/* ============================================================
   SevaFlow — Marketing Site Design System
   Palette: pale carbon-copy paper + institutional indigo + marigold
   Type: Space Grotesk (display) / Inter (body) / IBM Plex Mono (data)
   Signature: the "flow line" — a continuous path with waypoint
   stamps that runs through the page, tracing an application's
   real journey from walk-in to approval.
   ============================================================ */

:root {
  --paper:      #EFF2F1;   /* pale carbon-copy blue-grey, not warm cream */
  --paper-alt:  #E7EBE9;
  --panel:      #FFFFFF;
  --ink:        #14171F;
  --ink-soft:   #4A5058;
  --line:       #D6DCDA;

  --indigo:     #4F46E5;
  --indigo-deep:#3730A3;
  --indigo-soft:#EEF0FD;

  --marigold:   #D9932E;
  --marigold-soft: #FBF0DE;

  --seal:       #B23A2E;   /* used sparingly — the "stamp" accent */

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --shadow-card: 0 1px 2px rgba(20,23,31,0.04), 0 8px 24px rgba(20,23,31,0.06);

  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'Inter', sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

/* Subtle ledger-ruling texture on the paper background — evokes the
   register books every E-Sevai counter still keeps, without being loud. */
body {
  background-image: repeating-linear-gradient(
    to bottom, transparent, transparent 39px, var(--line) 39px, var(--line) 40px
  );
  background-attachment: local;
}

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

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: -0.01em;
  margin: 0;
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--indigo-deep);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.eyebrow::before {
  content: '';
  width: 7px; height: 7px;
  background: var(--marigold);
  border-radius: 2px;
  transform: rotate(45deg);
}

.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 28px;
}

/* ---------- Nav ---------- */
.site-nav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(239,242,241,0.86);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.site-nav .container {
  display: flex; align-items: center; justify-content: space-between;
  height: 68px;
}
.brand {
  display: flex; align-items: center; gap: 10px;
  font-family: var(--font-display); font-weight: 700; font-size: 19px;
  text-decoration: none; color: var(--ink);
}
.brand .mark {
  width: 28px; height: 28px; border-radius: 7px;
  background: var(--indigo);
  position: relative;
  flex-shrink: 0;
}
.brand .mark::after {
  content: '';
  position: absolute; left: 6px; top: 13px;
  width: 16px; height: 2px; background: var(--marigold);
  box-shadow: 0 -6px 0 rgba(255,255,255,0.9), 0 6px 0 rgba(255,255,255,0.55);
}
.nav-links {
  display: flex; align-items: center; gap: 32px;
  font-size: 14.5px; font-weight: 500;
  list-style: none; margin: 0; padding: 0;
}
.nav-links a { text-decoration: none; color: var(--ink-soft); transition: color .15s; }
.nav-links a:hover, .nav-links a.current { color: var(--ink); }
.nav-cta {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--indigo); color: #ffffff !important;
  padding: 10px 20px; border-radius: 999px;
  font-size: 14px; font-weight: 700; text-decoration: none;
  box-shadow: 0 2px 8px rgba(79,70,229,0.35);
  transition: background .15s, transform .15s, box-shadow .15s;
}
.nav-cta:hover { background: var(--indigo-deep); transform: translateY(-1px); box-shadow: 0 4px 14px rgba(79,70,229,0.45); }
.nav-mobile-toggle { display: none; }

@media (max-width: 860px) {
  .nav-links { display: none; }
  .nav-mobile-toggle {
    display: flex; align-items: center; justify-content: center;
    width: 40px; height: 40px; border-radius: 10px;
    background: transparent; border: 1px solid var(--line);
    cursor: pointer;
  }
  .nav-links.mobile-open {
    display: flex; flex-direction: column; align-items: flex-start; gap: 4px;
    position: absolute; top: 68px; left: 0; right: 0;
    background: var(--panel); border-bottom: 1px solid var(--line);
    padding: 16px 28px 24px;
  }
  .nav-links.mobile-open .nav-cta { margin-top: 10px; }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px 26px; border-radius: 999px;
  font-family: var(--font-body); font-size: 15px; font-weight: 600;
  text-decoration: none; cursor: pointer; border: 1px solid transparent;
  transition: transform .15s, background .15s, box-shadow .15s;
}
.btn-primary { background: var(--indigo); color: #fff; }
.btn-primary:hover { background: var(--indigo-deep); transform: translateY(-2px); box-shadow: 0 10px 24px rgba(79,70,229,0.28); }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--ink); }
.btn-ghost:hover { background: var(--ink); color: var(--paper); }
.btn-lg { padding: 16px 32px; font-size: 16px; }

/* ---------- Flow line (signature element) ----------
   A continuous vertical path with numbered "waypoint" stamps —
   these numbers are earned: they trace the actual, real sequence
   of an application's life (Walk-in -> Filed -> Reminder -> Renewed),
   not decoration. */
.flow-rail {
  position: relative;
  padding-left: 56px;
}
.flow-rail::before {
  content: '';
  position: absolute; left: 19px; top: 6px; bottom: 6px;
  width: 2px;
  background: linear-gradient(to bottom, var(--indigo) 0%, var(--marigold) 100%);
  opacity: 0.35;
}
.flow-stop {
  position: relative;
  padding-bottom: 56px;
}
.flow-stop:last-child { padding-bottom: 0; }
.flow-stop .stamp {
  position: absolute; left: -56px; top: 0;
  width: 40px; height: 40px;
  border-radius: 50%;
  background: var(--panel);
  border: 2px solid var(--indigo);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-mono); font-size: 13px; font-weight: 600;
  color: var(--indigo-deep);
  box-shadow: var(--shadow-card);
}
.flow-stop h3 { font-size: 20px; margin-bottom: 8px; }
.flow-stop p { color: var(--ink-soft); margin: 0; max-width: 480px; }

/* ---------- Cards ---------- */
.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

.feature-card {
  padding: 28px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  transition: transform .18s, box-shadow .18s;
}
.feature-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-card), 0 16px 32px rgba(20,23,31,0.08); }
.feature-card .icon-box {
  width: 44px; height: 44px; border-radius: 12px;
  background: var(--indigo-soft); color: var(--indigo-deep);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 18px;
}
.feature-card h3 { font-size: 18px; margin-bottom: 8px; }
.feature-card p { color: var(--ink-soft); font-size: 14.5px; margin: 0; }

/* ---------- Section rhythm ---------- */
.section { padding: 96px 0; }
.section-tight { padding: 64px 0; }
.section-head { max-width: 640px; margin-bottom: 56px; }
.section-head h2 { font-size: clamp(28px, 4vw, 40px); margin: 14px 0 16px; }
.section-head p { color: var(--ink-soft); font-size: 17px; margin: 0; }

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--line);
  padding: 56px 0 32px;
  background: var(--paper-alt);
}
.footer-grid {
  display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 40px;
  margin-bottom: 40px;
}
.footer-grid h4 { font-size: 13px; text-transform: uppercase; letter-spacing: 0.06em; color: var(--ink-soft); margin-bottom: 14px; font-family: var(--font-body); font-weight: 600; }
.footer-grid ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 10px; }
.footer-grid a { text-decoration: none; color: var(--ink-soft); font-size: 14px; }
.footer-grid a:hover { color: var(--ink); }
.footer-bottom {
  display: flex; justify-content: space-between; align-items: center;
  padding-top: 24px; border-top: 1px solid var(--line);
  font-size: 13px; color: var(--ink-soft);
  flex-wrap: wrap; gap: 12px;
}

@media (max-width: 760px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .section { padding: 64px 0; }
}

/* ---------- Reveal on scroll ---------- */
.reveal { opacity: 0; transform: translateY(16px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in { opacity: 1; transform: translateY(0); }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ---------- Focus visibility ---------- */
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible {
  outline: 2px solid var(--indigo);
  outline-offset: 2px;
}