/* ==========================================================================
   Texas AI Learning Center — institutional design system
   Single fixed light theme (warm paper / deep navy / muted gold) by design —
   not adaptive to OS dark mode; see brief section 4.
   ========================================================================== */

:root {
  --paper: #F7F5F0;
  --white: #FFFFFF;
  --navy: #0B1B4D;
  --navy-soft: #192B63;
  --gold: #D99A32;
  --border: #D8D0BE;

  --font-head: "Oswald", "Arial Narrow", sans-serif;
  --font-body: "Roboto Condensed", Arial, sans-serif;

  --container: 1280px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

body {
  background: var(--paper);
  color: var(--navy-soft);
  font-family: var(--font-body);
  font-size: 18px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  display: flex;
  flex-direction: column;
  min-height: 100%;
}

main { flex: 1; }

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

a { color: inherit; text-decoration: none; }

h1, h2, h3, h4 {
  font-family: var(--font-head);
  color: var(--navy);
  font-weight: 700;
  text-wrap: balance;
  line-height: 1.15;
}

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

/* ---------- Skip link ---------- */

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--gold);
  color: var(--navy);
  font-weight: 700;
  padding: 0.75rem 1.25rem;
  z-index: 1000;
}
.skip-link:focus { left: 1rem; top: 1rem; }

/* ---------- Focus states ---------- */

a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 2px;
}

/* ---------- Eyebrow / labels / rules ---------- */

.eyebrow {
  font-family: var(--font-head);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 14px;
  font-weight: 600;
  color: var(--gold);
}

.rule {
  border: none;
  border-top: 1px solid var(--border);
  margin: 0;
}

.rule-gold {
  border: none;
  border-top: 2px solid var(--gold);
  width: 64px;
  margin: 1rem 0 1.5rem;
}
.rule-gold.center { margin-left: auto; margin-right: auto; }

/* ---------- Buttons ---------- */

.btn {
  display: inline-block;
  font-family: var(--font-head);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-size: 15px;
  font-weight: 600;
  padding: 0.95rem 1.9rem;
  border: 2px solid transparent;
  transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.btn-primary {
  background: var(--navy);
  color: var(--white);
  border-color: var(--navy);
}
.btn-primary:hover { background: var(--gold); border-color: var(--gold); color: var(--navy); }

.btn-secondary {
  background: transparent;
  color: var(--navy);
  border-color: var(--navy);
}
.btn-secondary:hover { background: var(--navy); color: var(--white); }

.btn-on-dark {
  background: transparent;
  color: var(--white);
  border-color: var(--white);
}
.btn-on-dark:hover { background: var(--gold); border-color: var(--gold); color: var(--navy); }

/* ==========================================================================
   Header / Navigation
   ========================================================================== */

.site-header {
  background: var(--navy);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.1rem 0;
}

.wordmark {
  display: inline-flex;
  align-items: center;
}
.wordmark img {
  height: 44px;
  width: auto;
  display: block;
}

.nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid rgba(255,255,255,0.35);
  color: var(--white);
  padding: 0.5rem 0.7rem;
  font-size: 20px;
  line-height: 1;
}

.nav-primary { display: flex; align-items: center; }

.nav-links {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 1.9rem;
}

.nav-links > li { position: relative; }

.nav-links a.nav-link {
  display: inline-block;
  font-family: var(--font-head);
  text-transform: uppercase;
  font-size: 14px;
  letter-spacing: 0.05em;
  font-weight: 600;
  color: var(--white);
  opacity: 0.85;
  padding: 0.4rem 0.1rem;
  border-bottom: 2px solid transparent;
}
.nav-links a.nav-link:hover,
.nav-links a.nav-link[aria-current="page"] {
  opacity: 1;
  border-bottom-color: var(--gold);
}

.has-dropdown .dropdown {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 240px;
  background: var(--white);
  border: 1px solid var(--border);
  box-shadow: 0 18px 34px rgba(11,27,77,0.18);
  padding: 0.5rem 0;
  margin-top: 0.6rem;
  list-style: none;
}
.has-dropdown:hover .dropdown,
.has-dropdown:focus-within .dropdown {
  display: block;
}
.dropdown a {
  display: block;
  padding: 0.65rem 1.1rem;
  font-family: var(--font-body);
  font-size: 15px;
  color: var(--navy-soft);
  border-left: 3px solid transparent;
}
.dropdown a:hover { background: var(--paper); border-left-color: var(--gold); color: var(--navy); }

@media (max-width: 900px) {
  .nav-toggle { display: inline-block; }
  .nav-primary {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--navy);
    flex-direction: column;
    align-items: stretch;
    padding: 0.5rem 24px 1.5rem;
    border-top: 1px solid rgba(255,255,255,0.12);
  }
  .nav-primary.open { display: flex; }
  .nav-links { flex-direction: column; align-items: stretch; gap: 0; }
  .nav-links > li { border-bottom: 1px solid rgba(255,255,255,0.1); }
  .nav-links a.nav-link { padding: 0.9rem 0.1rem; width: 100%; }
  .has-dropdown .dropdown {
    display: block;
    position: static;
    box-shadow: none;
    border: none;
    background: rgba(255,255,255,0.04);
    margin: 0 0 0.4rem;
  }
  .dropdown a { color: var(--on-navy-soft, #b9c0d1); }
  .dropdown a:hover { background: rgba(255,255,255,0.08); border-left-color: var(--gold); color: var(--white); }
}

/* ==========================================================================
   Page hero (interior pages)
   ========================================================================== */

.page-hero {
  background: var(--navy);
  color: var(--white);
  padding: 3.5rem 0 3rem;
}
.page-hero .eyebrow { color: var(--gold); }
.page-hero h1 {
  color: var(--white);
  font-size: clamp(2.2rem, 5vw, 3.4rem);
  text-transform: uppercase;
  margin: 0.6rem 0 1rem;
}
.page-hero p.lede {
  color: #C7CCDC;
  font-size: 1.15rem;
  max-width: 620px;
}

/* ==========================================================================
   Home hero
   ========================================================================== */

.hero {
  background: var(--navy);
  color: var(--white);
  padding: 3.5rem 0 4rem;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 3rem;
  align-items: center;
}

.hero h1 {
  color: var(--white);
  text-transform: uppercase;
  line-height: 1;
  margin: 0.9rem 0 1.4rem;
}
.hero h1 .line1 { display: block; font-size: clamp(2.6rem, 6vw, 5.5rem); }
.hero h1 .line2 { display: block; font-size: clamp(1.6rem, 3.4vw, 3rem); color: var(--gold); margin-top: 0.2rem; }

.hero-sub {
  color: #C7CCDC;
  font-size: 1.15rem;
  max-width: 520px;
  margin-bottom: 1.25rem;
}

.hero-tagline {
  font-family: var(--font-body);
  font-style: italic;
  color: var(--gold);
  font-size: 1.1rem;
  margin-bottom: 2rem;
}

.hero-ctas { display: flex; gap: 1rem; flex-wrap: wrap; }

.hero-visual {
  border-left: 2px solid var(--gold);
  padding-left: 2rem;
}
.hero-visual img { border: 1px solid rgba(255,255,255,0.15); }

@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-visual { border-left: none; padding-left: 0; border-top: 2px solid var(--gold); padding-top: 1.5rem; }
}

/* ==========================================================================
   Section scaffolding
   ========================================================================== */

section.block { padding: 4.5rem 0; }
section.block.tight { padding: 3rem 0; }
section.block.on-white { background: var(--white); }
section.block.on-navy { background: var(--navy); color: var(--white); }
section.block.on-navy h2 { color: var(--white); }
section.block.on-navy .eyebrow { color: var(--gold); }

.block-head { margin-bottom: 2.5rem; }
.block-head h2 {
  text-transform: uppercase;
  font-size: clamp(1.8rem, 3.4vw, 2.5rem);
  margin: 0.5rem 0 0.6rem;
}
.block-head p.lede { color: var(--navy-soft); font-size: 1.1rem; max-width: 620px; }
.block-head.center { text-align: center; }
.block-head.center p.lede { margin: 0 auto; }
section.block.on-navy .block-head p.lede { color: #C7CCDC; }

/* ---------- Institutional affiliation strip ---------- */

.affiliation {
  background: var(--white);
  padding: 3rem 0;
  text-align: center;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.affiliation .eyebrow { display: block; margin-bottom: 0.75rem; }
.affiliation h2 {
  font-size: clamp(1.4rem, 2.6vw, 1.9rem);
  text-transform: uppercase;
  margin-bottom: 0.6rem;
}
.affiliation p { font-style: italic; color: var(--navy-soft); }

/* ---------- Focus Areas grid (thin rules, not cards) ---------- */

.focus-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}
.focus-item {
  padding: 0 2rem;
  border-left: 1px solid var(--border);
}
.focus-item:first-child { border-left: none; padding-left: 0; }
.focus-icon { width: 40px; height: 40px; color: var(--navy); margin-bottom: 1.1rem; }
.focus-icon svg { width: 100%; height: 100%; }
.focus-item h3 { font-size: 1.2rem; text-transform: uppercase; margin-bottom: 0.6rem; }
.focus-item p.desc { margin-bottom: 1rem; }
.focus-item ul.topics {
  list-style: none;
  font-size: 0.92rem;
  color: var(--navy-soft);
}
.focus-item ul.topics li { padding: 0.3rem 0; border-top: 1px dotted var(--border); }
.focus-item ul.topics li:first-child { border-top: none; }

@media (max-width: 900px) {
  .focus-grid { grid-template-columns: 1fr 1fr; gap: 2.5rem 0; }
  .focus-item { border-left: none; padding-left: 0; border-top: 1px solid var(--border); padding-top: 2rem; }
  .focus-item:nth-child(1), .focus-item:nth-child(2) { border-top: none; padding-top: 0; }
}
@media (max-width: 600px) {
  .focus-grid { grid-template-columns: 1fr; gap: 0; }
  .focus-item { border-top: 1px solid var(--border); padding: 2rem 0 0; margin-top: 2rem; }
  .focus-item:first-child { border-top: none; padding-top: 0; margin-top: 0; }
}

/* ---------- Numbered editorial rows (What You'll Learn) ---------- */

.numbered-rows { border-top: 1px solid var(--border); }
.numbered-row {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 1.5rem;
  padding: 2rem 0;
  border-bottom: 1px solid var(--border);
  align-items: start;
}
.numbered-row .num {
  font-family: var(--font-head);
  font-size: 2.6rem;
  color: var(--gold);
  opacity: 0.55;
  line-height: 1;
}
.numbered-row h3 { text-transform: uppercase; font-size: 1.15rem; margin-bottom: 0.4rem; }
.numbered-row p { color: var(--navy-soft); max-width: 640px; }

@media (max-width: 640px) {
  .numbered-row { grid-template-columns: 1fr; gap: 0.4rem; }
}

/* ---------- Featured experiences (horizontal separators) ---------- */

.feature-list > * + * { border-top: 1px solid var(--border); }
.feature-row { padding: 2rem 0; display: grid; grid-template-columns: 1fr 1.6fr; gap: 1.5rem; }
.feature-row h3 { text-transform: uppercase; font-size: 1.2rem; }
.feature-row .feature-label {
  font-family: var(--font-head);
  font-size: 12.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--gold);
  margin-top: 0.6rem;
  display: block;
}
.feature-row p { color: var(--navy-soft); }
@media (max-width: 700px) {
  .feature-row { grid-template-columns: 1fr; }
}

/* ---------- Process steps (How We Teach) ---------- */

.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
}
.process-step { text-align: center; padding: 0 1rem; position: relative; }
.process-step .step-index {
  font-family: var(--font-head);
  color: var(--gold);
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  margin-bottom: 0.5rem;
  display: block;
}
.process-step h3 { text-transform: uppercase; font-size: 1.15rem; color: var(--white); margin-bottom: 0.5rem; }
.process-step p { color: #C7CCDC; font-size: 0.98rem; }
@media (max-width: 900px) {
  .process-steps { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 560px) {
  .process-steps { grid-template-columns: 1fr; }
}

/* ---------- Who We Serve ---------- */

.audience-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
}
.audience-item { border-top: 2px solid var(--gold); padding-top: 1.1rem; }
.audience-item h3 { text-transform: uppercase; font-size: 1.05rem; margin-bottom: 0.5rem; }
.audience-item p { color: var(--navy-soft); font-size: 0.98rem; }
@media (max-width: 900px) { .audience-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .audience-grid { grid-template-columns: 1fr; } }

/* ---------- Events ---------- */

.event-list { display: flex; flex-direction: column; gap: 1.5rem; }
.event-item {
  background: var(--white);
  border: 1px solid var(--border);
  padding: 1.75rem;
  display: grid;
  grid-template-columns: 140px 1fr auto;
  gap: 1.5rem;
  align-items: center;
}
.event-date {
  font-family: var(--font-head);
  color: var(--navy);
  text-align: center;
  border-right: 1px solid var(--border);
  padding-right: 1.5rem;
}
.event-date .day { font-size: 2.2rem; line-height: 1; display: block; }
.event-date .month { text-transform: uppercase; letter-spacing: 0.08em; font-size: 0.85rem; color: var(--gold); }
.event-body h3 { text-transform: uppercase; font-size: 1.1rem; margin-bottom: 0.4rem; }
.event-meta { font-size: 0.9rem; color: var(--gold); text-transform: uppercase; letter-spacing: 0.04em; margin-top: 0.5rem; }
@media (max-width: 700px) {
  .event-item { grid-template-columns: 1fr; text-align: left; }
  .event-date { border-right: none; border-bottom: 1px solid var(--border); padding: 0 0 1rem; text-align: left; }
}

.event-photo {
  width: 100%;
  border: 1px solid var(--border);
  margin: 1.5rem 0;
}

.state-note {
  background: var(--white);
  border: 1px solid var(--border);
  border-left: 4px solid var(--gold);
  padding: 1.5rem 1.75rem;
  color: var(--navy-soft);
}

/* ---------- Network activity lists ---------- */

.network-cols {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2.5rem;
}
.network-col { border-top: 2px solid var(--gold); padding-top: 1.2rem; }
.network-col h3 { text-transform: uppercase; font-size: 1.1rem; margin-bottom: 0.8rem; }
.network-col ul { list-style: none; color: var(--navy-soft); font-size: 0.98rem; }
.network-col li { padding: 0.4rem 0; border-top: 1px dotted var(--border); }
.network-col li:first-child { border-top: none; }
@media (max-width: 900px) { .network-cols { grid-template-columns: 1fr; } }

/* ---------- Resource cards (flat) ---------- */

.resource-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}
.resource-card {
  background: var(--white);
  border: 1px solid var(--border);
  padding: 1.75rem;
}
.resource-type {
  font-family: var(--font-head);
  font-size: 12.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--gold);
  display: block;
  margin-bottom: 0.75rem;
}
.resource-card h3 { font-size: 1.1rem; text-transform: uppercase; margin-bottom: 0.5rem; }
.resource-card p { color: var(--navy-soft); font-size: 0.96rem; }
@media (max-width: 900px) { .resource-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 600px) { .resource-grid { grid-template-columns: 1fr; } }

/* ---------- Collaborate CTA ---------- */

.collab-options {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
  margin: 1.75rem 0 2rem;
}
.collab-chip {
  font-family: var(--font-head);
  text-transform: uppercase;
  font-size: 0.85rem;
  letter-spacing: 0.05em;
  border: 1px solid rgba(255,255,255,0.35);
  color: var(--white);
  padding: 0.6rem 1.1rem;
}

/* ---------- Contact ---------- */

.contact-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 3rem;
}
.contact-info h3 { text-transform: uppercase; font-size: 1.05rem; margin: 1.5rem 0 0.5rem; }
.contact-info h3:first-child { margin-top: 0; }
.contact-info p { color: var(--navy-soft); }
.contact-info a.contact-link { color: var(--navy); font-weight: 600; }
.contact-info a.contact-link:hover { color: var(--gold); }

.form-field { margin-bottom: 1.25rem; }
.form-field label {
  display: block;
  font-family: var(--font-head);
  text-transform: uppercase;
  font-size: 0.82rem;
  letter-spacing: 0.05em;
  color: var(--navy);
  margin-bottom: 0.4rem;
}
.form-field input,
.form-field select,
.form-field textarea {
  width: 100%;
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--navy);
  background: var(--white);
  border: 1px solid var(--border);
  padding: 0.75rem 0.9rem;
}
.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
  border-color: var(--gold);
  outline: none;
}
.form-field textarea { resize: vertical; min-height: 120px; }
.form-note { font-size: 0.85rem; color: var(--navy-soft); margin-top: 1rem; }

@media (max-width: 800px) {
  .contact-grid { grid-template-columns: 1fr; }
}

/* ==========================================================================
   Footer
   ========================================================================== */

.site-footer { background: var(--navy); color: #C7CCDC; }
.footer-main {
  padding: 3.5rem 0 2.5rem;
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr 1fr;
  gap: 2.5rem;
}
.footer-col h4 {
  color: var(--white);
  font-family: var(--font-head);
  text-transform: uppercase;
  font-size: 0.88rem;
  letter-spacing: 0.08em;
  margin-bottom: 1rem;
}
.footer-col p { font-size: 0.95rem; }
.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 0.6rem; }
.footer-col a:hover { color: var(--gold); }
.footer-wordmark {
  color: var(--white);
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1.2rem;
  margin-bottom: 0.75rem;
  display: block;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.14);
  padding: 1.5rem 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem;
  font-size: 0.85rem;
}
.footer-tagline {
  font-family: var(--font-head);
  letter-spacing: 0.1em;
  color: var(--gold);
}
.footer-copy { color: #9BA3BC; max-width: 640px; }

@media (max-width: 900px) {
  .footer-main { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 560px) {
  .footer-main { grid-template-columns: 1fr; }
}