/* ========================================
   STS2 Search & Filter
======================================== */

.sts2-search-filter {
  background: linear-gradient(
    135deg,
    rgba(30, 30, 40, 0.95),
    rgba(20, 20, 30, 0.95)
  );
  border-bottom: var(--sts2-border-thin) solid var(--sts2-border-hover);
  padding: var(--sts2-gap-lg);
}

.search-box {
  width: 100%;
  padding: 0.55em 0.75em;
  font-size: var(--sts2-font-lg);
  border: var(--sts2-border-thin) solid var(--sts2-border-hover);
  border-radius: var(--sts2-radius-xs);
  background: rgba(0, 0, 0, 0.3);
  color: #fff;
  transition: all 0.2s;
  margin-bottom: var(--sts2-gap-lg);
}

.search-box::placeholder {
  color: var(--sts2-text-muted);
}

.search-box:focus {
  outline: none;
  border-color: rgba(255, 215, 0, 0.6);
  box-shadow: 0 0 0 var(--sts2-border-thick) rgba(255, 215, 0, 0.1);
  background: rgba(0, 0, 0, 0.4);
}

.filter-groups {
  display: grid;
  gap: var(--sts2-gap-md);
  grid-template-columns: repeat(auto-fit, minmax(12em, 1fr));
}

.filter-group {
  display: flex;
  flex-direction: column;
  gap: var(--sts2-gap-sm);
}

.filter-group label {
  font-size: var(--sts2-font-xs);
  font-weight: 700;
  color: var(--sts2-accent-gold);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.filter-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3em;
}

.filter-btn {
  padding: 0.3em 0.65em;
  background: rgba(60, 80, 120, 0.4);
  color: var(--sts2-text-primary);
  border: var(--sts2-border-thin) solid rgba(100, 150, 200, 0.3);
  border-radius: var(--sts2-radius-xs);
  cursor: pointer;
  font-size: var(--sts2-font-sm);
  font-weight: 600;
  transition: all 0.2s;
  box-shadow: 0 var(--sts2-border-thin) var(--sts2-border-thick)
    rgba(0, 0, 0, 0.2);
  line-height: 1.2;
}

.filter-btn:hover {
  background: rgba(80, 100, 140, 0.6);
  border-color: rgba(120, 170, 220, 0.5);
  transform: translateY(-var(--sts2-border-thin));
  color: #fff;
}

.filter-btn.active {
  background: linear-gradient(
    135deg,
    rgba(220, 180, 50, 0.9),
    rgba(180, 140, 30, 0.9)
  );
  border-color: rgba(255, 220, 100, 0.7);
  color: var(--sts2-bg-dark);
  font-weight: 700;
  box-shadow:
    0 var(--sts2-border-base) 0.375em rgba(0, 0, 0, 0.3),
    0 0 0.625em rgba(220, 180, 50, 0.4);
}

.filter-btn.active:hover {
  background: linear-gradient(
    135deg,
    rgba(240, 200, 70, 1),
    rgba(200, 160, 50, 1)
  );
  transform: translateY(-var(--sts2-border-thin)) scale(1.02);
}

.filter-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 0.9em;
  padding-top: 0.75em;
  border-top: var(--sts2-border-thin) solid var(--sts2-border);
}

.btn-clear {
  padding: 0.45em 1.1em;
  background: rgba(220, 53, 69, 0.8);
  color: #fff;
  border: var(--sts2-border-thin) solid rgba(255, 100, 120, 0.4);
  border-radius: var(--sts2-radius-xs);
  font-weight: 700;
  font-size: var(--sts2-font-sm);
  cursor: pointer;
  transition: all 0.2s;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  line-height: 1.2;
}

.btn-clear:hover {
  background: rgba(220, 53, 69, 1);
  border-color: rgba(255, 100, 120, 0.6);
  transform: scale(1.05);
  box-shadow: 0 var(--sts2-border-base) 0.5em rgba(220, 53, 69, 0.4);
}

.result-count {
  font-size: var(--sts2-font-base);
  color: var(--sts2-text-secondary);
  font-weight: 600;
}

.result-count strong {
  color: var(--sts2-accent-gold);
  font-size: 1.1em;
  font-weight: 800;
}

@media (max-width: 64em) {
  .filter-groups {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 48em) {
  .sts2-search-filter {
    padding: 0.75em;
    margin-top: 0.75em;
  }

  #card-search {
    padding: 0.55em;
    font-size: var(--sts2-font-base);
  }

  .filter-groups {
    gap: 0.55em;
  }

  .filter-group label {
    font-size: 0.65em;
  }

  .filter-btn {
    padding: 0.27em 0.55em;
    font-size: var(--sts2-font-xs);
  }

  .filter-actions {
    flex-direction: column;
    gap: var(--sts2-gap-md);
    align-items: stretch;
    margin-top: 0.75em;
    padding-top: 0.65em;
  }

  .btn-clear {
    width: 100%;
    padding: 0.55em;
    font-size: var(--sts2-font-xs);
  }

  .result-count {
    text-align: center;
    font-size: var(--sts2-font-sm);
  }
}

/* 検索結果なしメッセージ */
.no-results {
  grid-column: 1 / -1;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: var(--sts2-gap-xxl, 3rem) var(--sts2-gap-md, 1rem);
  min-height: 300px;
  color: var(--sts2-text-muted);
}

.no-results-icon {
  font-size: 4rem;
  opacity: 0.5;
}

.no-results-text {
  font-size: var(--sts2-font-lg, 1.125rem);
  font-weight: 600;
}