/*
 * RingRing website — Aintu / RingRing Unified Brand System v10.3
 * data-brand="ringring" selects the logo and company identifiers only.
 * data-profile="evidence": type-led hero on foundation, diagrammatic line illustration,
 * motion 160–220ms cubic-bezier(0.2, 0, 0, 1), no gradients.
 * Every value below is a v10.3 token (tokens.css) unless marked "layout".
 */

@font-face { font-family:"Inter"; font-style:normal; font-weight:400; font-display:swap; src:url("../fonts/inter-latin-400-normal.woff2") format("woff2"); unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD; }
@font-face { font-family:"Inter"; font-style:normal; font-weight:500; font-display:swap; src:url("../fonts/inter-latin-500-normal.woff2") format("woff2"); unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD; }
@font-face { font-family:"Inter"; font-style:normal; font-weight:600; font-display:swap; src:url("../fonts/inter-latin-600-normal.woff2") format("woff2"); unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD; }
@font-face { font-family:"Inter"; font-style:normal; font-weight:700; font-display:swap; src:url("../fonts/inter-latin-700-normal.woff2") format("woff2"); unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD; }
@font-face { font-family:"Inter"; font-style:normal; font-weight:400; font-display:swap; src:url("../fonts/inter-latin-ext-400-normal.woff2") format("woff2"); unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF; }
@font-face { font-family:"Inter"; font-style:normal; font-weight:500; font-display:swap; src:url("../fonts/inter-latin-ext-500-normal.woff2") format("woff2"); unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF; }
@font-face { font-family:"Inter"; font-style:normal; font-weight:600; font-display:swap; src:url("../fonts/inter-latin-ext-600-normal.woff2") format("woff2"); unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF; }
@font-face { font-family:"Inter"; font-style:normal; font-weight:700; font-display:swap; src:url("../fonts/inter-latin-ext-700-normal.woff2") format("woff2"); unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF; }
@font-face { font-family:"JetBrains Mono"; font-style:normal; font-weight:400; font-display:swap; src:url("../fonts/jetbrains-mono-latin-400-normal.woff2") format("woff2"); unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD; }
@font-face { font-family:"JetBrains Mono"; font-style:normal; font-weight:700; font-display:swap; src:url("../fonts/jetbrains-mono-latin-700-normal.woff2") format("woff2"); unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD; }

:root {
  /* Surfaces */
  --surface-canvas: #F7F4EE;
  --surface-white: #FFFFFF;
  --surface-sunken: #EDE9E1;
  --surface-foundation: #1B1714;
  /* Ink ramp */
  --ink-200: #DAD5CB;
  --ink-300: #C4BFB5;
  --ink-400: #9C9890;
  --ink-600: #6B6862;
  --ink-700: #4A4844;
  --ink-800: #2B2A28;
  --ink-900: #1B1714;
  /* Signature (shared vermilion) */
  --sig-300: #FF8A66;
  --sig-400: #FF6738;
  --sig-500: #FE3C00;
  /* Light roles */
  --text-heading: #1B1714;
  --text-primary: #2B2A28;
  --text-secondary: #4A4844;
  --text-muted: #6B6862;
  --text-signature: #CC3000;
  --text-link: #CC3000;
  --border: #DAD5CB;
  --rule: #DAD5CB;
  /* Dark roles */
  --dark-surface-raised: #262220;
  --dark-text-heading: #FFFFFF;
  --dark-text-primary: #F7F4EE;
  --dark-text-secondary: #C4BFB5;
  --dark-text-muted: #9C9890;
  --dark-text-signature: #FF8A66;
  --dark-border: #3E3733;
  --dark-border-strong: #4A4844;
  --dark-rule: #332D29;
  --dark-boundary-essential: #9C9890;
  /* Geometry */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --space-1: 4px; --space-2: 8px; --space-3: 12px; --space-4: 16px;
  --space-5: 24px; --space-6: 32px; --space-7: 48px; --space-8: 64px; --space-9: 96px;
  /* Type */
  --font-ui: "Inter", Arial, Helvetica, sans-serif;
  --font-data: "JetBrains Mono", Consolas, ui-monospace, monospace;
  --type-hero-statement: 48px;
  --type-conclusion: 38px;
  --type-title: 29px;
  --type-heading: 22px;
  --type-heading-compact: 18px;
  --type-subhead: 17px;
  --type-body: 14px;
  --type-caption: 11px;
  --type-eyebrow: 10px;
  /* Motion (evidence) */
  --motion-fast: 160ms;
  --motion-base: 220ms;
  --ease: cubic-bezier(0.2, 0, 0, 1);
  /* Layout */
  --max: 1200px;
  --header-h: 72px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: var(--header-h); }
body {
  margin: 0;
  font-family: var(--font-ui);
  font-size: var(--type-body);
  line-height: 1.6;
  color: var(--text-primary);
  background: var(--surface-canvas);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
body.menu-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; height: auto; }
button { font: inherit; }
h1, h2, h3, p, ol, figure { margin: 0; }
ol { padding: 0; list-style: none; }

.container { width: min(calc(100% - 2 * var(--space-5)), var(--max)); margin: 0 auto; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }

/* Focus: 2px signature ring, 2px offset (accessibility.focusRing) */
:focus-visible { outline: 2px solid var(--sig-500); outline-offset: 2px; border-radius: var(--radius-sm); }

.skip-link {
  position: fixed; top: var(--space-3); left: var(--space-3); z-index: 1000;
  transform: translateY(-200%); background: var(--sig-500); color: var(--ink-900);
  padding: var(--space-2) var(--space-4); border-radius: var(--radius-md); font-weight: 600;
  transition: transform var(--motion-fast) var(--ease);
}
.skip-link:focus { transform: translateY(0); }

/* Eyebrow: 10px / 700, tracked caps. Signature text token by surface. */
.eyebrow {
  font-size: var(--type-eyebrow); font-weight: 700; letter-spacing: .12em;
  text-transform: uppercase; color: var(--text-signature); margin: 0 0 var(--space-4);
}
.eyebrow--dark { color: var(--dark-text-signature); }

/* ---------- Header (foundation) ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: var(--surface-foundation);
  border-bottom: 1px solid var(--dark-rule);
}
.nav { min-height: var(--header-h); display: flex; justify-content: space-between; align-items: center; gap: var(--space-4); }
.brand { display: inline-flex; padding: var(--space-1) 0; }
.brand img { height: 35px; width: auto; } /* 0.36in header lockup height; 152px wide, above the 104px screen minimum */
.nav-links { display: flex; gap: var(--space-6); align-items: center; font-size: var(--type-body); font-weight: 500; color: var(--dark-text-secondary); }
.nav-links a { transition: color var(--motion-fast) var(--ease); }
.nav-links a:hover { color: var(--dark-text-heading); }
.nav-links .nav-cta {
  color: var(--ink-900); background: var(--sig-500);
  padding: var(--space-2) var(--space-4); border-radius: var(--radius-md); font-weight: 600;
  transition: background-color var(--motion-fast) var(--ease);
}
.nav-links .nav-cta:hover { color: var(--ink-900); background: var(--sig-400); }
.nav-links .nav-cta:active { background: var(--sig-300); }
.menu-toggle {
  display: none; width: 44px; height: 44px; padding: 0; cursor: pointer;
  background: transparent; border: 1px solid var(--dark-boundary-essential); border-radius: var(--radius-md);
}
.menu-toggle span { display: block; width: 18px; height: 1.5px; background: var(--dark-text-primary); margin: 5px auto; transition: transform var(--motion-fast) var(--ease); }
.menu-toggle[aria-expanded="true"] span:first-child { transform: translateY(3.25px) rotate(45deg); }
.menu-toggle[aria-expanded="true"] span:last-child { transform: translateY(-3.25px) rotate(-45deg); }

/* ---------- Hero: TYPE_LED on foundation ---------- */
.hero {
  background: var(--surface-foundation); color: var(--dark-text-primary);
  padding: var(--space-9) 0 var(--space-9);
}
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr); gap: var(--space-8); align-items: center; }
.hero h1 {
  font-size: var(--type-hero-statement); font-weight: 700; line-height: 1.05; letter-spacing: -.02em;
  color: var(--dark-text-heading); margin-bottom: var(--space-5); max-width: 14ch;
}
.hero-copy { font-size: var(--type-subhead); line-height: 1.6; color: var(--dark-text-secondary); max-width: 44ch; }
.hero-actions { margin-top: var(--space-6); display: flex; gap: var(--space-3); flex-wrap: wrap; }

/* Buttons: measured state pairs ($buttonStates) */
.button {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 44px; padding: 0 var(--space-5); border-radius: var(--radius-md);
  font-size: var(--type-body); font-weight: 600; border: 1px solid transparent;
  transition: background-color var(--motion-fast) var(--ease), border-color var(--motion-fast) var(--ease), color var(--motion-fast) var(--ease);
}
.button--signature { background: var(--sig-500); color: var(--ink-900); }
.button--signature:hover { background: var(--sig-400); }
.button--signature:active { background: var(--sig-300); }
.button--ghost { color: var(--dark-text-primary); border-color: var(--dark-boundary-essential); }
.button--ghost:hover { background: var(--dark-surface-raised); border-color: var(--dark-text-secondary); }

/* Diagrammatic line illustration: 1.5px single-weight strokes, no fills, ink ramp + one signature accent */
.hero-figure { display: grid; gap: var(--space-5); justify-items: center; }
.cycle { width: 100%; max-width: 480px; height: auto; overflow: visible; }
.cycle-ring, .cycle-inner { fill: none; stroke: var(--dark-border-strong); stroke-width: 1.5; }
.cycle-inner { stroke: var(--dark-rule); stroke-dasharray: 2 6; }
.cycle-ticks line { stroke: var(--dark-border); stroke-width: 1.5; }
.cycle-accent { fill: none; stroke: var(--sig-500); stroke-width: 1.5; }
.cycle-arrows path { fill: none; stroke: var(--ink-400); stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; }
.cycle-arrows path.accent { stroke: var(--sig-500); }
.cycle-nodes circle { fill: var(--surface-foundation); stroke: var(--ink-300); stroke-width: 1.5; }
.cycle-nodes circle.accent { stroke: var(--sig-500); }
.cycle-labels text { font-family: var(--font-ui); font-size: 11px; font-weight: 700; letter-spacing: .12em; fill: var(--dark-text-muted); }
.art-copy { width: 100%; max-width: 440px; border-top: 1px solid var(--dark-rule); padding-top: var(--space-5); }
.art-copy .small { font-size: var(--type-eyebrow); font-weight: 700; letter-spacing: .12em; text-transform: uppercase; color: var(--dark-text-muted); margin-bottom: var(--space-2); }
.art-copy p { font-size: var(--type-heading-compact); font-weight: 400; line-height: 1.45; color: var(--dark-text-primary); }

/* ---------- Capabilities (canvas, white cards) ---------- */
.band { padding: var(--space-8) 0; }
.band-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--space-5); }
.feature {
  background: var(--surface-white); border: 1px solid var(--border); border-radius: var(--radius-md);
  padding: var(--space-6) var(--space-5);
}
.icon { width: 32px; height: 32px; margin-bottom: var(--space-5); }
.icon svg { width: 32px; height: 32px; stroke: var(--sig-500); fill: none; stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; }
.feature h3 { font-size: var(--type-heading-compact); font-weight: 700; line-height: 1.3; color: var(--text-heading); margin-bottom: var(--space-2); }
.feature p { font-size: var(--type-body); line-height: 1.65; color: var(--text-secondary); }

/* ---------- What RingRing does ---------- */
.positioning { padding: var(--space-7) 0 var(--space-9); }
.positioning-grid { display: grid; grid-template-columns: minmax(0, 3fr) minmax(0, 9fr); gap: var(--space-6); }
.positioning-head { border-top: 2px solid var(--sig-500); padding-top: var(--space-5); align-self: start; position: sticky; top: calc(var(--header-h) + var(--space-5)); }
.positioning-head .eyebrow { margin: 0; }
.statements { border-top: 1px solid var(--rule); }
.statement { display: grid; grid-template-columns: 56px minmax(0, 1fr); gap: var(--space-4); padding: var(--space-6) 0; border-bottom: 1px solid var(--rule); }
.idx { font-family: var(--font-data); font-size: var(--type-caption); font-weight: 700; letter-spacing: .08em; color: var(--text-signature); padding-top: 7px; }
.statement p { font-size: var(--type-heading); font-weight: 400; line-height: 1.45; letter-spacing: -.01em; color: var(--text-primary); max-width: 52ch; }

/* ---------- Contact and footer (foundation close) ---------- */
.contact-section { background: var(--surface-foundation); color: var(--dark-text-primary); padding: var(--space-8) 0 var(--space-7); }
.contact { display: grid; grid-template-columns: minmax(0, 1fr) auto auto; gap: var(--space-8); align-items: start; }
.contact .label { font-size: var(--type-eyebrow); font-weight: 700; letter-spacing: .12em; text-transform: uppercase; color: var(--dark-text-muted); margin-bottom: var(--space-3); }
.contact p { font-size: var(--type-body); line-height: 1.75; color: var(--dark-text-primary); }
.contact a { color: var(--dark-text-signature); border-bottom: 1px solid transparent; transition: border-color var(--motion-fast) var(--ease); }
.contact a:hover { border-bottom-color: currentColor; }

.site-footer { background: var(--surface-foundation); color: var(--dark-text-muted); font-size: var(--type-caption); }
.footer-row { display: flex; justify-content: space-between; gap: var(--space-5); align-items: center; padding: var(--space-5) 0; border-top: 1px solid var(--dark-rule); }
.footer-links { display: flex; gap: var(--space-5); }
.footer-links a { transition: color var(--motion-fast) var(--ease); }
.footer-links a:hover { color: var(--dark-text-heading); }

/* ---------- Motion: reveals structure, never celebrates. Hidden only when the script is running. ---------- */
.js .reveal { opacity: 0; transform: translateY(8px); transition: opacity var(--motion-base) var(--ease), transform var(--motion-base) var(--ease); }
.js .reveal.visible { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; }
  .js .reveal { opacity: 1; transform: none; }
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .hero-grid { grid-template-columns: 1fr; gap: var(--space-7); }
  .hero-figure { justify-items: start; }
  .positioning-grid { grid-template-columns: 1fr; gap: var(--space-5); }
  .positioning-head { position: static; }
}
@media (max-width: 860px) {
  .menu-toggle { display: block; }
  .nav-links {
    display: none; position: fixed; inset: var(--header-h) 0 auto 0;
    background: var(--surface-foundation); border-bottom: 1px solid var(--dark-rule);
    padding: var(--space-5) var(--space-5) var(--space-6);
    flex-direction: column; align-items: flex-start; gap: var(--space-5); font-size: var(--type-subhead);
  }
  .nav-links.open { display: flex; }
  .band-grid { grid-template-columns: 1fr; gap: var(--space-4); }
  .contact { grid-template-columns: 1fr; gap: var(--space-6); }
}
@media (max-width: 640px) {
  .container { width: min(calc(100% - 2 * var(--space-4)), var(--max)); }
  .hero { padding: var(--space-8) 0 var(--space-8); }
  .hero h1 { font-size: var(--type-conclusion); }
  .statement { grid-template-columns: 40px minmax(0, 1fr); gap: var(--space-3); padding: var(--space-5) 0; }
  .statement p { font-size: var(--type-heading-compact); }
  .footer-row { flex-direction: column; align-items: flex-start; gap: var(--space-2); }
  .cycle-labels text { font-size: 13px; }
}