:root {
  color-scheme: light dark;
  --blue: #005a9c;
  --blue-deep: #003f70;
  --ink: #17324a;
  --muted: #61768a;
  --paper: rgba(255, 255, 255, 0.94);
  --line: rgba(23, 50, 74, 0.13);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

body {
  min-height: 100vh;
  min-height: 100dvh;
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 14% 12%, rgba(89, 176, 115, 0.23), transparent 31rem),
    radial-gradient(circle at 88% 88%, rgba(0, 90, 156, 0.22), transparent 34rem),
    #f5f2e9;
}

.login-shell {
  min-height: 100vh;
  min-height: 100dvh;
  display: grid;
  place-items: center;
  padding: max(24px, env(safe-area-inset-top)) 20px max(24px, env(safe-area-inset-bottom));
}

.login-card {
  width: min(100%, 430px);
  padding: 38px 32px 30px;
  border: 1px solid var(--line);
  border-radius: 28px;
  background: var(--paper);
  box-shadow: 0 24px 70px rgba(29, 53, 74, 0.17);
  backdrop-filter: blur(18px);
  text-align: center;
}

.cart-mark {
  width: 72px;
  height: 72px;
  display: grid;
  place-items: center;
  margin: 0 auto 20px;
  border-radius: 22px;
  background: linear-gradient(145deg, #0873bd, var(--blue-deep));
  box-shadow: 0 13px 28px rgba(0, 90, 156, 0.24);
  font-size: 34px;
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--blue);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-size: clamp(30px, 8vw, 40px);
  line-height: 1.06;
  letter-spacing: -0.035em;
}

.login-copy {
  margin: 18px auto 26px;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.55;
}

.google-button {
  min-height: 54px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  border: 1px solid #c8d0d8;
  border-radius: 14px;
  color: #243746;
  background: #fff;
  box-shadow: 0 5px 15px rgba(22, 46, 66, 0.08);
  font-size: 16px;
  font-weight: 700;
  text-decoration: none;
  transition: transform 120ms ease, box-shadow 120ms ease;
}

.google-button:active {
  transform: translateY(1px);
  box-shadow: 0 2px 7px rgba(22, 46, 66, 0.1);
}

.google-button:focus-visible {
  outline: 3px solid rgba(0, 90, 156, 0.32);
  outline-offset: 3px;
}

.google-g {
  color: #4285f4;
  font: 800 22px/1 Arial, sans-serif;
}

.login-note {
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.login-error {
  margin: 0 0 18px;
  padding: 12px 14px;
  border: 1px solid #e6b7b7;
  border-radius: 12px;
  color: #8b2020;
  background: #fff1f1;
  font-size: 14px;
  line-height: 1.4;
}

@media (prefers-color-scheme: dark) {
  :root {
    --ink: #eef6fc;
    --muted: #b4c3cf;
    --paper: rgba(20, 34, 47, 0.94);
    --line: rgba(226, 240, 250, 0.14);
  }
  body { background: radial-gradient(circle at 15% 8%, #153d32, transparent 32rem), #0c1721; }
  .login-error { color: #ffc7c7; background: #421f24; border-color: #704048; }
}

@media (max-width: 440px) {
  .login-card { padding: 32px 22px 26px; border-radius: 24px; }
}