/* =========================================================
   Entonces — shared design tokens + components
   Aesthetic: editorial operator. Warm off-black paper,
   Instrument Serif display, mono operator labels, sulfur accent.
   ========================================================= */

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  /* palette */
  --ink:        #0E0D0B;   /* warm off-black */
  --ink-2:      #141310;
  --paper:      #F2EEE6;   /* warm paper */
  --paper-2:    #E8E2D4;
  --fog:        #2A2722;
  --fog-2:      #1A1815;
  --line:       #2A2722;
  --line-soft:  #1F1D19;
  --text:       #F2EEE6;
  --text-dim:   #B8B0A2;
  --text-mute:  #7A7368;

  /* accents */
  --sulfur:     oklch(86% 0.17 98);
  --sulfur-2:   oklch(74% 0.16 95);
  --rust:       oklch(64% 0.14 45);
  --rust-2:     oklch(54% 0.13 42);

  /* type */
  --f-display:  "Instrument Serif", "Times New Roman", serif;
  --f-sans:     "Inter Tight", -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
  --f-mono:     "JetBrains Mono", "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;

  /* spacing / radius */
  --r-sm: 6px;
  --r-md: 10px;
  --r-lg: 16px;

  --gutter: 40px;
  --max: 1320px;

  /* layered page */
  --grid-alpha: 0.04;
}

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--f-sans);
  background: var(--ink);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  font-feature-settings: "ss01", "cv11";
}

/* Subtle paper-grain + horizontal rule grid overlay behind everything */
body::before {
  content: "";
  position: fixed; inset: 0;
  pointer-events: none;
  z-index: 1;
  background-image:
    repeating-linear-gradient(to bottom, transparent 0 47px, rgba(242,238,230,var(--grid-alpha)) 47px 48px);
  mix-blend-mode: overlay;
  opacity: 0.5;
}

body::after {
  content: "";
  position: fixed; inset: 0;
  pointer-events: none;
  z-index: 1;
  background-image: radial-gradient(rgba(242,238,230,0.025) 1px, transparent 1px);
  background-size: 3px 3px;
  opacity: 0.6;
}

@media (pointer: coarse) { body { cursor: auto; } }

a { color: inherit; text-decoration: none; }

::selection { background: var(--sulfur); color: var(--ink); }

/* -------- Custom cursor -------- */
.cursor-ring {
  position: fixed; top: 0; left: 0;
  width: 28px; height: 28px;
  border: 1px solid var(--paper);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
  z-index: 9999;
  mix-blend-mode: difference;
  transition: width 180ms ease, height 180ms ease, border-color 180ms ease, background-color 180ms ease;
  will-change: transform;
}
.cursor-ring.is-hover {
  width: 56px; height: 56px;
  background: var(--sulfur);
  border-color: var(--sulfur);
  mix-blend-mode: normal;
}
.cursor-ring.is-down { transform: translate(-50%, -50%) scale(0.85); }
.cursor-dot {
  position: fixed; top: 0; left: 0;
  width: 4px; height: 4px;
  background: var(--paper);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
  z-index: 9999;
  mix-blend-mode: difference;
  will-change: transform;
}
@media (pointer: coarse) { .cursor-ring, .cursor-dot { display: none; } }

/* -------- Type scales -------- */
.mono {
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-weight: 500;
  color: var(--text-mute);
}
.mono-sm { font-size: 10px; }
.mono-lg { font-size: 12px; }

.serif {
  font-family: var(--f-display);
  font-weight: 400;
  letter-spacing: -0.02em;
  line-height: 0.98;
}

.em {
  font-family: var(--f-display);
  font-style: italic;
  font-weight: 400;
  letter-spacing: -0.01em;
  color: var(--sulfur);
}

/* -------- Nav -------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  padding: 18px var(--gutter);
  background: color-mix(in oklab, var(--ink) 72%, transparent);
  backdrop-filter: blur(16px) saturate(120%);
  -webkit-backdrop-filter: blur(16px) saturate(120%);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s ease, padding 0.3s ease;
}
.nav.scrolled { border-color: var(--line-soft); padding: 12px var(--gutter); }

.nav-left { display: flex; align-items: center; gap: 12px; }
.nav-left .mono { color: var(--text-mute); }

.nav-logo {
  display: inline-flex; align-items: center; gap: 10px;
  cursor: pointer; background: none; border: none; padding: 4px;
}
.nav-logo .mark { width: 58px; height: 18px; }
.nav-logo .wordmark {
  font-family: var(--f-display);
  font-size: 22px;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.nav-links {
  display: flex; align-items: center; gap: 28px;
  justify-content: center;
}
.nav-links a {
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-dim);
  transition: color 0.2s;
  position: relative;
  padding: 6px 0;
}
.nav-links a:hover { color: var(--paper); }
.nav-links a.active { color: var(--sulfur); }
.nav-links a.active::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 0;
  height: 1px; background: var(--sulfur);
}

.nav-right { display: flex; justify-content: flex-end; align-items: center; gap: 12px; }

.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 12px 20px;
  border-radius: 999px;
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-weight: 500;
  border: 1px solid var(--line);
  color: var(--paper);
  background: transparent;
  transition: background 0.25s, color 0.25s, border-color 0.25s, transform 0.15s;
  cursor: pointer;
}
.btn:hover { border-color: var(--paper); }
.btn:active { transform: translateY(1px); }

.btn-primary {
  background: var(--sulfur); color: var(--ink); border-color: var(--sulfur);
}
.btn-primary:hover { background: var(--paper); border-color: var(--paper); }

.btn-large { padding: 16px 28px; font-size: 12px; }

.btn .arrow {
  display: inline-block; transition: transform 0.25s;
}
.btn:hover .arrow { transform: translateX(4px); }

/* -------- Hamburger / mobile menu -------- */
.hamburger { display: none; background: none; border: none; padding: 6px; cursor: pointer; }
.hamburger .bar { display: block; width: 22px; height: 1.5px; background: var(--paper); margin: 5px 0; transition: transform 0.25s; }
.mobile-menu {
  display: none; position: fixed; inset: 0; z-index: 150;
  background: color-mix(in oklab, var(--ink) 97%, transparent);
  backdrop-filter: blur(20px);
  flex-direction: column; align-items: center; justify-content: center;
  gap: 28px; opacity: 0; pointer-events: none;
  transition: opacity 0.3s;
  padding: 32px;
}
.mobile-menu.open { opacity: 1; pointer-events: auto; }
.mobile-menu a {
  font-family: var(--f-display);
  font-size: 40px;
  letter-spacing: -0.02em;
  color: var(--paper);
}
.mobile-menu a.em { color: var(--sulfur); font-style: italic; }

/* -------- Chapters rail (fixed side) -------- */
.chapters {
  position: fixed;
  left: 24px; top: 50%;
  transform: translateY(-50%);
  z-index: 90;
  display: flex; flex-direction: column; gap: 14px;
  pointer-events: auto;
}
.chapter {
  display: flex; align-items: center; gap: 10px;
  font-family: var(--f-mono); font-size: 10px; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--text-mute);
  transition: color 0.25s;
  cursor: pointer;
}
.chapter::before {
  content: ""; width: 14px; height: 1px; background: currentColor;
  transition: width 0.25s, background 0.25s;
}
.chapter:hover { color: var(--paper); }
.chapter.active { color: var(--sulfur); }
.chapter.active::before { width: 28px; background: var(--sulfur); }

@media (max-width: 1100px) { .chapters { display: none; } }

/* -------- Reveal -------- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal.delay-1 { transition-delay: 0.08s; }
.reveal.delay-2 { transition-delay: 0.16s; }
.reveal.delay-3 { transition-delay: 0.24s; }

/* -------- Split text -------- */
.split-char { display: inline-block; opacity: 0; transform: translateY(60%); transition: opacity 0.8s cubic-bezier(.2,.8,.2,1), transform 0.8s cubic-bezier(.2,.8,.2,1); }
.split-char.in { opacity: 1; transform: translateY(0); }

/* -------- Section scaffolding -------- */
section { position: relative; z-index: 2; }
.section-pad { padding: 120px var(--gutter); }
.section-pad-sm { padding: 80px var(--gutter); }
.section-inner { max-width: var(--max); margin: 0 auto; }

.sec-head {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 80px;
  align-items: end;
  margin-bottom: 80px;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--line-soft);
}
.sec-head .label { display: flex; align-items: baseline; gap: 12px; }
.sec-head .label .num { font-family: var(--f-mono); font-size: 11px; color: var(--sulfur); letter-spacing: 0.12em; }
.sec-head .label .tag { font-family: var(--f-mono); font-size: 11px; color: var(--text-mute); letter-spacing: 0.14em; text-transform: uppercase; }
.sec-head h2 {
  font-family: var(--f-display);
  font-weight: 400;
  font-size: clamp(40px, 6vw, 72px);
  line-height: 0.98;
  letter-spacing: -0.02em;
}
.sec-head h2 .em { font-family: var(--f-display); font-style: italic; color: var(--sulfur); }

@media (max-width: 900px) {
  .sec-head { grid-template-columns: 1fr; gap: 20px; margin-bottom: 48px; }
}

/* -------- CTA (shared across pages) -------- */
.cta {
  position: relative;
  padding: 160px var(--gutter) 120px;
  border-top: 1px solid var(--line-soft);
  overflow: hidden;
}
.cta::before {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(ellipse 60% 70% at 30% 50%, color-mix(in oklab, var(--sulfur) 9%, transparent), transparent 70%);
  pointer-events: none;
}
.cta-inner { max-width: var(--max); margin: 0 auto; position: relative; z-index: 2; }
.cta-solo { max-width: 820px; margin: 0 auto; text-align: center; display: flex; flex-direction: column; align-items: center; }
.cta .eyebrow {
  font-family: var(--f-mono); font-size: 11px; letter-spacing: 0.16em;
  text-transform: uppercase; color: var(--sulfur);
  display: inline-flex; align-items: center; gap: 10px;
  margin-bottom: 32px;
}
.cta .eyebrow::before { content: ""; width: 28px; height: 1px; background: var(--sulfur); }
.cta h2 {
  font-family: var(--f-display); font-weight: 400;
  font-size: clamp(40px, 9vw, 140px);
  line-height: 0.92; letter-spacing: -0.04em;
  color: var(--paper);
  margin-bottom: 32px;
}
.cta h2 .em { font-style: italic; color: var(--sulfur); }
.cta-lede { font-size: 17px; line-height: 1.6; color: var(--text-dim); max-width: 54ch; margin: 0 auto 40px; }
.cta .actions { display: inline-flex; gap: 12px; flex-wrap: wrap; justify-content: center; }
@media (max-width: 900px) { .cta { padding: 100px var(--gutter) 80px; } }

/* -------- Footer -------- */
.footer {
  position: relative; z-index: 2;
  border-top: 1px solid var(--line);
  padding: 60px var(--gutter) 40px;
}
.footer-top {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 40px;
  max-width: var(--max); margin: 0 auto;
  padding-bottom: 48px;
  align-items: start;
  border-bottom: 1px solid var(--line-soft);
}
.footer-big {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--f-display);
  font-size: 22px;
  letter-spacing: -0.02em;
  line-height: 1;
  color: var(--paper);
}
.footer-big .footer-mark { width: 58px !important; height: 18px !important; margin-bottom: 0 !important; }
.footer-big .em { color: var(--sulfur); }
.footer-col h4 { font-family: var(--f-mono); font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--text-mute); margin-bottom: 16px; font-weight: 500; }
.footer-col a { display: block; color: var(--text-dim); font-size: 14px; padding: 4px 0; transition: color 0.2s; }
.footer-col a:hover { color: var(--sulfur); }
.footer-bottom {
  max-width: var(--max); margin: 0 auto;
  display: flex; justify-content: space-between; gap: 16px;
  padding-top: 24px;
  font-family: var(--f-mono); font-size: 10px; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--text-mute);
}

/* -------- Ticker / marquee -------- */
.ticker {
  display: flex; align-items: center;
  overflow: hidden; position: relative;
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
  background: var(--ink-2);
  padding: 16px 0;
}
.ticker-track {
  display: flex; gap: 48px;
  animation: ticker 45s linear infinite;
  white-space: nowrap; width: max-content;
}
.ticker-item {
  font-family: var(--f-mono);
  font-size: 12px; letter-spacing: 0.08em;
  color: var(--text-dim);
  text-transform: uppercase;
  display: inline-flex; align-items: center; gap: 16px;
}
.ticker-item .dot { width: 5px; height: 5px; border-radius: 50%; background: var(--sulfur); }
.ticker-item strong { color: var(--paper); font-weight: 500; }
.ticker-item .num { color: var(--sulfur); }
@keyframes ticker { from { transform: translateX(0); } to { transform: translateX(-50%); } }

/* -------- Logo bar -------- */
.logo-bar {
  position: relative; z-index: 2;
  padding: 48px 0;
  border-bottom: 1px solid var(--line-soft);
  overflow: hidden;
}
.logo-bar::before, .logo-bar::after {
  content: ''; position: absolute; top: 0; bottom: 0; width: 120px; z-index: 3;
  pointer-events: none;
}
.logo-bar::before { left: 0; background: linear-gradient(90deg, var(--ink), transparent); }
.logo-bar::after  { right: 0; background: linear-gradient(-90deg, var(--ink), transparent); }
.logo-track {
  display: flex; align-items: center; width: max-content;
  animation: ticker 55s linear infinite;
}
.logo-item {
  flex-shrink: 0; padding: 0 56px;
  display: flex; align-items: center; justify-content: center;
}
.logo-item img, .logo-item svg {
  height: 26px; width: auto; max-width: 140px;
  opacity: 0.45;
  filter: grayscale(1) brightness(1.2);
  object-fit: contain;
  transition: opacity 0.25s, filter 0.25s;
}
.logo-bar:hover .logo-item img,
.logo-bar:hover .logo-item svg { opacity: 0.85; filter: grayscale(0) brightness(1); }

/* -------- Tweak panel -------- */
.tweaks-toggle-hint {
  position: fixed; bottom: 24px; left: 24px;
  font-family: var(--f-mono); font-size: 10px; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--text-mute);
  z-index: 50;
  display: flex; align-items: center; gap: 8px;
  pointer-events: none;
}
.tweaks-panel {
  position: fixed; bottom: 24px; right: 24px;
  width: 300px;
  background: var(--ink-2);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 20px;
  z-index: 300;
  transform: translateY(120%);
  transition: transform 0.35s cubic-bezier(.2,.8,.2,1);
  box-shadow: 0 20px 60px rgba(0,0,0,0.5);
}
.tweaks-panel.active { transform: translateY(0); }
.tweaks-panel h3 {
  font-family: var(--f-mono); font-size: 11px; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--text-mute); margin-bottom: 16px;
  display: flex; justify-content: space-between; align-items: center;
}
.tweaks-row { display: flex; justify-content: space-between; align-items: center; padding: 10px 0; border-top: 1px solid var(--line-soft); gap: 12px; }
.tweaks-row:first-of-type { border-top: none; }
.tweaks-row label { font-family: var(--f-mono); font-size: 11px; color: var(--text-dim); letter-spacing: 0.08em; text-transform: uppercase; }
.swatches { display: flex; gap: 6px; }
.swatch {
  width: 22px; height: 22px; border-radius: 50%;
  border: 1px solid var(--line);
  cursor: pointer;
  transition: transform 0.2s;
}
.swatch.on { border: 1.5px solid var(--paper); transform: scale(1.1); }
.segbtn { display: flex; background: var(--ink); border: 1px solid var(--line); border-radius: 999px; padding: 2px; }
.segbtn button {
  font-family: var(--f-mono); font-size: 10px; letter-spacing: 0.1em; text-transform: uppercase;
  padding: 6px 12px; border: none; background: transparent; color: var(--text-dim); border-radius: 999px; cursor: pointer;
}
.segbtn button.on { background: var(--sulfur); color: var(--ink); }

/* -------- Utilities -------- */
.hidden { display: none !important; }
.num-mono { font-variant-numeric: tabular-nums; font-feature-settings: "tnum"; }

/* -------- Responsive base -------- */
@media (max-width: 900px) {
  :root { --gutter: 24px; }
  .section-pad { padding: 80px var(--gutter); }
  .section-pad-sm { padding: 56px var(--gutter); }
  .nav-links { display: none; }
  .hamburger { display: inline-flex; flex-direction: column; }
  .mobile-menu { display: flex; }
  .footer-top { grid-template-columns: 1fr 1fr; }
  /* CTA shrinks on tablet */
  .cta h2 { font-size: clamp(40px, 8vw, 72px); }
  .cta .eyebrow { margin-bottom: 20px; }
  .cta-lede { font-size: 15px; margin-bottom: 28px; }
  .cta { padding: 100px var(--gutter) 80px; }
  .btn-large { padding: 14px 22px; font-size: 11px; }
  /* Section heads already collapse via their own @media */
}

@media (max-width: 560px) {
  :root { --gutter: 20px; }
  .section-pad { padding: 64px var(--gutter); }
  .section-pad-sm { padding: 44px var(--gutter); }
  .nav { padding: 14px var(--gutter); }
  .nav-logo .mark { width: 48px; height: 14px; }
  .nav-logo .wordmark { font-size: 18px; }
  .nav-right .btn { padding: 10px 14px; font-size: 10px; letter-spacing: 0.1em; }
  .nav-right .btn .arrow { display: none; }
  .footer-top { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; align-items: flex-start; gap: 8px; font-size: 9px; }
  .tweaks-panel { left: 20px; right: 20px; width: auto; bottom: 20px; }
  .tweaks-toggle-hint { display: none; }
  .mobile-menu a { font-size: 32px; }
  /* Buttons wrap full width */
  .hero-actions, .cta .actions, .agents-hero .actions, .actions {
    width: 100%;
    flex-direction: column;
    align-items: stretch;
  }
  .hero-actions .btn, .cta .actions .btn, .agents-hero .actions .btn, .actions .btn {
    justify-content: center;
    width: 100%;
  }
  .cta h2 { font-size: clamp(36px, 11vw, 56px); margin-bottom: 24px; }
  .cta { padding: 72px var(--gutter) 64px; }
  .cta-lede { font-size: 14px; }
  /* Big serif heads scale down */
  .sec-head h2 { font-size: clamp(32px, 9vw, 48px); }
  /* Ticker + logo bar: keep overflow clean, reduce padding */
  .logo-bar { padding: 32px 0; }
  .logo-item { padding: 0 28px; }
  .logo-item img, .logo-item svg { height: 20px; max-width: 100px; }
  .ticker { padding: 12px 0; }
  .ticker-item { font-size: 11px; gap: 10px; }
  /* Custom cursor hidden on touch already, just a belt-and-braces */
  .cursor-ring, .cursor-dot { display: none; }
  /* Tweak panel row layout on tiny screens */
  .tweaks-row { flex-wrap: wrap; }
}

@media (max-width: 400px) {
  .nav-right .btn { padding: 8px 12px; }
}

/* -------- Print-safe for share -------- */
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}