/* ============================================================
   C4-Technology — Stylesheet
   ============================================================ */

/* ---------- Reset & Base ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --c-bg:        #0a0d0a;
  --c-surface:   #0f1410;
  --c-border:    #1c2a1c;
  --c-muted:     #8a9e8a;
  --c-text:      #d8e8d8;
  --c-heading:   #ffffff;
  --c-primary:   #6DC135;
  --c-primary-d: #55A025;
  --c-accent:    #9FE064;
  --c-charcoal:  #3D4949;
  --c-green:     #6DC135;
  --radius:      12px;
  --radius-sm:   8px;
  --transition:  0.2s ease;
  --max-w:       1140px;
  --font:        'Segoe UI', system-ui, -apple-system, sans-serif;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--c-bg);
  color: var(--c-text);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

/* ---------- Utilities ---------- */
.container { max-width: var(--max-w); margin: 0 auto; padding: 0 24px; }
.section    { padding: 96px 0; }

.section-eyebrow {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--c-primary);
  margin-bottom: 12px;
}
.section-title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  color: var(--c-heading);
  line-height: 1.2;
  margin-bottom: 16px;
}
.section-sub {
  color: var(--c-muted);
  font-size: 1.0625rem;
  max-width: 560px;
  margin-bottom: 56px;
}

.gradient-text {
  background: linear-gradient(135deg, var(--c-primary), var(--c-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 24px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.9375rem;
  text-decoration: none;
  transition: var(--transition);
  cursor: pointer;
  border: none;
  white-space: nowrap;
}
.btn-primary {
  background: var(--c-primary);
  color: #fff;
}
.btn-primary:hover { background: var(--c-primary-d); transform: translateY(-1px); }
.btn-ghost {
  background: transparent;
  color: var(--c-text);
  border: 1px solid var(--c-border);
}
.btn-ghost:hover { border-color: var(--c-primary); color: var(--c-primary); }
.btn-sm { padding: 8px 18px; font-size: 0.875rem; }
.btn-full { width: 100%; justify-content: center; }

/* ---------- NAV ---------- */
.nav-wrapper {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(10, 13, 10, 0.88);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--c-border);
}
.nav {
  display: flex;
  align-items: center;
  height: 68px;
  gap: 32px;
}
.nav-logo {
  display: flex;
  align-items: center;
  text-decoration: none;
  flex-shrink: 0;
}
.nav-logo img {
  height: 40px;
  width: auto;
  border-radius: 6px;
  background: #ffffff;
  padding: 4px 8px;
}
/* fallback text logo if image missing */
.nav-logo-text {
  font-size: 1.3rem;
  font-weight: 900;
  letter-spacing: -0.02em;
  color: var(--c-heading);
}
.nav-logo-text .c4   { color: var(--c-primary); }
.nav-logo-text .tech { color: #a0b8b8; margin-left: 3px; }
.nav-links {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 24px;
  margin-left: auto;
}
.nav-links a {
  color: var(--c-muted);
  text-decoration: none;
  font-size: 0.9375rem;
  transition: color var(--transition);
}
.nav-links a:not(.btn):hover { color: var(--c-heading); }
.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--c-heading);
  font-size: 1.5rem;
  cursor: pointer;
  margin-left: auto;
}

/* ---------- HERO ---------- */
.hero {
  position: relative;
  padding: 160px 0 100px;
  overflow: hidden;
}
.hero-glow {
  position: absolute;
  top: -20%;
  left: 50%;
  transform: translateX(-50%);
  width: 900px;
  height: 600px;
  background: radial-gradient(ellipse at center,
    rgba(109, 193, 53, 0.18) 0%,
    rgba(159, 224, 100, 0.07) 45%,
    transparent 70%);
  pointer-events: none;
}
.hero-eyebrow {
  display: inline-block;
  background: rgba(109, 193, 53, 0.1);
  border: 1px solid rgba(109, 193, 53, 0.3);
  color: var(--c-primary);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 5px 14px;
  border-radius: 999px;
  margin-bottom: 28px;
}
.hero-content { position: relative; z-index: 1; max-width: 760px; }
.hero-content h1 {
  font-size: clamp(2.25rem, 6vw, 3.75rem);
  font-weight: 800;
  color: var(--c-heading);
  line-height: 1.1;
  margin-bottom: 24px;
  letter-spacing: -0.02em;
}
.hero-sub {
  font-size: 1.125rem;
  color: var(--c-muted);
  max-width: 580px;
  margin-bottom: 40px;
}
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }

/* ---------- SERVICES / CARDS ---------- */
.services { background: var(--c-surface); }
.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.card {
  position: relative;
  background: var(--c-bg);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 32px;
  transition: border-color var(--transition), transform var(--transition);
}
.card:hover { border-color: var(--c-primary); transform: translateY(-4px); }
.card.featured {
  border-color: var(--c-primary);
  background: linear-gradient(160deg, rgba(109,193,53,0.07) 0%, var(--c-bg) 100%);
}
.card-badge {
  position: absolute;
  top: -13px;
  left: 24px;
  background: var(--c-primary);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 3px 12px;
  border-radius: 999px;
}
.card-icon {
  width: 52px; height: 52px;
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 20px;
}
.card-icon svg { width: 26px; height: 26px; }
.card-icon.cloud      { background: rgba(109,193,53,0.14);  color: var(--c-primary); }
.card-icon.ai         { background: rgba(6,182,212,0.12);   color: #06b6d4; }
.card-icon.automation { background: rgba(61,73,73,0.35);    color: #a0b8b8; }

.card h3 {
  font-size: 1.1875rem;
  font-weight: 700;
  color: var(--c-heading);
  margin-bottom: 12px;
}
.card p { color: var(--c-muted); font-size: 0.9375rem; margin-bottom: 20px; }
.card-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.card-list li {
  font-size: 0.875rem;
  color: var(--c-text);
  padding-left: 18px;
  position: relative;
}
.card-list li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--c-primary);
  font-size: 0.75rem;
  top: 2px;
}

/* ---------- ABOUT ---------- */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}
.stat-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.stat {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.stat-num {
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--c-heading);
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, var(--c-primary), var(--c-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.stat-label { font-size: 0.875rem; color: var(--c-muted); }
.about-text p { color: var(--c-muted); margin-bottom: 20px; }
.about-text .btn { margin-top: 8px; }

/* ---------- WHY US ---------- */
.why-us { background: var(--c-surface); }
.pillars {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  margin-top: 56px;
}
.pillar { text-align: center; }
.pillar-icon {
  font-size: 1.5rem;
  color: var(--c-primary);
  margin-bottom: 16px;
}
.pillar h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--c-heading);
  margin-bottom: 10px;
}
.pillar p { font-size: 0.9rem; color: var(--c-muted); }

/* ---------- CONTACT ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 80px;
  align-items: start;
}
.contact-info p { color: var(--c-muted); margin-bottom: 32px; }
.contact-details { display: flex; flex-direction: column; gap: 16px; }
.contact-item {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.9375rem;
  color: var(--c-text);
}
.contact-icon { font-size: 1.1rem; color: var(--c-primary); }

/* Form */
.contact-form {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 40px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group label { font-size: 0.875rem; font-weight: 600; color: var(--c-text); }
.form-group input,
.form-group select,
.form-group textarea {
  background: var(--c-bg);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  color: var(--c-text);
  font-family: var(--font);
  font-size: 0.9375rem;
  transition: border-color var(--transition);
  outline: none;
  resize: vertical;
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: #4a5568; }
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus { border-color: var(--c-primary); }
.form-group select option { background: var(--c-bg); }

.form-note {
  text-align: center;
  font-size: 0.875rem;
  color: var(--c-green);
  min-height: 20px;
}

/* ---------- FOOTER ---------- */
.footer {
  background: var(--c-surface);
  border-top: 1px solid var(--c-border);
  padding: 40px 0;
}
.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  text-align: center;
}
.footer-inner .nav-logo img { height: 36px; padding: 3px 7px; }
.footer-tagline { font-size: 0.875rem; color: var(--c-primary); letter-spacing: 0.1em; }
.footer-copy { font-size: 0.8125rem; color: var(--c-muted); }

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  .cards { grid-template-columns: 1fr; max-width: 520px; margin: 0 auto; }
  .about-grid { grid-template-columns: 1fr; gap: 48px; }
  .pillars { grid-template-columns: 1fr 1fr; gap: 24px; }
  .contact-grid { grid-template-columns: 1fr; gap: 48px; }
}

@media (max-width: 640px) {
  .nav-toggle { display: block; }
  .nav-links {
    display: none;
    position: absolute;
    top: 64px; left: 0; right: 0;
    background: var(--c-surface);
    border-bottom: 1px solid var(--c-border);
    flex-direction: column;
    padding: 20px 24px;
    gap: 16px;
    align-items: flex-start;
  }
  .nav-links.open { display: flex; }
  .nav { position: relative; }

  .section { padding: 64px 0; }
  .hero { padding: 120px 0 64px; }
  .form-row { grid-template-columns: 1fr; }
  .contact-form { padding: 24px; }
  .pillars { grid-template-columns: 1fr; }
  .stat-grid { grid-template-columns: 1fr 1fr; }
}