:root {
  --bg: #0b0e11;
  --bg-alt: #10141a;
  --bg-card: #151a20;
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.14);
  --text: #f2f5f7;
  --text-muted: #9aa5b1;
  --accent: #3ddac0;
  --accent-soft: rgba(61, 218, 192, 0.12);
  --font-sans: "Inter", -apple-system, "Segoe UI", Helvetica, Arial, sans-serif;
  --font-mono: "JetBrains Mono", "SF Mono", Menlo, monospace;
  --container: 1100px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 84px;
}

body {
  margin: 0;
  background: var(--bg);
  background-image:
    radial-gradient(ellipse 900px 500px at 50% -10%, rgba(61, 218, 192, 0.10), transparent 60%),
    linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
  background-size: auto, 64px 64px, 64px 64px;
  color: var(--text);
  font-family: var(--font-sans);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

img {
  display: block;
  max-width: 100%;
}

a {
  color: var(--accent);
  text-decoration: none;
}

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Header */

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(11, 14, 17, 0.72);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.brand__name {
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: 0.02em;
  color: var(--text);
}

/* Buttons */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: 8px;
  font-family: inherit;
  font-weight: 600;
  font-size: 0.95rem;
  padding: 12px 22px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background-color 0.15s ease, border-color 0.15s ease, color 0.15s ease, transform 0.1s ease;
  white-space: nowrap;
}

.btn:active {
  transform: translateY(1px);
}

.btn--primary {
  background: var(--accent);
  color: #06201b;
}

.btn--primary:hover {
  background: #5be4cf;
}

.btn--ghost {
  background: transparent;
  border-color: var(--border-strong);
  color: var(--text);
}

.btn--ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.btn--small {
  padding: 8px 16px;
  font-size: 0.875rem;
}

.btn[disabled] {
  opacity: 0.6;
  cursor: default;
  transform: none;
}

/* Hero */

.hero {
  padding: 96px 0 72px;
  text-align: center;
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 20px;
}

.hero__title {
  font-size: clamp(2.4rem, 6vw, 4rem);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.02em;
  margin: 0 0 24px;
}

.hero__subtitle {
  font-size: 1.125rem;
  color: var(--text-muted);
  max-width: 640px;
  margin: 0 auto 40px;
}

/* Signup form */

.signup-form {
  max-width: 520px;
  margin: 0 auto;
}

.signup-form__row {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.signup-form__input {
  flex: 1;
  background: var(--bg-card);
  border: 1px solid var(--border-strong);
  border-radius: 8px;
  padding: 13px 16px;
  font-size: 1rem;
  font-family: inherit;
  color: var(--text);
}

.signup-form__input::placeholder {
  color: var(--text-muted);
}

.signup-form__input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.signup-form__note {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin: 12px 0 0;
}

.signup-form__status {
  font-size: 0.9rem;
  font-weight: 600;
  margin: 12px 0 0;
  min-height: 1.2em;
}

.signup-form__status[data-state="success"] {
  color: var(--accent);
}

.signup-form__status[data-state="error"] {
  color: #ff8a8a;
}

.hp-field {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

@media (min-width: 560px) {
  .signup-form__row {
    flex-direction: row;
  }
}

/* Sections */

.section {
  padding: 80px 0;
  border-top: 1px solid var(--border);
}

.section--alt {
  background: var(--bg-alt);
}

.section--band {
  background: var(--accent-soft);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.section--cta {
  text-align: center;
}

.section__title {
  font-size: clamp(1.6rem, 4vw, 2.25rem);
  font-weight: 800;
  letter-spacing: -0.01em;
  margin: 0 0 12px;
  text-align: center;
}

.section__intro {
  color: var(--text-muted);
  font-size: 1.05rem;
  max-width: 620px;
  margin: 0 auto 48px;
  text-align: center;
}

/* Differentiator cards */

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

.card-grid--3 {
  grid-template-columns: 1fr;
}

@media (min-width: 760px) {
  .card-grid--3 {
    grid-template-columns: repeat(3, 1fr);
  }
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 28px;
}

.card__icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  background: var(--accent-soft);
  color: var(--accent);
  margin-bottom: 20px;
}

.card__icon svg {
  width: 24px;
  height: 24px;
}

.card__title {
  font-size: 1.15rem;
  font-weight: 700;
  margin: 0 0 10px;
}

.card__body {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin: 0;
}

/* Feature & roadmap lists */

.feature-list,
.roadmap-list {
  list-style: none;
  display: grid;
  gap: 16px;
  padding: 0;
  margin: 0;
  max-width: 880px;
  margin-inline: auto;
}

@media (min-width: 700px) {
  .feature-list,
  .roadmap-list {
    grid-template-columns: repeat(2, 1fr);
  }
}

.feature-list__item,
.roadmap-list__item {
  position: relative;
  padding-left: 30px;
  font-size: 0.98rem;
  color: var(--text-muted);
}

.feature-list__item strong,
.roadmap-list__item strong {
  color: var(--text);
}

.feature-list__item::before,
.roadmap-list__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.25em;
  width: 18px;
  height: 18px;
  background-repeat: no-repeat;
  background-position: center;
}

.feature-list__item::before {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='none'%3E%3Cpath d='M3 8.5 L6.5 12 L13 4' stroke='%233ddac0' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
}

.roadmap-list__item::before {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='none'%3E%3Ccircle cx='8' cy='8' r='5.5' stroke='%233ddac0' stroke-width='2'/%3E%3C/svg%3E");
}

.roadmap-note {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
  margin: 40px 0 0;
}

/* Ownership / pricing band */

.ownership {
  text-align: center;
  max-width: 680px;
}

.ownership__body {
  font-size: 1.05rem;
  color: var(--text-muted);
  margin: 0 0 12px;
}

.ownership__note {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  opacity: 0.8;
  margin: 0;
}

/* Footer */

.site-footer {
  border-top: 1px solid var(--border);
  padding: 48px 0;
}

.site-footer__inner {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.brand--footer .brand__name {
  font-size: 1rem;
}

.site-footer__tagline {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin: 0;
}

.site-footer__meta {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin: 0;
}

.site-footer__meta a {
  color: var(--text-muted);
  text-decoration: underline;
}

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