/* =========================================================================
   White & Blue Bricks - site styles
   Tokens follow BRAND.md. Every colour pairing here was contrast-measured;
   see the table in BRAND.md before changing any of them.
   ========================================================================= */

:root {
  --cobalt:    #1A3E92;
  --kiln:      #0D1B33;
  --glaze:     #7291DA;
  --porcelain: #F3F5F8;
  --chalk:     #FFFFFF;
  --slate:     #5A6372;
  --mortar:    #C6CAD2;
  --manganese: #6B4A63;

  --ground:    var(--porcelain);
  --surface:   var(--chalk);
  --sunk:      #E8ECF2;
  --ink:       var(--kiln);
  --ink-2:     var(--slate);
  --accent:    var(--cobalt);
  --accent-2:  var(--manganese);
  --rule:      var(--mortar);
  --rule-soft: #DFE4EB;

  --display: "Bricolage Grotesque", "Segoe UI", system-ui, sans-serif;
  --body:    "Newsreader", Georgia, "Times New Roman", serif;
  --mono:    "DM Mono", ui-monospace, Consolas, monospace;

  --measure: 66ch;
  --gut: clamp(20px, 5vw, 72px);
  --maxw: 1180px;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--ground);
  color: var(--ink);
  font-family: var(--body);
  font-size: 18px;
  line-height: 1.62;
  -webkit-font-smoothing: antialiased;
}

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

a { color: var(--accent); text-underline-offset: 3px; text-decoration-thickness: 1px; }
a:hover { text-decoration-thickness: 2px; }

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

h1, h2, h3, h4 { font-family: var(--display); text-wrap: balance; margin: 0; }
p { margin: 0; }

.wrap { max-width: var(--maxw); margin: 0 auto; padding-inline: var(--gut); }
.narrow { max-width: var(--measure); }

.skip {
  position: absolute; left: -9999px; top: 0; z-index: 99;
  background: var(--accent); color: var(--porcelain);
  padding: 12px 18px; font-family: var(--mono); font-size: 13px;
}
.skip:focus { left: 8px; top: 8px; }

/* ---------------------------------------------------------------- type --- */
.eyebrow {
  display: block;
  font-family: var(--mono); font-size: 11px; font-weight: 500;
  letter-spacing: .2em; text-transform: uppercase; color: var(--ink-2);
}
h1 {
  font-size: clamp(40px, 7.4vw, 76px);
  font-variation-settings: "opsz" 96, "wght" 620, "wdth" 96;
  letter-spacing: -.03em; line-height: .99;
}
h2 {
  font-size: clamp(28px, 4.4vw, 44px);
  font-variation-settings: "opsz" 96, "wght" 600, "wdth" 100;
  letter-spacing: -.02em; line-height: 1.08;
}
h3 {
  font-size: clamp(20px, 2.4vw, 25px);
  font-variation-settings: "opsz" 48, "wght" 640, "wdth" 100;
  letter-spacing: -.012em; line-height: 1.2;
}
h4 {
  font-size: 17px;
  font-variation-settings: "opsz" 24, "wght" 650, "wdth" 100;
  letter-spacing: -.006em;
}
.lede {
  font-size: clamp(19px, 2.4vw, 23px); line-height: 1.5;
  color: var(--ink-2); max-width: var(--measure);
}
.prose { display: flex; flex-direction: column; gap: 17px; max-width: var(--measure); }
.prose strong { font-weight: 640; }
.small { font-size: 15.5px; line-height: 1.55; color: var(--ink-2); }
.q { color: var(--accent); }

/* ------------------------------------------------------------- buttons --- */
.btns { display: flex; flex-wrap: wrap; gap: 12px; }
.btn {
  display: inline-block; font-family: var(--mono); font-size: 12px;
  font-weight: 500; letter-spacing: .14em; text-transform: uppercase;
  padding: 14px 22px; text-decoration: none; border: 1.5px solid var(--accent);
  transition: background .15s ease, color .15s ease;
}
.btn-solid { background: var(--accent); color: var(--porcelain); }
.btn-solid:hover { background: var(--kiln); border-color: var(--kiln); }
.btn-ghost { background: transparent; color: var(--accent); }
.btn-ghost:hover { background: var(--accent); color: var(--porcelain); }
@media (prefers-reduced-motion: reduce) { .btn { transition: none; } }

/* ----------------------------------------------------------------- nav --- */
.nav {
  position: sticky; top: 0; z-index: 40;
  background: color-mix(in srgb, var(--ground) 92%, transparent);
  backdrop-filter: saturate(160%) blur(10px);
  border-bottom: 1px solid var(--rule-soft);
}
.nav-in {
  max-width: var(--maxw); margin: 0 auto; padding: 13px var(--gut);
  display: flex; align-items: center; justify-content: space-between; gap: 18px;
}
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; }
.brand svg { width: 34px; height: 34px; color: var(--accent); flex: none; }
.brand .bn {
  font-family: var(--display);
  font-variation-settings: "opsz" 96, "wght" 550, "wdth" 100;
  font-size: 18px; letter-spacing: -.012em; color: var(--accent); line-height: 1;
}
.brand .bs {
  display: block; font-family: var(--mono); font-size: 8.5px;
  letter-spacing: .2em; color: var(--ink-2); margin-top: 4px;
}
.nav-links { display: flex; align-items: center; gap: 26px; }
.nav-links a {
  font-family: var(--mono); font-size: 12px; letter-spacing: .1em;
  text-transform: uppercase; text-decoration: none; color: var(--ink);
  padding: 4px 0; border-bottom: 1.5px solid transparent;
}
.nav-links a:hover { border-bottom-color: var(--accent); }
.nav-links a[aria-current="page"] { color: var(--accent); border-bottom-color: var(--accent); }
.nav-toggle { display: none; background: none; border: 1.5px solid var(--rule);
  color: var(--ink); font-family: var(--mono); font-size: 11px; letter-spacing: .12em;
  text-transform: uppercase; padding: 9px 13px; cursor: pointer; }

@media (max-width: 880px) {
  .nav-toggle { display: block; }
  .nav-links {
    display: none; position: absolute; left: 0; right: 0; top: 100%;
    flex-direction: column; align-items: flex-start; gap: 0;
    background: var(--surface); border-bottom: 1px solid var(--rule);
    padding: 6px var(--gut) 18px;
  }
  .nav-links.open { display: flex; }
  .nav-links a { width: 100%; padding: 13px 0; border-bottom: 1px solid var(--rule-soft); }
  .nav-links a:last-child { border-bottom: none; }
}

/* -------------------------------------------------------------- layout --- */
section { padding-block: clamp(54px, 8vw, 96px); }
.tight { padding-block: clamp(36px, 5vw, 60px); }
.divider { border-top: 1px solid var(--rule-soft); }

.sec-head { display: flex; flex-direction: column; gap: 14px; max-width: var(--measure); margin-bottom: 38px; }

.two { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: clamp(28px, 4.5vw, 64px); align-items: center; }
.two.top { align-items: start; }
.three { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: clamp(20px, 3vw, 34px); }
.four { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px; }

/* ---------------------------------------------------------------- hero --- */
.hero { padding-block: clamp(44px, 6vw, 84px) clamp(40px, 5vw, 70px); position: relative; overflow: hidden; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.04fr) minmax(0, .96fr); gap: clamp(30px, 5vw, 62px); align-items: center; }
.hero h1 { margin-bottom: 22px; }
.hero .lede { margin-bottom: 28px; }
.hero-media { position: relative; }
.hero-media img { width: 100%; }
.hero-tag {
  position: absolute; left: 0; bottom: 0;
  background: var(--accent); color: var(--porcelain);
  font-family: var(--mono); font-size: 10.5px; letter-spacing: .16em;
  text-transform: uppercase; padding: 9px 14px;
}

.page-hero { padding-block: clamp(40px, 5.5vw, 70px) clamp(28px, 4vw, 46px); }
.page-hero h1 { font-size: clamp(34px, 5.6vw, 58px); margin-block: 14px 18px; }

/* --------------------------------------------------------------- bands --- */
.band-dark { background: var(--kiln); color: var(--porcelain); }
.band-dark h2, .band-dark h3 { color: var(--porcelain); }
.band-dark .eyebrow, .band-dark .lede, .band-dark .small { color: var(--glaze); }
.band-dark a { color: var(--glaze); }
.band-dark .btn-ghost { color: var(--glaze); border-color: var(--glaze); }
.band-dark .btn-ghost:hover { background: var(--glaze); color: var(--kiln); }
.band-dark .btn-solid { background: var(--glaze); color: var(--kiln); border-color: var(--glaze); }
.band-dark .btn-solid:hover { background: var(--porcelain); border-color: var(--porcelain); }

.band-sunk { background: var(--sunk); }

/* ---------------------------------------------------------------- card --- */
.card { background: var(--surface); border: 1px solid var(--rule-soft); padding: clamp(20px, 2.6vw, 30px); display: flex; flex-direction: column; gap: 12px; }
.card h3 { margin-bottom: 2px; }
.card .small { margin: 0; }

.figure figcaption {
  font-family: var(--mono); font-size: 11px; letter-spacing: .05em;
  color: var(--ink-2); margin-top: 10px; line-height: 1.5;
}

/* -------------------------------------------------------------- course --- */
.courses { display: flex; flex-direction: column; gap: 1px; background: var(--rule-soft); border: 1px solid var(--rule-soft); }
.course { background: var(--surface); padding: clamp(22px, 3vw, 34px); display: grid; grid-template-columns: 92px minmax(0, 1fr); gap: clamp(18px, 3vw, 34px); align-items: start; }
.course .n { font-family: var(--mono); font-size: 11px; letter-spacing: .14em; color: var(--accent); padding-top: 7px; }
.course.bond { background: var(--sunk); }
.course.bond .n { color: var(--accent-2); }
.course .body { display: flex; flex-direction: column; gap: 12px; }
.tag {
  display: inline-block; font-family: var(--mono); font-size: 9.5px;
  letter-spacing: .13em; text-transform: uppercase; color: var(--accent-2);
  border: 1px solid color-mix(in srgb, var(--accent-2) 45%, transparent);
  padding: 3px 7px; margin-left: 10px; vertical-align: 3px;
}

/* ---------------------------------------------------------------- list --- */
.ticks { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 10px; }
.ticks li { position: relative; padding-left: 26px; font-size: 16.5px; line-height: 1.5; }
.ticks li::before {
  content: ""; position: absolute; left: 0; top: .52em;
  width: 11px; height: 11px; border: 2px solid var(--accent);
  border-right: none; border-bottom: none; border-top-left-radius: 11px;
}
.band-dark .ticks li::before { border-color: var(--glaze); }

/* -------------------------------------------------------------- steps ---- */
.steps { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1px; background: var(--rule-soft); border: 1px solid var(--rule-soft); }
.step { background: var(--surface); padding: 22px; display: flex; flex-direction: column; gap: 9px; }
.step .wk { font-family: var(--mono); font-size: 10.5px; letter-spacing: .14em; text-transform: uppercase; color: var(--accent); }

/* -------------------------------------------------------------- quote ---- */
.pull {
  font-family: var(--display);
  font-variation-settings: "opsz" 96, "wght" 500, "wdth" 100;
  font-size: clamp(23px, 3.4vw, 34px); line-height: 1.2; letter-spacing: -.018em;
  color: var(--accent); border-left: 3px solid var(--accent);
  padding-left: clamp(18px, 3vw, 30px); max-width: 24ch; text-wrap: balance;
}
.band-dark .pull { color: var(--glaze); border-left-color: var(--glaze); }

/* ------------------------------------------------------------ disclose --- */
.disclose {
  border: 1px solid var(--rule); background: var(--surface);
  padding: 20px 22px; display: flex; gap: 16px; align-items: flex-start;
}
.disclose .badge {
  flex: none; font-family: var(--mono); font-size: 9.5px; letter-spacing: .14em;
  text-transform: uppercase; color: var(--surface); background: var(--accent-2);
  padding: 4px 8px; margin-top: 2px;
}
.disclose p { font-size: 15px; line-height: 1.55; color: var(--ink-2); }

/* ------------------------------------------------------------- contact --- */
.contact-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.contact-card { background: var(--surface); border: 1px solid var(--rule-soft); padding: clamp(20px, 2.6vw, 28px); display: flex; flex-direction: column; gap: 7px; }
.contact-card .k { font-family: var(--mono); font-size: 10px; letter-spacing: .18em; text-transform: uppercase; color: var(--ink-2); }
.contact-card .v { font-size: clamp(18px, 2.2vw, 22px); font-family: var(--display); font-variation-settings: "opsz" 48, "wght" 600; letter-spacing: -.01em; }
.contact-card .v a { text-decoration: none; }
.contact-card .v a:hover { text-decoration: underline; }

/* -------------------------------------------------------------- footer --- */
footer { border-top: 1px solid var(--rule); padding-block: clamp(40px, 5.5vw, 64px); }
.foot-grid { display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr) minmax(0, 1fr); gap: 34px; }
.foot-links { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 9px; }
.foot-links a { font-size: 16px; text-decoration: none; color: var(--ink); }
.foot-links a:hover { color: var(--accent); text-decoration: underline; }
.foot-h { font-family: var(--mono); font-size: 10px; letter-spacing: .18em; text-transform: uppercase; color: var(--ink-2); margin-bottom: 4px; }
.colophon { margin-top: 38px; padding-top: 22px; border-top: 1px solid var(--rule-soft); display: flex; flex-wrap: wrap; gap: 8px 28px; justify-content: space-between; }
.colophon p { font-size: 13.5px; color: var(--ink-2); }

/* --------------------------------------------------------------- misc ---- */
.pattern-strip {
  height: 76px; background-image: url("../brand/pattern.svg");
  background-size: 152px 152px; background-repeat: repeat-x; opacity: .85;
}
.mark-inline { width: 46px; height: 46px; color: var(--accent); }

/* ---------------------------------------------------------- responsive --- */
@media (max-width: 980px) {
  .hero-grid { grid-template-columns: minmax(0, 1fr); }
  .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .foot-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 760px) {
  body { font-size: 17px; }
  .two, .three { grid-template-columns: minmax(0, 1fr); }
  .four { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .contact-grid { grid-template-columns: minmax(0, 1fr); }
  .course { grid-template-columns: minmax(0, 1fr); gap: 10px; }
  .course .n { padding-top: 0; }
}
@media (max-width: 480px) {
  .steps { grid-template-columns: minmax(0, 1fr); }
  .foot-grid { grid-template-columns: minmax(0, 1fr); }
  .disclose { flex-direction: column; gap: 11px; }
}

/* ----------------------------------------------------------- dark mode --- */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --ground:    var(--kiln);
    --surface:   #152442;
    --sunk:      #101D36;
    --ink:       var(--porcelain);
    --ink-2:     #9AA6BC;
    --accent:    var(--glaze);
    --accent-2:  #B58FAB;
    --rule:      #2A3A5C;
    --rule-soft: #1E2C4B;
  }
  :root:not([data-theme="light"]) .band-dark { background: #050C18; }
  :root:not([data-theme="light"]) .btn-solid { color: var(--kiln); }
  :root:not([data-theme="light"]) .hero-tag { color: var(--kiln); }
  :root:not([data-theme="light"]) .disclose .badge { color: var(--kiln); }
  :root:not([data-theme="light"]) .pattern-strip { background-image: url("../brand/pattern-dark.svg"); opacity: .5; }
  :root:not([data-theme="light"]) .skip { color: var(--kiln); }
}