/* rudra.consulting — v1
   Warm paper, ink, burnt-sienna accent. Fraunces for display, Inter for body.
   No JavaScript, no build step. */

:root {
  --paper: #faf7f1;
  --paper-deep: #f3eee4;
  --ink: #171310;
  --ink-soft: #4c453d;
  --line: #e2dacd;
  --accent: #b1471f;
  --accent-deep: #8f3312;
  --accent-on-dark: #d4713f; /* accent tint for dark sections: 5.28:1 on --dark (AA) */
  --dark: #1c1713;
  --dark-line: #3a322b;
  --paper-on-dark: #f3ede4;
  --soft-on-dark: #c8bfb2;

  --font-display: "Fraunces", Georgia, "Times New Roman", serif;
  --font-body: "Inter", "Helvetica Neue", Arial, sans-serif;

  --container: 68rem;
  --section-pad: clamp(4rem, 9vw, 7rem);
}

/* ------------------------------------------------------------------ reset */

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

html {
  -webkit-text-size-adjust: 100%;
  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;
  text-rendering: optimizeLegibility;
}

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

h1, h2, h3 {
  font-family: var(--font-display);
  /* 550 needs the variable wght range (400..600) requested in index.html;
     the Georgia/Times fallback rounds it to 700 */
  font-weight: 550;
  line-height: 1.12;
  margin: 0;
  text-wrap: balance;
}

p {
  margin: 0;
}

p, dd {
  text-wrap: pretty;
}

::selection {
  background: var(--accent);
  color: #faf7f1;
}

a {
  color: var(--accent-deep);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  transition: color 140ms ease;
}

a:hover {
  color: var(--accent);
}

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

.proof :focus-visible,
.cta-block :focus-visible {
  outline-color: var(--paper-on-dark);
}

@media (prefers-reduced-motion: no-preference) {
  html {
    scroll-behavior: smooth;
  }
}

[id] {
  scroll-margin-top: 1.5rem;
}

/* -------------------------------------------------------------- utilities */

.container {
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 4vw, 2.5rem);
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -3rem;
  z-index: 10;
  background: var(--ink);
  color: var(--paper);
  padding: 0.5rem 1rem;
  border-radius: 0 0 6px 6px;
  text-decoration: none;
  transition: top 120ms ease;
}

.skip-link:focus-visible {
  top: 0;
  color: var(--paper);
}

/* section labels — rendered as the sections' real h2 headings */
.eyebrow {
  font-family: var(--font-body);
  font-size: 0.8125rem;
  font-weight: 600;
  line-height: 1.65;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 2rem;
}

/* ---------------------------------------------------------------- buttons */

.button {
  display: inline-block;
  font-weight: 600;
  font-size: 1rem;
  line-height: 1;
  padding: 0.95rem 1.6rem;
  border-radius: 999px;
  text-decoration: none;
  border: 1.5px solid transparent;
  transition: background-color 140ms ease, color 140ms ease, border-color 140ms ease;
}

.button-solid {
  background: var(--accent);
  color: #fff;
}

.button-solid:hover {
  background: var(--accent-deep);
  color: #fff;
}

.button:active {
  transform: translateY(1px);
}

.button-solid:active {
  background: var(--accent-deep);
}

.button-ghost:active {
  background: var(--ink);
  color: var(--paper);
}

.button-ghost {
  border-color: var(--ink);
  color: var(--ink);
}

.button-ghost:hover {
  background: var(--ink);
  color: var(--paper);
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.875rem;
  align-items: center;
}

/* ----------------------------------------------------------------- header */

.site-header {
  border-bottom: 1px solid var(--line);
  background: var(--paper);
}

.header-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem 1.5rem;
  padding-block: 1.1rem;
}

.brand {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.35rem;
  color: var(--ink);
  text-decoration: none;
  letter-spacing: 0.01em;
}

.brand:hover {
  color: var(--ink);
}

.brand span {
  color: var(--accent);
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.25rem 1.5rem;
  font-size: 0.9375rem;
  font-weight: 500;
}

.site-nav a {
  color: var(--ink-soft);
  text-decoration: none;
  /* 44px hit area; negative margins keep the header height unchanged */
  padding: 0.625rem 0.5rem;
  margin: -0.375rem -0.5rem;
}

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

.site-nav .nav-cta {
  color: var(--accent-deep);
  font-weight: 600;
}

.site-nav .nav-cta:hover {
  color: var(--accent);
}

/* ------------------------------------------------------------------- hero */

.hero {
  padding-block: clamp(5rem, 12vw, 9rem) var(--section-pad);
}

.hero h1 {
  font-size: clamp(2.75rem, 7vw, 4.75rem);
  letter-spacing: -0.015em;
  max-width: 18ch;
}

.hero-sub {
  max-width: 42rem;
  margin-block: 2rem 2.5rem;
  font-size: clamp(1.125rem, 1.8vw, 1.3125rem);
  line-height: 1.55;
  color: var(--ink-soft);
}

/* ---------------------------------------------------------------- problem */

.problem {
  border-top: 1px solid var(--line);
  padding-block: var(--section-pad);
}

.lede {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(1.375rem, 2.6vw, 1.75rem);
  line-height: 1.45;
  max-width: 46rem;
}

/* --------------------------------------------------------------- services */

.services {
  border-top: 1px solid var(--line);
  padding-block: var(--section-pad);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.75rem;
}

.card {
  background: #fff;
  border: 1px solid var(--line);
  border-top: 3px solid var(--accent);
  border-radius: 10px;
  padding: 2rem 1.75rem 2.25rem;
}

.card h3 {
  font-size: 1.375rem;
  margin-bottom: 0.875rem;
}

/* mid-size headings get open leading + slight positive tracking;
   1.12 stays reserved for the true display sizes */
.card h3,
.sector h3,
.principles h3 {
  line-height: 1.3;
  letter-spacing: 0.01em;
}

@media (min-width: 60.0625rem) {
  /* two-line reservation so all three card bodies open on a shared line */
  .card h3 {
    min-height: 2.6em;
  }
}

.card p {
  color: var(--ink-soft);
  font-size: 1rem;
  max-width: 62ch;
}

/* ------------------------------------------------------------ differences */

.different {
  border-top: 1px solid var(--line);
  padding-block: var(--section-pad);
}

.principles {
  list-style: none;
  margin: 0;
  padding: 0;
  max-width: 50rem;
}

.principles li {
  display: grid;
  grid-template-columns: minmax(14rem, 19rem) 1fr;
  gap: 0.5rem 2.5rem;
  padding-block: 1.75rem;
  border-top: 1px solid var(--line);
}

.principles li:first-child {
  border-top: 0;
  padding-top: 0;
}

.principles li:last-child {
  padding-bottom: 0;
}

.principles h3 {
  font-size: 1.25rem;
}

.principles h3 em {
  font-style: italic;
  color: var(--accent-deep);
}

.principles p {
  color: var(--ink-soft);
}

/* ------------------------------------------------------------------ proof */

.proof {
  background: var(--dark);
  color: var(--paper-on-dark);
  /* dark bands breathe slightly more than the paper sections */
  padding-block: calc(var(--section-pad) + 1.5rem);
}

.proof .eyebrow {
  color: var(--accent-on-dark);
}

.stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2.5rem;
  margin: 0;
}

.stat dt {
  margin-bottom: 0.75rem;
}

.stat-value {
  font-family: var(--font-display);
  font-weight: 550;
  font-size: clamp(2.5rem, 4.5vw, 3.5rem);
  line-height: 1;
  letter-spacing: -0.01em;
  color: var(--paper-on-dark);
}

.stat-unit {
  font-size: 1rem;
  font-weight: 500;
  color: var(--soft-on-dark);
  white-space: nowrap;
}

.stat dd {
  margin: 0;
  color: var(--soft-on-dark);
  font-size: 1rem;
  max-width: 58ch;
}

.proof-footnote {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--dark-line);
  color: var(--soft-on-dark);
}

.proof-footnote strong {
  color: var(--paper-on-dark);
  font-weight: 600;
}

/* ---------------------------------------------------------------- sectors */

.sectors {
  padding-block: var(--section-pad);
}

.sector-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
}

.sector h3 {
  font-size: 1.5rem;
  margin-bottom: 0.875rem;
}

.sector p {
  color: var(--ink-soft);
}

/* -------------------------------------------------------------- why rudra */

.why-rudra {
  border-top: 1px solid var(--line);
  background: var(--paper-deep);
  padding-block: var(--section-pad);
}

.why-rudra .container {
  max-width: 50rem;
  text-align: center;
}

.why-text {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(1.25rem, 2.2vw, 1.5rem);
  line-height: 1.5;
}

/* ------------------------------------------------------------------ about */

.about {
  border-top: 1px solid var(--line);
  padding-block: var(--section-pad);
}

.about .container > p:not(.eyebrow) {
  max-width: 38rem;
  font-size: 1.125rem;
}

/* -------------------------------------------------------------- CTA block */

.cta-block {
  background: var(--dark);
  color: var(--paper-on-dark);
  /* dark bands breathe slightly more than the paper sections */
  padding-block: calc(var(--section-pad) + 1.5rem);
}

.cta-block h2 {
  font-size: clamp(2.25rem, 5vw, 3.25rem);
  letter-spacing: -0.015em;
}

.cta-block p {
  max-width: 36rem;
  margin-block: 1.5rem 2.25rem;
  color: var(--soft-on-dark);
  font-size: 1.125rem;
}

/* glass secondary surface, mirroring the hero's solid + ghost rhythm */
.cta-email {
  display: inline-block;
  padding: 0.95rem 1.6rem;
  border-radius: 999px;
  line-height: 1;
  border: 1px solid rgba(243, 237, 228, 0.28);
  background: rgba(243, 237, 228, 0.06);
  color: var(--paper-on-dark);
  text-decoration: none;
  font-weight: 500;
  transition: background-color 140ms ease, color 140ms ease;
}

.cta-email:hover {
  background: rgba(243, 237, 228, 0.14);
  color: #fff;
}

/* ----------------------------------------------------------------- footer */

.site-footer {
  border-top: 1px solid var(--line);
  padding-block: 2rem;
  font-size: 0.875rem;
  color: var(--ink-soft);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.5rem 2rem;
}

.site-footer a {
  color: inherit;
  padding-block: 0.7rem; /* 44px hit area on inline boxes, no layout shift */
}

.site-footer a:hover {
  color: var(--accent-deep);
}

/* ------------------------------------------------------------- responsive */

@media (max-width: 60rem) {
  /* collapse the 3-up cards before their measure gets uncomfortable */
  .card-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 56rem) {
  .stats {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .sector-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .principles li {
    grid-template-columns: 1fr;
    gap: 0.5rem;
  }
}

@media (max-width: 40rem) {
  /* one-page site: section anchors are one scroll away, so the header
     collapses to brand + a single CTA pill on one clean row */
  .site-nav a:not(.nav-cta) {
    display: none;
  }

  .site-nav .nav-cta {
    border: 1.5px solid var(--accent);
    border-radius: 999px;
    padding: 0.4rem 1rem;
    margin: 0;
  }
}

/* -------------------------------------------------------------------- print */

@media print {
  .skip-link {
    display: none;
  }

  .proof,
  .cta-block {
    background: #fff;
    color: var(--ink);
  }

  .proof .eyebrow {
    color: var(--accent-deep);
  }

  .stat-value,
  .proof-footnote strong,
  .cta-block h2 {
    color: var(--ink);
  }

  .stat dd,
  .stat-unit,
  .proof-footnote,
  .cta-block p {
    color: var(--ink-soft);
  }

  .button-solid,
  .button-ghost,
  .cta-email {
    color: var(--ink);
    border-color: var(--ink);
    background: none;
  }
}