/* Fulgor Design System — shared across fulgorlabs.com & vpn.fulgorlabs.com */

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

:root {
  --black:    #090B10;
  --deep:     #0D1117;
  --surface:  #131923;
  --border:   #1E2A38;
  --muted:    #3A4A5C;
  --text-dim: #7A8EA6;
  --text:     #C8D8E8;
  --white:    #EDF2F7;
  --fulgor:   #00C8FF;
  --fulgor2:  #0077FF;
  --secure:   #00E5A0;
  --warn:     #FF6B8A;
  --grad: linear-gradient(135deg, var(--fulgor) 0%, var(--fulgor2) 100%);

  --font-sans: Verdana, Geneva, Tahoma, sans-serif;
  --font-display: var(--font-sans);
  --font-body:    var(--font-sans);
  --font-mono:    var(--font-sans);

  --container: 1120px;
  --nav-h: 64px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --gap: 24px;
  --section-py: clamp(64px, 8vw, 96px);
}

html { scroll-behavior: smooth; scroll-padding-top: calc(var(--nav-h) + 16px); }

body {
  background: var(--black);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6, p, a, button, strong, em, li, label, input, textarea, select {
  font-family: inherit;
}

::selection { background: rgba(0,200,255,0.22); color: var(--white); }
:focus-visible { outline: 2px solid var(--fulgor); outline-offset: 2px; }

img, svg { display: block; max-width: 100%; }

/* ── Layout ── */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: var(--section-py) 0;
  position: relative;
  z-index: 1;
}

.section--alt {
  background: var(--deep);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.section-head {
  max-width: 540px;
  margin-bottom: 48px;
}

.section-head--center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.eyebrow {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--fulgor);
  margin-bottom: 12px;
}

.h1 {
  font-family: var(--font-sans);
  font-size: clamp(1.75rem, 4.5vw, 2.75rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: normal;
  color: var(--white);
}

.h2 {
  font-family: var(--font-sans);
  font-size: clamp(1.5rem, 2.8vw, 2rem);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: normal;
  color: var(--white);
}

.h3 {
  font-family: var(--font-sans);
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: normal;
  color: var(--white);
}

.lead {
  margin-top: 16px;
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--text-dim);
}

.text-gradient {
  background: var(--grad);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ── Grid ── */
.grid { display: grid; gap: var(--gap); align-items: stretch; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

/* ── Card ── */
.card {
  background: var(--deep);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 32px;
  height: 100%;
  display: flex;
  flex-direction: column;
  transition: border-color 0.2s ease;
}

.card:hover { border-color: rgba(0,200,255,0.22); }

.card--surface { background: var(--surface); }

.card__icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: rgba(0,200,255,0.08);
  border: 1px solid rgba(0,200,255,0.14);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--fulgor);
  margin-bottom: 20px;
  flex-shrink: 0;
}

.card__icon svg { width: 20px; height: 20px; }

.card__body { flex: 1; }

.card__text {
  margin-top: 10px;
  font-size: 0.9rem;
  line-height: 1.65;
  color: var(--text-dim);
}

.card__tag {
  display: inline-block;
  margin-top: 20px;
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--fulgor);
  border: 1px solid rgba(0,200,255,0.2);
  padding: 4px 10px;
  border-radius: 4px;
}

.card__footer { margin-top: auto; padding-top: 24px; }

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 600;
  line-height: 1;
  padding: 14px 24px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.2s ease, opacity 0.2s ease, border-color 0.2s ease;
  white-space: nowrap;
}

.btn:hover { transform: translateY(-1px); }

.btn--primary {
  background: var(--grad);
  color: var(--black);
  box-shadow: 0 4px 24px rgba(0,200,255,0.2);
}

.btn--ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--border);
}

.btn--ghost:hover { border-color: var(--fulgor); color: var(--fulgor); }

.btn--block { width: 100%; }

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

/* ── Nav ── */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  background: rgba(9,11,16,0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--white);
  font-family: var(--font-sans);
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: normal;
  white-space: nowrap;
}

.logo__mark {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  background: var(--grad);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--black);
  flex-shrink: 0;
}

.logo__mark svg { width: 16px; height: 16px; }

.logo em {
  font-style: normal;
  color: var(--fulgor);
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav__links a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-dim);
  text-decoration: none;
  transition: color 0.2s;
}

.nav__links a:hover { color: var(--white); }

.nav__cta {
  padding: 10px 18px !important;
  background: var(--grad) !important;
  color: var(--black) !important;
  border-radius: var(--radius-sm) !important;
  font-weight: 600 !important;
}

.menu-btn {
  display: none;
  width: 40px;
  height: 40px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: transparent;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
}

.menu-btn span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--white);
  transition: transform 0.25s, opacity 0.25s;
}

.menu-btn.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-btn.is-open span:nth-child(2) { opacity: 0; }
.menu-btn.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mobile-menu {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 99;
  background: rgba(9,11,16,0.98);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 24px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s;
}

.mobile-menu.is-open { opacity: 1; pointer-events: all; }

.mobile-menu a {
  font-family: var(--font-sans);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--white);
  text-decoration: none;
}

/* ── Footer ── */
.footer {
  background: var(--deep);
  border-top: 1px solid var(--border);
  padding: 64px 0 32px;
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--border);
}

.footer__brand p {
  margin-top: 16px;
  max-width: 260px;
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--text-dim);
}

.footer__col h4 {
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 16px;
}

.footer__col ul { list-style: none; }

.footer__col li + li { margin-top: 10px; }

.footer__col a {
  font-size: 0.875rem;
  color: var(--text-dim);
  text-decoration: none;
  transition: color 0.2s;
}

.footer__col a:hover { color: var(--fulgor); }

.footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  padding-top: 28px;
  font-size: 0.8rem;
  color: var(--muted);
}

.footer__bottom a { color: var(--fulgor); text-decoration: none; }

/* ── Stat ── */
.stat {
  text-align: center;
  padding: 32px 20px;
  background: var(--deep);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
}

.stat__num {
  font-family: var(--font-sans);
  font-size: clamp(1.75rem, 3.5vw, 2.25rem);
  font-weight: 700;
  letter-spacing: normal;
  line-height: 1.2;
  color: var(--fulgor);
}

.stat__label {
  margin-top: 10px;
  font-size: 0.875rem;
  color: var(--text-dim);
}

/* ── Reveal ── */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.is-visible { opacity: 1; transform: none; }

/* ── Responsive ── */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .split { grid-template-columns: 1fr; gap: 40px; }
}

@media (max-width: 768px) {
  .nav__links { display: none; }
  .menu-btn { display: inline-flex; }
  .mobile-menu { display: flex; }
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .footer__grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 520px) {
  .footer__grid { grid-template-columns: 1fr; }
  .btn-row { flex-direction: column; align-items: stretch; }
  .btn { width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  .reveal { opacity: 1; transform: none; }
}