.auth-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg);
  padding: 20px;
}

.auth-container {
  display: flex;
  max-width: 800px;
  width: 100%;
  background: var(--surface);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.auth-brand {
  flex: 1;
  padding: 48px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  background: linear-gradient(135deg, #0d0d0d 0%, #111 100%);
  border-right: 1px solid var(--border);
}

.auth-brand h1 {
  font-family: var(--font-mono);
  font-size: 28px;
  color: #fff;
  margin-bottom: 12px;
}

.auth-brand p {
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.6;
}

.auth-form-wrapper {
  flex: 1;
  padding: 48px;
}

.auth-tabs {
  display: flex;
  gap: 0;
  margin-bottom: 32px;
  border-bottom: 1px solid var(--border);
}

.auth-tab {
  flex: 1;
  padding: 12px;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--text-dim);
  background: none;
  border: none;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: all 0.2s;
}

.auth-tab.active {
  color: var(--green);
  border-bottom-color: var(--green);
}

.auth-form {
  display: none;
}

.auth-form.active {
  display: block;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 12px;
  color: var(--text-dim);
  margin-bottom: 6px;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.form-group input {
  width: 100%;
  padding: 12px 14px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  font-size: 14px;
  font-family: var(--font-sans);
  transition: border-color 0.2s;
}

.form-group input:focus {
  outline: none;
  border-color: var(--green);
}

.form-error {
  color: #ff5f57;
  font-size: 12px;
  margin-top: 6px;
  display: none;
}

.form-error.visible {
  display: block;
}

.auth-submit {
  width: 100%;
  padding: 12px;
  background: var(--green);
  color: #000;
  border: none;
  border-radius: 6px;
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.2s;
}

.auth-submit:hover {
  opacity: 0.85;
}

.auth-submit:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.auth-divider {
  display: flex;
  align-items: center;
  gap: 16px;
  margin: 24px 0;
  color: var(--text-dim);
  font-size: 12px;
}

.auth-divider::before,
.auth-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}

.oauth-buttons {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.btn-oauth {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  width: 100%;
  padding: 12px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  font-size: 13px;
  font-family: var(--font-sans);
  cursor: pointer;
  transition: all 0.2s;
}

.btn-oauth:hover {
  border-color: var(--text-secondary);
  color: #fff;
}

.btn-oauth svg {
  width: 18px;
  height: 18px;
}

@media (max-width: 768px) {
  .auth-container {
    flex-direction: column;
  }

  .auth-brand {
    padding: 32px;
    border-right: none;
    border-bottom: 1px solid var(--border);
  }

  .auth-form-wrapper {
    padding: 32px;
  }
}