/* 
  Premium, elegant static landing
  Palette: black / white / grey (3-5 colors total)
  Glass effect: translucent card + subtle border + backdrop blur
*/

/* Theme tokens */
:root {
  --bg: #0b0b0b; /* near-black background */
  --fg: #f5f5f5; /* soft white foreground */
  --muted: #a1a1a1; /* neutral grey for secondary text */
  --card: rgba(255, 255, 255, 0.04); /* glass background tint */
  --border: rgba(255, 255, 255, 0.12); /* subtle glass border */
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
  --radius: 16px;
}

/* Base reset-ish */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
}

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

body {
  margin: 0;
  background-color: var(--bg);
  color: var(--fg);
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji",
    "Segoe UI Emoji";
  line-height: 1.6;
  letter-spacing: 0.01em;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

/* Layout */
.wrapper {
  width: 100%;
  max-width: 980px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.glass-card {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 20px;
  padding: 28px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  backdrop-filter: blur(12px) saturate(140%);
  -webkit-backdrop-filter: blur(12px) saturate(140%);
  box-shadow: var(--shadow);
}

/* Fallback if backdrop-filter unsupported */
@supports not ((backdrop-filter: blur(0))) {
  .glass-card {
    background: rgba(255, 255, 255, 0.06);
  }
}

/* Header */
.header {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.title {
  margin: 0;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  font-size: clamp(28px, 6vw, 56px);
  text-wrap: balance;
}

.sub {
  margin: 0;
  color: var(--muted);
  font-size: clamp(14px, 2.2vw, 18px);
}

/* Body copy */
.copy {
  margin: 0;
  color: var(--fg);
  opacity: 0.9;
  font-size: clamp(14px, 2.4vw, 18px);
}

/* Actions */
.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 4px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 18px;
  border-radius: 9999px;
  border: 1px solid transparent;
  background: var(--fg); /* white button for strong contrast */
  color: var(--bg); /* black text on white */
  font-weight: 600;
  text-decoration: none;
  transition: transform 120ms ease, opacity 120ms ease, background-color 160ms ease, border-color 160ms ease;
  will-change: transform;
}

.btn:hover {
  opacity: 0.95;
}

.btn:active {
  transform: translateY(1px) scale(0.99);
}

.btn:focus-visible {
  outline: 2px solid var(--fg);
  outline-offset: 2px;
}

/* Footer note */
.footer {
  margin-top: 8px;
  display: flex;
  align-items: center;
  justify-content: flex-start;
}

.note {
  color: var(--muted);
  font-size: 13px;
  letter-spacing: 0.02em;
}

/* Larger screens */
@media (min-width: 768px) {
  .glass-card {
    padding: 40px;
    gap: 24px;
  }
}