/* ===========================
   THINKTECH SOFTWARE — Global Styles
   Aesthetic: Dark, premium, tech-forward
   Fonts: Syne (display) + DM Sans (body)
=========================== */

@import url('https://fonts.googleapis.com/css2?family=Syne:wght@400;600;700;800&family=DM+Sans:ital,opsz,wght@0,9..40,300;0,9..40,400;0,9..40,500;1,9..40,300&display=swap');

:root {
  --bg:        #0a0d12;
  --bg2:       #0f1318;
  --bg3:       #161b23;
  --border:    rgba(255,255,255,0.07);
  --accent:    #00e5ff;
  --accent2:   #7b61ff;
  --accent3:   #00ff99;
  --text:      #e8edf3;
  --muted:     #7a8799;
  --card-bg:   rgba(22,27,35,0.85);
  --radius:    14px;
  --shadow:    0 24px 64px rgba(0,0,0,0.5);
  --glow:      0 0 40px rgba(0,229,255,0.15);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'DM Sans', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  font-size: 16px;
  overflow-x: hidden;
}

/* ── NOISE TEXTURE overlay ── */
body::before {
  content: '';
  position: fixed; inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.04'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 9999;
  opacity: 0.4;
}

/* ── TYPOGRAPHY ── */
h1, h2, h3, h4, h5 {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

a { color: inherit; text-decoration: none; }

/* ── UTILITY ── */
.container { max-width: 1180px; margin: 0 auto; padding: 0 28px; }
.accent-text { color: var(--accent); }
.accent2-text { color: var(--accent2); }

.tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 5px 14px;
  border-radius: 999px;
  border: 1px solid var(--accent);
  color: var(--accent);
  margin-bottom: 18px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: var(--radius);
  font-family: 'DM Sans', sans-serif;
  font-weight: 500;
  font-size: 15px;
  cursor: pointer;
  transition: all 0.25s;
  border: none;
  text-decoration: none;
}

.btn-primary {
  background: var(--accent);
  color: #0a0d12;
  box-shadow: 0 0 28px rgba(0,229,255,0.25);
}
.btn-primary:hover {
  background: #33eaff;
  box-shadow: 0 0 40px rgba(0,229,255,0.45);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
}

/* ── NAVBAR ── */
.navbar {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 18px 0;
  transition: background 0.3s, box-shadow 0.3s;
  border-bottom: 1px solid transparent;
}
.navbar.scrolled {
  background: rgba(10,13,18,0.92);
  backdrop-filter: blur(16px);
  border-bottom-color: var(--border);
  box-shadow: 0 4px 32px rgba(0,0,0,0.4);
}
.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo {
  font-family: 'Syne', sans-serif;
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.03em;
  display: flex;
  align-items: center;
  gap: 10px;
}
.logo-icon {
  width: 34px; height: 34px;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  font-size: 16px;
}
.logo span { color: var(--accent); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 36px;
  list-style: none;
}
.nav-links a {
  font-size: 14px;
  font-weight: 500;
  color: var(--muted);
  transition: color 0.2s;
  position: relative;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0; right: 0;
  height: 1px;
  background: var(--accent);
  transform: scaleX(0);
  transition: transform 0.2s;
}
.nav-links a:hover, .nav-links a.active {
  color: var(--text);
}
.nav-links a:hover::after, .nav-links a.active::after {
  transform: scaleX(1);
}

.nav-cta { padding: 10px 22px; font-size: 14px; }

/* ── HAMBURGER (mobile) ── */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 4px;
}
.hamburger span {
  display: block;
  width: 24px; height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all 0.3s;
}

/* ── MOBILE NAV ── */
.mobile-nav {
  position: fixed;
  inset: 0;
  background: var(--bg);
  z-index: 99;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 32px;
  /* hidden by default */
  opacity: 0;
  pointer-events: none;
  transform: translateY(-12px);
  transition: opacity 0.25s ease, transform 0.25s ease;
}
.mobile-nav.open {
  opacity: 1;
  pointer-events: all;
  transform: translateY(0);
}
.mobile-nav a {
  font-family: 'Syne', sans-serif;
  font-size: 28px;
  font-weight: 700;
  color: var(--muted);
  transition: color 0.2s;
  text-decoration: none;
}
.mobile-nav a:hover { color: var(--accent); }
.mobile-nav-close {
  position: absolute;
  top: 24px; right: 28px;
  background: none; border: none;
  color: var(--text);
  font-size: 28px;
  cursor: pointer;
  line-height: 1;
  padding: 4px 8px;
}

/* ── SECTION BASE ── */
section { padding: 100px 0; }

.section-header { text-align: center; margin-bottom: 64px; }
.section-header h2 { font-size: clamp(32px, 4vw, 52px); margin-bottom: 16px; }
.section-header p { color: var(--muted); font-size: 18px; max-width: 560px; margin: 0 auto; }

/* ── GRID ── */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }

/* ── CARD ── */
.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  transition: all 0.3s;
  position: relative;
  overflow: hidden;
}
.card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(0,229,255,0.03), transparent);
  opacity: 0;
  transition: opacity 0.3s;
}
.card:hover {
  border-color: rgba(0,229,255,0.25);
  box-shadow: var(--glow);
  transform: translateY(-4px);
}
.card:hover::before { opacity: 1; }

.card-icon {
  width: 52px; height: 52px;
  background: rgba(0,229,255,0.08);
  border: 1px solid rgba(0,229,255,0.15);
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  font-size: 22px;
  margin-bottom: 20px;
}
.card h3 { font-size: 20px; margin-bottom: 10px; }
.card p { color: var(--muted); font-size: 15px; line-height: 1.65; }

/* ── FOOTER ── */
.footer {
  background: var(--bg2);
  border-top: 1px solid var(--border);
  padding: 60px 0 32px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}
.footer-brand p { color: var(--muted); font-size: 15px; margin: 16px 0 24px; max-width: 280px; }
.footer-col h4 {
  font-family: 'Syne', sans-serif;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 16px;
}
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.footer-col a { color: var(--muted); font-size: 14px; transition: color 0.2s; }
.footer-col a:hover { color: var(--accent); }
.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 28px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--muted);
  font-size: 13px;
}

/* ── GLOW DIVIDER ── */
.glow-line {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0.3;
  margin: 0;
}

/* ── SCROLL ANIMATIONS ── */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}
.fade-up.delay-1 { transition-delay: 0.1s; }
.fade-up.delay-2 { transition-delay: 0.2s; }
.fade-up.delay-3 { transition-delay: 0.3s; }
.fade-up.delay-4 { transition-delay: 0.4s; }
.fade-up.delay-5 { transition-delay: 0.5s; }

/* ── SOCIAL ICON BUTTONS ── */
.social-icon-btn {
  width: 36px; height: 36px;
  border: 1px solid var(--border);
  border-radius: 8px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--muted);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  transition: border-color 0.2s, color 0.2s, transform 0.2s;
  flex-shrink: 0;
}
.social-icon-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
}

/* ── RESPONSIVE ── */
@media (max-width: 1200px) {
  .container { padding: 0 20px; }
}

@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}

@media (max-width: 768px) {
  /* Nav */
  .nav-links, .nav-cta { display: none !important; }
  .hamburger { display: flex; }

  /* Grids */
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }

  /* Footer */
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; gap: 10px; text-align: center; }
  .footer { padding: 48px 0 28px; }

  /* Section spacing */
  section { padding: 60px 0; }

  /* Buttons — full width stacking on small screens */
  .hero-actions, .cta-actions {
    flex-direction: column;
    align-items: flex-start;
  }
  .cta-actions { align-items: center; }
  .btn { width: 100%; justify-content: center; max-width: 320px; }
}

@media (max-width: 480px) {
  /* Extra small screens */
  .grid-4 { grid-template-columns: 1fr; }
  .container { padding: 0 16px; }
  .card { padding: 24px; }
  .section-header h2 { font-size: 26px; }
  .section-header p { font-size: 16px; }
  .tag { font-size: 10px; }

  /* Mobile nav font size */
  .mobile-nav a { font-size: 22px; }

  /* Footer brand text */
  .footer-brand p { max-width: 100%; }
}