<form class="lf-vault" aria-label="Vault sign in">
  <figure class="lf-vault-lock" aria-hidden="true">
    <span class="lf-vault-dial"></span>
    <span class="lf-vault-bolt"></span>
  </figure>
  <h2 class="lf-vault-title">Vault access</h2>
  <p class="lf-vault-sub">Authenticate to view encrypted contents</p>
  <label class="lf-vault-field">
    <span>Email</span>
    <input type="email" name="email" autocomplete="email" placeholder="[email protected]" required />
  </label>
  <label class="lf-vault-field lf-vault-pw">
    <span>Master password</span>
    <input
      type="password"
      name="password"
      autocomplete="current-password"
      placeholder="••••••••"
      required
    />
  </label>
  <button type="submit" class="lf-vault-btn">Unlock</button>
</form>

.lf-vault {
  width: 100%;
  max-width: 300px;
  background: #15151d;
  border: 1px solid rgba(255, 255, 255, 0.07);
  border-radius: 16px;
  padding: 26px 22px 22px;
  display: grid;
  gap: 10px;
  justify-items: center;
  text-align: center;
}
.lf-vault-lock {
  position: relative;
  margin: 0 0 6px;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, #2a2a36 0%, #15151d 70%);
  border: 2px solid #2eb88a;
  box-shadow:
    0 0 0 4px rgba(46, 184, 138, 0.08),
    0 0 24px rgba(46, 184, 138, 0.25);
  transition:
    border-color 0.3s,
    box-shadow 0.3s;
}
.lf-vault-dial {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 26px;
  height: 3px;
  background: #2eb88a;
  border-radius: 2px;
  transform: translate(-50%, -50%) rotate(35deg);
  transform-origin: center;
  transition:
    transform 0.5s cubic-bezier(0.5, 0, 0.3, 1.3),
    background 0.3s;
}
.lf-vault-dial::after {
  content: "";
  position: absolute;
  inset: -3px auto -3px -3px;
  width: 9px;
  border-radius: 50%;
  background: #2eb88a;
  transition: background 0.3s;
}
.lf-vault-bolt {
  position: absolute;
  bottom: -8px;
  left: 50%;
  width: 14px;
  height: 18px;
  background: #2eb88a;
  border-radius: 3px;
  transform: translateX(-50%) translateY(0);
  transition:
    transform 0.35s ease,
    background 0.3s;
}
.lf-vault:has(.lf-vault-pw input:focus) .lf-vault-lock {
  border-color: #7c6cff;
  box-shadow:
    0 0 0 4px rgba(124, 108, 255, 0.12),
    0 0 28px rgba(124, 108, 255, 0.45);
}
.lf-vault:has(.lf-vault-pw input:focus) .lf-vault-dial {
  transform: translate(-50%, -50%) rotate(220deg);
  background: #7c6cff;
}
.lf-vault:has(.lf-vault-pw input:focus) .lf-vault-dial::after {
  background: #7c6cff;
}
.lf-vault:has(.lf-vault-pw input:focus) .lf-vault-bolt {
  transform: translateX(-50%) translateY(8px);
  background: #7c6cff;
}
.lf-vault-title {
  margin: 0;
  font-size: 15px;
  font-weight: 700;
  color: #f0eeff;
}
.lf-vault-sub {
  margin: 0 0 4px;
  font-size: 11px;
  color: #b8b6d4;
}
.lf-vault-field {
  display: grid;
  gap: 4px;
  font-size: 11px;
  color: #b8b6d4;
  width: 100%;
  text-align: left;
}
.lf-vault-field input {
  width: 100%;
  box-sizing: border-box;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  padding: 10px 12px;
  font-size: 13px;
  color: #f0eeff;
  outline: none;
  transition: border-color 0.15s;
}
.lf-vault-field input:focus {
  border-color: #7c6cff;
}
.lf-vault-btn {
  width: 100%;
  padding: 11px;
  background: linear-gradient(135deg, #7c6cff, #ff6c8a);
  color: white;
  border: none;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.12s;
}
.lf-vault-btn:hover {
  transform: translateY(-1px);
}