/* ═══════════════════════════════════════════════════════
   NEXUN — Light + Dark Tech Theme
   Light mode is the default. Dark mode activates via body.dark
   ═══════════════════════════════════════════════════════ */

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

/* ═══════════════════════════════════════════
   LIGHT THEME (default)
   ═══════════════════════════════════════════ */
:root {
  --ink:         #111827;
  --ink-mid:     #374151;
  --ink-soft:    #6B7280;
  --ink-ghost:   #9CA3AF;

  --surface:     #F3F4F6;
  --surface-card:#FFFFFF;
  --surface-alt: #EAECF0;
  --surface-hover:#F3F4F6;

  --border:      #D1D5DB;
  --border-soft: #E5E7EB;
  --border-glow: #D1D5DB;

  --accent:      #1D4ED8;
  --accent-dark: #1E3A8A;
  --accent-glow: rgba(29,78,216,0.12);
  --accent-neon: #1D4ED8;

  --teal:        #0D9488;
  --teal-glow:   rgba(13,148,136,0.12);
  --violet:      #7C3AED;
  --violet-glow: rgba(124,58,237,0.12);
  --amber:       #B45309;
  --amber-glow:  rgba(180,83,9,0.12);

  --green:       #10B981;

  --shadow-xs:   0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-sm:   0 4px 12px rgba(0,0,0,0.07), 0 2px 6px rgba(0,0,0,0.04);
  --shadow-md:   0 10px 30px rgba(0,0,0,0.10), 0 4px 12px rgba(0,0,0,0.06);
  --shadow-lg:   0 20px 48px rgba(0,0,0,0.13), 0 8px 20px rgba(0,0,0,0.07);

  --btn-primary-bg: var(--accent);
  --btn-primary-hover-bg: var(--accent-dark);
  --form-submit-bg: var(--accent);
  --form-submit-hover-bg: var(--accent-dark);
  --hero-title-em-color: var(--accent);

  --header-bg: rgba(243,244,246,0.88);
  --footer-bg: #111827;
  --footer-border: #1F2937;
  --footer-text: #6B7280;
  --footer-heading: #9CA3AF;
  --footer-icon-bg: #1F2937;
  --footer-icon-border: #374151;
  --footer-icon-color: #9CA3AF;
  --footer-bottom-text: #374151;
  --footer-bottom-hover: #6B7280;
  --footer-logo-filter: brightness(0) invert(1);
  --footer-contact-hover: #9CA3AF;

  --card-icon-bg-blue: #EFF6FF;
  --card-icon-bg-teal: #F0FDFA;
  --card-icon-bg-violet: #F5F3FF;
  --card-icon-bg-amber: #FFFBEB;

  --radius-sm:   6px;
  --radius:      10px;
  --radius-lg:   16px;
  --radius-xl:   22px;

  --transition:  .22s cubic-bezier(.4,0,.2,1);
}

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: 'DM Sans', 'Inter', sans-serif;
  background: var(--surface);
  color: var(--ink);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  transition: background var(--transition), color var(--transition);
}

/* ══ SCROLLBAR ══ */
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: var(--surface-alt); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 10px; }

/* ═══════════════════════════════════════════
   THEME TOGGLE BUTTON
   ═══════════════════════════════════════════ */
.theme-toggle {
  width: 36px; height: 36px;
  border-radius: 50%;
  border: 1.5px solid var(--border);
  background: var(--surface-card);
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  padding: 0;
  margin-left: 12px;
  transition: all var(--transition);
  position: relative;
  flex-shrink: 0;
}
.theme-toggle:hover {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}
.theme-toggle svg {
  width: 17px; height: 17px;
  position: absolute;
  transition: opacity .25s ease, transform .35s ease;
  stroke: var(--ink-mid);
  fill: none;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}
/* Sun icon — visible in light mode (default) */
.theme-toggle .icon-sun {
  opacity: 1;
  transform: rotate(0deg) scale(1);
}
/* Moon icon — hidden in light mode */
.theme-toggle .icon-moon {
  opacity: 0;
  transform: rotate(-90deg) scale(0.6);
}
/* When dark mode: swap icons */
body.dark .theme-toggle .icon-sun {
  opacity: 0;
  transform: rotate(90deg) scale(0.6);
}
body.dark .theme-toggle .icon-moon {
  opacity: 1;
  transform: rotate(0deg) scale(1);
}

/* ═══════════════════════════════════════════
   HEADER
   ═══════════════════════════════════════════ */
.header {
  position: sticky; top: 0; z-index: 200;
  background: var(--header-bg);
  backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  border-bottom: 1px solid var(--border-soft);
  height: 68px;
  display: flex; align-items: center;
  padding: 0 clamp(20px, 5vw, 72px);
}

.header-inner {
  width: 100%; max-width: 1200px; margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
}

.logo { display: flex; align-items: center; }
.logo img { height: 34px; display: block; }

.nav { display: flex; align-items: center; gap: 6px; }
.nav a {
  text-decoration: none;
  color: var(--ink-mid);
  font-size: .875rem; font-weight: 500;
  padding: 7px 14px; border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
}
.nav a:hover { color: var(--ink); background: var(--surface-alt); }

.nav .btn-cta {
  background: var(--accent);
  color: #fff !important;
  padding: 8px 18px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  margin-left: 8px;
  box-shadow: 0 1px 4px rgba(29,78,216,.35);
  transition: background var(--transition), box-shadow var(--transition), transform var(--transition);
}
.nav .btn-cta:hover {
  background: var(--accent-dark) !important;
  box-shadow: 0 4px 14px rgba(29,78,216,.40);
  transform: translateY(-1px);
}

/* ═══════════════════════════════════════════
   HERO
   ═══════════════════════════════════════════ */
.hero {
  position: relative; z-index: 1;
  padding: clamp(60px, 8vw, 100px) clamp(20px, 5vw, 72px) clamp(60px, 7vw, 90px);
  max-width: 1200px; margin: 0 auto;
  display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center;
}

.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: .72rem; font-weight: 600; letter-spacing: .1em;
  text-transform: uppercase; color: var(--accent);
  padding: 5px 12px 5px 8px;
  background: var(--accent-glow);
  border: 1px solid rgba(29,78,216,.18);
  border-radius: 99px;
  margin-bottom: 24px;
}
.hero-badge-dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--accent);
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: .5; transform: scale(.75); }
}

.hero-title {
  font-size: clamp(2rem, 3.4vw, 3rem);
  font-weight: 700; line-height: 1.15; letter-spacing: -.025em;
  color: var(--ink); margin-bottom: 20px;
}
.hero-title em { font-style: normal; color: var(--hero-title-em-color); }

.hero-desc {
  font-size: 1.05rem; color: var(--ink-mid); line-height: 1.72;
  margin-bottom: 36px; max-width: 460px;
}

.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }

.btn {
  display: inline-flex; align-items: center; gap: 8px;
  text-decoration: none; border: none; cursor: pointer;
  font-family: 'DM Sans', sans-serif;
  font-size: .9rem; font-weight: 600;
  border-radius: var(--radius);
  padding: 13px 24px;
  transition: all var(--transition);
  position: relative; overflow: hidden;
}
.btn-primary {
  background: var(--btn-primary-bg); color: #fff;
  box-shadow: 0 2px 8px rgba(29,78,216,.3);
}
.btn-primary:hover {
  background: var(--btn-primary-hover-bg);
  box-shadow: 0 6px 20px rgba(29,78,216,.38);
  transform: translateY(-2px);
}
.btn-ghost {
  background: transparent; color: var(--ink-mid);
  border: 1.5px solid var(--border);
}
.btn-ghost:hover { background: var(--surface-alt); color: var(--ink); border-color: var(--ink-ghost); }

/* hero right — metrics panel */
.hero-panel {
  background: var(--surface-card);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-xl);
  padding: 32px 28px;
  box-shadow: var(--shadow-md);
  display: flex; flex-direction: column; gap: 24px;
  position: relative; overflow: hidden;
}

.panel-kpi {
  display: flex; align-items: center; gap: 18px;
  padding: 18px 20px;
  background: var(--surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-soft);
}
.panel-kpi-icon {
  width: 44px; height: 44px; border-radius: var(--radius);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.kpi-num {
  font-size: 1.45rem; font-weight: 700; color: var(--ink); letter-spacing: -.02em;
}
.kpi-label { font-size: .78rem; color: var(--ink-soft); margin-top: 1px; }

.panel-divider { height: 1px; background: var(--border-soft); }

.panel-services {
  display: grid; grid-template-columns: 1fr 1fr; gap: 12px;
}
.panel-svc {
  padding: 14px 16px; border-radius: var(--radius);
  background: var(--surface);
  border: 1px solid var(--border-soft);
  font-size: .82rem; font-weight: 500; color: var(--ink-mid);
  display: flex; align-items: center; gap: 8px;
  transition: border-color var(--transition);
}
.svc-dot { width: 6px; height: 6px; border-radius: 50%; flex-shrink: 0; }

/* ═══════════════════════════════════════════
   TECH DIVIDER
   ═══════════════════════════════════════════ */
.tech-divider {
  position: relative; z-index: 1;
  display: flex; align-items: center; justify-content: center;
  gap: 0;
  max-width: 1200px; margin: 0 auto;
  padding: 0 clamp(20px, 5vw, 72px);
}
.tech-divider-line {
  flex: 1; height: 1px;
  background: linear-gradient(90deg, transparent, var(--border), transparent);
}
.tech-divider-node {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
  margin: 0 16px;
}

/* ═══════════════════════════════════════════
   SOLUTIONS
   ═══════════════════════════════════════════ */
.solutions {
  position: relative; z-index: 1;
  background: var(--surface-alt);
  border-top: 1px solid var(--border-soft);
  border-bottom: 1px solid var(--border-soft);
  padding: clamp(64px, 8vw, 96px) clamp(20px, 5vw, 72px);
}

.section-head {
  max-width: 560px; margin: 0 auto 52px; text-align: center;
}
.section-eyebrow {
  display: inline-block;
  font-size: .7rem; font-weight: 700; letter-spacing: .14em; text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 12px;
}
.section-title {
  font-size: clamp(1.5rem, 2.4vw, 2.1rem);
  font-weight: 700; letter-spacing: -.02em; color: var(--ink); line-height: 1.2;
}
.section-desc {
  margin-top: 12px; font-size: .95rem; color: var(--ink-soft); line-height: 1.7;
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
  max-width: 1200px; margin: 0 auto;
}

.card {
  background: var(--surface-card);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-xl);
  padding: 28px 26px 26px;
  box-shadow: var(--shadow-xs);
  display: flex; flex-direction: column;
  transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
  position: relative; overflow: hidden;
}
.card::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; height: 3px;
  opacity: 0;
  transition: opacity var(--transition);
}
.card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-5px);
  border-color: transparent;
}
.card:hover::before { opacity: 1; }

.card--blue::before   { background: linear-gradient(90deg, var(--accent), #60A5FA); }
.card--teal::before   { background: linear-gradient(90deg, var(--teal), #2DD4BF); }
.card--violet::before { background: linear-gradient(90deg, var(--violet), #A78BFA); }
.card--amber::before  { background: linear-gradient(90deg, var(--amber), #FCD34D); }

.card-icon-wrap {
  width: 48px; height: 48px; border-radius: var(--radius);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 20px;
}
.card--blue   .card-icon-wrap { background: var(--card-icon-bg-blue); }
.card--teal   .card-icon-wrap { background: var(--card-icon-bg-teal); }
.card--violet .card-icon-wrap { background: var(--card-icon-bg-violet); }
.card--amber  .card-icon-wrap { background: var(--card-icon-bg-amber); }

.card-segment {
  font-size: .68rem; font-weight: 700; letter-spacing: .12em; text-transform: uppercase;
  margin-bottom: 6px;
}
.card--blue   .card-segment { color: var(--accent); }
.card--teal   .card-segment { color: var(--teal); }
.card--violet .card-segment { color: var(--violet); }
.card--amber  .card-segment { color: var(--amber); }

.card-name {
  font-size: 1.12rem; font-weight: 700; color: var(--ink);
  margin-bottom: 10px; letter-spacing: -.015em;
}
.card-desc {
  font-size: .875rem; color: var(--ink-soft); line-height: 1.7; flex: 1;
}

.card-link {
  display: inline-flex; align-items: center; gap: 6px;
  margin-top: 22px; align-self: flex-start;
  font-size: .82rem; font-weight: 600;
  text-decoration: none;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--border);
  color: var(--ink-mid);
  transition: all var(--transition);
}
.card--blue   .card-link:hover { border-color: var(--accent);  color: var(--accent);  background: var(--card-icon-bg-blue); }
.card--teal   .card-link:hover { border-color: var(--teal);   color: var(--teal);   background: var(--card-icon-bg-teal); }
.card--violet .card-link:hover { border-color: var(--violet); color: var(--violet); background: var(--card-icon-bg-violet); }
.card--amber  .card-link:hover { border-color: var(--amber);  color: var(--amber);  background: var(--card-icon-bg-amber); }

.arrow-icon { transition: transform var(--transition); }
.card-link:hover .arrow-icon { transform: translateX(3px); }

/* ═══════════════════════════════════════════
   CONTACT
   ═══════════════════════════════════════════ */
.contact {
  position: relative; z-index: 1;
  padding: clamp(64px, 8vw, 96px) clamp(20px, 5vw, 72px);
  max-width: 1200px; margin: 0 auto;
  display: grid; grid-template-columns: 2fr 3fr; gap: 72px; align-items: start;
}

.contact-aside-title {
  font-size: clamp(1.4rem, 2.2vw, 1.9rem);
  font-weight: 700; letter-spacing: -.02em; color: var(--ink); line-height: 1.22;
  margin-bottom: 14px;
}
.contact-aside-desc {
  font-size: .93rem; color: var(--ink-soft); line-height: 1.72; margin-bottom: 32px;
}

.contact-facts { display: flex; flex-direction: column; gap: 14px; }
.fact {
  display: flex; align-items: flex-start; gap: 12px;
  font-size: .85rem; color: var(--ink-mid); line-height: 1.6;
}
.fact a { color: var(--accent); text-decoration: none; }
.fact a:hover { text-decoration: underline; }
.fact-icon {
  width: 32px; height: 32px; flex-shrink: 0;
  background: var(--surface-alt);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  margin-top: 1px;
}

/* form */
.form { display: flex; flex-direction: column; gap: 18px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.field { display: flex; flex-direction: column; gap: 6px; }
.field label {
  font-size: .78rem; font-weight: 600; letter-spacing: .025em;
  color: var(--ink-mid); text-transform: uppercase;
}
.field input, .field textarea {
  background: var(--surface-card);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 16px;
  font-size: .9rem; font-family: 'DM Sans', sans-serif;
  color: var(--ink); outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.field input:focus, .field textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(29,78,216,.12);
}
.field input::placeholder, .field textarea::placeholder { color: var(--ink-ghost); }
.field textarea { min-height: 130px; resize: vertical; }

.form-submit {
  background: var(--form-submit-bg); color: #fff;
  border: none; border-radius: var(--radius);
  padding: 14px;
  font-size: .95rem; font-weight: 600;
  font-family: 'DM Sans', sans-serif;
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(29,78,216,.3);
  transition: all var(--transition);
  position: relative; overflow: hidden;
}
.form-submit:hover {
  background: var(--form-submit-hover-bg);
  box-shadow: 0 6px 20px rgba(29,78,216,.38);
  transform: translateY(-1px);
}
.form-submit:active { transform: translateY(0); }

/* ═══════════════════════════════════════════
   FOOTER
   ═══════════════════════════════════════════ */
.footer {
  background: var(--footer-bg);
  border-top: 1px solid var(--footer-border);
}

.footer-main {
  padding: clamp(48px, 6vw, 72px) clamp(20px, 5vw, 72px) 40px;
  max-width: 1200px; margin: 0 auto;
  display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 48px;
}

.footer-brand-logo { margin-bottom: 14px; }
.footer-brand-logo img {
  height: 32px; filter: var(--footer-logo-filter); display: block;
}
.footer-brand p {
  font-size: .83rem; color: var(--footer-text); line-height: 1.7; max-width: 240px;
}

.footer-col h4 {
  font-size: .72rem; font-weight: 700; letter-spacing: .12em;
  text-transform: uppercase; color: var(--footer-heading);
  margin-bottom: 14px;
}
.footer-col p { font-size: .83rem; color: var(--footer-text); line-height: 1.85; }

.footer-contact-list { display: flex; flex-direction: column; gap: 12px; }
.footer-contact-item {
  display: flex; align-items: flex-start; gap: 10px;
  font-size: .83rem; color: var(--footer-text); line-height: 1.6;
  text-decoration: none;
}
.footer-contact-item:hover { color: var(--footer-contact-hover); }
.footer-contact-icon {
  width: 28px; height: 28px; flex-shrink: 0;
  background: var(--footer-icon-bg);
  border: 1px solid var(--footer-icon-border);
  border-radius: 6px;
  display: flex; align-items: center; justify-content: center;
  margin-top: 1px;
}

.footer-bottom {
  border-top: 1px solid var(--footer-border);
  padding: 18px clamp(20px, 5vw, 72px);
  max-width: 1200px; margin: 0 auto;
  display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 8px;
}
.footer-bottom span, .footer-bottom a {
  font-size: .76rem; color: var(--footer-bottom-text); text-decoration: none;
}
.footer-bottom a:hover { color: var(--footer-bottom-hover); }

/* ═══════════════════════════════════════════
   WHATSAPP BUTTON
   ═══════════════════════════════════════════ */
.wa-btn {
  position: fixed; bottom: 26px; right: 26px; z-index: 999;
  width: 56px; height: 56px; border-radius: 50%;
  background: #22C55E;
  display: flex; align-items: center; justify-content: center;
  text-decoration: none;
  box-shadow: 0 4px 16px rgba(34,197,94,.45), 0 0 0 0 rgba(34,197,94,.3);
  transition: transform var(--transition), box-shadow var(--transition);
  animation: wa-ring 3.5s ease-in-out infinite;
}
.wa-btn:hover { transform: scale(1.1); box-shadow: 0 8px 28px rgba(34,197,94,.55); animation: none; }
.wa-btn svg { width: 28px; height: 28px; fill: #fff; }

@keyframes wa-ring {
  0%   { box-shadow: 0 4px 16px rgba(34,197,94,.45), 0 0 0 0 rgba(34,197,94,.35); }
  70%  { box-shadow: 0 4px 16px rgba(34,197,94,.45), 0 0 0 14px rgba(34,197,94,0); }
  100% { box-shadow: 0 4px 16px rgba(34,197,94,.45), 0 0 0 0 rgba(34,197,94,0); }
}

/* ═══════════════════════════════════════════
   SECTION DIVIDER
   ═══════════════════════════════════════════ */
.section-divider {
  height: 1px; background: var(--border-soft);
  max-width: 1200px; margin: 0 auto;
}

/* ═══════════════════════════════════════════
   RESPONSIVE
   ═══════════════════════════════════════════ */
@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; }
  .hero-panel { display: none; }
  .contact { grid-template-columns: 1fr; gap: 40px; }
  .footer-main { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  .nav a:not(.btn-cta) { display: none; }
  .form-row { grid-template-columns: 1fr; }
  .footer-main { grid-template-columns: 1fr; }
  .cards { grid-template-columns: 1fr; }
}

/* ═══════════════════════════════════════════
   REVEAL ANIMATIONS
   ═══════════════════════════════════════════ */
.reveal {
  opacity: 0; transform: translateY(22px);
  transition: opacity .55s ease, transform .55s ease;
}
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ═══════════════════════════════════════════════════════════
   ╔════════════════════════════════════════════════════════╗
   ║             DARK THEME (body.dark)                     ║
   ╚════════════════════════════════════════════════════════╝
   ═══════════════════════════════════════════════════════════ */

body.dark {
  /* ── Core palette ── */
  --ink:         #F1F5F9;
  --ink-mid:     #CBD5E1;
  --ink-soft:    #94A3B8;
  --ink-ghost:   #64748B;

  --surface:     #06090F;
  --surface-card:#1E314E;
  --surface-alt: #0B1320;
  --surface-hover:#283D5C;

  --border:      #2A3F5F;
  --border-soft: #1E314A;
  --border-glow: #2E4A75;

  --accent:      #0EA5E9;
  --accent-dark: #0284C7;
  --accent-glow: rgba(14,165,233,0.18);
  --accent-neon: #38BDF8;

  --teal:        #14B8A6;
  --teal-glow:   rgba(20,184,166,0.18);
  --violet:      #8B5CF6;
  --violet-glow: rgba(139,92,246,0.18);
  --amber:       #F59E0B;
  --amber-glow:  rgba(245,158,11,0.18);

  --shadow-xs:   0 1px 3px rgba(0,0,0,0.4), 0 0 0 1px rgba(14,165,233,0.04);
  --shadow-sm:   0 4px 12px rgba(0,0,0,0.5), 0 0 0 1px rgba(14,165,233,0.06);
  --shadow-md:   0 8px 30px rgba(0,0,0,0.6), 0 0 0 1px rgba(14,165,233,0.08);
  --shadow-lg:   0 16px 48px rgba(0,0,0,0.7), 0 0 20px rgba(14,165,233,0.08);

  --btn-primary-bg: linear-gradient(135deg, var(--accent), #0284C7);
  --btn-primary-hover-bg: linear-gradient(135deg, var(--accent-neon), var(--accent));
  --form-submit-bg: linear-gradient(135deg, var(--accent), #0284C7);
  --form-submit-hover-bg: linear-gradient(135deg, var(--accent-neon), var(--accent));
  --hero-title-em-color: transparent;

  --header-bg: rgba(6,9,15,0.82);
  --footer-bg: #020617;
  --footer-border: #1E293B;
  --footer-text: #64748B;
  --footer-heading: #94A3B8;
  --footer-icon-bg: rgba(255,255,255,0.04);
  --footer-icon-border: #1E293B;
  --footer-icon-color: #94A3B8;
  --footer-bottom-text: #475569;
  --footer-bottom-hover: #94A3B8;
  --footer-logo-filter: brightness(0) invert(1);
  --footer-contact-hover: #38BDF8;

  --card-icon-bg-blue: rgba(14,165,233,0.1);
  --card-icon-bg-teal: rgba(20,184,166,0.1);
  --card-icon-bg-violet: rgba(139,92,246,0.1);
  --card-icon-bg-amber: rgba(245,158,11,0.1);

  --transition: .25s cubic-bezier(.4,0,.2,1);
}

/* ── Dark decorative: dot-grid overlay ── */
body.dark::before {
  content: '';
  position: fixed; top: 0; left: 0; right: 0; bottom: 0; z-index: 0;
  pointer-events: none;
  background-image: radial-gradient(circle, rgba(14,165,233,0.06) 1px, transparent 1px);
  background-size: 28px 28px;
  mask-image: linear-gradient(to bottom, rgba(0,0,0,0.35) 0%, rgba(0,0,0,0.7) 40%, rgba(0,0,0,0.7) 60%, rgba(0,0,0,0.35) 100%);
  -webkit-mask-image: linear-gradient(to bottom, rgba(0,0,0,0.35) 0%, rgba(0,0,0,0.7) 40%, rgba(0,0,0,0.7) 60%, rgba(0,0,0,0.35) 100%);
}

/* ── Dark decorative: ambient glow orbs ── */
body.dark::after {
  content: '';
  position: fixed; top: 0; left: 0; right: 0; bottom: 0; z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(ellipse 600px 400px at 15% 20%, rgba(14,165,233,0.04) 0%, transparent 70%),
    radial-gradient(ellipse 500px 350px at 85% 60%, rgba(139,92,246,0.03) 0%, transparent 70%),
    radial-gradient(ellipse 400px 300px at 50% 90%, rgba(20,184,166,0.03) 0%, transparent 70%);
}

/* ── Dark: hero title em gradient text ── */
body .hero-title em {
  font-style: normal;
  background: linear-gradient(135deg, var(--accent-neon), var(--teal));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ── Dark: hero badge ── */
body.dark .hero-badge {
  color: var(--accent-neon);
  border-color: rgba(14,165,233,0.22);
  background: rgba(14,165,233,0.08);
  backdrop-filter: blur(4px);
}
body.dark .hero-badge-dot {
  box-shadow: 0 0 6px var(--accent-neon);
  animation: pulse-glow 2s ease-in-out infinite;
}
@keyframes pulse-glow {
  0%, 100% { opacity: 1; transform: scale(1); box-shadow: 0 0 6px var(--accent-neon); }
  50% { opacity: .4; transform: scale(.7); box-shadow: 0 0 12px var(--accent-neon); }
}

/* ── Dark: header glass-morphism ── */
body.dark .header {
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
}

/* ── Dark: nav CTA glow ── */
body.dark .nav .btn-cta {
  background: linear-gradient(135deg, var(--accent), #0284C7);
  box-shadow: 0 0 16px rgba(14,165,233,0.25), 0 2px 8px rgba(2,132,199,0.3);
  border: 1px solid rgba(56,189,248,0.3);
}
body.dark .nav .btn-cta:hover {
  box-shadow: 0 0 28px rgba(14,165,233,0.45), 0 4px 16px rgba(2,132,199,0.4);
}

/* ── Dark: button shimmer scan-line ── */
body.dark .btn-primary::after {
  content: '';
  position: absolute; top: -50%; left: -50%; width: 200%; height: 200%;
  background: linear-gradient(45deg, transparent 40%, rgba(255,255,255,0.08) 50%, transparent 60%);
  transform: translateX(-100%);
  transition: transform .6s;
}
body.dark .btn-primary:hover::after { transform: translateX(100%); }
body.dark .btn-primary {
  border: 1px solid rgba(56,189,248,0.35);
  box-shadow: 0 0 20px rgba(14,165,233,0.2), 0 2px 8px rgba(2,132,199,0.25);
}
body.dark .btn-primary:hover {
  box-shadow: 0 0 20px rgba(14,165,233,0.25), 0 0 60px rgba(14,165,233,0.08), 0 4px 16px rgba(2,132,199,0.4);
}
body.dark .btn-ghost:hover {
  box-shadow: 0 0 12px rgba(14,165,233,0.1);
}

/* ── Dark: hero panel scanlines ── */
body.dark .hero-panel::after {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; bottom: 0;
  pointer-events: none;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(14,165,233,0.015) 2px,
    rgba(14,165,233,0.015) 4px
  );
  border-radius: var(--radius-xl);
}
body.dark .hero-panel {
  box-shadow: var(--shadow-md), inset 0 1px 0 rgba(255,255,255,0.02);
}

/* ── Dark: panel KPI icon glow ── */
body.dark .panel-kpi-icon {
  box-shadow: 0 0 12px rgba(20,184,166,0.15);
}
body.dark .panel-divider {
  background: linear-gradient(90deg, transparent, var(--border), transparent);
}
body.dark .panel-svc:hover {
  border-color: var(--border-glow);
  box-shadow: 0 0 10px rgba(14,165,233,0.06);
}
body.dark .svc-dot {
  box-shadow: 0 0 6px currentColor;
}

/* ── Dark: tech divider glow ── */
body.dark .tech-divider-line {
  background: linear-gradient(90deg, transparent, var(--border-glow), transparent);
}
body.dark .tech-divider-node {
  box-shadow: 0 0 8px var(--accent-neon), 0 0 16px rgba(14,165,233,0.3);
  animation: node-pulse 3s ease-in-out infinite;
}
@keyframes node-pulse {
  0%, 100% { box-shadow: 0 0 8px var(--accent-neon), 0 0 16px rgba(14,165,233,0.3); }
  50% { box-shadow: 0 0 14px var(--accent-neon), 0 0 28px rgba(14,165,233,0.5); }
}

/* ── Dark: card corner glow ── */
body.dark .card::after {
  content: '';
  position: absolute; top: -40px; right: -40px;
  width: 80px; height: 80px; border-radius: 50%;
  opacity: 0;
  transition: opacity var(--transition);
  pointer-events: none;
}
body.dark .card:hover { border-color: var(--border-glow); }
body.dark .card:hover::after { opacity: .5; }
body.dark .card--blue::before   { background: linear-gradient(90deg, var(--accent), var(--accent-neon)); }
body.dark .card--blue::after    { background: radial-gradient(circle, rgba(14,165,233,0.18), transparent 70%); }
body.dark .card--teal::before   { background: linear-gradient(90deg, var(--teal), #2DD4BF); }
body.dark .card--teal::after    { background: radial-gradient(circle, rgba(20,184,166,0.18), transparent 70%); }
body.dark .card--violet::before { background: linear-gradient(90deg, var(--violet), #A78BFA); }
body.dark .card--violet::after  { background: radial-gradient(circle, rgba(139,92,246,0.18), transparent 70%); }
body.dark .card--amber::before  { background: linear-gradient(90deg, var(--amber), #FCD34D); }
body.dark .card--amber::after   { background: radial-gradient(circle, rgba(245,158,11,0.18), transparent 70%); }

/* ── Dark: card icon glow ── */
body.dark .card--blue   .card-icon-wrap { box-shadow: 0 0 12px rgba(14,165,233,0.1); }
body.dark .card--teal   .card-icon-wrap { box-shadow: 0 0 12px rgba(20,184,166,0.1); }
body.dark .card--violet .card-icon-wrap { box-shadow: 0 0 12px rgba(139,92,246,0.1); }
body.dark .card--amber  .card-icon-wrap { box-shadow: 0 0 12px rgba(245,158,11,0.1); }

/* ── Dark: card link hover glow ── */
body.dark .card--blue   .card-link:hover { box-shadow: 0 0 10px rgba(14,165,233,0.12); }
body.dark .card--teal   .card-link:hover { box-shadow: 0 0 10px rgba(20,184,166,0.12); }
body.dark .card--violet .card-link:hover { box-shadow: 0 0 10px rgba(139,92,246,0.12); }
body.dark .card--amber  .card-link:hover { box-shadow: 0 0 10px rgba(245,158,11,0.12); }

/* ── Dark: form focus glow ── */
body.dark .field input:focus, body.dark .field textarea:focus {
  box-shadow: 0 0 0 3px rgba(14,165,233,0.15), 0 0 12px rgba(14,165,233,0.08);
}

/* ── Dark: form submit glow + shimmer ── */
body.dark .form-submit {
  border: 1px solid rgba(56,189,248,0.3);
  box-shadow: 0 0 20px rgba(14,165,233,0.2), 0 2px 8px rgba(2,132,199,0.25);
}
body.dark .form-submit:hover {
  box-shadow: 0 0 20px rgba(14,165,233,0.25), 0 0 60px rgba(14,165,233,0.08), 0 4px 16px rgba(2,132,199,0.4);
}
body.dark .form-submit::after {
  content: '';
  position: absolute; top: -50%; left: -50%; width: 200%; height: 200%;
  background: linear-gradient(45deg, transparent 40%, rgba(255,255,255,0.08) 50%, transparent 60%);
  transform: translateX(-100%);
  transition: transform .6s;
}
body.dark .form-submit:hover::after { transform: translateX(100%); }

/* ── Dark: fact icon ── */
body.dark .fact-icon {
  background: var(--surface-hover);
  border-color: var(--border);
}

/* ── Dark: scrollbar ── */
body.dark ::-webkit-scrollbar-thumb:hover { background: var(--ink-ghost); }

/* ── Dark: WhatsApp button enhanced ── */
body.dark .wa-btn {
  background: linear-gradient(135deg, #22C55E, #16A34A);
}

/* ── Dark: section divider ── */
body.dark .section-divider {
  background: linear-gradient(90deg, transparent, var(--border), transparent);
}

/* ── Dark: footer tweaks ── */
body.dark a.footer-contact-item:hover { color: var(--accent-neon); }