/* Sign-in page: one card. Same palette as the app's "Blue Note" theme. */
:root {
  --ground: #0E0A24;
  --surface: #17123A;
  --surface-2: #1F1850;
  --ink: #EEEAFE;
  --ink-2: #C4BCEB;
  --muted: #8C84B8;
  --line: #2E2766;
  --violet: #8B6CFF;
  --cobalt: #6F9BFF;
  --orchid: #E08BFF;
  --brass: #F2B84B;
  --crit: #FF7A8A;
  --ok: #6EE7B7;
  --font-display: "Big Shoulders Display", "Arial Narrow", system-ui, sans-serif;
  --font-sans: "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, Menlo, monospace;
  color-scheme: dark;
}

* { box-sizing: border-box; }

html, body { height: 100%; }

body {
  margin: 0;
  background:
    radial-gradient(900px 600px at 0% 0%, rgb(139 108 255 / 0.28), transparent 60%),
    radial-gradient(800px 520px at 100% 100%, rgb(111 155 255 / 0.20), transparent 60%),
    var(--ground);
  color: var(--ink);
  font: 400 15px/1.5 var(--font-sans);
  -webkit-font-smoothing: antialiased;
}

.panel {
  min-height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 18px;
  padding: 32px clamp(16px, 5vw, 64px);
}

.card {
  width: 100%;
  max-width: 400px;
  background: color-mix(in srgb, var(--surface) 88%, transparent);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 32px 28px;
  box-shadow: 0 24px 60px rgb(0 0 0 / 0.35);
}

.brand {
  margin: 0 0 24px;
  font: 900 40px/0.9 var(--font-display);
  text-transform: uppercase;
  letter-spacing: 0.02em;
}
.brand span { color: var(--violet); }

.step { display: flex; flex-direction: column; gap: 10px; }
.step[hidden] { display: none; }

label {
  font: 500 11px/1 var(--font-mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-2);
}

input {
  width: 100%;
  padding: 13px 14px;
  font: 400 16px/1.2 var(--font-sans);
  color: var(--ink);
  background: var(--ground);
  border: 1px solid var(--line);
  border-radius: 4px;
}
input::placeholder { color: var(--muted); }
input:focus { outline: none; border-color: var(--violet); box-shadow: 0 0 0 3px rgb(139 108 255 / 0.3); }

#code {
  font: 500 28px/1 var(--font-mono);
  letter-spacing: 0.5em;
  text-align: center;
  padding-left: calc(14px + 0.25em);
}

button {
  font: inherit;
  cursor: pointer;
}

#send, #verify {
  margin-top: 6px;
  padding: 13px 16px;
  border: 0;
  border-radius: 4px;
  font: 700 18px/1 var(--font-display);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ground);
  background: linear-gradient(90deg, var(--violet), var(--cobalt));
  transition: filter 120ms ease, transform 120ms ease;
}
#send:hover, #verify:hover { filter: brightness(1.1); }
#send:active, #verify:active { transform: translateY(1px); }
#send:disabled, #verify:disabled { opacity: 0.55; cursor: progress; }

/* The passkey way in, under the email form (public/passkey.js). Hidden until the browser says it can. */
.alt { display: flex; flex-direction: column; gap: 10px; margin-top: 16px; }
.alt[hidden] { display: none; }
.or {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0;
  font: 500 11px/1 var(--font-mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}
.or::before, .or::after { content: ""; flex: 1; height: 1px; background: var(--line); }
#passkey {
  padding: 12px 16px;
  border: 1px solid var(--line);
  border-radius: 4px;
  font: 700 18px/1 var(--font-display);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink);
  background: var(--surface-2);
  transition: border-color 120ms ease, transform 120ms ease;
}
#passkey:hover { border-color: var(--violet); }
#passkey:active { transform: translateY(1px); }
#passkey:disabled { opacity: 0.55; cursor: progress; }
.alt-note { margin: -2px 0 0; text-align: center; font-size: 12px; color: var(--muted); }

.row { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; margin-top: 4px; }
.link {
  padding: 0;
  border: 0;
  background: none;
  color: var(--cobalt);
  font-size: 13px;
  text-decoration: underline;
  text-underline-offset: 3px;
}
.link:disabled { color: var(--muted); text-decoration: none; cursor: default; }

.sent { margin: 0 0 4px; color: var(--ink-2); font-size: 14px; }
.sent strong { color: var(--ink); font-weight: 600; }

.msg { min-height: 1.5em; margin: 14px 0 0; font-size: 14px; color: var(--ink-2); }
.msg.error { color: var(--crit); }
.msg.ok { color: var(--ok); }

:focus-visible { outline: 2px solid var(--brass); outline-offset: 2px; }

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}
.msg:empty { min-height: 0; margin: 0; }