/* ══════════════════════════════════════════════════
   Principia Academy — Single Source of Truth
   ══════════════════════════════════════════════════ */

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

:root {
  --parchment: #f4efe4;
  --parchment-dark: #ede6d6;
  --brown: #2c1a0e;
  --brown-mid: #5c3d1e;
  --gold: #b8922a;
  --gold-light: #d4aa50;
  --gold-dim: rgba(184, 146, 42, 0.35);
}

html,
body {
  height: 100%;
}

body {
  background-color: var(--parchment);
  color: var(--brown);
  font-family: "EB Garamond", Georgia, serif;
  display: flex;
  flex-direction: column;
  align-items: center;
  min-height: 100vh;
}

/* ── Parchment texture overlay ── */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='300' height='300'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.04'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 0;
}

/* ══════════════════════════════════════════════════
   HOMEPAGE-SPECIFIC STYLES
   ══════════════════════════════════════════════════ */

.home-main {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 720px;
  padding: 4rem 2rem 0;
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* Anno Domini */
.anno {
  font-family: "Cinzel", serif;
  font-size: 0.62rem;
  letter-spacing: 0.35em;
  color: var(--gold);
  text-transform: uppercase;
  margin-bottom: 1rem;
}

/* Wordmark */
.wordmark {
  font-family: "Cormorant Garamond", Georgia, serif;
  font-weight: 300;
  font-size: clamp(4.5rem, 14vw, 7.5rem);
  letter-spacing: 0.22em;
  line-height: 1;
  color: var(--brown);
  text-transform: uppercase;
  margin-bottom: 0.6rem;
  text-align: center;
}

/* Tagline */
.tagline {
  font-family: "Cormorant Garamond", Georgia, serif;
  font-style: italic;
  font-weight: 300;
  font-size: 1.15rem;
  color: var(--brown-mid);
  letter-spacing: 0.06em;
  text-align: center;
  margin-bottom: 0.5rem;
}

/* Newton Latin */
.newton-latin {
  font-family: "Cinzel", serif;
  font-size: 0.72rem;
  letter-spacing: 0.25em;
  color: var(--gold);
  text-align: center;
  margin-bottom: 3rem;
}

/* Gauntlet Diagram */
.diagram-wrap {
  margin: 0 auto 3rem;
  width: 280px;
  height: 280px;
}

/* Homepage navigation rule */
.nav-rule {
  width: 100%;
  max-width: 480px;
  height: 1px;
  background: linear-gradient(
    to right,
    transparent,
    var(--gold-dim),
    var(--gold),
    var(--gold-dim),
    transparent
  );
  margin-bottom: 2rem;
}

.home-nav {
  display: flex;
  gap: 0.5rem 2rem;
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: 2rem;
}

.home-nav a {
  font-family: "Cinzel", serif;
  font-size: 0.72rem;
  letter-spacing: 0.3em;
  color: var(--brown-mid);
  text-decoration: none;
  text-transform: uppercase;
  transition: color 0.25s;
  padding: 0.2rem 0;
  position: relative;
}

.home-nav a::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--gold);
  transition: width 0.3s;
}

.home-nav a:hover {
  color: var(--gold);
}
.home-nav a:hover::after {
  width: 100%;
}

.home-nav .sep {
  color: var(--gold-light);
  font-size: 0.5rem;
  display: flex;
  align-items: center;
}

/* ══════════════════════════════════════════════════
   SUBPAGE HEADER
   ══════════════════════════════════════════════════ */

.site-header {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 720px;
  padding: 2.5rem 2rem 0;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.back-link {
  align-self: flex-start;
  font-family: "Cinzel", serif;
  font-size: 0.62rem;
  letter-spacing: 0.25em;
  color: var(--gold);
  text-decoration: none;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
  transition: opacity 0.2s;
}
.back-link:hover {
  opacity: 0.6;
}

.site-wordmark {
  font-family: "Cormorant Garamond", Georgia, serif;
  font-weight: 300;
  font-size: 1.5rem;
  letter-spacing: 0.35em;
  color: var(--brown);
  text-transform: uppercase;
  text-decoration: none;
  margin-bottom: 0.3rem;
}

.header-rule {
  width: 100%;
  max-width: 480px;
  height: 1px;
  background: linear-gradient(
    to right,
    transparent,
    var(--gold-dim),
    var(--gold),
    var(--gold-dim),
    transparent
  );
  margin: 1rem 0;
}

/* ══════════════════════════════════════════════════
   ORNAMENT
   ══════════════════════════════════════════════════ */

.ornament {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--gold);
  margin-bottom: 1rem;
}

.ornament-line {
  width: 56px;
  height: 1px;
  background: linear-gradient(to right, transparent, var(--gold));
}

.ornament-line.right {
  background: linear-gradient(to left, transparent, var(--gold));
}

.ornament-diamond {
  font-size: 0.55rem;
  letter-spacing: 0;
}

/* ══════════════════════════════════════════════════
   SUBPAGE NAV
   ══════════════════════════════════════════════════ */

.page-nav {
  display: flex;
  gap: 0.5rem 1.75rem;
  flex-wrap: wrap;
  justify-content: center;
  margin: 0 auto 2rem;
}

.page-nav a {
  font-family: "Cinzel", serif;
  font-size: 0.65rem;
  letter-spacing: 0.28em;
  color: var(--brown-mid);
  text-decoration: none;
  text-transform: uppercase;
  transition: color 0.2s;
  padding: 0.2rem 0;
  position: relative;
}

.page-nav a::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--gold);
  transition: width 0.3s;
}

.page-nav a:hover {
  color: var(--gold);
}
.page-nav a:hover::after {
  width: 100%;
}
.page-nav a.active {
  color: var(--gold);
}

.page-nav .sep {
  color: var(--gold-light);
  font-size: 0.45rem;
  display: flex;
  align-items: center;
}

/* ══════════════════════════════════════════════════
   MAIN CONTENT (subpages)
   ══════════════════════════════════════════════════ */

main {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 680px;
  padding: 2rem 2rem 4rem;
  flex: 1;
}

/* ══════════════════════════════════════════════════
   PAGE TITLE
   ══════════════════════════════════════════════════ */

.page-title {
  font-family: "Cormorant Garamond", Georgia, serif;
  font-weight: 300;
  font-size: clamp(2.2rem, 6vw, 3.5rem);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--brown);
  text-align: center;
  margin-bottom: 0.35rem;
}

.page-subtitle {
  font-family: "Cormorant Garamond", Georgia, serif;
  font-style: italic;
  font-size: 1.05rem;
  color: var(--brown-mid);
  text-align: center;
  margin-bottom: 2.5rem;
}

/* ══════════════════════════════════════════════════
   SECTIONS
   ══════════════════════════════════════════════════ */

.section {
  margin-bottom: 2.75rem;
}

.section-label {
  font-family: "Cinzel", serif;
  font-size: 0.62rem;
  letter-spacing: 0.3em;
  color: var(--gold);
  text-transform: uppercase;
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.section-label::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--gold-dim);
}

.section-body {
  font-size: 1.05rem;
  line-height: 1.85;
  color: var(--brown);
}

.section-body p + p {
  margin-top: 1em;
}

/* ══════════════════════════════════════════════════
   PAPER LIST
   ══════════════════════════════════════════════════ */

.paper-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.paper-item {
  border-left: 1px solid var(--gold-dim);
  padding-left: 1.25rem;
}

.paper-title {
  font-family: "Cormorant Garamond", Georgia, serif;
  font-size: 1rem;
  font-weight: 400;
  color: var(--brown);
  text-decoration: none;
  display: block;
  margin-bottom: 0.2rem;
  transition: color 0.2s;
}
.paper-title:hover {
  color: var(--gold);
}

.paper-meta {
  font-family: "Cinzel", serif;
  font-size: 0.58rem;
  letter-spacing: 0.2em;
  color: var(--gold);
  opacity: 0.7;
}

/* ══════════════════════════════════════════════════
   AGENT GRID
   ══════════════════════════════════════════════════ */

.agent-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

@media (max-width: 520px) {
  .agent-grid {
    grid-template-columns: 1fr;
  }
}

.agent-card {
  border: 1px solid var(--gold-dim);
  padding: 1.1rem 1.25rem;
  background: rgba(237, 230, 214, 0.4);
}

.agent-name {
  font-family: "Cinzel", serif;
  font-size: 0.68rem;
  letter-spacing: 0.25em;
  color: var(--gold);
  margin-bottom: 0.4rem;
}

.agent-desc {
  font-size: 0.92rem;
  line-height: 1.6;
  color: var(--brown-mid);
}

/* ══════════════════════════════════════════════════
   CTA BLOCK
   ══════════════════════════════════════════════════ */

.cta-block {
  text-align: center;
  padding: 2.5rem 1rem;
  border-top: 1px solid var(--gold-dim);
  border-bottom: 1px solid var(--gold-dim);
}

.cta-latin {
  font-family: "Cinzel", serif;
  font-size: 0.65rem;
  letter-spacing: 0.35em;
  color: var(--gold);
  margin-bottom: 0.75rem;
}

.cta-text {
  font-family: "Cormorant Garamond", Georgia, serif;
  font-style: italic;
  font-size: 1.1rem;
  color: var(--brown-mid);
  margin-bottom: 1.25rem;
}

.cta-link {
  display: inline-block;
  font-family: "Cinzel", serif;
  font-size: 0.65rem;
  letter-spacing: 0.3em;
  color: var(--brown);
  border: 1px solid var(--gold);
  padding: 0.65rem 1.75rem;
  text-decoration: none;
  text-transform: uppercase;
  transition: all 0.25s;
}
.cta-link:hover {
  background: var(--brown);
  color: var(--parchment);
  border-color: var(--brown);
}

/* ══════════════════════════════════════════════════
   FOOTER
   ══════════════════════════════════════════════════ */

footer {
  position: relative;
  z-index: 1;
  width: 100%;
  background-color: var(--brown);
  color: rgba(244, 239, 228, 0.65);
  text-align: center;
  padding: 2.5rem 2rem;
  margin-top: auto;
}

.footer-quote {
  font-family: "Cormorant Garamond", Georgia, serif;
  font-style: italic;
  font-size: 1rem;
  line-height: 1.7;
  max-width: 480px;
  margin: 0 auto 1.25rem;
  color: rgba(244, 239, 228, 0.75);
}

.footer-rule {
  width: 120px;
  height: 1px;
  background: rgba(184, 146, 42, 0.4);
  margin: 0 auto 1rem;
}

.footer-domain {
  font-family: "Cinzel", serif;
  font-size: 0.65rem;
  letter-spacing: 0.35em;
  color: var(--gold);
  opacity: 0.7;
}

.footer-copy {
  font-family: "Cinzel", serif;
  font-size: 0.55rem;
  letter-spacing: 0.2em;
  color: rgba(244, 239, 228, 0.3);
  margin-top: 0.75rem;
}

/* ══════════════════════════════════════════════════
   CHATBOT PLACEHOLDER
   ══════════════════════════════════════════════════ */

.chatbot-toggle {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 100;
  width: 48px;
  height: 48px;
  border: 1px solid var(--gold);
  background: var(--parchment);
  color: var(--gold);
  font-family: "Cinzel", serif;
  font-size: 1.2rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
  box-shadow: 0 2px 12px rgba(44, 26, 14, 0.12);
}

.chatbot-toggle:hover {
  background: var(--brown);
  color: var(--parchment);
  border-color: var(--brown);
}

.chatbot-panel {
  position: fixed;
  bottom: 0;
  right: 0;
  z-index: 99;
  width: 380px;
  max-width: 100vw;
  height: 520px;
  max-height: 80vh;
  background: var(--parchment);
  border-left: 1px solid var(--gold-dim);
  border-top: 1px solid var(--gold-dim);
  box-shadow: -4px -4px 24px rgba(44, 26, 14, 0.1);
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform 0.35s ease;
}

.chatbot-panel.open {
  transform: translateX(0);
}

.chatbot-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--gold-dim);
  flex-shrink: 0;
}

.chatbot-title {
  font-family: "Cinzel", serif;
  font-size: 0.62rem;
  letter-spacing: 0.3em;
  color: var(--gold);
  text-transform: uppercase;
}

.chatbot-close {
  background: none;
  border: none;
  color: var(--brown-mid);
  font-size: 1.1rem;
  cursor: pointer;
  padding: 0.2rem;
  transition: color 0.2s;
}
.chatbot-close:hover {
  color: var(--gold);
}

.chatbot-messages {
  flex: 1;
  overflow-y: auto;
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.chatbot-message {
  max-width: 85%;
  padding: 0.85rem 1rem;
  font-size: 0.92rem;
  line-height: 1.6;
  color: var(--brown);
}

.chatbot-message.agent {
  align-self: flex-start;
  background: rgba(237, 230, 214, 0.6);
  border-left: 2px solid var(--gold-dim);
}

.chatbot-message.user {
  align-self: flex-end;
  background: rgba(184, 146, 42, 0.08);
  border-right: 2px solid var(--gold-dim);
}

.chatbot-input-area {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 1rem;
  border-top: 1px solid var(--gold-dim);
  flex-shrink: 0;
}

.chatbot-input {
  flex: 1;
  border: 1px solid var(--gold-dim);
  background: transparent;
  padding: 0.55rem 0.85rem;
  font-family: "EB Garamond", Georgia, serif;
  font-size: 0.95rem;
  color: var(--brown);
  outline: none;
  transition: border-color 0.2s;
}
.chatbot-input:focus {
  border-color: var(--gold);
}
.chatbot-input::placeholder {
  color: var(--brown-mid);
  opacity: 0.5;
}

.chatbot-send {
  background: none;
  border: 1px solid var(--gold);
  color: var(--gold);
  font-family: "Cinzel", serif;
  font-size: 0.58rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  padding: 0.55rem 1rem;
  cursor: pointer;
  transition: all 0.25s;
}
.chatbot-send:hover {
  background: var(--brown);
  color: var(--parchment);
  border-color: var(--brown);
}

/* ══════════════════════════════════════════════════
   CHARTER PAGES (Markdown rendered)
   ══════════════════════════════════════════════════ */

.charter-content h1 {
  font-family: "Cormorant Garamond", Georgia, serif;
  font-weight: 300;
  font-size: clamp(1.8rem, 5vw, 2.8rem);
  letter-spacing: 0.15em;
  color: var(--brown);
  margin-bottom: 1.5rem;
}

.charter-content h2 {
  font-family: "Cinzel", serif;
  font-size: 0.68rem;
  letter-spacing: 0.3em;
  color: var(--gold);
  text-transform: uppercase;
  margin: 2rem 0 0.75rem;
}

.charter-content h3 {
  font-family: "Cormorant Garamond", Georgia, serif;
  font-weight: 500;
  font-size: 1.15rem;
  color: var(--brown);
  margin: 1.5rem 0 0.5rem;
}

.charter-content p,
.charter-content li {
  font-size: 1.05rem;
  line-height: 1.85;
  color: var(--brown);
}

.charter-content strong {
  color: var(--brown);
}

.charter-content em {
  color: var(--brown-mid);
}

.charter-content hr {
  border: none;
  height: 1px;
  background: var(--gold-dim);
  margin: 2rem 0;
}

.charter-content ol,
.charter-content ul {
  padding-left: 1.5rem;
}

.charter-content li + li {
  margin-top: 0.5rem;
}


/* ══════════════════════════════════════════════════
   CONVERSION / PARTNER LAYER
   ══════════════════════════════════════════════════ */
.home-intro {
  max-width: 760px;
  text-align: center;
  color: var(--brown-mid);
  font-size: 1.08rem;
  line-height: 1.65;
  margin-bottom: 1.75rem;
}

.home-lead {
  font-size: 1.28rem;
  color: var(--brown);
  margin-bottom: 0.9rem;
}

.home-cta-row {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: 2.5rem;
}

.primary-cta,
.secondary-cta,
.cta-link {
  display: inline-block;
  text-decoration: none;
  transition: transform 0.2s ease, opacity 0.2s ease, background-color 0.2s ease;
}

.primary-cta,
.secondary-cta {
  font-family: "Cinzel", serif;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-size: 0.72rem;
  padding: 0.95rem 1.3rem;
  border: 1px solid var(--gold);
}

.primary-cta {
  background: var(--gold);
  color: var(--parchment);
}

.secondary-cta {
  color: var(--brown);
  background: transparent;
}

.primary-cta:hover,
.secondary-cta:hover,
.cta-link:hover {
  transform: translateY(-1px);
  opacity: 0.9;
}

.home-proof-grid {
  width: 100%;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
  margin: 0 0 2.25rem;
}

.proof-card {
  border: 1px solid rgba(184, 146, 42, 0.28);
  padding: 1rem 1rem 1.1rem;
  background: rgba(255,255,255,0.25);
  min-height: 150px;
}

.proof-card p:last-child {
  line-height: 1.55;
  color: var(--brown-mid);
}

@media (max-width: 720px) {
  .home-main {
    padding-top: 2.75rem;
  }

  .home-intro {
    font-size: 1rem;
  }

  .home-lead {
    font-size: 1.14rem;
  }

  .home-nav {
    gap: 0.5rem 1rem;
  }

  .home-nav .sep,
  .page-nav .sep {
    display: none;
  }
}


.outputs-list {
  list-style: none;
  padding-left: 0;
}
.outputs-list li {
  margin: 0.6rem 0;
}
.outputs-list a {
  color: #d4b15a;
  text-decoration: none;
}
.outputs-list a:hover {
  text-decoration: underline;
}