:root {
  --teal: #128f8b;
  --teal-dark: #0d6f6c;
  --teal-deep: #0a4644;
  --teal-light: #aad4cd;
  --lime: #e4eb62;
  --pink: #d166a7;
  --ink: #23302f;
  --muted: #5d6b6a;
  --line: #dfe7e6;
  --paper: #ffffff;
  --bg: #f4f7f7;
  --radius: 10px;
  --font: Raleway, "Trebuchet MS", system-ui, -apple-system, "Segoe UI", sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { margin: 0; }
body { font-family: var(--font); color: var(--ink); background: var(--bg); -webkit-font-smoothing: antialiased; }
button, input, select, textarea { font: inherit; color: inherit; }
a { color: var(--teal); }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 40px; padding: 0 16px; border-radius: 8px; border: 1px solid transparent;
  background: var(--teal); color: #fff; font-weight: 600; text-decoration: none; cursor: pointer;
  transition: background .15s, box-shadow .15s, transform .05s;
}
.btn:hover { background: var(--teal-dark); }
.btn:active { transform: translateY(1px); }
.btn:focus-visible { outline: 3px solid var(--lime); outline-offset: 2px; }
.btn-google { background: #fff; color: #1f1f1f; border-color: #c9d3d2; }
.btn-google:hover { background: #f3f6f6; }
.muted { color: var(--muted); font-size: 14px; }

/* Message / sign-in pages */
.message-page { min-height: 100vh; display: grid; place-items: center; padding: 24px 16px;
  background: radial-gradient(1200px 600px at 50% -10%, #1aa6a1 0%, var(--teal) 35%, var(--teal-deep) 100%); }
.message-card { width: 100%; max-width: 420px; background: var(--paper); border-radius: 16px; padding: 32px 28px;
  text-align: center; box-shadow: 0 24px 60px rgba(0,0,0,.25); }
.message-card h1 { margin: 8px 0 12px; font-size: 24px; color: var(--teal); }
.message-card p { line-height: 1.55; margin: 10px 0; }
.message-logo { height: 56px; max-width: 220px; object-fit: contain; background: var(--teal); padding: 10px 16px; border-radius: 10px; }