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

:root {
  --bg:          #050505;
  --surface:     rgba(255,255,255,0.04);
  --border:      rgba(255,255,255,0.10);
  --accent:      #f5f5f5;
  --accent-dim:  rgba(255,255,255,0.08);
  --danger:      #ef4444;
  --danger-dim:  rgba(239,68,68,0.1);
  --text:        #f5f5f5;
  --text-sub:    #a1a1aa;
  --radius:      10px;
}

html, body {
  height: 100%;
  font-family: 'Inter', system-ui, sans-serif;
  font-weight: 300;
  background:
    radial-gradient(circle at top left, rgba(255,255,255,0.06), transparent 26%),
    radial-gradient(circle at top right, rgba(255,255,255,0.04), transparent 18%),
    linear-gradient(180deg, rgba(255,255,255,0.01), transparent 24%),
    var(--bg);
  color: var(--text);
}

body {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
}

.wrap {
  width: 100%;
  max-width: 360px;
  padding: 1.5rem;
}

.brand {
  margin-bottom: 2.5rem;
}

.brand-name {
  font-size: .95rem;
  font-weight: 500;
  letter-spacing: .01em;
  color: var(--text);
}

.brand-name span {
  color: var(--accent);
}

h1 {
  font-size: 1.45rem;
  font-weight: 400;
  letter-spacing: -.025em;
  margin-bottom: .35rem;
}

.subtitle {
  font-size: .82rem;
  color: var(--text-sub);
  margin-bottom: 2rem;
}

.field {
  margin-bottom: 1rem;
}

label {
  display: block;
  font-size: .72rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--text-sub);
  margin-bottom: .45rem;
}

.input-wrap {
  position: relative;
}

input[type=password],
input[type=text] {
  width: 100%;
  padding: .7rem 2.5rem .7rem .85rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-family: inherit;
  font-size: .9rem;
  font-weight: 300;
  outline: none;
  transition: border-color .2s;
  -webkit-appearance: none;
}

input:focus {
  border-color: rgba(255,255,255,0.28);
}

.toggle-pw {
  position: absolute;
  right: .75rem;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-sub);
  font-size: .72rem;
  font-family: inherit;
  font-weight: 500;
  letter-spacing: .04em;
  text-transform: uppercase;
  padding: 0;
  transition: color .2s;
}

.toggle-pw:hover { color: var(--text); }

.btn {
  width: 100%;
  padding: .72rem;
  margin-top: .5rem;
  background: var(--accent);
  border: none;
  border-radius: var(--radius);
  color: #111;
  font-family: inherit;
  font-size: .88rem;
  font-weight: 600;
  letter-spacing: .01em;
  cursor: pointer;
  transition: background .2s, opacity .2s;
}

.btn:hover { background: #eaeaea; }
.btn:disabled { opacity: .4; cursor: not-allowed; }

.error {
  padding: .65rem .85rem;
  background: var(--danger-dim);
  border: 1px solid rgba(239,68,68,0.2);
  border-radius: var(--radius);
  font-size: .82rem;
  color: #fca5a5;
  margin-bottom: 1rem;
}