/* bythebay foundry — front door
   Keystone identity. Industrial-editorial. Two faces: light + dark, one system.
   The ember "bay seam" is the through-line. */

:root {
  /* brand constants (same in both themes) */
  --ember: #E2562B;
  --ember-deep: #C2451F;
  --steel: #5B7C8D;
  --brass: #C8924A;

  /* semantic tokens — LIGHT (default) */
  --bg: #F4F1EA;
  --bg-soft: #ECE8DE;
  --card: #F4F1EA;
  --card-hover: #FFFFFF;
  --card-next: #E3DED2;
  --text: #14181D;
  --text-muted: #565b62;
  --text-faint: #6B7079;
  --line: rgba(20, 24, 29, 0.12);
  --line-2: rgba(20, 24, 29, 0.22);

  --panel: #14181D;          /* inverse band/footer in light mode */
  --panel-soft: #1b2026;
  --on-panel: #F4F1EA;
  --on-panel-muted: rgba(244, 241, 234, 0.66);
  --on-panel-faint: rgba(244, 241, 234, 0.5);
  --panel-line: rgba(244, 241, 234, 0.14);

  --mark-block: #14181D;
  --nav-scrolled: rgba(244, 241, 234, 0.82);
  --hero-line: rgba(91, 124, 141, 0.16);
  --mark-shadow: rgba(20, 24, 29, 0.14);

  --font-display: "Space Grotesk", system-ui, sans-serif;
  --font-body: "Inter", system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;

  --wrap: 1180px;
  --gut: clamp(1.25rem, 4vw, 4rem);
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

:root[data-theme="dark"] {
  --bg: #101316;
  --bg-soft: #161A1F;
  --card: #171B21;
  --card-hover: #1D222A;
  --card-next: #1F242B;
  --text: #F4F1EA;
  --text-muted: #B8B3A8;
  --text-faint: #8C9097;
  --line: rgba(244, 241, 234, 0.12);
  --line-2: rgba(244, 241, 234, 0.20);

  --panel: #181C22;          /* slightly elevated surface in dark mode */
  --panel-soft: #1C2128;
  --on-panel: #F4F1EA;
  --on-panel-muted: rgba(244, 241, 234, 0.64);
  --on-panel-faint: rgba(244, 241, 234, 0.46);
  --panel-line: rgba(244, 241, 234, 0.12);

  --mark-block: #F4F1EA;
  --nav-scrolled: rgba(16, 19, 22, 0.84);
  --hero-line: rgba(91, 124, 141, 0.22);
  --mark-shadow: rgba(0, 0, 0, 0.5);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
  transition: background 0.4s var(--ease), color 0.4s var(--ease);
}

::selection { background: var(--ember); color: #F4F1EA; }

a { color: inherit; text-decoration: none; }
img, svg { display: block; }

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

/* ---------- mark (theme-adaptive: holes are transparent, so they show whatever's behind) ---------- */
.ks { width: 100%; height: 100%; display: block; }
.ks-block { fill: var(--mark-block); }
.ks-seam { fill: var(--ember); }

/* ---------- type ---------- */
h1, h2, h3 { font-family: var(--font-display); font-weight: 500; letter-spacing: -0.02em; line-height: 1.04; }

.eyebrow {
  font-family: var(--font-mono); font-size: 0.72rem; font-weight: 500;
  letter-spacing: 0.24em; text-transform: uppercase; color: var(--text-faint);
  display: inline-flex; align-items: center; gap: 0.6rem;
}
.eyebrow .num { color: var(--ember); }
.eyebrow::before { content: ""; width: 26px; height: 1px; background: var(--line-2); }

.lead { font-size: clamp(1.05rem, 1.6vw, 1.3rem); color: var(--text-muted); line-height: 1.55; max-width: 42ch; }

/* ---------- layout ---------- */
.wrap { max-width: var(--wrap); margin-inline: auto; padding-inline: var(--gut); }
section { position: relative; }
.section-pad { padding-block: clamp(4.5rem, 9vw, 8.5rem); }

.seam { height: 1px; background: var(--line); position: relative; }
.seam::after { content: ""; position: absolute; left: var(--gut); top: 0; width: 64px; height: 1px; background: var(--ember); }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 0.6rem;
  font-family: var(--font-mono); font-size: 0.8rem; font-weight: 500;
  letter-spacing: 0.06em; padding: 0.85rem 1.4rem; border-radius: 2px;
  border: 1px solid var(--text); background: transparent; color: var(--text);
  cursor: pointer; transition: background 0.35s var(--ease), color 0.35s var(--ease), border-color 0.35s var(--ease), transform 0.2s var(--ease);
}
.btn .arr { transition: transform 0.35s var(--ease); }
.btn:hover { background: var(--text); color: var(--bg); }
.btn:hover .arr { transform: translateX(4px); }
.btn--ember { background: var(--ember); border-color: var(--ember); color: #F4F1EA; }
.btn--ember:hover { background: var(--ember-deep); border-color: var(--ember-deep); color: #F4F1EA; }

/* ---------- wordmark ---------- */
.lockup { display: inline-flex; align-items: center; gap: 0.7rem; }
.lockup .mark { width: 30px; height: 30px; flex: none; }
.wordmark { display: flex; flex-direction: column; line-height: 1; }
.wm-1 { font-family: var(--font-display); font-weight: 500; font-size: 1.06rem; letter-spacing: -0.01em; color: var(--text); }
.wm-2 { font-family: var(--font-display); font-weight: 400; font-size: 0.5rem; letter-spacing: 0.34em; color: var(--text-faint); margin-top: 3px; }

/* ---------- nav ---------- */
.nav {
  position: fixed; inset: 0 0 auto 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 1.1rem var(--gut); background: transparent; border-bottom: 1px solid transparent;
  transition: background 0.4s var(--ease), border-color 0.4s var(--ease), padding 0.4s var(--ease);
}
.nav.scrolled {
  background: var(--nav-scrolled); backdrop-filter: blur(14px) saturate(1.2);
  border-bottom-color: var(--line); padding-block: 0.8rem;
}
.nav-right { display: flex; align-items: center; gap: 1rem; }
.nav-links { display: flex; align-items: center; gap: 2rem; }
.nav-links a.lnk {
  font-family: var(--font-mono); font-size: 0.78rem; letter-spacing: 0.04em; color: var(--text-muted);
  position: relative; padding-block: 0.3rem; transition: color 0.3s var(--ease);
}
.nav-links a.lnk::after { content: ""; position: absolute; left: 0; bottom: 0; width: 100%; height: 1px; background: var(--ember); transform: scaleX(0); transform-origin: left; transition: transform 0.35s var(--ease); }
.nav-links a.lnk:hover, .nav-links a.lnk[aria-current="page"] { color: var(--text); }
.nav-links a.lnk:hover::after, .nav-links a.lnk[aria-current="page"]::after { transform: scaleX(1); }

.theme-toggle, .nav-toggle { display: inline-flex; align-items: center; justify-content: center; background: transparent; border: 1px solid var(--line-2); color: var(--text); cursor: pointer; border-radius: 2px; width: 38px; height: 38px; transition: border-color 0.3s var(--ease), background 0.3s var(--ease); }
.theme-toggle:hover, .nav-toggle:hover { border-color: var(--text); }
.theme-toggle svg, .nav-toggle svg { width: 18px; height: 18px; }
.nav-toggle { display: none; border-color: transparent; }
.i-sun { display: none; }
.i-moon { display: block; }
:root[data-theme="dark"] .i-moon { display: none; }
:root[data-theme="dark"] .i-sun { display: block; }

/* ---------- hero ---------- */
.hero { position: relative; padding-top: clamp(8rem, 16vh, 11rem); padding-bottom: clamp(3rem, 6vw, 5rem); overflow: hidden; }
.hero-grid { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: clamp(2rem, 5vw, 4rem); align-items: center; }
.hero h1 { font-size: clamp(2.6rem, 7vw, 5.2rem); margin-top: 1.6rem; letter-spacing: -0.035em; }
.hero h1 .dot { color: var(--ember); }
.hero .lead { margin-top: 1.8rem; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 0.9rem; margin-top: 2.4rem; }
.hero-meta { display: flex; gap: 2.2rem; margin-top: 3.2rem; flex-wrap: wrap; }
.hero-meta .m-k { font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: 0.16em; text-transform: uppercase; color: var(--text-faint); }
.hero-meta .m-v { font-family: var(--font-display); font-size: 1.5rem; font-weight: 500; margin-top: 0.2rem; }

.hero-art { position: relative; display: grid; place-items: center; min-height: 320px; }
.hero-art .mark-xl { width: clamp(190px, 26vw, 300px); position: relative; z-index: 2; }
.hero-art .mark-xl .ks { filter: drop-shadow(0 30px 50px var(--mark-shadow)); }
.hero-horizon {
  position: absolute; inset: 0; z-index: 1;
  background-image: repeating-linear-gradient(to bottom, transparent 0 33px, var(--hero-line) 33px 34px);
  -webkit-mask-image: radial-gradient(120% 80% at 60% 50%, #000 30%, transparent 72%);
  mask-image: radial-gradient(120% 80% at 60% 50%, #000 30%, transparent 72%);
}
.hero-horizon::after { content: ""; position: absolute; left: 8%; right: 8%; top: 58%; height: 2px; background: var(--ember); opacity: 0.85; }

/* ---------- thesis ---------- */
.thesis-grid { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: clamp(2rem, 6vw, 5rem); align-items: start; }
.thesis h2 { font-size: clamp(2rem, 4.2vw, 3.2rem); margin-top: 1.4rem; }
.thesis h2 em { font-style: normal; color: var(--ember); }
.principles { display: grid; gap: 0; border-top: 1px solid var(--line); }
.principle { display: grid; grid-template-columns: auto 1fr; gap: 1.4rem; padding: 1.6rem 0; border-bottom: 1px solid var(--line); }
.principle .p-n { font-family: var(--font-mono); font-size: 0.78rem; color: var(--ember); padding-top: 0.35rem; }
.principle h3 { font-size: 1.18rem; font-weight: 500; }
.principle p { color: var(--text-muted); font-size: 0.98rem; margin-top: 0.4rem; line-height: 1.6; }
.text-link { display: inline-flex; align-items: center; gap: 0.5rem; margin-top: 2rem; font-family: var(--font-mono); font-size: 0.82rem; color: var(--ember); }
.text-link .arr { transition: transform 0.3s var(--ease); }
.text-link:hover .arr { transform: translateX(4px); }

/* ---------- work ---------- */
.work { background: var(--bg-soft); }
.work-head { display: flex; justify-content: space-between; align-items: flex-end; flex-wrap: wrap; gap: 1.5rem; }
.work-head h2 { font-size: clamp(2rem, 4.2vw, 3.2rem); margin-top: 1.2rem; max-width: 16ch; }
.work-head .note { font-family: var(--font-mono); font-size: 0.76rem; color: var(--text-faint); letter-spacing: 0.04em; }
.grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); margin-top: 3rem; }
.card { background: var(--card); padding: 1.7rem 1.6rem 1.5rem; position: relative; display: flex; flex-direction: column; min-height: 230px; transition: background 0.35s var(--ease); overflow: hidden; }
.card::after { content: ""; position: absolute; left: 0; bottom: 0; height: 2px; width: 100%; background: var(--ember); transform: scaleX(0); transform-origin: left; transition: transform 0.45s var(--ease); }
.card:hover { background: var(--card-hover); }
.card:hover::after { transform: scaleX(1); }
.card-top { display: flex; justify-content: space-between; align-items: center; }
.card-icon { width: 56px; height: 56px; border-radius: 14px; display: block; flex: none; object-fit: cover; }
.card-idx { font-family: var(--font-mono); font-size: 0.74rem; color: var(--text-faint); letter-spacing: 0.04em; }
.tag { font-family: var(--font-mono); font-size: 0.64rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--steel); border: 1px solid var(--line-2); border-radius: 2px; padding: 0.2rem 0.5rem; }
.card h3 { font-size: 1.42rem; font-weight: 500; margin-top: 1.5rem; }
.card p { color: var(--text-muted); font-size: 0.93rem; line-height: 1.55; margin-top: 0.55rem; }
.card-foot { margin-top: auto; padding-top: 1.3rem; display: flex; align-items: center; justify-content: space-between; }
.status { font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: 0.05em; color: var(--text-faint); display: inline-flex; align-items: center; gap: 0.5rem; }
.status .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--steel); }
.status.live .dot { background: var(--ember); }
.status.build .dot { background: var(--brass); }
.card .go { color: var(--text); opacity: 0; transform: translateX(-6px); transition: opacity 0.35s var(--ease), transform 0.35s var(--ease); }
.card:hover .go { opacity: 1; transform: translateX(0); }

/* ---------- process (approach page) ---------- */
.process { margin-top: 3rem; border-top: 1px solid var(--line); }
.step { display: grid; grid-template-columns: 3rem 1fr; gap: 1.4rem; padding: 1.7rem 0.2rem; border-bottom: 1px solid var(--line); align-items: start; }
.step-n { font-family: var(--font-mono); font-size: 0.95rem; font-weight: 500; color: var(--ember); padding-top: 0.2rem; }
.step h3 { font-size: 1.3rem; font-weight: 500; }
.step p { color: var(--text-muted); margin-top: 0.45rem; line-height: 1.6; max-width: 56ch; }

/* ---------- pull quote ---------- */
.pullquote { padding-block: clamp(3.5rem, 8vw, 7rem); text-align: center; }
.pullquote p { font-family: var(--font-display); font-weight: 500; font-size: clamp(2rem, 5.4vw, 3.7rem); letter-spacing: -0.025em; line-height: 1.08; max-width: 20ch; margin-inline: auto; }
.pullquote .dot { color: var(--ember); }

/* ---------- on-chain band ---------- */
.band { background: var(--panel); color: var(--on-panel); overflow: hidden; position: relative; border-block: 1px solid var(--line); }
.band::before {
  content: ""; position: absolute; inset: 0;
  background-image: repeating-linear-gradient(to bottom, transparent 0 47px, rgba(244,241,234,0.05) 47px 48px);
  -webkit-mask-image: radial-gradient(100% 100% at 80% 0%, #000, transparent 70%);
  mask-image: radial-gradient(100% 100% at 80% 0%, #000, transparent 70%);
}
.band .wrap { position: relative; z-index: 2; }
.band .eyebrow { color: var(--brass); }
.band .eyebrow::before { background: rgba(200, 146, 74, 0.5); }
.band .eyebrow .num { color: var(--brass); }
.band-grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2rem, 6vw, 5rem); align-items: center; }
.band h2 { font-size: clamp(1.9rem, 3.8vw, 3rem); margin-top: 1.4rem; }
.band h2 .brass { color: var(--brass); }
.band p { color: var(--on-panel-muted); font-size: 1.05rem; line-height: 1.6; margin-top: 1.4rem; max-width: 46ch; }
.band .mono-line { font-family: var(--font-mono); font-size: 0.8rem; color: var(--on-panel-faint); letter-spacing: 0.05em; margin-top: 2rem; border-left: 2px solid var(--brass); padding-left: 1rem; }

/* ---------- contact / cta ---------- */
.contact h2 { font-size: clamp(2.4rem, 6vw, 4.6rem); max-width: 14ch; margin-top: 1.4rem; }
.contact h2 .dot { color: var(--ember); }
.contact-row { display: flex; flex-wrap: wrap; gap: 3rem 4rem; margin-top: 3rem; align-items: flex-end; }
.contact-block .c-k { font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: 0.16em; text-transform: uppercase; color: var(--text-faint); }
.contact-block .c-v { font-family: var(--font-display); font-size: clamp(1.2rem, 2.4vw, 1.7rem); font-weight: 500; margin-top: 0.45rem; display: inline-flex; align-items: center; gap: 0.5rem; }
.contact-block a.c-v { position: relative; }
.contact-block a.c-v::after { content: ""; position: absolute; left: 0; bottom: -3px; width: 100%; height: 1.5px; background: var(--ember); transform: scaleX(0); transform-origin: left; transition: transform 0.35s var(--ease); }
.contact-block a.c-v:hover::after { transform: scaleX(1); }
.handles { display: flex; gap: 1.4rem; }
.handles a { font-family: var(--font-mono); font-size: 0.82rem; color: var(--text-muted); transition: color 0.3s var(--ease); }
.handles a:hover { color: var(--ember); }
.cta-center { text-align: center; }
.cta-center h2 { margin-inline: auto; }
.cta-center .hero-cta { justify-content: center; }

/* ---------- footer ---------- */
.footer { background: var(--panel); color: var(--on-panel); padding-block: clamp(3rem, 6vw, 4.5rem) 2rem; border-top: 1px solid var(--line); --mark-block: #F4F1EA; }
.footer .wm-1 { color: var(--on-panel); }
.footer .wm-2 { color: var(--on-panel-faint); }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 2.5rem; }
.footer .tagline { color: var(--on-panel-muted); font-size: 0.92rem; margin-top: 1.2rem; max-width: 32ch; }
.fcol h4 { font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: 0.16em; text-transform: uppercase; color: var(--brass); font-weight: 500; margin-bottom: 1rem; }
.fcol a { display: block; color: var(--on-panel-muted); font-size: 0.92rem; padding-block: 0.32rem; transition: color 0.3s var(--ease); }
.fcol a:hover { color: var(--on-panel); }
.footer-bottom { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 1rem; margin-top: clamp(2.5rem, 5vw, 4rem); padding-top: 1.6rem; border-top: 1px solid var(--panel-line); }
.footer-bottom p { font-family: var(--font-mono); font-size: 0.72rem; color: var(--on-panel-faint); letter-spacing: 0.04em; }

/* ---------- reveal ---------- */
html.js .reveal { opacity: 0; transform: translateY(22px); transition: opacity 0.8s var(--ease), transform 0.8s var(--ease); }
html.js .reveal.in { opacity: 1; transform: none; }
html.js .reveal[data-d="1"] { transition-delay: 0.08s; }
html.js .reveal[data-d="2"] { transition-delay: 0.16s; }
html.js .reveal[data-d="3"] { transition-delay: 0.24s; }

@keyframes fadeUp { from { opacity: 0; transform: translateY(26px); } to { opacity: 1; transform: none; } }
html.js .hero .anim { opacity: 0; animation: fadeUp 0.9s var(--ease) forwards; }
html.js .hero .anim[data-d="0"] { animation-delay: 0.1s; }
html.js .hero .anim[data-d="1"] { animation-delay: 0.24s; }
html.js .hero .anim[data-d="2"] { animation-delay: 0.38s; }
html.js .hero .anim[data-d="3"] { animation-delay: 0.52s; }
html.js .hero .anim[data-d="4"] { animation-delay: 0.66s; }

@media (prefers-reduced-motion: reduce) {
  html.js .reveal, html.js .hero .anim { opacity: 1 !important; transform: none !important; animation: none !important; transition: none !important; }
  .card::after, .nav-links a.lnk::after, .btn .arr, body { transition: none !important; }
}

/* ---------- responsive ---------- */
@media (max-width: 980px) {
  .hero-grid, .thesis-grid, .band-grid { grid-template-columns: 1fr; }
  .hero-art { order: -1; min-height: 220px; }
  .hero-art .mark-xl { width: 150px; }
  .grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  body { font-size: 16px; }
  .nav-links { position: fixed; inset: 0 0 0 auto; width: min(80vw, 320px); flex-direction: column; align-items: flex-start; justify-content: center; gap: 1.6rem; padding: 2rem; background: var(--panel); transform: translateX(100%); transition: transform 0.45s var(--ease); }
  .nav-links.open { transform: none; }
  .nav-links a.lnk { color: var(--on-panel); font-size: 1.1rem; }
  .nav-links a.lnk:hover, .nav-links a.lnk[aria-current="page"] { color: #fff; }
  .nav-links .btn { color: #F4F1EA; border-color: var(--panel-line); }
  .nav-links .btn--ember { border-color: var(--ember); }
  .nav-toggle { display: inline-flex; z-index: 101; }
  .theme-toggle { z-index: 101; }
  .grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 1.8rem; }
  .hero-meta { gap: 1.5rem; }
}