/* Quiet and spacious: near-white canvas, graphite ink, system type,
   one clear blue button, generous radii, a frosted composer. */
:root {
  --bg: #f5f5f7; --surface: #ffffff; --surface-2: #ebebf0; --fg: #1d1d1f; --muted: #6e6e73; --border: #d2d2d7;
  --accent: #0071e3; --accent-fg: #ffffff; --danger: #d70015; --ok: #248a3d;
  --glow: #0071e3; --glow-2: #5ac8fa;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
  --font: -apple-system, BlinkMacSystemFont, "Helvetica Neue", "Segoe UI", Arial, sans-serif;
  --ease: cubic-bezier(0.28, 0.11, 0.32, 1);
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #000000; --surface: #1d1d1f; --surface-2: #2c2c2e; --fg: #f5f5f7; --muted: #86868b; --border: #3a3a3c;
    --accent: #2997ff; --accent-fg: #ffffff; --danger: #ff453a; --ok: #30d158;
    --glow: #2997ff; --glow-2: #64d2ff;
    --shadow: 0 4px 24px rgba(0, 0, 0, 0.6);
  }
}

*, *::before, *::after { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 17px/1.47 var(--font);
  letter-spacing: -0.011em;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* A soft wash of accent light behind the composer. */
body::before {
  content: "";
  position: fixed;
  inset: 50% auto auto 50%;
  width: min(720px, 120vw); aspect-ratio: 1;
  transform: translate(-50%, -50%);
  background: radial-gradient(closest-side, color-mix(in srgb, var(--glow-2) 22%, transparent), color-mix(in srgb, var(--glow) 8%, transparent) 55%, transparent);
  filter: blur(40px);
  pointer-events: none;
  z-index: 0;
}

main {
  position: relative; z-index: 1;
  min-height: 100%;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 40px;
  padding: 48px 16px 18vh;
}

#title { margin: 0; line-height: 0; }
#title img { display: block; width: clamp(220px, 40vw, 360px); height: auto; }

form { width: 100%; max-width: 460px; }

.composer {
  display: flex; align-items: center; gap: 8px;
  padding: 6px 6px 6px 20px;
  border: 1px solid color-mix(in srgb, var(--border) 70%, transparent);
  border-radius: 980px;
  background: color-mix(in srgb, var(--surface) 82%, transparent);
  -webkit-backdrop-filter: saturate(180%) blur(20px); backdrop-filter: saturate(180%) blur(20px);
  box-shadow: var(--shadow);
  transition: border-color .2s var(--ease), box-shadow .2s var(--ease);
}
.composer:focus-within {
  border-color: var(--accent);
  box-shadow: var(--shadow), 0 0 0 4px color-mix(in srgb, var(--accent) 25%, transparent);
}

input[type="email"] {
  flex: 1; min-width: 0;
  border: 0; outline: 0; background: transparent;
  color: var(--fg);
  font: inherit; letter-spacing: inherit;
  padding: 10px 0;
}
input[type="email"]::placeholder { color: var(--muted); }

button {
  flex: none;
  border: 0; border-radius: 980px;
  padding: 11px 20px;
  background: var(--accent); color: var(--accent-fg);
  font: inherit; font-size: 15px; font-weight: 500; letter-spacing: -0.01em;
  cursor: pointer;
  transition: filter .15s var(--ease), opacity .15s var(--ease);
}
button:hover { filter: brightness(0.92); }
button:disabled { opacity: .6; cursor: progress; }
:focus-visible { outline: 3px solid color-mix(in srgb, var(--accent) 55%, transparent); outline-offset: 2px; }
.composer :focus-visible { outline-offset: 3px; }
input:focus-visible { outline: 0; }

.status {
  min-height: 1.47em;
  margin: 14px 0 0;
  text-align: center;
  font-size: 15px;
  color: var(--muted);
}
.status.ok { color: var(--ok); }
.status.error { color: var(--danger); }

form.done .composer { display: none; }
form.done .status { font-size: 17px; color: var(--fg); }

.fine {
  margin: 10px 0 0;
  text-align: center;
  font-size: 13px;
  color: var(--muted);
}
.fine a { color: inherit; text-underline-offset: 2px; }
form.done .fine { display: none; }

.sr-only, .hp {
  position: absolute !important;
  width: 1px; height: 1px; overflow: hidden;
  clip: rect(0 0 0 0); clip-path: inset(50%);
  white-space: nowrap;
}

@media (max-width: 380px) {
  .composer { padding-left: 16px; }
  button { padding: 11px 14px; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}