.auth-shell {
  min-height: 100vh;
  padding: 40px 6%;
  background: var(--bg);
  display: flex;
  flex-direction: column;
  justify-content: center;
  transition: background-color 0.3s ease;
}

.auth-brand {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 28px;
}

.auth-brand b {
  font-size: 28px;
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-weight: 800;
  letter-spacing: -0.5px;
  color: var(--text-main);
}

.auth-brand span {
  display: block;
  color: var(--primary-blue);
  font-size: 13px;
  font-weight: 700;
}

.auth-card {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  background: var(--surface);
  border-radius: var(--radius-xl);
  border: var(--panel-border);
  box-shadow: var(--shadow-raised-lg);
  overflow: hidden;
  max-width: 1080px;
  margin: 0 auto;
  width: 100%;
  animation: smoothPageEnter 0.35s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.auth-copy {
  padding: 60px 52px;
  background: var(--surface);
  display: flex;
  flex-direction: column;
  justify-content: center;
  border-right: 1px solid var(--line);
}

.auth-copy h1 {
  font-size: 40px;
  line-height: 1.18;
  letter-spacing: -1px;
  margin: 14px 0 18px;
  font-weight: 800;
  color: var(--text-main);
}

.auth-copy h1 span {
  color: var(--primary-blue);
}

.auth-copy p {
  color: var(--text-muted);
  font-size: 15px;
  line-height: 1.65;
  margin: 0 0 32px;
}

.auth-points {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.auth-points span {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 14px;
  font-weight: 700;
  color: var(--text-main);
  background: var(--surface-soft);
  border: 1px solid var(--line);
  padding: 10px 16px;
  border-radius: var(--radius-pill);
  box-shadow: none;
}

.auth-points i {
  color: var(--primary-blue);
  font-size: 17px;
}

.auth-form {
  padding: 52px 44px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  background: var(--surface);
}

/* Clean, Crisp Inset Tab Track */
.tabs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  background: var(--surface-soft);
  border: 1px solid var(--line);
  padding: 5px;
  border-radius: var(--radius-pill);
  box-shadow: none;
  margin-bottom: 24px;
}

.tabs button {
  border: 1px solid transparent;
  background: transparent;
  padding: 10px 14px;
  border-radius: var(--radius-pill);
  font-size: 13.5px;
  font-weight: 700;
  color: var(--text-muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: all 0.2s ease;
}

.tabs button:hover {
  color: var(--primary-blue);
}

/* Active Tab: Crisp Raised Pill */
.tabs button.active {
  background: var(--surface);
  color: var(--primary-blue);
  border-color: var(--line);
  box-shadow: var(--shadow-raised-sm);
  font-weight: 800;
}

.auth-form-structure {
  animation: smoothViewFadeIn 0.28s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.demo-login-box {
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px dashed var(--line);
  text-align: center;
}

.demo-login-box .demo-title {
  display: block;
  font-size: 11px;
  font-weight: 800;
  text-transform: uppercase;
  color: var(--text-muted);
  letter-spacing: 0.5px;
  margin-bottom: 10px;
}

.demo-btn-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
}

.demo-role-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  background: var(--surface-soft);
  border: 1px solid var(--line);
  color: var(--text-main);
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s ease;
}

.demo-role-btn:hover {
  background: var(--primary-blue-light);
  border-color: var(--primary-blue);
  color: var(--primary-blue);
  transform: translateY(-1px);
}

.auth-form-structure .form-header {
  margin-bottom: 22px;
}

.auth-form-structure .form-header h4 {
  font-size: 20px;
  font-weight: 800;
  color: var(--text-main);
  margin: 0 0 6px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.auth-form-structure .form-header p {
  font-size: 13px;
  color: var(--text-muted);
  margin: 0;
}

.form-group {
  margin-bottom: 18px;
}

.form-group label {
  display: block;
  font-size: 12.5px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 7px;
}

.form-group label i {
  color: var(--primary-blue);
  margin-right: 4px;
}

.input-icon-wrap {
  position: relative;
  display: flex;
  align-items: center;
}

.input-icon-wrap input {
  width: 100%;
  padding: 13px 18px 13px 44px;
}

.input-icon-wrap .input-icon {
  position: absolute;
  left: 16px;
  color: var(--text-light);
  font-size: 17px;
  pointer-events: none;
  transition: color 0.2s;
}

.input-icon-wrap:focus-within .input-icon {
  color: var(--primary-blue);
}

.btn-toggle-pwd {
  position: absolute;
  right: 12px;
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 6px;
  display: grid;
  place-items: center;
  font-size: 16px;
}

.btn-toggle-pwd:hover {
  color: var(--primary-blue);
}

.form-submit-btn {
  width: 100%;
  margin-top: 16px;
  padding: 14px;
  font-size: 15px;
}

/* ==========================================================================
   Responsive Auth Page Breakpoints
   ========================================================================== */

@media (max-width: 992px) {
  .auth-card {
    grid-template-columns: 1fr;
    max-width: 580px;
  }
  .auth-copy {
    padding: 40px 36px;
    border-right: none;
    border-bottom: 2px solid var(--surface-soft);
  }
  .auth-copy h1 {
    font-size: 32px;
  }
  .auth-form {
    padding: 36px 32px;
  }
}

@media (max-width: 680px) {
  .auth-copy {
    display: none;
  }
}

@media (max-width: 576px) {
  .auth-shell {
    padding: 20px 14px;
    justify-content: flex-start;
  }

  .auth-card {
    border-radius: var(--radius-lg);
  }

  .auth-form {
    padding: 26px 18px;
  }

  .tabs button {
    font-size: 12.5px;
    padding: 9px;
  }

  .auth-form-structure .form-header h4 {
    font-size: 18px;
  }

  .input-icon-wrap input {
    padding: 11px 14px 11px 38px;
    font-size: 13px;
  }

  .input-icon-wrap .input-icon {
    left: 12px;
    font-size: 15px;
  }

  .form-submit-btn {
    padding: 12px;
    font-size: 14px;
  }
}

@media (max-width: 380px) {
  .auth-shell {
    padding: 16px 10px;
  }

  .auth-form {
    padding: 20px 12px;
  }

  .tabs button {
    font-size: 11.5px;
    padding: 8px 4px;
    gap: 4px;
  }

  .auth-brand {
    gap: 10px;
  }

  .logo-mark {
    width: 38px;
    height: 38px;
    font-size: 18px;
  }

  .auth-brand b {
    font-size: 20px;
  }

  .auth-brand span {
    font-size: 11px;
  }
}