:root {
  --emerald-dark: #0D5C3F;
  --emerald: #127151;
  --emerald-light: #1A8A67;
  --gold: #D4AF37;
  --gold-light: #FFD700;
  --gold-dark: #C5A80C;
  --cream: #FFF8E7;
  --brown-dark: #4A2C0F;
  --brown-medium: #6A4521;
  --brown-light: #8B6D47;
  --red-accent: #8B2E2E;
  --text-dark: #2B2B2B;
}

body {
  background-color: #f9f7f0;
  background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 100 100' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M11 18c3.866 0 7-3.134 7-7s-3.134-7-7-7-7 3.134-7 7 3.134 7 7 7zm48 25c3.866 0 7-3.134 7-7s-3.134-7-7-7-7 3.134-7 7 3.134 7 7 7zm-43-7c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zm63 31c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zM34 90c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zm56-76c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zM12 86c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm28-65c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm23-11c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm-6 60c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm29 22c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zM32 63c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm57-13c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm-9-21c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM60 91c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM35 41c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM12 60c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2z' fill='%23d4af37' fill-opacity='0.05' fill-rule='evenodd'/%3E%3C/svg%3E");
  font-family: 'Georgia', serif;
  color: var(--text-dark);
}

.login-container {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  padding: 2rem;
}

.login-card {
  width: 100%;
  max-width: 450px;
  border-radius: 0.5rem;
  overflow: hidden;
  background-color: var(--cream);
  box-shadow: 
    0 1px 3px rgba(0,0,0,0.1),
    0 8px 20px rgba(0,0,0,0.1),
    0 12px 40px rgba(0,0,0,0.1),
    inset 0 0 0 1px rgba(255,255,255,0.2);
  border: 1px solid rgba(74, 44, 15, 0.2);
  position: relative;
}

.login-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 5px;
  background: linear-gradient(90deg, var(--gold-dark), var(--gold), var(--gold-light));
}

.login-header {
  padding: 2.5rem 2rem 2rem;
  text-align: center;
  background-color: var(--emerald);
  background-image: url("data:image/svg+xml,%3Csvg width='100' height='100' viewBox='0 0 100 100' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M11 18c3.866 0 7-3.134 7-7s-3.134-7-7-7-7 3.134-7 7 3.134 7 7 7zm48 25c3.866 0 7-3.134 7-7s-3.134-7-7-7-7 3.134-7 7 3.134 7 7 7zm-43-7c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zm63 31c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zM34 90c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zm56-76c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zM12 86c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm28-65c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm23-11c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm-6 60c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm29 22c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zM32 63c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm57-13c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm-9-21c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM60 91c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM35 41c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM12 60c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2z' fill='%230a3e2a' fill-opacity='0.1' fill-rule='evenodd'/%3E%3C/svg%3E");
  position: relative;
}

.login-title {
  font-family: 'Georgia', serif;
  font-weight: 700;
  color: var(--cream);
  font-size: 2rem;
}

.login-subtitle {
  color: rgba(255, 248, 231, 0.8);
  font-size: 1rem;
}

.login-body {
  padding: 2rem;
  background-color: var(--cream);
  border-top: 1px solid rgba(74, 44, 15, 0.1);
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-label {
  font-weight: 600;
  color: var(--brown-dark);
  margin-bottom: 0.5rem;
  display: block;
}

.input-group-text {
  background-color: var(--emerald);
  color: white;
  border: none;
  border-top-left-radius: 0.25rem;
  border-bottom-left-radius: 0.25rem;
}

.form-control {
  border: 1px solid rgba(74, 44, 15, 0.2);
  padding: 0.75rem 1rem;
  color: var(--brown-dark);
  background-color: white;
}

.form-control:focus {
  border-color: var(--gold-dark);
  box-shadow: 0 0 0 0.25rem rgba(212, 175, 55, 0.25);
}

.form-check-input:checked {
  background-color: var(--emerald);
  border-color: var(--emerald);
}

.btn-login {
  background: linear-gradient(to right, var(--emerald-dark), var(--emerald));
  color: white;
  border: none;
  padding: 0.75rem 1.5rem;
  font-weight: 600;
  transition: all 0.2s ease;
  border-radius: 0.35rem;
}

.btn-login:hover {
  background: linear-gradient(to right, var(--emerald), var(--emerald-light));
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(26, 138, 103, 0.3);
  color: white;
}

.divider {
  margin: 1.5rem 0;
  position: relative;
  height: 1.5px;
  background-color: rgba(74, 44, 15, 0.1);
}

.divider-text {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  padding: 0 1rem;
  background-color: var(--cream);
  font-size: 0.875rem;
}

a {
  color: var(--emerald);
  text-decoration: none;
  transition: all 0.2s ease;
}

a:hover {
  color: var(--emerald-dark);
  text-decoration: underline;
}

.auth-watermark {
  position: absolute;
  right: 2rem;
  bottom: 1.5rem;
  opacity: 0.1;
  font-size: 4rem;
}

.auth-book-icon {
  display: block;
  margin: 0 auto 1rem;
  font-size: 2.5rem;
  color: var(--gold);
  text-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.auth-library-stamp {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  font-family: 'Courier New', monospace;
  color: rgba(255, 248, 231, 0.3);
  font-size: 0.75rem;
  transform: rotate(10deg);
}

.auth-decoration {
  position: relative;
}

.auth-decoration::before,
.auth-decoration::after {
  content: "✦";
  display: inline-block;
  color: var(--gold);
  margin: 0 0.5rem;
}

/* User Management Styles */
.text-brown-dark {
  color: var(--brown-dark);
}

.text-brown-medium {
  color: var(--brown-medium);
}

.text-emerald {
  color: var(--emerald);
}

.bg-emerald {
  background-color: var(--emerald);
}

.library-card {
  border-radius: 0.75rem;
  overflow: hidden;
  transition: all 0.3s ease;
}

.library-card:hover {
  box-shadow: 0 8px 16px rgba(0,0,0,0.1) !important;
}

.library-table th {
  font-weight: 600;
  color: var(--brown-dark);
}

.library-table-row {
  transition: all 0.2s ease;
}

.library-table-row:hover {
  transform: translateY(-1px);
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.statistics-card {
  transition: transform 0.2s ease;
}

.statistics-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 16px rgba(0,0,0,0.08) !important;
}

code {
  background-color: #f8f9fa;
  padding: 0.25rem 0.5rem;
  border-radius: 0.25rem;
  font-size: 0.8rem;
  color: var(--brown-dark);
}

.page-title h2 {
  margin-bottom: 0;
}

.btn-outline-library {
  color: var(--emerald);
  border: 1px solid var(--emerald);
  font-weight: 500;
  transition: all 0.3s ease;
}

.btn-outline-library:hover {
  background-color: var(--emerald);
  color: white;
  box-shadow: 0 4px 8px rgba(26, 138, 103, 0.2);
  border-color: var(--emerald);
}

.btn-group .btn {
  border: 1px solid #dee2e6;
}

.btn-group .btn:hover {
  z-index: 2;
}

.user-avatar {
  flex-shrink: 0;
}

/* Additional User Management Styles for Edit/Add */
.bg-gold {
  background-color: var(--gold);
}

.text-success {
  color: #198754;
}

.user-avatar-preview {
  width: 80px; 
  height: 80px;
}

/* Form Validation Styles */
.form-control.is-valid {
  border-color: var(--emerald);
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 8 8'%3e%3cpath fill='%23127151' d='M2.3 6.73L.6 4.53c-.4-1.04.46-1.4 1.1-.8l1.1 1.4 3.4-3.8c.6-.63 1.6-.27 1.2.7l-4 4.6c-.43.5-.8.4-1.1.1z'/%3e%3c/svg%3e");
}

.form-control.is-valid:focus {
  border-color: var(--emerald);
  box-shadow: 0 0 0 0.25rem rgba(18, 113, 81, 0.25);
}

.form-control.is-invalid {
  border-color: var(--red-accent);
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12' width='12' height='12' fill='none' stroke='%238B2E2E'%3e%3ccircle cx='6' cy='6' r='4.5'/%3e%3cpath stroke-linejoin='round' d='M5.8 3.6h.4L6 6.5z'/%3e%3ccircle cx='6' cy='8.2' r='.6' fill='%238B2E2E' stroke='none'/%3e%3c/svg%3e");
}

.form-control.is-invalid:focus {
  border-color: var(--red-accent);
  box-shadow: 0 0 0 0.25rem rgba(139, 46, 46, 0.25);
}

/* Password Management Styles */
.card.border-danger {
  border-color: var(--red-accent) !important;
  border-radius: 0.75rem;
  overflow: hidden;
}

/* User Preview/Edit Card Styles */
.current-user-preview .card {
  border-radius: 0.5rem;
}

.user-preview {
  transition: transform 0.3s ease;
}

.user-preview:hover {
  transform: translateY(-2px);
}

/* Form Control Styling */
.input-group-text {
  background-color: var(--emerald);
  color: white;
  border: none;
}

/* Admin Toggle Switch Styling */
.form-check-input:checked {
  background-color: var(--emerald);
  border-color: var(--emerald);
}

.form-check-label {
  cursor: pointer;
}

/* Card Border Styling */
.card.border-1 {
  border: 1px solid rgba(0, 0, 0, 0.125) !important;
  border-radius: 0.5rem;
}

/* Book Add Page Styles */
.book-cover {
  transition: transform 0.3s ease;
  max-width: 100%;
  height: auto;
}

.book-cover:hover {
  transform: scale(1.02);
}

.carousel-indicators button {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.carousel-inner {
  border-radius: 0.5rem;
  overflow: hidden;
}

.carousel-item img {
  width: 100%;
  max-height: 400px;
  object-fit: cover;
}

.library-info-item {
  padding: 0.75rem;
  background-color: #f8f9fa;
  border-radius: 0.5rem;
  border-left: 3px solid var(--emerald);
  transition: all 0.2s ease;
}

.library-info-item:hover {
  border-left-color: var(--gold);
  background-color: rgba(255, 248, 231, 0.5);
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0,0,0,0.05);
}

.description-content {
  max-height: 150px;
  overflow-y: auto;
  border-radius: 0.5rem;
  background-color: var(--cream);
  border: 1px solid rgba(74, 44, 15, 0.1);
}

.subjects-list {
  max-height: 200px;
  overflow-y: auto;
}

code {
  background-color: #f8f9fa;
  padding: 0.25rem 0.5rem;
  border-radius: 0.25rem;
  font-size: 0.8rem;
  color: var(--brown-dark);
}

/* Form styling */
.form-control:focus {
  border-color: var(--gold);
  box-shadow: 0 0 0 0.25rem rgba(212, 175, 55, 0.25);
}

.form-control.is-valid {
  border-color: var(--emerald);
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 8 8'%3e%3cpath fill='%23127151' d='M2.3 6.73L.6 4.53c-.4-1.04.46-1.4 1.1-.8l1.1 1.4 3.4-3.8c.6-.63 1.6-.27 1.2.7l-4 4.6c-.43.5-.8.4-1.1.1z'/%3e%3c/svg%3e");
}

.form-control.is-invalid {
  border-color: var(--red-accent);
}

/* Custom input group styling */
.input-group-text {
  background-color: var(--cream);
  border-right: none;
  color: var(--brown-medium);
}

.input-group .form-control {
  border-left: none;
  background-color: var(--cream);
}

.input-group:focus-within .input-group-text {
  border-color: var(--gold);
  color: var(--brown-dark);
}

/* Tag Element Styling */
.tag-element {
  padding: 0.2rem 0.5rem;
  font-size: 10px;
  font-weight: 600;
  color: var(--brown-dark);
  background-color: var(--cream);
  border: 1px solid rgba(74, 44, 15, 0.2);
  border-radius: 0.5rem;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
  transition: all 0.3s ease;
  justify-items: center;
}

.tag-element:hover {
  background-color: var(--gold-light);
  color: var(--brown-medium);
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

@media (max-width: 576px) {
  .user-avatar {
    width: 50px;
    height: 50px;
  }

  .library-card {
    padding: 1rem;
  }

  .statistics-card {
    margin-bottom: 1rem;
  }

  .btn-group .btn {
    font-size: 0.85rem;
    padding: 0.5rem 1rem;
  }

  .library-table th, .library-table td {
    font-size: 0.85rem;
    padding: 0.5rem;
  }

  .page-title h2 {
    font-size: 1.5rem;
  }

  .page-title p {
    font-size: 0.9rem;
  }

  .navbar-brand span {
    font-size: 1rem;
  }

  .navbar-toggler {
    width: 40px;
    height: 30px;
  }

  .library-btn-login, .library-btn-register, .library-btn-logout {
    font-size: 0.85rem;
    padding: 0.5rem 1rem;
  }
}