/* ============================================================
   IndiCAD Solutions — one-page site
   ============================================================ */

:root {
  --bg:        #ffffff;
  --bg-soft:   #f6f7f9;
  --bg-tint:   #f1f2fe;
  --text:      #12131a;
  --text-soft: #545a6b;
  --text-mute: #888ea0;
  --border:    #e9e9ef;
  --border-2:  #dfe0e8;

  /* graphite for structure, one warm accent used sparingly */
  --brand:     #18191f;
  --brand-600: #000000;
  --brand-soft:#eceef0;
  --brand-ink: #18191f;
  --accent:     #a8442a;   /* terracotta — primary button, links, active dot */
  --accent-600: #8d3721;

  --sh-xs: 0 1px 2px rgba(18,19,26,.06);
  --sh-sm: 0 2px 8px -2px rgba(18,19,26,.10), 0 1px 2px rgba(18,19,26,.05);
  --sh-md: 0 14px 34px -12px rgba(18,19,26,.16), 0 4px 10px -4px rgba(18,19,26,.07);
  --sh-lg: 0 40px 80px -28px rgba(18,19,26,.28), 0 12px 26px -12px rgba(18,19,26,.12);

  --r-sm: 10px;
  --r:    14px;
  --r-lg: 20px;
  --r-pill: 999px;

  --wrap: 1140px;
  --pad: clamp(20px, 5vw, 32px);
  --hh: 66px;

  --font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --head: "Inter Tight", "Inter", -apple-system, "Segoe UI", sans-serif;

  color-scheme: light;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--hh) + 16px); -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img, svg { max-width: 100%; display: block; }
a { color: var(--accent); text-decoration: none; }
h1, h2, h3, h4 {
  font-family: var(--head);
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: -0.022em;
  margin: 0;
  color: var(--text);
}
p { margin: 0; }
::selection { background: var(--brand); color: #fff; }
:focus-visible { outline: 2px solid var(--brand); outline-offset: 3px; border-radius: 3px; }

.wrap { width: 100%; max-width: var(--wrap); margin-inline: auto; padding-inline: var(--pad); }
.section { padding-block: clamp(60px, 8vw, 100px); }
.section--soft { background: var(--bg-soft); }

.lede { max-width: 640px; margin-bottom: clamp(34px, 5vw, 52px); }
.kicker {
  display: inline-block;
  font-size: 12px; font-weight: 600; letter-spacing: 0.11em;
  text-transform: uppercase; color: var(--accent); margin-bottom: 14px;
}
.h2 { font-size: clamp(1.7rem, 3.4vw, 2.5rem); letter-spacing: -0.03em; }
.sub { margin-top: 15px; font-size: 1.06rem; color: var(--text-soft); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  flex: none; padding: 12px 20px;
  font-family: var(--font); font-size: 0.94rem; font-weight: 550; line-height: 1;
  white-space: nowrap; color: #fff; background: var(--accent);
  border: 1px solid transparent; border-radius: var(--r-sm);
  cursor: pointer; box-shadow: var(--sh-sm);
  transition: transform .14s ease, background .14s ease, box-shadow .14s ease;
}
.btn:hover { background: var(--accent-600); color: #fff; transform: translateY(-1px); box-shadow: var(--sh-md); }
.btn:active { transform: translateY(0); }
.btn svg { width: 15px; height: 15px; transition: transform .14s ease; }
.btn:hover svg { transform: translateX(3px); }
.btn--ghost { color: var(--text); background: var(--bg); border-color: var(--border-2); box-shadow: var(--sh-xs); }
.btn--ghost:hover { background: var(--bg-soft); color: var(--text); border-color: var(--text-mute); }
.btn--lg { padding: 14px 24px; font-size: 1rem; }

/* ---------- Header ---------- */
.header {
  position: sticky; top: 0; z-index: 60; height: var(--hh);
  background: transparent;
  border-bottom: 1px solid transparent;
  transition: border-color .3s ease, background .3s ease, backdrop-filter .3s ease;
}
body.scrolled .header {
  background: color-mix(in srgb, var(--bg) 84%, transparent);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom-color: var(--border);
}
.header .wrap { height: 100%; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.header .brand { visibility: hidden; }          /* space-holder; the visible logo is .brandfx */
.header .brand img { height: 40px; width: auto; }

.nav { display: flex; align-items: center; gap: 2px; opacity: 0; transition: opacity .35s ease; }
body.scrolled .nav { opacity: 1; }
.nav a {
  position: relative; font-size: 0.9rem; font-weight: 500; color: var(--text-soft);
  padding: 8px 13px; border-radius: var(--r-sm);
  transition: color .15s ease, background .15s ease;
}
.nav a:hover { color: var(--text); background: var(--bg-soft); }
.nav a.current { color: var(--brand); }
.nav a.current::after {
  content: ""; position: absolute; left: 13px; right: 13px; bottom: 3px;
  height: 2px; background: var(--brand); border-radius: 2px;
}
.nav .btn { margin-left: 8px; padding: 9px 16px; color: #fff; }
.nav .btn:hover { color: #fff; }

.burger {
  display: none; width: 40px; height: 40px; align-items: center; justify-content: center;
  border: 1px solid var(--border-2); background: var(--bg); border-radius: var(--r-sm);
  color: var(--text); cursor: pointer;
}
.burger svg { width: 20px; height: 20px; }

@media (max-width: 840px) {
  .burger { display: inline-flex; opacity: 0; transition: opacity .35s ease; }
  body.scrolled .burger { opacity: 1; }
  .nav {
    position: fixed; inset: var(--hh) 0 auto 0; flex-direction: column; align-items: stretch;
    gap: 2px; padding: 12px var(--pad) 20px; background: var(--bg);
    border-bottom: 1px solid var(--border); box-shadow: var(--sh-md);
    transform: translateY(-118%); transition: transform .3s cubic-bezier(.4,0,.2,1), opacity .35s ease;
  }
  .nav.open { transform: translateY(0); opacity: 1; }
  .nav a { padding: 13px 10px; }
  .nav a.current::after { display: none; }
  .nav .btn { margin: 12px 0 0; }
}

/* ---------- Shrinking brand logo (scroll intro) ---------- */
.brandfx { position: fixed; top: 0; left: 0; right: 0; z-index: 70; pointer-events: none; }
.brandfx .wrap { padding-top: 13px; }
.hero-logo {
  display: inline-block;
  transform-origin: 0 0;
  will-change: transform;
  pointer-events: none;
}
body.brandfx-done .hero-logo { pointer-events: auto; }
.hero-logo img { height: 40px; width: auto; display: block; }

/* ---------- Intro (scroll room for the logo) ---------- */
.intro {
  position: relative;
  margin-top: calc(-1 * var(--hh));   /* sit under the transparent header so the image reaches the top */
  min-height: calc(100vh + var(--hh));
  min-height: calc(100svh + var(--hh));
  display: flex;
  align-items: flex-end;
  justify-content: center;
  padding-bottom: clamp(40px, 9vh, 96px);
  background: #eceef2 url("../assets/drawing.jpg") center / cover no-repeat;
}
.intro::after {           /* light scrim so the logo reads and it fades into the page */
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(180deg,
    rgba(255,255,255,.72) 0%,
    rgba(255,255,255,.48) 38%,
    rgba(255,255,255,.78) 78%,
    var(--bg) 100%);
}
.intro[hidden] { display: none; }
.intro-cue { position: relative; z-index: 1; color: var(--text-soft); }
.intro-cue svg { width: 22px; height: 22px; animation: bob 1.7s ease-in-out infinite; }
@keyframes bob { 0%,100% { transform: translateY(0); } 50% { transform: translateY(6px); } }
@media (prefers-reduced-motion: reduce) { .intro-cue svg { animation: none; } }

/* ---------- Hero ---------- */
.hero { position: relative; padding-block: clamp(20px, 4vw, 48px) clamp(48px, 7vw, 80px); overflow: hidden; }
.hero::before {
  content: ""; position: absolute; top: -220px; left: 50%; width: 900px; height: 560px;
  transform: translateX(-50%);
  background: radial-gradient(45% 50% at 50% 50%, rgba(24,25,31,.045), rgba(24,25,31,0) 72%);
  pointer-events: none;
}
.hero .wrap { position: relative; display: grid; gap: clamp(40px, 6vw, 64px); align-items: center; }
@media (min-width: 960px) { .hero .wrap { grid-template-columns: 1.05fr 0.95fr; } }
.hero h1 { font-size: clamp(2.2rem, 5vw, 3.4rem); letter-spacing: -0.035em; line-height: 1.05; }
.hero h1 em {
  font-style: normal;
  background: linear-gradient(transparent 62%, #e5e6e9 62%);   /* soft grey highlight */
}
.hero p { margin-top: 20px; font-size: 1.1rem; color: var(--text-soft); max-width: 52ch; }
.hero-btns { margin-top: 28px; display: flex; flex-wrap: wrap; gap: 12px; }

/* ---------- Discipline hub ---------- */
.hub { position: relative; max-width: 430px; margin-inline: auto; width: 100%; }
.hub-grid {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: clamp(18px, 4.5vw, 34px);   /* equal horizontal + vertical */
}
.hub-node {
  position: relative; display: flex; flex-direction: column; gap: 7px; padding: 16px;
  background: var(--bg); border: 1px solid var(--border); border-radius: var(--r);
  box-shadow: var(--sh-sm); cursor: pointer; text-align: left; font: inherit; color: var(--text);
  opacity: 0; transform: translateY(10px) scale(.96);
  animation: nodein .5s cubic-bezier(.2,.7,.3,1) forwards;
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}
.hub-node:nth-child(1) { animation-delay: .05s; }
.hub-node:nth-child(2) { animation-delay: .13s; }
.hub-node:nth-child(3) { animation-delay: .21s; }
.hub-node:nth-child(4) { animation-delay: .29s; }
@keyframes nodein { to { opacity: 1; transform: none; } }
.hub-node:hover { transform: translateY(-4px); box-shadow: var(--sh-md); border-color: var(--border-2); }
.hub-node .ic {
  width: 34px; height: 34px; display: grid; place-items: center;
  border-radius: 9px; background: var(--brand-soft); color: var(--brand);
}
.hub-node .ic svg { width: 19px; height: 19px; }
.hub-node b { font-family: var(--head); font-weight: 600; font-size: 0.94rem; letter-spacing: -0.02em; }
.hub-node span { font-size: 0.76rem; color: var(--text-mute); }
.hub-core {
  position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%);
  width: clamp(62px, 15vw, 84px); height: clamp(62px, 15vw, 84px);
  display: grid; place-items: center; border-radius: 50%;
  background: var(--bg); border: 1px solid var(--border-2); box-shadow: var(--sh-md); z-index: 3;
  pointer-events: none;   /* never intercept clicks meant for the tiles behind it */
}
.hub-core::after {
  content: ""; position: absolute; inset: -6px; border-radius: 50%;
  border: 1px solid var(--brand); opacity: .35; animation: pulse 3s ease-in-out infinite;
}
@keyframes pulse { 0%,100% { transform: scale(1); opacity: .35; } 50% { transform: scale(1.12); opacity: 0; } }
.hub-core img { width: 56%; height: auto; }
@media (prefers-reduced-motion: reduce) {
  .hub-node { animation: none; opacity: 1; transform: none; }
  .hub-core::after { animation: none; }
}

/* ---------- Formats marquee ---------- */
.marquee {
  border-top: 1px solid var(--border); border-bottom: 1px solid var(--border);
  background: var(--bg-soft); overflow: hidden; padding-block: 15px;
}
.marquee-track {
  display: flex; gap: 40px; width: max-content; animation: slide 26s linear infinite;
  font-family: var(--head); font-weight: 600; font-size: 0.98rem; color: var(--text-soft);
}
.marquee:hover .marquee-track { animation-play-state: paused; }
.marquee-track span::before { content: "·"; color: var(--brand); margin-right: 40px; }
@keyframes slide { to { transform: translateX(-50%); } }
@media (prefers-reduced-motion: reduce) { .marquee-track { animation: none; } }

/* ---------- Service slider (four boxes, side arrows) ---------- */
.slider {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 18px;
}
.slider-frame {
  grid-column: 2;
  overflow: hidden;
  border-radius: var(--r-lg);
}
.slider-track {
  display: flex;
  align-items: stretch;
  transition: transform .42s cubic-bezier(.4, 0, .2, 1);
}
@media (prefers-reduced-motion: reduce) { .slider-track { transition: none; } }

.slider-arrow {
  width: 48px; height: 48px; flex: none;
  display: grid; place-items: center;
  border: 1px solid var(--border-2); background: var(--bg);
  border-radius: 50%; color: var(--text); cursor: pointer;
  box-shadow: var(--sh-xs);
  transition: color .15s ease, border-color .15s ease, transform .15s ease, box-shadow .15s ease;
}
.slider-arrow:hover { color: var(--brand); border-color: var(--brand); transform: translateY(-1px); box-shadow: var(--sh-sm); }
.slider-arrow:active { transform: translateY(0); }
.slider-arrow svg { width: 22px; height: 22px; }
.slider-arrow[data-dir="-1"] { grid-column: 1; }
.slider-arrow[data-dir="1"]  { grid-column: 3; }

.slider-dots { grid-column: 1 / -1; display: flex; gap: 9px; justify-content: center; margin-top: 24px; }
.slider-dot {
  width: 8px; height: 8px; padding: 0; border: none; border-radius: 999px;
  background: var(--border-2); cursor: pointer; transition: background .15s ease, width .15s ease;
}
.slider-dot:hover { background: var(--text-mute); }
.slider-dot[aria-current="true"] { background: var(--accent); width: 26px; }

.svc-card {
  flex: 0 0 100%;
  min-width: 0;
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  background: var(--bg);
  box-shadow: var(--sh-sm);
  padding: clamp(24px, 4vw, 40px);
}

.svc-top { display: flex; align-items: baseline; gap: 14px; flex-wrap: wrap; margin-bottom: 8px; }
.svc-count {
  font-family: var(--head); font-weight: 600; font-size: 0.8rem;
  letter-spacing: 0.12em; color: var(--text-mute);
}
.svc-cols { display: grid; gap: 26px; margin-top: 22px; }
@media (min-width: 780px) { .svc-cols { grid-template-columns: 1fr 1fr; gap: 40px; } }

@media (max-width: 620px) {
  /* card goes full width; arrows move into a control bar beneath it */
  .slider { grid-template-columns: auto 1fr auto; column-gap: 10px; }
  .slider-frame { grid-column: 1 / -1; grid-row: 1; }
  .slider-arrow[data-dir="-1"] { grid-column: 1; grid-row: 2; margin-top: 24px; }
  .slider-dots { grid-column: 2; grid-row: 2; margin-top: 24px; align-self: center; }
  .slider-arrow[data-dir="1"] { grid-column: 3; grid-row: 2; margin-top: 24px; }
  .slider-arrow { width: 42px; height: 42px; }
}

.svc-h { font-family: var(--head); font-weight: 600; font-size: 1.4rem; letter-spacing: -0.028em; }
.svc-note { color: var(--text-soft); font-size: 1rem; margin-top: 4px; }
.svc-block + .svc-block { margin-top: 26px; }
.svc-block h4 {
  font-family: var(--font); font-size: 0.76rem; font-weight: 600; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--accent); margin-bottom: 12px;
}
.svc-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.svc-list li { position: relative; padding-left: 24px; font-size: 0.94rem; color: var(--text-soft); }
.svc-list li::before {
  content: ""; position: absolute; left: 2px; top: 7px; width: 12px; height: 7px;
  border-left: 2px solid var(--brand); border-bottom: 2px solid var(--brand); transform: rotate(-45deg);
}
.svc-steps { list-style: none; margin: 0; padding: 0; counter-reset: k; display: grid; gap: 14px; }
.svc-steps li {
  counter-increment: k; display: grid; grid-template-columns: 26px 1fr; gap: 12px;
  font-size: 0.94rem; color: var(--text-soft);
}
.svc-steps li::before {
  content: counter(k); display: grid; place-items: center; width: 24px; height: 24px;
  border-radius: 7px; background: var(--brand-soft); color: var(--brand-ink);
  font-family: var(--head); font-weight: 600; font-size: 0.8rem;
}

/* ---------- Workflow steps ---------- */
.steps { display: grid; gap: 20px; }
@media (min-width: 720px) { .steps { grid-template-columns: repeat(2, 1fr); gap: 26px 36px; } }
.step { display: grid; grid-template-columns: 36px 1fr; gap: 16px; align-items: start; }
.step .n {
  width: 36px; height: 36px; display: grid; place-items: center; border-radius: 10px;
  background: var(--brand-soft); color: var(--brand-ink);
  font-family: var(--head); font-weight: 600; font-size: 0.92rem;
}
.step h4 { font-size: 1.05rem; letter-spacing: -0.02em; }
.step p { margin-top: 5px; font-size: 0.95rem; color: var(--text-soft); }

/* ---------- Facts ---------- */
.facts { display: grid; gap: 18px; grid-template-columns: 1fr; }
@media (min-width: 720px) { .facts { grid-template-columns: repeat(3, 1fr); } }
.fact { border: 1px solid var(--border); border-radius: var(--r); padding: 22px; background: var(--bg); box-shadow: var(--sh-xs); }
.fact .ic { width: 30px; height: 30px; color: var(--brand); margin-bottom: 12px; }
.fact h4 { font-size: 1.02rem; letter-spacing: -0.02em; }
.fact p { margin-top: 6px; font-size: 0.92rem; color: var(--text-soft); }

/* ---------- Contact ---------- */
.contact-grid { display: grid; gap: clamp(30px, 5vw, 56px); }
@media (min-width: 860px) { .contact-grid { grid-template-columns: 1fr 1fr; } }
.form { display: grid; gap: 15px; }
@media (min-width: 560px) { .form .two { display: grid; grid-template-columns: 1fr 1fr; gap: 15px; } }
.field { display: grid; gap: 6px; }
.field label { font-size: 0.84rem; font-weight: 550; color: var(--text-soft); }
.field input, .field textarea {
  font: inherit; font-size: 0.95rem; color: var(--text); background: var(--bg);
  border: 1px solid var(--border-2); border-radius: var(--r-sm); padding: 11px 13px; width: 100%;
}
.field textarea { min-height: 130px; resize: vertical; }
.field input:focus, .field textarea:focus { outline: none; border-color: var(--brand); box-shadow: 0 0 0 3px var(--brand-soft); }
.form-status { font-size: 0.86rem; color: var(--text-mute); min-height: 1.2em; }
.contact-aside p { color: var(--text-soft); }
.contact-aside .line {
  display: flex; gap: 12px; align-items: baseline; padding: 13px 0;
  border-top: 1px solid var(--border); font-size: 0.95rem;
}
.contact-aside .line:last-child { border-bottom: 1px solid var(--border); }
.contact-aside .k { color: var(--text-mute); font-size: 0.82rem; min-width: 74px; }
/* all four values read the same; links only tint on hover */
.contact-aside .line a { color: inherit; text-decoration: underline; text-decoration-color: var(--border-2); text-underline-offset: 3px; }
.contact-aside .line a:hover { color: var(--accent); text-decoration-color: var(--accent); }

/* ---------- Footer ---------- */
.footer { border-top: 1px solid var(--border); background: var(--bg-soft); padding-block: 40px 30px; }
.footer .wrap { display: flex; flex-wrap: wrap; gap: 16px 28px; align-items: center; justify-content: space-between; }
.footer img { height: 40px; }
.footer nav { display: flex; gap: 6px 18px; flex-wrap: wrap; }
.footer nav a { font-size: 0.9rem; color: var(--text-soft); }
.footer nav a:hover { color: var(--text); }
.footer .fine { width: 100%; font-size: 0.82rem; color: var(--text-mute); }

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

.skip { position: absolute; left: -9999px; }
.skip:focus { left: 16px; top: 12px; z-index: 100; background: var(--text); color: #fff; padding: 10px 16px; border-radius: var(--r-sm); }