/* ============================================================
   Homegrown AI Consulting — styles.css
   Plain CSS, no build step. Design tokens up top; everything
   else reads from them.
   ============================================================ */

/* ---------- Tokens ---------- */
:root {
  /* Palette: warm neutrals + deep olive-forest green + near-black ink */
  --cream: #faf6ef;
  --oat: #f1ead9;
  --sand: #e6dcc3;
  --green: #3a5a40;
  --green-deep: #2c4632;
  --green-soft: #5a7a5e;
  --ink: #1e1e1b;
  --ink-soft: #4a4a44;
  --white: #fffdf8;

  /* Type */
  --serif: "Charter", "Bitstream Charter", "Sitka Text", Cambria, Georgia, serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;

  /* Rhythm */
  --measure: 65ch;
  --radius: 10px;
  --shadow: 0 2px 6px rgba(30, 30, 27, 0.06), 0 12px 32px rgba(30, 30, 27, 0.08);
  --shadow-lift: 0 4px 10px rgba(30, 30, 27, 0.08), 0 18px 44px rgba(30, 30, 27, 0.12);
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

/* ---------- Reset & base ---------- */
*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--sans);
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--ink);
  background: var(--cream);
  -webkit-font-smoothing: antialiased;
}

img, svg { max-width: 100%; height: auto; }

h1, h2, h3, h4 {
  font-family: var(--serif);
  line-height: 1.2;
  color: var(--ink);
  margin: 0 0 0.6em;
  letter-spacing: -0.01em;
}

h1 { font-size: clamp(2.1rem, 5.5vw, 3.4rem); }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.2rem); }
h3 { font-size: clamp(1.2rem, 2.5vw, 1.45rem); }

p, ul, ol { margin: 0 0 1.1em; max-width: var(--measure); }

a { color: var(--green); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--green-deep); }

strong { color: var(--ink); }

::selection { background: var(--sand); }

:focus-visible {
  outline: 3px solid var(--green);
  outline-offset: 3px;
  border-radius: 2px;
}

/* Skip link */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--green);
  color: var(--white);
  padding: 0.6rem 1rem;
  z-index: 100;
  border-radius: 0 0 var(--radius) 0;
}
.skip-link:focus { left: 0; color: var(--white); }

/* ---------- Layout helpers ---------- */
.wrap {
  width: min(100% - 2.5rem, 68rem);
  margin-inline: auto;
}

.wrap--narrow { width: min(100% - 2.5rem, 46rem); }

section { padding-block: clamp(3rem, 8vw, 5.5rem); }

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

.kicker {
  display: block;
  font-family: var(--sans);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--green);
  margin-bottom: 0.75rem;
}

.lede {
  font-size: 1.2rem;
  color: var(--ink-soft);
}

/* ---------- Header / nav ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(250, 246, 239, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--sand);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-block: 0.9rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--serif);
  font-size: 1.18rem;
  font-weight: 700;
  color: var(--ink);
  text-decoration: none;
}
.brand:hover { color: var(--green-deep); }

.brand svg { width: 30px; height: 30px; flex-shrink: 0; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.6rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a:not(.btn) {
  position: relative;
  color: var(--ink);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.98rem;
  padding-block: 0.25rem;
}

/* underline sweep */
.nav-links a:not(.btn)::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  background: var(--green);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.35s var(--ease);
}
.nav-links a:not(.btn):hover::after,
.nav-links a:not(.btn)[aria-current="page"]::after {
  transform: scaleX(1);
  transform-origin: left;
}
.nav-links a[aria-current="page"] { color: var(--green-deep); }

/* Hamburger (mobile) */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  z-index: 60;
}
.nav-toggle .bar {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--ink);
  margin: 5px 0;
  transition: transform 0.3s var(--ease), opacity 0.3s var(--ease);
}

@media (max-width: 760px) {
  .nav-toggle { display: block; }

  .nav-links {
    position: fixed;
    inset: 0;
    flex-direction: column;
    justify-content: center;
    gap: 2rem;
    background: var(--cream);
    transform: translateY(-100%);
    transition: transform 0.4s var(--ease);
    z-index: 55;
  }
  .nav-links a:not(.btn) { font-size: 1.4rem; }

  .nav.open .nav-links { transform: translateY(0); }
  .nav.open .bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav.open .bar:nth-child(2) { opacity: 0; }
  .nav.open .bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-block;
  font-family: var(--sans);
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  border-radius: 999px;
  padding: 0.75rem 1.6rem;
  transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease),
    background-color 0.25s var(--ease), color 0.25s var(--ease);
  cursor: pointer;
  border: 2px solid var(--green);
}

.btn-primary {
  background: var(--green);
  color: var(--white);
}
.btn-primary:hover {
  background: var(--green-deep);
  border-color: var(--green-deep);
  color: var(--white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lift);
}

.btn-ghost {
  background: transparent;
  color: var(--green);
}
.btn-ghost:hover {
  background: var(--green);
  color: var(--white);
  transform: translateY(-2px);
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(3.5rem, 9vw, 7rem);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
}

@media (max-width: 860px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-art { max-width: 340px; margin-inline: auto; }
}

.hero h1 { margin-bottom: 0.5em; }

.hero .lede { font-size: 1.25rem; margin-bottom: 1.8em; }

.hero-ctas { display: flex; flex-wrap: wrap; gap: 0.9rem; }

/* Signature growth animation — SVG paths draw themselves in */
.grow-svg .sprout {
  stroke-dasharray: var(--len, 300);
  stroke-dashoffset: var(--len, 300);
  animation: grow 1.6s var(--ease) forwards;
}
.grow-svg .leaf {
  opacity: 0;
  transform-origin: var(--pivot, center);
  transform: scale(0.3) rotate(-10deg);
  animation: leaf-pop 0.7s var(--ease) forwards;
}
.grow-svg .seed {
  opacity: 0;
  animation: fade-in 0.6s ease forwards;
}

@keyframes grow { to { stroke-dashoffset: 0; } }
@keyframes leaf-pop { to { opacity: 1; transform: scale(1) rotate(0deg); } }
@keyframes fade-in { to { opacity: 1; } }

/* subtle organic backdrop blob */
.hero::before {
  content: "";
  position: absolute;
  top: -20%;
  right: -12%;
  width: 55vw;
  max-width: 700px;
  aspect-ratio: 1;
  background: radial-gradient(closest-side, var(--oat), transparent 72%);
  z-index: -1;
}

/* ---------- Cards ---------- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 17rem), 1fr));
  gap: 1.4rem;
  margin-top: 2rem;
}

.card {
  background: var(--white);
  border: 1px solid var(--sand);
  border-radius: var(--radius);
  padding: 1.8rem 1.6rem;
  box-shadow: var(--shadow);
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
  display: flex;
  flex-direction: column;
}
.card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lift); }

.card h3 { margin-top: 0.4rem; }
.card p { font-size: 0.98rem; color: var(--ink-soft); }
.card .card-cta { margin-top: auto; font-weight: 600; }

.card-icon {
  width: 44px;
  height: 44px;
  color: var(--green);
}

/* numbered step chip */
.chip {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--green-deep);
  background: var(--oat);
  border-radius: 999px;
  padding: 0.25rem 0.8rem;
}

/* ---------- Pillars / checklist ---------- */
.pillars {
  list-style: none;
  padding: 0;
  display: grid;
  gap: 1.1rem;
  max-width: none;
}
.pillars li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.9rem;
  align-items: start;
}
.pillars svg { width: 26px; height: 26px; color: var(--green); margin-top: 0.2rem; }
.pillars strong { display: block; margin-bottom: 0.15rem; }
.pillars p { margin: 0; color: var(--ink-soft); font-size: 0.98rem; }

/* ---------- Case study / story blocks ---------- */
.story {
  display: grid;
  gap: 0.5rem;
  background: var(--white);
  border: 1px solid var(--sand);
  border-left: 5px solid var(--green);
  border-radius: var(--radius);
  padding: 1.8rem 1.8rem 1.4rem;
  box-shadow: var(--shadow);
  margin-bottom: 1.6rem;
}
.story h3 { margin-bottom: 0.2rem; }
.story .story-label {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--green);
  margin: 0.6rem 0 0.1rem;
}
.story p { margin-bottom: 0.5rem; }

/* ---------- Blog ---------- */
.post-list { list-style: none; padding: 0; max-width: none; display: grid; gap: 1.3rem; }

.post-card {
  background: var(--white);
  border: 1px solid var(--sand);
  border-radius: var(--radius);
  padding: 1.5rem 1.7rem;
  box-shadow: var(--shadow);
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
}
.post-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lift); }
.post-card h3 { margin-bottom: 0.3rem; }
.post-card h3 a { color: var(--ink); text-decoration: none; }
.post-card h3 a:hover { color: var(--green-deep); }
.post-card p { margin-bottom: 0.4rem; color: var(--ink-soft); }

.post-meta {
  font-size: 0.85rem;
  color: var(--ink-soft);
  letter-spacing: 0.02em;
}

/* Article page */
.post article {
  background: transparent;
}
.post h1 { margin-bottom: 0.3em; }
.post .post-meta { display: block; margin-bottom: 2.2rem; }
.post h2 { margin-top: 2em; }
.post blockquote {
  margin: 1.6em 0;
  padding: 0.9em 1.4em;
  border-left: 4px solid var(--green);
  background: var(--oat);
  border-radius: 0 var(--radius) var(--radius) 0;
  font-family: var(--serif);
  font-size: 1.1rem;
}
.post blockquote p { margin: 0; }

.takeaway {
  background: var(--oat);
  border: 1px solid var(--sand);
  border-radius: var(--radius);
  padding: 1.3rem 1.5rem;
  margin-top: 2.5rem;
}
.takeaway h2, .takeaway h3 { margin-top: 0; font-size: 1.1rem; }
.takeaway p:last-child { margin-bottom: 0; }

/* ---------- Forms ---------- */
form { max-width: 34rem; }

.field { margin-bottom: 1.2rem; }

label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.35rem;
  font-size: 0.95rem;
}

input, textarea, select {
  width: 100%;
  font: inherit;
  color: var(--ink);
  background: var(--white);
  border: 1.5px solid var(--sand);
  border-radius: 8px;
  padding: 0.7rem 0.9rem;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
input:focus, textarea:focus, select:focus {
  outline: none;
  border-color: var(--green);
  box-shadow: 0 0 0 3px rgba(58, 90, 64, 0.18);
}

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

/* ---------- CTA band ---------- */
.cta-band {
  background: var(--green-deep);
  color: var(--cream);
  text-align: center;
}
.cta-band h2 { color: var(--white); }
.cta-band p { margin-inline: auto; color: var(--oat); }
.cta-band .btn-primary {
  background: var(--cream);
  color: var(--green-deep);
  border-color: var(--cream);
}
.cta-band .btn-primary:hover {
  background: var(--white);
  border-color: var(--white);
  color: var(--green-deep);
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--ink);
  color: var(--sand);
  padding-block: 2.5rem;
  font-size: 0.95rem;
}
.site-footer .wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  justify-content: space-between;
  align-items: center;
}
.site-footer a { color: var(--oat); }
.site-footer a:hover { color: var(--white); }
.footer-links { display: flex; flex-wrap: wrap; gap: 1.2rem; list-style: none; margin: 0; padding: 0; }

/* ---------- Scroll reveals ---------- */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
  transition-delay: var(--delay, 0s);
}
.reveal.in-view { opacity: 1; transform: none; }

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-delay: 0s !important;
    transition-duration: 0.01ms !important;
  }
  .reveal { opacity: 1; transform: none; }
  .grow-svg .sprout { stroke-dashoffset: 0; }
  .grow-svg .leaf, .grow-svg .seed { opacity: 1; transform: none; }
}