/* ==========================================================================
   Priority Index — base.css
   Design tokens, reset, typography and shared components (header, footer,
   buttons, cards). Every page includes this file first, then page-specific
   CSS. Colors: deep navy + parchment + gold — editorial, donor-grade look.
   ========================================================================== */

:root {
  /* Color tokens */
  --ink: #14202e;
  --ink-2: #33465c;
  --ink-3: #64748b;
  --navy: #0d2438;
  --navy-2: #0a1c2c;
  --paper: #fbf8f3;
  --paper-2: #f4efe6;
  --white: #ffffff;
  --gold: #b48632;
  --gold-2: #d9a441;
  --teal: #14625a;
  --clay: #a8452f;
  --line: #e4ddd0;
  --line-dark: rgba(255, 255, 255, 0.12);
  --good: #1c7c54;
  --warn: #9a6b0f;

  /* Typography */
  --serif: "Fraunces", "Iowan Old Style", Georgia, "Times New Roman", serif;
  --sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;

  /* Layout */
  --max: 1160px;
  --radius: 10px;
  --shadow: 0 1px 2px rgba(20, 32, 46, 0.06), 0 8px 24px rgba(20, 32, 46, 0.07);
  --shadow-lg: 0 2px 6px rgba(20, 32, 46, 0.08), 0 18px 48px rgba(20, 32, 46, 0.14);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--sans);
  font-size: 16.5px;
  line-height: 1.65;
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

a {
  color: var(--teal);
  text-underline-offset: 3px;
}

a:hover {
  color: var(--gold);
}

h1,
h2,
h3,
h4 {
  font-family: var(--serif);
  font-weight: 600;
  line-height: 1.18;
  letter-spacing: -0.01em;
  margin: 0 0 0.5em;
  color: var(--ink);
}

h1 {
  font-size: clamp(2.1rem, 4.6vw, 3.4rem);
}

h2 {
  font-size: clamp(1.6rem, 3vw, 2.3rem);
}

h3 {
  font-size: 1.3rem;
}

p {
  margin: 0 0 1em;
}

/* ---------- Layout helpers ---------- */
.container {
  width: min(var(--max), 92%);
  margin-inline: auto;
}

.section {
  padding: clamp(3rem, 7vw, 5.5rem) 0;
}

.section--tight {
  padding: clamp(2rem, 4vw, 3rem) 0;
}

.section--paper2 {
  background: var(--paper-2);
  border-block: 1px solid var(--line);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
  font-size: 0.74rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 1rem;
}

.eyebrow::before {
  content: "";
  width: 26px;
  height: 2px;
  background: var(--gold);
}

.lede {
  font-size: 1.16rem;
  color: var(--ink-2);
  max-width: 62ch;
}

.grid {
  display: grid;
  gap: 1.5rem;
}

.grid--3 {
  grid-template-columns: repeat(3, 1fr);
}

.grid--2 {
  grid-template-columns: repeat(2, 1fr);
}

@media (max-width: 880px) {

  .grid--3,
  .grid--2 {
    grid-template-columns: 1fr;
  }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-block;
  padding: 0.72em 1.5em;
  font-family: var(--sans);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  border-radius: 6px;
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn--gold {
  background: var(--gold-2);
  color: var(--navy-2);
}

.btn--gold:hover {
  background: #e6b356;
  color: var(--navy-2);
}

.btn--ghost {
  border-color: rgba(255, 255, 255, 0.35);
  color: #fff;
}

.btn--ghost:hover {
  border-color: var(--gold-2);
  color: var(--gold-2);
}

.btn--outline {
  border-color: var(--ink);
  color: var(--ink);
}

.btn--outline:hover {
  background: var(--ink);
  color: var(--paper);
}

/* ---------- Cards ---------- */
.card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.6rem;
  box-shadow: var(--shadow);
}

.card h3 {
  margin-bottom: 0.4rem;
}

.card p:last-child {
  margin-bottom: 0;
}

.card__num {
  font-family: var(--serif);
  font-size: 1.05rem;
  color: var(--gold);
  display: block;
  margin-bottom: 0.7rem;
}

/* ---------- Header / navigation ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(251, 248, 243, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  text-decoration: none;
  color: var(--ink);
}

.brand:hover {
  color: var(--ink);
}

.brand__mark {
  width: 34px;
  height: 34px;
  flex: none;
}

.brand__name {
  font-family: var(--serif);
  font-size: 1.12rem;
  font-weight: 600;
  line-height: 1.1;
  display: block;
}

.brand__tag {
  font-size: 0.68rem;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--ink-3);
  display: block;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 1.6rem;
}

.site-nav a {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--ink-2);
  text-decoration: none;
  padding: 0.3rem 0;
  border-bottom: 2px solid transparent;
}

.site-nav a:hover {
  color: var(--ink);
}

.site-nav a.is-active {
  color: var(--ink);
  border-bottom-color: var(--gold);
}

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 0.45rem 0.6rem;
  font-size: 1.1rem;
  line-height: 1;
  cursor: pointer;
  color: var(--ink);
}

@media (max-width: 780px) {
  .nav-toggle {
    display: block;
  }

  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    background: var(--paper);
    border-bottom: 1px solid var(--line);
    padding: 0.4rem 4%;
    display: none;
  }

  .site-nav.is-open {
    display: flex;
  }

  .site-nav a {
    width: 100%;
    padding: 0.8rem 0;
    border-bottom: 1px solid var(--line);
  }

  .site-nav a:last-child {
    border-bottom: none;
  }
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--navy-2);
  color: #c8d2dc;
  padding: 3.2rem 0 2rem;
  margin-top: 4rem;
  font-size: 0.92rem;
}

.site-footer h4 {
  color: #fff;
  font-family: var(--sans);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: 0.9rem;
}

.site-footer a {
  color: #c8d2dc;
  text-decoration: none;
  display: block;
  padding: 0.18rem 0;
}

.site-footer a:hover {
  color: var(--gold-2);
}

.site-footer__grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr;
  gap: 2.5rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--line-dark);
}

.site-footer__note {
  margin-top: 1.4rem;
  font-size: 0.8rem;
  color: #8fa0b0;
}

@media (max-width: 780px) {
  .site-footer__grid {
    grid-template-columns: 1fr;
    gap: 1.6rem;
  }
}

/* ---------- Scroll reveal (subtle, editorial) ---------- */
.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* ---------- Shared: data source banner ---------- */
.data-banner {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.85rem;
  font-weight: 500;
  padding: 0.55rem 0.9rem;
  border-radius: 8px;
  border: 1px solid;
}

.data-banner--live {
  background: #e9f5ee;
  border-color: #bfe0cd;
  color: var(--good);
}

.data-banner--sample {
  background: #fdf3dd;
  border-color: #ecd9a8;
  color: var(--warn);
}

.data-banner__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: currentColor;
  flex: none;
}

/* ---------- Skip link (accessibility) ---------- */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--navy);
  color: #fff;
  padding: 0.6rem 1rem;
  z-index: 100;
}

.skip-link:focus {
  left: 0;
}