/* ─────────────────────────────────────────────────────────────────────────────
   Slab Brain Visualizer — lock.css
   All colors via design-system tokens. No hardcoded hex.
───────────────────────────────────────────────────────────────────────────── */

:root {
  --bg:        var(--color-bg);
  --surface:   var(--color-surface);
  --card:      var(--color-surface-raised);
  --text:      var(--color-text-primary);
  --muted-2:   var(--color-text-secondary);
  --muted:     var(--color-text-tertiary);
  --border:    var(--color-border);
  --border-s:  var(--color-border-strong);
  --accent:    var(--color-accent);
  --accent-txt:var(--color-accent-text);
  --danger:    var(--color-danger);
  --danger-sub:var(--color-danger-subtle);
  --sh-md:  0 4px 12px rgba(0,0,0,.06), 0 2px 4px rgba(0,0,0,.03);
  --sh-xl:  0 20px 60px rgba(0,0,0,.10), 0 8px 16px rgba(0,0,0,.05);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
  height: 100%;
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
}

.wrap {
  min-height: 100%;
  display: grid;
  place-items: center;
  padding: 24px;
}

.card {
  width: 100%;
  max-width: 400px;
  background: var(--card);
  border: 0.5px solid var(--border);
  border-radius: 16px;
  padding: 32px 28px;
  box-shadow: var(--sh-xl);
  text-align: center;
}

/* Logo */
.lockLogo {
  display: block;
  margin: 0 auto 16px;
  max-width: 120px;
  height: auto;
  object-fit: contain;
}

/* Heading */
h1 {
  font-family: 'Playfair Display', Georgia, serif;
  font-size: 24px;
  font-weight: 400;
  color: var(--text);
  margin: 0 0 6px;
  letter-spacing: -0.01em;
}

/* Sub */
.sub {
  font-size: 13px;
  color: var(--muted-2);
  margin: 0 0 24px;
  line-height: 1.45;
}

/* Form — stacked */
form {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

input {
  width: 100%;
  height: 44px;
  padding: 0 14px;
  border-radius: 8px;
  border: 1px solid var(--border-s);
  background: var(--surface);
  color: var(--text);
  font-family: 'Inter', sans-serif;
  font-size: 14px;
  outline: none;
  text-align: center;
  letter-spacing: 0.12em;
  transition: border-color 0.15s ease;
}
input:focus { border-color: var(--accent); border-width: 1.5px; }
input::placeholder { color: var(--muted); letter-spacing: 0; }

button {
  width: 100%;
  height: 44px;
  border-radius: 8px;
  border: none;
  background: var(--accent);
  color: var(--accent-txt);
  font-family: 'Inter', sans-serif;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: opacity 0.15s ease, transform 0.10s ease;
}
button:hover:not(:disabled)  { opacity: 0.90; }
button:active:not(:disabled) { transform: translateY(1px); }
button:disabled { opacity: 0.40; cursor: not-allowed; }

/* Error message */
.msg {
  margin-top: 12px;
  min-height: 18px;
  font-size: 13px;
  color: var(--danger);
}