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

:root {
  --bg: #06010f;
  --bg2: #090012;
  --bg3: #110020;
  --accent: #8b5cf6;
  --cyan: #22d3ee;
  --amber: #f59e0b;
  --green: #10b981;
  --pink: #ec4899;
  --text: #f5f3ff;
  --text2: #a89fc0;
  --radius: 20px;
  --radius-sm: 12px;
}

html { scroll-behavior: smooth; }

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

/* MESH GRADIENT BACKGROUND */
body::before {
  content: '';
  position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background:
    radial-gradient(ellipse 80% 50% at 20% 20%, rgba(139,92,246,.18) 0%, transparent 60%),
    radial-gradient(ellipse 60% 60% at 80% 10%, rgba(34,211,238,.12) 0%, transparent 60%),
    radial-gradient(ellipse 50% 70% at 50% 90%, rgba(236,72,153,.1) 0%, transparent 60%),
    radial-gradient(ellipse 40% 40% at 90% 80%, rgba(245,158,11,.08) 0%, transparent 50%);
}

.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* NAV */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  padding: 18px 0;
  background: rgba(6,1,15,0.6);
  backdrop-filter: blur(24px) saturate(180%);
  border-bottom: 1px solid rgba(139,92,246,.12);
  transition: all .3s;
}
.nav--scrolled { padding: 12px 0; background: rgba(6,1,15,0.92); }
.nav__inner { display: flex; align-items: center; gap: 32px; position: relative; z-index: 1; }
.logo { font-size: 1.5rem; font-weight: 900; color: var(--text); text-decoration: none; letter-spacing: -0.5px; }
.logo span {
  background: linear-gradient(90deg, #a78bfa, #22d3ee);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.nav__links { display: flex; gap: 32px; list-style: none; margin: 0 auto; }
.nav__links a { color: var(--text2); text-decoration: none; font-weight: 500; transition: color .2s; font-size: .95rem; }
.nav__links a:hover { color: var(--text); }
.nav__actions { display: flex; align-items: center; gap: 12px; }
.burger { display: none; background: none; border: none; color: var(--text); font-size: 1.5rem; cursor: pointer; }

/* BUTTONS */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 12px 26px; border-radius: var(--radius-sm);
  font-weight: 700; font-size: .95rem; text-decoration: none;
  cursor: pointer; border: none; transition: all .25s; position: relative;
}
.btn--primary {
  background: linear-gradient(135deg, #7c3aed, #a855f7, #06b6d4);
  background-size: 200%; color: #fff;
  box-shadow: 0 0 30px rgba(139,92,246,.5), 0 4px 20px rgba(0,0,0,.3);
  animation: btn-gradient 3s ease infinite;
}
@keyframes btn-gradient {
  0%,100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}
.btn--primary:hover { transform: translateY(-3px); box-shadow: 0 0 50px rgba(139,92,246,.7), 0 8px 30px rgba(0,0,0,.4); }
.btn--ghost { background: rgba(139,92,246,.1); color: var(--text); border: 1px solid rgba(139,92,246,.25); }
.btn--ghost:hover { background: rgba(139,92,246,.2); border-color: rgba(139,92,246,.5); transform: translateY(-2px); }
.btn--outline { background: transparent; color: #a78bfa; border: 2px solid rgba(139,92,246,.4); }
.btn--outline:hover { background: rgba(139,92,246,.12); border-color: #a78bfa; box-shadow: 0 0 24px rgba(139,92,246,.3); transform: translateY(-2px); }
.btn--lg { padding: 16px 38px; font-size: 1.05rem; border-radius: 14px; }
.btn--full { width: 100%; }
.btn-lang { background: rgba(139,92,246,.1); color: var(--text2); border: 1px solid rgba(139,92,246,.2); padding: 7px 16px; border-radius: var(--radius-sm); cursor: pointer; font-weight: 700; transition: all .2s; font-size: .85rem; }
.btn-lang:hover { color: #a78bfa; border-color: rgba(139,92,246,.5); }

/* HERO */
.hero {
  min-height: 100vh; display: flex; align-items: center;
  position: relative; padding: 140px 0 100px; overflow: hidden;
}
.hero__content { position: relative; z-index: 1; max-width: 680px; }

.badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: linear-gradient(135deg, rgba(139,92,246,.25), rgba(34,211,238,.15));
  border: 1px solid rgba(139,92,246,.4);
  color: #c4b5fd; padding: 8px 20px; border-radius: 100px;
  font-size: .85rem; font-weight: 700; margin-bottom: 28px;
  box-shadow: 0 0 24px rgba(139,92,246,.2);
  animation: badge-pulse 3s ease-in-out infinite;
}
@keyframes badge-pulse {
  0%,100% { box-shadow: 0 0 24px rgba(139,92,246,.2); }
  50% { box-shadow: 0 0 40px rgba(139,92,246,.4); }
}

.hero h1 {
  font-size: clamp(2.6rem, 5.5vw, 4.4rem);
  font-weight: 900; line-height: 1.1; margin-bottom: 24px;
  letter-spacing: -2px;
}
.highlight {
  position: relative; display: inline-block;
  background: linear-gradient(90deg, #a78bfa, #22d3ee, #f472b6, #a78bfa);
  background-size: 300%;
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
  animation: text-gradient 4s linear infinite;
}
@keyframes text-gradient { to { background-position: 300% center; } }

.hero__sub { font-size: 1.15rem; color: var(--text2); margin-bottom: 42px; line-height: 1.75; }
.hero__btns { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 70px; }

.hero__stats { display: flex; gap: 52px; flex-wrap: wrap; }
.stat__num {
  font-size: 2.6rem; font-weight: 900; letter-spacing: -2px; display: block;
  background: linear-gradient(135deg, #fff 40%, #c4b5fd);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.stat__label { font-size: .82rem; color: var(--text2); margin-top: 2px; display: block; }

/* HERO DRONE VISUAL */
.hero__visual {
  position: absolute; right: 2%; top: 50%; transform: translateY(-50%);
  width: 480px; height: 480px; pointer-events: none; z-index: 1;
}
.drone-ring {
  position: absolute; border-radius: 50%;
  animation: spin-slow linear infinite;
}
.drone-ring:nth-child(1) {
  inset: 0; border: 1px solid rgba(139,92,246,.2);
  animation-duration: 20s;
  box-shadow: inset 0 0 60px rgba(139,92,246,.05);
}
.drone-ring:nth-child(2) {
  inset: 70px; border: 1px solid rgba(34,211,238,.2);
  animation-duration: 14s; animation-direction: reverse;
}
.drone-ring:nth-child(3) {
  inset: 140px; border: 1px solid rgba(245,158,11,.15);
  animation-duration: 9s;
}
@keyframes spin-slow { to { transform: rotate(360deg); } }

.drone-emoji {
  position: absolute; top: 50%; left: 50%;
  transform: translate(-50%,-50%);
  font-size: 7rem;
  filter: drop-shadow(0 0 40px rgba(139,92,246,.9)) drop-shadow(0 0 80px rgba(34,211,238,.5));
  animation: drone-float 3.5s ease-in-out infinite;
}
@keyframes drone-float {
  0%,100% { transform: translate(-50%,-50%) rotate(-6deg); }
  50% { transform: translate(-50%,-52%) rotate(6deg); }
}

.drone-dot {
  position: absolute; width: 10px; height: 10px; border-radius: 50%;
}
.drone-dot:nth-child(5) {
  top: 10px; left: 50%;
  background: #a78bfa;
  box-shadow: 0 0 16px #a78bfa, 0 0 32px rgba(167,139,250,.5);
  animation: dot-blink 2s ease-in-out infinite;
}
.drone-dot:nth-child(6) {
  top: 50%; right: 10px;
  background: #22d3ee;
  box-shadow: 0 0 16px #22d3ee, 0 0 32px rgba(34,211,238,.5);
  animation: dot-blink 2.5s ease-in-out infinite .5s;
}
.drone-dot:nth-child(7) {
  bottom: 60px; left: 25%;
  background: #f59e0b;
  box-shadow: 0 0 16px #f59e0b, 0 0 32px rgba(245,158,11,.5);
  animation: dot-blink 3s ease-in-out infinite 1s;
}
@keyframes dot-blink {
  0%,100% { opacity: 1; transform: scale(1); }
  50% { opacity: .2; transform: scale(.4); }
}

/* SECTION */
.section { padding: 110px 0; position: relative; z-index: 1; }
.section--dark {
  background: linear-gradient(180deg, rgba(9,0,18,.9) 0%, rgba(6,1,15,.6) 100%);
  backdrop-filter: blur(1px);
}
.section--dark::before, .section--dark::after {
  content: ''; position: absolute; left: 0; right: 0; height: 1px;
  background: linear-gradient(90deg, transparent 0%, rgba(139,92,246,.3) 30%, rgba(34,211,238,.3) 70%, transparent 100%);
}
.section--dark::before { top: 0; }
.section--dark::after { bottom: 0; }

.section__head { text-align: center; margin-bottom: 70px; }
.section__tag {
  display: inline-block;
  background: linear-gradient(135deg, rgba(139,92,246,.2), rgba(34,211,238,.1));
  border: 1px solid rgba(139,92,246,.3); color: #c4b5fd;
  padding: 5px 18px; border-radius: 100px;
  font-size: .78rem; font-weight: 800; margin-bottom: 14px; letter-spacing: 1px; text-transform: uppercase;
}
.section__head h2 { font-size: clamp(2rem, 4vw, 3.2rem); font-weight: 900; letter-spacing: -1px; }
.section__head p { color: var(--text2); margin-top: 14px; font-size: 1.05rem; }

/* CARDS */
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 24px; }
.card {
  background: linear-gradient(145deg, rgba(17,0,32,.9), rgba(9,0,18,.7));
  border-radius: var(--radius); padding: 40px;
  transition: transform .35s, box-shadow .35s;
  position: relative; overflow: hidden;
  backdrop-filter: blur(10px);
}
.card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px;
  border-radius: var(--radius) var(--radius) 0 0;
}
.card--blue { border: 1px solid rgba(34,211,238,.15); }
.card--blue::before { background: linear-gradient(90deg, #06b6d4, #22d3ee, #0ea5e9); }
.card--purple { border: 1px solid rgba(139,92,246,.2); }
.card--purple::before { background: linear-gradient(90deg, #7c3aed, #a855f7, #c084fc); }
.card--green { border: 1px solid rgba(16,185,129,.15); }
.card--green::before { background: linear-gradient(90deg, #059669, #10b981, #34d399); }

.card--featured {
  border-color: rgba(139,92,246,.35) !important;
  box-shadow: 0 0 60px rgba(139,92,246,.12), inset 0 0 60px rgba(139,92,246,.03);
}
.card:hover {
  transform: translateY(-10px);
  box-shadow: 0 30px 70px rgba(0,0,0,.5), 0 0 50px rgba(139,92,246,.12);
}
.card__badge {
  position: absolute; top: -1px; right: 20px;
  background: linear-gradient(135deg, #7c3aed, #a855f7);
  color: #fff; padding: 6px 18px;
  border-radius: 0 0 12px 12px;
  font-size: .75rem; font-weight: 800; letter-spacing: .5px;
  box-shadow: 0 8px 24px rgba(139,92,246,.5);
}
.card__icon { font-size: 3rem; margin-bottom: 22px; display: block; }
.card h3 { font-size: 1.3rem; font-weight: 800; margin-bottom: 12px; }
.card p { color: var(--text2); margin-bottom: 26px; font-size: .95rem; line-height: 1.7; }
.card__list { list-style: none; display: flex; flex-direction: column; gap: 11px; }
.card__list li { color: var(--text2); font-size: .9rem; padding-left: 22px; position: relative; }
.card__list li::before { content: '›'; position: absolute; left: 0; font-size: 1.1rem; color: #a78bfa; font-weight: 700; }

/* STEPS */
.steps { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 48px; }
.step__num {
  font-size: 4.5rem; font-weight: 900; line-height: 1; margin-bottom: 20px; display: block;
  background: linear-gradient(135deg, #a78bfa, #22d3ee);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.step__content h3 { font-size: 1.2rem; font-weight: 800; margin-bottom: 10px; }
.step__content p { color: var(--text2); font-size: .95rem; line-height: 1.7; }

/* PRICING */
.pricing { display: grid; grid-template-columns: repeat(auto-fit, minmax(290px, 1fr)); gap: 24px; align-items: center; }
.price-card {
  background: linear-gradient(145deg, rgba(17,0,32,.9), rgba(9,0,18,.8));
  border: 1px solid rgba(139,92,246,.12);
  border-radius: var(--radius); padding: 42px;
  position: relative; transition: transform .3s, box-shadow .3s;
  backdrop-filter: blur(10px);
}
.price-card:hover { transform: translateY(-6px); box-shadow: 0 24px 60px rgba(0,0,0,.5); }
.price-card--featured {
  border-color: rgba(139,92,246,.45);
  transform: scale(1.05);
  box-shadow: 0 0 80px rgba(139,92,246,.2), 0 24px 60px rgba(0,0,0,.4);
  background: linear-gradient(145deg, rgba(30,5,60,.95), rgba(17,0,32,.9));
}
.price-card--featured:hover { transform: scale(1.05) translateY(-6px); }
.price-card__badge {
  position: absolute; top: -16px; left: 50%; transform: translateX(-50%);
  background: linear-gradient(135deg, #7c3aed, #a855f7);
  color: #fff; padding: 7px 22px;
  border-radius: 100px; font-size: .78rem; font-weight: 800;
  white-space: nowrap; box-shadow: 0 4px 24px rgba(139,92,246,.6); letter-spacing: .5px;
}
.price-card h3 { font-size: .9rem; font-weight: 800; color: var(--text2); margin-bottom: 22px; letter-spacing: 1.5px; text-transform: uppercase; }
.price-card__price { display: flex; align-items: baseline; gap: 8px; margin-bottom: 34px; }
.price-card__amount {
  font-size: 4rem; font-weight: 900; letter-spacing: -3px;
  background: linear-gradient(135deg, #fff, #c4b5fd);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.price-card__per { color: var(--text2); font-size: .88rem; }
.price-card__features { list-style: none; display: flex; flex-direction: column; gap: 14px; margin-bottom: 38px; }
.price-card__features li { font-size: .93rem; color: var(--text2); }

/* CONTACT */
.contact-grid { display: grid; grid-template-columns: 1fr 1.3fr; gap: 64px; align-items: start; }
.contact-info { display: flex; flex-direction: column; gap: 34px; }
.contact-item { display: flex; gap: 18px; align-items: flex-start; }
.contact-item__icon { font-size: 2rem; flex-shrink: 0; }
.contact-item strong { display: block; font-weight: 800; margin-bottom: 5px; }
.contact-item p, .contact-item a { color: var(--text2); text-decoration: none; font-size: .95rem; }
.contact-item a:hover { color: #a78bfa; }

.contact-form {
  background: linear-gradient(145deg, rgba(17,0,32,.95), rgba(9,0,18,.9));
  border: 1px solid rgba(139,92,246,.2);
  border-radius: var(--radius); padding: 42px;
  box-shadow: 0 0 60px rgba(139,92,246,.07);
}
.form-group { margin-bottom: 22px; }
.form-group label { display: block; font-weight: 700; font-size: .88rem; margin-bottom: 9px; color: var(--text2); letter-spacing: .2px; }
.form-group input, .form-group select, .form-group textarea {
  width: 100%; background: rgba(139,92,246,.08);
  border: 1px solid rgba(139,92,246,.18);
  border-radius: var(--radius-sm);
  color: var(--text); padding: 13px 16px;
  font-family: inherit; font-size: .95rem;
  transition: border-color .2s, box-shadow .2s; outline: none;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  border-color: rgba(139,92,246,.6);
  box-shadow: 0 0 24px rgba(139,92,246,.18);
}
.form-group input::placeholder, .form-group textarea::placeholder { color: rgba(168,159,192,.35); }
.form-group select option { background: #110020; }
.form-group textarea { resize: vertical; }
.form-success {
  margin-top: 16px; padding: 16px;
  background: rgba(16,185,129,.1); border: 1px solid rgba(16,185,129,.3);
  border-radius: var(--radius-sm); color: #34d399; font-weight: 700; text-align: center;
}

/* FOOTER */
.footer { border-top: 1px solid rgba(139,92,246,.1); padding: 36px 0; background: rgba(6,1,15,.95); position: relative; z-index: 1; }
.footer__inner { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 16px; }
.footer p { color: var(--text2); font-size: .9rem; }
.footer a { color: #a78bfa; text-decoration: none; font-weight: 700; }
.footer a:hover { color: #22d3ee; }

/* TABS */
.tabs {
  display: flex; gap: 16px; margin-bottom: 36px;
  background: rgba(139,92,246,.06); border: 1px solid rgba(139,92,246,.15);
  border-radius: var(--radius); padding: 8px;
}
.tab {
  flex: 1; display: flex; flex-direction: column; align-items: center; gap: 4px;
  padding: 18px 24px; border-radius: 14px; cursor: pointer;
  border: 1px solid transparent; background: transparent;
  color: var(--text2); transition: all .3s; font-family: inherit;
}
.tab__icon { font-size: 2rem; }
.tab span:nth-child(2) { font-weight: 800; font-size: 1.1rem; color: inherit; }
.tab__sub { font-size: .78rem; color: var(--text2); opacity: .7; }
.tab--active {
  background: linear-gradient(135deg, rgba(139,92,246,.25), rgba(34,211,238,.1));
  border-color: rgba(139,92,246,.4);
  color: var(--text);
  box-shadow: 0 0 30px rgba(139,92,246,.15);
}
.tab--active .tab__sub { opacity: 1; color: #a78bfa; }

.fc-badge {
  display: flex; align-items: center; gap: 12px; flex-wrap: wrap;
  padding: 14px 20px; border-radius: var(--radius-sm);
  margin-bottom: 28px; font-size: .9rem;
}
.fc-badge--ardupilot {
  background: rgba(34,211,238,.08); border: 1px solid rgba(34,211,238,.2); color: #67e8f9;
}
.fc-badge--betaflight {
  background: rgba(245,158,11,.08); border: 1px solid rgba(245,158,11,.2); color: #fcd34d;
}
.fc-badge code {
  background: rgba(255,255,255,.1); padding: 3px 10px;
  border-radius: 6px; font-family: monospace; font-weight: 700;
}

/* PAYMENT POLICY */
.section--policy { padding: 0 0 80px; }
.policy-banner {
  background: linear-gradient(135deg, rgba(17,0,32,.98), rgba(30,5,60,.9));
  border: 1px solid rgba(139,92,246,.35);
  border-radius: var(--radius); padding: 48px;
  box-shadow: 0 0 80px rgba(139,92,246,.12), inset 0 0 80px rgba(139,92,246,.03);
  display: flex; flex-direction: column; gap: 32px;
}
.policy-banner__icon { font-size: 3rem; }
.policy-banner__content h3 {
  font-size: 1.8rem; font-weight: 900; margin-bottom: 10px;
  background: linear-gradient(135deg, #fff, #c4b5fd);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.policy-banner__content p { color: var(--text2); font-size: 1.05rem; }
.policy-banner__content strong { color: #f9a8d4; -webkit-text-fill-color: #f9a8d4; }

.policy-steps {
  display: flex; align-items: center; gap: 12px; flex-wrap: wrap;
}
.policy-step {
  display: flex; flex-direction: column; align-items: center; gap: 6px;
  background: rgba(139,92,246,.1); border: 1px solid rgba(139,92,246,.2);
  border-radius: 12px; padding: 14px 20px; min-width: 120px;
  font-size: .88rem; font-weight: 600; color: var(--text2); text-align: center;
}
.policy-step--pay {
  background: linear-gradient(135deg, rgba(139,92,246,.25), rgba(34,211,238,.15));
  border-color: rgba(139,92,246,.5);
  color: var(--text);
  box-shadow: 0 0 24px rgba(139,92,246,.2);
}
.policy-step__num {
  font-size: 1.4rem; font-weight: 900;
  background: linear-gradient(135deg, #a78bfa, #22d3ee);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.policy-arrow { color: rgba(139,92,246,.5); font-size: 1.4rem; font-weight: 300; }

.policy-guarantee {
  display: flex; align-items: center; gap: 12px;
  background: rgba(16,185,129,.08); border: 1px solid rgba(16,185,129,.2);
  border-radius: 12px; padding: 14px 20px;
  color: #6ee7b7; font-size: .95rem; font-weight: 600;
}

/* RESPONSIVE */
@media (max-width: 960px) {
  .nav__links { display: none; }
  .burger { display: block; }
  .hero__visual { display: none; }
  .contact-grid { grid-template-columns: 1fr; }
  .price-card--featured { transform: scale(1); }
}
@media (max-width: 600px) {
  .hero__stats { gap: 28px; }
  .hero__btns { flex-direction: column; }
  .btn--lg { width: 100%; text-align: center; }
}