/* ============================================================
   GROUNDSOFT — style.css
   ============================================================ */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:         #0b0f1a;
  --bg-card:    #111827;
  --bg-card-ft: #0f2044;
  --accent:     #2563eb;
  --accent-lt:  #3b82f6;
  --accent-glow:#1d4ed8;
  --text:       #e2e8f0;
  --text-muted: #94a3b8;
  --border:     #1e293b;
  --white:      #ffffff;
  --radius:     12px;
  --transition: 0.25s ease;
  --font:       'Inter', system-ui, sans-serif;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ── BUTTONS ─────────────────────────────────── */
.btn {
  display: inline-block;
  padding: 13px 28px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: var(--transition);
  border: none;
}
.btn-primary {
  background: var(--accent);
  color: var(--white);
}
.btn-primary:hover { background: var(--accent-lt); transform: translateY(-2px); }

.btn-outline {
  background: transparent;
  color: var(--text);
  border: 1.5px solid var(--border);
}
.btn-outline:hover { border-color: var(--accent-lt); color: var(--accent-lt); transform: translateY(-2px); }

.btn-full { width: 100%; text-align: center; }

/* ── NAVBAR ──────────────────────────────────── */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: transparent;
  transition: background var(--transition), box-shadow var(--transition);
  padding: 18px 0;
}
.navbar.scrolled {
  background: rgba(11, 15, 26, 0.92);
  backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 var(--border);
  padding: 12px 0;
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo {
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: -0.5px;
  color: var(--white);
}
.logo span { color: var(--accent-lt); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}
.nav-links li a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: color var(--transition);
}
.nav-links li a:hover { color: var(--white); }

.btn-nav {
  background: var(--accent);
  color: var(--white) !important;
  padding: 9px 20px;
  border-radius: 8px;
  font-weight: 600 !important;
}
.btn-nav:hover { background: var(--accent-lt); color: var(--white) !important; }

.hamburger {
  display: none;
  background: none;
  border: none;
  color: var(--text);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 4px;
}

/* ── HERO ────────────────────────────────────── */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: radial-gradient(ellipse 80% 60% at 50% 0%, #1a3a6e 0%, var(--bg) 70%);
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 20% 80%, rgba(37,99,235,0.08) 0%, transparent 60%);
  pointer-events: none;
}
.hero-grid-lines {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(37,99,235,0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(37,99,235,0.07) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
  mask-image: radial-gradient(ellipse 100% 70% at 50% 50%, black 30%, transparent 100%);
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 700px;
  padding-top: 100px;
  padding-bottom: 80px;
}
.hero-eyebrow {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  color: var(--accent-lt);
  margin-bottom: 20px;
}
.hero h1 {
  font-size: clamp(2.4rem, 5vw, 3.8rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -1px;
  color: var(--white);
  margin-bottom: 24px;
}
.hero-sub {
  font-size: 1.1rem;
  color: var(--text-muted);
  max-width: 520px;
  margin-bottom: 40px;
}
.hero-cta { display: flex; gap: 16px; flex-wrap: wrap; }

/* ── SECTION SHARED ──────────────────────────── */
.section-label {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  color: var(--accent-lt);
  margin-bottom: 12px;
}
.section-title {
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  font-weight: 700;
  letter-spacing: -0.5px;
  color: var(--white);
  margin-bottom: 16px;
}
.section-sub {
  font-size: 1rem;
  color: var(--text-muted);
  max-width: 540px;
  margin-bottom: 56px;
}

/* ── SERVICES ────────────────────────────────── */
.services {
  padding: 100px 0;
  border-top: 1px solid var(--border);
}
.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 32px;
  transition: border-color var(--transition), transform var(--transition);
}
.card:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
}
.card-featured {
  background: var(--bg-card-ft);
  border-color: rgba(37,99,235,0.4);
  position: relative;
}
.card-featured::before {
  content: 'Core Service';
  position: absolute;
  top: -1px; left: 24px;
  background: var(--accent);
  color: var(--white);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  padding: 4px 12px;
  border-radius: 0 0 6px 6px;
}
.card-icon {
  width: 48px;
  height: 48px;
  margin-bottom: 24px;
}
.cloud-icon { color: #60a5fa; }
.industrial-icon { color: #34d399; }
.drone-icon { color: #a78bfa; }

.card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 12px;
}
.card p {
  font-size: 0.92rem;
  color: var(--text-muted);
  margin-bottom: 20px;
}
.card-list li {
  font-size: 0.88rem;
  color: var(--text-muted);
  padding: 5px 0;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 8px;
}
.card-list li::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-lt);
  flex-shrink: 0;
}
.card-list li:last-child { border-bottom: none; }

/* ── ABOUT ───────────────────────────────────── */
.about {
  padding: 100px 0;
  border-top: 1px solid var(--border);
  background: linear-gradient(180deg, var(--bg) 0%, #0d1528 100%);
}
.about-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}
.about-text p {
  font-size: 0.97rem;
  color: var(--text-muted);
  margin-bottom: 20px;
}
.about-text .btn { margin-top: 8px; }

.about-stats {
  display: flex;
  flex-direction: column;
  gap: 32px;
}
.stat {
  padding: 28px 32px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color var(--transition);
}
.stat:hover { border-color: var(--accent); }
.stat-num {
  display: block;
  font-size: 2.4rem;
  font-weight: 700;
  color: var(--white);
  letter-spacing: -1px;
  line-height: 1;
  margin-bottom: 6px;
}
.stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* ── CONTACT ─────────────────────────────────── */
.contact {
  padding: 100px 0;
  border-top: 1px solid var(--border);
}
.contact-inner {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 80px;
  align-items: start;
}
.contact-text p {
  font-size: 0.97rem;
  color: var(--text-muted);
  margin-bottom: 20px;
}
.contact-email a {
  color: var(--accent-lt);
  font-weight: 600;
  font-size: 1rem;
  transition: color var(--transition);
}
.contact-email a:hover { color: var(--white); }

.contact-form { display: flex; flex-direction: column; gap: 18px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form-group { display: flex; flex-direction: column; gap: 6px; }

label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
}
input, select, textarea {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 16px;
  color: var(--text);
  font-family: var(--font);
  font-size: 0.95rem;
  transition: border-color var(--transition);
  width: 100%;
}
input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--accent);
}
input::placeholder, textarea::placeholder { color: #475569; }
select option { background: var(--bg-card); }
textarea { resize: vertical; }

.form-notice {
  font-size: 0.9rem;
  color: #34d399;
  min-height: 20px;
  text-align: center;
}

/* ── FOOTER ──────────────────────────────────── */
.footer {
  border-top: 1px solid var(--border);
  padding: 48px 0;
  background: #070a12;
}
.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  text-align: center;
}
.footer-tagline {
  font-size: 0.85rem;
  color: var(--text-muted);
  letter-spacing: 0.5px;
}
.footer-copy {
  font-size: 0.8rem;
  color: #475569;
}

/* ── RESPONSIVE ──────────────────────────────── */
@media (max-width: 900px) {
  .cards { grid-template-columns: 1fr; }
  .about-inner { grid-template-columns: 1fr; gap: 48px; }
  .about-stats { flex-direction: row; flex-wrap: wrap; }
  .stat { flex: 1; min-width: 160px; }
  .contact-inner { grid-template-columns: 1fr; gap: 48px; }
}

@media (max-width: 640px) {
  .nav-links {
    display: none;
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
    position: absolute;
    top: 64px; left: 0; right: 0;
    background: rgba(11,15,26,0.97);
    padding: 24px;
    border-bottom: 1px solid var(--border);
  }
  .nav-links.open { display: flex; }
  .hamburger { display: block; }
  .form-row { grid-template-columns: 1fr; }
  .hero-cta { flex-direction: column; align-items: flex-start; }
}