/* ============================================================
   VantageScale – Custom Styles
   Tailwind handles utilities; this file handles animations,
   glassmorphism, gradient mesh, and scroll-driven effects.
   ============================================================ */

/* ---------- Design Tokens ---------- */
:root {
  --vs-bg:      #0A0A0F;
  --vs-card:    #10101C;
  --vs-slate:   #13131F;
  --vs-blue:    #3B82F6;
  --vs-cyan:    #06B6D4;
  --vs-text:    #F1F5F9;
  --vs-muted:   #94A3B8;
  --vs-border:  #1E293B;
  --vs-green:   #10B981;
  --vs-amber:   #F59E0B;
}

/* ---------- Base ---------- */
*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  background-color: var(--vs-bg);
  color: var(--vs-text);
  font-family: 'Inter', sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ---------- Typography ---------- */
.font-display { font-family: 'Syne', 'Inter', sans-serif; }


/* ---------- Hero Gradient Mesh ---------- */
.hero-mesh {
  background:
    radial-gradient(ellipse at 15% 40%, rgba(59, 130, 246, 0.18) 0%, transparent 55%),
    radial-gradient(ellipse at 85% 15%, rgba(6, 182, 212, 0.12) 0%, transparent 50%),
    radial-gradient(ellipse at 70% 85%, rgba(139, 92, 246, 0.08) 0%, transparent 45%),
    radial-gradient(ellipse at 50% 50%, rgba(59, 130, 246, 0.05) 0%, transparent 70%);
  animation: meshPulse 10s ease-in-out infinite;
}

@keyframes meshPulse {
  0%, 100% {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
  50% {
    opacity: 0.85;
    transform: scale(1.03) translateY(-10px);
  }
}

/* ---------- CTA Section Background ---------- */
.cta-gradient {
  background:
    radial-gradient(ellipse at 50% -20%, rgba(59, 130, 246, 0.2) 0%, transparent 60%),
    radial-gradient(ellipse at 0% 120%, rgba(6, 182, 212, 0.1) 0%, transparent 50%),
    radial-gradient(ellipse at 100% 120%, rgba(139, 92, 246, 0.08) 0%, transparent 50%);
}

/* ---------- Glassmorphism ---------- */
.glass-card {
  background: rgba(16, 16, 28, 0.75);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(59, 130, 246, 0.12);
}

.glass-cta-bar {
  background: rgba(10, 10, 15, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-top: 1px solid var(--vs-border);
}

/* ---------- Sticky Navbar ---------- */
#navbar { transition: background 0.3s ease, border-color 0.3s ease; }

#navbar.scrolled {
  background: rgba(10, 10, 15, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--vs-border);
}

/* ---------- Mobile Hamburger → X ---------- */
.hamburger-line {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--vs-text);
  transition: transform 0.3s ease, opacity 0.3s ease;
  transform-origin: center;
}

#hamburger.is-open .hamburger-line:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}
#hamburger.is-open .hamburger-line:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
#hamburger.is-open .hamburger-line:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* ---------- FAQ Accordion ---------- */
details summary { list-style: none; }
details summary::-webkit-details-marker { display: none; }

details .accordion-icon {
  transition: transform 0.25s ease;
  flex-shrink: 0;
}
details[open] .accordion-icon {
  transform: rotate(180deg);
}

details .accordion-body {
  overflow: hidden;
  max-height: 0;
  transition: max-height 0.35s ease, padding 0.35s ease;
  padding-top: 0;
}
details[open] .accordion-body {
  max-height: 500px;
  padding-top: 12px;
}

/* ---------- Gradient Divider ---------- */
.gradient-divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--vs-blue), transparent);
  border: none;
  margin: 0;
}

/* ---------- Scroll Animations (AOS supplement) ---------- */
[data-aos] { will-change: transform, opacity; }

/* ---------- Card Hover Glow ---------- */
.card-hover {
  transition: border-color 0.3s ease, box-shadow 0.3s ease, transform 0.2s ease;
}
.card-hover:hover {
  transform: translateY(-2px);
}

/* ---------- Button Lift ---------- */
.btn-primary {
  transition: background-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}
.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 30px rgba(59, 130, 246, 0.35);
}
.btn-primary:active {
  transform: translateY(0);
}

/* ---------- Service Card Mobile Scroll ---------- */
@media (max-width: 639px) {
  .services-scroll {
    display: flex;
    overflow-x: auto;
    gap: 16px;
    padding-bottom: 12px;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }
  .services-scroll::-webkit-scrollbar { display: none; }
  .services-scroll .service-card {
    min-width: 280px;
    flex-shrink: 0;
  }
}

/* ---------- Metric Highlight ---------- */
.metric-number {
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum";
}

/* ---------- Blog Card ---------- */
.blog-card {
  transition: border-color 0.3s ease, transform 0.25s ease;
}
.blog-card:hover {
  transform: translateY(-3px);
  border-color: rgba(59, 130, 246, 0.3);
}

/* ---------- Focus Styles (Accessibility) ---------- */
:focus-visible {
  outline: 2px solid var(--vs-blue);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ---------- Selection ---------- */
::selection {
  background: rgba(59, 130, 246, 0.3);
  color: var(--vs-text);
}

/* ---------- Scrollbar ---------- */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--vs-bg); }
::-webkit-scrollbar-thumb { background: var(--vs-border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--vs-muted); }

/* ---------- Reduced Motion ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  [data-aos] {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
}