/* Embiral — design tokens */
:root {
  --bg: #fafaf9;
  --bg-elevated: #ffffff;
  --bg-inverse: #0a0a0a;
  --fg: #0a0a0a;
  --fg-muted: #525252;
  --fg-subtle: #737373;
  --fg-inverse: #fafaf9;
  --border: #e7e5e4;
  --border-strong: #d6d3d1;
  --accent: #0a0a0a;
  --radius-sm: 6px;
  --radius: 10px;
  --radius-lg: 16px;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow: 0 8px 24px -8px rgba(0, 0, 0, 0.08);
  --max-w: 1200px;
  --gutter: clamp(1rem, 4vw, 2rem);
  --font-sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Inter",
    "Helvetica Neue", Arial, sans-serif;
}

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

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--fg);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img, svg { display: block; max-width: 100%; height: auto; }

a { color: inherit; text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }

h1, h2, h3, h4 {
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin: 0 0 0.5em;
}

h1 { font-size: clamp(2.25rem, 5.5vw, 4rem); letter-spacing: -0.035em; }
h2 { font-size: clamp(1.75rem, 3.5vw, 2.5rem); letter-spacing: -0.025em; }
h3 { font-size: 1.125rem; font-weight: 600; }

p { margin: 0 0 1em; color: var(--fg-muted); }

.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding-inline: var(--gutter);
}

/* — Header — */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(250, 250, 249, 0.85);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s;
}
.site-header.scrolled { border-bottom-color: var(--border); }

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 108px;
}
.nav-brand { display: flex; align-items: center; gap: 0; font-weight: 600; letter-spacing: -0.02em; }
.nav-brand .brand-mark { width: 72px; height: 72px; object-fit: contain; }
.nav-brand .brand-wordmark { height: 112px; width: auto; object-fit: contain; margin-left: -6px; }
.nav-links { display: flex; align-items: center; gap: 2rem; }
.nav-links a { font-size: 0.9375rem; color: var(--fg-muted); }
.nav-links a:hover { color: var(--fg); text-decoration: none; }
.nav-cta { display: flex; align-items: center; gap: 0.75rem; }
.lang-switch { font-size: 0.8125rem; color: var(--fg-subtle); display: inline-flex; gap: 0.35rem; }
.lang-switch a[aria-current="true"] { color: var(--fg); font-weight: 600; }

@media (max-width: 760px) {
  .nav-links { display: none; }
}

/* — Buttons — */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.25rem;
  font-size: 0.9375rem;
  font-weight: 500;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.08s ease, background 0.15s ease, border-color 0.15s ease,
    color 0.15s ease;
  font-family: inherit;
}
.btn:hover { text-decoration: none; }
.btn:active { transform: translateY(1px); }

.btn-primary {
  background: var(--fg);
  color: var(--fg-inverse);
}
.btn-primary:hover { background: #1c1917; }

.btn-secondary {
  background: transparent;
  color: var(--fg);
  border-color: var(--border-strong);
}
.btn-secondary:hover { border-color: var(--fg); background: var(--bg-elevated); }

.btn-ghost { background: transparent; color: var(--fg-muted); }
.btn-ghost:hover { color: var(--fg); }

.btn-lg { padding: 0.95rem 1.5rem; font-size: 1rem; }

/* — Hero — */
.hero {
  position: relative;
  padding-block: clamp(4rem, 10vw, 8rem) clamp(3rem, 8vw, 6rem);
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 50% at 50% -10%, rgba(10, 10, 10, 0.06), transparent 60%),
    linear-gradient(180deg, transparent, var(--bg));
  pointer-events: none;
  z-index: 0;
}
.hero-inner { position: relative; z-index: 1; max-width: 920px; }
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.375rem 0.875rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--bg-elevated);
  font-size: 0.8125rem;
  color: var(--fg-muted);
  margin-bottom: 1.75rem;
  box-shadow: var(--shadow-sm);
}
.hero-eyebrow .dot { width: 6px; height: 6px; border-radius: 50%; background: #10b981; box-shadow: 0 0 0 4px rgba(16, 185, 129, 0.15); }

.hero h1 { margin-bottom: 1.25rem; }
.hero p.lead {
  font-size: clamp(1.0625rem, 1.6vw, 1.25rem);
  color: var(--fg-muted);
  max-width: 680px;
  margin-bottom: 2.25rem;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 0.75rem; align-items: center; }
.hero-trust {
  margin-top: 3rem;
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem 2.5rem;
  font-size: 0.875rem;
  color: var(--fg-subtle);
}
.hero-trust span { display: inline-flex; align-items: center; gap: 0.5rem; }
.hero-trust svg { width: 16px; height: 16px; flex-shrink: 0; }

/* — Section base — */
section { padding-block: clamp(4rem, 8vw, 7rem); }
.section-head { max-width: 720px; margin-bottom: 3.5rem; }
.section-eyebrow {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--fg-subtle);
  margin-bottom: 1rem;
}
.section-head p { font-size: 1.0625rem; max-width: 620px; }

/* — Features grid — */
.grid {
  display: grid;
  gap: 1.25rem;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}
.card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  transition: border-color 0.15s ease, transform 0.15s ease;
}
.card:hover { border-color: var(--border-strong); }
.card h3 { margin-bottom: 0.5rem; font-size: 1.125rem; }
.card p { font-size: 0.9375rem; margin: 0; }
.card .icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px; height: 40px;
  border-radius: 10px;
  background: var(--bg-inverse);
  color: var(--fg-inverse);
  margin-bottom: 1.25rem;
}
.card .icon svg { width: 20px; height: 20px; }

/* — Steps — */
.steps {
  display: grid;
  gap: 1.25rem;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  counter-reset: step;
}
.step {
  position: relative;
  padding: 1.75rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--bg-elevated);
}
.step::before {
  counter-increment: step;
  content: counter(step, decimal-leading-zero);
  display: block;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--fg-subtle);
  margin-bottom: 0.75rem;
  letter-spacing: 0.05em;
}
.step h3 { font-size: 1.125rem; margin-bottom: 0.5rem; }
.step p { font-size: 0.9375rem; margin: 0; }

/* — Diff section — */
.diff {
  background: var(--bg-inverse);
  color: var(--fg-inverse);
  border-radius: var(--radius-lg);
  padding: clamp(2.5rem, 5vw, 4rem);
  display: grid;
  gap: 2.5rem;
  grid-template-columns: 1fr 1fr;
  align-items: center;
}
.diff h2 { color: var(--fg-inverse); }
.diff p { color: rgba(250, 250, 249, 0.7); }
.diff-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 1rem; }
.diff-list li {
  display: flex; gap: 0.75rem; align-items: flex-start;
  padding: 1rem 1.25rem;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius);
}
.diff-list strong { display: block; color: var(--fg-inverse); margin-bottom: 0.15rem; font-weight: 600; }
.diff-list span { color: rgba(250, 250, 249, 0.65); font-size: 0.9375rem; }
.diff-list svg { width: 18px; height: 18px; flex-shrink: 0; margin-top: 2px; color: #10b981; }

@media (max-width: 820px) {
  .diff { grid-template-columns: 1fr; padding: 2rem; }
}

/* — FAQ — */
.faq { max-width: 820px; }
.faq details {
  border-bottom: 1px solid var(--border);
  padding: 1.25rem 0;
}
.faq details[open] summary { color: var(--fg); }
.faq summary {
  cursor: pointer;
  font-weight: 600;
  font-size: 1rem;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  color: var(--fg);
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+";
  font-weight: 300;
  font-size: 1.5rem;
  color: var(--fg-subtle);
  transition: transform 0.2s;
}
.faq details[open] summary::after { content: "−"; }
.faq .answer { padding-top: 0.75rem; color: var(--fg-muted); font-size: 0.9375rem; }
.faq .answer p { margin: 0; }

/* — CTA — */
.cta-final {
  text-align: center;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: clamp(2.5rem, 6vw, 5rem) clamp(1.5rem, 4vw, 3rem);
}
.cta-final h2 { margin-bottom: 1rem; }
.cta-final p { max-width: 560px; margin-inline: auto; margin-bottom: 2rem; font-size: 1.0625rem; }

/* — Waitlist form — */
.waitlist {
  display: flex;
  gap: 0.5rem;
  max-width: 480px;
  margin-inline: auto;
  flex-wrap: wrap;
}
.waitlist input[type="email"] {
  flex: 1;
  min-width: 220px;
  padding: 0.875rem 1rem;
  font-size: 0.9375rem;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  background: var(--bg);
  color: var(--fg);
  font-family: inherit;
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.waitlist input[type="email"]:focus {
  border-color: var(--fg);
  box-shadow: 0 0 0 3px rgba(10, 10, 10, 0.08);
}
.waitlist .feedback {
  flex-basis: 100%;
  font-size: 0.8125rem;
  color: var(--fg-subtle);
  margin-top: 0.5rem;
  min-height: 1.2em;
  text-align: left;
}
.waitlist .feedback.success { color: #047857; }
.waitlist .feedback.error { color: #b91c1c; }

/* — Footer — */
.site-footer {
  border-top: 1px solid var(--border);
  padding-block: 2.5rem;
  margin-top: 2rem;
}
.site-footer .row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.875rem;
  color: var(--fg-subtle);
}
.site-footer .row a { color: var(--fg-muted); }

/* — A11y — */
.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;
}
:focus-visible {
  outline: 2px solid var(--fg);
  outline-offset: 2px;
  border-radius: 4px;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}