/* ============================================
   ESPLORA BREVETTI - CSS
   ============================================ */

/* HERO COMPATTO */
.esplora-hero {
  position: relative;
  padding: 9rem 4rem 4rem;
  overflow: hidden;
  text-align: center;
}

.esplora-hero-bg {
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse 60% 80% at 50% 0%, rgba(123,79,224,0.2) 0%, transparent 65%),
    linear-gradient(180deg, #13123a 0%, #0f0e2a 100%);
}

.esplora-hero-content {
  position: relative; z-index: 2;
  max-width: 700px; margin: 0 auto;
}

.esplora-hero h1 {
  font-family: 'Playfair Display', serif;
  font-size: clamp(2.2rem, 4vw, 3.5rem);
  font-weight: 900; margin-bottom: 1rem;
  animation: fadeUp 0.7s ease both;
}

.esplora-hero h1 em {
  font-style: normal;
  background: linear-gradient(135deg, var(--purple-light), var(--cyan));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}

.esplora-hero p {
  color: rgba(255,255,255,0.55);
  font-size: 1rem; line-height: 1.7;
  margin-bottom: 2rem;
  animation: fadeUp 0.7s 0.1s ease both;
}

/* SEARCH */
.esplora-search-form { animation: fadeUp 0.7s 0.2s ease both; }

.esplora-search-wrap {
  display: flex; align-items: center;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(157,111,240,0.3);
  border-radius: 12px;
  padding: 0.4rem 0.4rem 0.4rem 1.2rem;
  gap: 0.75rem;
  transition: border-color 0.2s;
}

.esplora-search-wrap:focus-within {
  border-color: var(--purple-light);
  background: rgba(123,79,224,0.08);
}

.search-icon { font-size: 1rem; flex-shrink: 0; }

.esplora-search-input {
  flex: 1; background: transparent; border: none; outline: none;
  color: var(--white); font-size: 0.95rem; font-family: 'DM Sans', sans-serif;
  padding: 0.5rem 0;
}

.esplora-search-input::placeholder { color: rgba(255,255,255,0.35); }

.esplora-search-btn {
  background: linear-gradient(135deg, var(--purple), var(--purple-light));
  color: #fff; border: none; border-radius: 8px;
  padding: 0.6rem 1.4rem; font-size: 0.9rem; font-weight: 600;
  cursor: pointer; font-family: 'DM Sans', sans-serif;
  transition: opacity 0.2s;
  white-space: nowrap;
}

.esplora-search-btn:hover { opacity: 0.85; }

/* FILTRI */
.esplora-filtri {
  background: rgba(19,18,58,0.8);
  border-bottom: 1px solid rgba(123,79,224,0.12);
  border-top: 1px solid rgba(123,79,224,0.12);
  padding: 1rem 4rem;
  position: sticky; top: 88px; z-index: 50;
  backdrop-filter: blur(12px);
}

.esplora-filtri-inner {
  display: flex; align-items: center; gap: 1rem;
  flex-wrap: wrap; max-width: 1200px; margin: 0 auto;
}

.filtri-label {
  font-size: 0.78rem; text-transform: uppercase;
  letter-spacing: 0.1em; color: var(--gray);
  white-space: nowrap;
}

.filtri-tags { display: flex; gap: 0.5rem; flex-wrap: wrap; }

.filtro-tag {
  display: inline-flex; align-items: center; gap: 0.4rem;
  padding: 0.35rem 0.9rem; border-radius: 100px;
  border: 1px solid rgba(157,111,240,0.2);
  color: rgba(255,255,255,0.6);
  font-size: 0.82rem; text-decoration: none;
  transition: all 0.2s;
}

.filtro-tag:hover {
  border-color: var(--purple-light);
  color: var(--white);
}

.filtro-tag.active {
  background: linear-gradient(135deg, var(--purple), var(--purple-light));
  border-color: transparent; color: #fff;
}

.filtro-count {
  background: rgba(255,255,255,0.15);
  border-radius: 100px; padding: 0 0.4rem;
  font-size: 0.7rem;
}

/* CONTAINER PRINCIPALE */
.esplora-container {
  max-width: 1200px; margin: 0 auto;
  padding: 3rem 4rem 5rem;
}

/* INFO RISULTATI */
.esplora-risultati-info {
  display: flex; align-items: center; gap: 0.75rem;
  margin-bottom: 2rem;
  font-size: 0.88rem; color: var(--gray);
}

.ricerca-tag {
  background: rgba(123,79,224,0.15);
  border: 1px solid rgba(157,111,240,0.25);
  color: var(--purple-pale);
  padding: 0.2rem 0.7rem; border-radius: 100px;
}

.clear-search {
  color: var(--purple-pale); text-decoration: none;
  margin-left: 0.3rem; font-weight: 700;
}

/* GRIGLIA CARD */
.brevetti-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.5rem;
}

/* CARD BREVETTO */
.brevetto-card {
  background: var(--card-bg);
  border: 1px solid rgba(123,79,224,0.15);
  border-radius: 16px;
  overflow: hidden;
  transition: transform 0.3s, border-color 0.3s, box-shadow 0.3s;
  display: flex; flex-direction: column;
}

.brevetto-card:hover {
  transform: translateY(-5px);
  border-color: rgba(157,111,240,0.4);
  box-shadow: 0 12px 40px rgba(123,79,224,0.2);
}

/* IMMAGINE CARD */
.card-image {
  position: relative;
  height: 200px; overflow: hidden;
  background: linear-gradient(135deg, #1a1845, #0f0e2a);
}

.card-image img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.4s;
}

.brevetto-card:hover .card-image img {
  transform: scale(1.05);
}

.card-image-placeholder {
  width: 100%; height: 100%;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, rgba(123,79,224,0.1), rgba(106,212,224,0.05));
}

.placeholder-icon { font-size: 3rem; opacity: 0.4; }

/* BADGE CATEGORIA */
.card-categoria-badge {
  position: absolute; top: 0.75rem; left: 0.75rem;
  background: rgba(15,14,42,0.85);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(157,111,240,0.3);
  color: var(--purple-pale);
  padding: 0.25rem 0.75rem; border-radius: 100px;
  font-size: 0.72rem; font-weight: 500;
  letter-spacing: 0.05em;
}

/* BODY CARD */
.card-body {
  padding: 1.5rem;
  display: flex; flex-direction: column;
  flex: 1; gap: 0.6rem;
}

.card-numero {
  font-size: 0.72rem; letter-spacing: 0.08em;
  color: var(--purple-vivid); font-weight: 500;
  font-family: 'DM Sans', monospace;
}

.card-titolo {
  font-family: 'Playfair Display', serif;
  font-size: 1.15rem; font-weight: 700;
  line-height: 1.3; color: var(--white);
  margin: 0;
}

.card-desc {
  font-size: 0.85rem; color: rgba(255,255,255,0.55);
  line-height: 1.6; flex: 1;
  margin: 0;
}

/* INVENTORE */
.card-inventore {
  display: flex; align-items: center; gap: 0.6rem;
  padding: 0.6rem 0;
  border-top: 1px solid rgba(123,79,224,0.1);
  border-bottom: 1px solid rgba(123,79,224,0.1);
}

.inventore-avatar {
  width: 32px; height: 32px; border-radius: 50%;
  background: linear-gradient(135deg, var(--purple), var(--purple-light));
  display: flex; align-items: center; justify-content: center;
  font-size: 0.72rem; font-weight: 700; color: #fff;
  flex-shrink: 0;
}

.card-inventore span {
  font-size: 0.85rem; color: rgba(255,255,255,0.7);
}

/* AZIONI CARD */
.card-actions {
  display: flex; gap: 0.6rem; margin-top: 0.4rem;
}

.card-btn-primary {
  flex: 1; text-align: center;
  background: linear-gradient(135deg, var(--purple), var(--purple-light));
  color: #fff; padding: 0.55rem 1rem; border-radius: 6px;
  font-size: 0.85rem; font-weight: 600; text-decoration: none;
  transition: opacity 0.2s;
}

.card-btn-primary:hover { opacity: 0.85; }

.card-btn-secondary {
  text-align: center;
  background: transparent;
  color: var(--purple-pale);
  padding: 0.55rem 0.9rem; border-radius: 6px;
  font-size: 0.82rem; font-weight: 500; text-decoration: none;
  border: 1px solid rgba(157,111,240,0.25);
  transition: all 0.2s; white-space: nowrap;
}

.card-btn-secondary:hover {
  border-color: var(--purple-light);
  color: var(--white);
}

/* PAGINAZIONE */
.esplora-pagination {
  display: flex; justify-content: center;
  gap: 0.5rem; margin-top: 3rem; flex-wrap: wrap;
}

.esplora-pagination .page-numbers {
  display: inline-flex; align-items: center; justify-content: center;
  width: 40px; height: 40px; border-radius: 8px;
  border: 1px solid rgba(157,111,240,0.2);
  color: rgba(255,255,255,0.6); text-decoration: none;
  font-size: 0.9rem; transition: all 0.2s;
}

.esplora-pagination .page-numbers:hover,
.esplora-pagination .page-numbers.current {
  background: linear-gradient(135deg, var(--purple), var(--purple-light));
  border-color: transparent; color: #fff;
}

.esplora-pagination .prev,
.esplora-pagination .next {
  width: auto; padding: 0 1rem; font-size: 0.85rem;
}

/* STATO VUOTO */
.esplora-empty {
  text-align: center; padding: 5rem 2rem;
}

.empty-icon { font-size: 3.5rem; margin-bottom: 1rem; }

.esplora-empty h3 {
  font-family: 'Playfair Display', serif;
  font-size: 1.5rem; margin-bottom: 0.75rem;
}

.esplora-empty p {
  color: rgba(255,255,255,0.5); font-size: 0.95rem;
}

.reset-link {
  color: var(--purple-vivid); text-decoration: none;
  font-weight: 500; margin-left: 0.25rem;
}

.reset-link:hover { text-decoration: underline; }

/* CTA IN FONDO */
.esplora-cta {
  background: linear-gradient(135deg, rgba(123,79,224,0.12), rgba(106,212,224,0.05));
  border-top: 1px solid rgba(123,79,224,0.15);
  padding: 3rem 4rem;
}

.esplora-cta-inner {
  max-width: 1200px; margin: 0 auto;
  display: flex; align-items: center;
  justify-content: space-between; gap: 2rem;
  flex-wrap: wrap;
}

.esplora-cta h3 {
  font-family: 'Playfair Display', serif;
  font-size: 1.4rem; margin-bottom: 0.4rem;
}

.esplora-cta p {
  color: rgba(255,255,255,0.55); font-size: 0.95rem; margin: 0;
}

/* RESPONSIVE */
@media (max-width: 900px) {
  .esplora-hero { padding: 7rem 1.5rem 3rem; }
  .esplora-filtri { padding: 1rem 1.5rem; top: 80px; }
  .esplora-container { padding: 2rem 1.5rem 4rem; }
  .brevetti-grid { grid-template-columns: 1fr; }
  .esplora-cta { padding: 2.5rem 1.5rem; }
  .esplora-cta-inner { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 500px) {
  .brevetti-grid { grid-template-columns: 1fr; }
}