/* ===== НЕЙРОМИКА v2 — Neural Engineering Aesthetic ===== */
/* Dark tech palette: deep space black + electric cyan + gold accent */

:root {
  --color-bg:        #080c14;
  --color-surface:   #0d1525;
  --color-surface2:  #111d33;
  --color-border:    rgba(0, 200, 255, 0.12);
  --color-primary:   #00c8ff;
  --color-primary2:  #0094cc;
  --color-gold:      #f0b429;
  --color-gold2:     #c98a00;
  --color-text:      #e8eef8;
  --color-text-muted:#8a9ab8;
  --color-text-dim:  #4a5878;
  --color-success:   #00e5a0;
  --color-danger:    #ff4b6e;

  --font-heading:    'Space Grotesk', 'Segoe UI', system-ui, sans-serif;
  --font-body:       'Inter', 'Segoe UI', system-ui, sans-serif;
  --font-mono:       'JetBrains Mono', 'Fira Code', monospace;

  --radius-sm:  6px;
  --radius-md:  12px;
  --radius-lg:  20px;
  --radius-xl:  32px;

  --shadow-glow:  0 0 40px rgba(0, 200, 255, 0.15);
  --shadow-gold:  0 0 30px rgba(240, 180, 41, 0.2);
  --shadow-card:  0 8px 40px rgba(0, 0, 0, 0.6);

  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== RESET ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }

body {
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

/* ===== GRID BACKGROUND ===== */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(0, 200, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 200, 255, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
  z-index: 0;
}

/* ===== NAVBAR ===== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(8, 12, 20, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
}

.navbar-logo {
  font-family: var(--font-heading);
  font-size: 18px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: linear-gradient(90deg, var(--color-primary), var(--color-gold));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.navbar-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  background: var(--color-primary);
  color: var(--color-bg);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: var(--transition);
}
.navbar-cta:hover {
  background: #33d4ff;
  transform: translateY(-1px);
  box-shadow: var(--shadow-glow);
}

/* ===== HERO ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 100px 24px 80px;
  overflow: hidden;
}

.hero-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
}
.hero-orb-1 {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(0, 200, 255, 0.12) 0%, transparent 70%);
  top: -100px;
  right: -100px;
}
.hero-orb-2 {
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(240, 180, 41, 0.08) 0%, transparent 70%);
  bottom: -50px;
  left: -100px;
}

.hero-inner {
  position: relative;
  z-index: 1;
  max-width: 720px;
  margin: 0 auto;
  text-align: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border: 1px solid rgba(0, 200, 255, 0.3);
  border-radius: 100px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-primary);
  background: rgba(0, 200, 255, 0.06);
  margin-bottom: 32px;
}

.hero-badge-dot {
  width: 6px;
  height: 6px;
  background: var(--color-primary);
  border-radius: 50%;
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.7); }
}

.hero-title {
  font-size: clamp(36px, 7vw, 72px);
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1.05;
  margin-bottom: 20px;
}

.hero-title .brand {
  display: block;
  background: linear-gradient(135deg, var(--color-primary) 0%, #00e5ff 40%, var(--color-gold) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: clamp(16px, 2.5vw, 22px);
  color: var(--color-text-muted);
  font-weight: 400;
  margin-bottom: 16px;
  letter-spacing: 0.05em;
}

.hero-subtitle strong {
  color: var(--color-gold);
  font-weight: 700;
}

.hero-tagline {
  font-size: clamp(13px, 1.8vw, 15px);
  font-family: var(--font-mono);
  color: var(--color-text-dim);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 48px;
  padding: 12px 24px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  display: inline-block;
  background: rgba(0, 200, 255, 0.03);
}

.hero-cta-group {
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: center;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 16px 36px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary2));
  color: #000;
  font-weight: 800;
  font-size: 15px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border-radius: var(--radius-md);
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  width: 100%;
  max-width: 360px;
  position: relative;
  overflow: hidden;
}

.btn-primary::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.1), transparent);
  opacity: 0;
  transition: var(--transition);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(0, 200, 255, 0.4);
}
.btn-primary:hover::after { opacity: 1; }

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  background: transparent;
  color: var(--color-text);
  font-weight: 600;
  font-size: 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition);
  width: 100%;
  max-width: 360px;
}
.btn-secondary:hover {
  border-color: rgba(0, 200, 255, 0.4);
  color: var(--color-primary);
  background: rgba(0, 200, 255, 0.05);
}

/* ===== SECTION BASE ===== */
section { position: relative; z-index: 1; }

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

.section-label {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.section-label::before {
  content: '';
  display: block;
  width: 24px;
  height: 1px;
  background: var(--color-primary);
}

.section-title {
  font-size: clamp(28px, 5vw, 52px);
  margin-bottom: 20px;
}

.section-desc {
  font-size: clamp(15px, 2vw, 18px);
  color: var(--color-text-muted);
  max-width: 600px;
  line-height: 1.7;
}

/* ===== STATS BAND ===== */
.stats-band {
  padding: 60px 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  text-align: center;
}

.stat-item {}

.stat-number {
  font-family: var(--font-heading);
  font-size: clamp(36px, 6vw, 64px);
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1;
  background: linear-gradient(135deg, var(--color-primary), var(--color-gold));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 8px;
}

.stat-label {
  font-size: 13px;
  color: var(--color-text-muted);
  line-height: 1.4;
  font-weight: 500;
}

/* ===== PROBLEM SECTION ===== */
.section-problem {
  padding: 100px 0;
}

.problem-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 48px 32px;
  position: relative;
  overflow: hidden;
}

.problem-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--color-primary), transparent);
}

.problem-text {
  font-size: clamp(17px, 2.5vw, 22px);
  line-height: 1.8;
  color: var(--color-text);
  font-weight: 400;
}

.problem-text .highlight {
  color: var(--color-primary);
  font-weight: 700;
}

.problem-text .gold {
  color: var(--color-gold);
  font-weight: 700;
}

/* ===== METRICS SECTION ===== */
.section-metrics {
  padding: 100px 0;
  background: linear-gradient(180deg, transparent 0%, rgba(0, 200, 255, 0.02) 50%, transparent 100%);
}

.metrics-header { margin-bottom: 60px; }

.metrics-grid {
  display: grid;
  gap: 20px;
}

.metric-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 20px;
  align-items: start;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.metric-card::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(135deg, rgba(0, 200, 255, 0.04) 0%, transparent 60%);
  opacity: 0;
  transition: var(--transition);
}

.metric-card:hover {
  border-color: rgba(0, 200, 255, 0.3);
  transform: translateY(-4px);
  box-shadow: var(--shadow-card), var(--shadow-glow);
}
.metric-card:hover::after { opacity: 1; }

.metric-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 24px;
}

.metric-icon.cyan { background: rgba(0, 200, 255, 0.12); }
.metric-icon.gold { background: rgba(240, 180, 41, 0.12); }
.metric-icon.green { background: rgba(0, 229, 160, 0.12); }

.metric-body {}

.metric-title {
  font-family: var(--font-heading);
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--color-text);
}

.metric-kpi {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--color-primary);
  background: rgba(0, 200, 255, 0.08);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  display: inline-block;
  margin-bottom: 12px;
}

.metric-kpi.gold-kpi {
  color: var(--color-gold);
  background: rgba(240, 180, 41, 0.08);
}
.metric-kpi.green-kpi {
  color: var(--color-success);
  background: rgba(0, 229, 160, 0.08);
}

.metric-desc {
  font-size: 15px;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ===== OFFERS SECTION ===== */
.section-offers {
  padding: 100px 0;
}

.offers-header { margin-bottom: 60px; }

.offers-grid {
  display: grid;
  gap: 24px;
}

.offer-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 40px 32px;
  position: relative;
  overflow: hidden;
  transition: var(--transition);
}

.offer-card.featured {
  border-color: rgba(240, 180, 41, 0.4);
  background: linear-gradient(145deg, var(--color-surface) 0%, rgba(240, 180, 41, 0.04) 100%);
}

.offer-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--color-primary);
  border-radius: 0 0 0 var(--radius-xl);
}

.offer-card.featured::before {
  background: linear-gradient(180deg, var(--color-gold), var(--color-gold2));
}

.offer-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card);
}

.offer-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  border-radius: 100px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 20px;
}

.offer-tag.tag-cyan {
  background: rgba(0, 200, 255, 0.1);
  color: var(--color-primary);
  border: 1px solid rgba(0, 200, 255, 0.2);
}

.offer-tag.tag-gold {
  background: rgba(240, 180, 41, 0.1);
  color: var(--color-gold);
  border: 1px solid rgba(240, 180, 41, 0.2);
}

.offer-number {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-text-dim);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.offer-title {
  font-size: clamp(22px, 3.5vw, 28px);
  font-weight: 800;
  margin-bottom: 12px;
  color: var(--color-text);
}

.offer-desc {
  font-size: 15px;
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: 28px;
}

.offer-details {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 32px;
}

.offer-detail {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 14px;
}

.offer-detail-icon {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: rgba(0, 200, 255, 0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 1px;
}

.offer-card.featured .offer-detail-icon {
  background: rgba(240, 180, 41, 0.12);
}

.offer-detail-label {
  color: var(--color-text-dim);
  min-width: 70px;
  font-weight: 500;
}

.offer-detail-value {
  color: var(--color-text);
  flex: 1;
}

.offer-price {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin-bottom: 24px;
}

.offer-price-value {
  font-family: var(--font-heading);
  font-size: clamp(32px, 5vw, 44px);
  font-weight: 900;
  color: var(--color-primary);
  letter-spacing: -0.02em;
}

.offer-card.featured .offer-price-value {
  color: var(--color-gold);
}

.offer-price-note {
  font-size: 14px;
  color: var(--color-text-dim);
}

/* ===== FORM SECTION ===== */
.section-form {
  padding: 100px 0;
  background: linear-gradient(180deg, transparent 0%, rgba(0, 200, 255, 0.03) 50%, transparent 100%);
}

.form-wrapper {
  max-width: 600px;
  margin: 0 auto;
}

.form-header { margin-bottom: 48px; text-align: center; }

.form-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 48px 32px;
  position: relative;
  overflow: hidden;
}

.form-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-gold));
}

.form-field {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-dim);
  margin-bottom: 8px;
}

.form-input {
  width: 100%;
  padding: 14px 16px;
  background: var(--color-surface2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  font-size: 15px;
  font-family: var(--font-body);
  transition: var(--transition);
  outline: none;
}

.form-input::placeholder { color: var(--color-text-dim); }

.form-input:focus {
  border-color: rgba(0, 200, 255, 0.5);
  box-shadow: 0 0 0 3px rgba(0, 200, 255, 0.08);
}

.form-checkbox-wrap {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 28px;
  cursor: pointer;
}

.form-checkbox {
  width: 18px;
  height: 18px;
  border: 1.5px solid rgba(0, 200, 255, 0.4);
  border-radius: 4px;
  background: transparent;
  flex-shrink: 0;
  margin-top: 2px;
  cursor: pointer;
  accent-color: var(--color-primary);
}

.form-checkbox-text {
  font-size: 13px;
  color: var(--color-text-muted);
  line-height: 1.5;
}

.form-checkbox-text a {
  color: var(--color-primary);
  text-decoration: none;
  transition: var(--transition);
}
.form-checkbox-text a:hover { text-decoration: underline; }

.form-submit {
  width: 100%;
  padding: 16px;
  background: linear-gradient(135deg, var(--color-primary), #00a8d4);
  color: #000;
  font-weight: 800;
  font-size: 15px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.form-submit:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(0, 200, 255, 0.4);
}

.form-submit:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.form-submit-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
}

/* ===== FOOTER ===== */
.footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: 60px 0 40px;
  position: relative;
  z-index: 1;
}

.footer-grid {
  display: grid;
  gap: 40px;
  margin-bottom: 48px;
}

.footer-brand-name {
  font-family: var(--font-heading);
  font-size: 22px;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  background: linear-gradient(90deg, var(--color-primary), var(--color-gold));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 12px;
}

.footer-brand-desc {
  font-size: 13px;
  color: var(--color-text-muted);
  line-height: 1.6;
  max-width: 260px;
}

.footer-col-title {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-text-dim);
  margin-bottom: 16px;
}

.footer-contact-item {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
  font-size: 14px;
  color: var(--color-text-muted);
}

.footer-contact-item a {
  color: var(--color-text-muted);
  text-decoration: none;
  transition: var(--transition);
}
.footer-contact-item a:hover { color: var(--color-primary); }

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-link {
  font-size: 13px;
  color: var(--color-text-muted);
  text-decoration: none;
  transition: var(--transition);
}
.footer-link:hover { color: var(--color-primary); }

.footer-socials {
  display: flex;
  gap: 12px;
  margin-top: 20px;
}

.social-btn {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  background: var(--color-surface2);
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  transition: var(--transition);
  color: var(--color-text-muted);
}
.social-btn:hover {
  border-color: rgba(0, 200, 255, 0.4);
  color: var(--color-primary);
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(0, 200, 255, 0.15);
}

.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding-top: 32px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: flex-start;
}

.footer-copy {
  font-size: 12px;
  color: var(--color-text-dim);
}

/* ===== ANIMATIONS ===== */
.fade-up {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.fade-up.visible {
  opacity: 1;
  transform: none;
}

.fade-up:nth-child(1) { transition-delay: 0s; }
.fade-up:nth-child(2) { transition-delay: 0.1s; }
.fade-up:nth-child(3) { transition-delay: 0.2s; }

/* Counter animation */
.counter { display: inline-block; }

/* ===== NEURAL NETWORK SVG ANIMATION ===== */
.neural-anim {
  position: absolute;  pointer-events: none;
  opacity: 0.15;
}

/* ===== RESPONSIVE ===== */
@media (min-width: 600px) {
  .hero-cta-group {
    flex-direction: row;
    justify-content: center;
  }
  .btn-primary, .btn-secondary {
    width: auto;
  }
}

@media (min-width: 768px) {
  .stats-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .metrics-grid {
    grid-template-columns: 1fr;
  }

  .offers-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr;
  }

  .footer-bottom {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
}

@media (min-width: 1024px) {
  .metrics-grid {
    grid-template-columns: 1fr;
    max-width: 800px;
    margin: 0 auto;
  }
}