/* =====================================================================
   فهرس الدورات — بحث + تصنيفات + ترتيب + شبكة لوحات
   الكرت نفسه من assets/css/courses.css. الكلاسات بتبلش بـ cg-
   (البيانات والفلترة: assets/js/catalog.js)
   ===================================================================== */

.cg {
  padding-block: clamp(4rem, 8vw, 6rem) clamp(5rem, 9vw, 8rem);
}

/* ---------- الرأس ---------- */
.cg-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1rem 2rem;
  margin-bottom: 2.25rem;
}
.cg-head .ds-head { margin: 0; }
.cg-head .ds-title { margin-top: 1rem; font-size: clamp(1.9rem, 1.2rem + 2vw, 2.8rem); }
.cg-head .ds-lead { margin-top: 0.6rem; font-size: 1.02rem; }
.cg-kbd {
  display: none;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--dh-muted);
}
.cg-kbd kbd {
  display: inline-grid;
  place-items: center;
  min-width: 1.6rem;
  height: 1.6rem;
  border: 1px solid var(--dh-line-2);
  border-bottom-width: 2px;
  font-family: var(--dh-mono);
  font-size: 0.8rem;
  color: var(--dh-teal);
  background: var(--dh-paper);
}
@media (hover: hover) and (pointer: fine) and (min-width: 768px) { .cg-kbd { display: inline-flex; } }

/* ---------- شريط الأدوات: خانات متل جدول اللوحة ---------- */
.cg-bar {
  display: grid;
  gap: 0.75rem;
}
@media (min-width: 768px) {
  .cg-bar { grid-template-columns: minmax(0, 1fr) minmax(13rem, auto); }
}
.cg-field {
  position: relative;
  display: flex;
  align-items: stretch;
  height: 3.5rem;
  border: 1px solid var(--dh-line-2);
  background: var(--dh-paper);
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}
.cg-field:focus-within {
  border-color: var(--dh-teal);
  box-shadow: inset 0 -2px 0 var(--dh-gold), 0 14px 30px -22px rgba(20, 57, 57, 0.6);
}
.cg-field__lbl {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding-inline: 1rem;
  border-inline-end: 1px solid var(--dh-line-2);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--dh-muted);
  white-space: nowrap;
}
.cg-field__lbl svg { width: 1.1rem; height: 1.1rem; color: var(--dh-teal); }
.cg-field input,
.cg-field select {
  flex: 1;
  min-width: 0;
  padding-inline: 1rem;
  border: 0;
  background: transparent;
  font: inherit;
  font-size: 1rem;
  font-weight: 600;
  color: var(--dh-text);
  outline: none;
}
.cg-field input::placeholder { color: rgba(90, 107, 107, 0.7); font-weight: 500; }
.cg-field input::-webkit-search-cancel-button { display: none; }
.cg-search__clear {
  display: grid;
  place-items: center;
  width: 3rem;
  color: var(--dh-muted);
  transition: color 0.3s ease;
}
.cg-search__clear:hover { color: var(--dh-teal); }
.cg-search__clear:focus-visible { outline: 2px solid var(--dh-gold); outline-offset: -4px; }
.cg-search__clear svg { width: 1.1rem; height: 1.1rem; }
.cg-search__clear[hidden] { display: none; }

.cg-sort select {
  appearance: none;
  -webkit-appearance: none;
  padding-inline: 1rem 2.6rem;
  cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23143939' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: left 0.9rem center;
  background-size: 1.1rem;
}

/* ---------- التصنيفات ---------- */
.cg-chips {
  display: flex;
  gap: 0.5rem;
  margin-top: 1rem;
  padding: 2px;
  overflow-x: auto;
  scrollbar-width: none;
  overscroll-behavior-x: contain;
}
.cg-chips::-webkit-scrollbar { display: none; }
@media (max-width: 767px) {
  .cg-chips {
    margin-inline: -1rem;
    padding-inline: 1rem;
    -webkit-mask-image: linear-gradient(to left, transparent, #000 1rem, #000 calc(100% - 1.5rem), transparent);
    mask-image: linear-gradient(to left, transparent, #000 1rem, #000 calc(100% - 1.5rem), transparent);
  }
}
@media (min-width: 768px) { .cg-chips { flex-wrap: wrap; } }

.cg-chip {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  flex-shrink: 0;
  height: 2.65rem;
  padding-inline: 0.9rem;
  border: 1px solid var(--dh-line-2);
  background: var(--dh-paper);
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--dh-teal);
  white-space: nowrap;
  transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}
.cg-chip__no {
  font-family: var(--dh-mono);
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--dh-gold-600);
}
.cg-chip__n {
  min-width: 1.5rem;
  padding: 0.12rem 0.35rem;
  border: 1px solid var(--dh-line-2);
  font-family: var(--dh-mono);
  font-size: 0.72rem;
  font-weight: 500;
  line-height: 1.3;
  text-align: center;
  color: var(--dh-muted);
  transition: inherit;
}
.cg-chip:hover { border-color: var(--dh-teal); }
.cg-chip:focus-visible { outline: 2px solid var(--dh-gold); outline-offset: 2px; }
.cg-chip[aria-pressed="true"] { background: var(--dh-teal); border-color: var(--dh-teal); color: #fff; }
.cg-chip[aria-pressed="true"] .cg-chip__no { color: var(--dh-gold-light); }
.cg-chip[aria-pressed="true"] .cg-chip__n { color: var(--dh-teal-100); border-color: rgba(217, 235, 235, 0.3); }

/* ---------- عدد النتائج: خط قياس ---------- */
.cg-status {
  display: flex;
  align-items: center;
  gap: 1rem;
  min-height: 1.5rem;
  margin-top: 2rem;
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--dh-teal);
}
.cg-status::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--dh-line-2);
}
.cg-status:empty::after { display: none; }

/* ---------- الشبكة ---------- */
.cg-grid {
  margin-top: 3rem;
  transition: opacity 0.22s ease, transform 0.22s ease;
}
.cg-grid.is-out { opacity: 0; transform: translateY(8px); }
.cg-grid .cs-title { unicode-bidi: plaintext; text-align: right; }

/* هيكل وقت التحميل */
.cg-skel {
  position: relative;
  padding: 0.5rem;
  border: 1px solid var(--dh-line);
  background: var(--dh-paper);
}
.cg-skel > div {
  border: 1px solid var(--dh-line-2);
}
.cg-skel__thumb {
  aspect-ratio: 16 / 10;
  background-color: var(--dh-teal-50);
  background-image:
    linear-gradient(rgba(20, 57, 57, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(20, 57, 57, 0.07) 1px, transparent 1px);
  background-size: 16px 16px;
  border-bottom: 1px solid var(--dh-line-2);
}
.cg-skel__line {
  height: 0.8rem;
  margin: 1.1rem 1.2rem 0;
  background: linear-gradient(90deg, var(--dh-teal-50) 0 30%, #e3eeee 50%, var(--dh-teal-50) 70%) 0 0 / 300% 100%;
  animation: cg-shimmer 1.6s linear infinite;
}
.cg-skel__line:nth-child(2) { width: 60%; height: 1.1rem; }
.cg-skel__line:nth-child(3) { width: 82%; }
.cg-skel__line:nth-child(4) { width: 70%; margin-bottom: 1.4rem; }
.cg-skel__foot { height: 3.25rem; background: var(--dh-teal); opacity: 0.12; }

/* المزيد */
.cg-more {
  margin-top: clamp(3rem, 6vw, 4.5rem);
  text-align: center;
}
.cg-more b { font-family: var(--dh-mono); font-weight: 500; font-size: 0.85rem; }
.cg-more .ds-btn svg { transform: rotate(-90deg); }
.cg-more .ds-btn:hover svg { transform: rotate(-90deg) translateX(-4px); }

/* ما في نتائج / خطأ: لوحة فاضية */
.cg-empty,
.cg-error {
  margin-top: 3rem;
  display: grid;
  justify-items: center;
  gap: 0.75rem;
  padding: clamp(2.5rem, 6vw, 4rem) 1.5rem;
  border: 1px dashed var(--dh-line-2);
  background: rgba(241, 247, 247, 0.6);
  text-align: center;
}
.cg-empty[hidden],
.cg-error[hidden],
.cg-more[hidden] { display: none; }
.cg-empty svg,
.cg-error svg { width: 7.5rem; height: auto; color: var(--dh-teal); }
.cg-empty h3,
.cg-error h3 { font-size: 1.25rem; font-weight: 800; color: var(--dh-teal); }
.cg-empty p,
.cg-error p { max-width: 26rem; font-size: 0.95rem; line-height: 1.8; color: var(--dh-muted); }
.cg-empty .ds-btn,
.cg-error .ds-btn { margin-top: 0.5rem; }

@keyframes cg-shimmer {
  from { background-position: 100% 0; }
  to { background-position: -50% 0; }
}

@media (prefers-reduced-motion: reduce) {
  .cg-grid, .cg-field, .cg-chip { transition: none; }
  .cg-skel__line { animation: none; }
}