/**
 * Download Center — Telecom Utility Hub (Phase 37 / 6.3.0)
 * Glass cards · purple/cyan neon · instant filter · zero deps
 */

.ar-dl {
  --ar-dl-ink: #16121f;
  --ar-dl-muted: #6a6478;
  --ar-dl-line: rgba(110, 60, 160, 0.12);
  --ar-dl-magenta: #a12273;
  --ar-dl-cyan: #22d3ee;
  --ar-dl-violet: #7c3aed;
  --ar-dl-green: #10b981;
  color: var(--ar-dl-ink);
  background:
    radial-gradient(ellipse 42% 30% at 0% 0%, rgba(34, 211, 238, 0.07), transparent 55%),
    radial-gradient(ellipse 38% 26% at 100% 0%, rgba(161, 34, 115, 0.07), transparent 52%),
    linear-gradient(180deg, #fbfcfe 0%, #f4f1f8 100%);
  padding-bottom: clamp(1.75rem, 4.5vw, 3rem);
}

.ar-dl__hero {
  padding: clamp(1.25rem, 3.2vw, 2rem) 0 0.35rem;
}

.ar-dl__hero-inner {
  max-width: 44rem;
}

.ar-dl__eyebrow {
  margin: 0 0 0.35rem;
  font-size: 0.68rem;
  font-weight: 750;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ar-dl-magenta);
}

.ar-dl__title {
  margin: 0 0 0.35rem;
  font-size: clamp(1.3rem, 2.6vw, 1.85rem);
  font-weight: 800;
  line-height: 1.28;
  letter-spacing: -0.02em;
}

.ar-dl__lead {
  margin: 0 0 0.95rem;
  color: var(--ar-dl-muted);
  font-size: 0.88rem;
  line-height: 1.65;
}

.ar-dl__toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.65rem 0.85rem;
}

.ar-dl-search {
  position: relative;
  display: flex;
  align-items: center;
  flex: 1 1 16rem;
  max-width: 26rem;
  min-width: 0;
}

.ar-dl-search__ico {
  position: absolute;
  inset-inline-start: 0.75rem;
  color: var(--ar-dl-magenta);
  pointer-events: none;
  opacity: 0.85;
}

.ar-dl-search__input {
  width: 100%;
  margin: 0;
  padding: 0.7rem 0.9rem 0.7rem 2.35rem;
  border-radius: 0.9rem;
  border: 1px solid rgba(124, 58, 237, 0.16);
  background: rgba(255, 255, 255, 0.72);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow:
    0 0 0 1px rgba(255, 255, 255, 0.5) inset,
    0 8px 22px rgba(42, 10, 61, 0.04);
  color: var(--ar-dl-ink);
  font-size: 0.88rem;
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

[dir="rtl"] .ar-dl-search__input {
  padding: 0.7rem 2.35rem 0.7rem 0.9rem;
}

.ar-dl-search__input:focus {
  border-color: rgba(34, 211, 238, 0.55);
  box-shadow:
    0 0 0 1px rgba(34, 211, 238, 0.25),
    0 0 18px rgba(34, 211, 238, 0.2),
    0 8px 22px rgba(42, 10, 61, 0.05);
}

.ar-dl__count {
  margin: 0;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--ar-dl-muted);
}

.ar-dl__body {
  padding-top: 1rem;
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}

.ar-dl-group__head {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  margin-bottom: 0.55rem;
}

.ar-dl-group__title {
  margin: 0;
  font-size: 0.82rem;
  font-weight: 800;
}

.ar-dl-group__head::after {
  content: "";
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, rgba(124, 58, 237, 0.18), transparent 80%);
}

.ar-dl-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.7rem;
}

.ar-dl-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  padding: 0.9rem 0.95rem 0.95rem;
  border-radius: 1.05rem;
  border: 1px solid rgba(255, 255, 255, 0.55);
  background:
    linear-gradient(155deg, rgba(255, 255, 255, 0.78), rgba(248, 245, 255, 0.62));
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  box-shadow:
    0 0 0 1px rgba(124, 58, 237, 0.06),
    0 10px 24px rgba(42, 10, 61, 0.04);
  overflow: hidden;
  transition:
    border-color 0.28s ease,
    box-shadow 0.28s ease,
    transform 0.28s cubic-bezier(0.22, 1, 0.36, 1);
}

.ar-dl-card__glow {
  position: absolute;
  inset: auto -20% -40% auto;
  width: 60%;
  height: 55%;
  background:
    radial-gradient(closest-side, rgba(34, 211, 238, 0.14), transparent 70%),
    radial-gradient(closest-side, rgba(161, 34, 115, 0.12), transparent 72%);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.ar-dl-card:hover {
  transform: translateY(-3px);
  border-color: rgba(34, 211, 238, 0.35);
  box-shadow:
    0 0 0 1px rgba(34, 211, 238, 0.18),
    0 0 22px rgba(124, 58, 237, 0.14),
    0 0 28px rgba(34, 211, 238, 0.12),
    0 14px 30px rgba(42, 10, 61, 0.07);
}

.ar-dl-card:hover .ar-dl-card__glow {
  opacity: 1;
}

.ar-dl-card--featured {
  border-color: rgba(161, 34, 115, 0.18);
  background:
    linear-gradient(155deg, rgba(161, 34, 115, 0.07), rgba(255, 255, 255, 0.78));
}

.ar-dl-card--pending {
  opacity: 0.94;
}

.ar-dl-card__top {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.45rem;
}

.ar-dl-card__icon {
  display: grid;
  place-items: center;
  width: 2.2rem;
  height: 2.2rem;
  border-radius: 0.7rem;
  color: #fff;
  background: linear-gradient(145deg, #a12273, #5b21b6);
  box-shadow: 0 6px 14px rgba(124, 58, 237, 0.25);
  transition: background 0.25s ease, box-shadow 0.25s ease;
}

.ar-dl-card:hover .ar-dl-card__icon {
  background: linear-gradient(145deg, #22d3ee, #7c3aed);
  box-shadow: 0 0 18px rgba(34, 211, 238, 0.45);
}

.ar-dl-card__icon svg {
  width: 16px;
  height: 16px;
}

.ar-dl-card__role {
  max-width: 62%;
  padding: 0.2rem 0.45rem;
  border-radius: 999px;
  font-size: 0.6rem;
  font-weight: 750;
  line-height: 1.35;
  text-align: center;
  color: #6b1a8f;
  background: rgba(124, 58, 237, 0.1);
  border: 1px solid rgba(124, 58, 237, 0.16);
}

.ar-dl-card__title {
  position: relative;
  z-index: 1;
  margin: 0;
  font-size: 0.92rem;
  font-weight: 800;
  line-height: 1.3;
}

.ar-dl-card__text {
  position: relative;
  z-index: 1;
  margin: 0;
  flex: 1;
  color: var(--ar-dl-muted);
  font-size: 0.74rem;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.ar-dl-card__meta {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
}

.ar-dl-card__meta span {
  font-size: 0.58rem;
  font-weight: 650;
  color: var(--ar-dl-muted);
  padding: 0.1rem 0.35rem;
  border-radius: 999px;
  background: rgba(42, 10, 61, 0.04);
}

.ar-dl-card__btn {
  position: relative;
  z-index: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  margin-top: 0.2rem;
  padding: 0.52rem 0.75rem;
  border-radius: 0.7rem;
  text-decoration: none;
  font-size: 0.76rem;
  font-weight: 750;
  color: #fff;
  background: linear-gradient(135deg, #a12273, #5b21b6);
  border: 1px solid transparent;
  box-shadow: 0 6px 14px rgba(124, 58, 237, 0.2);
  transition:
    background 0.25s ease,
    box-shadow 0.25s ease,
    transform 0.2s ease,
    border-color 0.25s ease;
}

.ar-dl-card__btn:hover,
.ar-dl-card__btn:focus-visible {
  color: #fff;
  background: linear-gradient(135deg, #34d399, #10b981 40%, #0891b2);
  border-color: rgba(167, 243, 208, 0.55);
  box-shadow:
    0 0 0 1px rgba(16, 185, 129, 0.35),
    0 0 20px rgba(34, 211, 238, 0.4),
    0 0 28px rgba(16, 185, 129, 0.35);
  transform: translateY(-2px);
  outline: none;
}

.ar-dl-card__btn:active {
  transform: translateY(0);
  box-shadow:
    0 0 0 1px rgba(16, 185, 129, 0.5),
    0 0 24px rgba(52, 211, 153, 0.55),
    inset 0 1px 0 rgba(255, 255, 255, 0.25);
}

.ar-dl-card__trust {
  position: relative;
  z-index: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-top: 0.2rem;
  padding: 0.48rem 0.55rem;
  border-radius: 0.7rem;
  font-size: 0.66rem;
  font-weight: 700;
  line-height: 1.4;
  text-align: center;
  color: #6b5b7a;
  background: rgba(124, 58, 237, 0.06);
  border: 1px dashed rgba(124, 58, 237, 0.28);
}

.ar-dl__empty {
  margin: 0;
  padding: 1.15rem;
  text-align: center;
  color: var(--ar-dl-muted);
  font-size: 0.88rem;
  border-radius: 0.9rem;
  border: 1px dashed var(--ar-dl-line);
  background: rgba(255, 255, 255, 0.55);
}

.ar-dl-llm {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

@media (max-width: 1100px) {
  .ar-dl-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 800px) {
  .ar-dl-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 480px) {
  .ar-dl-grid {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  .ar-dl-card,
  .ar-dl-card__btn,
  .ar-dl-card__icon,
  .ar-dl-search__input {
    transition: none;
  }

  .ar-dl-card:hover,
  .ar-dl-card__btn:hover {
    transform: none;
  }
}