/* ─── GME ROBOTICS · DESIGN SYSTEM ──────────────────────────────────────────
   Aesthetic: Clean tech-corporate. Photography-forward. Restrained.
   Reference: pudurobotics.com
   ──────────────────────────────────────────────────────────────────────────── */

/* ── RESET & TOKENS ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

:root {
  --navy:    #0A1628;
  --blue:    #0066FF;
  --blue-d:  #0052CC;
  --blue-lt: #EDF4FF;
  --white:   #FFFFFF;
  --bg:      #F2F3F5;
  --bg-warm: #F8F9FB;
  --gray-900:#111827;
  --gray-700:#374151;
  --gray-500:#6B7280;
  --gray-400:#9CA3AF;
  --gray-300:#D1D5DB;
  --gray-200:#E5E7EB;
  --gray-100:#F3F4F6;
  --text:    #111827;
  --text-s:  #6B7280;
  --border:  #E5E7EB;
  --r:       6px;
  --rl:      12px;
  --max:     1200px;
  --nav-h:   64px;
  --ff:      'Montserrat', system-ui, -apple-system, sans-serif;
}

body {
  font-family: var(--ff);
  font-size: 15px;
  line-height: 1.6;
  color: var(--text);
  background: var(--white);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; object-fit: cover; }
a { color: inherit; text-decoration: none; }

/* ── LAYOUT ── */
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 40px; }

/* ── BUTTONS ── */
.btn-primary {
  display: inline-flex; align-items: center; gap: 6px;
  background: var(--blue); color: var(--white);
  font-family: var(--ff); font-size: 14px; font-weight: 600;
  padding: 12px 28px; border-radius: 4px; border: none; cursor: pointer;
  transition: background .2s;
}
.btn-primary:hover { background: var(--blue-d); }

.btn-secondary {
  display: inline-flex; align-items: center; gap: 6px;
  background: transparent; color: var(--text);
  font-family: var(--ff); font-size: 14px; font-weight: 600;
  padding: 11px 28px; border-radius: 4px; border: 1.5px solid var(--border);
  cursor: pointer; transition: border-color .2s, color .2s;
}
.btn-secondary:hover { border-color: var(--blue); color: var(--blue); }

.btn-dark {
  display: inline-flex; align-items: center; gap: 6px;
  background: var(--navy); color: var(--white);
  font-family: var(--ff); font-size: 14px; font-weight: 600;
  padding: 12px 28px; border-radius: 4px; border: none; cursor: pointer;
  transition: background .2s;
}
.btn-dark:hover { background: #162a4a; }

.btn-white {
  display: inline-flex; align-items: center; gap: 6px;
  background: var(--white); color: var(--navy);
  font-family: var(--ff); font-size: 14px; font-weight: 600;
  padding: 12px 28px; border-radius: 4px; border: none; cursor: pointer;
  transition: opacity .2s;
}
.btn-white:hover { opacity: .9; }

/* ── NAVIGATION ── */
.site-nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 300;
  height: var(--nav-h);
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: var(--max); margin: 0 auto; padding: 0 40px;
  height: 100%; display: flex; align-items: center; justify-content: space-between;
}
.nav-logo { display: flex; align-items: center; gap: 8px; }
.nav-logo-text {
  font-size: 16px; font-weight: 700; color: var(--navy);
  letter-spacing: -.3px;
}
.nav-logo-text span { color: var(--blue); }
.nav-logo-divider {
  width: 1px; height: 20px; background: var(--gray-300); margin: 0 4px;
}
.nav-logo-sub {
  font-size: 10px; font-weight: 600; letter-spacing: 1px;
  text-transform: uppercase; color: var(--gray-400);
}
.nav-links { display: flex; align-items: center; gap: 32px; list-style: none; }
.nav-links a {
  font-size: 14px; font-weight: 500; color: rgba(0,0,0,.7);
  transition: color .2s;
}
.nav-links a:hover, .nav-links a.active { color: var(--blue); font-weight: 600; }
.nav-end { display: flex; align-items: center; gap: 10px; }
.hamburger {
  display: none; flex-direction: column; gap: 5px;
  background: none; border: none; cursor: pointer; padding: 4px;
}
.hamburger span { width: 20px; height: 1.5px; background: var(--navy); border-radius: 2px; display: block; }
.mob-menu {
  display: none; position: fixed; top: var(--nav-h); left: 0; right: 0;
  background: var(--white); border-bottom: 1px solid var(--border);
  padding: 24px 40px; flex-direction: column; gap: 20px; z-index: 299;
}
.mob-menu.open { display: flex; }
.mob-menu a { font-size: 15px; font-weight: 500; color: var(--gray-700); }
.mob-menu a:hover { color: var(--blue); }

/* ── SECTION UTILITIES ── */
.section-label {
  display: inline-block; font-size: 12px; font-weight: 700;
  letter-spacing: 1.5px; text-transform: uppercase; color: var(--blue);
  margin-bottom: 12px;
}
.section-title {
  font-size: clamp(28px, 4vw, 44px); font-weight: 700;
  line-height: 1.15; color: var(--navy); letter-spacing: -.5px;
  margin-bottom: 16px;
}
.section-desc {
  font-size: 16px; color: var(--text-s); line-height: 1.7;
  max-width: 560px;
}

/* ── REVEAL ANIMATION ── */
.rv { opacity: 0; transform: translateY(20px); transition: opacity .5s ease, transform .5s ease; }
.rv.on { opacity: 1; transform: translateY(0); }
.d1{transition-delay:.06s} .d2{transition-delay:.12s} .d3{transition-delay:.18s} .d4{transition-delay:.24s} .d5{transition-delay:.3s}

/* ── FOOTER ── */
.site-footer {
  background: var(--bg); padding: 56px 0 24px; border-top: 1px solid var(--border);
}
.ft-grid {
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 48px; margin-bottom: 40px;
}
.ft-brand-name {
  font-size: 16px; font-weight: 700; color: var(--navy);
  margin-bottom: 12px; letter-spacing: -.3px;
}
.ft-brand-name span { color: var(--blue); }
.ft-brand p {
  font-size: 13px; color: var(--gray-500); line-height: 1.7;
  max-width: 280px; margin-bottom: 20px;
}
.ft-col h5 {
  font-size: 11px; font-weight: 700; letter-spacing: 1.5px;
  text-transform: uppercase; color: var(--gray-400); margin-bottom: 16px;
}
.ft-col ul { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.ft-col ul li a {
  font-size: 14px; color: var(--gray-500); transition: color .2s;
}
.ft-col ul li a:hover { color: var(--blue); }
.ft-bottom {
  padding-top: 20px; border-top: 1px solid var(--gray-200);
  display: flex; justify-content: space-between; align-items: center;
  flex-wrap: wrap; gap: 8px;
}
.ft-bottom p { font-size: 12px; color: var(--gray-400); }
.ft-staff {
  font-size: 11px; color: var(--gray-300); letter-spacing: .5px;
  transition: color .25s;
}
.ft-staff:hover { color: var(--gray-500); }

/* ── RESPONSIVE ── */
@media (max-width: 1024px) {
  .wrap { padding: 0 24px; }
  .nav-inner { padding: 0 24px; }
  .ft-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}
@media (max-width: 768px) {
  .wrap { padding: 0 20px; }
  .nav-inner { padding: 0 20px; }
  .nav-links, .nav-end { display: none; }
  .hamburger { display: flex; }
  .mob-menu { padding: 24px 20px; }
  .ft-grid { grid-template-columns: 1fr; gap: 28px; }
  .ft-bottom { flex-direction: column; text-align: center; }
}