.login-screen {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  padding: 40px 24px 30px;
  background:
    radial-gradient(circle at 50% 20%, rgba(0,212,255,0.08), transparent 60%),
    var(--bg-primary);
}

.login-brand {
  text-align: center;
  margin-top: 20px;
}
.login-brand h1 {
  font-size: 1.8rem;
  color: var(--blue-electric);
  letter-spacing: 0.1em;
  text-shadow: var(--glow-soft);
}
.login-brand p {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-dim);
  margin-top: 8px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.login-user-box {
  width: 100%;
  max-width: 320px;
  padding: 20px;
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  text-align: center;
}
.login-user-label {
  font-size: 0.7rem;
  color: var(--text-dim);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 10px;
}
.login-user-input {
  width: 100%;
  padding: 14px;
  background: var(--bg-primary);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  text-align: center;
  font-family: var(--font-mono);
  font-size: 1.1rem;
  outline: none;
}
.login-user-input:focus { border-color: var(--blue-electric); box-shadow: var(--glow-soft); }

.pin-display {
  display: flex;
  gap: 10px;
  justify-content: center;
  margin: 20px 0;
}
.pin-dot {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  border: 2px solid var(--glass-border);
  background: transparent;
  transition: all 0.15s;
}
.pin-dot.filled {
  background: var(--blue-electric);
  border-color: var(--blue-electric);
  box-shadow: var(--glow-soft);
}

.pin-hint {
  font-size: 0.75rem;
  color: var(--text-dim);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.pin-pad {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  width: 100%;
  max-width: 320px;
}
.pin-key {
  padding: 18px 0;
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 700;
  transition: all 0.1s;
  user-select: none;
}
.pin-key:active {
  background: rgba(0,212,255,0.2);
  border-color: var(--blue-electric);
  transform: scale(0.95);
}
.pin-key.special {
  background: transparent;
  border-color: transparent;
  color: var(--text-dim);
}
.pin-key.backspace { color: var(--yellow-warn); }

.login-error {
  color: var(--red-alert);
  font-size: 0.85rem;
  min-height: 20px;
  text-align: center;
  margin-top: 8px;
}