/* ==========================================================================
   Phoenix Info — base.css
   Design tokens, reset, typography, layout primitives.
   Direction: light editorial. Warm paper, heavy type, crimson rules.
   ========================================================================== */

/* --- Tokens ------------------------------------------------------------- */
:root {
  /* Brand — crimson sampled from the Phoenix Info logo */
  --crimson:        #B70B25;
  --crimson-deep:   #8E0519;
  --crimson-bright: #D81232;
  --crimson-wash:   #FBEFF1;

  /* Paper & ink */
  --paper:       #FAF9F7;
  --paper-sunk:  #F4F2EE;
  --paper-raise: #FFFFFF;
  --ink:         #14141A;
  --ink-soft:    #3A3A42;
  --ink-mute:    #6C6C76;
  --ink-faint:   #9A9AA2;
  --rule:        #E4E1DB;
  --rule-soft:   #EDEAE4;

  /* Dark inversion — used by .band--ink sections */
  --night:       #101015;
  --night-raise: #191920;
  --night-rule:  #2C2C36;
  --night-ink:   #F3F2EF;
  --night-mute:  #A0A0AA;

  /* Type */
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
               "Helvetica Neue", Arial, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, "SF Mono",
               Menlo, Consolas, "Liberation Mono", monospace;

  /* Fluid type scale — clamp(min, fluid, max) */
  --t-mono:  0.75rem;
  --t-xs:    clamp(0.8125rem, 0.79rem + 0.1vw, 0.875rem);
  --t-sm:    clamp(0.875rem, 0.85rem + 0.12vw, 0.9375rem);
  --t-base:  clamp(1rem, 0.97rem + 0.15vw, 1.0625rem);
  --t-lg:    clamp(1.125rem, 1.07rem + 0.28vw, 1.3125rem);
  --t-xl:    clamp(1.375rem, 1.26rem + 0.5vw, 1.75rem);
  --t-2xl:   clamp(1.75rem, 1.5rem + 1.1vw, 2.5rem);
  --t-3xl:   clamp(2.125rem, 1.7rem + 1.9vw, 3.5rem);
  --t-4xl:   clamp(2.5rem, 1.85rem + 2.9vw, 4.75rem);
  --t-5xl:   clamp(3rem, 1.9rem + 4.6vw, 6.5rem);

  /* Space */
  --s-1: 0.25rem;  --s-2: 0.5rem;   --s-3: 0.75rem;  --s-4: 1rem;
  --s-5: 1.5rem;   --s-6: 2rem;     --s-7: 2.5rem;   --s-8: 3rem;
  --s-9: 4rem;     --s-10: 5rem;    --s-11: 6.5rem;  --s-12: 8rem;

  /* Layout */
  --shell:   1280px;
  --measure: 68ch;
  --gutter:  clamp(1.25rem, 4vw, 4rem);

  /* Motion */
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --dur: 260ms;

  --nav-h: 76px;
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-h) + 1rem);
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: var(--t-base);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-feature-settings: "kern" 1, "liga" 1, "calt" 1;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5 { margin: 0; font-weight: 800; letter-spacing: -0.022em; line-height: 1.06; }
p  { margin: 0; }
ul, ol { margin: 0; padding: 0; }
li { list-style: none; }
img, svg, video { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; border: 0; background: none; cursor: pointer; }
input, textarea, select { font: inherit; color: inherit; }
hr { border: 0; border-top: 1px solid var(--rule); margin: 0; }

::selection { background: var(--crimson); color: #fff; }

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

/* --- Layout primitives -------------------------------------------------- */
.shell {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.band { padding-block: clamp(3.5rem, 8vw, 7.5rem); position: relative; }
.band--tight { padding-block: clamp(2.5rem, 5vw, 4.5rem); }
.band--sunk  { background: var(--paper-sunk); }
.band--edge  { border-top: 1px solid var(--rule); }

/* Dark inverted band */
.band--ink {
  background: var(--night);
  color: var(--night-ink);
  --ink: var(--night-ink);
  --ink-soft: #D6D5D1;
  --ink-mute: var(--night-mute);
  --ink-faint: #74747E;
  --rule: var(--night-rule);
  --rule-soft: #232330;
  --paper: var(--night);
  --paper-raise: var(--night-raise);
  --paper-sunk: #0B0B0F;
  --crimson: #E8536B;
  --crimson-wash: rgba(232, 83, 107, 0.1);
}

/* Faint vertical grid — the "engineered paper" texture */
.band--grid::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: linear-gradient(90deg, var(--rule-soft) 1px, transparent 1px);
  background-size: calc(100% / 6) 100%;
  opacity: 0.6;
  mask-image: linear-gradient(180deg, transparent, #000 12%, #000 88%, transparent);
}
.band--grid > * { position: relative; }

/* --- Type utilities ----------------------------------------------------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
  font-family: var(--font-mono);
  font-size: var(--t-mono);
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--crimson);
  margin: 0 0 var(--s-4);
}
.eyebrow::before {
  content: "";
  width: 1.9rem;
  height: 2px;
  background: currentColor;
  flex: none;
}
.eyebrow--plain::before { display: none; }
.eyebrow--mute { color: var(--ink-mute); }

.h-hero    { font-size: var(--t-5xl); letter-spacing: -0.035em; }
.h-display { font-size: var(--t-4xl); letter-spacing: -0.032em; }
.h-1       { font-size: var(--t-3xl); letter-spacing: -0.028em; }
.h-2       { font-size: var(--t-2xl); letter-spacing: -0.024em; }
.h-3       { font-size: var(--t-xl);  letter-spacing: -0.018em; }
.h-4       { font-size: var(--t-lg);  letter-spacing: -0.012em; font-weight: 700; }

.lede {
  font-size: var(--t-lg);
  line-height: 1.55;
  color: var(--ink-soft);
  max-width: var(--measure);
  font-weight: 400;
}
.body-mute { color: var(--ink-mute); }
.measure { max-width: var(--measure); }
.measure-narrow { max-width: 52ch; }

.mono {
  font-family: var(--font-mono);
  font-size: var(--t-mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-mute);
}

/* Crimson accent on a word inside a heading */
.accent { color: var(--crimson); }

/* Hand-drawn-feel underline that avoids the "AI gradient" look */
.underline-rule {
  position: relative;
  white-space: nowrap;
}
.underline-rule::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 0.06em;
  height: 0.14em;
  background: var(--crimson);
  opacity: 0.9;
}

/* Section header block */
.sec-head { margin-bottom: clamp(2rem, 4vw, 3.5rem); }
.sec-head__title { font-size: var(--t-2xl); max-width: 24ch; }
.sec-head__note { margin-top: var(--s-4); }
@media (min-width: 900px) {
  .sec-head--split {
    display: grid;
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
    gap: var(--s-8);
    align-items: end;
  }
  .sec-head--split .sec-head__note { margin-top: 0; }
}

/* --- Rules & dividers --------------------------------------------------- */
.rule { height: 1px; background: var(--rule); border: 0; }
.rule--crimson { height: 3px; background: var(--crimson); width: 5rem; border: 0; }

/* --- Buttons ------------------------------------------------------------ */
.btn {
  --btn-bg: var(--crimson);
  --btn-fg: #fff;
  display: inline-flex;
  align-items: center;
  gap: 0.65em;
  padding: 0.95em 1.6em;
  background: var(--btn-bg);
  color: var(--btn-fg);
  font-size: var(--t-sm);
  font-weight: 650;
  letter-spacing: 0.01em;
  border: 1px solid var(--btn-bg);
  border-radius: 2px;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease),
              border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
  will-change: transform;
}
.btn:hover { background: var(--crimson-deep); border-color: var(--crimson-deep); transform: translateY(-2px); }
.btn__arrow { transition: transform var(--dur) var(--ease); }
.btn:hover .btn__arrow { transform: translateX(4px); }

.btn--ghost {
  --btn-bg: transparent;
  --btn-fg: var(--ink);
  border-color: var(--ink);
}
.btn--ghost:hover { background: var(--ink); color: var(--paper); border-color: var(--ink); }

.btn--quiet {
  --btn-bg: transparent;
  --btn-fg: var(--ink-soft);
  border-color: var(--rule);
}
.btn--quiet:hover { background: var(--paper-raise); color: var(--ink); border-color: var(--ink-mute); }

.btn--sm { padding: 0.7em 1.15em; font-size: var(--t-xs); }
.btn--block { width: 100%; justify-content: center; }

/* Inline text link with animated rule */
.link {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  font-size: var(--t-sm);
  font-weight: 650;
  color: var(--crimson);
  padding-bottom: 2px;
  background-image: linear-gradient(var(--crimson), var(--crimson));
  background-size: 100% 1.5px;
  background-position: 0 100%;
  background-repeat: no-repeat;
  transition: background-size var(--dur) var(--ease);
}
.link:hover { background-size: 0% 1.5px; }
.link__arrow { transition: transform var(--dur) var(--ease); }
.link:hover .link__arrow { transform: translateX(4px); }

.link--ink { color: var(--ink); background-image: linear-gradient(var(--ink), var(--ink)); }

/* --- Cards -------------------------------------------------------------- */
.card {
  position: relative;
  background: var(--paper-raise);
  border: 1px solid var(--rule);
  border-radius: 3px;
  padding: clamp(1.35rem, 2.6vw, 2rem);
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease),
              box-shadow var(--dur) var(--ease);
}
.card--link:hover {
  border-color: var(--ink-mute);
  transform: translateY(-3px);
  box-shadow: 0 14px 34px -22px rgba(20, 20, 26, 0.4);
}
.card__num {
  font-family: var(--font-mono);
  font-size: var(--t-mono);
  letter-spacing: 0.12em;
  color: var(--crimson);
  display: block;
  margin-bottom: var(--s-4);
}
.card__title { font-size: var(--t-lg); font-weight: 700; letter-spacing: -0.014em; }
.card__body { margin-top: var(--s-3); color: var(--ink-mute); font-size: var(--t-sm); line-height: 1.62; }

/* Card whose whole area is clickable via a stretched link */
.card--stretch { display: flex; flex-direction: column; }
.stretch-link::after { content: ""; position: absolute; inset: 0; }

/* --- Grids -------------------------------------------------------------- */
.grid { display: grid; gap: var(--s-5); }
.grid--2 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 20rem), 1fr)); }
.grid--3 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 16.5rem), 1fr)); }
.grid--4 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 13rem), 1fr)); }

/* --- Stat row ----------------------------------------------------------- */
.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 9rem), 1fr));
  gap: 0;
  border-top: 1px solid var(--rule);
}
.stat {
  padding: var(--s-5) var(--s-4) var(--s-4) 0;
  border-right: 1px solid var(--rule);
}
.stat:last-child { border-right: 0; }
.stat__num {
  font-size: clamp(1.85rem, 1.3rem + 2.2vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.035em;
  line-height: 1;
  font-variant-numeric: tabular-nums;
}
.stat__label {
  margin-top: var(--s-3);
  font-family: var(--font-mono);
  font-size: var(--t-mono);
  letter-spacing: 0.11em;
  text-transform: uppercase;
  color: var(--ink-mute);
  line-height: 1.45;
}
@media (max-width: 560px) {
  .stat { border-right: 0; border-bottom: 1px solid var(--rule); padding-right: 0; }
  .stat:last-child { border-bottom: 0; }
}

/* --- Reveal on scroll (progressive enhancement) ------------------------- */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 620ms var(--ease-out), transform 620ms var(--ease-out);
}
.reveal.is-in { opacity: 1; transform: none; }
/* If JS never runs, content must still be visible */
html.no-js .reveal { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  .reveal { opacity: 1; transform: none; }
}

/* --- Accessibility helpers --------------------------------------------- */
.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  margin: -1px; padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  top: 0; left: 50%;
  transform: translate(-50%, -110%);
  z-index: 200;
  background: var(--crimson);
  color: #fff;
  padding: 0.7em 1.2em;
  font-size: var(--t-sm);
  font-weight: 650;
  transition: transform 160ms var(--ease);
}
.skip-link:focus { transform: translate(-50%, 0); }

/* --- Print -------------------------------------------------------------- */
@media print {
  .site-head, .site-foot, .cta-band { display: none !important; }
  body { background: #fff; }
  .reveal { opacity: 1 !important; transform: none !important; }
}