:root {
  color-scheme: dark;
  --bg: #04060f;
  --surface: rgba(8, 12, 24, 0.85);
  --surface-soft: rgba(15, 20, 42, 0.72);
  --panel: rgba(10, 14, 28, 0.88);
  --text: #e4e9ff;
  --muted: #94a1c6;
  --primary: #8f5cff;
  --primary-soft: rgba(143, 92, 255, 0.18);
  --accent: #4fd8ff;
  --accent-soft: rgba(79, 216, 255, 0.1);
  --border: rgba(255, 255, 255, 0.1);
  --shadow: 0 24px 80px rgba(15, 15, 40, 0.24);
  --radius: 24px;
  --radius-sm: 18px;
  --transition: 280ms ease;
  font-family: 'Inter', sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background: radial-gradient(circle at top, rgba(143, 92, 255, 0.14), transparent 32%),
    radial-gradient(circle at 20% 20%, rgba(79, 216, 255, 0.08), transparent 24%),
    linear-gradient(180deg, #02030a 0%, #060914 100%);
  color: var(--text);
  overflow-x: hidden;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(circle at 20% 25%, rgba(143, 92, 255, 0.12), transparent 22%),
    radial-gradient(circle at 80% 10%, rgba(79, 216, 255, 0.08), transparent 20%);
}

canvas#particle-canvas {
  position: fixed;
  inset: 0;
  z-index: 0;
}

.page-shell,
.dashboard-shell,
.auth-shell,
.chat-shell {
  position: relative;
  z-index: 1;
}

.page-shell {
  max-width: 1400px;
  margin: 0 auto;
  padding: 36px 24px 60px;
}

.site-header,
.dashboard-header,
.site-footer,
.auth-shell,
.auth-form,
.hero-panel,
.feature-card,
.pricing-card,
.testimonial-slider,
.faq-accordion,
.cta-panel,
.dashboard-card,
.analytics-chart,
.analytics-details,
.activity-card,
.settings-card,
.contact-card,
.privacy-section {
  backdrop-filter: blur(24px);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.site-header,
.dashboard-header,
.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 22px 28px;
  border-radius: 32px;
  margin-bottom: 32px;
}

.site-header {
  position: sticky;
  top: 18px;
  z-index: 10;
  background: rgba(8, 10, 22, 0.86);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}

.site-nav a {
  color: var(--text);
  text-decoration: none;
  padding: 10px 14px;
  transition: color var(--transition), transform var(--transition);
}

.site-nav a:hover,
.site-nav a.active {
  color: var(--accent);
  transform: translateY(-1px);
}

.nav-toggle {
  display: none;
  border: none;
  background: transparent;
  color: var(--text);
  font-size: 24px;
}

.brand-block {
  display: flex;
  align-items: center;
  gap: 16px;
}

.logo-mark {
  width: 56px;
  height: 56px;
  border-radius: 18px;
  display: grid;
  place-items: center;
  background: rgba(143, 92, 255, 0.18);
  color: #fff;
  font-size: 28px;
  font-weight: 800;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.neon-glow {
  box-shadow: 0 0 22px rgba(143, 92, 255, 0.35);
}

.brand-title {
  margin: 0;
  font-size: 24px;
  letter-spacing: 0.12em;
}

.brand-tag,
.eyebrow,
.card-label,
.section-heading p,
.status-message {
  color: var(--muted);
}

.hero-section,
.features-section,
.pricing-section,
.testimonials-section,
.faq-section,
.cta-section,
.settings-grid,
.contact-grid,
.privacy-section,
.analytics-section,
.activity-section {
  margin-bottom: 40px;
}

.hero-section {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 36px;
  padding: 60px 0;
  align-items: center;
}

.hero-copy {
  max-width: 620px;
}

.eyebrow {
  display: inline-block;
  text-transform: uppercase;
  letter-spacing: 0.24em;
  font-size: 0.8125rem;
  margin-bottom: 20px;
  color: var(--accent);
}

.hero-title {
  margin: 0 0 24px;
  font-size: clamp(3rem, 5vw, 5.4rem);
  line-height: 0.95;
}

.hero-subtitle {
  margin: 0 0 28px;
  font-size: 1.05rem;
  line-height: 1.85;
  max-width: 620px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 28px;
}

.hero-keywords {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.hero-keywords span {
  font-size: 0.9rem;
  color: var(--text);
  border: 1px solid rgba(255, 255, 255, 0.08);
  padding: 10px 12px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.03);
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: none;
  border-radius: 999px;
  padding: 14px 28px;
  cursor: pointer;
  font-weight: 600;
  transition: transform var(--transition), background var(--transition), box-shadow var(--transition);
}

.button:hover {
  transform: translateY(-2px);
}

.button-primary {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  box-shadow: 0 18px 40px rgba(143, 92, 255, 0.2);
}

.button-secondary,
.button-outline {
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.button-outline:hover {
  border-color: var(--accent);
}

.hero-visual {
  position: relative;
  min-height: 520px;
  display: grid;
  place-items: center;
}

.ai-orb {
  position: relative;
  width: 340px;
  height: 340px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: radial-gradient(circle at center, rgba(143, 92, 255, 0.2), transparent 55%);
  box-shadow: 0 0 160px rgba(143, 92, 255, 0.14);
}

.orb-core,
.orb-ring,
.orb-wave {
  position: absolute;
  border-radius: 50%;
}

.orb-core {
  inset: 26%;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.92), rgba(143, 92, 255, 0.35));
  filter: blur(1px);
}

.orb-ring {
  inset: 14%;
  border: 1px solid rgba(143, 92, 255, 0.42);
  animation: spin-slow 14s linear infinite;
}

.orb-wave {
  inset: 6%;
  border: 2px dashed rgba(79, 216, 255, 0.24);
  animation: pulse-blob 4.6s ease-in-out infinite;
}

.glass-panel {
  background: rgba(8, 12, 24, 0.72);
}

.section-heading {
  max-width: 620px;
  margin-bottom: 24px;
}

.section-heading h2 {
  margin: 12px 0 0;
  font-size: clamp(2rem, 3vw, 3rem);
}

.feature-grid,
.pricing-grid,
.activity-cards,
.contact-grid,
.settings-grid {
  display: grid;
  gap: 24px;
}

.feature-grid,
.pricing-grid {
  grid-template-columns: repeat(3, minmax(240px, 1fr));
}

.feature-card,
.pricing-card,
.activity-card,
.settings-card,
.contact-card {
  padding: 28px;
  border-radius: var(--radius);
}

.feature-card h3,
.pricing-card h3,
.activity-card h3,
.settings-card h2,
.contact-card h3 {
  margin-top: 0;
}

.feature-card p,
.pricing-card p,
.activity-card p,
.analytics-details p,
.analytics-details li,
.settings-card label,
.contact-card label,
.privacy-section p {
  color: var(--muted);
  line-height: 1.8;
}

.pricing-card.featured {
  background: linear-gradient(180deg, rgba(143, 92, 255, 0.16), rgba(15, 18, 42, 0.72));
  border-color: rgba(143, 92, 255, 0.22);
}

.pricing-card .price {
  margin: 20px 0;
  font-size: 2.8rem;
  color: #fff;
}

.pricing-card ul {
  list-style: none;
  padding: 0;
  margin: 16px 0 24px;
}

.pricing-card li {
  margin-bottom: 12px;
}

.stats-section {
  display: grid;
  grid-template-columns: repeat(3, minmax(180px, 1fr));
  gap: 24px;
}

.stat-card {
  padding: 28px;
  text-align: center;
}

.stat-card span {
  display: block;
  font-size: 3rem;
  font-weight: 800;
}

.testimonial-slider {
  position: relative;
  padding: 32px;
}

.testimonial-slide {
  display: none;
}

.testimonial-slide.active {
  display: block;
}

.testimonial-slide p {
  font-size: 1.1rem;
  line-height: 1.9;
}

.testimonial-slide span {
  display: block;
  margin-top: 20px;
  color: var(--accent);
}

.testimonial-controls {
  display: flex;
  gap: 12px;
  justify-content: center;
  margin-top: 24px;
}

.testimonial-controls button {
  width: 46px;
  height: 46px;
}

.faq-accordion {
  padding: 28px;
}

.faq-item {
  margin-bottom: 16px;
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.faq-toggle {
  width: 100%;
  text-align: left;
  background: rgba(255, 255, 255, 0.04);
  border: none;
  color: var(--text);
  padding: 18px 22px;
  font-size: 1rem;
  cursor: pointer;
}

.faq-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 280ms ease;
  padding: 0 22px;
}

.faq-item.open .faq-content {
  max-height: 160px;
  padding-bottom: 18px;
}

.cta-panel {
  padding: 40px;
  text-align: center;
}

.cta-panel h2 {
  margin: 0 0 16px;
}

.dashboard-shell {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 24px;
  padding: 24px;
}

.dashboard-sidebar {
  padding: 28px;
}

.sidebar-brand {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 32px;
}

.sidebar-nav {
  display: grid;
  gap: 12px;
}

.sidebar-nav a {
  display: block;
  text-decoration: none;
  color: var(--text);
  padding: 14px 18px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.03);
}

.sidebar-nav a.active,
.sidebar-nav a:hover {
  background: rgba(143, 92, 255, 0.18);
  color: #fff;
}

.sidebar-footer {
  margin-top: 32px;
}

.dashboard-main {
  display: grid;
  gap: 24px;
}

.dashboard-header {
  align-items: center;
  justify-content: space-between;
}

.dashboard-header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.notification-pill {
  min-width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: rgba(79, 216, 255, 0.16);
  color: var(--accent);
}

.dashboard-grid {
  grid-template-columns: repeat(3, minmax(220px, 1fr));
}

.dashboard-card {
  padding: 28px;
}

.card-label {
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.75rem;
  margin-bottom: 12px;
  display: inline-block;
}

.dashboard-card h2 {
  margin: 0;
  font-size: 2.8rem;
}

.analytics-section .analytics-panels {
  display: grid;
  grid-template-columns: 2.2fr 1fr;
  gap: 24px;
}

.analytics-chart {
  min-height: 320px;
  padding: 28px;
}

.analytics-details {
  padding: 28px;
}

.analytics-details ul {
  list-style: none;
  padding: 0;
  margin: 18px 0 0;
}

.activity-cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(220px, 1fr));
  gap: 24px;
}

.activity-card span {
  display: block;
  margin-top: 20px;
  color: var(--accent);
}

.chat-shell {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 24px;
  padding: 24px;
}

.chat-sidebar {
  padding: 28px;
}

.chat-history-panel {
  margin-top: 28px;
}

.chat-history-panel h3 {
  margin-bottom: 16px;
}

.history-item {
  list-style: none;
  padding: 16px;
  border-radius: 18px;
  margin-bottom: 12px;
  background: rgba(255, 255, 255, 0.03);
  cursor: pointer;
}

.history-item.active,
.history-item:hover {
  background: rgba(143, 92, 255, 0.16);
}

.chat-main {
  padding: 28px;
  display: grid;
  gap: 22px;
}

.chat-header {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  align-items: flex-start;
}

.chat-header-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.message-thread {
  min-height: 520px;
  border-radius: var(--radius);
  background: rgba(8, 12, 24, 0.82);
  border: 1px solid rgba(255, 255, 255, 0.08);
  padding: 24px;
  overflow-y: auto;
  display: grid;
  gap: 20px;
}

.message {
  max-width: 90%;
  padding: 18px 22px;
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.04);
  position: relative;
}

.message-system {
  border-left: 4px solid var(--accent);
}

.message-user {
  background: rgba(143, 92, 255, 0.12);
  justify-self: end;
}

.message p {
  margin: 0;
  line-height: 1.8;
}

.message span {
  display: block;
  margin-top: 12px;
  font-size: 0.8rem;
  color: var(--muted);
}

.chat-form {
  display: grid;
  gap: 16px;
  padding: 20px;
}

.chat-form textarea {
  width: 100%;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.03);
  color: var(--text);
  border-radius: 20px;
  padding: 18px;
  resize: vertical;
  min-height: 100px;
}

.chat-actions {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.auth-shell {
  max-width: 520px;
  margin: 80px auto;
  padding: 40px;
  border-radius: 32px;
}

.auth-brand {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-bottom: 28px;
}

.auth-brand h1 {
  margin: 0;
  font-size: 2.4rem;
}

.auth-form {
  display: grid;
  gap: 18px;
}

.auth-form label {
  font-size: 0.95rem;
  color: var(--muted);
}

.auth-form input,
.auth-form textarea {
  width: 100%;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 18px;
  color: var(--text);
  padding: 16px 18px;
}

.auth-actions {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.status-message {
  margin-top: 6px;
  min-height: 24px;
  font-size: 0.95rem;
}

.password-strength {
  color: var(--accent);
  font-size: 0.95rem;
}

.contact-grid {
  grid-template-columns: 1fr 1.1fr;
}

.contact-card {
  display: grid;
  gap: 16px;
}

.privacy-section {
  max-width: 900px;
  margin: 40px auto;
  padding: 36px;
}

.contact-card input,
.contact-card textarea {
  width: 100%;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 18px;
  padding: 16px;
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
}

footer.site-footer,
footer.site-footer p {
  margin: 0;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px 28px;
}

.footer-links {
  display: flex;
  gap: 16px;
}

.footer-links a {
  color: var(--text);
  text-decoration: none;
}

footer.site-footer a:hover {
  color: var(--accent);
}

input:focus,
textarea:focus,
button:focus,
.faq-toggle:focus {
  outline: 1px solid rgba(79, 216, 255, 0.4);
  outline-offset: 2px;
}

@media (max-width: 1100px) {
  .hero-section,
  .dashboard-shell,
  .chat-shell,
  .contact-grid {
    grid-template-columns: 1fr;
  }
  .pricing-grid,
  .feature-grid,
  .analytics-panels,
  .activity-cards {
    grid-template-columns: 1fr;
  }
  .site-header,
  .site-footer {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 760px) {
  .page-shell,
  .dashboard-shell,
  .auth-shell,
  .chat-shell {
    padding: 18px;
  }
  .site-nav {
    display: none;
  }
  .nav-toggle {
    display: inline-flex;
  }
  .hero-title {
    font-size: 3rem;
  }
  .site-header {
    top: 0;
    margin: 0 -18px 24px;
    border-radius: 0 0 24px 24px;
  }
  .auth-shell {
    margin: 40px 16px;
  }
}