.login-shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  background: var(--bg);
}

/* ========== Left brand side ========== */
.login-brand {
  position: relative;
  background:
    radial-gradient(ellipse at 20% 20%, rgba(212,175,55,0.12), transparent 55%),
    radial-gradient(ellipse at 80% 80%, rgba(90,168,255,0.06), transparent 50%),
    linear-gradient(160deg, #15151c 0%, #08080b 100%);
  overflow: hidden;
  border-right: 1px solid var(--border);
}

.login-brand::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
}

.login-brand-inner {
  position: relative;
  z-index: 2;
  padding: 56px 60px;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.brand-tagline {
  margin-top: auto;
  margin-bottom: auto;
  padding: 60px 0;
}
.brand-tagline h1 {
  font-size: 64px;
  font-weight: 200;
  letter-spacing: 0.01em;
  line-height: 1.05;
  margin-bottom: 20px;
  background: linear-gradient(180deg, #fff 40%, #9a9aa5 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.brand-tagline p {
  font-size: 17px;
  color: var(--text-dim);
  letter-spacing: 0.04em;
  max-width: 440px;
  line-height: 1.6;
}

.brand-footer {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  padding-top: 28px;
  border-top: 1px solid var(--border);
}
.spec-v {
  font-size: 26px;
  font-weight: 300;
  color: var(--text);
  letter-spacing: 0.02em;
}
.spec-v span {
  font-size: 13px;
  color: var(--text-dim);
  margin-left: 2px;
}
.spec-k {
  font-size: 11px;
  color: var(--text-dim);
  letter-spacing: 0.25em;
  text-transform: uppercase;
  margin-top: 4px;
}

.brand-swoosh {
  position: absolute;
  bottom: -100px;
  right: -100px;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(212,175,55,0.08), transparent 60%);
  pointer-events: none;
}

/* ========== Right login panel ========== */
.login-panel {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px;
  background: var(--bg);
  position: relative;
}
.login-panel-inner {
  width: 100%;
  max-width: 400px;
  position: relative;
}
.login-panel-inner.shake {
  animation: shake 0.4s;
}
@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20%, 60% { transform: translateX(-8px); }
  40%, 80% { transform: translateX(8px); }
}

.login-back {
  display: inline-block;
  font-size: 12px;
  color: var(--text-dim);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 40px;
  transition: color 0.2s;
}
.login-back:hover { color: var(--accent); }

.login-role-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: 100px;
  font-size: 11px;
  color: var(--text-dim);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: 20px;
}
.login-role-badge .dot {
  width: 6px; height: 6px;
  background: var(--accent);
  border-radius: 50%;
  box-shadow: 0 0 0 3px rgba(212,175,55,0.2);
}

.login-panel-inner h2 {
  font-size: 32px;
  font-weight: 400;
  letter-spacing: 0.01em;
  margin-bottom: 8px;
}
.login-sub {
  color: var(--text-dim);
  font-size: 14px;
  margin-bottom: 36px;
  line-height: 1.6;
}

.login-form .form-group { margin-bottom: 18px; }
.login-form .form-group input {
  width: 100%;
  background: var(--bg-2);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 14px 16px;
  border-radius: 8px;
  font-size: 15px;
  font-family: inherit;
  transition: all 0.2s;
}
.login-form .form-group input:focus {
  outline: none;
  border-color: var(--accent);
  background: var(--bg-3);
  box-shadow: 0 0 0 3px rgba(212,175,55,0.12);
}
.login-form .form-group label {
  display: block;
  font-size: 11px;
  color: var(--text-dim);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.login-submit {
  width: 100%;
  padding: 14px 20px;
  font-size: 13px;
  margin-top: 8px;
  border-radius: 8px;
}

.login-error {
  background: rgba(224, 85, 85, 0.1);
  border: 1px solid rgba(224, 85, 85, 0.3);
  color: var(--danger);
  padding: 12px 14px;
  border-radius: 6px;
  font-size: 13px;
  margin-bottom: 16px;
}

.login-hint {
  margin-top: 32px;
  padding: 14px 16px;
  background: var(--bg-2);
  border: 1px dashed var(--border);
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.login-hint:hover { border-color: var(--accent); }
.hint-label {
  font-size: 10px;
  color: var(--text-dim);
  letter-spacing: 0.25em;
  text-transform: uppercase;
}
.login-hint code {
  font-family: "JetBrains Mono", monospace;
  font-size: 14px;
  color: var(--accent);
}
.hint-extra {
  margin-top: 6px;
  font-size: 11px;
  color: var(--text-dim);
  line-height: 1.5;
}

.signup-link {
  text-align: center;
  margin-top: 24px;
  font-size: 13px;
  color: var(--text-dim);
}
.signup-link a {
  color: var(--accent);
  margin-left: 8px;
  text-decoration: none;
  font-weight: 500;
}
.signup-link a:hover { text-decoration: underline; }

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.login-footer {
  position: absolute;
  bottom: -200px;
  left: 0; right: 0;
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  color: var(--text-dim);
  letter-spacing: 0.1em;
}

@media (max-width: 900px) {
  .login-shell { grid-template-columns: 1fr; }
  .login-brand { display: none; }
  .login-footer { position: static; margin-top: 40px; }
  .brand-tagline h1 { font-size: 44px; }
}