/* ==========================================================================
   Bluff and Bash - foundation
   Design tokens, reset, typography, buttons, utilities.
   Palette: black pearl + deep teal + platinum + champagne.
   Mobile-first. No external fonts or libraries.
   ========================================================================== */

:root {
  /* Core palette */
  --ink:          #0a0f11;
  --ink-2:        #101a1c;
  --ink-3:        #162427;
  --teal-deep:    #0e3a36;
  --teal:         #1d564f;
  --teal-soft:    #2e7a6e;
  --platinum:     #dde4e3;
  --mist:         #a3b4b2;
  --champagne:    #e7d6ab;
  --brass:        #c0a064;
  --brass-dark:   #9a7c45;
  --paper:        #f7f4ee;
  --paper-2:      #efeae0;
  --paper-3:      #e4ded1;
  --error:        #9c3b2e;

  /* Semantic */
  --bg:           var(--paper);
  --text:         #1a2224;
  --text-soft:    #4e5c5d;
  --rule:         rgba(26, 34, 36, 0.14);
  --rule-dark:    rgba(221, 228, 227, 0.16);

  /* Type */
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, "Book Antiqua", "Hoefler Text", Georgia, serif;
  --sans: "Inter", "Segoe UI", -apple-system, BlinkMacSystemFont, Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: "IBM Plex Mono", "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;

  /* Scale */
  --step--1: clamp(0.78rem, 0.76rem + 0.1vw, 0.84rem);
  --step-0:  clamp(0.98rem, 0.95rem + 0.15vw, 1.06rem);
  --step-1:  clamp(1.12rem, 1.05rem + 0.4vw, 1.3rem);
  --step-2:  clamp(1.35rem, 1.2rem + 0.8vw, 1.75rem);
  --step-3:  clamp(1.6rem, 1.35rem + 1.2vw, 2.2rem);
  --step-4:  clamp(1.85rem, 1.5rem + 1.8vw, 2.8rem);
  --step-5:  clamp(2.1rem, 1.6rem + 2.6vw, 3.5rem);

  /* Space */
  --space-1: 0.4rem;
  --space-2: 0.75rem;
  --space-3: 1.15rem;
  --space-4: 1.75rem;
  --space-5: 2.6rem;
  --space-6: 3.8rem;
  --space-7: 5.5rem;
  --space-8: 7.5rem;

  --shell: 1220px;
  --radius: 2px;
  --radius-lg: 4px;
  --shadow-soft: 0 24px 60px -32px rgba(10, 15, 17, 0.45);
  --shadow-card: 0 1px 0 rgba(255, 255, 255, 0.6) inset, 0 18px 40px -30px rgba(10, 15, 17, 0.5);
  --ease: cubic-bezier(0.2, 0.7, 0.3, 1);
}

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

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: var(--step-0);
  line-height: 1.65;
  font-feature-settings: "kern" 1, "liga" 1;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img, picture, svg { max-width: 100%; height: auto; display: block; }

h1, h2, h3, h4 {
  font-family: var(--serif);
  font-weight: 500;
  line-height: 1.12;
  letter-spacing: -0.012em;
  margin: 0 0 var(--space-3);
  color: var(--ink);
  text-wrap: balance;
}

h1 { font-size: var(--step-5); }
h2 { font-size: var(--step-4); }
h3 { font-size: var(--step-2); }
h4 { font-size: var(--step-1); }

p { margin: 0 0 var(--space-3); }
p:last-child { margin-bottom: 0; }

a { color: var(--teal); text-decoration-thickness: 1px; text-underline-offset: 0.22em; }
a:hover { color: var(--brass-dark); }

ul, ol { margin: 0 0 var(--space-3); padding-left: 1.25rem; }
li { margin-bottom: 0.4rem; }

strong { font-weight: 650; }
code { font-family: var(--mono); font-size: 0.88em; background: rgba(29, 86, 79, 0.1); padding: 0.1em 0.35em; border-radius: var(--radius); }

hr { border: 0; border-top: 1px solid var(--rule); margin: var(--space-5) 0; }

address { font-style: normal; }

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

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

/* ---------- Layout primitives ---------- */
.shell {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: clamp(1.1rem, 4vw, 2.5rem);
}

.shell--narrow { max-width: 820px; }
.shell--wide { max-width: 1420px; }

.band { padding-block: var(--space-7); position: relative; }
.band--tight { padding-block: var(--space-6); }
.band--tall { padding-block: var(--space-8); }

.band--ink { background: var(--ink); color: var(--platinum); }
.band--ink h2, .band--ink h3, .band--ink h4 { color: var(--paper); }
.band--teal { background: var(--teal-deep); color: #dceae7; }
.band--teal h2, .band--teal h3, .band--teal h4 { color: #f1f7f5; }
.band--paper-2 { background: var(--paper-2); }

.band--ink a, .band--teal a { color: var(--champagne); }
.band--ink a:hover, .band--teal a:hover { color: #fff; }

.rule-top { border-top: 1px solid var(--rule); }

/* ---------- Editorial type helpers ---------- */
.eyebrow {
  font-family: var(--sans);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--brass-dark);
  margin: 0 0 var(--space-3);
  display: flex;
  align-items: center;
  gap: 0.7rem;
}
.eyebrow::after {
  content: "";
  flex: 1 1 auto;
  height: 1px;
  background: linear-gradient(90deg, var(--brass) 0%, transparent 85%);
  max-width: 180px;
}
.eyebrow--plain::after { display: none; }
.band--ink .eyebrow, .band--teal .eyebrow { color: var(--champagne); }

.lede {
  font-size: var(--step-1);
  line-height: 1.55;
  color: var(--text-soft);
  max-width: 62ch;
}
.band--ink .lede, .band--teal .lede { color: #c2d2d0; }

.chapter-no {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  color: var(--brass-dark);
}

.quiet { color: var(--text-soft); }
.small { font-size: var(--step--1); }
.measure { max-width: 68ch; }
.center { text-align: center; }
.mt-0 { margin-top: 0; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  font-family: var(--sans);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  text-decoration: none;
  padding: 0.95rem 1.6rem;
  border: 1px solid transparent;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background-color 0.25s var(--ease), color 0.25s var(--ease), border-color 0.25s var(--ease), transform 0.25s var(--ease);
  background: none;
}

.btn--brass {
  background: linear-gradient(180deg, var(--brass) 0%, var(--brass-dark) 100%);
  color: #14110a;
  border-color: var(--brass-dark);
}
.btn--brass:hover { background: var(--champagne); color: var(--ink); transform: translateY(-1px); }

.btn--ink {
  background: var(--ink);
  color: var(--paper);
  border-color: var(--ink);
}
.btn--ink:hover { background: var(--teal); border-color: var(--teal); color: #fff; }

.btn--line {
  border-color: currentColor;
  color: var(--ink);
}
.btn--line:hover { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.band--ink .btn--line, .band--teal .btn--line { color: var(--platinum); }
.band--ink .btn--line:hover, .band--teal .btn--line:hover { background: var(--platinum); color: var(--ink); }

.btn--wide { width: 100%; }

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-3);
  align-items: center;
}

/* Text link with arrow */
.arrow-link {
  display: inline-flex;
  align-items: baseline;
  gap: 0.5rem;
  font-weight: 600;
  font-size: 0.86rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  border-bottom: 1px solid currentColor;
  padding-bottom: 0.2rem;
}
.arrow-link::after { content: "\2192"; transition: transform 0.25s var(--ease); }
.arrow-link:hover::after { transform: translateX(4px); }

/* ---------- Accessibility ---------- */
.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;
}

.skip-link {
  position: absolute;
  left: 50%;
  transform: translate(-50%, -140%);
  z-index: 999;
  background: var(--ink);
  color: var(--paper);
  padding: 0.75rem 1.3rem;
  font-size: 0.85rem;
  text-decoration: none;
  transition: transform 0.2s var(--ease);
}
.skip-link:focus { transform: translate(-50%, 0); color: var(--champagne); }

/* ---------- Reveal micro-animation (progressive, never hides content) ------
   Only applied when JS has added .js to <html>, so the page is complete and
   readable for crawlers, AdsBot and anyone with JavaScript disabled.        */
.js .reveal { opacity: 0; transform: translateY(14px); }
.js .reveal.is-in {
  opacity: 1;
  transform: none;
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .js .reveal { opacity: 1; transform: none; }
  * { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}