:root {
  --bg-dark: #010810;
  --bg-card: #0a1628;
  --bg-card-hover: #0f1f38;
  --neon: #2563eb;
  --neon-light: #3b82f6;
  --cyan: #06b6d4;
  --purple: #8b5cf6;
  --green: #10b981;
  --text: #e2e8f0;
  --text-dim: #94a3b8;
  --border: #1e3a5f;
  --glow: 0 0 40px rgba(37, 99, 235, .25);
  --radius: 16px;
  --transition: .3s cubic-bezier(.4, 0, .2, 1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body {
  font-family: 'Inter', sans-serif;
  background: var(--bg-dark);
  color: var(--text);
  overflow-x: hidden;
}

::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-dark); }
::-webkit-scrollbar-thumb { background: var(--neon); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--neon-light); }

.nav-blur {
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  background: rgba(1, 8, 16, .75);
  border-bottom: 1px solid rgba(37, 99, 235, .15);
  transition: var(--transition);
}
.nav-blur.scrolled {
  background: rgba(1, 8, 16, .92);
  border-color: rgba(37, 99, 235, .3);
}

.btn-primary {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .75rem 2rem;
  background: linear-gradient(135deg, var(--neon), var(--neon-light));
  color: #fff;
  font-weight: 600;
  border-radius: 12px;
  transition: var(--transition);
  cursor: pointer;
  overflow: hidden;
  border: none;
}
.btn-primary::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, transparent, rgba(255,255,255,.15));
  opacity: 0;
  transition: var(--transition);
  pointer-events: none;
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(37,99,235,.4); }
.btn-primary:hover::after { opacity: 1; }

.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .75rem 2rem;
  border: 1px solid var(--neon);
  color: var(--neon-light);
  font-weight: 600;
  border-radius: 12px;
  transition: var(--transition);
  cursor: pointer;
  background: transparent;
}
.btn-outline:hover {
  background: rgba(37, 99, 235, .1);
  transform: translateY(-2px);
  box-shadow: 0 4px 20px rgba(37,99,235,.2);
}

.hero-gradient {
  background:
    radial-gradient(ellipse 70% 50% at 20% 50%, rgba(37,99,235,.12) 0%, transparent 70%),
    radial-gradient(ellipse 50% 60% at 80% 30%, rgba(139,92,246,.08) 0%, transparent 70%),
    var(--bg-dark);
}

.hero-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  animation: orbFloat 6s ease-in-out infinite alternate;
  pointer-events: none;
}
.hero-orb-1 { width: 400px; height: 400px; background: rgba(37,99,235,.15); top: -80px; left: -100px; }
.hero-orb-2 { width: 300px; height: 300px; background: rgba(139,92,246,.12); bottom: -60px; right: -80px; animation-delay: 2s; }

@keyframes orbFloat {
  to { transform: translate(30px, -20px) scale(1.05); }
}

.hero-grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(37,99,235,.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(37,99,235,.06) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 60% 50% at center, black, transparent);
  pointer-events: none;
}

.service-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  transition: var(--transition);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  height: 100%;
}
.service-card p {
  flex-grow: 1;
}
.service-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(37,99,235,.06), transparent);
  opacity: 0;
  transition: var(--transition);
  pointer-events: none;
}
.service-card:hover {
  border-color: var(--neon);
  transform: translateY(-4px);
  box-shadow: var(--glow);
}
.service-card:hover::before { opacity: 1; }

.icon-box {
  width: 56px; height: 56px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 14px;
  font-size: 1.5rem;
  margin-bottom: 1.25rem;
}

.process-step {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  text-align: center;
  transition: var(--transition);
}
.process-step:hover {
  border-color: var(--neon);
  transform: translateY(-3px);
  box-shadow: var(--glow);
}
.process-num {
  width: 48px; height: 48px;
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 1rem;
  border-radius: 50%;
  font-weight: 700;
  font-size: 1.25rem;
}

.portfolio-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
}
.portfolio-card:hover {
  border-color: var(--neon);
  transform: translateY(-5px);
  box-shadow: var(--glow);
}

.mockup-browser {
  background: #111827;
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid #1f2937;
}
.mockup-browser-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 14px;
  background: #0d1117;
  border-bottom: 1px solid #1f2937;
}
.mockup-browser-bar span {
  width: 10px; height: 10px;
  border-radius: 50%;
}
.mockup-browser-bar .dot-red { background: #ff5f57; }
.mockup-browser-bar .dot-yellow { background: #febc2e; }
.mockup-browser-bar .dot-green { background: #28c840; }
.mockup-browser-bar .url-bar {
  flex: 1;
  margin-left: 8px;
  padding: 4px 12px;
  background: #1a2332;
  border-radius: 6px;
  font-size: .75rem;
  color: var(--text-dim);
  font-family: 'JetBrains Mono', monospace;
  width: auto; height: auto;
}
.mockup-browser-body {
  padding: 1.5rem;
  min-height: 180px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #0f172a 0%, #1e1b4b 50%, #0f172a 100%);
}

.mockup-telegram {
  background: #0e1621;
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid #1f2937;
}
.mockup-tg-header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  background: #17212b;
  border-bottom: 1px solid #1f2937;
}
.mockup-tg-avatar {
  width: 32px; height: 32px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: .85rem;
}
.mockup-tg-body {
  padding: 1rem;
  min-height: 180px;
  display: flex;
  flex-direction: column;
  gap: .5rem;
}
.tg-bubble {
  max-width: 80%;
  padding: .5rem .75rem;
  border-radius: 10px;
  font-size: .85rem;
  line-height: 1.4;
}
.tg-bubble-user {
  align-self: flex-end;
  background: #2b5278;
  color: #e2e8f0;
  border-bottom-right-radius: 2px;
}
.tg-bubble-bot {
  align-self: flex-start;
  background: #182533;
  color: #e2e8f0;
  border-bottom-left-radius: 2px;
}

.result-stat {
  text-align: center;
  padding: 1.5rem 1rem;
  background: rgba(37, 99, 235, .06);
  border-radius: 12px;
  border: 1px solid rgba(37, 99, 235, .15);
}
.result-stat .stat-number {
  font-size: 2rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--neon-light), var(--cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.result-stat .stat-label {
  font-size: .85rem;
  color: var(--text-dim);
  margin-top: .25rem;
}

.tag {
  display: inline-block;
  padding: .25rem .75rem;
  border-radius: 50px;
  font-size: .75rem;
  font-weight: 500;
}
.tag-blue { background: rgba(37,99,235,.15); color: var(--neon-light); }
.tag-cyan { background: rgba(6,182,212,.15); color: var(--cyan); }
.tag-purple { background: rgba(139,92,246,.15); color: var(--purple); }
.tag-green { background: rgba(16,185,129,.15); color: var(--green); }

.form-input {
  width: 100%;
  padding: .875rem 1.25rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  color: var(--text);
  font-size: 1rem;
  transition: var(--transition);
  outline: none;
}
.form-input::placeholder { color: var(--text-dim); }
.form-input:focus { border-color: var(--neon); box-shadow: 0 0 0 3px rgba(37,99,235,.15); }

.chat-fab {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 60px; height: 60px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--neon), var(--purple));
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  box-shadow: 0 4px 20px rgba(37,99,235,.4);
  transition: var(--transition);
  z-index: 999;
  border: none;
  color: #fff;
  font-size: 1.5rem;
}
.chat-fab:hover { transform: scale(1.1); box-shadow: 0 6px 30px rgba(37,99,235,.5); }
.chat-fab .badge {
  position: absolute;
  top: -2px; right: -2px;
  width: 18px; height: 18px;
  background: var(--green);
  border-radius: 50%;
  border: 2px solid var(--bg-dark);
}

.chat-float-window {
  position: fixed;
  bottom: 100px;
  right: 24px;
  width: 380px;
  max-height: 500px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  display: none;
  flex-direction: column;
  z-index: 998;
  box-shadow: 0 20px 60px rgba(0,0,0,.5);
  overflow: hidden;
}
.chat-float-window.open { display: flex; }

.chat-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.25rem;
  background: rgba(37,99,235,.08);
  border-bottom: 1px solid var(--border);
}
.chat-header h4 { font-size: .95rem; font-weight: 600; }
.chat-close {
  width: 28px; height: 28px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 50%;
  background: rgba(255,255,255,.06);
  color: var(--text-dim);
  cursor: pointer;
  transition: var(--transition);
  border: none;
  font-size: 1rem;
}
.chat-close:hover { background: rgba(255,255,255,.12); color: #fff; }

.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: .75rem;
  max-height: 340px;
}
.chat-messages::-webkit-scrollbar { width: 4px; }
.chat-messages::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

.chat-msg {
  max-width: 85%;
  padding: .625rem .875rem;
  border-radius: 12px;
  font-size: .875rem;
  line-height: 1.5;
}
.chat-msg-bot {
  align-self: flex-start;
  background: rgba(37,99,235,.12);
  color: var(--text);
  border-bottom-left-radius: 4px;
}
.chat-msg-user {
  align-self: flex-end;
  background: var(--neon);
  color: #fff;
  border-bottom-right-radius: 4px;
}

.chat-input-row {
  display: flex;
  gap: .5rem;
  padding: .75rem 1rem;
  border-top: 1px solid var(--border);
  background: rgba(0,0,0,.2);
}
.chat-input-row input {
  flex: 1;
  padding: .5rem .75rem;
  background: var(--bg-dark);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: .875rem;
  outline: none;
}
.chat-input-row input:focus { border-color: var(--neon); }
.chat-input-row button {
  padding: .5rem 1rem;
  background: var(--neon);
  color: #fff;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  font-weight: 600;
  transition: var(--transition);
}
.chat-input-row button:hover { background: var(--neon-light); }

.chat-typing {
  display: flex;
  gap: 4px;
  padding: 8px 0;
  align-self: flex-start;
}
.chat-typing span {
  width: 6px; height: 6px;
  background: var(--text-dim);
  border-radius: 50%;
  animation: typingBounce .8s ease-in-out infinite;
}
.chat-typing span:nth-child(2) { animation-delay: .15s; }
.chat-typing span:nth-child(3) { animation-delay: .3s; }

@keyframes typingBounce {
  0%, 100% { transform: translateY(0); opacity: .4; }
  50% { transform: translateY(-6px); opacity: 1; }
}

.toast {
  position: fixed;
  bottom: 24px;
  left: 24px;
  padding: 1rem 1.5rem;
  border-radius: 12px;
  font-size: .9rem;
  font-weight: 500;
  transform: translateY(120%);
  opacity: 0;
  transition: all .4s cubic-bezier(.4, 0, .2, 1);
  z-index: 1000;
}
.toast.show { transform: translateY(0); opacity: 1; }
.toast-success { background: rgba(16,185,129,.15); border: 1px solid var(--green); color: var(--green); }
.toast-error { background: rgba(239,68,68,.15); border: 1px solid #ef4444; color: #ef4444; }

.fade-in-section {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity .7s ease-out, transform .7s ease-out;
}
.fade-in-section.visible {
  opacity: 1;
  transform: translateY(0);
}

.section-line {
  width: 60px; height: 3px;
  background: linear-gradient(90deg, var(--neon), var(--cyan));
  border-radius: 2px;
  margin: .75rem auto 0;
}

.footer-border { border-top: 1px solid rgba(37,99,235,.15); }

@media (max-width: 640px) {
  .chat-float-window {
    right: 12px;
    left: 12px;
    width: auto;
    bottom: 90px;
  }
  .chat-fab {
    bottom: 16px;
    right: 16px;
    width: 52px;
    height: 52px;
  }
}