/* =========================================================
   VLASTIR ROBOTICS — Industrial / metallic + terracotta + brown
   ========================================================= */

:root {
  /* Metallic / gunmetal base */
  --steel-950: #0e1114;
  --steel-900: #14181c;
  --steel-850: #191e23;
  --steel-800: #1f252b;
  --steel-700: #2b333b;
  --steel-600: #3a434d;
  --steel-500: #59646f;
  --steel-400: #808b95;
  --steel-300: #aab2ba;
  --steel-200: #cfd5da;

  /* Warm paper (light sections) */
  --paper: #f2ece4;
  --paper-2: #e8e0d5;

  /* Terracotta + brown accents */
  --terra: #c15a34;
  --terra-bright: #d97141;
  --terra-soft: #e0a184;
  --brown: #6d4a33;
  --brown-deep: #4a3122;
  --brown-soft: #8a6247;

  /* Text */
  --ink: #12161a;
  --paper-ink: #2a221c;
  --on-dark: #e7ebee;
  --on-dark-dim: #9aa4ad;

  --line-dark: rgba(255, 255, 255, 0.08);
  --line-light: rgba(74, 49, 34, 0.14);

  --font-head: "Archivo", "Arial Narrow", system-ui, sans-serif;
  --font-body: "Inter", system-ui, -apple-system, sans-serif;

  --wrap: 1160px;
  --radius: 3px;
}

/* ---------- Reset ---------- */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-body);
  background: var(--steel-900);
  color: var(--on-dark);
  line-height: 1.6;
  overflow-x: hidden;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

/* ---------- Type ---------- */
h1, h2, h3, h4 {
  font-family: var(--font-head);
  font-weight: 800;
  line-height: 1.04;
  letter-spacing: -0.01em;
}
.eyebrow {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 0.72rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--terra-bright);
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
}
.eyebrow::before {
  content: "";
  width: 26px; height: 2px;
  background: var(--terra);
}

/* ---------- Layout helpers ---------- */
.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }
section { position: relative; }
.section-pad { padding: clamp(64px, 9vw, 130px) 0; }

/* Machined divider line */
.rule {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--steel-600), transparent);
  border: 0;
}

/* =========================================================
   HEADER
   ========================================================= */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(14, 17, 20, 0.82);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line-dark);
}
.nav {
  display: flex; align-items: center; justify-content: space-between;
  height: 72px;
}
.nav-links { display: flex; align-items: center; gap: 34px; }
.nav-links a {
  font-size: 0.9rem; font-weight: 500; color: var(--on-dark-dim);
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--on-dark); }
.nav-cta { display: flex; align-items: center; gap: 14px; }

/* Logo */
.logo { display: flex; align-items: center; gap: 11px; }
.logo .logo-mark { height: 36px; width: 36px; flex: 0 0 auto; }
.logo-word {
  font-family: var(--font-head); font-weight: 800; font-size: 1.28rem;
  letter-spacing: -0.01em; line-height: 0.95; color: var(--on-dark);
  display: flex; flex-direction: column;
}
.logo-word b {
  font-weight: 700; font-size: 0.6rem; letter-spacing: 0.42em;
  text-transform: uppercase; color: var(--terra-bright); margin-top: 2px;
}
.footer .logo-word, .light .logo-word { color: var(--on-dark); }
.light .logo-word { color: var(--paper-ink); }

/* Hamburger */
.nav-toggle {
  display: none; background: none; border: 1px solid var(--steel-600);
  width: 42px; height: 38px; border-radius: var(--radius); cursor: pointer;
  color: var(--on-dark);
}
.nav-toggle span, .nav-toggle span::before, .nav-toggle span::after {
  content: ""; display: block; width: 18px; height: 2px; background: currentColor;
  margin: 0 auto; position: relative; transition: 0.25s;
}
.nav-toggle span::before { position: absolute; top: -6px; }
.nav-toggle span::after { position: absolute; top: 6px; }

/* =========================================================
   BUTTONS
   ========================================================= */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-head); font-weight: 700; font-size: 0.9rem;
  letter-spacing: 0.02em;
  padding: 14px 26px; cursor: pointer; border: 1px solid transparent;
  clip-path: polygon(10px 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%, 0 10px);
  transition: transform 0.15s, background 0.2s, color 0.2s;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: var(--terra); color: #fff; }
.btn-primary:hover { background: var(--terra-bright); }
.btn-ghost { background: transparent; color: var(--on-dark); border-color: var(--steel-500); }
.btn-ghost:hover { border-color: var(--terra); color: var(--terra-bright); }
.btn-dark { background: var(--steel-800); color: var(--on-dark); border-color: var(--steel-600); }
.btn-dark:hover { background: var(--steel-700); }
.btn-sm { padding: 10px 18px; font-size: 0.82rem; }
.btn .arrow { transition: transform 0.2s; }
.btn:hover .arrow { transform: translateX(3px); }

/* =========================================================
   HERO
   ========================================================= */
.hero {
  position: relative;
  background:
    radial-gradient(1100px 520px at 78% -10%, rgba(193, 90, 52, 0.16), transparent 60%),
    linear-gradient(180deg, var(--steel-950), var(--steel-900) 60%, var(--steel-850));
  overflow: hidden;
}
/* Blueprint grid */
.hero::before {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(var(--line-dark) 1px, transparent 1px),
    linear-gradient(90deg, var(--line-dark) 1px, transparent 1px);
  background-size: 46px 46px;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 30%, #000 40%, transparent 100%);
  pointer-events: none;
}
.hero-inner {
  position: relative; z-index: 2;
  display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 48px; align-items: center;
  padding: clamp(56px, 8vw, 104px) 0 clamp(64px, 8vw, 110px);
}
.hero h1 {
  font-size: clamp(2.6rem, 5.6vw, 4.6rem);
  margin: 22px 0 0;
}
.hero h1 .accent { color: var(--terra-bright); }
.hero-sub {
  margin-top: 24px; font-size: clamp(1.05rem, 1.6vw, 1.22rem);
  color: var(--on-dark-dim); max-width: 34em;
}
.hero-actions { margin-top: 38px; display: flex; flex-wrap: wrap; gap: 14px; }
.hero-tags {
  margin-top: 40px; display: flex; flex-wrap: wrap; gap: 10px 10px;
}
.chip {
  font-size: 0.78rem; font-weight: 600; letter-spacing: 0.04em;
  color: var(--steel-300); border: 1px solid var(--steel-700);
  padding: 7px 13px; border-radius: 100px; background: rgba(255,255,255,0.02);
}
.chip b { color: var(--terra-soft); font-weight: 700; }

/* =========================================================
   STATS STRIP
   ========================================================= */
.stats {
  background: var(--brown-deep);
  background: linear-gradient(180deg, var(--brown-deep), #3c281b);
  border-top: 1px solid rgba(255,255,255,0.05);
  border-bottom: 1px solid rgba(0,0,0,0.3);
}
.stats-grid {
  display: grid; grid-template-columns: repeat(5, 1fr);
}
.stat {
  padding: 40px 22px; text-align: center;
  border-right: 1px solid rgba(255,255,255,0.07);
}
.stat:last-child { border-right: 0; }
.stat .num {
  font-family: var(--font-head); font-weight: 800;
  font-size: clamp(1.9rem, 3vw, 2.7rem); color: var(--terra-soft);
  line-height: 1;
}
.stat .lbl { margin-top: 12px; font-size: 0.82rem; color: rgba(255,255,255,0.62); }

/* =========================================================
   GENERIC SECTION HEADS
   ========================================================= */
.section-head { max-width: 720px; margin-bottom: 56px; }
.section-head h2 { font-size: clamp(2rem, 3.6vw, 3rem); margin-top: 18px; }
.section-head p { margin-top: 18px; color: var(--on-dark-dim); font-size: 1.06rem; }

/* Light section variant */
.light { background: var(--paper); color: var(--paper-ink); }
.light .section-head p { color: #6a5d50; }
.light .eyebrow { color: var(--terra); }
.light .rule { background: linear-gradient(90deg, transparent, rgba(0,0,0,0.15), transparent); }

/* =========================================================
   PROBLEM CARDS
   ========================================================= */
.card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.card {
  background: var(--steel-850); border: 1px solid var(--steel-700);
  padding: 32px 28px; border-radius: var(--radius);
  position: relative; overflow: hidden;
  transition: transform 0.2s, border-color 0.2s;
}
.card::after {
  content: ""; position: absolute; top: 0; left: 0; width: 100%; height: 3px;
  background: linear-gradient(90deg, var(--terra), transparent);
  transform: scaleX(0); transform-origin: left; transition: transform 0.3s;
}
.card:hover { transform: translateY(-4px); border-color: var(--steel-500); }
.card:hover::after { transform: scaleX(1); }
.card .ic { width: 46px; height: 46px; margin-bottom: 20px; color: var(--terra-bright); }
.card h3 { font-size: 1.24rem; margin-bottom: 10px; }
.card p { color: var(--on-dark-dim); font-size: 0.96rem; }
.light .card { background: #fff; border-color: var(--line-light); }
.light .card p { color: #6a5d50; }
.light .card .ic { color: var(--terra); }

/* =========================================================
   HOW IT WORKS (steps)
   ========================================================= */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; counter-reset: step; }
.step { padding: 34px 30px; position: relative; }
.step:not(:last-child) { border-right: 1px solid var(--line-light); }
.step .step-no {
  counter-increment: step;
  font-family: var(--font-head); font-weight: 800; font-size: 3.2rem;
  color: var(--terra); opacity: 0.28; line-height: 1;
}
.step .step-no::before { content: "0" counter(step); }
.step h3 { font-size: 1.3rem; margin: 8px 0 12px; }
.step p { color: #6a5d50; font-size: 0.98rem; }

/* =========================================================
   SOLUTION / SPLIT
   ========================================================= */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.split h2 { font-size: clamp(1.9rem, 3.2vw, 2.7rem); margin: 16px 0 20px; }
.feature-list { margin-top: 26px; display: grid; gap: 18px; }
.feature-list li { display: flex; gap: 15px; align-items: flex-start; }
.feature-list .tick {
  flex: 0 0 auto; width: 26px; height: 26px; margin-top: 2px;
  display: grid; place-items: center; background: rgba(193,90,52,0.15);
  color: var(--terra-bright); border-radius: 3px; font-weight: 800;
}
.feature-list .txt b { display: block; font-family: var(--font-head); font-size: 1.02rem; margin-bottom: 2px; }
.feature-list .txt span { color: var(--on-dark-dim); font-size: 0.95rem; }

/* Illustration frame */
.illus-frame {
  border: 1px solid var(--steel-700); border-radius: var(--radius);
  background: radial-gradient(600px 300px at 30% 20%, rgba(193,90,52,0.12), transparent),
              linear-gradient(160deg, var(--steel-850), var(--steel-900));
  padding: 30px; position: relative;
}
.illus-frame .corner-tag {
  position: absolute; top: 14px; right: 14px;
  font-family: var(--font-head); font-size: 0.68rem; letter-spacing: 0.2em;
  color: var(--steel-400);
}

/* =========================================================
   PRICING / OFFER
   ========================================================= */
.offer-card {
  max-width: 560px; margin: 0 auto; text-align: center;
  background: linear-gradient(165deg, var(--steel-800), var(--steel-850));
  border: 1px solid var(--steel-600);
  padding: 54px 44px; border-radius: var(--radius); position: relative;
  clip-path: polygon(18px 0, 100% 0, 100% calc(100% - 18px), calc(100% - 18px) 100%, 0 100%, 0 18px);
}
.offer-card .badge {
  display: inline-block; font-family: var(--font-head); font-size: 0.72rem;
  letter-spacing: 0.2em; text-transform: uppercase; color: var(--terra-bright);
  border: 1px solid var(--terra); padding: 6px 14px; border-radius: 100px; margin-bottom: 22px;
}
.offer-card .price {
  font-family: var(--font-head); font-weight: 800; font-size: 4.4rem; line-height: 1;
}
.offer-card .price span { font-size: 1.2rem; color: var(--on-dark-dim); font-weight: 600; }
.offer-card .price-sub { color: var(--on-dark-dim); margin-top: 10px; }
.offer-inc { text-align: left; margin: 32px auto 34px; max-width: 340px; display: grid; gap: 12px; }
.offer-inc li { display: flex; gap: 12px; color: var(--steel-200); font-size: 0.96rem; }
.offer-inc li::before { content: "→"; color: var(--terra-bright); font-weight: 700; }

/* =========================================================
   MARKET
   ========================================================= */
.market-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.market-cell {
  border: 1px solid var(--line-light); border-radius: var(--radius);
  padding: 28px 24px; background: #fff;
}
.market-cell .mnum { font-family: var(--font-head); font-weight: 800; font-size: 2.2rem; color: var(--brown); }
.market-cell .mlbl { margin-top: 8px; font-size: 0.9rem; color: #6a5d50; }
.industries { margin-top: 42px; display: flex; flex-wrap: wrap; gap: 12px; }
.industries .tag {
  font-family: var(--font-head); font-size: 0.86rem; font-weight: 600;
  padding: 10px 18px; border: 1px solid var(--line-light); border-radius: 100px;
  color: var(--paper-ink); background: #fff;
}
.industries .tag b { color: var(--terra); }

/* =========================================================
   TEAM
   ========================================================= */
.team-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.member {
  background: var(--steel-850); border: 1px solid var(--steel-700);
  border-radius: var(--radius); padding: 34px 32px; display: flex; gap: 22px;
}
.member .avatar {
  flex: 0 0 auto; width: 76px; height: 76px; border-radius: var(--radius);
  background: linear-gradient(150deg, var(--terra), var(--brown));
  display: grid; place-items: center;
  font-family: var(--font-head); font-weight: 800; font-size: 1.7rem; color: #fff;
}
.member h3 { font-size: 1.3rem; }
.member .role { color: var(--terra-bright); font-family: var(--font-head); font-size: 0.82rem; letter-spacing: 0.14em; text-transform: uppercase; margin: 4px 0 12px; }
.member ul { display: grid; gap: 7px; margin-bottom: 14px; }
.member ul li { color: var(--on-dark-dim); font-size: 0.92rem; padding-left: 16px; position: relative; }
.member ul li::before { content: "▸"; position: absolute; left: 0; color: var(--terra); }
.member .li-link { font-size: 0.85rem; color: var(--steel-300); display: inline-flex; align-items: center; gap: 6px; }
.member .li-link:hover { color: var(--terra-bright); }

.mentors { margin-top: 40px; text-align: center; }
.mentors p { color: var(--on-dark-dim); font-size: 0.95rem; margin-bottom: 16px; }
.mentors .m-row { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; }
.mentors .m-row .chip { border-color: var(--steel-600); }

/* =========================================================
   CTA BANNER
   ========================================================= */
.cta-banner {
  background:
    radial-gradient(700px 400px at 80% 120%, rgba(193,90,52,0.28), transparent 60%),
    linear-gradient(120deg, var(--brown-deep), var(--steel-900));
  border-top: 1px solid var(--line-dark);
}
.cta-banner .wrap { text-align: center; }
.cta-banner h2 { font-size: clamp(2rem, 4vw, 3.2rem); }
.cta-banner p { color: var(--on-dark-dim); max-width: 40em; margin: 18px auto 34px; font-size: 1.08rem; }
.cta-banner .hero-actions { justify-content: center; }

/* =========================================================
   FOOTER
   ========================================================= */
.footer { background: var(--steel-950); border-top: 1px solid var(--line-dark); padding: 56px 0 34px; }
.footer-top { display: flex; justify-content: space-between; gap: 40px; flex-wrap: wrap; }
.footer-top .tagline { color: var(--on-dark-dim); max-width: 26em; margin-top: 16px; font-size: 0.95rem; }
.footer-cols { display: flex; gap: 64px; flex-wrap: wrap; }
.footer-col h4 { font-size: 0.78rem; letter-spacing: 0.18em; text-transform: uppercase; color: var(--steel-400); margin-bottom: 14px; }
.footer-col a, .footer-col p { display: block; color: var(--on-dark-dim); font-size: 0.92rem; margin-bottom: 9px; }
.footer-col a:hover { color: var(--terra-bright); }
.footer-bottom {
  margin-top: 44px; padding-top: 22px; border-top: 1px solid var(--line-dark);
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px;
  color: var(--steel-500); font-size: 0.82rem;
}

/* =========================================================
   CONTACT PAGE
   ========================================================= */
.page-hero {
  background:
    radial-gradient(800px 400px at 70% -20%, rgba(193,90,52,0.16), transparent 60%),
    linear-gradient(180deg, var(--steel-950), var(--steel-900));
  padding: clamp(60px, 8vw, 96px) 0 clamp(40px, 6vw, 64px);
  border-bottom: 1px solid var(--line-dark);
}
.page-hero h1 { font-size: clamp(2.4rem, 5vw, 3.8rem); margin-top: 18px; }
.page-hero p { color: var(--on-dark-dim); font-size: 1.1rem; max-width: 40em; margin-top: 18px; }

.track-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
.track {
  border: 1px solid var(--steel-700); border-radius: var(--radius);
  background: var(--steel-850); padding: 40px 36px; position: relative; overflow: hidden;
}
.track.industrial { border-top: 3px solid var(--terra); }
.track.investor { border-top: 3px solid var(--brown-soft); }
.track .track-ic { width: 52px; height: 52px; color: var(--terra-bright); margin-bottom: 20px; }
.track.investor .track-ic { color: var(--terra-soft); }
.track h2 { font-size: 1.7rem; }
.track .track-lead { color: var(--on-dark-dim); margin: 14px 0 8px; font-size: 0.98rem; }
.track .route {
  font-size: 0.82rem; color: var(--steel-400); margin-bottom: 26px;
  display: inline-flex; align-items: center; gap: 8px;
}
.track .route b { color: var(--terra-soft); font-weight: 600; }

/* Forms */
.field { margin-bottom: 18px; }
.field label {
  display: block; font-family: var(--font-head); font-size: 0.78rem;
  letter-spacing: 0.1em; text-transform: uppercase; color: var(--steel-300); margin-bottom: 7px;
}
.field input, .field textarea, .field select {
  width: 100%; background: var(--steel-900); border: 1px solid var(--steel-600);
  color: var(--on-dark); padding: 12px 14px; border-radius: var(--radius);
  font-family: var(--font-body); font-size: 0.95rem; transition: border-color 0.2s;
}
.field input:focus, .field textarea:focus, .field select:focus {
  outline: none; border-color: var(--terra);
}
.field textarea { resize: vertical; min-height: 110px; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.form-note { font-size: 0.78rem; color: var(--steel-500); margin-top: 14px; }
.track .btn { width: 100%; justify-content: center; margin-top: 6px; }

/* Direct contact cards */
.direct-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.direct {
  background: #fff; border: 1px solid var(--line-light); border-radius: var(--radius);
  padding: 30px; display: flex; gap: 20px; align-items: center;
}
.direct .avatar {
  flex: 0 0 auto; width: 64px; height: 64px; border-radius: var(--radius);
  background: linear-gradient(150deg, var(--terra), var(--brown));
  display: grid; place-items: center; font-family: var(--font-head);
  font-weight: 800; font-size: 1.4rem; color: #fff;
}
.direct h3 { font-size: 1.15rem; color: var(--ink); }
.direct .role { color: var(--terra); font-size: 0.78rem; font-family: var(--font-head); letter-spacing: 0.12em; text-transform: uppercase; margin: 3px 0 10px; }
.direct a { display: block; font-size: 0.9rem; color: #6a5d50; margin-bottom: 4px; }
.direct a:hover { color: var(--terra); }

/* =========================================================
   RESPONSIVE
   ========================================================= */
@media (max-width: 900px) {
  .nav-links, .nav-cta .btn:not(.nav-primary) { display: none; }
  .nav-toggle { display: block; }
  .nav.open .nav-links {
    display: flex; flex-direction: column; position: absolute; top: 72px; left: 0; right: 0;
    background: var(--steel-900); border-bottom: 1px solid var(--line-dark);
    padding: 22px 24px; gap: 18px; align-items: flex-start;
  }
  .hero-inner, .split { grid-template-columns: 1fr; }
  .hero-illus { max-width: 420px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .stat:nth-child(2n) { border-right: 0; }
  .card-grid, .steps, .team-grid, .track-grid, .direct-grid, .market-grid { grid-template-columns: 1fr; }
  .step:not(:last-child) { border-right: 0; border-bottom: 1px solid var(--line-light); }
  .market-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 560px) {
  .stats-grid, .market-grid { grid-template-columns: 1fr; }
  .stat { border-right: 0; border-bottom: 1px solid rgba(255,255,255,0.07); }
  .field-row { grid-template-columns: 1fr; }
  .member { flex-direction: column; }
}