:root {
  --primary-gradient: linear-gradient(160deg, #0F4DA8, #0A2A66);
  --primary-color: #0F4DA8;
  --primary-dark: #0A2A66;
  --accent-color: #4DA3FF;
  --border-color: #d6e4ff;
  --bg-light: #f5f9ff;
  --text-dark: #0A2A66;
  --text-muted: #6b7a99;
  --white: #ffffff;
}


/* ================= FORM ================= */

#custom-filter-form,
#redirect-filter-form {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 15px;
  padding: 22px;
  background: var(--primary-gradient);
  border-radius: 14px;
  box-shadow: 0 8px 25px rgba(10, 42, 102, 0.15);
  margin-bottom: 30px;
  overflow: hidden;
}

/* منع overflow */
#custom-filter-form *,
#redirect-filter-form * {
  min-width: 0;
}

/* ================= توزيع العناصر (المهم) ================= */

/* السطر الأول */
#redirect-filter-form .input-group:has(#search),
#custom-filter-form .input-group:has(#search) {
  grid-column: span 8;
}

#redirect-filter-form .input-group:has(#course-code-filter),
#custom-filter-form .input-group:has(#course-code-filter) {
  grid-column: span 4;
}

/* السطر الثاني */
#redirect-filter-form .input-group:has(#category-filter),
#redirect-filter-form .input-group:has(#city-filter),
#redirect-filter-form .input-group:has(#month-filter),
#redirect-filter-form .input-group:has(#course-type-filter),

#custom-filter-form .input-group:has(#category-filter),
#custom-filter-form .input-group:has(#city-filter),
#custom-filter-form .input-group:has(#month-filter),
#custom-filter-form .input-group:has(#course-type-filter) {
  grid-column: span 2;
}

/* الزر */
#custom-filter-form button,
#redirect-filter-form button {
  grid-column: span 4;
}

/* ================= INPUTS ================= */

.input-group {
  position: relative;
  display: flex;
  align-items: center;
  width: 100%;
}

.input-group input,
.input-group select {
  width: 100%;
  min-height: 44px;
  padding: 10px 14px;
  padding-left: 36px !important;
  border: 1px solid var(--border-color);
  border-radius: 10px;
  font-size: 15px;
  background-color: var(--white);
  box-sizing: border-box;
  transition: all 0.25s ease;
}

/* focus */
.input-group input:focus,
.input-group select:focus {
  border-color: var(--accent-color);
  box-shadow: 0 0 0 3px rgba(77, 163, 255, 0.25);
  outline: none;
}

/* ================= ICON ================= */

.input-group i {
  position: absolute;
  left: 12px;
  font-size: 14px;
  color: var(--accent-color);
  pointer-events: none;
}

/* select arrow */
.input-group:has(select)::after {
  content: "\f078";
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  position: absolute;
  right: 12px;
  font-size: 12px;
  color: var(--text-muted);
  pointer-events: none;
}

.input-group select {
  appearance: none;
  cursor: pointer;
}

/* ================= BUTTON ================= */

#custom-filter-form button,
#redirect-filter-form button {
  padding: 10px 22px;
  background: var(--accent-color);
  color: var(--white);
  border: none;
  border-radius: 10px;
  font-size: 15px;
  cursor: pointer;
  transition: all 0.25s ease;
  width: 100%;
}

#custom-filter-form button:hover,
#redirect-filter-form button:hover {
  background: #2f8cff;
  transform: translateY(-1px);
}

#custom-filter-form button i,
#redirect-filter-form button i {
  margin-right: 6px;
}

/* ================= TABLET ================= */

@media (max-width: 992px) {

  #redirect-filter-form .input-group:has(#search),
  #redirect-filter-form .input-group:has(#course-code-filter),
  #custom-filter-form .input-group:has(#search),
  #custom-filter-form .input-group:has(#course-code-filter) {
    grid-column: span 6;
  }

  #redirect-filter-form .input-group:has(select),
  #custom-filter-form .input-group:has(select) {
    grid-column: span 6 !important;
  }

  #custom-filter-form button,
  #redirect-filter-form button {
    grid-column: span 12;
  }
}

/* ================= MOBILE ================= */

@media (max-width: 576px) {
  #custom-filter-form,
  #redirect-filter-form {
    grid-template-columns: 1fr;
  }
  #redirect-filter-form .input-group:has(select),
  #custom-filter-form .input-group:has(select) {
    grid-column: span 12 !important;
  }
  #custom-filter-form *,
  #redirect-filter-form * {
    grid-column: span 12 !important;
  }
}
/* ================= RESULTS ================= */

#custom-filter-results {
  margin-bottom: 30px;
}

/* messages */
#loading-spinner,
#no-results-message {
  text-align: center;
  font-size: 16px;
  color: var(--text-muted);
  margin: 20px 0;
}
/* ================= NO RESULTS ================= */

#no-results-message {
  display: none;
  text-align: center;
  padding: 35px 20px;
  margin: 20px 0;
  border-radius: 14px;
  background: linear-gradient(145deg, #ffffff, #f5f9ff);
  border: 1px dashed var(--border-color);
  color: var(--text-muted);
  font-size: 16px;
  font-weight: 500;
  box-shadow: 0 6px 18px rgba(10, 42, 102, 0.05);
  animation: fadeIn 0.3s ease;
  position: relative;
}

/* أيقونة */
#no-results-message::before {
  content: "\f119";
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  display: block;
  font-size: 28px;
  margin-bottom: 10px;
  color: var(--accent-color);
  opacity: 0.8;
}
.no-results-message {
  text-align: center;
  padding: 35px 20px;
  margin: 20px 0;
  border-radius: 14px;
  background: linear-gradient(145deg, #ffffff, #f5f9ff);
  border: 1px dashed var(--border-color);
  color: var(--text-muted);
  font-size: 16px;
  font-weight: 500;
  box-shadow: 0 6px 18px rgba(10, 42, 102, 0.05);
  animation: fadeIn 0.3s ease;
  position: relative;
}


.no-results-message::before {
  content: "\f119";
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  display: block;
  font-size: 28px;
  margin-bottom: 10px;
  color: var(--accent-color);
  opacity: 0.8;
}
/* ================= LOADING ================= */

#loading-spinner {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(10, 42, 102, 0.85);
  color: var(--white);
  font-size: 1.5rem;
  font-weight: 600;
  text-align: center;
  justify-content: center;
  align-items: center;
  z-index: 9999;
  flex-direction: column;
  backdrop-filter: blur(6px);
}

#loading-spinner::before {
  content: "";
  width: 42px;
  height: 42px;
  border: 4px solid rgba(255, 255, 255, 0.25);
  border-top-color: var(--white);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin-bottom: 15px;
}
/* ================= RESULTS CONTAINER ================= */

#custom-filter-results {
  position: relative;
}



/* ================= LOAD MORE ================= */

.btn-load-more {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 180px;
    padding: 14px 28px;
    background: linear-gradient(135deg, #0F4DA8, #0A2A66);
    color: #ffffff;
    font-size: 1rem;
    font-weight: 600;
    font-family: inherit;
    border: none;
    border-radius: 50px; 
    cursor: pointer;
    overflow: hidden;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(15, 77, 168, 0.2);width: 100%; 
}

.btn-load-more:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(15, 77, 168, 0.35);
    background: linear-gradient(135deg, #125bdc, #0d3888);
}

.btn-load-more:active {
    transform: translateY(1px);
    box-shadow: 0 2px 10px rgba(15, 77, 168, 0.2);
}

.btn-load-more .btn-loader {
    display: none;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: #ffffff;
    animation: spin 1s ease-in-out infinite;
    position: absolute;
}

.btn-load-more.is-loading {
    cursor: not-allowed;
    opacity: 0.8;
    transform: translateY(0);
}

.btn-load-more.is-loading .btn-text {
    opacity: 0;
    visibility: hidden;
}


.btn-load-more.is-loading .btn-loader {
    display: block;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* ================= ANIMATION ================= */

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}


/* ================= CARD MODERN UI ================= */

.filter-post-item {
  background-color: var(--white);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(10, 42, 102, 0.05);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  display: flex;
  flex-direction: column;
  height: 100%;
  width: 100%; 
  margin:10px;
}

.filter-post-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(10, 42, 102, 0.12);
  border-color: var(--accent-color);
}


.course-header {
  padding: 12px;
  border-bottom: 1px solid var(--bg-light);
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
  flex-wrap: wrap;
}

.course-header a {
  text-decoration: none;
  flex: 1;
}

.course-title {
  color: var(--primary-dark);
  font-size: 1.25rem;
  font-weight: 700;
  margin: 0;
  line-height: 1.5;
  transition: color 0.3s ease;
}

.course-header a:hover .course-title {
  color: var(--primary-color);
}

.course-code {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background-color: var(--bg-light);
  color: var(--primary-color);
  padding: 6px 12px;
  border-radius: 8px;
  font-size: 0.85rem;
  font-weight: 600;
  margin: 0;
  white-space: nowrap;
  flex-shrink: 0;
}

.course-code i {
  font-size: 0.8rem;
  color: var(--accent-color);
}

.course-meta {
  padding: 10px 12px;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  gap: 16px;
  background-color: var(--white);
}

.main-details-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.course-meta-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  color: var(--text-dark);
  background-color: var(--bg-light);
  border: 1px solid var(--border-color);
  padding: 8px 14px;
  border-radius: 10px;
  transition: background-color 0.3s ease;
}

.course-meta-item:hover {
  background-color: var(--white);
}

.course-meta-item i {
  color: var(--primary-color);
  font-size: 1.1rem;
}

.course-meta-item span {
  font-weight: 500;
}

.course-footer {
  padding: 10px 12px;
  background-color: var(--white);
  border-top: 1px solid var(--bg-light);
  margin-top: auto;
}

.visit-course-button {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background: var(--primary-gradient);
  color: var(--white);
  padding: 7px 12px;
  border-radius: 10px;
  text-decoration: none;
  font-weight: 700;
  font-size: 1rem;
  transition: all 0.3s ease;
  width: 100%; 
  box-sizing: border-box;
}

.visit-course-button:hover {
  box-shadow: 0 6px 15px rgba(15, 77, 168, 0.3);
  transform: translateY(-2px);
  color: var(--white);
}

/* حركة السهم */
.visit-course-button i {
  font-size: 1.1rem;
  transition: transform 0.3s ease;
}

html[dir="rtl"] .visit-course-button:hover i {
  transform: translateX(-5px);
}
html[dir="ltr"] .visit-course-button:hover i {
  transform: translateX(5px);
}


@media (max-width: 768px) {
  .course-title {
    font-size: 1.15rem;
  }
  
  .course-meta-item {
    font-size: 0.85rem;
    padding: 6px 12px;
  }
}

@media (max-width: 480px) {

  .course-header,
  .course-meta,
  .course-footer {
    padding: 16px;
  }

  .course-title {
    font-size: 1.1rem;
  }

  .course-header {
    gap: 8px;
  }
  
  .course-code {
    font-size: 0.8rem;
    padding: 4px 10px;
  }
}