/* STRIDE LAB — sign-in page (same look as the simulator, see css/style.css) */
:root {
  --font: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, "Cascadia Mono", Consolas, monospace;
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0a0c0f; --surface-1: #101318; --surface-2: #14181e; --surface-3: #1b2028;
  --line: #232a33; --line-2: #2e3743; --text: #e7ecf1; --text-2: #a9b4c0; --muted: #6c7886;
  --accent: #00d4ff; --accent-soft: rgba(0,212,255,.14); --red: #ff4d5e;
  --glow: 0 0 0 1px rgba(0,212,255,.35), 0 0 18px rgba(0,212,255,.18); --shadow: 0 10px 30px rgba(0,0,0,.45);
}
:root[data-theme="light"] {
  color-scheme: light;
  --bg: #e8ecf0; --surface-1: #f5f7f9; --surface-2: #ffffff; --surface-3: #eef1f4;
  --line: #d6dce2; --line-2: #c5cdd5; --text: #12161b; --text-2: #3d4651; --muted: #7a8591;
  --accent: #0094c2; --accent-soft: rgba(0,148,194,.12); --red: #d42c40;
  --glow: 0 0 0 1px rgba(0,148,194,.35), 0 0 14px rgba(0,148,194,.12); --shadow: 0 10px 28px rgba(30,45,60,.14);
}
* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; background: var(--bg); color: var(--text); font: 13px/1.4 var(--font); -webkit-font-smoothing: antialiased; }
body { display: flex; flex-direction: column; min-height: 100vh; }
.card { margin: auto; width: min(360px, calc(100% - 32px)); padding: 26px 24px 24px; background: var(--surface-1); border: 1px solid var(--line); border-radius: 12px; box-shadow: var(--shadow); }
.brand { display: flex; align-items: center; gap: 10px; }
.logo { width: 34px; height: 34px; padding: 4px; border-radius: 8px; background: var(--surface-3); box-shadow: var(--glow); }
.logo path { fill: none; stroke: var(--accent); stroke-width: 2.4; stroke-linejoin: round; }
.logo circle { fill: var(--accent); }
.brand-name { font-weight: 700; letter-spacing: .18em; font-size: 14px; }
.brand-sub { font-size: 10.5px; color: var(--muted); letter-spacing: .04em; }
h1 { margin: 22px 0 12px; font: 600 11px var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--text-2); }
form { display: flex; flex-direction: column; }
label { font-size: 10px; letter-spacing: .09em; text-transform: uppercase; color: var(--muted); margin: 10px 0 5px; }
input { height: 36px; padding: 0 10px; border-radius: 7px; border: 1px solid var(--line-2); background: var(--surface-2); color: var(--text); font: 13px var(--font); }
input:focus { outline: none; border-color: var(--accent); box-shadow: var(--glow); }
button { margin-top: 18px; height: 36px; border-radius: 7px; border: 1px solid var(--accent); background: var(--accent-soft); color: var(--accent); font: 600 11px var(--mono); letter-spacing: .1em; cursor: pointer; }
button:hover { background: var(--accent); color: var(--surface-1); }
.msg { margin: 0 0 6px; padding: 8px 10px; border-radius: 7px; border: 1px solid var(--red); color: var(--red); font-size: 12px; }
.footer { padding: 6px 16px; text-align: center; background: var(--surface-1); border-top: 1px solid var(--line); font-size: 10.5px; color: var(--muted); }
.footer a { color: inherit; }
.top { display: flex; justify-content: flex-end; margin: -10px -6px 6px 0; }
.lang-sel { height: 26px; border-radius: 6px; border: 1px solid var(--line-2); background: var(--surface-2); color: var(--text); font: 600 10.5px var(--mono); padding: 0 6px; }
.alt { margin: 14px 0 0; font-size: 12px; color: var(--muted); text-align: center; }
.alt a { color: var(--accent); text-decoration: none; }
.alt a:hover { text-decoration: underline; }