/* ============================================
   TISC.AI — Shared Design System
   ============================================ */

:root {
  --ink: #0E1F3D;
  --ink-soft: #1F3458;
  --charcoal: #1A1D21;
  --paper: #FAF6EC;
  --ivory: #F4EFE3;
  --gold: #A37E2C;
  --gold-soft: #C9A24E;
  --burgundy: #6B2C39;
  --rule: rgba(14, 31, 61, 0.18);
  --rule-strong: rgba(14, 31, 61, 0.42);
  --muted: rgba(14, 31, 61, 0.62);
  --muted-light: rgba(14, 31, 61, 0.45);
}

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

html {
  scroll-behavior: smooth;
}

body {
  background: var(--paper);
  color: var(--ink);
  font-family: 'IBM Plex Sans', sans-serif;
  font-weight: 400;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

/* ============================================
   NAV
   ============================================ */
.nav {
  position: sticky;
  top: 0;
  background: rgba(250, 246, 236, 0.92);
  backdrop-filter: saturate(140%) blur(12px);
  -webkit-backdrop-filter: saturate(140%) blur(12px);
  border-bottom: 1px solid var(--rule);
  z-index: 100;
}
.nav-inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 18px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-mark {
  font-family: 'Fraunces', serif;
  font-weight: 500;
  font-size: 22px;
  letter-spacing: -0.012em;
  color: var(--ink);
  font-variation-settings: "opsz" 144;
}
.nav-mark .ext { color: var(--gold); font-weight: 300; font-size: 0.7em; }
.nav-links {
  display: flex;
  gap: 32px;
  align-items: center;
  list-style: none;
}
.nav-links a {
  font-family: 'IBM Plex Sans', sans-serif;
  font-size: 14px;
  font-weight: 400;
  color: var(--ink-soft);
  letter-spacing: 0.005em;
  transition: color 0.15s ease;
}
.nav-links a:hover { color: var(--ink); }
.nav-links a.active { color: var(--ink); }
.nav-links a.cta {
  background: var(--ink);
  color: var(--ivory);
  padding: 9px 18px;
  border-radius: 2px;
  font-weight: 500;
  letter-spacing: 0.01em;
  transition: background 0.15s ease;
}
.nav-links a.cta:hover { background: var(--charcoal); }

/* ============================================
   PAGE LAYOUT
   ============================================ */
.container {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 32px;
}
.container-narrow {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 32px;
}

section {
  padding: 96px 0 72px;
  border-bottom: 1px solid var(--rule);
}
section.no-rule { border-bottom: none; }

.section-header {
  display: flex;
  align-items: baseline;
  gap: 16px;
  margin-bottom: 56px;
}
.section-num {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--gold);
  font-weight: 500;
}
.section-title {
  font-family: 'Fraunces', serif;
  font-weight: 400;
  font-size: clamp(28px, 4vw, 38px);
  letter-spacing: -0.015em;
  font-variation-settings: "opsz" 144;
}
.section-rule {
  flex: 1;
  height: 1px;
  background: var(--rule);
  margin-bottom: 8px;
}

/* ============================================
   HERO
   ============================================ */
.hero {
  padding: 96px 0 80px;
  border-bottom: 1px solid var(--rule);
}
.hero-eyebrow {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 22px;
  font-weight: 500;
}
.hero-line {
  font-family: 'Fraunces', serif;
  font-weight: 400;
  font-size: clamp(44px, 7.5vw, 84px);
  line-height: 1.02;
  letter-spacing: -0.025em;
  color: var(--ink);
  margin-bottom: 28px;
  max-width: 16ch;
  font-variation-settings: "opsz" 144;
}
.hero-line em { font-style: italic; color: var(--ink-soft); }
.hero-sub {
  font-family: 'EB Garamond', serif;
  font-style: italic;
  font-size: clamp(18px, 2.4vw, 22px);
  line-height: 1.45;
  color: var(--ink-soft);
  max-width: 60ch;
  margin-bottom: 36px;
}
.hero-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--ink);
  color: var(--ivory);
  padding: 16px 28px;
  font-family: 'IBM Plex Sans', sans-serif;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.02em;
  border-radius: 2px;
  transition: background 0.15s ease;
}
.hero-cta:hover { background: var(--charcoal); }
.hero-cta .arrow { transition: transform 0.2s ease; }
.hero-cta:hover .arrow { transform: translateX(3px); }

/* Smaller hero for sub-pages */
.hero-sub-page {
  padding: 80px 0 64px;
}
.hero-sub-page .hero-line {
  font-size: clamp(38px, 6vw, 64px);
}

/* ============================================
   SCENARIO LIST (When to engage)
   ============================================ */
.scenario-list {
  list-style: none;
}
.scenario-list li {
  padding: 22px 0 22px 32px;
  border-top: 1px solid var(--rule);
  position: relative;
  font-family: 'EB Garamond', serif;
  font-size: 19px;
  line-height: 1.45;
  color: var(--ink-soft);
  max-width: 56ch;
}
.scenario-list li:last-child { border-bottom: 1px solid var(--rule); }
.scenario-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 32px;
  width: 16px;
  height: 1px;
  background: var(--gold);
}

/* ============================================
   SERVICE GRID (condensed for home)
   ============================================ */
.service-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--rule);
  border: 1px solid var(--rule);
}
@media (max-width: 760px) {
  .service-grid { grid-template-columns: 1fr; }
}
.service-cell {
  background: var(--paper);
  padding: 32px 28px;
}
.service-cell-num {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.2em;
  color: var(--gold);
  font-weight: 500;
  margin-bottom: 12px;
}
.service-cell-name {
  font-family: 'Fraunces', serif;
  font-weight: 500;
  font-size: 20px;
  letter-spacing: -0.005em;
  color: var(--ink);
  margin-bottom: 10px;
  font-variation-settings: "opsz" 144;
}
.service-cell-desc {
  font-family: 'IBM Plex Sans', sans-serif;
  font-size: 14px;
  line-height: 1.55;
  color: var(--ink-soft);
}

/* "See full services" link */
.section-footer-link {
  margin-top: 32px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: 'IBM Plex Sans', sans-serif;
  font-size: 14px;
  font-weight: 500;
  color: var(--ink);
  letter-spacing: 0.01em;
  border-bottom: 1px solid var(--gold);
  padding-bottom: 4px;
  transition: gap 0.2s ease;
}
.section-footer-link:hover { gap: 12px; }

/* ============================================
   WHY (3-column pillar grid)
   ============================================ */
.why-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 32px;
}
.why-item {
  border-top: 2px solid var(--ink);
  padding-top: 18px;
}
.why-item-name {
  font-family: 'Fraunces', serif;
  font-weight: 500;
  font-size: 22px;
  color: var(--ink);
  margin-bottom: 12px;
  font-variation-settings: "opsz" 144;
  letter-spacing: -0.01em;
}
.why-item-desc {
  font-family: 'IBM Plex Sans', sans-serif;
  font-size: 15px;
  line-height: 1.6;
  color: var(--ink-soft);
}

/* ============================================
   CTA BLOCK (dark, mirrors one-pager)
   ============================================ */
.cta-block {
  background: var(--ink);
  color: var(--ivory);
  margin: 96px 0 0;
}
.cta-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 64px 32px;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 48px;
  align-items: center;
}
.cta-label {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--gold-soft);
  font-weight: 500;
  margin-bottom: 12px;
}
.cta-line {
  font-family: 'Fraunces', serif;
  font-weight: 400;
  font-size: clamp(28px, 4vw, 40px);
  line-height: 1.15;
  letter-spacing: -0.015em;
  color: var(--ivory);
  font-variation-settings: "opsz" 144;
}
.cta-button {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--gold-soft);
  color: var(--ink);
  padding: 16px 28px;
  font-family: 'IBM Plex Sans', sans-serif;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.02em;
  border-radius: 2px;
  transition: background 0.15s ease;
}
.cta-button:hover { background: #DEB766; }

/* ============================================
   FOOTER
   ============================================ */
.footer {
  padding: 48px 0 56px;
  background: var(--paper);
  border-top: 1px solid var(--rule);
}
.footer-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 32px;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 24px;
}
.footer-mark {
  font-family: 'Fraunces', serif;
  font-weight: 500;
  font-size: 18px;
  color: var(--ink);
  font-variation-settings: "opsz" 144;
}
.footer-mark .ext { color: var(--gold); font-weight: 300; font-size: 0.75em; }
.footer-tagline {
  font-family: 'EB Garamond', serif;
  font-style: italic;
  font-size: 14px;
  color: var(--muted);
}
.footer-meta {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted-light);
}

/* ============================================
   ABOUT PAGE — Bios
   ============================================ */
.intro-block {
  font-family: 'EB Garamond', serif;
  font-size: 22px;
  line-height: 1.5;
  color: var(--ink-soft);
  max-width: 60ch;
  margin-bottom: 24px;
}
.intro-block strong {
  color: var(--ink);
  font-weight: 500;
}
.intro-block + .intro-block { margin-top: 16px; }

.bios {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
}
.bio {
  display: flex;
  flex-direction: column;
}
.bio-label {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold);
  font-weight: 500;
  margin-bottom: 16px;
}
.bio-name {
  font-family: 'Fraunces', serif;
  font-weight: 500;
  font-size: 30px;
  letter-spacing: -0.018em;
  color: var(--ink);
  margin-bottom: 4px;
  font-variation-settings: "opsz" 144;
}
.bio-role {
  font-family: 'IBM Plex Sans', sans-serif;
  font-size: 14px;
  font-weight: 500;
  color: var(--gold);
  letter-spacing: 0.005em;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--rule);
}
.bio-body {
  font-family: 'IBM Plex Sans', sans-serif;
  font-size: 15px;
  line-height: 1.65;
  color: var(--ink-soft);
}
.bio-body p + p { margin-top: 12px; }

.disclosure {
  background: var(--ivory);
  border: 1px solid var(--rule);
  padding: 40px 44px;
  max-width: 760px;
}
.disclosure-eyebrow {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold);
  font-weight: 500;
  margin-bottom: 16px;
}
.disclosure-title {
  font-family: 'Fraunces', serif;
  font-weight: 500;
  font-size: 26px;
  letter-spacing: -0.012em;
  color: var(--ink);
  margin-bottom: 18px;
  font-variation-settings: "opsz" 144;
}
.disclosure-body {
  font-family: 'IBM Plex Sans', sans-serif;
  font-size: 15px;
  line-height: 1.65;
  color: var(--ink-soft);
}
.disclosure-body p + p { margin-top: 12px; }

/* ============================================
   SERVICES PAGE
   ============================================ */
.services-list {
  display: flex;
  flex-direction: column;
}
.service-detail {
  padding: 48px 0;
  border-top: 1px solid var(--rule);
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 48px;
  align-items: start;
}
.service-detail:first-child { border-top: 2px solid var(--ink); padding-top: 36px; }
.service-detail:last-child { border-bottom: 1px solid var(--rule); }

.service-detail-meta {
  display: flex;
  flex-direction: column;
}
.service-detail-num {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--gold);
  font-weight: 500;
  margin-bottom: 12px;
}
.service-detail-name {
  font-family: 'Fraunces', serif;
  font-weight: 500;
  font-size: 26px;
  line-height: 1.15;
  letter-spacing: -0.015em;
  color: var(--ink);
  font-variation-settings: "opsz" 144;
}

.service-detail-content {
  display: flex;
  flex-direction: column;
}
.service-detail-pitch {
  font-family: 'EB Garamond', serif;
  font-style: italic;
  font-size: 18px;
  line-height: 1.5;
  color: var(--ink-soft);
  margin-bottom: 20px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--rule);
}
.service-detail-includes-label {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 500;
  margin-bottom: 12px;
}
.service-detail-includes {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 8px 24px;
}
.service-detail-includes li {
  font-family: 'IBM Plex Sans', sans-serif;
  font-size: 14px;
  line-height: 1.5;
  color: var(--ink-soft);
  padding-left: 14px;
  position: relative;
}
.service-detail-includes li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--gold);
}

/* Engagement model section */
.engagement-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 32px;
  margin-top: 24px;
}
.engagement-item {
  border-top: 2px solid var(--ink);
  padding-top: 18px;
}
.engagement-item-name {
  font-family: 'Fraunces', serif;
  font-weight: 500;
  font-size: 20px;
  color: var(--ink);
  margin-bottom: 8px;
  font-variation-settings: "opsz" 144;
}
.engagement-item-best {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold);
  font-weight: 500;
  margin-bottom: 14px;
}
.engagement-item-desc {
  font-family: 'IBM Plex Sans', sans-serif;
  font-size: 14px;
  line-height: 1.6;
  color: var(--ink-soft);
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 760px) {
  .container { padding: 0 22px; }
  .container-narrow { padding: 0 22px; }
  .nav-inner { padding: 14px 22px; }
  .nav-links { gap: 18px; }
  .nav-links a:not(.cta) {
    display: none;
  }
  /* Keep nav functional on mobile via the CTA at minimum */
  .nav-links .nav-link-mobile { display: inline-block; font-size: 13px; }

  section { padding: 64px 0 48px; }
  .hero { padding: 64px 0 56px; }
  .hero-sub-page { padding: 56px 0 44px; }

  .section-header { gap: 12px; margin-bottom: 36px; flex-wrap: wrap; }

  .bios { grid-template-columns: 1fr; gap: 48px; }
  .disclosure { padding: 28px 24px; }

  .service-detail {
    grid-template-columns: 1fr;
    gap: 20px;
    padding: 36px 0;
  }
  .service-detail-includes { grid-template-columns: 1fr; }

  .cta-inner {
    grid-template-columns: 1fr;
    padding: 48px 22px;
    gap: 28px;
  }

  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }
}

@media (max-width: 480px) {
  .scenario-list li { font-size: 17px; padding: 18px 0 18px 28px; }
  .nav-links { gap: 12px; }
}