/* ============================================================
   rahulm.in — design system
   Palette: paper / ink (workwear navy-black) / eucalyptus green
   Type: Newsreader (display) + Public Sans (body)
   ============================================================ */

:root {
  --paper: #FBFAF7;
  --paper-tint: #EFF3F0;
  --ink: #1B2A33;
  --slate: #4A5C68;
  --slate-soft: #6E7E88;
  --green: #2F5D50;
  --green-deep: #24473D;
  --green-wash: #E4ECE8;
  --line: #E2E4DF;
  --line-strong: #C9CEC7;
  --white: #FFFFFF;

  --font-display: "Newsreader", Georgia, "Times New Roman", serif;
  --font-body: "Public Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

  --radius: 10px;
  --radius-sm: 6px;
  --shadow-soft: 0 1px 2px rgba(27, 42, 51, 0.05), 0 8px 28px rgba(27, 42, 51, 0.07);
  --shadow-lift: 0 2px 4px rgba(27, 42, 51, 0.06), 0 14px 40px rgba(27, 42, 51, 0.11);

  --measure: 62ch;
  --gutter: clamp(1.25rem, 5vw, 2.5rem);
  --section-gap: clamp(4.5rem, 10vw, 8rem);
}

/* ---------- reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
img, svg { display: block; max-width: 100%; }
h1, h2, h3, h4, p, ul, ol, figure { margin: 0; }
a { color: inherit; }
button { font: inherit; }

::selection { background: var(--green); color: var(--white); }

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

/* ---------- layout primitives ---------- */
.wrap {
  width: min(1120px, 100% - 2 * var(--gutter));
  margin-inline: auto;
}
.section { padding-block: var(--section-gap); }
.section--tint {
  background: var(--paper-tint);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

/* Editorial split: eyebrow/label column left, content right */
.split { display: grid; gap: 2rem; }
@media (min-width: 860px) {
  .split { grid-template-columns: minmax(0, 4fr) minmax(0, 7fr); gap: clamp(2.5rem, 6vw, 5.5rem); }
  .split__label { position: sticky; top: 6.5rem; align-self: start; }
}

/* ---------- typography ---------- */
.eyebrow {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--green);
  margin-bottom: 1.1rem;
}
.eyebrow::before {
  content: "";
  width: 1.75rem;
  height: 2px;
  background: var(--green);
  border-radius: 1px;
  flex: none;
}

h1, .h1 {
  font-family: var(--font-display);
  font-optical-sizing: auto;
  font-weight: 500;
  font-size: clamp(2.35rem, 5.6vw, 3.9rem);
  line-height: 1.08;
  letter-spacing: -0.015em;
  text-wrap: balance;
}
h2, .h2 {
  font-family: var(--font-display);
  font-optical-sizing: auto;
  font-weight: 500;
  font-size: clamp(1.75rem, 3.4vw, 2.5rem);
  line-height: 1.14;
  letter-spacing: -0.01em;
  text-wrap: balance;
}
h3, .h3 {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(1.3rem, 2.2vw, 1.6rem);
  line-height: 1.25;
}
.em {
  font-style: italic;
  color: var(--green);
  font-weight: 500;
}
.lede {
  font-size: clamp(1.1rem, 1.8vw, 1.25rem);
  line-height: 1.6;
  color: var(--slate);
  max-width: var(--measure);
}
.prose { max-width: var(--measure); color: var(--ink); }
.prose p { margin-bottom: 1.15em; }
.prose p:last-child { margin-bottom: 0; }
.prose a { color: var(--green); text-decoration-thickness: 1px; text-underline-offset: 3px; }
.prose a:hover { color: var(--green-deep); }
.muted { color: var(--slate); }
.small { font-size: 0.9rem; }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.85rem 1.5rem;
  border-radius: 99px;
  border: 1px solid transparent;
  font-weight: 600;
  font-size: 0.97rem;
  text-decoration: none;
  cursor: pointer;
  transition: background-color 0.18s ease, border-color 0.18s ease, transform 0.18s ease, box-shadow 0.18s ease;
}
.btn--primary {
  background: var(--green);
  color: var(--white);
  box-shadow: 0 1px 2px rgba(36, 71, 61, 0.25);
}
.btn--primary:hover { background: var(--green-deep); transform: translateY(-1px); box-shadow: 0 6px 18px rgba(36, 71, 61, 0.25); }
.btn--primary:active { transform: translateY(0); }
.btn--ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--line-strong);
}
.btn--ghost:hover { border-color: var(--ink); }
.btn .arrow { transition: transform 0.18s ease; }
.btn:hover .arrow { transform: translateX(3px); }

/* ---------- header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(251, 250, 247, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-block: 0.9rem;
}
.wordmark {
  text-decoration: none;
  line-height: 1.15;
}
.wordmark__name {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.15rem;
  letter-spacing: -0.01em;
  display: block;
}
.wordmark__tag {
  display: block;
  font-size: 0.66rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--green);
}
.site-nav { display: none; }
@media (min-width: 860px) {
  .site-nav { display: flex; align-items: center; gap: 1.9rem; }
  .site-nav a {
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--slate);
    padding-block: 0.3rem;
    border-bottom: 2px solid transparent;
    transition: color 0.15s ease, border-color 0.15s ease;
  }
  .site-nav a:hover { color: var(--ink); }
  .site-nav a[aria-current="page"] { color: var(--ink); border-color: var(--green); }
  .site-nav .btn { padding: 0.6rem 1.15rem; font-size: 0.9rem; }
}
.nav-toggle {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  background: none;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  cursor: pointer;
}
.nav-toggle span { height: 2px; background: var(--ink); border-radius: 2px; transition: transform 0.2s ease, opacity 0.2s ease; }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
@media (min-width: 860px) { .nav-toggle { display: none; } }

.mobile-nav {
  display: none;
  border-top: 1px solid var(--line);
  background: var(--paper);
}
.mobile-nav.is-open { display: block; }
.mobile-nav ul { list-style: none; margin: 0; padding: 0.5rem 0 1.1rem; }
.mobile-nav a {
  display: block;
  padding: 0.8rem var(--gutter);
  text-decoration: none;
  font-weight: 500;
  font-size: 1.05rem;
}
.mobile-nav a[aria-current="page"] { color: var(--green); }
.mobile-nav .btn { margin: 0.6rem var(--gutter) 0; }
@media (min-width: 860px) { .mobile-nav { display: none !important; } }

/* ---------- hero ---------- */
.hero { padding-block: clamp(3.5rem, 8vw, 6.5rem) var(--section-gap); }
.hero__grid { display: grid; gap: 3rem; align-items: center; }
@media (min-width: 960px) {
  .hero__grid { grid-template-columns: minmax(0, 11fr) minmax(0, 9fr); gap: clamp(3rem, 6vw, 5.5rem); }
}
.hero h1 { margin-bottom: 1.35rem; }
.hero .lede { margin-bottom: 2rem; }
.hero__cta { display: flex; flex-wrap: wrap; align-items: center; gap: 1rem; margin-bottom: 1.15rem; }
.hero__trust {
  font-size: 0.88rem;
  color: var(--slate-soft);
  max-width: 46ch;
  line-height: 1.55;
}

/* Signature: the answer artifact */
.answer-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lift);
  padding: 1.5rem 1.5rem 1.65rem;
  max-width: 30rem;
}
.answer-card__engines {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-bottom: 1.35rem;
}
.answer-card__engines span {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--slate);
  background: var(--paper-tint);
  border: 1px solid var(--line);
  border-radius: 99px;
  padding: 0.3rem 0.7rem;
}
.answer-card__q {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 1.2rem;
  color: var(--ink);
  padding-bottom: 1.1rem;
  margin-bottom: 1.1rem;
  border-bottom: 1px solid var(--line);
}
.answer-card__a { font-size: 0.98rem; color: var(--slate); line-height: 1.6; }
.answer-card__a .biz {
  color: var(--green-deep);
  font-weight: 700;
  border-bottom: 2px solid var(--green);
  padding-bottom: 1px;
  white-space: nowrap;
}
.caret {
  display: inline-block;
  width: 2px;
  height: 1em;
  background: var(--green);
  vertical-align: text-bottom;
  margin-left: 3px;
  animation: blink 1.1s steps(1) infinite;
}
.answer-card__meta {
  margin-top: 1.2rem;
  font-size: 0.78rem;
  color: var(--slate-soft);
}
@keyframes blink { 50% { opacity: 0; } }

/* ---------- shift (problem/solution) ---------- */
.shift-terms { display: grid; gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; margin-top: 2.25rem; }
@media (min-width: 700px) { .shift-terms { grid-template-columns: repeat(3, 1fr); } }
.shift-terms > div { background: var(--white); padding: 1.4rem 1.4rem 1.5rem; }
.shift-terms dt {
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.02em;
  margin-bottom: 0.4rem;
  display: flex;
  align-items: baseline;
  gap: 0.55rem;
}
.shift-terms dt .abbr { color: var(--green); font-size: 1.05rem; }
.shift-terms dd { margin: 0; font-size: 0.94rem; color: var(--slate); line-height: 1.55; }

/* ---------- services ledger ---------- */
.ledger { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line-strong); }
.ledger__row { border-bottom: 1px solid var(--line-strong); }
.ledger__link {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: baseline;
  gap: 0.9rem 1.4rem;
  padding: 1.4rem 0.25rem;
  text-decoration: none;
  transition: background-color 0.16s ease, padding 0.16s ease;
}
.ledger__link:hover { background: var(--green-wash); padding-inline: 0.9rem; }
.ledger__tag {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--green);
  min-width: 5.5rem;
}
.ledger__body h3 { font-size: 1.25rem; margin-bottom: 0.25rem; }
.ledger__body p { font-size: 0.95rem; color: var(--slate); max-width: 52ch; }
.ledger__arrow {
  color: var(--slate-soft);
  font-size: 1.2rem;
  transition: transform 0.16s ease, color 0.16s ease;
  align-self: center;
}
.ledger__link:hover .ledger__arrow { transform: translateX(4px); color: var(--green); }
@media (max-width: 600px) {
  .ledger__link { grid-template-columns: 1fr auto; }
  .ledger__tag { grid-column: 1 / -1; min-width: 0; }
}
.section-footnote { margin-top: 1.5rem; font-size: 0.9rem; color: var(--slate-soft); }

/* ---------- credibility ---------- */
.cred-figures {
  display: flex;
  gap: 2.5rem;
  margin-top: 2rem;
  flex-wrap: wrap;
}
.cred-figures div { border-left: 2px solid var(--green); padding-left: 1rem; }
.cred-figures strong {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 2rem;
  line-height: 1.1;
  display: block;
}
.cred-figures span { font-size: 0.85rem; color: var(--slate); }

/* ---------- process ---------- */
.process { list-style: none; margin: 0; padding: 0; counter-reset: step; display: grid; gap: 1rem; }
@media (min-width: 860px) { .process { grid-template-columns: repeat(4, 1fr); gap: 1.25rem; } }
.process li {
  counter-increment: step;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.5rem 1.4rem 1.6rem;
  box-shadow: var(--shadow-soft);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}
.process li:hover { transform: translateY(-4px); box-shadow: var(--shadow-lift); border-color: var(--line-strong); }
.process li::before {
  content: counter(step, decimal-leading-zero);
  font-family: var(--font-display);
  font-style: italic;
  font-size: 1.05rem;
  color: var(--green);
  display: block;
  margin-bottom: 0.9rem;
}
.process h3 { font-family: var(--font-body); font-weight: 700; font-size: 1.05rem; margin-bottom: 0.45rem; }
.process p { font-size: 0.93rem; color: var(--slate); line-height: 1.55; }

/* ---------- blog ---------- */
.post-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 1.75rem; }
.post-item { border-top: 1px solid var(--line-strong); padding-top: 1.5rem; }
.post-item a { text-decoration: none; display: block; }
.post-item .kicker {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--green);
  margin-bottom: 0.5rem;
}
.post-item h3 { margin-bottom: 0.45rem; transition: color 0.15s ease; }
.post-item a:hover h3 { color: var(--green-deep); }
.post-item p { color: var(--slate); font-size: 0.96rem; max-width: 60ch; }
.post-item .readmore {
  display: inline-block;
  margin-top: 0.7rem;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--green);
}

/* article */
.article-header { padding-block: clamp(3rem, 7vw, 5rem) 2.5rem; border-bottom: 1px solid var(--line); }
.article-header h1 { max-width: 22ch; margin-bottom: 1.1rem; }
.article-meta { font-size: 0.88rem; color: var(--slate-soft); display: flex; flex-wrap: wrap; gap: 0.4rem 1.1rem; }
.article-body { padding-block: 3rem var(--section-gap); }
.article-body .prose { margin-inline: auto; }
.article-body h2 { margin: 2.2em 0 0.7em; font-size: clamp(1.4rem, 2.4vw, 1.75rem); }
.article-body h3 { margin: 1.8em 0 0.6em; }
.article-body ul, .article-body ol { padding-left: 1.3rem; margin-bottom: 1.15em; }
.article-body li { margin-bottom: 0.4em; }

/* ---------- FAQ ---------- */
.faq { border-top: 1px solid var(--line-strong); }
.faq details { border-bottom: 1px solid var(--line-strong); }
.faq summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 1.25rem 0.25rem;
  font-weight: 600;
  font-size: 1.05rem;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+";
  font-family: var(--font-display);
  font-size: 1.5rem;
  color: var(--green);
  transition: transform 0.2s ease;
  flex: none;
}
.faq details[open] summary::after { transform: rotate(45deg); }
.faq .faq__a { padding: 0 0.25rem 1.4rem; color: var(--slate); max-width: 62ch; }

/* ---------- contact ---------- */
.contact-grid { display: grid; gap: 3rem; }
@media (min-width: 900px) { .contact-grid { grid-template-columns: minmax(0, 5fr) minmax(0, 6fr); gap: 5rem; } }
.form { display: grid; gap: 1.15rem; }
.field label { display: block; font-size: 0.85rem; font-weight: 600; margin-bottom: 0.4rem; }
.field input, .field textarea {
  width: 100%;
  font: inherit;
  color: var(--ink);
  background: var(--white);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  padding: 0.75rem 0.9rem;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
.field input:focus, .field textarea:focus {
  outline: none;
  border-color: var(--green);
  box-shadow: 0 0 0 3px rgba(47, 93, 80, 0.15);
}
.field .optional { font-weight: 400; color: var(--slate-soft); }
.form .btn { justify-self: start; margin-top: 0.4rem; }
.trust-line {
  margin-top: 1.5rem;
  font-size: 0.9rem;
  color: var(--slate);
  font-style: italic;
  border-left: 2px solid var(--green);
  padding-left: 1rem;
  max-width: 48ch;
}

/* ---------- final CTA band ---------- */
.cta-band {
  background: var(--ink);
  color: var(--paper);
  border-radius: var(--radius);
  padding: clamp(2.5rem, 6vw, 4.5rem) clamp(1.5rem, 5vw, 4rem);
  display: grid;
  gap: 1.75rem;
}
@media (min-width: 860px) {
  .cta-band { grid-template-columns: 1fr auto; align-items: center; }
}
.cta-band h2 { color: var(--white); margin-bottom: 0.7rem; }
.cta-band p { color: #B9C4CB; max-width: 52ch; }
.cta-band .btn--primary { background: var(--white); color: var(--ink); box-shadow: none; }
.cta-band .btn--primary:hover { background: var(--green-wash); }

/* ---------- footer ---------- */
.site-footer {
  border-top: 1px solid var(--line);
  padding-block: 3rem 2.5rem;
  margin-top: var(--section-gap);
}
.site-footer__grid { display: grid; gap: 2rem; }
@media (min-width: 700px) { .site-footer__grid { grid-template-columns: 2fr 1fr 1fr; } }
.site-footer .wordmark__name { font-size: 1.05rem; }
.site-footer p { font-size: 0.88rem; color: var(--slate); max-width: 38ch; margin-top: 0.7rem; }
.site-footer h4 {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--slate-soft);
  margin-bottom: 0.8rem;
}
.site-footer ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.45rem; }
.site-footer ul a { text-decoration: none; font-size: 0.93rem; color: var(--slate); }
.site-footer ul a:hover { color: var(--green-deep); }
.site-footer__bottom {
  margin-top: 2.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--line);
  font-size: 0.8rem;
  color: var(--slate-soft);
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
  justify-content: space-between;
}

/* ---------- page headers (inner pages) ---------- */
.page-header { padding-block: clamp(3rem, 7vw, 5.5rem) clamp(2rem, 4vw, 3rem); }
.page-header h1 { max-width: 20ch; margin-bottom: 1rem; }
.page-header .lede { max-width: 58ch; }

/* ---------- service detail rows ---------- */
.svc { display: grid; gap: 1.25rem; padding-block: clamp(2.25rem, 5vw, 3.5rem); border-top: 1px solid var(--line-strong); }
@media (min-width: 860px) { .svc { grid-template-columns: minmax(0, 4fr) minmax(0, 7fr); gap: 4rem; } }
.svc:first-of-type { border-top: none; padding-top: 0; }
.svc__label .tag {
  display: inline-block;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--green);
  background: var(--green-wash);
  border-radius: 99px;
  padding: 0.32rem 0.75rem;
  margin-bottom: 0.85rem;
}
.svc__label h2 { font-size: clamp(1.45rem, 2.6vw, 1.9rem); }
.svc__body { color: var(--slate); max-width: 60ch; }
.svc__body strong { color: var(--ink); }

/* ---------- reveal on scroll (progressive enhancement only) ---------- */
html.js .reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}
html.js .reveal.is-visible { opacity: 1; transform: none; }

@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; }
  html.js .reveal { opacity: 1; transform: none; }
}