/* Renthus Core design tokens — "The Digital Estate" */
:root {
  --bg: #f8f9ff;
  --on-bg: #0b1c30;
  --on-surface: #0b1c30;
  --on-surface-variant: #45464d;
  --primary: #000000;
  --secondary: #006c49;
  --font-display: "Manrope", -apple-system, BlinkMacSystemFont, "Segoe UI",
    Roboto, sans-serif;
  --font-body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--on-bg);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  display: grid;
  grid-template-rows: auto 1fr auto;
  min-height: 100vh;
}

::selection {
  background: #6cf8bb; /* secondary_container */
  color: #00714d; /* on_secondary_container */
}

/* Top-right locale toggle — subtle metadata feel per design-md */
.topbar {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 0.5rem;
  padding: 1.75rem 2.5rem;
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--on-surface-variant);
}

.topbar button {
  appearance: none;
  background: none;
  border: 0;
  padding: 0.25rem 0.375rem;
  color: var(--on-surface-variant);
  font: inherit;
  letter-spacing: inherit;
  cursor: pointer;
  transition: color 120ms ease;
}

.topbar button[aria-pressed="true"] {
  color: var(--on-surface);
}

.topbar button:hover {
  color: var(--on-surface);
}

.topbar-sep {
  opacity: 0.4;
}

/* Stage — asymmetric editorial offset on desktop, centered on mobile */
.stage {
  display: flex;
  align-items: center;
  padding: 2rem 2.5rem;
}

.block {
  width: 100%;
  max-width: 720px;
  margin: 0 auto;
  text-align: left;
}

/* Tiny wordmark with the signature 32px emerald rule beneath */
.eyebrow {
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  color: var(--on-surface);
  margin: 0 0 0.5rem;
}

.eyebrow::after {
  content: "";
  display: block;
  width: 32px;
  height: 2px;
  background: var(--secondary);
  margin-top: 0.5rem;
  transition: width 500ms cubic-bezier(0.2, 0.7, 0.2, 1);
}

.eyebrow:hover::after {
  width: 80px;
}

/* The Hierarchy Tip: massive display headline, dual-tone for contrast */
.headline {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.5rem, 6.5vw, 4.5rem);
  letter-spacing: -0.025em;
  line-height: 1.05;
  margin: 4.5rem 0 1.75rem;
}

.headline-line {
  display: block;
}

.headline-strong {
  color: var(--primary);
}

.headline-muted {
  color: var(--on-surface-variant);
}

/* Body, on_surface_variant, narrow measure */
.body {
  font-family: var(--font-body);
  font-size: clamp(1.0625rem, 1.4vw, 1.1875rem);
  font-weight: 400;
  color: var(--on-surface-variant);
  max-width: 480px;
  margin: 0;
  line-height: 1.5;
}

/* Footer — bottom-left, label-sm, on_surface_variant */
.footer {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 1.75rem 2.5rem;
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--on-surface-variant);
}


/* Desktop — slight asymmetric offset, left of center */
@media (min-width: 900px) {
  .stage {
    padding: 4rem 6rem;
  }
  .block {
    margin: 0;
    margin-left: max(2rem, calc((100vw - 1200px) / 2));
  }
  .footer {
    padding: 2rem 6rem;
  }
  .topbar {
    padding: 2rem 6rem;
  }
}

/* Entrance: subtle, staggered fade + lift on first paint */
@keyframes rise-in {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.eyebrow,
.headline,
.body,
.topbar,
.footer {
  opacity: 0;
  animation: rise-in 700ms cubic-bezier(0.2, 0.7, 0.2, 1) forwards;
}

.topbar {
  animation-delay: 0ms;
}
.eyebrow {
  animation-delay: 120ms;
}
.headline {
  animation-delay: 240ms;
}
.body {
  animation-delay: 420ms;
}
.footer {
  animation-delay: 560ms;
}

@media (prefers-reduced-motion: reduce) {
  * {
    transition: none !important;
    animation: none !important;
  }
  .eyebrow,
  .headline,
  .body,
  .topbar,
  .footer {
    opacity: 1;
  }
}