/* ═══════════════════════════════════════════════════
   CARE — Design System & Styles
   Contained Adversarial Research Environment
   ═══════════════════════════════════════════════════ */

/* ── Tokens ───────────────────────────────────────── */
:root {
  --bg-primary:    #08080d;
  --bg-elevated:   #0e0e15;
  --bg-surface:    #13131c;
  --bg-hover:      #1a1a26;

  --border-subtle: #1e1e2e;
  --border-accent: #00e5ff22;

  --text-primary:  #e8e8ed;
  --text-secondary:#8888a0;
  --text-tertiary: #55556a;

  --accent:        #00e5ff;
  --accent-dim:    #00b8cc;
  --accent-glow:   #00e5ff18;
  --accent-strong: #00e5ff33;

  --danger:        #ff3d5a;

  --font-display:  'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono:     'JetBrains Mono', 'Fira Code', monospace;

  --radius-sm:     6px;
  --radius-md:     10px;
  --radius-lg:     16px;

  --transition:    180ms cubic-bezier(.4,0,.2,1);
  --transition-slow: 400ms cubic-bezier(.4,0,.2,1);
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
img { display: block; max-width: 100%; }

/* ── Utility ──────────────────────────────────────── */
.container {
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 120px 0;
}

.section--tight {
  padding: 80px 0;
}

.label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 16px;
}

.label::before {
  content: '';
  width: 8px;
  height: 1px;
  background: var(--accent);
}

.headline {
  font-size: clamp(32px, 4.5vw, 56px);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.03em;
  color: var(--text-primary);
}

.subheadline {
  font-size: clamp(24px, 3vw, 36px);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.025em;
}

.body-lg {
  font-size: 17px;
  line-height: 1.65;
  color: var(--text-secondary);
  max-width: 560px;
}

.mono {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.02em;
}

/* ── Nav ──────────────────────────────────────────── */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 0 24px;
  background: #08080dee;
  backdrop-filter: blur(20px) saturate(1.2);
  -webkit-backdrop-filter: blur(20px) saturate(1.2);
  border-bottom: 1px solid var(--border-subtle);
  transition: background var(--transition);
}

.nav__inner {
  max-width: 1120px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 18px;
  letter-spacing: 0.08em;
  color: var(--text-primary);
}

.nav__logo-mark {
  width: 28px;
  height: 28px;
  border: 2px solid var(--accent);
  border-radius: 6px;
  display: grid;
  place-items: center;
  position: relative;
}

.nav__logo-mark::after {
  content: '';
  width: 8px;
  height: 8px;
  background: var(--accent);
  border-radius: 2px;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav__link {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--transition);
  letter-spacing: 0.01em;
}

.nav__link:hover {
  color: var(--text-primary);
}

.nav__cta {
  font-size: 13px;
  font-weight: 600;
  color: var(--bg-primary);
  background: var(--accent);
  padding: 8px 20px;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
  letter-spacing: 0.01em;
}

.nav__cta:hover {
  background: var(--accent-dim);
  box-shadow: 0 0 20px var(--accent-strong);
}

/* Mobile nav toggle */
.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav__toggle span {
  width: 20px;
  height: 1.5px;
  background: var(--text-secondary);
  border-radius: 2px;
  transition: all var(--transition);
}

/* ── Hero ─────────────────────────────────────────── */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  padding-top: 64px;
  overflow: hidden;
}

.hero__grid-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--border-subtle) 1px, transparent 1px),
    linear-gradient(90deg, var(--border-subtle) 1px, transparent 1px);
  background-size: 60px 60px;
  opacity: 0.35;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, black 20%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, black 20%, transparent 70%);
}

.hero__glow {
  position: absolute;
  top: -120px;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 500px;
  background: radial-gradient(ellipse, var(--accent-glow) 0%, transparent 70%);
  pointer-events: none;
}

.hero__content {
  position: relative;
  z-index: 2;
  max-width: 680px;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 100px;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 32px;
}

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

@keyframes pulse-dot {
  0%, 100% { opacity: 1; box-shadow: 0 0 0 0 var(--accent-strong); }
  50% { opacity: 0.7; box-shadow: 0 0 0 6px transparent; }
}

.hero__title {
  margin-bottom: 24px;
}

.hero__title .accent {
  color: var(--accent);
}

.hero__desc {
  margin-bottom: 40px;
}

.hero__actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* ── Buttons ──────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 600;
  padding: 14px 28px;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  letter-spacing: 0.01em;
}

.btn--primary {
  background: var(--accent);
  color: var(--bg-primary);
}

.btn--primary:hover {
  background: var(--accent-dim);
  box-shadow: 0 0 30px var(--accent-strong), 0 4px 12px #00000040;
  transform: translateY(-1px);
}

.btn--ghost {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border-subtle);
}

.btn--ghost:hover {
  color: var(--text-primary);
  border-color: var(--text-tertiary);
  background: var(--bg-hover);
}

.btn__arrow {
  transition: transform var(--transition);
  font-size: 16px;
}

.btn:hover .btn__arrow {
  transform: translateX(3px);
}

/* ── Trusted ──────────────────────────────────────── */
.trusted {
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
  background: var(--bg-elevated);
}

.trusted__inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 56px;
  flex-wrap: wrap;
  padding: 48px 0;
}

.trusted__label {
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-tertiary);
  white-space: nowrap;
}

.trusted__logos {
  display: flex;
  align-items: center;
  gap: 48px;
  flex-wrap: wrap;
}

.trusted__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-tertiary);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.04em;
  opacity: 0.55;
  transition: opacity var(--transition);
}

.trusted__logo:hover {
  opacity: 0.85;
}

.trusted__logo-icon {
  width: 26px;
  height: 26px;
  border-radius: 4px;
  border: 1.5px solid currentColor;
  display: grid;
  place-items: center;
  font-size: 12px;
  font-weight: 700;
}

/* ── About ────────────────────────────────────────── */
.about__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.about__visual {
  aspect-ratio: 1;
  max-width: 480px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.about__hex {
  width: 220px;
  height: 220px;
  border: 1.5px solid var(--accent);
  border-radius: 24px;
  transform: rotate(45deg);
  position: relative;
  opacity: 0.25;
  transition: opacity var(--transition-slow);
}

.about__hex:hover {
  opacity: 0.5;
}

.about__hex::before {
  content: '';
  position: absolute;
  inset: 24px;
  border: 1px solid var(--accent);
  border-radius: 16px;
  opacity: 0.5;
}

.about__hex::after {
  content: '';
  position: absolute;
  inset: 52px;
  border: 1px solid var(--accent);
  border-radius: 10px;
  background: var(--accent-glow);
}

.about__orbit {
  position: absolute;
  width: 360px;
  height: 360px;
  border: 1px dashed var(--border-subtle);
  border-radius: 50%;
  animation: slow-spin 60s linear infinite;
}

.about__orbit::before {
  content: '';
  position: absolute;
  top: -4px;
  left: 50%;
  width: 8px;
  height: 8px;
  background: var(--accent);
  border-radius: 50%;
  box-shadow: 0 0 12px var(--accent-strong);
}

@keyframes slow-spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.about__text .headline {
  font-size: clamp(26px, 3.5vw, 40px);
  margin-bottom: 20px;
}

.about__text .body-lg {
  margin-bottom: 24px;
}

.about__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.about__tag {
  padding: 6px 14px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 100px;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-secondary);
}

/* ── Capabilities ─────────────────────────────────── */
.capabilities {
  background: var(--bg-elevated);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}

.capabilities__header {
  text-align: center;
  max-width: 560px;
  margin: 0 auto 64px;
}

.capabilities__header .headline {
  font-size: clamp(26px, 3.5vw, 40px);
  margin-bottom: 16px;
}

.capabilities__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.cap-card {
  background: var(--bg-primary);
  padding: 48px 40px;
  position: relative;
  transition: background var(--transition);
}

.cap-card:hover {
  background: var(--bg-surface);
}

.cap-card__icon {
  width: 44px;
  height: 44px;
  border: 1.5px solid var(--accent);
  border-radius: var(--radius-sm);
  display: grid;
  place-items: center;
  margin-bottom: 24px;
  color: var(--accent);
  font-size: 18px;
  position: relative;
}

.cap-card__icon::after {
  content: '';
  position: absolute;
  inset: -6px;
  border-radius: 10px;
  background: var(--accent-glow);
  z-index: -1;
}

.cap-card__title {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}

.cap-card__desc {
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-secondary);
}

.cap-card__number {
  position: absolute;
  top: 20px;
  right: 24px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-tertiary);
  opacity: 0.4;
}

/* ── How It Works ─────────────────────────────────── */
.how__header {
  text-align: center;
  max-width: 520px;
  margin: 0 auto 72px;
}

.how__header .headline {
  font-size: clamp(26px, 3.5vw, 40px);
  margin-bottom: 16px;
}

.how__steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  position: relative;
}

/* Connector line */
.how__steps::before {
  content: '';
  position: absolute;
  top: 32px;
  left: calc(16.66% + 24px);
  right: calc(16.66% + 24px);
  height: 1px;
  background: linear-gradient(90deg, var(--border-subtle), var(--accent), var(--border-subtle));
  z-index: 0;
}

.step {
  text-align: center;
  position: relative;
  z-index: 1;
}

.step__number {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  border: 1.5px solid var(--border-subtle);
  background: var(--bg-primary);
  display: grid;
  place-items: center;
  margin: 0 auto 24px;
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 700;
  color: var(--accent);
  transition: all var(--transition);
}

.step:hover .step__number {
  border-color: var(--accent);
  box-shadow: 0 0 20px var(--accent-glow);
}

.step__title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 10px;
}

.step__desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.55;
  max-width: 280px;
  margin: 0 auto;
}

/* ── Use Cases ────────────────────────────────────── */
.usecases {
  background: var(--bg-elevated);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}

.usecases__header {
  text-align: center;
  max-width: 520px;
  margin: 0 auto 64px;
}

.usecases__header .headline {
  font-size: clamp(26px, 3.5vw, 40px);
  margin-bottom: 16px;
}

.usecases__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.usecase {
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 48px 40px;
  background: var(--bg-primary);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.usecase:hover {
  border-color: var(--accent-strong);
  box-shadow: 0 0 40px var(--accent-glow);
}

.usecase::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0;
  transition: opacity var(--transition);
}

.usecase:hover::before {
  opacity: 1;
}

.usecase__role {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 16px;
}

.usecase__title {
  font-size: 22px;
  font-weight: 600;
  margin-bottom: 16px;
  letter-spacing: -0.01em;
}

.usecase__desc {
  font-size: 14px;
  line-height: 1.65;
  color: var(--text-secondary);
  margin-bottom: 28px;
}

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

.usecase__feature {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  color: var(--text-secondary);
}

.usecase__check {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  border: 1.5px solid var(--accent);
  display: grid;
  place-items: center;
  flex-shrink: 0;
}

.usecase__check::after {
  content: '';
  width: 5px;
  height: 5px;
  background: var(--accent);
  border-radius: 50%;
}

/* ── Stats ────────────────────────────────────────── */
.stats__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border-subtle);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.stat {
  background: var(--bg-primary);
  padding: 56px 40px;
  text-align: center;
}

.stat__value {
  font-size: clamp(36px, 5vw, 56px);
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 12px;
}

.stat__label {
  font-size: 14px;
  color: var(--text-secondary);
}

/* ── CTA ──────────────────────────────────────────── */
.cta {
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta__glow {
  position: absolute;
  bottom: -100px;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 300px;
  background: radial-gradient(ellipse, var(--accent-glow) 0%, transparent 70%);
  pointer-events: none;
}

.cta__content {
  position: relative;
  z-index: 2;
}

.cta .headline {
  font-size: clamp(26px, 3.5vw, 40px);
  margin-bottom: 16px;
}

.cta .body-lg {
  margin: 0 auto 40px;
  text-align: center;
}

.cta__actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* ── Footer ───────────────────────────────────────── */
.footer {
  padding: 40px 0;
  border-top: 1px solid var(--border-subtle);
}

.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.footer__left {
  display: flex;
  align-items: center;
  gap: 24px;
}

.footer__brand {
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.06em;
  color: var(--text-tertiary);
}

.footer__copy {
  font-size: 12px;
  color: var(--text-tertiary);
}

.footer__links {
  display: flex;
  gap: 24px;
}

.footer__link {
  font-size: 12px;
  color: var(--text-tertiary);
  transition: color var(--transition);
}

.footer__link:hover {
  color: var(--text-secondary);
}

/* ── Responsive ───────────────────────────────────── */
@media (max-width: 900px) {
  .section { padding: 80px 0; }

  .about__grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .about__visual { display: none; }

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

  .how__steps {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .how__steps::before { display: none; }

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

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

@media (max-width: 640px) {
  .section { padding: 64px 0; }
  .container { padding: 0 16px; }

  .nav__links { display: none; }
  .nav__toggle { display: flex; }

  .hero { min-height: auto; padding: 120px 0 80px; }

  .cap-card { padding: 32px 24px; }

  .usecase { padding: 32px 24px; }

  .stat { padding: 40px 24px; }

  .trusted__inner {
    flex-direction: column;
    gap: 24px;
  }

  .trusted__logos {
    gap: 24px;
    justify-content: center;
  }

  .footer__inner {
    flex-direction: column;
    text-align: center;
  }
}