/* Cassian AI — brand tokens */
:root {
  --color-bg: #efeae2;
  --color-bg-alt: #ffffff;
  --color-ink: #0a0a0a;
  --color-ink-muted: #3d3d3d;
  --color-line: rgba(10, 10, 10, 0.12);
  --font-serif: Georgia, "Times New Roman", Times, serif;
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.75rem;
  --space-lg: 3rem;
  --space-xl: 5rem;
  --space-2xl: 7.5rem;
  --max-width: 68rem;
  --nav-height: 4rem;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

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

html {
  scroll-behavior: smooth;
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .reveal {
    opacity: 1 !important;
    transform: none !important;
  }

  .hero-atmosphere {
    animation: none !important;
  }
}

body {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 1.125rem;
  line-height: 1.65;
  color: var(--color-ink);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
}

h1,
h2,
h3,
p,
figure {
  margin: 0;
}

ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.container {
  width: min(100% - 2.5rem, var(--max-width));
  margin-inline: auto;
}

/* ——— Nav ——— */
.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 100;
  height: var(--nav-height);
  background: color-mix(in srgb, var(--color-bg) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s var(--ease);
}

.site-header.is-scrolled {
  border-bottom-color: var(--color-line);
}

.nav {
  height: var(--nav-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-sm);
}

.nav-brand {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-decoration: none;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.nav-links a {
  text-decoration: none;
  font-size: 0.95rem;
  color: var(--color-ink-muted);
  transition: color 0.2s var(--ease);
}

.nav-links a:hover {
  color: var(--color-ink);
}

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--color-ink);
  padding: 0.4rem 0.7rem;
  font-family: inherit;
  font-size: 0.85rem;
  cursor: pointer;
}

/* ——— Buttons ——— */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.85rem 1.5rem;
  font-family: inherit;
  font-size: 1rem;
  text-decoration: none;
  border: 1px solid var(--color-ink);
  cursor: pointer;
  transition:
    background 0.25s var(--ease),
    color 0.25s var(--ease),
    transform 0.25s var(--ease);
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  background: var(--color-ink);
  color: #ffffff;
}

.btn-primary:hover {
  background: #222;
  color: #ffffff;
}

.nav-links .btn-primary,
.nav-links .btn-primary:hover {
  color: #ffffff;
}

.btn-ghost {
  background: transparent;
  color: var(--color-ink);
}

.btn-ghost:hover {
  background: var(--color-ink);
  color: var(--color-bg-alt);
}

.cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

/* ——— Hero ——— */
.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  align-items: flex-end;
  padding: calc(var(--nav-height) + 2rem) 0 var(--space-xl);
  overflow: hidden;
}

.hero-atmosphere {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 70% 20%, rgba(255, 255, 255, 0.55), transparent 55%),
    radial-gradient(ellipse 50% 40% at 15% 80%, rgba(0, 0, 0, 0.04), transparent 50%),
    linear-gradient(165deg, #f5f1ea 0%, var(--color-bg) 45%, #e6dfd4 100%);
  z-index: 0;
  animation: atmosphereDrift 18s ease-in-out infinite alternate;
}

.hero-atmosphere::after {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0.35;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size: 180px;
  mix-blend-mode: multiply;
  pointer-events: none;
}

@keyframes atmosphereDrift {
  from {
    transform: scale(1) translate(0, 0);
  }
  to {
    transform: scale(1.04) translate(-1.5%, 1%);
  }
}

.hero-inner {
  position: relative;
  z-index: 1;
  max-width: 40rem;
}

.hero-brand {
  font-size: clamp(2.75rem, 8vw, 5rem);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin-bottom: 0.35rem;
}

.hero-legal {
  font-size: 0.95rem;
  color: var(--color-ink-muted);
  letter-spacing: 0.04em;
  margin-bottom: var(--space-md);
}

.hero-title {
  font-size: clamp(1.35rem, 3vw, 1.75rem);
  font-weight: 400;
  line-height: 1.3;
  margin-bottom: var(--space-sm);
}

.hero-lead {
  font-size: 1.15rem;
  color: var(--color-ink-muted);
  max-width: 32rem;
  margin-bottom: var(--space-md);
}

.hero-brand,
.hero-legal,
.hero-title,
.hero-lead,
.hero .cta-group {
  opacity: 0;
  transform: translateY(1.25rem);
  animation: heroRise 0.9s var(--ease) forwards;
}

.hero-legal {
  animation-delay: 0.08s;
}

.hero-title {
  animation-delay: 0.16s;
}

.hero-lead {
  animation-delay: 0.28s;
}

.hero .cta-group {
  animation-delay: 0.4s;
}

@keyframes heroRise {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ——— Sections ——— */
.section {
  padding: var(--space-2xl) 0;
}

.section-alt {
  background: var(--color-bg-alt);
}

.section-header {
  max-width: 36rem;
  margin-bottom: var(--space-lg);
}

.section-label {
  display: block;
  font-size: 0.8rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-ink-muted);
  margin-bottom: var(--space-xs);
}

.section-title {
  font-size: clamp(1.85rem, 4vw, 2.5rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.015em;
  margin-bottom: var(--space-sm);
}

.section-lead {
  color: var(--color-ink-muted);
  font-size: 1.1rem;
}

.section-lead a {
  text-decoration: underline;
  text-underline-offset: 0.15em;
}

.reveal {
  opacity: 0;
  transform: translateY(1.5rem);
  transition:
    opacity 0.7s var(--ease),
    transform 0.7s var(--ease);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 {
  transition-delay: 0.1s;
}

.reveal-delay-2 {
  transition-delay: 0.2s;
}

/* ——— Opportunity ——— */
.opportunity-header {
  max-width: 48rem;
  margin-bottom: var(--space-xl);
}

.opportunity-hero-stat {
  display: grid;
  gap: var(--space-sm);
  margin: var(--space-sm) 0 var(--space-md);
  align-items: end;
}

@media (min-width: 720px) {
  .opportunity-hero-stat {
    grid-template-columns: auto 1fr;
    gap: var(--space-lg);
  }
}

.opportunity-stat-figure {
  font-size: clamp(5rem, 14vw, 8.5rem);
  font-weight: 700;
  line-height: 0.85;
  letter-spacing: -0.05em;
  color: var(--color-ink);
}

.opportunity-stat-copy {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  max-width: 22rem;
  padding-bottom: 0.35rem;
}

.opportunity-stat-headline {
  display: block;
  font-size: clamp(1.45rem, 3vw, 1.85rem);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.015em;
}

.opportunity-stat-source,
.opportunity-point-source {
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-ink-muted);
}

.opportunity-lead {
  max-width: 38rem;
}

.opportunity-grid {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--color-line);
}

@media (min-width: 720px) {
  .opportunity-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.opportunity-point {
  padding: var(--space-md) 0;
  border-bottom: 1px solid var(--color-line);
}

@media (min-width: 720px) {
  .opportunity-point {
    padding: var(--space-lg) var(--space-md) var(--space-lg) 0;
    border-right: 1px solid var(--color-line);
  }

  .opportunity-point:nth-child(2n) {
    border-right: none;
    padding-right: 0;
    padding-left: var(--space-md);
  }

  .opportunity-point:nth-child(2n + 1) {
    padding-left: 0;
  }
}

.opportunity-point-figure {
  font-size: clamp(2.25rem, 5vw, 3.25rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1;
  margin-bottom: var(--space-sm);
}

.opportunity-point-vs {
  font-size: 0.45em;
  font-weight: 400;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-ink-muted);
  vertical-align: middle;
  margin: 0 0.15em;
}

.opportunity-point-body {
  color: var(--color-ink-muted);
  font-size: 1.05rem;
  line-height: 1.55;
  margin-bottom: var(--space-xs);
  max-width: 28rem;
}

.opportunity-point-source {
  margin-top: 0.35rem;
}

/* ——— Audit blocks ——— */
.audit-grid {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--color-line);
}

@media (min-width: 720px) {
  .audit-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1000px) {
  .audit-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.audit-block {
  padding: var(--space-md) 0;
  border-bottom: 1px solid var(--color-line);
}

@media (min-width: 720px) {
  .audit-block {
    padding: var(--space-md);
    border-right: 1px solid var(--color-line);
  }

  .audit-block:nth-child(2n) {
    border-right: none;
    padding-right: 0;
  }

  .audit-block:nth-child(2n + 1) {
    padding-left: 0;
  }
}

@media (min-width: 1000px) {
  .audit-block {
    padding: var(--space-md);
    border-right: 1px solid var(--color-line);
  }

  .audit-block:nth-child(2n) {
    border-right: 1px solid var(--color-line);
    padding-right: var(--space-md);
  }

  .audit-block:nth-child(2n + 1) {
    padding-left: var(--space-md);
  }

  .audit-block:nth-child(3n + 1) {
    padding-left: 0;
  }

  .audit-block:nth-child(3n) {
    border-right: none;
    padding-right: 0;
  }
}

.audit-block-title {
  font-size: 1.15rem;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 0.65rem;
}

.audit-block-body {
  color: var(--color-ink-muted);
  font-size: 1.05rem;
  line-height: 1.6;
}

/* ——— Pricing ——— */
.pricing-block {
  max-width: 36rem;
}

.price {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 0.5rem 0.75rem;
  margin-bottom: var(--space-sm);
}

.price-amount {
  font-size: clamp(3rem, 8vw, 4.5rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1;
}

.price-meta {
  color: var(--color-ink-muted);
  font-size: 1.05rem;
}

.pricing-block > .section-lead {
  margin-bottom: var(--space-md);
}

.pricing-follow-on {
  color: var(--color-ink-muted);
  font-size: 1.05rem;
  margin-bottom: var(--space-lg);
  padding-top: var(--space-md);
  border-top: 1px solid var(--color-line);
}

/* ——— ROI calculator ——— */
.roi-layout {
  display: grid;
  gap: var(--space-xl);
}

@media (min-width: 900px) {
  .roi-layout {
    grid-template-columns: minmax(16rem, 22rem) 1fr;
    align-items: start;
  }
}

.roi-form {
  display: grid;
  gap: var(--space-md);
}

.roi-inputs {
  display: grid;
  gap: var(--space-md);
}

.roi-formula {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.35rem 0.5rem;
  padding: var(--space-md) 0 0;
  border-top: 1px solid var(--color-line);
  font-size: 1.05rem;
  color: var(--color-ink-muted);
}

.roi-formula-eq {
  color: var(--color-ink);
}

.roi-formula strong {
  font-size: 1.5rem;
  color: var(--color-ink);
  letter-spacing: -0.02em;
}

.roi-formula-unit {
  width: 100%;
  font-size: 0.95rem;
}

.roi-benchmark-note {
  font-size: 0.9rem;
  color: var(--color-ink-muted);
  line-height: 1.55;
  opacity: 0.9;
}

.roi-results {
  display: grid;
  gap: var(--space-lg);
}

.roi-scenarios {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--color-line);
}

@media (min-width: 640px) {
  .roi-scenarios {
    grid-template-columns: repeat(3, 1fr);
  }
}

.roi-scenario {
  padding: var(--space-md) 0;
  border-bottom: 1px solid var(--color-line);
}

@media (min-width: 640px) {
  .roi-scenario {
    padding: var(--space-md) var(--space-md) var(--space-md) 0;
    border-bottom: none;
    border-right: 1px solid var(--color-line);
  }

  .roi-scenario:last-child {
    border-right: none;
    padding-right: 0;
  }

  .roi-scenario:not(:first-child) {
    padding-left: var(--space-md);
  }
}

.roi-scenario-label {
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-ink-muted);
  font-weight: 400;
  margin-bottom: 0.35rem;
}

.roi-scenario.is-expected .roi-scenario-label {
  color: var(--color-ink);
}

.roi-scenario-pct {
  font-size: 0.95rem;
  color: var(--color-ink-muted);
  margin-bottom: 0.35rem;
}

.roi-scenario-amount {
  font-size: clamp(1.75rem, 4vw, 2.35rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 0.25rem;
}

.roi-scenario-meta {
  font-size: 0.9rem;
  color: var(--color-ink-muted);
}

.roi-chart-wrap {
  padding-top: var(--space-sm);
}

.roi-chart-title {
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-ink-muted);
  margin-bottom: var(--space-sm);
}

.roi-chart {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.75rem;
  align-items: end;
  min-height: 14rem;
  padding: var(--space-md) 0 0;
  border-top: 1px solid var(--color-line);
}

.roi-bar-group {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
  min-width: 0;
}

.roi-bar-track {
  width: 100%;
  max-width: 3.5rem;
  height: 11rem;
  display: flex;
  align-items: flex-end;
  background: rgba(10, 10, 10, 0.04);
  border: 1px solid var(--color-line);
}

.roi-bar {
  width: 100%;
  min-height: 2px;
  transition: height 0.35s var(--ease);
}

.roi-bar-cost {
  background: var(--color-ink);
}

.roi-bar-pessimistic {
  background: rgba(10, 10, 10, 0.28);
}

.roi-bar-expected {
  background: rgba(10, 10, 10, 0.55);
}

.roi-bar-optimistic {
  background: rgba(10, 10, 10, 0.78);
}

.roi-bar-label {
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-ink-muted);
  text-align: center;
  line-height: 1.3;
}

.roi-bar-value {
  font-size: 0.85rem;
  font-weight: 700;
  text-align: center;
  letter-spacing: -0.01em;
}

.roi-payback {
  font-size: 1.05rem;
  color: var(--color-ink-muted);
  max-width: 36rem;
  padding-top: var(--space-sm);
  border-top: 1px solid var(--color-line);
}

.roi-payback strong {
  color: var(--color-ink);
}

/* ——— About ——— */
.about-layout {
  display: grid;
  gap: var(--space-lg);
  align-items: start;
}

@media (min-width: 800px) {
  .about-layout {
    grid-template-columns: minmax(14rem, 22rem) 1fr;
    gap: var(--space-xl);
  }
}

.about-photo {
  position: relative;
  aspect-ratio: 4 / 5;
  width: 100%;
  max-width: 22rem;
  background: var(--color-bg-alt);
  overflow: hidden;
}

.about-photo-placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: var(--space-md);
  text-align: center;
  color: var(--color-ink-muted);
  border: 1px dashed var(--color-line);
  font-size: 1rem;
}

.about-photo-placeholder[hidden] {
  display: none;
}

.about-photo-hint {
  font-size: 0.85rem;
  opacity: 0.7;
}

.about-photo-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.about-photo-img[hidden] {
  display: none;
}

.about-main {
  display: grid;
  gap: var(--space-lg);
  align-items: start;
}

@media (min-width: 900px) {
  .about-main {
    grid-template-columns: minmax(0, 1fr) minmax(9rem, 11rem);
    gap: var(--space-xl);
  }
}

.about-copy {
  max-width: 38rem;
}

.about-copy p + p {
  margin-top: var(--space-md);
}

.about-copy p {
  color: var(--color-ink-muted);
  font-size: 1.15rem;
}

.about-cred {
  padding-top: 0.15rem;
}

.about-cred-label {
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-ink-muted);
  margin-bottom: var(--space-sm);
}

.about-cred-logos {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-md);
}

.cred-logo {
  display: block;
  width: auto;
  height: auto;
  max-width: 100%;
  object-fit: contain;
  opacity: 0.92;
}

.cred-logo-uva {
  width: 5.5rem;
  height: auto;
}

.cred-logo-bah {
  width: 9.5rem;
  height: auto;
}

@media (max-width: 899px) {
  .about-cred-logos {
    flex-direction: row;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-md) var(--space-lg);
  }

  .cred-logo-uva {
    width: 4.5rem;
  }

  .cred-logo-bah {
    width: 8.5rem;
  }
}

/* ——— Contact form ——— */
.form-success {
  padding: var(--space-sm) var(--space-md);
  margin-bottom: var(--space-md);
  background: var(--color-bg);
  border: 1px solid var(--color-ink);
  outline: none;
}

.form-success[hidden] {
  display: none;
}

.contact-layout {
  display: grid;
  gap: var(--space-lg);
}

@media (min-width: 800px) {
  .contact-layout {
    grid-template-columns: 1fr 1.2fr;
    gap: var(--space-xl);
    align-items: start;
  }
}

.contact-form {
  display: grid;
  gap: var(--space-md);
}

.field {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.field label {
  font-size: 0.9rem;
  letter-spacing: 0.02em;
}

.field input,
.field select,
.field textarea {
  font-family: inherit;
  font-size: 1rem;
  padding: 0.75rem 0.85rem;
  border: 1px solid var(--color-line);
  background: var(--color-bg-alt);
  color: var(--color-ink);
  border-radius: 0;
  transition: border-color 0.2s var(--ease);
}

.section-alt .field input,
.section-alt .field select,
.section-alt .field textarea {
  background: var(--color-bg);
}

.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--color-ink);
}

.field textarea {
  min-height: 8rem;
  resize: vertical;
}

.honeypot {
  position: absolute;
  left: -9999px;
  height: 0;
  overflow: hidden;
}

/* ——— Calendly ——— */
.calendly-section .section-header {
  margin-bottom: var(--space-md);
}

.calendly-embed {
  min-width: 320px;
  height: 700px;
  background: var(--color-bg-alt);
}

/* ——— Footer ——— */
.site-footer {
  padding: var(--space-lg) 0;
  border-top: 1px solid var(--color-line);
  background: var(--color-bg);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--space-sm);
  font-size: 0.95rem;
  color: var(--color-ink-muted);
}

.footer-brand {
  font-weight: 700;
  color: var(--color-ink);
  text-decoration: none;
}

/* ——— Mobile nav ——— */
@media (max-width: 768px) {
  .nav-toggle {
    display: block;
  }

  .nav-links {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: var(--space-sm);
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-line);
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition:
      transform 0.35s var(--ease),
      opacity 0.35s var(--ease);
  }

  .nav-links.is-open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .nav-links a {
    padding: 0.85rem var(--space-sm);
    border-bottom: 1px solid var(--color-line);
  }

  .nav-links .btn {
    margin-top: var(--space-sm);
    width: 100%;
  }

  .hero {
    align-items: center;
    padding-top: calc(var(--nav-height) + 3rem);
  }

  .calendly-embed {
    height: 620px;
  }
}