient(ellipse 70% 60% at 50% 55%, #000 20%, transparent 75%);
}
.hero__copy { display: grid; justify-items: center; gap: var(--space-5); text-align: center; }
.hero h1 { max-width: 16ch; }
.hero .lead { max-width: 52ch; color: var(--text-secondary); font-size: var(--text-lg); }
.hero .badge { border-radius: var(--radius-pill); }

.hero__stage { position: relative; margin-top: var(--space-8); }
.hero__art { max-width: 22rem; margin-inline: auto; margin-top: calc(-1 * var(--space-4)); }
.hero__art > .art { position: absolute; inset: 0; }
.art--dark { display: none; }
[data-theme="dark"] .art--light { display: none; }
[data-theme="dark"] .art--dark { display: block; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .art--light { display: none; }
  :root:not([data-theme="light"]) .art--dark { display: block; }
}
/* Fade the art's lower edge into the next band */
.hero__art::after {
  content: ""; position: absolute; inset: auto 0 0; height: 12%;
  background: linear-gradient(transparent, var(--bg-primary));
  pointer-events: none;
}
.hero__art.is-missing::after { /* placeholder label, keep shared look */
  inset: auto auto var(--space-3) var(--space-3); height: auto; background: var(--bg-primary);
}

/* HUD notes: 2×2 chips on mobile */
.hud-notes {
  display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--space-2);
  margin: var(--space-4) 0 var(--space-12);
}
.hud-note a {
  display: grid; gap: 2px; min-height: 44px; height: 100%;
  padding: var(--space-2) var(--space-3);
  background: color-mix(in srgb, var(--bg-elevated) 85%, transparent);
  -webkit-backdrop-filter: blur(4px); backdrop-filter: blur(4px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: border-color var(--duration-fast) ease, box-shadow var(--duration-base) var(--ease-out);
}
.hud-note__label { font-family: var(--font-mono); font-size: var(--text-xs); letter-spacing: var(--tracking-mono); text-transform: uppercase; color: var(--primary-color); font-weight: 500; }
.hud-note__value { font-size: var(--text-sm); color: var(--text-secondary); }
.hud-note a:hover, .hud-note a:focus-visible { border-color: var(--primary-color); }

/* ---------- Trust bar ---------- */
.trust { background: var(--bg-secondary); border-block: 1px solid var(--border-color); padding-block: var(--space-8); }
.trust__inner { display: grid; gap: var(--space-5); justify-items: center; text-align: center; }
.trust__logos { display: flex; flex-wrap: wrap; justify-content: center; gap: var(--space-3) var(--space-8); }
.trust__logos li { font-family: var(--font-display); font-weight: 600; font-size: var(--text-lg); color: var(--text-secondary); opacity: 0.8; transition: opacity var(--duration-fast) ease; }
.trust__logos li:hover { opacity: 1; }

/* ---------- Capabilities ---------- */
.cap-grid { display: grid; gap: var(--space-4); }
.card { border-radius: var(--radius-md); transition: transform var(--duration-base) var(--ease-out), box-shadow var(--duration-base) var(--ease-out), border-color var(--duration-fast) ease; }
.card:hover { transform: translateY(-2px); border-color: var(--border-color); box-shadow: var(--shadow-md); }
.card:hover.bracket::before, .card:hover.bracket::after, .card:target.bracket::before, .card:target.bracket::after { border-color: var(--glow-color); }
.card__index { font-family: var(--font-mono); font-size: var(--text-xs); letter-spacing: var(--tracking-mono); text-transform: uppercase; color: var(--primary-color); font-weight: 500; }
.card__title { font-family: var(--font-display); font-weight: 500; font-size: var(--text-lg); }

/* ---------- Metrics ---------- */
.metrics__grid { display: grid; grid-template-columns: repeat(2, 1fr); margin: 0; }
.metrics__grid > div { display: flex; flex-direction: column-reverse; justify-content: flex-end; gap: var(--space-2); padding: var(--space-6) var(--space-4); }
.metrics__grid > div:nth-child(odd) { border-right: 1px solid var(--secondary-color); padding-left: 0; }
.metrics__grid > div:nth-child(-n+2) { border-bottom: 1px solid var(--secondary-color); }
.metrics__grid dd { margin: 0; font-family: var(--font-mono); font-weight: 500; font-size: var(--text-3xl); letter-spacing: -0.02em; font-variant-numeric: tabular-nums; line-height: 1.1; }
.metrics__grid dt { font-size: var(--text-sm); color: var(--text-secondary); }
.metrics__note { margin-top: var(--space-6); font-size: var(--text-xs); color: var(--text-secondary); }

/* ---------- Proof ---------- */
.proof { display: grid; gap: var(--space-8); align-items: center; }
.proof__quote { display: grid; gap: var(--space-4); }
.proof__quote blockquote::before { content: "\201C"; display: block; height: 0.6em; font-family: var(--font-display); font-size: 4rem; line-height: 1; color: var(--secondary-color); }
.proof__quote blockquote p { font-family: var(--font-display); font-weight: 500; font-size: var(--text-2xl); line-height: var(--leading-snug); max-width: 28ch; }
.proof__quote figcaption { font-family: var(--font-mono); font-size: var(--text-xs); letter-spacing: var(--tracking-mono); text-transform: uppercase; color: var(--text-secondary); }
.proof__case-stat { font-family: var(--font-mono); font-size: var(--text-3xl); font-weight: 500; line-height: 1; }
.proof__case a { font-weight: 500; text-decoration: none; display: inline-flex; min-height: 44px; align-items: center; }
.proof__case a:hover { text-decoration: underline; text-underline-offset: 3px; }

/* ---------- CTA ---------- */
.cta { border-top: 1px solid var(--border-color); }
.cta__inner { display: grid; justify-items: center; gap: var(--space-5); text-align: center; }
.cta h2 { font-size: clamp(var(--text-2xl), 1.2rem + 2.4vw, 2.75rem); max-width: 18ch; }
.cta .lead { color: var(--text-secondary); }

/* ---------- Footer ---------- */
.site-footer { border-top: 1px solid var(--secondary-color); padding-block: var(--space-12) var(--space-8); font-size: var(--text-sm); }
.footer__grid { display: grid; gap: var(--space-8); grid-template-columns: repeat(2, 1fr); }
.footer__brand { grid-column: 1 / -1; display: grid; gap: var(--space-2); justify-items: start; }
.footer__h { font-family: var(--font-mono); font-size: var(--text-xs); letter-spacing: var(--tracking-mono); text-transform: uppercase; color: var(--text-secondary); font-weight: 500; margin-bottom: var(--space-2); }
.site-footer ul a { display: inline-flex; min-height: 44px; align-items: center; color: var(--text-primary); text-decoration: none; }
.site-footer ul a:hover { color: var(--primary-color); }
.footer__legal { margin-top: var(--space-10); padding-top: var(--space-6); border-top: 1px solid var(--border-color); color: var(--text-secondary); }

/* ---------- Breakpoints ---------- */
@media (min-width: 640px) {
  .cap-grid { grid-template-columns: repeat(2, 1fr); }
  .metrics__grid dd { font-size: 2.25rem; }
}
@media (min-width: 768px) {
  .section-head h2, .cta h2 { font-size: var(--text-3xl); }
  .hero__art { max-width: 26rem; }
  .proof { grid-template-columns: 2fr 1fr; }
  .proof__quote { padding-left: var(--space-8); border-left: 1px solid var(--secondary-color); }
  .footer__grid { grid-template-columns: 2fr repeat(3, 1fr); }
  .footer__brand { grid-column: auto; align-content: start; }
}
@media (min-width: 1024px) {
  .hero { padding-top: var(--space-16); }
  .hero__art { max-width: 28rem; }
  .cap-grid { grid-template-columns: repeat(4, 1fr); }
  .metrics__grid { grid-template-columns: repeat(4, 1fr); }
  .metrics__grid > div { padding: var(--space-4) var(--space-6); border-bottom: 0 !important; border-right: 1px solid var(--secondary-color); }
  .metrics__grid > div:first-child { padding-left: 0; }
  .metrics__grid > div:last-child { border-right: 0; }
  .metrics__grid dd { font-size: 2.75rem; }

  /* Annotations float beside the figure with leader lines */
  .hud-notes { position: absolute; inset: 0; margin: 0; display: block; pointer-events: none; }
  .hud-note { position: absolute; top: var(--pos-y); width: 13rem; pointer-events: auto; }
  .hud-note--left { right: calc(50% + 10rem); text-align: right; }
  .hud-note--right { left: calc(50% + 10rem); }
  .hud-note a { justify-items: inherit; }
  .hud-note::before { /* leader line */
    content: ""; position: absolute; top: 50%; width: 5rem; height: 1px;
    background: var(--glow-color); opacity: 0.6;
    transform-origin: var(--line-origin, left);
    animation: line-draw 600ms var(--ease-out) 300ms both;
    transition: opacity var(--duration-fast) ease, box-shadow var(--duration-base) ease;
  }
  .hud-note::after { /* ring dot */
    content: ""; position: absolute; top: 50%; width: 6px; height: 6px; margin-top: -3px;
    border: 1.5px solid var(--glow-color); border-radius: 50%; background: var(--bg-primary);
    transition: border-color var(--duration-fast) ease, box-shadow var(--duration-base) ease;
  }
  .hud-note--left::before { left: 100%; --line-origin: left; }
  .hud-note--left::after { left: calc(100% + 5rem); }
  .hud-note--right::before { right: 100%; --line-origin: right; }
  .hud-note--right::after { right: calc(100% + 5rem); }
  .hud-note:hover::before, .hud-note:focus-within::before { opacity: 1; box-shadow: 0 0 12px rgb(47 183 194 / 0.6); }
  .hud-note:hover::after, .hud-note:focus-within::after { border-color: var(--accent-color); }
  .hud-note a:hover, .hud-note a:focus-visible { box-shadow: var(--shadow-glow); }
}
@media (min-width: 1280px) {
  .hero__art { max-width: 30rem; }
  .hud-note--left { right: calc(50% + 11rem); }
  .hud-note--right { left: calc(50% + 11rem); }
  .hud-note::before { width: 5.5rem; }
  .hud-note--left::after { left: calc(100% + 5.5rem); }
  .hud-note--right::after { right: calc(100% + 5.5rem); }
}
@keyframes line-draw { from { transform: scaleX(0); } to { transform: scaleX(1); } }

@media (prefers-reduced-motion: reduce) {
  .hud-note::before { animation: none; }
  .card:hover { transform: none; }
}