/* =========================================================
   TrackSync Technologies Pvt Ltd: single-page site styles
   Idea: two tracks that merge into one ("track" + "sync").
   ========================================================= */

:root {
  --ink: #0f1e2b;          /* deep navy, hero + contact */
  --ink-soft: #1a2f41;
  --paper: #f4f6f5;        /* cool off-white */
  --paper-alt: #e9eeed;
  --text: #1c2a35;
  --muted: #566672;
  --steel: #7fa3b3;
  --teal: #1c8a86;
  --signal: #f2a81d;       /* the single accent: the moving signal dot */
  --line: #cfd9d8;

  --font-sans: "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;

  --radius: 8px;
  --space: clamp(3.5rem, 8vw, 6.5rem);
  --header-h: 64px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 8px);
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--text);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
}

img, svg { max-width: 100%; display: block; }
a { color: inherit; }
address { font-style: normal; }

.wrap {
  width: min(1120px, 100% - 2.5rem);
  margin-inline: auto;
}

:focus-visible {
  outline: 3px solid var(--signal);
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 8px;
  background: var(--signal);
  color: var(--ink);
  padding: .5rem 1rem;
  border-radius: var(--radius);
  z-index: 200;
}
.skip-link:focus { left: 8px; }

/* ---------- Header ---------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  height: var(--header-h);
  z-index: 100;
  color: #fff;
  transition: background-color .25s ease, box-shadow .25s ease;
}
.site-header.scrolled {
  background: rgba(15, 30, 43, .96);
  box-shadow: 0 1px 0 rgba(255, 255, 255, .08);
}
.header-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo {
  display: inline-flex;
  align-items: center;
  gap: .6rem;
  text-decoration: none;
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: .01em;
  color: #fff;
}

.site-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: .25rem;
}
.site-nav a {
  display: block;
  padding: .5rem .85rem;
  text-decoration: none;
  font-size: .95rem;
  color: rgba(255, 255, 255, .78);
  border-bottom: 2px solid transparent;
  transition: color .2s ease, border-color .2s ease;
}
.site-nav a:hover { color: #fff; }
.site-nav a.active {
  color: #fff;
  border-bottom-color: var(--signal);
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  background: none;
  border: 0;
  cursor: pointer;
  padding: 0;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
}
.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: #fff;
  transition: transform .25s ease, opacity .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); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-block;
  font: inherit;
  font-weight: 600;
  padding: .8rem 1.4rem;
  border-radius: var(--radius);
  border: 2px solid transparent;
  text-decoration: none;
  cursor: pointer;
  transition: background-color .2s ease, color .2s ease, border-color .2s ease;
}
.btn-primary { background: var(--signal); color: var(--ink); }
.btn-primary:hover { background: #ffbc3d; }
.btn-ghost { border-color: rgba(255, 255, 255, .45); color: #fff; background: transparent; }
.btn-ghost:hover { border-color: #fff; background: rgba(255, 255, 255, .08); }
.btn-ghost-light { border-color: rgba(255, 255, 255, .45); color: #fff; background: transparent; padding: .6rem 1.1rem; }
.btn-ghost-light:hover { border-color: #fff; background: rgba(255, 255, 255, .08); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: min(100svh, 760px);
  display: flex;
  align-items: center;
  background: var(--ink);
  color: #fff;
  overflow: hidden;
  padding: calc(var(--header-h) + 3rem) 0 11rem;
}
.hero-inner { position: relative; z-index: 2; }
.hero-kicker {
  margin: 0 0 1rem;
  color: var(--steel);
  font-size: .95rem;
}
.hero h1 {
  margin: 0;
  max-width: 14ch;
  font-size: clamp(2.2rem, 7.2vw, 4.6rem);
  line-height: 1.04;
  letter-spacing: -.02em;
  font-weight: 800;
  overflow-wrap: break-word;
}
.hero-sub {
  margin: 1.4rem 0 2rem;
  max-width: 46ch;
  color: rgba(255, 255, 255, .78);
  font-size: 1.1rem;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: .8rem; }

/* tracks graphic */
.tracks {
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 220px;
  z-index: 1;
}
.track {
  fill: none;
  stroke-width: 3;
  stroke-linecap: round;
  stroke-dasharray: 1400;
  stroke-dashoffset: 1400;
  animation: draw 2.2s ease-out .2s forwards;
}
.track-a { stroke: var(--steel); }
.track-b { stroke: var(--teal); }
.node { fill: var(--ink); stroke: var(--signal); stroke-width: 3; }
.dot { fill: var(--signal); }

@keyframes draw { to { stroke-dashoffset: 0; } }

/* ---------- Sections ---------- */
.section { padding: var(--space) 0; }
.section-alt { background: var(--paper-alt); }
.section-dark { background: var(--ink); color: #fff; }

.section-head { margin-bottom: 2.5rem; max-width: 60ch; }
.section-head h2,
.contact-info h2 {
  margin: 0 0 .5rem;
  font-size: clamp(1.7rem, 4vw, 2.4rem);
  line-height: 1.15;
  letter-spacing: -.01em;
}
.section-head p { margin: 0; color: var(--muted); }

h3 { margin: 0 0 1rem; font-size: 1.15rem; }

/* ---------- Company ---------- */
.company-grid {
  display: grid;
  gap: 2.5rem;
  grid-template-columns: 1fr;
}
.facts { margin: 0; border-top: 2px solid var(--ink); }
.fact {
  display: grid;
  grid-template-columns: minmax(0, 11rem) 1fr;
  gap: 1rem;
  padding: .95rem 0;
  border-bottom: 1px solid var(--line);
}
.fact dt { color: var(--muted); }
.fact dd { margin: 0; font-weight: 600; overflow-wrap: anywhere; }
.mono { font-family: var(--font-mono); font-weight: 500; letter-spacing: .02em; }

.activity {
  align-self: start;
  background: var(--ink);
  color: #fff;
  padding: 1.75rem;
  border-radius: var(--radius);
  border-left: 6px solid var(--signal);
}
.activity h3 { color: var(--steel); font-size: 1rem; font-weight: 600; }
.activity-text { margin: 0 0 1rem; font-size: 1.35rem; line-height: 1.35; font-weight: 600; }
.activity-note { margin: 0; color: rgba(255, 255, 255, .65); font-size: .92rem; }

/* ---------- Directors / capital ---------- */
.split { display: grid; gap: 3rem; grid-template-columns: 1fr; }
.people { list-style: none; margin: 0; padding: 0; border-top: 2px solid var(--ink); }
.people li {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: .25rem 1rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--line);
}
.person { font-weight: 600; font-size: 1.1rem; }
.muted { color: var(--muted); }

.capital { margin: 0; border-top: 2px solid var(--ink); }
.capital div {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: baseline;
  gap: .25rem 1rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--line);
}
.capital dt { color: var(--muted); }
.capital dd { margin: 0; font-size: 1.5rem; font-weight: 700; }

/* ---------- Location ---------- */
.address-block {
  display: flex;
  align-items: flex-start;
  gap: 1.25rem;
  max-width: 640px;
  padding: 1.75rem;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}
.pin { flex: none; color: var(--teal); margin-top: .2rem; }
.address-block address { font-size: 1.2rem; line-height: 1.55; font-weight: 600; }

/* ---------- Contact ---------- */
.contact-grid { display: grid; gap: 3rem; grid-template-columns: 1fr; }
.contact-info p { margin: 0 0 1.25rem; color: rgba(255, 255, 255, .78); }
.email-line { margin-bottom: 1rem !important; }
.email-link {
  color: #fff;
  font-size: clamp(1.05rem, 3.6vw, 1.4rem);
  font-weight: 600;
  overflow-wrap: anywhere;
  text-decoration-color: var(--signal);
  text-underline-offset: 5px;
  text-decoration-thickness: 2px;
}
.email-link:hover { color: var(--signal); }
.copy-status { margin-left: .75rem; color: var(--signal); font-weight: 600; }

.contact-form {
  background: var(--ink-soft);
  padding: 1.75rem;
  border-radius: var(--radius);
}
.field { margin-bottom: 1.1rem; }
.field label { display: block; margin-bottom: .35rem; font-weight: 600; font-size: .95rem; }
.field input,
.field textarea {
  width: 100%;
  font: inherit;
  color: #fff;
  background: var(--ink);
  border: 1.5px solid #3a5266;
  border-radius: var(--radius);
  padding: .75rem .9rem;
  transition: border-color .2s ease;
}
.field textarea { resize: vertical; min-height: 120px; }
.field input:focus,
.field textarea:focus { outline: none; border-color: var(--signal); box-shadow: 0 0 0 3px rgba(242, 168, 29, .3); }
.field.invalid input,
.field.invalid textarea { border-color: #ff8a80; }
.error { margin: .35rem 0 0; min-height: 0; color: #ffb3ac; font-size: .9rem; }
.form-note { margin: 1rem 0 0; color: rgba(255, 255, 255, .65); font-size: .9rem; }

/* ---------- Footer ---------- */
.site-footer {
  background: #09141d;
  color: rgba(255, 255, 255, .72);
  padding: 2.5rem 0;
  font-size: .95rem;
}
.footer-inner { display: grid; gap: 1.5rem; }
.footer-inner p { margin: 0 0 .5rem; }
.footer-name { color: #fff; font-weight: 700; }
.site-footer a { color: #fff; text-underline-offset: 3px; }
.copyright { color: rgba(255, 255, 255, .55); font-size: .88rem; }

/* ---------- Back to top ---------- */
.to-top {
  position: fixed;
  right: 1.1rem;
  bottom: 1.1rem;
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  border: 0;
  border-radius: 50%;
  background: var(--signal);
  color: var(--ink);
  cursor: pointer;
  box-shadow: 0 6px 18px rgba(0, 0, 0, .25);
  opacity: 0;
  pointer-events: none;
  transform: translateY(10px);
  transition: opacity .25s ease, transform .25s ease;
  z-index: 90;
}
.to-top.visible { opacity: 1; pointer-events: auto; transform: none; }

/* ---------- Tablet and up ---------- */
@media (min-width: 900px) {
  .company-grid { grid-template-columns: 1.4fr 1fr; gap: 3.5rem; }
  .split { grid-template-columns: 1.2fr 1fr; gap: 4rem; }
  .contact-grid { grid-template-columns: 1fr 1.1fr; gap: 4rem; align-items: start; }
  .footer-inner { grid-template-columns: 1fr auto; align-items: end; }
}

/* ---------- Mobile navigation ---------- */
@media (max-width: 899px) {
  .nav-toggle { display: flex; }

  .site-nav {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: var(--ink);
    border-top: 1px solid rgba(255, 255, 255, .08);
    padding: .75rem 1.25rem 1.25rem;
    transform: translateY(-120%);
    visibility: hidden;
    transition: transform .3s ease, visibility 0s linear .3s;
  }
  .site-nav.open {
    transform: none;
    visibility: visible;
    transition: transform .3s ease;
  }
  .site-nav ul { flex-direction: column; gap: 0; }
  .site-nav a { padding: .9rem 0; border-bottom: 1px solid rgba(255, 255, 255, .08); font-size: 1.05rem; }
  .site-nav a.active { border-bottom-color: var(--signal); }
  .site-header.menu-open { background: var(--ink); }

  .fact { grid-template-columns: 1fr; gap: .15rem; }
  .hero { padding-bottom: 9rem; }
  .tracks { height: 160px; }
  .copy-status { display: block; margin: .6rem 0 0; }
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; }
  .track { animation: none; stroke-dashoffset: 0; }
}

/* =========================================================
   Multi-page additions
   ========================================================= */
.site-nav a[aria-current="page"] { color: #fff; border-bottom-color: var(--signal); }
.site-header.solid { background: rgba(15, 30, 43, .96); }

.page-hero {
  background: var(--ink);
  color: #fff;
  padding: calc(var(--header-h) + 3.5rem) 0 3.5rem;
  border-bottom: 4px solid var(--signal);
}
.page-hero h1 { margin: 0 0 .75rem; font-size: clamp(2rem, 5.5vw, 3.2rem); line-height: 1.1; letter-spacing: -.02em; }
.page-hero p { margin: 0; max-width: 56ch; color: rgba(255,255,255,.78); font-size: 1.1rem; }

.intro { max-width: 62ch; font-size: 1.15rem; margin: 0 0 2.5rem; }

.link-rows { list-style: none; margin: 0; padding: 0; border-top: 2px solid var(--ink); }
.link-rows a {
  display: grid;
  grid-template-columns: minmax(0, 12rem) 1fr;
  gap: .25rem 1.5rem;
  padding: 1.25rem 0;
  border-bottom: 1px solid var(--line);
  text-decoration: none;
  transition: background-color .2s ease, padding-left .2s ease;
}
.link-rows a:hover { background: var(--paper-alt); padding-left: .75rem; }
.link-rows strong { font-size: 1.2rem; }
.link-rows span { color: var(--muted); }

.rows { list-style: none; margin: 0; padding: 0; border-top: 2px solid var(--ink); }
.rows li { padding: 1.4rem 0; border-bottom: 1px solid var(--line); display: grid; gap: .35rem 2rem; grid-template-columns: 1fr; }
.rows h3 { margin: 0; }
.rows p { margin: 0; color: var(--muted); max-width: 60ch; }

.steps { list-style: none; counter-reset: step; margin: 0; padding: 0; border-top: 2px solid var(--ink); }
.steps li { counter-increment: step; display: grid; grid-template-columns: 3rem 1fr; gap: 1rem; padding: 1.4rem 0; border-bottom: 1px solid var(--line); }
.steps li::before { content: counter(step); font-size: 1.6rem; font-weight: 800; color: var(--teal); line-height: 1.2; }
.steps h3 { margin: 0 0 .25rem; }
.steps p { margin: 0; color: var(--muted); max-width: 60ch; }

.plans { display: grid; gap: 2rem; grid-template-columns: 1fr; }
.plan { border-top: 4px solid var(--teal); padding-top: 1.25rem; }
.plan h3 { font-size: 1.3rem; margin-bottom: .5rem; }
.plan p { margin: 0 0 1.25rem; color: var(--muted); }
.plan .quote { font-weight: 700; font-size: 1.1rem; }
.plan a.btn { margin-top: .25rem; }
.btn-dark { background: var(--ink); color: #fff; }
.btn-dark:hover { background: var(--ink-soft); }
.note-line { margin-top: 2.5rem; color: var(--muted); }

.contact-details { margin: 1.5rem 0 0; border-top: 1px solid rgba(255,255,255,.2); }
.contact-details div { padding: .9rem 0; border-bottom: 1px solid rgba(255,255,255,.2); }
.contact-details dt { color: var(--steel); font-size: .9rem; margin-bottom: .15rem; }
.contact-details dd { margin: 0; font-weight: 600; }

.cta-band { background: var(--ink); color: #fff; padding: 3.5rem 0; }
.cta-band .wrap { display: flex; flex-wrap: wrap; gap: 1.25rem 2rem; align-items: center; justify-content: space-between; }
.cta-band h2 { margin: 0; font-size: clamp(1.4rem, 3.5vw, 2rem); }

@media (min-width: 900px) {
  .rows li { grid-template-columns: 16rem 1fr; }
  .plans { grid-template-columns: repeat(3, 1fr); gap: 2.5rem; }
}
@media (max-width: 899px) {
  .link-rows a { grid-template-columns: 1fr; }
}