/* ============================================
   NeuroVolt Solutions — Global Styles
   ============================================ */
:root {
  --bg-0: #050810;
  --bg-1: #0a0e1c;
  --bg-2: #111626;
  --ink-0: #f4f7ff;
  --ink-1: #c8d0e4;
  --ink-2: #7c8aa8;
  --ink-3: #4a5675;
  --brand-navy: #0a2463;
  --brand-navy-2: #1e3a8a;
  --brand-green: #22c55e;
  --brand-green-2: #16a34a;
  --accent: #22c55e;
  --accent-2: #38bdf8;
  --spark: #a3ffce;
  --line: rgba(255,255,255,0.08);
  --line-strong: rgba(255,255,255,0.16);
  --grid: rgba(34, 197, 94, 0.06);
  --shadow-glow: 0 0 40px rgba(34, 197, 94, 0.35);

  --font-display: "Space Grotesk", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;
}

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

html, body {
  background: var(--bg-0);
  color: var(--ink-0);
  font-family: var(--font-display);
  font-feature-settings: "ss01", "cv01";
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  scroll-behavior: smooth;
  cursor: none;
}

body {
  position: relative;
  min-height: 100vh;
  background:
    radial-gradient(1200px 800px at 80% -10%, rgba(34,197,94,0.10), transparent 60%),
    radial-gradient(900px 700px at -10% 30%, rgba(56,189,248,0.07), transparent 60%),
    radial-gradient(800px 600px at 50% 110%, rgba(10,36,99,0.45), transparent 60%),
    var(--bg-0);
}

/* Subtle circuit grid background */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
  pointer-events: none;
  z-index: 0;
  opacity: 0.6;
}

a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: none; }

::selection { background: var(--accent); color: var(--bg-0); }

/* ============ TYPOGRAPHY ============ */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.05;
  text-wrap: balance;
}
h1 { font-size: clamp(48px, 7vw, 112px); font-weight: 700; letter-spacing: -0.035em; }
h2 { font-size: clamp(36px, 4.5vw, 64px); }
h3 { font-size: clamp(22px, 2.2vw, 32px); }
p  { color: var(--ink-1); line-height: 1.55; text-wrap: pretty; }

.mono {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-2);
}
.mono-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.mono-tag::before {
  content: "";
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--accent);
  animation: pulse 1.6s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.8); }
}

.gradient-text {
  background: linear-gradient(135deg, #fff 20%, var(--accent) 60%, var(--accent-2) 90%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ============ LAYOUT ============ */
.container {
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 48px;
  position: relative;
  z-index: 2;
}
@media (max-width: 720px) {
  .container { padding: 0 24px; }
}

section { position: relative; padding: 120px 0; }

/* ============ NAV ============ */
.nv-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 48px;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  background: linear-gradient(180deg, rgba(5,8,16,0.85), rgba(5,8,16,0.4));
  border-bottom: 1px solid var(--line);
  transition: transform 0.4s ease;
}
.nv-nav.hidden { transform: translateY(-100%); }
.nv-nav__logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  font-size: 16px;
  letter-spacing: -0.01em;
}
.nv-nav__logo img {
  height: 36px;
  width: auto;
  filter: drop-shadow(0 0 8px rgba(34,197,94,0.4));
}
.nv-nav__logo-text { display: flex; flex-direction: column; line-height: 1; }
.nv-nav__logo-text strong { font-size: 14px; letter-spacing: 0.04em; }
.nv-nav__logo-text span { font-family: var(--font-mono); font-size: 9px; letter-spacing: 0.2em; color: var(--ink-2); margin-top: 2px; }

.nv-nav__links {
  display: flex;
  gap: 8px;
  align-items: center;
}

.nv-nav__links a {
  font-size: 13px;
  font-weight: 500;
  padding: 9px 18px;
  border-radius: 100px;
}

.nv-nav__cta {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 11px 18px;
  border-radius: 100px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

@media (max-width: 768px) {
  .nv-nav { padding: 14px 20px; }
}

/* ============ BUTTONS ============ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 16px 28px;
  border-radius: 100px;
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 500;
  position: relative;
  overflow: hidden;
}

/* ============ CARDS ============ */
.card {
  position: relative;
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 32px;
  background: linear-gradient(180deg, rgba(255,255,255,0.025), rgba(255,255,255,0.005));
  transition: border-color 0.3s, transform 0.3s;
  overflow: hidden;
}
.card:hover { border-color: var(--line-strong); }
.card__corner {
  position: absolute;
  width: 14px;
  height: 14px;
  border: 1px solid var(--accent);
  opacity: 0.6;
}
.card__corner.tl { top: 8px; left: 8px; border-right: 0; border-bottom: 0; }
.card__corner.tr { top: 8px; right: 8px; border-left: 0; border-bottom: 0; }
.card__corner.bl { bottom: 8px; left: 8px; border-right: 0; border-top: 0; }
.card__corner.br { bottom: 8px; right: 8px; border-left: 0; border-top: 0; }

/* ============ REVEAL ANIMATIONS ============ */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.9s cubic-bezier(0.2, 0.8, 0.2, 1), transform 0.9s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.reveal.in { opacity: 1; transform: translateY(0); }
.reveal[data-delay="1"] { transition-delay: 0.08s; }
.reveal[data-delay="2"] { transition-delay: 0.16s; }
.reveal[data-delay="3"] { transition-delay: 0.24s; }
.reveal[data-delay="4"] { transition-delay: 0.32s; }
.reveal[data-delay="5"] { transition-delay: 0.40s; }

/* ============ INTRO SPARK OVERLAY ============ */
#nv-intro {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: #000;
  pointer-events: all;
}
#nv-intro canvas { position: absolute; inset: 0; width: 100%; height: 100%; }
#nv-intro .intro-glyph {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 24px;
  pointer-events: none;
}
#nv-intro .intro-glyph .mono {
  font-family: var(--font-mono);
  color: rgba(255,255,255,0.4);
  font-size: 11px;
  letter-spacing: 0.4em;
  opacity: 0;
  transition: opacity 0.6s;
}
#nv-intro.show-mono .mono { opacity: 1; }
#nv-intro.fade-out {
  opacity: 0;
  transition: opacity 0.8s ease;
  pointer-events: none;
}

/* ============ CURSOR ============ */
#nv-cursor-canvas {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9000;
  mix-blend-mode: screen;
}
.nv-cursor-dot {
  position: fixed;
  width: 8px;
  height: 8px;
  background: var(--accent);
  border-radius: 50%;
  pointer-events: none;
  z-index: 9001;
  transform: translate(-50%, -50%);
  box-shadow: 0 0 12px var(--accent);
  transition: width 0.2s, height 0.2s, background 0.2s;
  mix-blend-mode: screen;
}
.nv-cursor-dot.hover {
  width: 36px;
  height: 36px;
  background: rgba(34,197,94,0.2);
  border: 1px solid var(--accent);
  box-shadow: 0 0 24px var(--accent);
}

/* ============ FOOTER ============ */
.nv-footer {
  position: relative;
  border-top: 1px solid var(--line);
  padding: 80px 0 40px;
  margin-top: 80px;
}
.nv-footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 64px;
}
.nv-footer__brand img { height: 64px; margin-bottom: 18px; }
.nv-footer__brand p { font-size: 14px; max-width: 320px; }
.nv-footer__col h4 { font-size: 12px; font-family: var(--font-mono); letter-spacing: 0.2em; text-transform: uppercase; color: var(--ink-2); margin-bottom: 18px; }
.nv-footer__col a { display: block; padding: 6px 0; color: var(--ink-1); font-size: 14px; transition: color 0.2s; }
.nv-footer__col a:hover { color: var(--accent); }
.nv-footer__bottom {
  margin-top: 64px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-3);
  letter-spacing: 0.1em;
}
@media (max-width: 720px) {
  .nv-footer__grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .nv-footer__bottom { flex-direction: column; gap: 16px; }
}

/* ============ TWEAKS PANEL ============ */
#nv-tweaks {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 8000;
  width: 280px;
  background: rgba(10,14,28,0.92);
  backdrop-filter: blur(20px);
  border: 1px solid var(--line-strong);
  border-radius: 16px;
  padding: 20px;
  display: none;
  font-size: 12px;
}
#nv-tweaks.show { display: block; }
#nv-tweaks h4 {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 16px;
}
#nv-tweaks .row {
  margin-bottom: 14px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
#nv-tweaks label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-2);
  display: flex;
  justify-content: space-between;
}
#nv-tweaks input[type="range"] {
  width: 100%;
  -webkit-appearance: none;
  height: 4px;
  background: rgba(255,255,255,0.1);
  border-radius: 2px;
}
#nv-tweaks input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  box-shadow: 0 0 10px var(--accent);
}
#nv-tweaks button {
  width: 100%;
  padding: 10px;
  background: rgba(34,197,94,0.1);
  border: 1px solid rgba(34,197,94,0.3);
  border-radius: 8px;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  transition: all 0.2s;
}
#nv-tweaks button:hover { background: rgba(34,197,94,0.2); }
#nv-tweaks .swatches {
  display: flex;
  gap: 8px;
}
#nv-tweaks .swatch {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform 0.2s;
}
#nv-tweaks .swatch:hover { transform: scale(1.1); }
#nv-tweaks .swatch.selected { border-color: #fff; }