/* Radradium — site styles. Colour/type custom properties mirror design/tokens.css. */
:root {
  --paper: #f6f5ef;
  --paper-2: #ecebe3;
  --paper-raised: #ffffff;
  --line: #dedcd2;
  --line-strong: #868a83;
  --ink: #121a15;
  --ink-2: #3b4540;
  --muted: #5d665f;
  --radium: #7df279;
  --radium-glow: #b8ff9e;
  --radium-edge: #3fae4a;
  --radium-deep: #137a35;
  --radium-soft: #e2f9dc;
  --dial: #0f1a14;
  --dial-2: #1f2e25;
  --on-dial: #f1f5ee;
  --on-dial-muted: #9db3a5;
  --shadow-card: 0 1px 2px rgba(18, 26, 21, 0.10), 0 14px 34px rgba(18, 26, 21, 0.18);
  --shadow-lift: 0 2px 4px rgba(18, 26, 21, 0.10), 0 24px 48px rgba(18, 26, 21, 0.22);
  --shadow-tile: 0 1px 2px rgba(18, 26, 21, 0.06), 0 6px 16px rgba(18, 26, 21, 0.08);
  --ledge-radium: 0 4px 0 #3fae4a;
  --font-display: "Unbounded", ui-sans-serif, system-ui, sans-serif;
  --font-sans: "Instrument Sans", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, Menlo, monospace;
}

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

@font-face { font-family: "Unbounded"; src: url("/assets/fonts/unbounded.woff2") format("woff2"); font-weight: 200 900; font-display: swap; }
@font-face { font-family: "Instrument Sans"; src: url("/assets/fonts/instrument-sans.woff2") format("woff2"); font-weight: 400 700; font-display: swap; }
@font-face { font-family: "JetBrains Mono"; src: url("/assets/fonts/jetbrains-mono.woff2") format("woff2"); font-weight: 100 800; font-display: swap; }

body { margin: 0; background: var(--paper); color: var(--ink); font-family: var(--font-sans); -webkit-font-smoothing: antialiased; }
a { color: var(--radium-deep); }
a:hover { color: var(--ink); }
:focus-visible { outline: 2px solid var(--radium-deep); outline-offset: 3px; }

/* layout */
.rr-page { min-height: 100%; background: var(--paper); color: var(--ink); }
.rr-wrap { max-width: 1216px; margin: 0 auto; padding-left: 48px; padding-right: 48px; }
@media (max-width: 640px) { .rr-wrap { padding-left: 20px; padding-right: 20px; } }
.rr-m0 { margin: 0; }
.rr-mt-16 { margin-top: 16px; }

/* header */
.rr-header { padding-top: 20px; padding-bottom: 20px; display: flex; flex-wrap: wrap; gap: 16px; align-items: center; justify-content: space-between; }
.rr-logo-link { display: block; }
.rr-nav { display: flex; flex-wrap: wrap; gap: 28px; align-items: center; font-size: 15px; font-weight: 500; }
.rr-nav a { color: var(--ink-2); text-decoration: none; }
.rr-nav a:hover { color: var(--ink); }
@media (max-width: 640px) {
  .rr-nav a { display: inline-flex; align-items: center; min-height: 44px; }
}

/* shared text */
.rr-kicker { font-family: var(--font-mono); font-size: 12px; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-2); }
.rr-h1 { margin: 0; font-family: var(--font-display); font-weight: 600; font-size: clamp(44px, 6vw, 72px); line-height: 0.98; letter-spacing: -0.03em; }
.rr-h2 { margin: 0; font-family: var(--font-display); font-weight: 600; font-size: clamp(32px, 4vw, 44px); line-height: 1; letter-spacing: -0.025em; }
.rr-mark { background: linear-gradient(transparent 62%, var(--radium) 62%, var(--radium) 92%, transparent 92%); padding: 0 0.06em; }
.rr-lead { margin: 0; font-size: 20px; line-height: 1.5; color: var(--ink-2); max-width: 34em; }
.rr-section-head { display: flex; flex-wrap: wrap; gap: 16px 48px; align-items: flex-end; justify-content: space-between; }
.rr-section-head-left { display: flex; flex-direction: column; gap: 12px; }
.rr-section-desc { margin: 0; max-width: 26em; font-size: 17px; line-height: 1.55; color: var(--ink-2); }

/* buttons */
.rr-btn { display: inline-flex; align-items: center; gap: 8px; min-height: 44px; padding: 0.8em 1.3em; border-radius: 16px; font-size: 16px; font-weight: 600; line-height: 1.1; text-decoration: none; transition: transform 80ms ease-out, box-shadow 80ms ease-out; }
.rr-btn:hover { transform: translateY(-1px); }
.rr-btn:active { transform: translateY(4px); box-shadow: none !important; }
.rr-btn-primary { border: 2px solid var(--radium-edge); background: var(--radium); color: var(--ink); box-shadow: var(--ledge-radium); }
.rr-btn-secondary { border: 2px solid var(--line-strong); background: var(--paper-raised); color: var(--ink); box-shadow: 0 4px 0 var(--line); }
.rr-btn-row { display: flex; flex-wrap: wrap; gap: 16px; align-items: center; }
@media (prefers-reduced-motion: reduce) { .rr-btn { transition: none; transform: none; } }

/* hero */
.rr-hero { padding-top: 88px; padding-bottom: 96px; display: flex; flex-wrap: wrap; gap: 64px; align-items: center; justify-content: space-between; }
.rr-hero-copy { flex: 1 1 520px; max-width: 640px; display: flex; flex-direction: column; gap: 28px; }

/* periodic tile grid */
.rr-periodic-grid { flex: 0 1 392px; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; }
.rr-tile { aspect-ratio: 1; padding: 12px 14px; box-sizing: border-box; border-radius: 16px; display: flex; flex-direction: column; justify-content: space-between; text-decoration: none; min-width: 0; transition: transform 140ms ease-out; }
.rr-tile > span:last-child { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
a.rr-tile:hover { transform: translateY(-3px) rotate(-1.5deg); }
.rr-tile-num { font-family: var(--font-mono); font-size: 12px; font-weight: 700; }
.rr-tile-sym { font-family: var(--font-display); font-size: 34px; font-weight: 600; letter-spacing: -0.02em; line-height: 1; }
.rr-tile-name { font-size: 12px; font-weight: 500; }
.rr-tile--radium { background: var(--radium); color: var(--ink); box-shadow: inset 0 0 0 1px var(--radium-edge), 0 6px 16px rgba(18, 26, 21, 0.08); }
.rr-tile--dial { background: var(--dial); color: var(--on-dial); box-shadow: 0 6px 16px rgba(18, 26, 21, 0.12); }
.rr-tile--dial .rr-tile-num, .rr-tile--dial .rr-tile-name { color: var(--on-dial-muted); }
.rr-tile--dial .rr-tile-sym--glow { color: var(--radium); text-shadow: 0 0 16px rgba(125, 242, 121, 0.5); }
.rr-tile--white { background: var(--paper-raised); color: var(--ink); box-shadow: var(--shadow-tile); }
.rr-tile--white .rr-tile-num, .rr-tile--white .rr-tile-name { color: var(--muted); }
.rr-tile--next { border: 1.5px dashed var(--line-strong); color: var(--muted); }
@media (max-width: 640px) { .rr-periodic-grid { flex-basis: 100%; } }

/* pills */
.rr-pill { padding: 4px 10px; border-radius: 999px; font-family: var(--font-mono); font-size: 12px; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; }
.rr-pill--dial { background: var(--dial-2); color: var(--on-dial-muted); }
.rr-pill--new { display: inline-flex; align-items: center; gap: 6px; background: var(--radium-soft); color: var(--radium-deep); }
.rr-pill--ink { background: var(--ink); color: var(--radium); }
.rr-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--radium-edge); }
.rr-url-pill { padding: 6px 12px; border-radius: 999px; font-family: var(--font-mono); font-size: 13px; font-weight: 600; }
.rr-url-pill--dial { background: var(--dial-2); color: var(--on-dial); }
.rr-url-pill--ink { background: var(--ink); color: var(--radium); }
.rr-year-tag { font-family: var(--font-mono); font-size: 12px; font-weight: 600; letter-spacing: 0.08em; color: var(--on-dial-muted); }

/* cards */
.rr-card-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 24px; }
.rr-card { position: relative; isolation: isolate; overflow: hidden; display: flex; flex-direction: column; gap: 8px; border-radius: 24px; padding: 24px; text-decoration: none; box-shadow: var(--shadow-card); transition: transform 160ms ease-out, box-shadow 160ms ease-out; }
.rr-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lift) !important; }
.rr-card:hover .rr-sym-glow { text-shadow: 0 0 2px var(--radium-glow), 0 0 34px rgba(125, 242, 121, 0.8) !important; }
@media (prefers-reduced-motion: reduce) { .rr-card, .rr-card:hover { transition: none; transform: none; } }
.rr-card--product { min-height: 340px; background: var(--dial); color: var(--on-dial); }
.rr-card--product .rr-card-num { color: var(--on-dial-muted); }
.rr-card-top { display: flex; align-items: center; justify-content: space-between; }
.rr-card-num { font-family: var(--font-mono); font-size: 14px; font-weight: 700; }
.rr-sym-glow { margin-top: 24px; font-family: var(--font-display); font-size: 56px; font-weight: 600; letter-spacing: -0.02em; line-height: 1; color: var(--radium); text-shadow: 0 0 2px var(--radium-glow), 0 0 22px rgba(125, 242, 121, 0.55); }
.rr-card-title { margin-top: 8px; font-family: var(--font-display); font-size: 24px; font-weight: 600; letter-spacing: -0.015em; line-height: 1.15; }
.rr-card-desc { margin: 0; font-size: 17px; line-height: 1.55; color: var(--on-dial-muted); max-width: 34ch; }
.rr-card-footer { margin-top: auto; padding-top: 16px; display: flex; align-items: center; justify-content: space-between; }

/* service card */
.rr-card--service { display: flex; flex-direction: row; flex-wrap: wrap; align-items: center; gap: 24px 48px; padding: 32px; background: var(--radium); border: 1px solid var(--radium-edge); color: var(--ink); }
.rr-service-symbol-col { flex: 0 0 auto; display: flex; flex-direction: column; gap: 8px; min-width: 160px; }
.rr-service-symbol { font-family: var(--font-display); font-size: 96px; font-weight: 600; letter-spacing: -0.02em; line-height: 1; }
.rr-service-content { flex: 1 1 360px; display: flex; flex-direction: column; gap: 10px; }
.rr-service-title { font-family: var(--font-display); font-size: 28px; font-weight: 600; letter-spacing: -0.015em; line-height: 1.15; }
.rr-service-desc { margin: 0; font-size: 18px; line-height: 1.55; color: var(--ink-2); max-width: 36em; }
.rr-service-meta { flex: 0 0 auto; display: flex; flex-direction: column; align-items: flex-start; gap: 14px; }

/* by the way band */
.rr-btw-band { display: flex; flex-wrap: wrap; align-items: center; gap: 24px 48px; padding: 24px 32px; border-radius: 24px; background: var(--paper-2); }
.rr-btw-head { flex: 0 0 220px; display: flex; flex-direction: column; gap: 8px; }
.rr-btw-desc { margin: 0; font-size: 15px; line-height: 1.5; color: var(--ink-2); }
.rr-btw-grid { flex: 1 1 480px; display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 16px 24px; }
.rr-btw-item { display: flex; align-items: center; gap: 12px; text-decoration: none; color: var(--ink); min-height: 44px; }
.rr-btw-item:hover b { text-decoration: underline; text-decoration-color: var(--radium-deep); text-underline-offset: 3px; }
.rr-btw-icon { flex: 0 0 56px; height: 56px; padding: 6px 7px; box-sizing: border-box; border-radius: 10px; background: var(--paper-raised); box-shadow: var(--shadow-tile); display: flex; flex-direction: column; justify-content: space-between; }
.rr-btw-icon-num { font-family: var(--font-mono); font-size: 10px; font-weight: 700; color: var(--muted); }
.rr-btw-icon-sym { font-family: var(--font-display); font-size: 20px; font-weight: 600; line-height: 1; }
.rr-btw-text { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.rr-btw-title { font-size: 15px; font-weight: 600; }
.rr-btw-item-desc { font-size: 13px; line-height: 1.4; color: var(--ink-2); }
@media (max-width: 640px) { .rr-btw-band { padding: 20px; } }

/* about */
.rr-about { padding-bottom: 96px; display: flex; flex-wrap: wrap; gap: 32px 64px; }
.rr-about-side { flex: 0 0 220px; display: flex; flex-direction: column; gap: 16px; }
.rr-about-mark { width: 88px; height: 88px; display: block; }
.rr-about-content { flex: 1 1 480px; max-width: 680px; display: flex; flex-direction: column; gap: 16px; font-size: 18px; line-height: 1.6; color: var(--ink-2); }
.rr-about-lead { margin: 0; font-family: var(--font-display); font-size: 26px; font-weight: 600; line-height: 1.25; letter-spacing: -0.015em; color: var(--ink); }

/* section paddings */
.rr-products { padding-top: 32px; padding-bottom: 80px; display: flex; flex-direction: column; gap: 32px; }
.rr-service { padding-bottom: 80px; display: flex; flex-direction: column; gap: 32px; }
.rr-sideprojects { padding-bottom: 96px; }

/* footer */
.rr-footer { background: var(--paper-2); }
.rr-footer-inner { padding-top: 40px; padding-bottom: 28px; display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 32px; font-size: 15px; line-height: 1.5; color: var(--ink-2); }
.rr-footer-col { display: flex; flex-direction: column; gap: 8px; }
.rr-footer-h4 { margin: 0; font-family: var(--font-mono); font-size: 12px; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink); }
.rr-footer-links { margin: 0; display: flex; flex-wrap: wrap; gap: 6px 14px; }
.rr-footer-bottom { grid-column: 1 / -1; padding-top: 16px; border-top: 1px solid var(--line); display: flex; flex-wrap: wrap; gap: 8px 24px; justify-content: space-between; font-family: var(--font-mono); font-size: 12px; font-weight: 500; line-height: 1.4; color: var(--ink-2); }
@media (max-width: 640px) {
  .rr-footer-links a { display: inline-flex; align-items: center; min-height: 44px; }
}

/* 404 */
.rr-404-main { min-height: 100vh; box-sizing: border-box; padding: 48px; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 28px; text-align: center; }
@media (max-width: 640px) { .rr-404-main { padding: 20px; } }
.rr-404-tile { width: 160px; aspect-ratio: 1; padding: 16px 18px; box-sizing: border-box; border-radius: 24px; border: 1.5px dashed var(--line-strong); color: var(--muted); display: flex; flex-direction: column; justify-content: space-between; text-align: left; }
.rr-404-q { font-family: var(--font-display); font-size: 52px; font-weight: 600; line-height: 1; color: var(--ink); }
.rr-404-label { font-size: 13px; font-weight: 500; }
.rr-404-h1 { margin: 0; font-family: var(--font-display); font-weight: 600; font-size: clamp(28px, 4vw, 40px); line-height: 1.05; letter-spacing: -0.025em; }
.rr-404-desc { margin: 0; font-size: 18px; line-height: 1.5; color: var(--ink-2); }