*,
*::before,
*::after {
  box-sizing: border-box;
}

body.auth-page {
  margin: 0;
  font-family: "Segoe UI", Arial, sans-serif;
  background: linear-gradient(135deg, #0f172a, #1657b7 50%, #0ea5a8);
  color: #0f172a;
  min-height: 100vh;
}

.auth-shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
}

.auth-shell-single {
  grid-template-columns: 1fr;
}

.auth-brand {
  padding: 3rem;
  color: #f8fbff;
  display: flex;
  align-items: center;
}

.auth-brand img {
  max-width: 160px;
  margin-bottom: 1.5rem;
}

.auth-brand h1 {
  font-size: 2.4rem;
  line-height: 1.1;
  margin: 0 0 1rem;
}

.auth-brand p {
  max-width: 520px;
  font-size: 1.02rem;
  color: rgba(248, 251, 255, 0.82);
}

.auth-panel {
  background: rgba(255, 255, 255, 0.98);
  padding: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.auth-panel-full {
  grid-column: 1 / -1;
}

.auth-card {
  width: 100%;
  max-width: 560px;
  background: #fff;
  border-radius: 24px;
  border: 1px solid #d8e1ec;
  box-shadow: 0 20px 50px rgba(15, 23, 42, 0.12);
  padding: 2rem;
}

.auth-card-admin {
  max-width: 520px;
}

.auth-top-actions {
  display: flex;
  justify-content: flex-start;
  margin-bottom: 1rem;
}

.auth-back-link {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 0.65rem 0.9rem;
  border-radius: 999px;
  border: 1px solid #d8e1ec;
  background: #f8fbff;
  color: #1657b7;
  text-decoration: none;
  font-weight: 700;
  font-size: 0.92rem;
}

.auth-back-link:hover {
  background: #eef4ff;
}

.auth-login-intro {
  margin-bottom: 1.2rem;
}

.auth-login-intro h2 {
  margin: 0 0 0.4rem;
  font-size: 1.7rem;
  line-height: 1.15;
}

.auth-login-intro p {
  margin: 0;
  color: #5d6b7d;
}

.auth-tabs {
  display: flex;
  gap: 0.6rem;
  margin-bottom: 1.2rem;
}

.auth-tab {
  border: 1px solid #d8e1ec;
  background: #eef3f8;
  border-radius: 999px;
  padding: 0.75rem 1rem;
  cursor: pointer;
  font: inherit;
  font-weight: 700;
}

.auth-tab.active {
  background: linear-gradient(135deg, #1657b7, #0ea5a8);
  color: #fff;
  border-color: transparent;
}

.auth-form {
  display: none;
}

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

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

.form-actions-between {
  align-items: center;
  justify-content: space-between;
}

.auth-link {
  color: #1657b7;
  font-weight: 700;
  text-decoration: none;
}

.auth-link:hover {
  text-decoration: underline;
}

.auth-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.8rem;
}

.auth-card .form-group {
  margin-bottom: 1rem;
}

.auth-card .form-label {
  display: block;
  margin-bottom: 0.35rem;
  font-size: 0.86rem;
  font-weight: 700;
}

.auth-card .form-input {
  width: 100%;
  min-height: 48px;
  padding: 0.85rem 0.95rem;
  border-radius: 14px;
  border: 1px solid #d8e1ec;
  font: inherit;
  line-height: 1.2;
  background: #fff;
  color: #0f172a;
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
  appearance: none;
  display: block;
}

.auth-card .form-input:focus {
  border-color: #1657b7;
  box-shadow: 0 0 0 4px rgba(22, 87, 183, 0.12);
}

.auth-card .form-actions {
  display: flex;
  gap: 0.8rem;
  flex-wrap: wrap;
}

.btn-primary {
  min-height: 48px;
  padding: 0.8rem 1.2rem;
  border: 0;
  border-radius: 14px;
  background: linear-gradient(135deg, #1657b7, #0ea5a8);
  color: #fff;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}

.btn-block {
  width: 100%;
  justify-content: center;
}

.auth-alert {
  margin-bottom: 1rem;
  padding: 0.9rem 1rem;
  border-radius: 14px;
  border: 1px solid transparent;
}

.auth-alert-error {
  background: #fef2f2;
  color: #991b1b;
}

.auth-alert-success {
  background: #ecfdf3;
  color: #166534;
}

.auth-brand-admin {
  background: linear-gradient(135deg, #0f172a, #163d77 50%, #0b7d7a);
}

.auth-modal {
  position: fixed;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  z-index: 50;
}

.auth-modal.is-open {
  display: flex;
}

.auth-modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(15, 23, 42, 0.55);
}

.auth-modal-box {
  position: relative;
  width: min(100%, 460px);
  background: #fff;
  border-radius: 24px;
  padding: 1.5rem;
  box-shadow: 0 25px 60px rgba(15, 23, 42, 0.22);
}

.auth-modal-box h2 {
  margin: 0 0 0.75rem;
}

.auth-modal-box p {
  margin: 0;
  color: #4b5563;
  line-height: 1.6;
}

.auth-modal-close {
  position: absolute;
  top: 0.8rem;
  right: 0.8rem;
  width: 40px;
  height: 40px;
  border: 0;
  border-radius: 999px;
  background: #eef3f8;
  font-size: 1.4rem;
  cursor: pointer;
}

@media (max-width: 991px) {
  .auth-shell {
    grid-template-columns: 1fr;
  }

  .auth-brand {
    padding: 2rem 2rem 0;
  }
}

@media (min-width: 578px) and (max-width: 767px) {
  .auth-panel {
    padding: 1.15rem;
  }

  .auth-card {
    padding: 1.35rem;
  }

  .auth-row {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 577px) {
  .auth-panel {
    padding: 1rem;
  }

  .auth-card {
    padding: 1.2rem;
  }

  .auth-row {
    grid-template-columns: 1fr;
  }
}