/* Shivya Technologies — base stylesheet
   Single stylesheet shared by every page (static site, no build step). */

:root {
  /* Brand palette — see Brand Guide. Ink and Deep blue are the two brand-defined
     dark shades; navy-700/600 are lighter tints of Deep blue for hover/border use. */
  --navy-900: #0b1b2b; /* Ink */
  --navy-800: #13324b; /* Deep blue */
  --navy-700: #1e4a6e;
  --navy-600: #2e6690;
  --ink: #0b1b2b; /* Ink */
  --ink-soft: #6b7c8f; /* Slate */
  --pale: #9fb3c8; /* Pale — body text on dark */
  --paper: #ffffff;
  --paper-muted: #f2f5f8; /* Light */
  --line: #dce3e9;
  --accent: #00b39f; /* Signal teal — the one accent */
  --accent-dark: #009688;
  --radius: 10px;
  --max-width: 1120px;
  --shadow-sm: 0 1px 2px rgba(16, 24, 40, 0.06), 0 1px 3px rgba(16, 24, 40, 0.08);
  --shadow-md: 0 4px 12px rgba(16, 24, 40, 0.08), 0 2px 4px rgba(16, 24, 40, 0.06);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

a { color: var(--accent-dark); text-decoration: none; }
a:hover { text-decoration: underline; }

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Header / Nav ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: saturate(180%) blur(8px);
  border-bottom: 1px solid var(--line);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--ink);
}

.brand:hover { text-decoration: none; }

.brand-mark {
  width: 30px;
  height: 30px;
  flex: none;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  color: var(--ink-soft);
  font-weight: 500;
  font-size: 0.95rem;
}

.nav-links a.active,
.nav-links a:hover {
  color: var(--navy-800);
  text-decoration: none;
}

.nav-cta {
  padding: 9px 18px !important;
  border-radius: 8px;
  background: var(--navy-800);
  color: #fff !important;
  font-weight: 600 !important;
}

.nav-cta:hover { background: var(--navy-700); }

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 8px 10px;
  cursor: pointer;
}

.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--ink);
  position: relative;
  transition: 0.2s;
}
.nav-toggle span::before { content: ""; position: absolute; top: -6px; width: 20px; height: 2px; background: var(--ink); }
.nav-toggle span::after { content: ""; position: absolute; top: 6px; width: 20px; height: 2px; background: var(--ink); }

/* ---------- Hero ---------- */

.hero {
  background:
    radial-gradient(1100px 420px at 15% -10%, rgba(0, 179, 159, 0.14), transparent 60%),
    linear-gradient(180deg, var(--navy-900) 0%, var(--navy-800) 100%);
  color: #f5f7fb;
  padding: 96px 0 80px;
}

.eyebrow {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #7fd9cc;
  background: rgba(0, 179, 159, 0.12);
  border: 1px solid rgba(0, 179, 159, 0.35);
  padding: 5px 12px;
  border-radius: 999px;
  margin-bottom: 22px;
}

.tagline {
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  color: #7fd9cc;
  margin: 0 0 14px;
}

.hero h1 {
  font-size: clamp(2rem, 4.2vw, 3.1rem);
  line-height: 1.15;
  margin: 0 0 22px;
  max-width: 18ch;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.hero p.lede {
  font-size: 1.15rem;
  color: var(--pale);
  max-width: 62ch;
  margin: 0 0 34px;
}

.page-hero {
  background: linear-gradient(180deg, var(--navy-900) 0%, var(--navy-800) 100%);
  color: #f5f7fb;
  padding: 64px 0 56px;
}

.page-hero h1 {
  font-size: clamp(1.8rem, 3.4vw, 2.5rem);
  margin: 0 0 14px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.page-hero p.lede {
  color: var(--pale);
  max-width: 68ch;
  margin: 0;
  font-size: 1.05rem;
}

.btn-row { display: flex; gap: 14px; flex-wrap: wrap; }

.btn {
  display: inline-block;
  padding: 12px 22px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  cursor: pointer;
}

.btn:hover { text-decoration: none; }

.btn-primary { background: var(--accent); color: #06201f; }
.btn-primary:hover { background: #10bcb9; }

.btn-ghost {
  background: transparent;
  color: #f5f7fb;
  border-color: rgba(245, 247, 251, 0.35);
}
.btn-ghost:hover { background: rgba(245, 247, 251, 0.08); }

.btn-dark { background: var(--navy-800); color: #fff; }
.btn-dark:hover { background: var(--navy-700); }

/* ---------- Sections ---------- */

section { padding: 72px 0; }
section.tight { padding: 48px 0; }
.section-muted { background: var(--paper-muted); }

.section-head { max-width: 68ch; margin: 0 0 40px; }

.kicker {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-dark);
  margin: 0 0 10px;
}

.section-head h2 {
  font-size: clamp(1.5rem, 2.6vw, 2rem);
  margin: 0 0 12px;
  letter-spacing: -0.01em;
}

.section-head p { color: var(--ink-soft); margin: 0; font-size: 1.03rem; }

/* ---------- Cards / grids ---------- */

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }

.card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow-sm);
}

.card h3 { margin: 0 0 10px; font-size: 1.15rem; }
.card p { color: var(--ink-soft); margin: 0; }
.card ul { margin: 14px 0 0; padding-left: 20px; color: var(--ink-soft); }

.usecase-card {
  display: block;
  color: var(--ink);
  text-decoration: none;
  transition: box-shadow 0.15s ease, transform 0.15s ease;
}
.usecase-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); text-decoration: none; }
.usecase-card p + p { margin-top: 10px; }
.usecase-card .kicker { margin: 0 0 8px; }
.usecase-card .chip-row { margin-top: 18px; }
.card-link {
  display: inline-block;
  margin-top: 18px;
  color: var(--accent-dark);
  font-weight: 600;
  font-size: 0.92rem;
}
.usecase-card:hover .card-link { text-decoration: underline; }
.card ul li { margin-bottom: 6px; }

.pillar-card {
  border-radius: var(--radius);
  padding: 32px;
  border: 1px solid var(--line);
}

.pillar-card.services { background: linear-gradient(180deg, #f2fbfa, #ffffff); border-color: #bfe9e3; }
.pillar-card.platform { background: linear-gradient(180deg, var(--paper-muted), #ffffff); border-color: var(--line); }

.pillar-card .tag {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: 999px;
  margin-bottom: 14px;
}
.pillar-card.services .tag { background: #d9f5f3; color: var(--accent-dark); }
.pillar-card.platform .tag { background: var(--line); color: var(--navy-800); }

.pillar-card h3 { margin: 0 0 12px; font-size: 1.35rem; }
.pillar-card p { color: var(--ink-soft); }

.chip-row { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 18px; }
.chip {
  font-size: 0.85rem;
  font-weight: 600;
  padding: 7px 14px;
  border-radius: 999px;
  background: var(--paper-muted);
  border: 1px solid var(--line);
  color: var(--ink);
}

/* ---------- Latent space visual ---------- */

.latent-visual svg { display: block; width: 100%; height: auto; max-width: 560px; margin: 0 auto; }

/* ---------- Coming soon badge ---------- */

.badge-soon {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 4px 12px;
  border-radius: 999px;
  background: rgba(0, 179, 159, 0.12);
  border: 1px solid rgba(0, 179, 159, 0.35);
  color: #7fd9cc;
}

/* ---------- Diagrams ---------- */

.diagram-wrap {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 32px 20px;
  overflow-x: auto;
  box-shadow: var(--shadow-sm);
}

.flow {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 720px;
  justify-content: center;
}

.flow-step {
  background: var(--paper);
  border: 1.5px solid var(--navy-600);
  border-radius: 10px;
  padding: 14px 16px;
  min-width: 130px;
  text-align: center;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--navy-800);
}

.flow-arrow {
  flex: none;
  color: var(--ink-soft);
  font-size: 1.2rem;
}

.loop-caption {
  text-align: center;
  color: var(--ink-soft);
  font-size: 0.85rem;
  margin-top: 18px;
}

.pillars-diagram { display: flex; align-items: center; gap: 18px; justify-content: center; flex-wrap: wrap; }

.pillars-diagram .box {
  border-radius: 12px;
  padding: 22px;
  min-width: 240px;
  border: 1.5px solid var(--line);
}

.pillars-diagram .box.services-box { border-color: #9fdcd9; background: #f2fbfa; }
.pillars-diagram .box.platform-box { border-color: var(--line); background: var(--paper-muted); }

.pillars-diagram .box h4 {
  margin: 0 0 10px;
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.pillars-diagram .box ul { margin: 0; padding-left: 18px; font-size: 0.9rem; color: var(--ink-soft); }
.pillars-diagram .box ul li { margin-bottom: 4px; }

.pillars-diagram .swap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  color: var(--ink-soft);
  font-size: 0.78rem;
  font-weight: 600;
  text-align: center;
  max-width: 120px;
}

/* ---------- Name story ---------- */

.name-story {
  border-left: 3px solid var(--accent);
  padding: 4px 0 4px 20px;
  color: var(--ink-soft);
  font-size: 1rem;
  font-style: italic;
}

.name-story strong { color: var(--ink); font-style: normal; }

/* ---------- Approach steps ---------- */

.steps { counter-reset: step; list-style: none; margin: 0; padding: 0; }

.step {
  counter-increment: step;
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 20px;
  padding: 28px 0;
  border-top: 1px solid var(--line);
}

.step:first-child { border-top: none; }

.step .num {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--navy-800);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
}

.step .num::before { content: counter(step); }

.step h3 { margin: 0 0 8px; font-size: 1.1rem; }
.step p { margin: 0; color: var(--ink-soft); }

/* ---------- Infographic timeline ---------- */

.infographic-timeline {
  position: relative;
  padding-left: 34px;
}

.infographic-timeline::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 6px;
  bottom: 6px;
  width: 2px;
  background: var(--line);
}

.tl-item {
  position: relative;
  padding-bottom: 30px;
}

.tl-item:last-child { padding-bottom: 0; }

.tl-item::before {
  content: "";
  position: absolute;
  left: -34px;
  top: 3px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--accent);
  border: 3px solid var(--paper);
  box-shadow: 0 0 0 2px var(--accent);
}

.tl-item.tl-outcome::before { background: var(--navy-800); box-shadow: 0 0 0 2px var(--navy-800); }

.tl-time {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--accent-dark);
  margin-bottom: 5px;
}

.tl-item h4 { margin: 0 0 6px; font-size: 1.02rem; }
.tl-item p { margin: 0; color: var(--ink-soft); }

.tl-item.tl-outcome {
  background: var(--paper-muted);
  border-radius: var(--radius);
  padding: 16px 20px;
  margin-left: -20px;
}
.tl-item.tl-outcome h4 { color: var(--navy-900); }

/* ---------- Comparison bars ---------- */

.compare-bars { display: flex; flex-direction: column; gap: 18px; }

.compare-bar-row .bar-label {
  display: flex;
  justify-content: space-between;
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 7px;
  color: var(--ink);
}

.compare-bar-track {
  background: var(--paper-muted);
  border-radius: 999px;
  height: 14px;
  overflow: hidden;
}

.compare-bar-fill { height: 100%; border-radius: 999px; }
.compare-bar-fill.accent { background: var(--accent); }
.compare-bar-fill.neutral { background: var(--ink-soft); }

/* ---------- Legal content ---------- */

.legal-content { max-width: 760px; }

.legal-content .updated {
  font-size: 0.85rem;
  color: var(--ink-soft);
  margin: 0 0 36px;
}

.legal-content h2 {
  font-size: 1.25rem;
  margin: 40px 0 12px;
  color: var(--navy-900);
}
.legal-content h2:first-of-type { margin-top: 0; }

.legal-content p { color: var(--ink-soft); margin: 0 0 14px; line-height: 1.7; }
.legal-content ul { color: var(--ink-soft); padding-left: 22px; margin: 0 0 14px; }
.legal-content li { margin-bottom: 6px; }

/* ---------- Pull quote ---------- */

.pull-quote {
  border-left: 4px solid var(--accent);
  padding: 20px 26px;
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--navy-900);
  background: var(--paper-muted);
  border-radius: 0 var(--radius) var(--radius) 0;
  line-height: 1.5;
}

.principle-callout {
  border: 1.5px solid var(--navy-800);
  border-radius: var(--radius);
  padding: 20px 26px;
  background: var(--paper);
  font-size: 1.02rem;
  color: var(--ink);
}
.principle-callout strong { color: var(--accent-dark); }

/* ---------- Table ---------- */

.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); }

table { width: 100%; border-collapse: collapse; min-width: 640px; background: var(--paper); }

th, td { text-align: left; padding: 16px 20px; border-bottom: 1px solid var(--line); vertical-align: top; font-size: 0.95rem; }

th { background: var(--paper-muted); font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.04em; color: var(--ink-soft); }

tr:last-child td { border-bottom: none; }

/* ---------- CTA band ---------- */

.cta-band {
  background: var(--navy-800);
  color: #fff;
  border-radius: 16px;
  padding: 48px;
  text-align: center;
}

.cta-band h2 { margin: 0 0 12px; font-size: 1.6rem; }
.cta-band p { color: var(--pale); margin: 0 0 26px; }

/* ---------- Contact ---------- */

.contact-grid { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 40px; align-items: start; }

.contact-form { display: grid; gap: 16px; }

.field label {
  display: block;
  font-weight: 600;
  font-size: 0.88rem;
  margin-bottom: 6px;
}

.field input,
.field textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  font-family: inherit;
  font-size: 0.95rem;
  background: #fff;
  color: var(--ink);
}

.field input:focus,
.field textarea:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

.contact-info .card { margin-bottom: 18px; }
.contact-info h3 { font-size: 1rem; margin: 0 0 6px; }
.contact-info p { margin: 0; color: var(--ink-soft); }

.form-note {
  font-size: 0.82rem;
  color: var(--ink-soft);
  margin-top: 4px;
}

/* ---------- Footer ---------- */

.site-footer {
  background: var(--navy-900);
  color: var(--pale);
  padding: 48px 0 28px;
  margin-top: 40px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 32px;
  margin-bottom: 32px;
}

.footer-grid h4 {
  color: #f5f7fb;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin: 0 0 14px;
}

.footer-grid ul { list-style: none; margin: 0; padding: 0; }
.footer-grid li { margin-bottom: 10px; }
.footer-grid a { color: var(--pale); }
.footer-grid a:hover { color: #fff; }

.footer-brand p { max-width: 40ch; font-size: 0.92rem; }

.footer-social { display: flex; gap: 14px; margin-top: 18px; }
.footer-social a { color: var(--pale); display: inline-flex; }
.footer-social a:hover { color: var(--accent); }
.footer-social svg { width: 19px; height: 19px; fill: currentColor; display: block; }

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 20px;
  font-size: 0.82rem;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
}

.footer-legal { display: flex; gap: 18px; }
.footer-legal a { color: var(--pale); }
.footer-legal a:hover { color: #fff; }

/* ---------- Utility ---------- */

.mt-0 { margin-top: 0; }
.text-center { text-align: center; }

/* ---------- Responsive ---------- */

@media (max-width: 900px) {
  .grid-3 { grid-template-columns: 1fr; }
  .grid-4 { grid-template-columns: 1fr 1fr; }
  .grid-2 { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 560px) {
  .grid-4 { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
  .nav-links {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: #fff;
    border-bottom: 1px solid var(--line);
    flex-direction: column;
    align-items: flex-start;
    padding: 18px 24px 24px;
    gap: 16px;
    display: none;
  }
  .nav-links.open { display: flex; }
  .nav-toggle { display: block; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; }
}