/* ==========================================================================
   AXIOM REGIME — Design Tokens & Base
   ========================================================================== */

:root {
  /* Color: near-black cool navy ground, warm off-white ink, single muted
     gold accent. Risk-off / risk-on use desaturated clay & sage rather than
     retail red/green so regime markers stay legible without shouting. */
  --color-bg: #0a0c10;
  --color-bg-raised: #0e1116;
  --color-bg-panel: #12161c;
  --color-bg-panel-2: #161b22;

  --color-ink: #eae6da;
  --color-ink-dim: #8d93a0;
  --color-ink-faint: #565c67;

  --color-accent: #b6935c;
  --color-accent-bright: #d3ac74;
  --color-accent-soft: rgba(182, 147, 92, 0.12);
  --color-accent-line: rgba(182, 147, 92, 0.35);

  --color-riskoff: #a8623f;
  --color-riskon: #64826c;
  --color-neutral: #7c8290;

  --color-line: rgba(234, 230, 218, 0.09);
  --color-line-strong: rgba(234, 230, 218, 0.17);
  --color-line-accent: rgba(182, 147, 92, 0.4);

  --color-overlay: rgba(10, 12, 16, 0.86);

  /* Type */
  --font-display: "Newsreader", "Iowan Old Style", "Palatino Linotype", serif;
  --font-body: "Inter", -apple-system, "Segoe UI", sans-serif;
  --font-mono: "IBM Plex Mono", "SF Mono", monospace;

  --fs-display-xl: clamp(2.75rem, 4.4vw + 1rem, 5.1rem);
  --fs-display-l: clamp(2.1rem, 2.6vw + 1rem, 3.4rem);
  --fs-display-m: clamp(1.6rem, 1.4vw + 1rem, 2.15rem);
  --fs-body-l: 1.15rem;
  --fs-body: 1rem;
  --fs-body-s: 0.9rem;
  --fs-label: 0.78rem;

  --lh-tight: 1.12;
  --lh-snug: 1.32;
  --lh-body: 1.62;

  /* Layout */
  --max-width: 1288px;
  --gutter: clamp(24px, 4vw, 64px);
  --section-pad: clamp(72px, 9vw, 148px);
  --radius-s: 2px;
  --radius-m: 3px;

  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

@media (prefers-color-scheme: light) {
  :root { color-scheme: dark; }
}

* { box-sizing: border-box; }

html {
  background: var(--color-bg);
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: var(--lh-body);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  background-image:
    linear-gradient(var(--color-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-line) 1px, transparent 1px);
  background-size: 96px 96px;
  background-position: center top;
  background-attachment: fixed;
  opacity: 0;
  animation: page-in 0.6s var(--ease-out) forwards;
}

@keyframes page-in {
  from { opacity: 0; }
  to { opacity: 1; }
}

img { max-width: 100%; display: block; }
svg { display: block; }

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

h1, h2, h3, h4 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 500;
  line-height: var(--lh-tight);
  letter-spacing: -0.01em;
  color: var(--color-ink);
}

p { margin: 0; }

ul, ol { margin: 0; padding: 0; list-style: none; }

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
}

button { cursor: pointer; background: none; border: none; padding: 0; }

::selection {
  background: var(--color-accent-soft);
  color: var(--color-accent-bright);
}

:focus-visible {
  outline: 1.5px solid var(--color-accent-bright);
  outline-offset: 3px;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}

.section {
  padding-top: var(--section-pad);
  padding-bottom: var(--section-pad);
  border-bottom: 1px solid var(--color-line);
  position: relative;
}

.section--tight { padding-top: calc(var(--section-pad) * 0.6); padding-bottom: calc(var(--section-pad) * 0.6); }
.section--flush-top { padding-top: 0; border-top: none; }
.section--no-border { border-bottom: none; }
.section--panel { background: var(--color-bg-raised); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent);
}

.eyebrow::before {
  content: "";
  width: 18px;
  height: 1px;
  background: var(--color-accent-line);
}

.section-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: var(--gutter);
  margin-bottom: clamp(36px, 4vw, 64px);
  flex-wrap: wrap;
}

.section-head h2 {
  font-size: var(--fs-display-l);
  max-width: 14ch;
}

.section-head__note {
  max-width: 34ch;
  color: var(--color-ink-dim);
  font-size: var(--fs-body-s);
  padding-bottom: 6px;
}

.lede {
  font-family: var(--font-display);
  font-size: var(--fs-body-l);
  line-height: var(--lh-snug);
  color: var(--color-ink);
  max-width: 62ch;
}

.body-text {
  color: var(--color-ink-dim);
  max-width: 58ch;
}

.body-text + .body-text { margin-top: 1em; }

.hairline {
  border: none;
  border-top: 1px solid var(--color-line);
  margin: 0;
}

/* Buttons -------------------------------------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 26px;
  font-family: var(--font-body);
  font-size: var(--fs-body-s);
  font-weight: 500;
  letter-spacing: 0.01em;
  border-radius: var(--radius-s);
  border: 1px solid transparent;
  transition: border-color 0.25s var(--ease-out), background 0.25s var(--ease-out), color 0.25s var(--ease-out);
  white-space: nowrap;
}

.btn--primary {
  background: var(--color-accent);
  color: #14100a;
}
.btn--primary:hover { background: var(--color-accent-bright); }

.btn--ghost {
  border-color: var(--color-line-strong);
  color: var(--color-ink);
}
.btn--ghost:hover { border-color: var(--color-accent-line); color: var(--color-accent-bright); }

.btn--text {
  padding: 0;
  border-bottom: 1px solid var(--color-line-strong);
  border-radius: 0;
  padding-bottom: 2px;
}
.btn--text:hover { border-color: var(--color-accent); color: var(--color-accent-bright); }

/* Tags / chips ----------------------------------------------------------- */

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 5px 10px;
  border: 1px solid var(--color-line-strong);
  color: var(--color-ink-dim);
  border-radius: var(--radius-s);
}

.tag--pending {
  color: var(--color-ink-faint);
  border-style: dashed;
}

.tag--riskoff { color: var(--color-riskoff); border-color: rgba(168, 98, 63, 0.4); }
.tag--riskon { color: var(--color-riskon); border-color: rgba(100, 130, 108, 0.4); }
.tag--accent { color: var(--color-accent-bright); border-color: var(--color-accent-line); }

/* Reveal-on-scroll --------------------------------------------------------*/

.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
}
.reveal.is-visible { opacity: 1; transform: translateY(0); }

/* Scroll progress ---------------------------------------------------------*/

.scroll-progress {
  position: fixed;
  top: 0; left: 0;
  height: 2px;
  width: 0%;
  background: var(--color-accent);
  z-index: 1000;
  transition: width 0.1s linear;
}

/* Back to top ---------------------------------------------------------- */

.back-to-top {
  position: fixed;
  right: clamp(16px, 3vw, 40px);
  bottom: clamp(16px, 3vw, 40px);
  width: 46px;
  height: 46px;
  border: 1px solid var(--color-line-strong);
  background: var(--color-bg-panel);
  color: var(--color-ink);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity 0.3s var(--ease-out), transform 0.3s var(--ease-out), border-color 0.3s;
  z-index: 400;
}
.back-to-top.is-visible { opacity: 1; visibility: visible; transform: translateY(0); }
.back-to-top:hover { border-color: var(--color-accent-line); color: var(--color-accent-bright); }

/* Tooltip ---------------------------------------------------------------*/

[data-tooltip] { position: relative; }
[data-tooltip]::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + 10px);
  left: 50%;
  transform: translateX(-50%) translateY(4px);
  background: var(--color-bg-panel-2);
  border: 1px solid var(--color-line-strong);
  color: var(--color-ink-dim);
  font-family: var(--font-body);
  font-size: 0.76rem;
  padding: 8px 11px;
  border-radius: var(--radius-s);
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s var(--ease-out), transform 0.2s var(--ease-out);
  pointer-events: none;
  z-index: 50;
}
[data-tooltip]:hover::after, [data-tooltip]:focus-visible::after {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

/* Utility ---------------------------------------------------------------*/

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.mono { font-family: var(--font-mono); }
.dim { color: var(--color-ink-dim); }