/* ===== Reset & Base ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:        #0a0c10;
  --bg2:       #0f1117;
  --bg3:       #141820;
  --border:    rgba(255,255,255,.07);
  --text:      #c9d1e0;
  --text-dim:  #6b7a99;
  --accent:    #4f7cff;
  --accent2:   #7c3aed;
  --accent3:   #06b6d4;
  --gold:      #f59e0b;
  --radius:    12px;
  --transition: .3s cubic-bezier(.4,0,.2,1);
}

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  overflow-x: hidden;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== Nav ===== */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 18px 0;
  transition: background var(--transition), box-shadow var(--transition);
}
.nav.scrolled {
  background: rgba(10,12,16,.92);
  backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 var(--border);
}
.nav__inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav__logo {
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  color: #fff;
  font-size: 1.15rem;
  letter-spacing: .5px;
}
.nav__logo strong { color: var(--accent); }
.logo-icon {
  font-size: 1.4rem;
  animation: spin-slow 8s linear infinite;
  display: inline-block;
}
.nav__links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}
.nav__links a {
  color: var(--text-dim);
  text-decoration: none;
  font-size: .9rem;
  transition: color var(--transition);
}
.nav__links a:hover { color: #fff; }
.btn-nav {
  color: var(--accent) !important;
  border: 1px solid rgba(79,124,255,.4);
  padding: 7px 18px;
  border-radius: 6px;
  transition: background var(--transition), color var(--transition) !important;
}
.btn-nav:hover { background: var(--accent) !important; color: #fff !important; }

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
}
.hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
#particles { width: 100%; height: 100%; }

.hero__content {
  position: relative;
  z-index: 1;
  max-width: 740px;
  padding: 0 24px;
  animation: fadeUp .9s ease both;
}
.hero__badge {
  display: inline-block;
  font-size: .78rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent3);
  border: 1px solid rgba(6,182,212,.3);
  padding: 5px 16px;
  border-radius: 100px;
  margin-bottom: 28px;
  animation: fadeUp .9s .1s ease both;
}
.hero__title {
  font-size: clamp(2.4rem, 6vw, 4rem);
  font-weight: 700;
  line-height: 1.1;
  color: #fff;
  margin-bottom: 24px;
  animation: fadeUp .9s .2s ease both;
}
.gradient-text {
  background: linear-gradient(90deg, var(--accent), var(--accent2), var(--accent3));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero__sub {
  font-size: 1.1rem;
  color: var(--text-dim);
  margin-bottom: 40px;
  animation: fadeUp .9s .3s ease both;
}
.hero__cta {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  animation: fadeUp .9s .4s ease both;
}

.hero__scroll {
  position: absolute;
  bottom: 36px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  font-size: .72rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text-dim);
  z-index: 1;
  animation: fadeIn 1.5s 1s ease both;
}
.scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--accent), transparent);
  animation: scrollPulse 1.8s ease-in-out infinite;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 28px;
  border-radius: 8px;
  font-size: .95rem;
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
}
.btn--primary {
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  color: #fff;
  box-shadow: 0 4px 24px rgba(79,124,255,.3);
}
.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(79,124,255,.45);
}
.btn--ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}
.btn--ghost:hover {
  background: rgba(255,255,255,.05);
  border-color: rgba(255,255,255,.15);
  transform: translateY(-2px);
}
.btn--full { width: 100%; justify-content: center; }

/* ===== Section common ===== */
.section { padding: 96px 0; }
.section__header { margin-bottom: 56px; }
.section__tag {
  display: inline-block;
  font-size: .75rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 12px;
}
.section__title {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 700;
  color: #fff;
  line-height: 1.15;
}

/* ===== About ===== */
.about { background: var(--bg2); }
.about__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.about__text p {
  color: var(--text-dim);
  margin-bottom: 18px;
  font-size: 1.02rem;
  line-height: 1.75;
}
.about__stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.stat {
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 20px;
  text-align: center;
  transition: border-color var(--transition), transform var(--transition);
}
.stat:hover { border-color: rgba(79,124,255,.35); transform: translateY(-3px); }
.stat__num {
  font-size: 2.6rem;
  font-weight: 700;
  color: #fff;
  line-height: 1;
  margin-bottom: 6px;
}
.stat__num::after { content: '+'; color: var(--accent); }
.stat:nth-child(2) .stat__num::after { content: '%'; }
.stat:nth-child(4) .stat__num::after { content: '/7'; }
.stat__label { font-size: .82rem; color: var(--text-dim); text-transform: uppercase; letter-spacing: 1px; }

/* ===== Services ===== */
.services { background: var(--bg); }
.services__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
  opacity: 0;
  transform: translateY(30px);
}
.card.visible {
  opacity: 1;
  transform: translateY(0);
  transition: opacity .6s ease, transform .6s ease, border-color var(--transition), box-shadow var(--transition);
}
.card:hover {
  transform: translateY(-6px);
  border-color: rgba(79,124,255,.4);
  box-shadow: 0 12px 40px rgba(79,124,255,.1);
}
.card__icon {
  width: 52px;
  height: 52px;
  color: var(--accent);
  margin-bottom: 20px;
}
.card h3 {
  font-size: 1.1rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 10px;
}
.card p { font-size: .9rem; color: var(--text-dim); line-height: 1.65; }

/* ===== Stack Marquee ===== */
.stack { background: var(--bg2); overflow: hidden; }
.stack__marquee {
  position: relative;
  overflow: hidden;
  padding: 8px 0;
}
.stack__marquee::before,
.stack__marquee::after {
  content: '';
  position: absolute;
  top: 0; bottom: 0;
  width: 120px;
  z-index: 2;
}
.stack__marquee::before { left: 0; background: linear-gradient(to right, var(--bg2), transparent); }
.stack__marquee::after  { right: 0; background: linear-gradient(to left, var(--bg2), transparent); }
.marquee__track {
  display: flex;
  gap: 16px;
  animation: marquee 28s linear infinite;
  width: max-content;
}
.marquee__track span {
  display: inline-block;
  padding: 10px 20px;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 100px;
  font-size: .85rem;
  color: var(--text-dim);
  white-space: nowrap;
  transition: color var(--transition), border-color var(--transition);
}
.marquee__track span:hover { color: #fff; border-color: rgba(79,124,255,.4); }

/* ===== Contact ===== */
.contact { background: var(--bg); }
.contact__inner {
  max-width: 640px;
  margin: 0 auto;
  text-align: center;
}
.contact__sub {
  color: var(--text-dim);
  margin-bottom: 40px;
  font-size: 1rem;
}
.contact__form {
  display: flex;
  flex-direction: column;
  gap: 16px;
  text-align: left;
}
.form__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.contact__form input,
.contact__form textarea {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 13px 16px;
  color: var(--text);
  font-size: .95rem;
  font-family: inherit;
  width: 100%;
  transition: border-color var(--transition);
  resize: none;
}
.contact__form input:focus,
.contact__form textarea:focus {
  outline: none;
  border-color: rgba(79,124,255,.5);
  box-shadow: 0 0 0 3px rgba(79,124,255,.08);
}
.contact__form input::placeholder,
.contact__form textarea::placeholder { color: var(--text-dim); }

/* ===== Footer ===== */
.footer {
  background: var(--bg2);
  border-top: 1px solid var(--border);
  padding: 28px 0;
}
.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}
.footer__copy { font-size: .82rem; color: var(--text-dim); }

/* ===== Animations ===== */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}
@keyframes spin-slow {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}
@keyframes scrollPulse {
  0%, 100% { opacity: .3; transform: scaleY(.8); }
  50%       { opacity: 1;  transform: scaleY(1.1); }
}
@keyframes marquee {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

/* ===== Responsive ===== */
@media (max-width: 900px) {
  .services__grid { grid-template-columns: 1fr 1fr; }
  .about__grid { grid-template-columns: 1fr; gap: 40px; }
}
@media (max-width: 600px) {
  .services__grid { grid-template-columns: 1fr; }
  .form__row { grid-template-columns: 1fr; }
  .nav__links { display: none; }
  .about__stats { grid-template-columns: 1fr 1fr; }
}