.card-img-top {
  height: 160px;
  object-fit: cover;
  object-position: center;
  width: 100%;
}

.card {
  background-color: #1e1e2d;
  color: #e0ffe2;
  border: none;
  border-radius: 12px;
  overflow: hidden;
  transition:
    transform 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94),
    box-shadow 0.3s ease,
    background-color 0.3s,
    color 0.3s;
}

.card:hover {
  transform: translateY(-6px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.35) !important;
}

.card .btn {
  transition: all 0.2s ease;
}

.card .btn:hover {
  transform: scale(1.02);
}

body.light-mode {
  background-color: #e9e3e3;
  color: #49495c;
}

body {
  background-color: #12121d;
  color: #e0e0ff;
  transition: background-color 0.3s, color 0.3s;
}

/* کارت‌ها در حالت لایت */
body.light-mode .card {
  background-color: #f6ecec;
  color: #212529;
  border: 1px solid #e0e0e0;
}

body.light-mode #quiz-tab-content p,
body.light-mode #quiz-tab-content h5 {
  color: #212529 !important;
}

body.light-mode #quiz-tab-content .btn-outline-light {
  color: #212529 !important;
  border-color: #ced4da !important;
}

/* متن‌های  کارت در حالت لایت */
body.light-mode .card .card-title,
body.light-mode .card .card-text,
body.light-mode .card .text-muted {
  color: #212529 !important;
}

/*  در حالت لایت */
body.light-mode .badge.bg-success {
  background-color: #4ade80 !important;
  color: #000 !important;
}

body.light-mode .badge.bg-warning {
  background-color: #facc15 !important;
  color: #000 !important;
}

body.light-mode .badge.bg-danger {
  background-color: #f87171 !important;
  color: #000 !important;
}

body.light-mode .btn-outline-light {
  color: #535151;
  border-color: #0b4075;
}

body.light-mode .btn-outline-light:hover {
  background-color: #e9ecef;
  color: #212529;
}

body.light-mode .navbar {
  background-color: #d3d0d0 !important;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.08);
}

body.light-mode .navbar-brand,
body.light-mode .nav-link {
  color: #212529 !important;
}

body.light-mode .form-control {
  background-color: #e9e3e3;
  color: #212529;
  border-color: #084481;
}

body.light-mode #library-empty h4 {
  color: #212529;
}

body.light-mode #library-empty h4 {
  color: #212529;
}

@media (max-width: 767.98px) {

  #library-grid .col-md-6,
  #library-grid .col-lg-4 {
    flex: 0 0 100% !important;
    max-width: 100% !important;
  }

  .card .mt-auto .d-flex {
    flex-direction: column !important;
    gap: 0.5rem !important;
  }

  .card .btn {
    width: 100% !important;
    justify-content: center !important;
  }

  .hero-section {
    padding-top: 1.5rem !important;
    padding-bottom: 1.5rem !important;
  }

  .hero-section .display-5 {
    font-size: 1.8rem !important;
  }

  .hero-buttons .btn {
    padding: 0.4rem 0.8rem !important;
    font-size: 0.9rem !important;
  }

  .container {
    padding-left: 1rem !important;
    padding-right: 1rem !important;
  }

  .card-body {
    padding: 1rem !important;
  }

  .card-title {
    font-size: 1.1rem !important;
  }

  .badge {
    font-size: 0.75rem !important;
    padding: 0.3em 0.5em !important;
  }
}

#author-forms .form-label {
  font-weight: 600;
  margin-top: 1rem;
}

#author-forms .form-control,
#author-forms .form-select {
  margin-bottom: 0.75rem;
}

/* فلش‌کارت‌ها */
.flashcard-row {
  background-color: rgba(20, 18, 18, 0.05);
  padding: 0.75rem;
  border-radius: 8px;
  margin-bottom: 0.75rem;
}

.flashcard-row .form-control {
  margin-bottom: 0.5rem;
}

.flashcard-row .col-md-2 {
  display: flex;
  align-items: flex-end;
  margin-bottom: 0.5rem;
}

/* کوئیز */
.quiz-row {
  background-color: rgba(209, 207, 207, 0.05);
  border-radius: 8px;
  padding: 1rem;
  margin-bottom: 1rem;
}

.quiz-row .card-body {
  padding: 0;
}

.quiz-row .form-control {
  margin-bottom: 0.5rem;
}

.quiz-row .row {
  margin-bottom: 0.75rem;
}

.quiz-row .col-md-6 {
  padding-left: 4px;
  padding-right: 4px;
}

/* دکمه‌های Add/Remove */
#author-forms .btn-sm {
  font-size: 0.85rem;
  padding: 0.25rem 0.5rem;
}

@media (max-width: 767.98px) {

  .flashcard-row .col-md-5,
  .flashcard-row .col-md-2 {
    flex: 0 0 100% !important;
    max-width: 100% !important;
  }

  .quiz-row .col-md-6 {
    flex: 0 0 100% !important;
    max-width: 100% !important;
    margin-bottom: 0.5rem;
  }

  .quiz-row .mb-2 {
    margin-bottom: 0.75rem !important;
  }
}

@media (max-width: 991.98px) {
  .navbar {
    padding: 0.5rem 1rem !important;
  }

  #app-logo img {
    margin-right: 0;
  }
}

body.light-mode #author-forms *,
body.light-mode #learn-content * {
  color: #050506 !important;
}

body.light-mode #author-forms .form-control,
body.light-mode #learn-content .form-control {
  background-color: #faf9f9 !important;
  border-color: #030303 !important;
}

body.light-mode #author-forms textarea.form-control {
  color: #e9ecf0 !important;
}

/*  Hero Section Animation  */
.hero-section {
  opacity: 0;
  transform: translateY(20px);
  animation: fadeInUpHero 0.8s ease forwards;
}

@keyframes fadeInUpHero {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/*  Card Staggered Animation  */
#library-grid .col-md-6 {
  opacity: 0;
  transform: translateY(30px);
}

#library-grid .col-md-6.visible {
  animation: fadeInUpCard 0.6s ease forwards;
}

#library-grid .col-md-6:nth-child(1).visible {
  animation-delay: 0.1s;
}

#library-grid .col-md-6:nth-child(2).visible {
  animation-delay: 0.2s;
}

#library-grid .col-md-6:nth-child(3).visible {
  animation-delay: 0.3s;
}

#library-grid .col-md-6:nth-child(4).visible {
  animation-delay: 0.4s;
}

#library-grid .col-md-6:nth-child(5).visible {
  animation-delay: 0.5s;
}

#library-grid .col-md-6:nth-child(6).visible {
  animation-delay: 0.6s;
}

@keyframes fadeInUpCard {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

body:not(.light-mode) #author-forms .flashcard-row,
body:not(.light-mode) #author-forms .quiz-row {
  background-color: #1e1e2d !important;
  border: 3px solid #3a3a4d !important;
  color: #fdfdff !important;
}

body:not(.light-mode) #author-forms .flashcard-row .form-control,
body:not(.light-mode) #author-forms .quiz-row .form-control {
  background-color: #52525a !important;
  color: #fcfcff !important;
  border-color: #373755 !important;
}

body:not(.light-mode) #author-forms .form-label {
  color: #ffffff !important;
}

body {
  background-color: #12121d;
  color: #e0e0ff;
  transition: background-color 0.3s, color 0.3s;
}

body.light-mode {
  background-color: #f8f9fa;
  color: #212529;
}