:root {
  --a-blue-50: #eff6ff;
  --a-blue-100: #dbeafe;
  --a-blue-200: #bfdbfe;
  --a-blue-500: #3b82f6;
  --a-blue-600: #2563eb;
  --a-blue-700: #1d4ed8;
  --a-blue-800: #135bd6;
  --a-cyan-400: #36d3ee;
  --a-slate-50: #f8fafc;
  --a-slate-100: #f1f5f9;
  --a-slate-200: #e2e8f0;
  --a-slate-400: #94a3b8;
  --a-slate-500: #64748b;
  --a-slate-700: #334155;
  --a-slate-900: #0f172a;
  --a-white: #ffffff;
  --a-radius: 16px;
  --a-radius-sm: 10px;
  --a-shadow: 0 10px 40px rgba(37, 99, 235, 0.08);
  --a-shadow-lg: 0 24px 60px rgba(15, 23, 42, 0.12);
  --a-font: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --a-container: 1180px;
}

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

html {
  scroll-behavior: smooth;
}

body.aidenta-landing-page {
  margin: 0;
  font-family: var(--a-font);
  color: var(--a-slate-900);
  background: var(--a-slate-50);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

body.aidenta-landing-page a {
  color: inherit;
  text-decoration: none;
}

.aidenta-landing {
  position: relative;
  overflow: hidden;
  min-height: 100vh;
}

.aidenta-bg {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}

.aidenta-bg__orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.45;
}

.aidenta-bg__orb--1 {
  width: 520px;
  height: 520px;
  top: -120px;
  right: -80px;
  background: radial-gradient(circle, var(--a-cyan-400), transparent 70%);
}

.aidenta-bg__orb--2 {
  width: 480px;
  height: 480px;
  bottom: 10%;
  left: -120px;
  background: radial-gradient(circle, var(--a-blue-500), transparent 70%);
}

.aidenta-bg__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(37, 99, 235, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(37, 99, 235, 0.04) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(to bottom, black 20%, transparent 95%);
}

.aidenta-container {
  width: min(100% - 32px, var(--a-container));
  margin-inline: auto;
}

.aidenta-header,
.aidenta-hero,
.aidenta-trust,
.aidenta-section,
.aidenta-cta,
.aidenta-footer {
  position: relative;
  z-index: 1;
}

/* Header */
.aidenta-header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(14px);
  background: rgba(248, 250, 252, 0.82);
  border-bottom: 1px solid rgba(226, 232, 240, 0.9);
}

.aidenta-header__inner {
  display: flex;
  align-items: center;
  gap: 24px;
  min-height: 72px;
}

.aidenta-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.05rem;
  letter-spacing: -0.02em;
}

.aidenta-brand img {
  border-radius: 8px;
  box-shadow: 0 8px 20px rgba(37, 99, 235, 0.25);
}

.aidenta-nav {
  display: flex;
  align-items: center;
  gap: 22px;
  margin-left: auto;
}

.aidenta-nav a {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--a-slate-700);
  transition: color 0.2s;
}

.aidenta-nav a:hover {
  color: var(--a-blue-600);
}

.aidenta-nav-toggle {
  display: none;
  margin-left: auto;
  width: 42px;
  height: 42px;
  border: 1px solid var(--a-slate-200);
  border-radius: 10px;
  background: var(--a-white);
  padding: 0;
  cursor: pointer;
}

.aidenta-nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 4px auto;
  background: var(--a-slate-700);
  border-radius: 2px;
}

.aidenta-header__cta {
  flex-shrink: 0;
}

/* Buttons */
.aidenta-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: 12px;
  font-weight: 700;
  font-size: 0.92rem;
  border: 1px solid transparent;
  transition: transform 0.15s, box-shadow 0.15s, background 0.15s;
}

.aidenta-btn:hover {
  transform: translateY(-1px);
}

.aidenta-btn--primary {
  background: linear-gradient(135deg, var(--a-blue-600), var(--a-blue-700));
  color: var(--a-white);
  box-shadow: 0 10px 24px rgba(37, 99, 235, 0.28);
}

.aidenta-btn--primary:hover {
  box-shadow: 0 14px 30px rgba(37, 99, 235, 0.35);
}

.aidenta-btn--ghost {
  background: var(--a-white);
  border-color: var(--a-slate-200);
  color: var(--a-slate-700);
}

.aidenta-btn--ghost:hover {
  border-color: var(--a-blue-200);
  color: var(--a-blue-700);
}

.aidenta-btn--white {
  background: var(--a-white);
  color: var(--a-blue-700);
}

.aidenta-btn--ghost-white {
  background: transparent;
  border-color: rgba(255, 255, 255, 0.35);
  color: var(--a-white);
}

.aidenta-btn--lg {
  padding: 14px 22px;
  font-size: 0.98rem;
  border-radius: 14px;
}

/* Hero */
.aidenta-hero {
  padding: 56px 0 32px;
}

.aidenta-hero__grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 48px;
  align-items: center;
}

.aidenta-badge {
  display: inline-flex;
  align-items: center;
  padding: 6px 12px;
  border-radius: 999px;
  background: var(--a-blue-600);
  color: var(--a-white);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.aidenta-badge--soft {
  background: var(--a-blue-50);
  color: var(--a-blue-700);
  border: 1px solid var(--a-blue-100);
}

.aidenta-hero h1 {
  margin: 18px 0 16px;
  font-size: clamp(2rem, 4vw, 3.2rem);
  line-height: 1.08;
  letter-spacing: -0.03em;
  font-weight: 900;
}

.aidenta-lead {
  margin: 0 0 28px;
  font-size: 1.12rem;
  color: var(--a-slate-500);
  max-width: 54ch;
}

.aidenta-lead strong {
  color: var(--a-slate-900);
}

.aidenta-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 28px;
}

.aidenta-hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.aidenta-hero__stats li {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.aidenta-hero__stats strong {
  font-size: 1.35rem;
  font-weight: 900;
  color: var(--a-blue-700);
}

.aidenta-hero__stats span {
  font-size: 0.82rem;
  color: var(--a-slate-500);
  font-weight: 600;
}

/* Mockup */
.aidenta-mockup {
  background: var(--a-white);
  border: 1px solid var(--a-slate-200);
  border-radius: 20px;
  box-shadow: var(--a-shadow-lg);
  overflow: hidden;
}

.aidenta-mockup__bar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 12px 16px;
  background: linear-gradient(180deg, var(--a-slate-50), var(--a-white));
  border-bottom: 1px solid var(--a-slate-200);
}

.aidenta-mockup__bar span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--a-slate-200);
}

.aidenta-mockup__bar span:first-child { background: #fca5a5; }
.aidenta-mockup__bar span:nth-child(2) { background: #fde047; }
.aidenta-mockup__bar span:nth-child(3) { background: #86efac; }

.aidenta-mockup__title {
  margin-left: auto;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--a-slate-500);
}

.aidenta-mockup__body {
  padding: 18px;
  display: grid;
  gap: 14px;
}

.aidenta-mockup__wave {
  display: flex;
  align-items: flex-end;
  gap: 4px;
  height: 42px;
  padding: 8px 10px;
  border-radius: 12px;
  background: var(--a-blue-50);
  border: 1px solid var(--a-blue-100);
}

.aidenta-mockup__wave span {
  flex: 1;
  border-radius: 999px;
  background: linear-gradient(180deg, var(--a-blue-500), var(--a-blue-700));
  animation: aidenta-wave 1.4s ease-in-out infinite;
}

.aidenta-mockup__wave span:nth-child(odd) { animation-delay: 0.1s; }
.aidenta-mockup__wave span:nth-child(3n) { animation-delay: 0.25s; }

@keyframes aidenta-wave {
  0%, 100% { height: 18%; opacity: 0.55; }
  50% { height: 92%; opacity: 1; }
}

.aidenta-mockup__chat {
  display: grid;
  gap: 10px;
}

.aidenta-msg {
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid var(--a-slate-200);
  background: var(--a-white);
}

.aidenta-msg--doctor {
  border-color: var(--a-blue-200);
  background: var(--a-blue-50);
}

.aidenta-msg--patient {
  margin-left: 18px;
}

.aidenta-msg__label {
  display: block;
  font-size: 0.68rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--a-blue-700);
  margin-bottom: 4px;
}

.aidenta-msg p {
  margin: 0;
  font-size: 0.86rem;
  color: var(--a-slate-700);
}

.aidenta-mockup__summary {
  padding: 12px;
  border-radius: 12px;
  background: var(--a-slate-50);
  border: 1px dashed var(--a-slate-200);
}

.aidenta-mockup__summary-head {
  font-size: 0.72rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--a-slate-500);
  margin-bottom: 8px;
}

.aidenta-mockup__summary ul {
  margin: 0;
  padding-left: 18px;
  color: var(--a-slate-700);
  font-size: 0.84rem;
}

/* Trust strip */
.aidenta-trust {
  padding: 0 0 24px;
}

.aidenta-trust p {
  margin: 0;
  padding: 16px 20px;
  border-radius: var(--a-radius);
  background: linear-gradient(90deg, var(--a-blue-50), var(--a-white));
  border: 1px solid var(--a-blue-100);
  color: var(--a-slate-700);
  font-weight: 500;
  text-align: center;
}

/* Sections */
.aidenta-section {
  padding: 72px 0;
}

.aidenta-section--alt {
  background: rgba(255, 255, 255, 0.65);
  border-block: 1px solid var(--a-slate-200);
}

.aidenta-section__head {
  max-width: 680px;
  margin-bottom: 40px;
}

.aidenta-section__head h2 {
  margin: 14px 0 10px;
  font-size: clamp(1.7rem, 3vw, 2.35rem);
  letter-spacing: -0.03em;
  font-weight: 900;
}

.aidenta-section__head p {
  margin: 0;
  color: var(--a-slate-500);
  font-size: 1.05rem;
}

/* Cards */
.aidenta-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.aidenta-card {
  background: var(--a-white);
  border: 1px solid var(--a-slate-200);
  border-radius: var(--a-radius);
  padding: 24px;
  box-shadow: var(--a-shadow);
  transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s;
}

.aidenta-card:hover {
  transform: translateY(-3px);
  border-color: var(--a-blue-200);
  box-shadow: 0 16px 40px rgba(37, 99, 235, 0.12);
}

.aidenta-card__icon {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  background: var(--a-blue-50);
  color: var(--a-blue-700);
  margin-bottom: 16px;
}

.aidenta-card__icon svg {
  width: 22px;
  height: 22px;
}

.aidenta-card h3 {
  margin: 0 0 10px;
  font-size: 1.05rem;
  font-weight: 800;
}

.aidenta-card p {
  margin: 0;
  color: var(--a-slate-500);
  font-size: 0.94rem;
}

/* Steps */
.aidenta-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.aidenta-step {
  background: var(--a-white);
  border: 1px solid var(--a-slate-200);
  border-radius: var(--a-radius);
  padding: 22px;
  box-shadow: var(--a-shadow);
}

.aidenta-step__num {
  display: inline-flex;
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  color: var(--a-blue-600);
  margin-bottom: 12px;
}

.aidenta-step h3 {
  margin: 0 0 8px;
  font-size: 1rem;
  font-weight: 800;
}

.aidenta-step p {
  margin: 0;
  color: var(--a-slate-500);
  font-size: 0.9rem;
}

/* Protocol */
.aidenta-protocol {
  display: grid;
  grid-template-columns: 1fr 1.05fr;
  gap: 32px;
  align-items: start;
}

.aidenta-protocol h2 {
  margin: 14px 0 12px;
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  letter-spacing: -0.03em;
  font-weight: 900;
}

.aidenta-protocol__text p {
  color: var(--a-slate-500);
}

.aidenta-checklist {
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.aidenta-checklist li {
  position: relative;
  padding-left: 28px;
  color: var(--a-slate-700);
  font-weight: 600;
}

.aidenta-checklist li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 7px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--a-blue-600);
  box-shadow: inset 0 0 0 3px var(--a-blue-100);
}

.aidenta-protocol__panel {
  background: var(--a-white);
  border: 1px solid var(--a-slate-200);
  border-radius: 18px;
  overflow: hidden;
  box-shadow: var(--a-shadow-lg);
}

.aidenta-protocol__panel-head {
  padding: 14px 18px;
  background: linear-gradient(135deg, var(--a-blue-600), var(--a-blue-800));
  color: var(--a-white);
  font-weight: 800;
  font-size: 0.88rem;
}

.aidenta-fields {
  margin: 0;
  padding: 0;
}

.aidenta-fields > div {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 12px;
  padding: 12px 18px;
  border-bottom: 1px solid var(--a-slate-100);
}

.aidenta-fields > div:last-child {
  border-bottom: 0;
}

.aidenta-fields dt {
  margin: 0;
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--a-blue-700);
}

.aidenta-fields dd {
  margin: 0;
  color: var(--a-slate-700);
  font-size: 0.92rem;
}

/* Security */
.aidenta-security {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 20px;
}

.aidenta-security__card,
.aidenta-requirements {
  background: var(--a-white);
  border: 1px solid var(--a-slate-200);
  border-radius: var(--a-radius);
  padding: 28px;
  box-shadow: var(--a-shadow);
}

.aidenta-security__card h2 {
  margin: 14px 0 12px;
  font-size: 1.65rem;
  letter-spacing: -0.02em;
  font-weight: 900;
}

.aidenta-security__card p {
  color: var(--a-slate-500);
  margin: 0 0 18px;
}

.aidenta-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.aidenta-pills li {
  padding: 8px 12px;
  border-radius: 999px;
  background: var(--a-blue-50);
  border: 1px solid var(--a-blue-100);
  color: var(--a-blue-800);
  font-size: 0.82rem;
  font-weight: 700;
}

.aidenta-requirements h3 {
  margin: 0 0 14px;
  font-size: 1.05rem;
}

.aidenta-requirements ul {
  margin: 0;
  padding-left: 18px;
  color: var(--a-slate-600);
}

.aidenta-requirements li {
  margin-bottom: 8px;
}

/* CTA */
.aidenta-cta {
  padding: 0 0 72px;
}

.aidenta-cta__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 36px;
  border-radius: 22px;
  background: linear-gradient(135deg, var(--a-blue-700), var(--a-blue-800) 55%, #0ea5e9);
  color: var(--a-white);
  box-shadow: 0 24px 60px rgba(29, 78, 216, 0.35);
}

.aidenta-cta h2 {
  margin: 0 0 8px;
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 900;
  letter-spacing: -0.02em;
}

.aidenta-cta p {
  margin: 0;
  max-width: 52ch;
  color: rgba(255, 255, 255, 0.88);
}

.aidenta-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  flex-shrink: 0;
}

/* Footer */
.aidenta-footer {
  padding: 28px 0 40px;
  border-top: 1px solid var(--a-slate-200);
  background: rgba(255, 255, 255, 0.7);
}

.aidenta-footer__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 20px;
}

.aidenta-brand--footer img {
  box-shadow: none;
}

.aidenta-footer p {
  margin: 0;
  color: var(--a-slate-500);
  font-size: 0.88rem;
}

.aidenta-footer__nav {
  display: flex;
  gap: 16px;
}

.aidenta-footer__nav a {
  font-size: 0.84rem;
  color: var(--a-slate-500);
  font-weight: 600;
  transition: color 0.2s;
}

.aidenta-footer__nav a:hover {
  color: var(--a-blue-700);
}

.aidenta-footer__top {
  margin-left: auto;
  font-size: 0.86rem;
  font-weight: 700;
  color: var(--a-blue-700);
}

/* Responsive */
@media (max-width: 1024px) {
  .aidenta-hero__grid,
  .aidenta-protocol,
  .aidenta-security {
    grid-template-columns: 1fr;
  }

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

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

@media (max-width: 768px) {
  .aidenta-nav-toggle {
    display: block;
  }

  .aidenta-nav {
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    padding: 16px;
    background: var(--a-white);
    border-bottom: 1px solid var(--a-slate-200);
    display: none;
  }

  .aidenta-nav.is-open {
    display: flex;
  }

  .aidenta-nav a {
    padding: 10px 0;
  }

  .aidenta-header__cta {
    display: none;
  }

  .aidenta-cards,
  .aidenta-steps {
    grid-template-columns: 1fr;
  }

  .aidenta-fields > div {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .aidenta-cta__inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .aidenta-footer__top {
    margin-left: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .aidenta-mockup__wave span { animation: none; height: 55%; }
  .aidenta-btn:hover,
  .aidenta-card:hover { transform: none; }
}