@import url("https://fonts.googleapis.com/css2?family=Instrument+Serif&family=Geist:wght@400;500;600&family=Geist+Mono:wght@400;500;600&display=swap");

:root {
  --neutral-100: #f3f4f6;
  --neutral-200: #e5e7eb;
  --neutral-400: #9ca3af;
  --neutral-600: #4b5563;
  --neutral-800: #1f2937;
  --neutral-950: #0b1020;
  --mas-600: #1f5fbf;
  --mas-700: #174b99;
}
* { box-sizing: border-box; }
body {
  min-height: 100vh;
  margin: 0;
  background: var(--neutral-100);
  color: var(--neutral-800);
  font-family: Geist, sans-serif;
}
.auth-shell {
  display: grid;
  min-height: 100vh;
  place-items: center;
  padding: 28px 16px;
}
.auth-card {
  width: min(100%, 420px);
  padding: 34px 36px 30px;
  border: 1px solid var(--neutral-200);
  border-radius: 10px;
  background: #fff;
  box-shadow: 0 16px 50px rgba(15, 23, 42, .06);
}
.wordmark {
  color: var(--neutral-950);
  font-family: "Instrument Serif", serif;
  font-size: 28px;
}
.product-tag {
  margin-top: 2px;
  color: var(--mas-600);
  font: 500 9px "Geist Mono", monospace;
  letter-spacing: .15em;
}
h1 {
  margin: 28px 0 5px;
  color: var(--neutral-950);
  font: 400 31px "Instrument Serif", serif;
}
.intro {
  margin: 0 0 22px;
  color: var(--neutral-600);
  font-size: 12px;
  line-height: 1.55;
}
form { display: grid; gap: 14px; }
label {
  display: grid;
  gap: 6px;
  color: var(--neutral-600);
  font: 500 9px "Geist Mono", monospace;
  letter-spacing: .1em;
}
input {
  width: 100%;
  padding: 10px 11px;
  border: 1px solid var(--neutral-200);
  border-radius: 5px;
  outline: none;
  color: var(--neutral-950);
  font: 13px Geist, sans-serif;
}
input:focus {
  border-color: var(--mas-600);
  box-shadow: 0 0 0 2px rgba(31, 95, 191, .1);
}
.field-note {
  color: var(--neutral-400);
  font-size: 8px;
  letter-spacing: .03em;
}
button {
  margin-top: 4px;
  padding: 10px 14px;
  border: 1px solid var(--mas-700);
  border-radius: 5px;
  background: var(--mas-600);
  color: #fff;
  cursor: pointer;
  font: 500 11px "Geist Mono", monospace;
  letter-spacing: .04em;
}
button:hover { background: var(--mas-700); }
.auth-error {
  margin-bottom: 16px;
  padding: 9px 11px;
  border: 1px solid #efc5c5;
  border-radius: 5px;
  background: #fff3f3;
  color: #963b3b;
  font-size: 11px;
}
.alternate {
  margin: 20px 0 0;
  color: var(--neutral-600);
  font-size: 11px;
  text-align: center;
}
a { color: var(--mas-600); text-decoration: none; }
a:hover { text-decoration: underline; }