.nasa-filter-bar {
  background: var(--bg-secondary);
  border: 1px solid var(--stroke);
  border-radius: var(--radius);
  padding: 0;
  margin: 32px 0;
  box-shadow: var(--shadow);
  overflow: hidden;
}

.nasa-filter-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  background: var(--bg-tertiary);
  border-bottom: 1px solid var(--stroke);
  cursor: pointer;
  user-select: none;
  transition: background 0.2s ease;
}

.nasa-filter-header:hover {
  background: var(--button-bg-hover);
}

.nasa-filter-header-content {
  display: flex;
  align-items: center;
  gap: 12px;
}

.nasa-filter-header h3 {
  margin: 0;
  font-size: 1.1em;
  font-weight: 600;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 8px;
}

.nasa-filter-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 6px;
  background: var(--button-bg);
  border: 1px solid var(--input-border);
  color: var(--accent-purple);
  transition: all 0.3s ease;
}

.nasa-filter-toggle svg {
  transition: transform 0.3s ease;
}

.nasa-filter-bar.collapsed .nasa-filter-toggle svg {
  transform: rotate(-90deg);
}

.nasa-filter-content {
  max-height: 2000px;
  overflow: hidden;
  transition: max-height 0.4s ease, opacity 0.3s ease;
  opacity: 1;
}

.nasa-filter-bar.collapsed .nasa-filter-content {
  max-height: 0;
  opacity: 0;
}

.nasa-filter-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
  padding: 24px;
}

.nasa-filter-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
}

.nasa-filter-field {
  display: flex;
  flex-direction: column;
}

.nasa-filter-field label {
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.filter-input,
.filter-select {
  width: 100%;
  padding: 10px 14px;
  background: var(--input-bg);
  border: 1px solid var(--input-border);
  border-radius: 6px;
  color: var(--text);
  font-size: 14px;
  transition: all 0.3s ease;
}

.filter-input:focus,
.filter-select:focus {
  outline: none;
  border-color: var(--accent-purple);
  box-shadow: 0 0 0 3px var(--button-bg);
}

.filter-input::placeholder {
  color: var(--muted);
}

.nasa-filter-actions {
  display: flex;
  gap: 12px;
  align-items: center;
  flex-wrap: wrap;
}

.nasa-filter-btn {
  padding: 10px 20px;
  border-radius: 6px;
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
  transition: all 0.3s ease;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  border: none;
}

.nasa-filter-btn svg {
  margin-right: 6px;
}

.nasa-filter-btn-primary {
  background: linear-gradient(135deg, var(--accent-purple) 0%, var(--accent-purple-dark) 100%);
  color: white;
  box-shadow: 0 4px 12px var(--text-shadow);
}

.nasa-filter-btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 16px var(--text-shadow);
}

.nasa-filter-btn-secondary {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--input-border);
}

.nasa-filter-btn-secondary:hover {
  border-color: var(--accent-purple);
  color: var(--text);
  background: var(--button-bg-hover);
  transform: translateY(-1px);
}

.nasa-active-filters {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nasa-filter-badge {
  display: inline-flex;
  align-items: center;
  padding: 6px 14px;
  background: var(--button-bg);
  color: var(--accent-purple-light);
  border-radius: 16px;
  font-size: 12px;
  font-weight: 600;
  border: 1px solid var(--accent-purple);
}

.nasa-filter-badge svg {
  margin-right: 4px;
}

/* ===== FILTER BAR RESPONSIVE ===== */

/* Tablet portrait (768px) */
@media (max-width: 768px) {
  .nasa-filter-header {
    padding: 12px 16px;
  }

  .nasa-filter-header h3 {
    font-size: 1em;
  }

  .nasa-filter-form {
    padding: 16px;
  }

  .nasa-filter-grid {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }

  .nasa-filter-field label {
    font-size: 12px;
    margin-bottom: 6px;
  }

  .filter-input,
  .filter-select {
    padding: 8px 12px;
    font-size: 13px;
  }

  .nasa-filter-actions {
    gap: 10px;
  }

  .nasa-filter-btn {
    padding: 8px 16px;
    font-size: 13px;
  }

  .nasa-filter-badge {
    font-size: 11px;
    padding: 5px 12px;
  }
}

/* Mobile landscape (640px) */
@media (max-width: 640px) {
  .nasa-filter-header {
    padding: 10px 14px;
  }

  .nasa-filter-header h3 {
    font-size: 0.95em;
  }

  .nasa-filter-toggle {
    width: 28px;
    height: 28px;
  }

  .nasa-filter-form {
    padding: 14px;
  }

  .nasa-filter-grid {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .nasa-filter-field label {
    font-size: 11px;
    margin-bottom: 5px;
  }

  .filter-input,
  .filter-select {
    padding: 7px 10px;
    font-size: 12px;
  }

  .nasa-filter-actions {
    flex-direction: column;
    width: 100%;
    gap: 8px;
  }

  .nasa-filter-btn {
    width: 100%;
    justify-content: center;
    padding: 9px 16px;
    font-size: 12px;
  }

  .nasa-filter-btn svg {
    margin-right: 5px;
  }

  .nasa-filter-badge {
    font-size: 10px;
    padding: 4px 10px;
  }

  .nasa-filter-badge svg {
    margin-right: 3px;
  }
}

/* Mobile portrait (480px) */
@media (max-width: 480px) {
  .nasa-filter-header {
    padding: 8px 12px;
  }

  .nasa-filter-header h3 {
    font-size: 0.9em;
  }

  .nasa-filter-form {
    padding: 12px;
  }

  .nasa-filter-grid {
    gap: 8px;
  }

  .nasa-filter-field label {
    font-size: 10px;
    margin-bottom: 4px;
  }

  .filter-input,
  .filter-select {
    padding: 6px 8px;
    font-size: 11px;
  }

  .nasa-filter-btn {
    padding: 8px 14px;
    font-size: 11px;
  }
}