/* =========================================================
   Online Industries — Modern UI
   Design system + components
   ========================================================= */

:root {
  /* Palette */
  --bg: #07070f;
  --bg-soft: #0d0d1c;
  --surface: rgba(255, 255, 255, 0.04);
  --surface-2: rgba(255, 255, 255, 0.07);
  --border: rgba(255, 255, 255, 0.10);
  --border-strong: rgba(255, 255, 255, 0.18);
  --text: #ececf5;
  --text-dim: #a3a3b8;
  --text-mute: #6f6f86;

  /* Accents */
  --c1: #6d5efc;   /* violet */
  --c2: #21d4fd;   /* cyan   */
  --c3: #b721ff;   /* magenta*/
  --ok: #2fe6a8;
  --amber: #ffcf5c;
  --red: #ff5d73;

  --grad: linear-gradient(120deg, var(--c1), var(--c2));
  --grad-soft: linear-gradient(120deg, rgba(109,94,252,.18), rgba(33,212,253,.18));

  /* Geometry */
  --radius: 18px;
  --radius-lg: 26px;
  --maxw: 1180px;
  --ease: cubic-bezier(.16, 1, .3, 1);

  --shadow: 0 20px 60px -20px rgba(0, 0, 0, .6);
  --glow: 0 0 0 1px var(--border), 0 18px 50px -18px rgba(109, 94, 252, .55);
}

/* Reset */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; padding: 0; }

.container { width: min(100% - 2.5rem, var(--maxw)); margin-inline: auto; }

h1, h2, h3, .brand-text { font-family: 'Space Grotesk', sans-serif; line-height: 1.1; }

/* =========================================================
   Animated background
   ========================================================= */
.bg-aurora {
  position: fixed; inset: 0; z-index: -2; overflow: hidden;
  background: radial-gradient(120% 120% at 50% -10%, #11112a 0%, var(--bg) 55%);
}
.orb {
  position: absolute; border-radius: 50%; filter: blur(70px); opacity: .5;
  animation: drift 22s var(--ease) infinite alternate;
}
.orb--1 { width: 42vw; height: 42vw; left: -8vw; top: -6vw; background: var(--c1); }
.orb--2 { width: 38vw; height: 38vw; right: -10vw; top: 8vw; background: var(--c2); animation-delay: -6s; }
.orb--3 { width: 34vw; height: 34vw; left: 30vw; bottom: -14vw; background: var(--c3); opacity: .35; animation-delay: -12s; }
.grid-overlay {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px);
  background-size: 54px 54px;
  mask-image: radial-gradient(120% 80% at 50% 0%, #000 30%, transparent 80%);
}
@keyframes drift {
  to { transform: translate3d(4vw, 5vh, 0) scale(1.12); }
}

/* Scroll progress */
.scroll-progress {
  position: fixed; top: 0; left: 0; height: 3px; width: 0%;
  background: var(--grad); z-index: 100; transition: width .1s linear;
  box-shadow: 0 0 12px rgba(33, 212, 253, .7);
}

/* =========================================================
   Header / Nav
   ========================================================= */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 50;
  padding: 1rem 0; transition: background .3s var(--ease), padding .3s var(--ease), border-color .3s;
  border-bottom: 1px solid transparent;
}
.site-header.scrolled {
  background: rgba(7, 7, 15, .72);
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  border-bottom-color: var(--border);
  padding: .6rem 0;
}
.nav-wrap { display: flex; align-items: center; justify-content: space-between; gap: 1rem; }

.brand { display: inline-flex; align-items: center; gap: .65rem; font-weight: 700; }
.brand-mark {
  display: grid; place-items: center; width: 38px; height: 38px; border-radius: 11px;
  background: var(--grad); color: #fff; font-family: 'Space Grotesk', sans-serif;
  font-weight: 700; letter-spacing: .5px; box-shadow: 0 8px 22px -8px rgba(109,94,252,.8);
}
.brand-text { font-size: 1.12rem; letter-spacing: -.3px; }
.brand-text span { color: var(--c2); }

.nav { display: flex; align-items: center; gap: .35rem; }
.nav-link {
  position: relative; padding: .55rem .9rem; border-radius: 10px; font-size: .94rem;
  color: var(--text-dim); font-weight: 500; transition: color .25s, background .25s;
}
.nav-link:hover { color: var(--text); background: var(--surface); }
.nav-link.active { color: var(--text); }
.nav-cta {
  background: var(--grad); color: #fff !important; font-weight: 600;
  box-shadow: 0 10px 24px -10px rgba(109,94,252,.9);
}
.nav-cta:hover { filter: brightness(1.08); transform: translateY(-1px); }

.nav-toggle {
  display: none; flex-direction: column; gap: 5px; width: 44px; height: 44px;
  background: var(--surface); border: 1px solid var(--border); border-radius: 12px;
  cursor: pointer; padding: 0 11px; align-items: center; justify-content: center;
}
.nav-toggle span { width: 20px; height: 2px; background: var(--text); border-radius: 2px; transition: .3s var(--ease); }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* =========================================================
   Buttons & shared bits
   ========================================================= */
.btn {
  display: inline-flex; align-items: center; gap: .55rem; cursor: pointer;
  padding: .85rem 1.5rem; border-radius: 999px; font-weight: 600; font-size: .96rem;
  border: 1px solid transparent; transition: transform .25s var(--ease), box-shadow .25s, background .25s, filter .25s;
  font-family: inherit;
}
.btn-primary { background: var(--grad); color: #fff; box-shadow: 0 14px 30px -12px rgba(109,94,252,.9); }
.btn-primary:hover { transform: translateY(-2px); filter: brightness(1.08); }
.btn-ghost { background: var(--surface); color: var(--text); border-color: var(--border-strong); }
.btn-ghost:hover { background: var(--surface-2); transform: translateY(-2px); }
.btn-arrow { transition: transform .25s var(--ease); }
.btn:hover .btn-arrow { transform: translateX(4px); }

.eyebrow {
  display: inline-flex; align-items: center; gap: .5rem; font-size: .8rem; font-weight: 600;
  letter-spacing: .14em; text-transform: uppercase; color: var(--text-dim);
  padding: .35rem .8rem; border: 1px solid var(--border); border-radius: 999px;
  background: var(--surface);
}
.eyebrow .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--c2); box-shadow: 0 0 10px var(--c2); }
.eyebrow--alert .dot { background: var(--red); box-shadow: 0 0 10px var(--red); animation: blink 1.4s infinite; }
@keyframes blink { 50% { opacity: .3; } }

.grad-text {
  background: linear-gradient(120deg, var(--c2), var(--c1), var(--c3));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}

/* =========================================================
   Layout / sections
   ========================================================= */
.section { padding: clamp(4rem, 9vw, 8rem) 0; position: relative; }
.section-head { max-width: 640px; margin-bottom: 3rem; }
.section-title { font-size: clamp(1.9rem, 4.5vw, 3rem); letter-spacing: -.02em; margin: 1rem 0 .8rem; }
.section-sub { color: var(--text-dim); font-size: 1.06rem; }

/* =========================================================
   Hero
   ========================================================= */
.hero { padding-top: clamp(7rem, 16vw, 11rem); }
.hero-grid {
  display: grid; grid-template-columns: 1.1fr .9fr; gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
}
.hero-title { font-size: clamp(2.6rem, 6.5vw, 4.6rem); letter-spacing: -.03em; margin: 1.2rem 0; }
.hero-lead { font-size: clamp(1.05rem, 2.2vw, 1.25rem); color: var(--text-dim); max-width: 34ch; }
.hero-actions { display: flex; flex-wrap: wrap; gap: .9rem; margin: 2rem 0 2.5rem; }

.hero-stats { display: flex; flex-wrap: wrap; gap: 2.2rem; }
.stat { display: flex; flex-direction: column; }
.stat-num {
  font-family: 'Space Grotesk', sans-serif; font-size: clamp(1.7rem, 4vw, 2.4rem); font-weight: 700;
  background: linear-gradient(120deg, #fff, var(--c2)); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.stat-label { font-size: .82rem; color: var(--text-mute); }

/* Hero visual */
.hero-visual { position: relative; display: grid; place-items: center; }
.glass-card {
  width: 100%; max-width: 420px; background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 1.1rem; backdrop-filter: blur(16px);
  box-shadow: var(--shadow); position: relative; overflow: hidden;
}
.glass-card::before {
  content: ""; position: absolute; inset: 0; border-radius: inherit; padding: 1px;
  background: linear-gradient(140deg, rgba(255,255,255,.35), transparent 40%);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude; pointer-events: none;
}
.card-float { animation: floaty 6s ease-in-out infinite; }
@keyframes floaty { 50% { transform: translateY(-12px); } }
.card-head { display: flex; align-items: center; gap: .5rem; padding: .3rem .4rem .9rem; }
.led { width: 11px; height: 11px; border-radius: 50%; }
.led--green { background: var(--ok); } .led--amber { background: var(--amber); } .led--red { background: var(--red); }
.card-title { margin-left: auto; font-size: .8rem; color: var(--text-mute); font-family: 'Space Grotesk', sans-serif; }
.code {
  font-family: ui-monospace, 'SF Mono', Menlo, monospace; font-size: .86rem; line-height: 1.8;
  background: rgba(0,0,0,.35); border-radius: 14px; padding: 1rem 1.1rem; color: var(--text-dim);
  white-space: pre-wrap; word-break: break-word;
}
.c-key { color: var(--c2); } .c-ok { color: var(--ok); } .c-dim { color: var(--text-mute); }

.floaty {
  position: absolute; padding: .6rem 1rem; border-radius: 14px; font-size: .85rem; font-weight: 600;
  background: var(--surface-2); border: 1px solid var(--border); backdrop-filter: blur(10px);
  box-shadow: var(--shadow); animation: floaty 5s ease-in-out infinite;
}
.floaty--1 { top: 6%; left: -4%; animation-delay: -1s; }
.floaty--2 { bottom: 8%; right: -3%; color: var(--ok); animation-delay: -2.5s; }

/* =========================================================
   Cards grid (services)
   ========================================================= */
.cards { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.2rem; }
.card {
  position: relative; background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 1.6rem 1.4rem; overflow: hidden;
  transition: transform .3s var(--ease), border-color .3s, background .3s;
}
.card:hover, .card:focus-visible {
  transform: translateY(-6px); border-color: var(--border-strong); background: var(--surface-2);
  outline: none;
}
.card-glow {
  position: absolute; width: 180px; height: 180px; border-radius: 50%;
  background: var(--grad); filter: blur(60px); opacity: 0; top: -40px; right: -40px;
  transition: opacity .4s; pointer-events: none;
}
.card:hover .card-glow, .card:focus-visible .card-glow { opacity: .35; }
.svc-icon {
  width: 54px; height: 54px; display: grid; place-items: center; font-size: 1.6rem;
  border-radius: 14px; background: var(--grad-soft); border: 1px solid var(--border); margin-bottom: 1rem;
}
.card h3 { font-size: 1.18rem; margin-bottom: .5rem; }
.card p { color: var(--text-dim); font-size: .95rem; }
.card strong { color: var(--c2); }

/* =========================================================
   Security section
   ========================================================= */
.section--security { background: linear-gradient(180deg, transparent, rgba(255,93,115,.04), transparent); }
.security-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: clamp(2rem, 5vw, 4rem); align-items: center; }
.check-list { display: grid; gap: .7rem; margin: 1.4rem 0; }
.check-list li { position: relative; padding-left: 2rem; color: var(--text-dim); }
.check-list li::before {
  content: "!"; position: absolute; left: 0; top: 1px; width: 22px; height: 22px;
  display: grid; place-items: center; border-radius: 50%; font-weight: 700; font-size: .8rem;
  color: #fff; background: linear-gradient(135deg, var(--red), var(--c3));
}

.threat-card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg);
  padding: 1.6rem; backdrop-filter: blur(16px); box-shadow: var(--shadow);
}
.threat-head {
  display: flex; align-items: center; gap: .6rem; font-family: 'Space Grotesk', sans-serif;
  font-weight: 600; margin-bottom: 1.2rem; font-size: 1.05rem;
}
.pulse { width: 11px; height: 11px; border-radius: 50%; background: var(--ok); position: relative; }
.pulse::after {
  content: ""; position: absolute; inset: -5px; border-radius: 50%; border: 2px solid var(--ok);
  animation: pulse 1.8s ease-out infinite; opacity: 0;
}
@keyframes pulse { 0% { transform: scale(.6); opacity: .8; } 100% { transform: scale(1.8); opacity: 0; } }
.threat-row {
  display: flex; justify-content: space-between; align-items: center; padding: .75rem 0;
  border-bottom: 1px solid var(--border); font-size: .95rem; color: var(--text-dim);
}
.badge { font-size: .78rem; font-weight: 600; padding: .25rem .7rem; border-radius: 999px; }
.badge--ok { color: var(--ok); background: rgba(47,230,168,.12); border: 1px solid rgba(47,230,168,.3); }
.badge--active { color: var(--c2); background: rgba(33,212,253,.12); border: 1px solid rgba(33,212,253,.3); }
.threat-meter { height: 8px; border-radius: 999px; background: rgba(255,255,255,.08); margin: 1.3rem 0 .6rem; overflow: hidden; }
.threat-meter span { display: block; height: 100%; width: var(--w); background: linear-gradient(90deg, var(--ok), var(--c2)); border-radius: inherit; }
.threat-foot { font-size: .82rem; color: var(--text-mute); }

/* =========================================================
   About
   ========================================================= */
.about-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: clamp(2rem, 5vw, 4rem); align-items: center; }
.pill-row { display: flex; flex-wrap: wrap; gap: .6rem; margin-top: 1.6rem; }
.pill {
  padding: .5rem 1rem; border-radius: 999px; font-size: .88rem; font-weight: 500;
  background: var(--surface); border: 1px solid var(--border); color: var(--text-dim);
}
.about-feature { display: grid; gap: 1.2rem; }
.feature-card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 1.6rem; transition: transform .3s var(--ease), border-color .3s;
}
.feature-card:hover { transform: translateY(-4px); border-color: var(--border-strong); }
.feature-card--accent { background: var(--grad-soft); }
.feature-num {
  font-family: 'Space Grotesk', sans-serif; font-size: 1.7rem; font-weight: 700; display: block; margin-bottom: .4rem;
  background: linear-gradient(120deg, #fff, var(--c2)); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.feature-card p { color: var(--text-dim); font-size: .95rem; }

/* =========================================================
   Contact
   ========================================================= */
.section--contact { padding-bottom: clamp(5rem, 10vw, 9rem); }
.contact-wrap {
  display: grid; grid-template-columns: .9fr 1.1fr; gap: clamp(2rem, 5vw, 4rem);
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg);
  padding: clamp(1.8rem, 4vw, 3.2rem); backdrop-filter: blur(16px); box-shadow: var(--shadow);
}
.contact-form { display: grid; grid-template-columns: 1fr 1fr; gap: 1.1rem; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.field { position: relative; }
.field--full { grid-column: 1 / -1; }
.field input, .field textarea {
  width: 100%; padding: 1.1rem 1rem .6rem; border-radius: 13px; font-family: inherit; font-size: .98rem;
  background: rgba(0,0,0,.25); border: 1px solid var(--border); color: var(--text); resize: vertical;
  transition: border-color .25s, box-shadow .25s, background .25s;
}
.field textarea { padding-top: 1.4rem; }
.field input:focus, .field textarea:focus {
  outline: none; border-color: var(--c1); background: rgba(0,0,0,.4);
  box-shadow: 0 0 0 3px rgba(109,94,252,.22);
}
.field label {
  position: absolute; left: 1rem; top: .9rem; color: var(--text-mute); font-size: .98rem;
  pointer-events: none; transition: .2s var(--ease);
}
.field input:focus + label, .field input:not(:placeholder-shown) + label,
.field textarea:focus + label, .field textarea:not(:placeholder-shown) + label {
  top: .35rem; font-size: .72rem; color: var(--c2); letter-spacing: .03em;
}
.form-foot { display: flex; align-items: center; gap: 1rem; flex-wrap: wrap; }
.form-note { font-size: .9rem; color: var(--text-dim); }
.form-note.ok { color: var(--ok); }
.form-note.err { color: var(--red); }

/* =========================================================
   Footer
   ========================================================= */
.site-footer { border-top: 1px solid var(--border); padding: 2.5rem 0; background: rgba(0,0,0,.25); }
.footer-grid { display: flex; align-items: center; justify-content: space-between; gap: 1.5rem; flex-wrap: wrap; }
.footer-brand { display: inline-flex; align-items: center; gap: .65rem; font-weight: 700; }
.footer-nav { display: flex; gap: 1.4rem; }
.footer-nav a { color: var(--text-dim); font-size: .92rem; transition: color .25s; }
.footer-nav a:hover { color: var(--text); }
.footer-copy { color: var(--text-mute); font-size: .85rem; }

/* =========================================================
   Reveal on scroll
   ========================================================= */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.in { opacity: 1; transform: none; }

/* =========================================================
   Responsive
   ========================================================= */
@media (max-width: 980px) {
  .hero-grid, .security-grid, .about-grid, .contact-wrap { grid-template-columns: 1fr; }
  .hero-visual { order: -1; max-width: 460px; margin-inline: auto; }
  .cards { grid-template-columns: repeat(2, 1fr); }
  .security-panel, .about-feature { max-width: 520px; }
}

@media (max-width: 720px) {
  .nav {
    position: fixed; inset: 0 0 auto 0; top: 0; flex-direction: column; align-items: stretch;
    gap: .4rem; padding: 6rem 1.5rem 2rem; background: rgba(7,7,15,.96);
    backdrop-filter: blur(18px); transform: translateY(-100%); transition: transform .4s var(--ease);
    border-bottom: 1px solid var(--border); height: auto;
  }
  .nav.open { transform: translateY(0); }
  .nav-link { padding: .9rem 1rem; font-size: 1.05rem; }
  .nav-cta { text-align: center; margin-top: .5rem; }
  .nav-toggle { display: flex; }
  .contact-form { grid-template-columns: 1fr; }
  .footer-grid { flex-direction: column; text-align: center; }
}

@media (max-width: 460px) {
  .cards { grid-template-columns: 1fr; }
  .hero-stats { gap: 1.4rem; }
  .floaty--1 { left: 0; } .floaty--2 { right: 0; }
}