/* ============================================================
   Reading Without Walls — Design System
   Accessibility-first, multisensory teaching unit.
   Fonts: Atkinson Hyperlegible (display/body) + Lexend (ui/headings)
   ============================================================ */

:root {
  /* Palette */
  --ink: #1B2230;            /* deep slate — primary text */
  --ink-soft: #33405A;       /* secondary text */
  --paper: #FBF9F4;          /* warm off-white — page */
  --card: #FFFFFF;
  --line: #E6E1D6;           /* hairline borders */
  --teal: #0E7C7B;           /* primary — calm, grounding */
  --teal-deep: #0A5F5E;
  --amber: #F4A425;          /* accent — warmth, highlight */
  --amber-soft: #FCE7C4;
  --v: #4A6FA5;              /* V channel — blue */
  --v-soft: #E4ECF8;
  --a: #0E7C7B;              /* A channel — teal */
  --a-soft: #DFF0F0;
  --k: #C2592B;              /* K channel — burnt orange */
  --k-soft: #F9E7DC;
  --success: #2E7D46;

  /* Type */
  --display: 'Atkinson Hyperlegible', Georgia, serif;
  --ui: 'Lexend', system-ui, sans-serif;

  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 18px 50px -20px rgba(27, 34, 48, 0.35);
  --wrap: 1160px;
  --focus: 3px solid var(--amber);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 84px; }
body {
  margin: 0;
  font-family: var(--display);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  font-size: 1.075rem;
}

h1, h2, h3, h4, h5 { font-family: var(--ui); line-height: 1.18; margin: 0 0 .5em; }
p { margin: 0 0 1em; }
a { color: var(--teal-deep); }
img, svg { display: block; }
:focus-visible { outline: var(--focus); outline-offset: 3px; border-radius: 4px; }

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }

/* Eyebrow + section titles */
.eyebrow {
  font-family: var(--ui);
  text-transform: uppercase;
  letter-spacing: .14em;
  font-size: .76rem;
  font-weight: 600;
  color: var(--teal);
  margin: 0 0 14px;
}
.sec-title { font-size: clamp(1.7rem, 3.4vw, 2.6rem); letter-spacing: -.015em; margin-bottom: 18px; }
.sec-sub { font-size: 1.12rem; color: var(--ink-soft); max-width: 720px; margin-bottom: 44px; }
.section { padding: 88px 0; }
.section:nth-of-type(even) { background: #F4F1E9; }

/* ===================== HEADER ===================== */
.site-head {
  position: sticky; top: 0; z-index: 50;
  background: rgba(251, 249, 244, .92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.head-inner { display: flex; align-items: center; gap: 22px; padding-top: 14px; padding-bottom: 14px; }
.brand { display: inline-flex; align-items: center; gap: 11px; text-decoration: none; color: var(--ink); }
.brand-mark {
  width: 40px; height: 40px; border-radius: 11px;
  background: var(--ink); display: grid; place-items: center; flex: none;
}
.brand-word { font-family: var(--ui); font-weight: 700; font-size: 1.14rem; }
.brand-word em { font-style: normal; color: var(--teal); }
.head-nav { display: flex; gap: 4px; margin-left: auto; flex-wrap: wrap; }
.head-nav a {
  font-family: var(--ui); font-size: .92rem; font-weight: 500;
  color: var(--ink-soft); text-decoration: none; padding: 9px 13px; border-radius: 9px;
}
.head-nav a:hover { color: var(--ink); background: #EFEBDD; }
.head-cta {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--ui); font-weight: 600; font-size: .9rem;
  color: var(--paper); background: var(--ink);
  border: none; border-radius: 10px; padding: 11px 16px; cursor: pointer;
}
.head-cta:hover { background: var(--teal-deep); }

/* ===================== HERO ===================== */
.hero { background: var(--paper); padding: 76px 0 64px; position: relative; overflow: hidden; }
.hero::before {
  content: ""; position: absolute; top: -120px; right: -120px; width: 460px; height: 460px;
  border-radius: 50%; background: radial-gradient(circle, rgba(244,164,37,.16), transparent 65%);
  pointer-events: none;
}
.hero-grid { display: grid; grid-template-columns: 1.4fr .9fr; gap: 52px; align-items: center; position: relative; }
.hero h1 { font-size: clamp(2.1rem, 5vw, 3.5rem); letter-spacing: -.02em; margin-bottom: 22px; }
.h-accent { color: var(--teal); }
.lede { font-size: 1.2rem; color: var(--ink-soft); max-width: 620px; }
.hero-chips { display: flex; flex-wrap: wrap; gap: 10px; margin: 26px 0 30px; }
.chip {
  display: inline-flex; align-items: center; gap: 8px;
  background: #F1EDE1; border: 1px solid var(--line);
  color: var(--ink-soft); font-family: var(--ui); font-size: .86rem; font-weight: 500;
  padding: 9px 14px; border-radius: 999px;
}
.chip svg { color: var(--teal); }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--ui); font-weight: 600; font-size: 1rem;
  text-decoration: none; padding: 14px 22px; border-radius: 12px; cursor: pointer;
  border: 2px solid transparent; transition: transform .06s ease;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--teal); color: #fff; }
.btn-primary:hover { background: var(--teal-deep); }
.btn-ghost { background: transparent; color: var(--teal-deep); border-color: var(--teal); }
.btn-ghost:hover { background: var(--a-soft); }
.btn-light { background: var(--paper); color: var(--ink); }
.btn-light:hover { background: #fff; }
.btn-sm { padding: 10px 16px; font-size: .9rem; }

/* Hero rail */
.hero-rail { position: relative; }
.rail-card {
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); box-shadow: var(--shadow);
  padding: 28px;
}
.rail-label { font-family: var(--ui); font-weight: 700; font-size: .82rem; text-transform: uppercase; letter-spacing: .1em; color: var(--teal); margin: 0 0 12px; }
.rail-label-top { margin-top: 26px; }
.rail-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 13px; }
.rail-list li { display: flex; align-items: center; gap: 11px; font-size: 1.02rem; font-weight: 600; }
.rail-list svg { color: var(--teal); flex: none; }
.learner-pills { display: flex; flex-wrap: wrap; gap: 8px; }
.pill {
  font-family: var(--ui); font-size: .82rem; font-weight: 600;
  background: var(--amber-soft); color: #8A5A00; padding: 7px 12px; border-radius: 8px;
}
.rail-note { font-size: .95rem; color: var(--ink-soft); margin: 22px 0 0; }

/* ===================== QUICK FACTS ===================== */
.quickfacts { background: var(--ink); padding: 34px 0; }
.facts-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; text-align: center; }
.fact { display: flex; flex-direction: column; }
.fact-num { font-family: var(--ui); font-weight: 700; font-size: 2.4rem; color: var(--amber); line-height: 1; }
.fact-num small { font-size: .5em; font-weight: 600; color: var(--amber); opacity: .85; }
.fact-lab { color: #C9CFDD; font-family: var(--ui); font-size: .86rem; margin-top: 8px; }

/* ===================== OVERVIEW / PRINCIPLES ===================== */
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; margin: 30px 0 56px; }
.two-col p:first-child { margin-top: 0; }
.principles { border-top: 1px solid var(--line); padding-top: 52px; }
.principles h3 { font-size: 1.4rem; margin-bottom: 30px; }
.principles-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.principle {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px; transition: transform .15s ease, box-shadow .15s ease;
}
.principle:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
.principle-ico { width: 46px; height: 46px; border-radius: 12px; background: var(--a-soft); color: var(--teal); display: grid; place-items: center; margin-bottom: 16px; }
.principle h4 { font-size: 1.08rem; margin-bottom: 8px; }
.principle p { font-size: .98rem; color: var(--ink-soft); margin: 0; }

/* ===================== METHOD / VAK ===================== */
.method { background: #F4F1E9; }
.vak-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; margin-bottom: 36px; }
.vak-card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; border-top: 6px solid transparent; }
.vak-v { border-top-color: var(--v); }
.vak-a { border-top-color: var(--a); }
.vak-k { border-top-color: var(--k); }
.vak-dot { width: 12px; height: 12px; border-radius: 50%; display: inline-block; margin-bottom: 14px; }
.vak-v .vak-dot { background: var(--v); } .vak-a .vak-dot { background: var(--a); } .vak-k .vak-dot { background: var(--k); }
.vak-card h3 { font-size: 1.22rem; margin-bottom: 8px; }
.vak-card p { color: var(--ink-soft); font-size: .99rem; }
.vak-tag { font-family: var(--ui); font-weight: 700; font-size: .86rem; }
.vak-v .vak-tag { color: var(--v); } .vak-a .vak-tag { color: var(--a); } .vak-k .vak-tag { color: var(--k); }
.method-note {
  display: flex; gap: 16px; align-items: flex-start;
  background: var(--amber-soft); border-left: 5px solid var(--amber);
  border-radius: var(--radius-sm); padding: 22px 24px; font-size: 1.03rem;
}
.method-note svg { color: #8A5A00; flex: none; margin-top: 4px; }
.method-note p { margin: 0; }

/* ===================== SESSIONS ===================== */
.sessions { background: var(--paper); }
.session-toc {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px;
  margin: 10px 0 46px;
}
.session-toc a {
  display: flex; align-items: center; gap: 12px;
  font-family: var(--ui); font-weight: 600; font-size: .98rem; color: var(--ink);
  text-decoration: none; background: var(--card); border: 1px solid var(--line);
  border-radius: 12px; padding: 14px 16px; transition: border-color .15s ease;
}
.session-toc a:hover { border-color: var(--teal); }
.toc-num { font-weight: 700; color: var(--teal); font-size: .9rem; }

.session {
  background: var(--card); border: 1px solid var(--line); border-radius: 20px;
  margin-bottom: 34px; overflow: hidden; scroll-margin-top: 96px;
}
.session-head {
  display: grid; grid-template-columns: auto 1fr auto; gap: 22px; align-items: center;
  padding: 26px 30px; border-bottom: 1px solid var(--line); background: #F7F5EE;
}
.session-num {
  font-family: var(--ui); font-weight: 700; font-size: 1.7rem; color: var(--amber);
  background: var(--ink); color: var(--amber);
  width: 64px; height: 64px; border-radius: 16px; display: grid; place-items: center; flex: none;
}
.session-title h3 { font-size: 1.6rem; margin-bottom: 6px; }
.session-goal { margin: 0; color: var(--ink-soft); font-size: 1.02rem; }
.session-meta { display: flex; gap: 8px; flex-direction: column; align-items: flex-end; }
.session-meta span {
  display: inline-flex; align-items: center; gap: 7px;
  font-family: var(--ui); font-size: .82rem; font-weight: 600; color: var(--ink-soft);
  background: var(--card); border: 1px solid var(--line); padding: 7px 12px; border-radius: 999px;
}
.session-meta svg { color: var(--teal); }

.session-body { padding: 10px 30px 30px; }
.s-block { padding: 22px 0; border-bottom: 1px dashed var(--line); }
.s-block:last-child { border-bottom: none; }
.s-block h4 { font-size: 1.02rem; text-transform: uppercase; letter-spacing: .08em; color: var(--teal); margin-bottom: 10px; }
.s-block p { margin: 0 0 8px; }
.activity { padding: 18px; margin-top: 14px; background: #FAF9F5; border: 1px solid var(--line); border-radius: var(--radius-sm); }
.activity h5 { font-size: 1.12rem; margin-bottom: 8px; display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.activity p { margin: 0 0 8px; font-size: 1rem; }
.activity p:last-child { margin-bottom: 0; }
.adapt { background: var(--a-soft); border-radius: 8px; padding: 10px 12px; font-size: .95rem; }
.adapt strong { color: var(--teal-deep); }

.vak-badges { display: inline-flex; gap: 5px; margin-right: 6px; }
.vak-badges span { font-family: var(--ui); font-weight: 700; font-size: .78rem; width: 24px; height: 24px; border-radius: 7px; display: grid; place-items: center; }
.vb { background: var(--v-soft); color: var(--v); }
.ab { background: var(--a-soft); color: var(--a); }
.kb { background: var(--k-soft); color: var(--k); }

.s-check {
  display: flex; gap: 14px; align-items: flex-start;
  background: #E9F4EC; border: 1px solid #C9E3D1; border-radius: var(--radius-sm);
  padding: 18px 22px; margin-top: 8px;
}
.s-check svg { color: var(--success); flex: none; margin-top: 3px; }
.s-check p { margin: 0; }

/* ===================== ASSESSMENT ===================== */
.assess-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin: 34px 0 40px; }
.assess-card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; }
.assess-num {
  font-family: var(--ui); font-weight: 700; color: var(--teal); font-size: .9rem;
  background: var(--a-soft); width: 34px; height: 34px; border-radius: 9px;
  display: grid; place-items: center; margin-bottom: 14px;
}
.assess-card h3 { font-size: 1.1rem; margin-bottom: 8px; }
.assess-card p { font-size: .96rem; color: var(--ink-soft); margin: 0; }
.assess-principles { background: var(--ink); border-radius: var(--radius); padding: 32px; color: #EDF0F6; }
.assess-principles h3 { font-family: var(--ui); font-size: 1.2rem; margin-bottom: 20px; color: var(--amber); }
.assess-principles ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 14px; }
.assess-principles li { display: flex; gap: 12px; align-items: flex-start; }
.tick { width: 22px; height: 22px; border-radius: 50%; background: var(--teal); color: #fff; display: grid; place-items: center; flex: none; margin-top: 3px; }
.assess-principles strong { color: #fff; }

/* ===================== TECH ===================== */
.tech { background: #F4F1E9; }
.tech-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; margin-bottom: 30px; }
.tech-card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; }
.tech-ico { width: 44px; height: 44px; border-radius: 12px; background: var(--amber-soft); color: #8A5A00; display: grid; place-items: center; margin-bottom: 16px; }
.tech-card h3 { font-size: 1.14rem; margin-bottom: 8px; }
.tech-card p { font-size: .97rem; color: var(--ink-soft); }
.tech-for { font-family: var(--ui); font-size: .88rem; color: var(--ink-soft); display: block; }
.tech-for strong { color: var(--teal-deep); }
.tech-note {
  display: flex; gap: 16px; align-items: flex-start;
  background: var(--amber-soft); border-left: 5px solid var(--amber); border-radius: var(--radius-sm);
  padding: 22px 24px; font-size: 1.03rem;
}
.tech-note svg { color: #8A5A00; flex: none; margin-top: 4px; }
.tech-note p { margin: 0; }

/* ===================== WHOLE TEEN / FAQ ===================== */
.wholetwo { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; }
.whole-list { list-style: none; margin: 24px 0 0; padding: 0; display: grid; gap: 16px; }
.whole-list li { padding-left: 22px; position: relative; }
.whole-list li::before {
  content: ""; position: absolute; left: 0; top: .6em; width: 9px; height: 9px; border-radius: 50%; background: var(--teal);
}
.faq details {
  background: var(--card); border: 1px solid var(--line); border-radius: 12px;
  padding: 4px 22px; margin-bottom: 12px;
}
.faq summary {
  font-family: var(--ui); font-weight: 600; font-size: 1.02rem; cursor: pointer;
  padding: 16px 0; list-style: none; display: flex; justify-content: space-between; align-items: center; gap: 16px;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: ""; width: 10px; height: 10px; flex: none; border-right: 2px solid var(--teal); border-bottom: 2px solid var(--teal);
  transform: rotate(45deg); transition: transform .18s ease; margin-right: 6px;
}
.faq details[open] summary::after { transform: rotate(225deg); }
.faq details p { padding: 0 0 18px; margin: 0; color: var(--ink-soft); font-size: .98rem; }

/* ===================== CTA ===================== */
.cta { background: var(--teal); color: #fff; padding: 64px 0; }
.cta-inner { display: flex; align-items: center; justify-content: space-between; gap: 40px; }
.cta h2 { font-size: clamp(1.6rem, 3vw, 2.3rem); margin-bottom: 10px; }
.cta p { color: #D6EEEE; margin: 0; max-width: 520px; }

/* ===================== FOOTER ===================== */
.site-foot { background: var(--ink); color: #C9CFDD; padding: 60px 0 0; }
.foot-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr 1.6fr; gap: 40px; padding-bottom: 44px; }
.foot-word { color: #fff; }
.foot-brand p { font-size: .94rem; margin-top: 14px; }
.foot-col h4, .foot-note h4 { font-family: var(--ui); color: #fff; font-size: .95rem; margin-bottom: 16px; }
.foot-col a { display: block; color: #C9CFDD; text-decoration: none; font-size: .94rem; padding: 5px 0; }
.foot-col a:hover { color: var(--amber); }
.foot-note p { font-size: .94rem; }
.foot-legal {
  display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap;
  border-top: 1px solid #2E3950; padding-top: 22px; padding-bottom: 22px;
  font-family: var(--ui); font-size: .82rem; color: #93A0B8;
}

/* ===================== PRINT ===================== */
@media print {
  .site-head, .head-cta, .quickfacts, .cta, .site-foot, .hero-actions, .session-toc { display: none !important; }
  body { background: #fff; color: #000; font-size: 11pt; }
  .wrap { max-width: 100%; padding: 0; }
  .section, .hero { padding: 24px 0; }
  .site-head { position: static; }
  .session { break-inside: avoid; box-shadow: none; border: 1px solid #ccc; margin-bottom: 18px; }
  a { color: #000; text-decoration: none; }
  .hero-grid, .wholetwo, .two-col { grid-template-columns: 1fr; gap: 20px; }
  .principles-grid, .vak-grid, .tech-grid, .assess-grid { grid-template-columns: 1fr 1fr; }
  .session-toc { display: none; }
  .session-head { break-inside: avoid; }
  h1, h2, h3 { break-after: avoid; }
  .vak-card, .assess-card, .tech-card, .principle { break-inside: avoid; }
}

/* ===================== RESPONSIVE ===================== */
@media (max-width: 1024px) {
  .hero-grid { grid-template-columns: 1fr; }
  .principles-grid { grid-template-columns: 1fr 1fr; }
  .assess-grid { grid-template-columns: 1fr 1fr; }
  .wholetwo { grid-template-columns: 1fr; }
  .foot-grid { grid-template-columns: 1fr 1fr; }
  .session-head { grid-template-columns: auto 1fr; }
  .session-meta { grid-column: 2; flex-direction: row; align-items: center; flex-wrap: wrap; }
}

@media (max-width: 768px) {
  body { font-size: 1.03rem; }
  .section { padding: 60px 0; }
  .head-nav { display: none; }           /* collapse nav behind nothing; print + anchor links remain */
  .head-cta span { display: none; }
  .head-cta { padding: 11px 13px; }
  .two-col, .vak-grid, .tech-grid { grid-template-columns: 1fr; }
  .principles-grid, .assess-grid, .session-toc { grid-template-columns: 1fr; }
  .session-toc { display: none; }        /* TOC is a nav convenience; sessions stack cleanly */
  .facts-grid { grid-template-columns: repeat(2, 1fr); gap: 28px 12px; }
  .cta-inner { flex-direction: column; align-items: flex-start; }
  .foot-grid { grid-template-columns: 1fr; gap: 28px; }
  .session-head { grid-template-columns: 1fr; gap: 12px; }
  .session-num { width: 54px; height: 54px; font-size: 1.4rem; }
  .session-meta { grid-column: auto; }
  .session-body { padding: 10px 20px 24px; }
  .session-head { padding: 22px; }
  .foot-legal { flex-direction: column; }
}

@media (max-width: 420px) {
  .facts-grid { grid-template-columns: 1fr 1fr; }
  .hero { padding-top: 48px; }
  .hero-actions .btn { width: 100%; justify-content: center; }
}